/* * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder * Copyright (c) 2003 Michael Niedermayer * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * */ /** * @file h264.c * H.264 / AVC / MPEG4 part10 codec. * @author Michael Niedermayer */ #include "common.h" #include "dsputil.h" #include "avcodec.h" #include "mpegvideo.h" #include "h264data.h" #include "golomb.h" #include "cabac.h" #undef NDEBUG #include #define interlaced_dct interlaced_dct_is_a_bad_name #define mb_intra mb_intra_isnt_initalized_see_mb_type #define LUMA_DC_BLOCK_INDEX 25 #define CHROMA_DC_BLOCK_INDEX 26 #define CHROMA_DC_COEFF_TOKEN_VLC_BITS 8 #define COEFF_TOKEN_VLC_BITS 8 #define TOTAL_ZEROS_VLC_BITS 9 #define CHROMA_DC_TOTAL_ZEROS_VLC_BITS 3 #define RUN_VLC_BITS 3 #define RUN7_VLC_BITS 6 #define MAX_SPS_COUNT 32 #define MAX_PPS_COUNT 256 #define MAX_MMCO_COUNT 66 /** * Sequence parameter set */ typedef struct SPS{ int profile_idc; int level_idc; int log2_max_frame_num; ///< log2_max_frame_num_minus4 + 4 int poc_type; ///< pic_order_cnt_type int log2_max_poc_lsb; ///< log2_max_pic_order_cnt_lsb_minus4 int delta_pic_order_always_zero_flag; int offset_for_non_ref_pic; int offset_for_top_to_bottom_field; int poc_cycle_length; ///< num_ref_frames_in_pic_order_cnt_cycle int ref_frame_count; ///< num_ref_frames int gaps_in_frame_num_allowed_flag; int mb_width; ///< frame_width_in_mbs_minus1 + 1 int mb_height; ///< frame_height_in_mbs_minus1 + 1 int frame_mbs_only_flag; int mb_aff; ///b4_stride int b8_stride; int halfpel_flag; int thirdpel_flag; int unknown_svq3_flag; int next_slice_index; SPS sps_buffer[MAX_SPS_COUNT]; SPS sps; ///< current sps PPS pps_buffer[MAX_PPS_COUNT]; /** * current pps */ PPS pps; //FIXME move tp Picture perhaps? (->no) do we need that? int slice_num; uint8_t *slice_table_base; uint8_t *slice_table; ///< slice_table_base + mb_stride + 1 int slice_type; int slice_type_fixed; //interlacing specific flags int mb_field_decoding_flag; int sub_mb_type[4]; //POC stuff int poc_lsb; int poc_msb; int delta_poc_bottom; int delta_poc[2]; int frame_num; int prev_poc_msb; ///< poc_msb of the last reference pic for POC type 0 int prev_poc_lsb; ///< poc_lsb of the last reference pic for POC type 0 int frame_num_offset; ///< for POC type 2 int prev_frame_num_offset; ///< for POC type 2 int prev_frame_num; ///< frame_num of the last pic for POC type 1/2 /** * frame_num for frames or 2*frame_num for field pics. */ int curr_pic_num; /** * max_frame_num or 2*max_frame_num for field pics. */ int max_pic_num; //Weighted pred stuff int use_weight; int use_weight_chroma; int luma_log2_weight_denom; int chroma_log2_weight_denom; int luma_weight[2][16]; int luma_offset[2][16]; int chroma_weight[2][16][2]; int chroma_offset[2][16][2]; int implicit_weight[16][16]; //deblock int deblocking_filter; ///< disable_deblocking_filter_idc with 1<->0 int slice_alpha_c0_offset; int slice_beta_offset; int redundant_pic_count; int direct_spatial_mv_pred; int dist_scale_factor[16]; /** * num_ref_idx_l0/1_active_minus1 + 1 */ int ref_count[2];// FIXME split for AFF Picture *short_ref[16]; Picture *long_ref[16]; Picture default_ref_list[2][32]; Picture ref_list[2][32]; //FIXME size? Picture field_ref_list[2][32]; //FIXME size? Picture *delayed_pic[16]; //FIXME size? /** * memory management control operations buffer. */ MMCO mmco[MAX_MMCO_COUNT]; int mmco_index; int long_ref_count; ///< number of actual long term references int short_ref_count; ///< number of actual short term references //data partitioning GetBitContext intra_gb; GetBitContext inter_gb; GetBitContext *intra_gb_ptr; GetBitContext *inter_gb_ptr; DCTELEM mb[16*24] __align8; /** * Cabac */ CABACContext cabac; uint8_t cabac_state[399]; int cabac_init_idc; /* 0x100 -> non null luma_dc, 0x80/0x40 -> non null chroma_dc (cb/cr), 0x?0 -> chroma_cbp(0,1,2), 0x0? luma_cbp */ uint16_t *cbp_table; int top_cbp; int left_cbp; /* chroma_pred_mode for i4x4 or i16x16, else 0 */ uint8_t *chroma_pred_mode_table; int last_qscale_diff; int16_t (*mvd_table[2])[2]; int16_t mvd_cache[2][5*8][2]; uint8_t *direct_table; uint8_t direct_cache[5*8]; }H264Context; static VLC coeff_token_vlc[4]; static VLC chroma_dc_coeff_token_vlc; static VLC total_zeros_vlc[15]; static VLC chroma_dc_total_zeros_vlc[3]; static VLC run_vlc[6]; static VLC run7_vlc; static void svq3_luma_dc_dequant_idct_c(DCTELEM *block, int qp); static void svq3_add_idct_c(uint8_t *dst, DCTELEM *block, int stride, int qp, int dc); static void filter_mb( H264Context *h, int mb_x, int mb_y, uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr); static inline uint32_t pack16to32(int a, int b){ #ifdef WORDS_BIGENDIAN return (b&0xFFFF) + (a<<16); #else return (a&0xFFFF) + (b<<16); #endif } /** * fill a rectangle. * @param h height of the rectangle, should be a constant * @param w width of the rectangle, should be a constant * @param size the size of val (1 or 4), should be a constant */ static inline void fill_rectangle(void *vp, int w, int h, int stride, uint32_t val, int size){ //FIXME ensure this IS inlined uint8_t *p= (uint8_t*)vp; assert(size==1 || size==4); w *= size; stride *= size; //FIXME check what gcc generates for 64 bit on x86 and possible write a 32 bit ver of it if(w==2 && h==2){ *(uint16_t*)(p + 0)= *(uint16_t*)(p + stride)= size==4 ? val : val*0x0101; }else if(w==2 && h==4){ *(uint16_t*)(p + 0*stride)= *(uint16_t*)(p + 1*stride)= *(uint16_t*)(p + 2*stride)= *(uint16_t*)(p + 3*stride)= size==4 ? val : val*0x0101; }else if(w==4 && h==1){ *(uint32_t*)(p + 0*stride)= size==4 ? val : val*0x01010101; }else if(w==4 && h==2){ *(uint32_t*)(p + 0*stride)= *(uint32_t*)(p + 1*stride)= size==4 ? val : val*0x01010101; }else if(w==4 && h==4){ *(uint32_t*)(p + 0*stride)= *(uint32_t*)(p + 1*stride)= *(uint32_t*)(p + 2*stride)= *(uint32_t*)(p + 3*stride)= size==4 ? val : val*0x01010101; }else if(w==8 && h==1){ *(uint32_t*)(p + 0)= *(uint32_t*)(p + 4)= size==4 ? val : val*0x01010101; }else if(w==8 && h==2){ *(uint32_t*)(p + 0 + 0*stride)= *(uint32_t*)(p + 4 + 0*stride)= *(uint32_t*)(p + 0 + 1*stride)= *(uint32_t*)(p + 4 + 1*stride)= size==4 ? val : val*0x01010101; }else if(w==8 && h==4){ *(uint64_t*)(p + 0*stride)= *(uint64_t*)(p + 1*stride)= *(uint64_t*)(p + 2*stride)= *(uint64_t*)(p + 3*stride)= size==4 ? val*0x0100000001ULL : val*0x0101010101010101ULL; }else if(w==16 && h==2){ *(uint64_t*)(p + 0+0*stride)= *(uint64_t*)(p + 8+0*stride)= *(uint64_t*)(p + 0+1*stride)= *(uint64_t*)(p + 8+1*stride)= size==4 ? val*0x0100000001ULL : val*0x0101010101010101ULL; }else if(w==16 && h==4){ *(uint64_t*)(p + 0+0*stride)= *(uint64_t*)(p + 8+0*stride)= *(uint64_t*)(p + 0+1*stride)= *(uint64_t*)(p + 8+1*stride)= *(uint64_t*)(p + 0+2*stride)= *(uint64_t*)(p + 8+2*stride)= *(uint64_t*)(p + 0+3*stride)= *(uint64_t*)(p + 8+3*stride)= size==4 ? val*0x0100000001ULL : val*0x0101010101010101ULL; }else assert(0); } static inline void fill_caches(H264Context *h, int mb_type, int for_deblock){ MpegEncContext * const s = &h->s; const int mb_xy= s->mb_x + s->mb_y*s->mb_stride; int topleft_xy, top_xy, topright_xy, left_xy[2]; int topleft_type, top_type, topright_type, left_type[2]; int left_block[4]; int i; //wow what a mess, why didnt they simplify the interlacing&intra stuff, i cant imagine that these complex rules are worth it if(h->sps.mb_aff){ //FIXME topleft_xy = 0; /* avoid warning */ top_xy = 0; /* avoid warning */ topright_xy = 0; /* avoid warning */ }else{ topleft_xy = mb_xy-1 - s->mb_stride; top_xy = mb_xy - s->mb_stride; topright_xy= mb_xy+1 - s->mb_stride; left_xy[0] = mb_xy-1; left_xy[1] = mb_xy-1; left_block[0]= 0; left_block[1]= 1; left_block[2]= 2; left_block[3]= 3; } if(for_deblock){ topleft_type = h->slice_table[topleft_xy ] < 255 ? s->current_picture.mb_type[topleft_xy] : 0; top_type = h->slice_table[top_xy ] < 255 ? s->current_picture.mb_type[top_xy] : 0; topright_type= h->slice_table[topright_xy] < 255 ? s->current_picture.mb_type[topright_xy]: 0; left_type[0] = h->slice_table[left_xy[0] ] < 255 ? s->current_picture.mb_type[left_xy[0]] : 0; left_type[1] = h->slice_table[left_xy[1] ] < 255 ? s->current_picture.mb_type[left_xy[1]] : 0; }else{ topleft_type = h->slice_table[topleft_xy ] == h->slice_num ? s->current_picture.mb_type[topleft_xy] : 0; top_type = h->slice_table[top_xy ] == h->slice_num ? s->current_picture.mb_type[top_xy] : 0; topright_type= h->slice_table[topright_xy] == h->slice_num ? s->current_picture.mb_type[topright_xy]: 0; left_type[0] = h->slice_table[left_xy[0] ] == h->slice_num ? s->current_picture.mb_type[left_xy[0]] : 0; left_type[1] = h->slice_table[left_xy[1] ] == h->slice_num ? s->current_picture.mb_type[left_xy[1]] : 0; } if(IS_INTRA(mb_type)){ h->topleft_samples_available= h->top_samples_available= h->left_samples_available= 0xFFFF; h->topright_samples_available= 0xEEEA; if(!IS_INTRA(top_type) && (top_type==0 || h->pps.constrained_intra_pred)){ h->topleft_samples_available= 0xB3FF; h->top_samples_available= 0x33FF; h->topright_samples_available= 0x26EA; } for(i=0; i<2; i++){ if(!IS_INTRA(left_type[i]) && (left_type[i]==0 || h->pps.constrained_intra_pred)){ h->topleft_samples_available&= 0xDF5F; h->left_samples_available&= 0x5F5F; } } if(!IS_INTRA(topleft_type) && (topleft_type==0 || h->pps.constrained_intra_pred)) h->topleft_samples_available&= 0x7FFF; if(!IS_INTRA(topright_type) && (topright_type==0 || h->pps.constrained_intra_pred)) h->topright_samples_available&= 0xFBFF; if(IS_INTRA4x4(mb_type)){ if(IS_INTRA4x4(top_type)){ h->intra4x4_pred_mode_cache[4+8*0]= h->intra4x4_pred_mode[top_xy][4]; h->intra4x4_pred_mode_cache[5+8*0]= h->intra4x4_pred_mode[top_xy][5]; h->intra4x4_pred_mode_cache[6+8*0]= h->intra4x4_pred_mode[top_xy][6]; h->intra4x4_pred_mode_cache[7+8*0]= h->intra4x4_pred_mode[top_xy][3]; }else{ int pred; if(IS_INTRA16x16(top_type) || (IS_INTER(top_type) && !h->pps.constrained_intra_pred)) pred= 2; else{ pred= -1; } h->intra4x4_pred_mode_cache[4+8*0]= h->intra4x4_pred_mode_cache[5+8*0]= h->intra4x4_pred_mode_cache[6+8*0]= h->intra4x4_pred_mode_cache[7+8*0]= pred; } for(i=0; i<2; i++){ if(IS_INTRA4x4(left_type[i])){ h->intra4x4_pred_mode_cache[3+8*1 + 2*8*i]= h->intra4x4_pred_mode[left_xy[i]][left_block[0+2*i]]; h->intra4x4_pred_mode_cache[3+8*2 + 2*8*i]= h->intra4x4_pred_mode[left_xy[i]][left_block[1+2*i]]; }else{ int pred; if(IS_INTRA16x16(left_type[i]) || (IS_INTER(left_type[i]) && !h->pps.constrained_intra_pred)) pred= 2; else{ pred= -1; } h->intra4x4_pred_mode_cache[3+8*1 + 2*8*i]= h->intra4x4_pred_mode_cache[3+8*2 + 2*8*i]= pred; } } } } /* 0 . T T. T T T T 1 L . .L . . . . 2 L . .L . . . . 3 . T TL . . . . 4 L . .L . . . . 5 L . .. . . . . */ //FIXME constraint_intra_pred & partitioning & nnz (lets hope this is just a typo in the spec) if(top_type){ h->non_zero_count_cache[4+8*0]= h->non_zero_count[top_xy][0]; h->non_zero_count_cache[5+8*0]= h->non_zero_count[top_xy][1]; h->non_zero_count_cache[6+8*0]= h->non_zero_count[top_xy][2]; h->non_zero_count_cache[7+8*0]= h->non_zero_count[top_xy][3]; h->non_zero_count_cache[1+8*0]= h->non_zero_count[top_xy][7]; h->non_zero_count_cache[2+8*0]= h->non_zero_count[top_xy][8]; h->non_zero_count_cache[1+8*3]= h->non_zero_count[top_xy][10]; h->non_zero_count_cache[2+8*3]= h->non_zero_count[top_xy][11]; h->top_cbp= h->cbp_table[top_xy]; }else{ h->non_zero_count_cache[4+8*0]= h->non_zero_count_cache[5+8*0]= h->non_zero_count_cache[6+8*0]= h->non_zero_count_cache[7+8*0]= h->non_zero_count_cache[1+8*0]= h->non_zero_count_cache[2+8*0]= h->non_zero_count_cache[1+8*3]= h->non_zero_count_cache[2+8*3]= h->pps.cabac && !IS_INTRA(mb_type) ? 0 : 64; if(IS_INTRA(mb_type)) h->top_cbp= 0x1C0; else h->top_cbp= 0; } if(left_type[0]){ h->non_zero_count_cache[3+8*1]= h->non_zero_count[left_xy[0]][6]; h->non_zero_count_cache[3+8*2]= h->non_zero_count[left_xy[0]][5]; h->non_zero_count_cache[0+8*1]= h->non_zero_count[left_xy[0]][9]; //FIXME left_block h->non_zero_count_cache[0+8*4]= h->non_zero_count[left_xy[0]][12]; h->left_cbp= h->cbp_table[left_xy[0]]; //FIXME interlacing }else{ h->non_zero_count_cache[3+8*1]= h->non_zero_count_cache[3+8*2]= h->non_zero_count_cache[0+8*1]= h->non_zero_count_cache[0+8*4]= h->pps.cabac && !IS_INTRA(mb_type) ? 0 : 64; if(IS_INTRA(mb_type)) h->left_cbp= 0x1C0;//FIXME interlacing else h->left_cbp= 0; } if(left_type[1]){ h->non_zero_count_cache[3+8*3]= h->non_zero_count[left_xy[1]][4]; h->non_zero_count_cache[3+8*4]= h->non_zero_count[left_xy[1]][3]; h->non_zero_count_cache[0+8*2]= h->non_zero_count[left_xy[1]][8]; h->non_zero_count_cache[0+8*5]= h->non_zero_count[left_xy[1]][11]; }else{ h->non_zero_count_cache[3+8*3]= h->non_zero_count_cache[3+8*4]= h->non_zero_count_cache[0+8*2]= h->non_zero_count_cache[0+8*5]= h->pps.cabac && !IS_INTRA(mb_type) ? 0 : 64; } #if 1 //FIXME direct mb can skip much of this if(IS_INTER(mb_type) || (IS_DIRECT(mb_type) && h->direct_spatial_mv_pred)){ int list; for(list=0; list<2; list++){ if((!IS_8X8(mb_type)) && !USES_LIST(mb_type, list) && !IS_DIRECT(mb_type)){ /*if(!h->mv_cache_clean[list]){ memset(h->mv_cache [list], 0, 8*5*2*sizeof(int16_t)); //FIXME clean only input? clean at all? memset(h->ref_cache[list], PART_NOT_AVAILABLE, 8*5*sizeof(int8_t)); h->mv_cache_clean[list]= 1; }*/ continue; } h->mv_cache_clean[list]= 0; if(IS_INTER(topleft_type)){ const int b_xy = h->mb2b_xy[topleft_xy] + 3 + 3*h->b_stride; const int b8_xy= h->mb2b8_xy[topleft_xy] + 1 + h->b8_stride; *(uint32_t*)h->mv_cache[list][scan8[0] - 1 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy]; h->ref_cache[list][scan8[0] - 1 - 1*8]= s->current_picture.ref_index[list][b8_xy]; }else{ *(uint32_t*)h->mv_cache[list][scan8[0] - 1 - 1*8]= 0; h->ref_cache[list][scan8[0] - 1 - 1*8]= topleft_type ? LIST_NOT_USED : PART_NOT_AVAILABLE; } if(IS_INTER(top_type)){ const int b_xy= h->mb2b_xy[top_xy] + 3*h->b_stride; const int b8_xy= h->mb2b8_xy[top_xy] + h->b8_stride; *(uint32_t*)h->mv_cache[list][scan8[0] + 0 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 0]; *(uint32_t*)h->mv_cache[list][scan8[0] + 1 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 1]; *(uint32_t*)h->mv_cache[list][scan8[0] + 2 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 2]; *(uint32_t*)h->mv_cache[list][scan8[0] + 3 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + 3]; h->ref_cache[list][scan8[0] + 0 - 1*8]= h->ref_cache[list][scan8[0] + 1 - 1*8]= s->current_picture.ref_index[list][b8_xy + 0]; h->ref_cache[list][scan8[0] + 2 - 1*8]= h->ref_cache[list][scan8[0] + 3 - 1*8]= s->current_picture.ref_index[list][b8_xy + 1]; }else{ *(uint32_t*)h->mv_cache [list][scan8[0] + 0 - 1*8]= *(uint32_t*)h->mv_cache [list][scan8[0] + 1 - 1*8]= *(uint32_t*)h->mv_cache [list][scan8[0] + 2 - 1*8]= *(uint32_t*)h->mv_cache [list][scan8[0] + 3 - 1*8]= 0; *(uint32_t*)&h->ref_cache[list][scan8[0] + 0 - 1*8]= ((top_type ? LIST_NOT_USED : PART_NOT_AVAILABLE)&0xFF)*0x01010101; } if(IS_INTER(topright_type)){ const int b_xy= h->mb2b_xy[topright_xy] + 3*h->b_stride; const int b8_xy= h->mb2b8_xy[topright_xy] + h->b8_stride; *(uint32_t*)h->mv_cache[list][scan8[0] + 4 - 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy]; h->ref_cache[list][scan8[0] + 4 - 1*8]= s->current_picture.ref_index[list][b8_xy]; }else{ *(uint32_t*)h->mv_cache [list][scan8[0] + 4 - 1*8]= 0; h->ref_cache[list][scan8[0] + 4 - 1*8]= topright_type ? LIST_NOT_USED : PART_NOT_AVAILABLE; } //FIXME unify cleanup or sth if(IS_INTER(left_type[0])){ const int b_xy= h->mb2b_xy[left_xy[0]] + 3; const int b8_xy= h->mb2b8_xy[left_xy[0]] + 1; *(uint32_t*)h->mv_cache[list][scan8[0] - 1 + 0*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + h->b_stride*left_block[0]]; *(uint32_t*)h->mv_cache[list][scan8[0] - 1 + 1*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + h->b_stride*left_block[1]]; h->ref_cache[list][scan8[0] - 1 + 0*8]= h->ref_cache[list][scan8[0] - 1 + 1*8]= s->current_picture.ref_index[list][b8_xy + h->b8_stride*(left_block[0]>>1)]; }else{ *(uint32_t*)h->mv_cache [list][scan8[0] - 1 + 0*8]= *(uint32_t*)h->mv_cache [list][scan8[0] - 1 + 1*8]= 0; h->ref_cache[list][scan8[0] - 1 + 0*8]= h->ref_cache[list][scan8[0] - 1 + 1*8]= left_type[0] ? LIST_NOT_USED : PART_NOT_AVAILABLE; } if(IS_INTER(left_type[1])){ const int b_xy= h->mb2b_xy[left_xy[1]] + 3; const int b8_xy= h->mb2b8_xy[left_xy[1]] + 1; *(uint32_t*)h->mv_cache[list][scan8[0] - 1 + 2*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + h->b_stride*left_block[2]]; *(uint32_t*)h->mv_cache[list][scan8[0] - 1 + 3*8]= *(uint32_t*)s->current_picture.motion_val[list][b_xy + h->b_stride*left_block[3]]; h->ref_cache[list][scan8[0] - 1 + 2*8]= h->ref_cache[list][scan8[0] - 1 + 3*8]= s->current_picture.ref_index[list][b8_xy + h->b8_stride*(left_block[2]>>1)]; }else{ *(uint32_t*)h->mv_cache [list][scan8[0] - 1 + 2*8]= *(uint32_t*)h->mv_cache [list][scan8[0] - 1 + 3*8]= 0; h->ref_cache[list][scan8[0] - 1 + 2*8]= h->ref_cache[list][scan8[0] - 1 + 3*8]= left_type[0] ? LIST_NOT_USED : PART_NOT_AVAILABLE; } if(for_deblock) continue; h->ref_cache[list][scan8[5 ]+1] = h->ref_cache[list][scan8[7 ]+1] = h->ref_cache[list][scan8[13]+1] = //FIXME remove past 3 (init somewher else) h->ref_cache[list][scan8[4 ]] = h->ref_cache[list][scan8[12]] = PART_NOT_AVAILABLE; *(uint32_t*)h->mv_cache [list][scan8[5 ]+1]= *(uint32_t*)h->mv_cache [list][scan8[7 ]+1]= *(uint32_t*)h->mv_cache [list][scan8[13]+1]= //FIXME remove past 3 (init somewher else) *(uint32_t*)h->mv_cache [list][scan8[4 ]]= *(uint32_t*)h->mv_cache [list][scan8[12]]= 0; if( h->pps.cabac ) { /* XXX beurk, Load mvd */ if(IS_INTER(topleft_type)){ const int b_xy = h->mb2b_xy[topleft_xy] + 3 + 3*h->b_stride; *(uint32_t*)h->mvd_cache[list][scan8[0] - 1 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy]; }else{ *(uint32_t*)h->mvd_cache[list][scan8[0] - 1 - 1*8]= 0; } if(IS_INTER(top_type)){ const int b_xy= h->mb2b_xy[top_xy] + 3*h->b_stride; *(uint32_t*)h->mvd_cache[list][scan8[0] + 0 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 0]; *(uint32_t*)h->mvd_cache[list][scan8[0] + 1 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 1]; *(uint32_t*)h->mvd_cache[list][scan8[0] + 2 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 2]; *(uint32_t*)h->mvd_cache[list][scan8[0] + 3 - 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + 3]; }else{ *(uint32_t*)h->mvd_cache [list][scan8[0] + 0 - 1*8]= *(uint32_t*)h->mvd_cache [list][scan8[0] + 1 - 1*8]= *(uint32_t*)h->mvd_cache [list][scan8[0] + 2 - 1*8]= *(uint32_t*)h->mvd_cache [list][scan8[0] + 3 - 1*8]= 0; } if(IS_INTER(left_type[0])){ const int b_xy= h->mb2b_xy[left_xy[0]] + 3; *(uint32_t*)h->mvd_cache[list][scan8[0] - 1 + 0*8]= *(uint32_t*)h->mvd_table[list][b_xy + h->b_stride*left_block[0]]; *(uint32_t*)h->mvd_cache[list][scan8[0] - 1 + 1*8]= *(uint32_t*)h->mvd_table[list][b_xy + h->b_stride*left_block[1]]; }else{ *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 0*8]= *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 1*8]= 0; } if(IS_INTER(left_type[1])){ const int b_xy= h->mb2b_xy[left_xy[1]] + 3; *(uint32_t*)h->mvd_cache[list][scan8[0] - 1 + 2*8]= *(uint32_t*)h->mvd_table[list][b_xy + h->b_stride*left_block[2]]; *(uint32_t*)h->mvd_cache[list][scan8[0] - 1 + 3*8]= *(uint32_t*)h->mvd_table[list][b_xy + h->b_stride*left_block[3]]; }else{ *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 2*8]= *(uint32_t*)h->mvd_cache [list][scan8[0] - 1 + 3*8]= 0; } *(uint32_t*)h->mvd_cache [list][scan8[5 ]+1]= *(uint32_t*)h->mvd_cache [list][scan8[7 ]+1]= *(uint32_t*)h->mvd_cache [list][scan8[13]+1]= //FIXME remove past 3 (init somewher else) *(uint32_t*)h->mvd_cache [list][scan8[4 ]]= *(uint32_t*)h->mvd_cache [list][scan8[12]]= 0; if(h->slice_type == B_TYPE){ fill_rectangle(&h->direct_cache[scan8[0]], 4, 4, 8, 0, 1); if(IS_DIRECT(top_type)){ *(uint32_t*)&h->direct_cache[scan8[0] - 1*8]= 0x01010101; }else if(IS_8X8(top_type)){ int b8_xy = h->mb2b8_xy[top_xy] + h->b8_stride; h->direct_cache[scan8[0] + 0 - 1*8]= h->direct_table[b8_xy]; h->direct_cache[scan8[0] + 2 - 1*8]= h->direct_table[b8_xy + 1]; }else{ *(uint32_t*)&h->direct_cache[scan8[0] - 1*8]= 0; } //FIXME interlacing if(IS_DIRECT(left_type[0])){ h->direct_cache[scan8[0] - 1 + 0*8]= h->direct_cache[scan8[0] - 1 + 2*8]= 1; }else if(IS_8X8(left_type[0])){ int b8_xy = h->mb2b8_xy[left_xy[0]] + 1; h->direct_cache[scan8[0] - 1 + 0*8]= h->direct_table[b8_xy]; h->direct_cache[scan8[0] - 1 + 2*8]= h->direct_table[b8_xy + h->b8_stride]; }else{ h->direct_cache[scan8[0] - 1 + 0*8]= h->direct_cache[scan8[0] - 1 + 2*8]= 0; } } } } } #endif } static inline void write_back_intra_pred_mode(H264Context *h){ MpegEncContext * const s = &h->s; const int mb_xy= s->mb_x + s->mb_y*s->mb_stride; h->intra4x4_pred_mode[mb_xy][0]= h->intra4x4_pred_mode_cache[7+8*1]; h->intra4x4_pred_mode[mb_xy][1]= h->intra4x4_pred_mode_cache[7+8*2]; h->intra4x4_pred_mode[mb_xy][2]= h->intra4x4_pred_mode_cache[7+8*3]; h->intra4x4_pred_mode[mb_xy][3]= h->intra4x4_pred_mode_cache[7+8*4]; h->intra4x4_pred_mode[mb_xy][4]= h->intra4x4_pred_mode_cache[4+8*4]; h->intra4x4_pred_mode[mb_xy][5]= h->intra4x4_pred_mode_cache[5+8*4]; h->intra4x4_pred_mode[mb_xy][6]= h->intra4x4_pred_mode_cache[6+8*4]; } /** * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks. */ static inline int check_intra4x4_pred_mode(H264Context *h){ MpegEncContext * const s = &h->s; static const int8_t top [12]= {-1, 0,LEFT_DC_PRED,-1,-1,-1,-1,-1, 0}; static const int8_t left[12]= { 0,-1, TOP_DC_PRED, 0,-1,-1,-1, 0,-1,DC_128_PRED}; int i; if(!(h->top_samples_available&0x8000)){ for(i=0; i<4; i++){ int status= top[ h->intra4x4_pred_mode_cache[scan8[0] + i] ]; if(status<0){ av_log(h->s.avctx, AV_LOG_ERROR, "top block unavailable for requested intra4x4 mode %d at %d %d\n", status, s->mb_x, s->mb_y); return -1; } else if(status){ h->intra4x4_pred_mode_cache[scan8[0] + i]= status; } } } if(!(h->left_samples_available&0x8000)){ for(i=0; i<4; i++){ int status= left[ h->intra4x4_pred_mode_cache[scan8[0] + 8*i] ]; if(status<0){ av_log(h->s.avctx, AV_LOG_ERROR, "left block unavailable for requested intra4x4 mode %d at %d %d\n", status, s->mb_x, s->mb_y); return -1; } else if(status){ h->intra4x4_pred_mode_cache[scan8[0] + 8*i]= status; } } } return 0; } //FIXME cleanup like next /** * checks if the top & left blocks are available if needed & changes the dc mode so it only uses the available blocks. */ static inline int check_intra_pred_mode(H264Context *h, int mode){ MpegEncContext * const s = &h->s; static const int8_t top [7]= {LEFT_DC_PRED8x8, 1,-1,-1}; static const int8_t left[7]= { TOP_DC_PRED8x8,-1, 2,-1,DC_128_PRED8x8}; if(mode < 0 || mode > 6) { av_log(h->s.avctx, AV_LOG_ERROR, "out of range intra chroma pred mode at %d %d\n", s->mb_x, s->mb_y); return -1; } if(!(h->top_samples_available&0x8000)){ mode= top[ mode ]; if(mode<0){ av_log(h->s.avctx, AV_LOG_ERROR, "top block unavailable for requested intra mode at %d %d\n", s->mb_x, s->mb_y); return -1; } } if(!(h->left_samples_available&0x8000)){ mode= left[ mode ]; if(mode<0){ av_log(h->s.avctx, AV_LOG_ERROR, "left block unavailable for requested intra mode at %d %d\n", s->mb_x, s->mb_y); return -1; } } return mode; } /** * gets the predicted intra4x4 prediction mode. */ static inline int pred_intra_mode(H264Context *h, int n){ const int index8= scan8[n]; const int left= h->intra4x4_pred_mode_cache[index8 - 1]; const int top = h->intra4x4_pred_mode_cache[index8 - 8]; const int min= FFMIN(left, top); tprintf("mode:%d %d min:%d\n", left ,top, min); if(min<0) return DC_PRED; else return min; } static inline void write_back_non_zero_count(H264Context *h){ MpegEncContext * const s = &h->s; const int mb_xy= s->mb_x + s->mb_y*s->mb_stride; h->non_zero_count[mb_xy][0]= h->non_zero_count_cache[4+8*4]; h->non_zero_count[mb_xy][1]= h->non_zero_count_cache[5+8*4]; h->non_zero_count[mb_xy][2]= h->non_zero_count_cache[6+8*4]; h->non_zero_count[mb_xy][3]= h->non_zero_count_cache[7+8*4]; h->non_zero_count[mb_xy][4]= h->non_zero_count_cache[7+8*3]; h->non_zero_count[mb_xy][5]= h->non_zero_count_cache[7+8*2]; h->non_zero_count[mb_xy][6]= h->non_zero_count_cache[7+8*1]; h->non_zero_count[mb_xy][7]= h->non_zero_count_cache[1+8*2]; h->non_zero_count[mb_xy][8]= h->non_zero_count_cache[2+8*2]; h->non_zero_count[mb_xy][9]= h->non_zero_count_cache[2+8*1]; h->non_zero_count[mb_xy][10]=h->non_zero_count_cache[1+8*5]; h->non_zero_count[mb_xy][11]=h->non_zero_count_cache[2+8*5]; h->non_zero_count[mb_xy][12]=h->non_zero_count_cache[2+8*4]; } /** * gets the predicted number of non zero coefficients. * @param n block index */ static inline int pred_non_zero_count(H264Context *h, int n){ const int index8= scan8[n]; const int left= h->non_zero_count_cache[index8 - 1]; const int top = h->non_zero_count_cache[index8 - 8]; int i= left + top; if(i<64) i= (i+1)>>1; tprintf("pred_nnz L%X T%X n%d s%d P%X\n", left, top, n, scan8[n], i&31); return i&31; } static inline int fetch_diagonal_mv(H264Context *h, const int16_t **C, int i, int list, int part_width){ const int topright_ref= h->ref_cache[list][ i - 8 + part_width ]; if(topright_ref != PART_NOT_AVAILABLE){ *C= h->mv_cache[list][ i - 8 + part_width ]; return topright_ref; }else{ tprintf("topright MV not available\n"); *C= h->mv_cache[list][ i - 8 - 1 ]; return h->ref_cache[list][ i - 8 - 1 ]; } } /** * gets the predicted MV. * @param n the block index * @param part_width the width of the partition (4, 8,16) -> (1, 2, 4) * @param mx the x component of the predicted motion vector * @param my the y component of the predicted motion vector */ static inline void pred_motion(H264Context * const h, int n, int part_width, int list, int ref, int * const mx, int * const my){ const int index8= scan8[n]; const int top_ref= h->ref_cache[list][ index8 - 8 ]; const int left_ref= h->ref_cache[list][ index8 - 1 ]; const int16_t * const A= h->mv_cache[list][ index8 - 1 ]; const int16_t * const B= h->mv_cache[list][ index8 - 8 ]; const int16_t * C; int diagonal_ref, match_count; assert(part_width==1 || part_width==2 || part_width==4); /* mv_cache B . . A T T T T U . . L . . , . U . . L . . . . U . . L . . , . . . . L . . . . */ diagonal_ref= fetch_diagonal_mv(h, &C, index8, list, part_width); match_count= (diagonal_ref==ref) + (top_ref==ref) + (left_ref==ref); tprintf("pred_motion match_count=%d\n", match_count); if(match_count > 1){ //most common *mx= mid_pred(A[0], B[0], C[0]); *my= mid_pred(A[1], B[1], C[1]); }else if(match_count==1){ if(left_ref==ref){ *mx= A[0]; *my= A[1]; }else if(top_ref==ref){ *mx= B[0]; *my= B[1]; }else{ *mx= C[0]; *my= C[1]; } }else{ if(top_ref == PART_NOT_AVAILABLE && diagonal_ref == PART_NOT_AVAILABLE && left_ref != PART_NOT_AVAILABLE){ *mx= A[0]; *my= A[1]; }else{ *mx= mid_pred(A[0], B[0], C[0]); *my= mid_pred(A[1], B[1], C[1]); } } tprintf("pred_motion (%2d %2d %2d) (%2d %2d %2d) (%2d %2d %2d) -> (%2d %2d %2d) at %2d %2d %d list %d\n", top_ref, B[0], B[1], diagonal_ref, C[0], C[1], left_ref, A[0], A[1], ref, *mx, *my, h->s.mb_x, h->s.mb_y, n, list); } /** * gets the directionally predicted 16x8 MV. * @param n the block index * @param mx the x component of the predicted motion vector * @param my the y component of the predicted motion vector */ static inline void pred_16x8_motion(H264Context * const h, int n, int list, int ref, int * const mx, int * const my){ if(n==0){ const int top_ref= h->ref_cache[list][ scan8[0] - 8 ]; const int16_t * const B= h->mv_cache[list][ scan8[0] - 8 ]; tprintf("pred_16x8: (%2d %2d %2d) at %2d %2d %d list %d\n", top_ref, B[0], B[1], h->s.mb_x, h->s.mb_y, n, list); if(top_ref == ref){ *mx= B[0]; *my= B[1]; return; } }else{ const int left_ref= h->ref_cache[list][ scan8[8] - 1 ]; const int16_t * const A= h->mv_cache[list][ scan8[8] - 1 ]; tprintf("pred_16x8: (%2d %2d %2d) at %2d %2d %d list %d\n", left_ref, A[0], A[1], h->s.mb_x, h->s.mb_y, n, list); if(left_ref == ref){ *mx= A[0]; *my= A[1]; return; } } //RARE pred_motion(h, n, 4, list, ref, mx, my); } /** * gets the directionally predicted 8x16 MV. * @param n the block index * @param mx the x component of the predicted motion vector * @param my the y component of the predicted motion vector */ static inline void pred_8x16_motion(H264Context * const h, int n, int list, int ref, int * const mx, int * const my){ if(n==0){ const int left_ref= h->ref_cache[list][ scan8[0] - 1 ]; const int16_t * const A= h->mv_cache[list][ scan8[0] - 1 ]; tprintf("pred_8x16: (%2d %2d %2d) at %2d %2d %d list %d\n", left_ref, A[0], A[1], h->s.mb_x, h->s.mb_y, n, list); if(left_ref == ref){ *mx= A[0]; *my= A[1]; return; } }else{ const int16_t * C; int diagonal_ref; diagonal_ref= fetch_diagonal_mv(h, &C, scan8[4], list, 2); tprintf("pred_8x16: (%2d %2d %2d) at %2d %2d %d list %d\n", diagonal_ref, C[0], C[1], h->s.mb_x, h->s.mb_y, n, list); if(diagonal_ref == ref){ *mx= C[0]; *my= C[1]; return; } } //RARE pred_motion(h, n, 2, list, ref, mx, my); } static inline void pred_pskip_motion(H264Context * const h, int * const mx, int * const my){ const int top_ref = h->ref_cache[0][ scan8[0] - 8 ]; const int left_ref= h->ref_cache[0][ scan8[0] - 1 ]; tprintf("pred_pskip: (%d) (%d) at %2d %2d\n", top_ref, left_ref, h->s.mb_x, h->s.mb_y); if(top_ref == PART_NOT_AVAILABLE || left_ref == PART_NOT_AVAILABLE || (top_ref == 0 && *(uint32_t*)h->mv_cache[0][ scan8[0] - 8 ] == 0) || (left_ref == 0 && *(uint32_t*)h->mv_cache[0][ scan8[0] - 1 ] == 0)){ *mx = *my = 0; return; } pred_motion(h, 0, 4, 0, 0, mx, my); return; } static inline void direct_dist_scale_factor(H264Context * const h){ const int poc = h->s.current_picture_ptr->poc; const int poc1 = h->ref_list[1][0].poc; int i; for(i=0; iref_count[0]; i++){ int poc0 = h->ref_list[0][i].poc; int td = clip(poc1 - poc0, -128, 127); if(td == 0 /* FIXME || pic0 is a long-term ref */){ h->dist_scale_factor[i] = 256; }else{ int tb = clip(poc - poc0, -128, 127); int tx = (16384 + (ABS(td) >> 1)) / td; h->dist_scale_factor[i] = clip((tb*tx + 32) >> 6, -1024, 1023); } } } static inline void pred_direct_motion(H264Context * const h, int *mb_type){ MpegEncContext * const s = &h->s; const int mb_xy = s->mb_x + s->mb_y*s->mb_stride; const int b8_xy = 2*s->mb_x + 2*s->mb_y*h->b8_stride; const int b4_xy = 4*s->mb_x + 4*s->mb_y*h->b_stride; const int mb_type_col = h->ref_list[1][0].mb_type[mb_xy]; const int16_t (*l1mv0)[2] = (const int16_t (*)[2]) &h->ref_list[1][0].motion_val[0][b4_xy]; const int8_t *l1ref0 = &h->ref_list[1][0].ref_index[0][b8_xy]; const int is_b8x8 = IS_8X8(*mb_type); int sub_mb_type; int i8, i4; if(IS_8X8(mb_type_col) && !h->sps.direct_8x8_inference_flag){ /* FIXME save sub mb types from previous frames (or derive from MVs) * so we know exactly what block size to use */ sub_mb_type = MB_TYPE_8x8|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_4x4 */ *mb_type = MB_TYPE_8x8; }else if(!is_b8x8 && (IS_16X16(mb_type_col) || IS_INTRA(mb_type_col))){ sub_mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_8x8 */ *mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_16x16 */ }else{ sub_mb_type = MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2; /* B_SUB_8x8 */ *mb_type = MB_TYPE_8x8; } if(!is_b8x8) *mb_type |= MB_TYPE_DIRECT2; tprintf("mb_type = %08x, sub_mb_type = %08x, is_b8x8 = %d, mb_type_col = %08x\n", *mb_type, sub_mb_type, is_b8x8, mb_type_col); if(h->direct_spatial_mv_pred){ int ref[2]; int mv[2][2]; int list; /* ref = min(neighbors) */ for(list=0; list<2; list++){ int refa = h->ref_cache[list][scan8[0] - 1]; int refb = h->ref_cache[list][scan8[0] - 8]; int refc = h->ref_cache[list][scan8[0] - 8 + 4]; if(refc == -2) refc = h->ref_cache[list][scan8[0] - 8 - 1]; ref[list] = refa; if(ref[list] < 0 || (refb < ref[list] && refb >= 0)) ref[list] = refb; if(ref[list] < 0 || (refc < ref[list] && refc >= 0)) ref[list] = refc; if(ref[list] < 0) ref[list] = -1; } if(ref[0] < 0 && ref[1] < 0){ ref[0] = ref[1] = 0; mv[0][0] = mv[0][1] = mv[1][0] = mv[1][1] = 0; }else{ for(list=0; list<2; list++){ if(ref[list] >= 0) pred_motion(h, 0, 4, list, ref[list], &mv[list][0], &mv[list][1]); else mv[list][0] = mv[list][1] = 0; } } if(ref[1] < 0){ *mb_type &= ~MB_TYPE_P0L1; sub_mb_type &= ~MB_TYPE_P0L1; }else if(ref[0] < 0){ *mb_type &= ~MB_TYPE_P0L0; sub_mb_type &= ~MB_TYPE_P0L0; } if(IS_16X16(*mb_type)){ fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, ref[0], 1); fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, ref[1], 1); if(!IS_INTRA(mb_type_col) && l1ref0[0] == 0 && ABS(l1mv0[0][0]) <= 1 && ABS(l1mv0[0][1]) <= 1){ if(ref[0] > 0) fill_rectangle(&h->mv_cache[0][scan8[0]], 4, 4, 8, pack16to32(mv[0][0],mv[0][1]), 4); else fill_rectangle(&h->mv_cache[0][scan8[0]], 4, 4, 8, 0, 4); if(ref[1] > 0) fill_rectangle(&h->mv_cache[1][scan8[0]], 4, 4, 8, pack16to32(mv[1][0],mv[1][1]), 4); else fill_rectangle(&h->mv_cache[1][scan8[0]], 4, 4, 8, 0, 4); }else{ fill_rectangle(&h->mv_cache[0][scan8[0]], 4, 4, 8, pack16to32(mv[0][0],mv[0][1]), 4); fill_rectangle(&h->mv_cache[1][scan8[0]], 4, 4, 8, pack16to32(mv[1][0],mv[1][1]), 4); } }else{ for(i8=0; i8<4; i8++){ const int x8 = i8&1; const int y8 = i8>>1; if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8])) continue; h->sub_mb_type[i8] = sub_mb_type; fill_rectangle(&h->mv_cache[0][scan8[i8*4]], 2, 2, 8, pack16to32(mv[0][0],mv[0][1]), 4); fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, pack16to32(mv[1][0],mv[1][1]), 4); fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, ref[0], 1); fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, ref[1], 1); /* col_zero_flag */ if(!IS_INTRA(mb_type_col) && l1ref0[x8 + y8*h->b8_stride] == 0){ for(i4=0; i4<4; i4++){ const int16_t *mv_col = l1mv0[x8*2 + (i4&1) + (y8*2 + (i4>>1))*h->b_stride]; if(ABS(mv_col[0]) <= 1 && ABS(mv_col[1]) <= 1){ if(ref[0] == 0) *(uint32_t*)h->mv_cache[0][scan8[i8*4+i4]] = 0; if(ref[1] == 0) *(uint32_t*)h->mv_cache[1][scan8[i8*4+i4]] = 0; } } } } } }else{ /* direct temporal mv pred */ /* FIXME assumes that L1ref0 used the same ref lists as current frame */ if(IS_16X16(*mb_type)){ fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, 0, 1); if(IS_INTRA(mb_type_col)){ fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, 0, 1); fill_rectangle(&h-> mv_cache[0][scan8[0]], 4, 4, 8, 0, 4); fill_rectangle(&h-> mv_cache[1][scan8[0]], 4, 4, 8, 0, 4); }else{ const int ref0 = l1ref0[0]; const int dist_scale_factor = h->dist_scale_factor[ref0]; const int16_t *mv_col = l1mv0[0]; int mv_l0[2]; mv_l0[0] = (dist_scale_factor * mv_col[0] + 128) >> 8; mv_l0[1] = (dist_scale_factor * mv_col[1] + 128) >> 8; fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, ref0, 1); fill_rectangle(&h-> mv_cache[0][scan8[0]], 4, 4, 8, pack16to32(mv_l0[0],mv_l0[1]), 4); fill_rectangle(&h-> mv_cache[1][scan8[0]], 4, 4, 8, pack16to32(mv_l0[0]-mv_col[0],mv_l0[1]-mv_col[1]), 4); } }else{ for(i8=0; i8<4; i8++){ const int x8 = i8&1; const int y8 = i8>>1; int ref0, dist_scale_factor; if(is_b8x8 && !IS_DIRECT(h->sub_mb_type[i8])) continue; h->sub_mb_type[i8] = sub_mb_type; if(IS_INTRA(mb_type_col)){ fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, 0, 1); fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, 0, 1); fill_rectangle(&h-> mv_cache[0][scan8[i8*4]], 2, 2, 8, 0, 4); fill_rectangle(&h-> mv_cache[1][scan8[i8*4]], 2, 2, 8, 0, 4); continue; } ref0 = l1ref0[x8 + y8*h->b8_stride]; dist_scale_factor = h->dist_scale_factor[ref0]; fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, ref0, 1); fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, 0, 1); for(i4=0; i4<4; i4++){ const int16_t *mv_col = l1mv0[x8*2 + (i4&1) + (y8*2 + (i4>>1))*h->b_stride]; int16_t *mv_l0 = h->mv_cache[0][scan8[i8*4+i4]]; mv_l0[0] = (dist_scale_factor * mv_col[0] + 128) >> 8; mv_l0[1] = (dist_scale_factor * mv_col[1] + 128) >> 8; *(uint32_t*)h->mv_cache[1][scan8[i8*4+i4]] = pack16to32(mv_l0[0]-mv_col[0],mv_l0[1]-mv_col[1]); } } } } } static inline void write_back_motion(H264Context *h, int mb_type){ MpegEncContext * const s = &h->s; const int b_xy = 4*s->mb_x + 4*s->mb_y*h->b_stride; const int b8_xy= 2*s->mb_x + 2*s->mb_y*h->b8_stride; int list; for(list=0; list<2; list++){ int y; if((!IS_8X8(mb_type)) && !USES_LIST(mb_type, list)){ if(1){ //FIXME skip or never read if mb_type doesnt use it for(y=0; y<4; y++){ *(uint64_t*)s->current_picture.motion_val[list][b_xy + 0 + y*h->b_stride]= *(uint64_t*)s->current_picture.motion_val[list][b_xy + 2 + y*h->b_stride]= 0; } if( h->pps.cabac ) { /* FIXME needed ? */ for(y=0; y<4; y++){ *(uint64_t*)h->mvd_table[list][b_xy + 0 + y*h->b_stride]= *(uint64_t*)h->mvd_table[list][b_xy + 2 + y*h->b_stride]= 0; } } for(y=0; y<2; y++){ *(uint16_t*)&s->current_picture.ref_index[list][b8_xy + y*h->b8_stride]= (LIST_NOT_USED&0xFF)*0x0101; } } continue; } for(y=0; y<4; y++){ *(uint64_t*)s->current_picture.motion_val[list][b_xy + 0 + y*h->b_stride]= *(uint64_t*)h->mv_cache[list][scan8[0]+0 + 8*y]; *(uint64_t*)s->current_picture.motion_val[list][b_xy + 2 + y*h->b_stride]= *(uint64_t*)h->mv_cache[list][scan8[0]+2 + 8*y]; } if( h->pps.cabac ) { for(y=0; y<4; y++){ *(uint64_t*)h->mvd_table[list][b_xy + 0 + y*h->b_stride]= *(uint64_t*)h->mvd_cache[list][scan8[0]+0 + 8*y]; *(uint64_t*)h->mvd_table[list][b_xy + 2 + y*h->b_stride]= *(uint64_t*)h->mvd_cache[list][scan8[0]+2 + 8*y]; } } for(y=0; y<2; y++){ s->current_picture.ref_index[list][b8_xy + 0 + y*h->b8_stride]= h->ref_cache[list][scan8[0]+0 + 16*y]; s->current_picture.ref_index[list][b8_xy + 1 + y*h->b8_stride]= h->ref_cache[list][scan8[0]+2 + 16*y]; } } if(h->slice_type == B_TYPE && h->pps.cabac){ if(IS_8X8(mb_type)){ h->direct_table[b8_xy+1+0*h->b8_stride] = IS_DIRECT(h->sub_mb_type[1]) ? 1 : 0; h->direct_table[b8_xy+0+1*h->b8_stride] = IS_DIRECT(h->sub_mb_type[2]) ? 1 : 0; h->direct_table[b8_xy+1+1*h->b8_stride] = IS_DIRECT(h->sub_mb_type[3]) ? 1 : 0; } } } /** * Decodes a network abstraction layer unit. * @param consumed is the number of bytes used as input * @param length is the length of the array * @param dst_length is the number of decoded bytes FIXME here or a decode rbsp ttailing? * @returns decoded bytes, might be src+1 if no escapes */ static uint8_t *decode_nal(H264Context *h, uint8_t *src, int *dst_length, int *consumed, int length){ int i, si, di; uint8_t *dst; // src[0]&0x80; //forbidden bit h->nal_ref_idc= src[0]>>5; h->nal_unit_type= src[0]&0x1F; src++; length--; #if 0 for(i=0; i0 && src[i-1]==0) i--; if(i+2=length-1){ //no escaped 0 *dst_length= length; *consumed= length+1; //+1 for the header return src; } h->rbsp_buffer= av_fast_realloc(h->rbsp_buffer, &h->rbsp_buffer_size, length); dst= h->rbsp_buffer; //printf("deoding esc\n"); si=di=0; while(si=0); assert(dst_length>0); dst[0]= (h->nal_ref_idc<<5) + h->nal_unit_type; if(length==0) return 1; escape_count= 0; for(i=0; i0 && src[i-1]==0) i--; if(i+2 dst_length) return -1; //this should be damn rare (hopefully) h->rbsp_buffer= av_fast_realloc(h->rbsp_buffer, &h->rbsp_buffer_size, length + escape_count); temp= h->rbsp_buffer; //printf("encoding esc\n"); si= 0; di= 0; while(si < length){ if(si+2>=1; } return 0; } /** * idct tranforms the 16 dc values and dequantize them. * @param qp quantization parameter */ static void h264_luma_dc_dequant_idct_c(DCTELEM *block, int qp){ const int qmul= dequant_coeff[qp][0]; #define stride 16 int i; int temp[16]; //FIXME check if this is a good idea static const int x_offset[4]={0, 1*stride, 4* stride, 5*stride}; static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride}; //memset(block, 64, 2*256); //return; for(i=0; i<4; i++){ const int offset= y_offset[i]; const int z0= block[offset+stride*0] + block[offset+stride*4]; const int z1= block[offset+stride*0] - block[offset+stride*4]; const int z2= block[offset+stride*1] - block[offset+stride*5]; const int z3= block[offset+stride*1] + block[offset+stride*5]; temp[4*i+0]= z0+z3; temp[4*i+1]= z1+z2; temp[4*i+2]= z1-z2; temp[4*i+3]= z0-z3; } for(i=0; i<4; i++){ const int offset= x_offset[i]; const int z0= temp[4*0+i] + temp[4*2+i]; const int z1= temp[4*0+i] - temp[4*2+i]; const int z2= temp[4*1+i] - temp[4*3+i]; const int z3= temp[4*1+i] + temp[4*3+i]; block[stride*0 +offset]= ((z0 + z3)*qmul + 2)>>2; //FIXME think about merging this into decode_resdual block[stride*2 +offset]= ((z1 + z2)*qmul + 2)>>2; block[stride*8 +offset]= ((z1 - z2)*qmul + 2)>>2; block[stride*10+offset]= ((z0 - z3)*qmul + 2)>>2; } } #if 0 /** * dct tranforms the 16 dc values. * @param qp quantization parameter ??? FIXME */ static void h264_luma_dc_dct_c(DCTELEM *block/*, int qp*/){ // const int qmul= dequant_coeff[qp][0]; int i; int temp[16]; //FIXME check if this is a good idea static const int x_offset[4]={0, 1*stride, 4* stride, 5*stride}; static const int y_offset[4]={0, 2*stride, 8* stride, 10*stride}; for(i=0; i<4; i++){ const int offset= y_offset[i]; const int z0= block[offset+stride*0] + block[offset+stride*4]; const int z1= block[offset+stride*0] - block[offset+stride*4]; const int z2= block[offset+stride*1] - block[offset+stride*5]; const int z3= block[offset+stride*1] + block[offset+stride*5]; temp[4*i+0]= z0+z3; temp[4*i+1]= z1+z2; temp[4*i+2]= z1-z2; temp[4*i+3]= z0-z3; } for(i=0; i<4; i++){ const int offset= x_offset[i]; const int z0= temp[4*0+i] + temp[4*2+i]; const int z1= temp[4*0+i] - temp[4*2+i]; const int z2= temp[4*1+i] - temp[4*3+i]; const int z3= temp[4*1+i] + temp[4*3+i]; block[stride*0 +offset]= (z0 + z3)>>1; block[stride*2 +offset]= (z1 + z2)>>1; block[stride*8 +offset]= (z1 - z2)>>1; block[stride*10+offset]= (z0 - z3)>>1; } } #endif #undef xStride #undef stride static void chroma_dc_dequant_idct_c(DCTELEM *block, int qp){ const int qmul= dequant_coeff[qp][0]; const int stride= 16*2; const int xStride= 16; int a,b,c,d,e; a= block[stride*0 + xStride*0]; b= block[stride*0 + xStride*1]; c= block[stride*1 + xStride*0]; d= block[stride*1 + xStride*1]; e= a-b; a= a+b; b= c-d; c= c+d; block[stride*0 + xStride*0]= ((a+c)*qmul + 0)>>1; block[stride*0 + xStride*1]= ((e+b)*qmul + 0)>>1; block[stride*1 + xStride*0]= ((a-c)*qmul + 0)>>1; block[stride*1 + xStride*1]= ((e-b)*qmul + 0)>>1; } #if 0 static void chroma_dc_dct_c(DCTELEM *block){ const int stride= 16*2; const int xStride= 16; int a,b,c,d,e; a= block[stride*0 + xStride*0]; b= block[stride*0 + xStride*1]; c= block[stride*1 + xStride*0]; d= block[stride*1 + xStride*1]; e= a-b; a= a+b; b= c-d; c= c+d; block[stride*0 + xStride*0]= (a+c); block[stride*0 + xStride*1]= (e+b); block[stride*1 + xStride*0]= (a-c); block[stride*1 + xStride*1]= (e-b); } #endif /** * gets the chroma qp. */ static inline int get_chroma_qp(H264Context *h, int qscale){ return chroma_qp[clip(qscale + h->pps.chroma_qp_index_offset, 0, 51)]; } #if 0 static void h264_diff_dct_c(DCTELEM *block, uint8_t *src1, uint8_t *src2, int stride){ int i; //FIXME try int temp instead of block for(i=0; i<4; i++){ const int d0= src1[0 + i*stride] - src2[0 + i*stride]; const int d1= src1[1 + i*stride] - src2[1 + i*stride]; const int d2= src1[2 + i*stride] - src2[2 + i*stride]; const int d3= src1[3 + i*stride] - src2[3 + i*stride]; const int z0= d0 + d3; const int z3= d0 - d3; const int z1= d1 + d2; const int z2= d1 - d2; block[0 + 4*i]= z0 + z1; block[1 + 4*i]= 2*z3 + z2; block[2 + 4*i]= z0 - z1; block[3 + 4*i]= z3 - 2*z2; } for(i=0; i<4; i++){ const int z0= block[0*4 + i] + block[3*4 + i]; const int z3= block[0*4 + i] - block[3*4 + i]; const int z1= block[1*4 + i] + block[2*4 + i]; const int z2= block[1*4 + i] - block[2*4 + i]; block[0*4 + i]= z0 + z1; block[1*4 + i]= 2*z3 + z2; block[2*4 + i]= z0 - z1; block[3*4 + i]= z3 - 2*z2; } } #endif //FIXME need to check that this doesnt overflow signed 32 bit for low qp, iam not sure, its very close //FIXME check that gcc inlines this (and optimizes intra & seperate_dc stuff away) static inline int quantize_c(DCTELEM *block, uint8_t *scantable, int qscale, int intra, int seperate_dc){ int i; const int * const quant_table= quant_coeff[qscale]; const int bias= intra ? (1<dc_threshold2){ if(level>0){ level= (dc_bias + level)>>(QUANT_SHIFT-2); block[0]= level; }else{ level= (dc_bias - level)>>(QUANT_SHIFT-2); block[0]= -level; } // last_non_zero = i; }else{ block[0]=0; } }else{ const int dc_bias= intra ? (1<<(QUANT_SHIFT+1))/3 : (1<<(QUANT_SHIFT+1))/6; const unsigned int dc_threshold1= (1<<(QUANT_SHIFT+1)) - dc_bias - 1; const unsigned int dc_threshold2= (dc_threshold1<<1); int level= block[0]*quant_table[0]; if(((unsigned)(level+dc_threshold1))>dc_threshold2){ if(level>0){ level= (dc_bias + level)>>(QUANT_SHIFT+1); block[0]= level; }else{ level= (dc_bias - level)>>(QUANT_SHIFT+1); block[0]= -level; } // last_non_zero = i; }else{ block[0]=0; } } last_non_zero= 0; i=1; }else{ last_non_zero= -1; i=0; } for(; i<16; i++){ const int j= scantable[i]; int level= block[j]*quant_table[j]; // if( bias+level >= (1<<(QMAT_SHIFT - 3)) // || bias-level >= (1<<(QMAT_SHIFT - 3))){ if(((unsigned)(level+threshold1))>threshold2){ if(level>0){ level= (bias + level)>>QUANT_SHIFT; block[j]= level; }else{ level= (bias - level)>>QUANT_SHIFT; block[j]= -level; } last_non_zero = i; }else{ block[j]=0; } } return last_non_zero; } static void pred4x4_vertical_c(uint8_t *src, uint8_t *topright, int stride){ const uint32_t a= ((uint32_t*)(src-stride))[0]; ((uint32_t*)(src+0*stride))[0]= a; ((uint32_t*)(src+1*stride))[0]= a; ((uint32_t*)(src+2*stride))[0]= a; ((uint32_t*)(src+3*stride))[0]= a; } static void pred4x4_horizontal_c(uint8_t *src, uint8_t *topright, int stride){ ((uint32_t*)(src+0*stride))[0]= src[-1+0*stride]*0x01010101; ((uint32_t*)(src+1*stride))[0]= src[-1+1*stride]*0x01010101; ((uint32_t*)(src+2*stride))[0]= src[-1+2*stride]*0x01010101; ((uint32_t*)(src+3*stride))[0]= src[-1+3*stride]*0x01010101; } static void pred4x4_dc_c(uint8_t *src, uint8_t *topright, int stride){ const int dc= ( src[-stride] + src[1-stride] + src[2-stride] + src[3-stride] + src[-1+0*stride] + src[-1+1*stride] + src[-1+2*stride] + src[-1+3*stride] + 4) >>3; ((uint32_t*)(src+0*stride))[0]= ((uint32_t*)(src+1*stride))[0]= ((uint32_t*)(src+2*stride))[0]= ((uint32_t*)(src+3*stride))[0]= dc* 0x01010101; } static void pred4x4_left_dc_c(uint8_t *src, uint8_t *topright, int stride){ const int dc= ( src[-1+0*stride] + src[-1+1*stride] + src[-1+2*stride] + src[-1+3*stride] + 2) >>2; ((uint32_t*)(src+0*stride))[0]= ((uint32_t*)(src+1*stride))[0]= ((uint32_t*)(src+2*stride))[0]= ((uint32_t*)(src+3*stride))[0]= dc* 0x01010101; } static void pred4x4_top_dc_c(uint8_t *src, uint8_t *topright, int stride){ const int dc= ( src[-stride] + src[1-stride] + src[2-stride] + src[3-stride] + 2) >>2; ((uint32_t*)(src+0*stride))[0]= ((uint32_t*)(src+1*stride))[0]= ((uint32_t*)(src+2*stride))[0]= ((uint32_t*)(src+3*stride))[0]= dc* 0x01010101; } static void pred4x4_128_dc_c(uint8_t *src, uint8_t *topright, int stride){ ((uint32_t*)(src+0*stride))[0]= ((uint32_t*)(src+1*stride))[0]= ((uint32_t*)(src+2*stride))[0]= ((uint32_t*)(src+3*stride))[0]= 128U*0x01010101U; } #define LOAD_TOP_RIGHT_EDGE\ const int t4= topright[0];\ const int t5= topright[1];\ const int t6= topright[2];\ const int t7= topright[3];\ #define LOAD_LEFT_EDGE\ const int l0= src[-1+0*stride];\ const int l1= src[-1+1*stride];\ const int l2= src[-1+2*stride];\ const int l3= src[-1+3*stride];\ #define LOAD_TOP_EDGE\ const int t0= src[ 0-1*stride];\ const int t1= src[ 1-1*stride];\ const int t2= src[ 2-1*stride];\ const int t3= src[ 3-1*stride];\ static void pred4x4_down_right_c(uint8_t *src, uint8_t *topright, int stride){ const int lt= src[-1-1*stride]; LOAD_TOP_EDGE LOAD_LEFT_EDGE src[0+3*stride]=(l3 + 2*l2 + l1 + 2)>>2; src[0+2*stride]= src[1+3*stride]=(l2 + 2*l1 + l0 + 2)>>2; src[0+1*stride]= src[1+2*stride]= src[2+3*stride]=(l1 + 2*l0 + lt + 2)>>2; src[0+0*stride]= src[1+1*stride]= src[2+2*stride]= src[3+3*stride]=(l0 + 2*lt + t0 + 2)>>2; src[1+0*stride]= src[2+1*stride]= src[3+2*stride]=(lt + 2*t0 + t1 + 2)>>2; src[2+0*stride]= src[3+1*stride]=(t0 + 2*t1 + t2 + 2)>>2; src[3+0*stride]=(t1 + 2*t2 + t3 + 2)>>2; } static void pred4x4_down_left_c(uint8_t *src, uint8_t *topright, int stride){ LOAD_TOP_EDGE LOAD_TOP_RIGHT_EDGE // LOAD_LEFT_EDGE src[0+0*stride]=(t0 + t2 + 2*t1 + 2)>>2; src[1+0*stride]= src[0+1*stride]=(t1 + t3 + 2*t2 + 2)>>2; src[2+0*stride]= src[1+1*stride]= src[0+2*stride]=(t2 + t4 + 2*t3 + 2)>>2; src[3+0*stride]= src[2+1*stride]= src[1+2*stride]= src[0+3*stride]=(t3 + t5 + 2*t4 + 2)>>2; src[3+1*stride]= src[2+2*stride]= src[1+3*stride]=(t4 + t6 + 2*t5 + 2)>>2; src[3+2*stride]= src[2+3*stride]=(t5 + t7 + 2*t6 + 2)>>2; src[3+3*stride]=(t6 + 3*t7 + 2)>>2; } static void pred4x4_vertical_right_c(uint8_t *src, uint8_t *topright, int stride){ const int lt= src[-1-1*stride]; LOAD_TOP_EDGE LOAD_LEFT_EDGE const __attribute__((unused)) int unu= l3; src[0+0*stride]= src[1+2*stride]=(lt + t0 + 1)>>1; src[1+0*stride]= src[2+2*stride]=(t0 + t1 + 1)>>1; src[2+0*stride]= src[3+2*stride]=(t1 + t2 + 1)>>1; src[3+0*stride]=(t2 + t3 + 1)>>1; src[0+1*stride]= src[1+3*stride]=(l0 + 2*lt + t0 + 2)>>2; src[1+1*stride]= src[2+3*stride]=(lt + 2*t0 + t1 + 2)>>2; src[2+1*stride]= src[3+3*stride]=(t0 + 2*t1 + t2 + 2)>>2; src[3+1*stride]=(t1 + 2*t2 + t3 + 2)>>2; src[0+2*stride]=(lt + 2*l0 + l1 + 2)>>2; src[0+3*stride]=(l0 + 2*l1 + l2 + 2)>>2; } static void pred4x4_vertical_left_c(uint8_t *src, uint8_t *topright, int stride){ LOAD_TOP_EDGE LOAD_TOP_RIGHT_EDGE const __attribute__((unused)) int unu= t7; src[0+0*stride]=(t0 + t1 + 1)>>1; src[1+0*stride]= src[0+2*stride]=(t1 + t2 + 1)>>1; src[2+0*stride]= src[1+2*stride]=(t2 + t3 + 1)>>1; src[3+0*stride]= src[2+2*stride]=(t3 + t4+ 1)>>1; src[3+2*stride]=(t4 + t5+ 1)>>1; src[0+1*stride]=(t0 + 2*t1 + t2 + 2)>>2; src[1+1*stride]= src[0+3*stride]=(t1 + 2*t2 + t3 + 2)>>2; src[2+1*stride]= src[1+3*stride]=(t2 + 2*t3 + t4 + 2)>>2; src[3+1*stride]= src[2+3*stride]=(t3 + 2*t4 + t5 + 2)>>2; src[3+3*stride]=(t4 + 2*t5 + t6 + 2)>>2; } static void pred4x4_horizontal_up_c(uint8_t *src, uint8_t *topright, int stride){ LOAD_LEFT_EDGE src[0+0*stride]=(l0 + l1 + 1)>>1; src[1+0*stride]=(l0 + 2*l1 + l2 + 2)>>2; src[2+0*stride]= src[0+1*stride]=(l1 + l2 + 1)>>1; src[3+0*stride]= src[1+1*stride]=(l1 + 2*l2 + l3 + 2)>>2; src[2+1*stride]= src[0+2*stride]=(l2 + l3 + 1)>>1; src[3+1*stride]= src[1+2*stride]=(l2 + 2*l3 + l3 + 2)>>2; src[3+2*stride]= src[1+3*stride]= src[0+3*stride]= src[2+2*stride]= src[2+3*stride]= src[3+3*stride]=l3; } static void pred4x4_horizontal_down_c(uint8_t *src, uint8_t *topright, int stride){ const int lt= src[-1-1*stride]; LOAD_TOP_EDGE LOAD_LEFT_EDGE const __attribute__((unused)) int unu= t3; src[0+0*stride]= src[2+1*stride]=(lt + l0 + 1)>>1; src[1+0*stride]= src[3+1*stride]=(l0 + 2*lt + t0 + 2)>>2; src[2+0*stride]=(lt + 2*t0 + t1 + 2)>>2; src[3+0*stride]=(t0 + 2*t1 + t2 + 2)>>2; src[0+1*stride]= src[2+2*stride]=(l0 + l1 + 1)>>1; src[1+1*stride]= src[3+2*stride]=(lt + 2*l0 + l1 + 2)>>2; src[0+2*stride]= src[2+3*stride]=(l1 + l2+ 1)>>1; src[1+2*stride]= src[3+3*stride]=(l0 + 2*l1 + l2 + 2)>>2; src[0+3*stride]=(l2 + l3 + 1)>>1; src[1+3*stride]=(l1 + 2*l2 + l3 + 2)>>2; } static void pred16x16_vertical_c(uint8_t *src, int stride){ int i; const uint32_t a= ((uint32_t*)(src-stride))[0]; const uint32_t b= ((uint32_t*)(src-stride))[1]; const uint32_t c= ((uint32_t*)(src-stride))[2]; const uint32_t d= ((uint32_t*)(src-stride))[3]; for(i=0; i<16; i++){ ((uint32_t*)(src+i*stride))[0]= a; ((uint32_t*)(src+i*stride))[1]= b; ((uint32_t*)(src+i*stride))[2]= c; ((uint32_t*)(src+i*stride))[3]= d; } } static void pred16x16_horizontal_c(uint8_t *src, int stride){ int i; for(i=0; i<16; i++){ ((uint32_t*)(src+i*stride))[0]= ((uint32_t*)(src+i*stride))[1]= ((uint32_t*)(src+i*stride))[2]= ((uint32_t*)(src+i*stride))[3]= src[-1+i*stride]*0x01010101; } } static void pred16x16_dc_c(uint8_t *src, int stride){ int i, dc=0; for(i=0;i<16; i++){ dc+= src[-1+i*stride]; } for(i=0;i<16; i++){ dc+= src[i-stride]; } dc= 0x01010101*((dc + 16)>>5); for(i=0; i<16; i++){ ((uint32_t*)(src+i*stride))[0]= ((uint32_t*)(src+i*stride))[1]= ((uint32_t*)(src+i*stride))[2]= ((uint32_t*)(src+i*stride))[3]= dc; } } static void pred16x16_left_dc_c(uint8_t *src, int stride){ int i, dc=0; for(i=0;i<16; i++){ dc+= src[-1+i*stride]; } dc= 0x01010101*((dc + 8)>>4); for(i=0; i<16; i++){ ((uint32_t*)(src+i*stride))[0]= ((uint32_t*)(src+i*stride))[1]= ((uint32_t*)(src+i*stride))[2]= ((uint32_t*)(src+i*stride))[3]= dc; } } static void pred16x16_top_dc_c(uint8_t *src, int stride){ int i, dc=0; for(i=0;i<16; i++){ dc+= src[i-stride]; } dc= 0x01010101*((dc + 8)>>4); for(i=0; i<16; i++){ ((uint32_t*)(src+i*stride))[0]= ((uint32_t*)(src+i*stride))[1]= ((uint32_t*)(src+i*stride))[2]= ((uint32_t*)(src+i*stride))[3]= dc; } } static void pred16x16_128_dc_c(uint8_t *src, int stride){ int i; for(i=0; i<16; i++){ ((uint32_t*)(src+i*stride))[0]= ((uint32_t*)(src+i*stride))[1]= ((uint32_t*)(src+i*stride))[2]= ((uint32_t*)(src+i*stride))[3]= 0x01010101U*128U; } } static inline void pred16x16_plane_compat_c(uint8_t *src, int stride, const int svq3){ int i, j, k; int a; uint8_t *cm = cropTbl + MAX_NEG_CROP; const uint8_t * const src0 = src+7-stride; const uint8_t *src1 = src+8*stride-1; const uint8_t *src2 = src1-2*stride; // == src+6*stride-1; int H = src0[1] - src0[-1]; int V = src1[0] - src2[ 0]; for(k=2; k<=8; ++k) { src1 += stride; src2 -= stride; H += k*(src0[k] - src0[-k]); V += k*(src1[0] - src2[ 0]); } if(svq3){ H = ( 5*(H/4) ) / 16; V = ( 5*(V/4) ) / 16; /* required for 100% accuracy */ i = H; H = V; V = i; }else{ H = ( 5*H+32 ) >> 6; V = ( 5*V+32 ) >> 6; } a = 16*(src1[0] + src2[16] + 1) - 7*(V+H); for(j=16; j>0; --j) { int b = a; a += V; for(i=-16; i<0; i+=4) { src[16+i] = cm[ (b ) >> 5 ]; src[17+i] = cm[ (b+ H) >> 5 ]; src[18+i] = cm[ (b+2*H) >> 5 ]; src[19+i] = cm[ (b+3*H) >> 5 ]; b += 4*H; } src += stride; } } static void pred16x16_plane_c(uint8_t *src, int stride){ pred16x16_plane_compat_c(src, stride, 0); } static void pred8x8_vertical_c(uint8_t *src, int stride){ int i; const uint32_t a= ((uint32_t*)(src-stride))[0]; const uint32_t b= ((uint32_t*)(src-stride))[1]; for(i=0; i<8; i++){ ((uint32_t*)(src+i*stride))[0]= a; ((uint32_t*)(src+i*stride))[1]= b; } } static void pred8x8_horizontal_c(uint8_t *src, int stride){ int i; for(i=0; i<8; i++){ ((uint32_t*)(src+i*stride))[0]= ((uint32_t*)(src+i*stride))[1]= src[-1+i*stride]*0x01010101; } } static void pred8x8_128_dc_c(uint8_t *src, int stride){ int i; for(i=0; i<4; i++){ ((uint32_t*)(src+i*stride))[0]= ((uint32_t*)(src+i*stride))[1]= 0x01010101U*128U; } for(i=4; i<8; i++){ ((uint32_t*)(src+i*stride))[0]= ((uint32_t*)(src+i*stride))[1]= 0x01010101U*128U; } } static void pred8x8_left_dc_c(uint8_t *src, int stride){ int i; int dc0, dc2; dc0=dc2=0; for(i=0;i<4; i++){ dc0+= src[-1+i*stride]; dc2+= src[-1+(i+4)*stride]; } dc0= 0x01010101*((dc0 + 2)>>2); dc2= 0x01010101*((dc2 + 2)>>2); for(i=0; i<4; i++){ ((uint32_t*)(src+i*stride))[0]= ((uint32_t*)(src+i*stride))[1]= dc0; } for(i=4; i<8; i++){ ((uint32_t*)(src+i*stride))[0]= ((uint32_t*)(src+i*stride))[1]= dc2; } } static void pred8x8_top_dc_c(uint8_t *src, int stride){ int i; int dc0, dc1; dc0=dc1=0; for(i=0;i<4; i++){ dc0+= src[i-stride]; dc1+= src[4+i-stride]; } dc0= 0x01010101*((dc0 + 2)>>2); dc1= 0x01010101*((dc1 + 2)>>2); for(i=0; i<4; i++){ ((uint32_t*)(src+i*stride))[0]= dc0; ((uint32_t*)(src+i*stride))[1]= dc1; } for(i=4; i<8; i++){ ((uint32_t*)(src+i*stride))[0]= dc0; ((uint32_t*)(src+i*stride))[1]= dc1; } } static void pred8x8_dc_c(uint8_t *src, int stride){ int i; int dc0, dc1, dc2, dc3; dc0=dc1=dc2=0; for(i=0;i<4; i++){ dc0+= src[-1+i*stride] + src[i-stride]; dc1+= src[4+i-stride]; dc2+= src[-1+(i+4)*stride]; } dc3= 0x01010101*((dc1 + dc2 + 4)>>3); dc0= 0x01010101*((dc0 + 4)>>3); dc1= 0x01010101*((dc1 + 2)>>2); dc2= 0x01010101*((dc2 + 2)>>2); for(i=0; i<4; i++){ ((uint32_t*)(src+i*stride))[0]= dc0; ((uint32_t*)(src+i*stride))[1]= dc1; } for(i=4; i<8; i++){ ((uint32_t*)(src+i*stride))[0]= dc2; ((uint32_t*)(src+i*stride))[1]= dc3; } } static void pred8x8_plane_c(uint8_t *src, int stride){ int j, k; int a; uint8_t *cm = cropTbl + MAX_NEG_CROP; const uint8_t * const src0 = src+3-stride; const uint8_t *src1 = src+4*stride-1; const uint8_t *src2 = src1-2*stride; // == src+2*stride-1; int H = src0[1] - src0[-1]; int V = src1[0] - src2[ 0]; for(k=2; k<=4; ++k) { src1 += stride; src2 -= stride; H += k*(src0[k] - src0[-k]); V += k*(src1[0] - src2[ 0]); } H = ( 17*H+16 ) >> 5; V = ( 17*V+16 ) >> 5; a = 16*(src1[0] + src2[8]+1) - 3*(V+H); for(j=8; j>0; --j) { int b = a; a += V; src[0] = cm[ (b ) >> 5 ]; src[1] = cm[ (b+ H) >> 5 ]; src[2] = cm[ (b+2*H) >> 5 ]; src[3] = cm[ (b+3*H) >> 5 ]; src[4] = cm[ (b+4*H) >> 5 ]; src[5] = cm[ (b+5*H) >> 5 ]; src[6] = cm[ (b+6*H) >> 5 ]; src[7] = cm[ (b+7*H) >> 5 ]; src += stride; } } static inline void mc_dir_part(H264Context *h, Picture *pic, int n, int square, int chroma_height, int delta, int list, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, int src_x_offset, int src_y_offset, qpel_mc_func *qpix_op, h264_chroma_mc_func chroma_op){ MpegEncContext * const s = &h->s; const int mx= h->mv_cache[list][ scan8[n] ][0] + src_x_offset*8; const int my= h->mv_cache[list][ scan8[n] ][1] + src_y_offset*8; const int luma_xy= (mx&3) + ((my&3)<<2); uint8_t * src_y = pic->data[0] + (mx>>2) + (my>>2)*s->linesize; uint8_t * src_cb= pic->data[1] + (mx>>3) + (my>>3)*s->uvlinesize; uint8_t * src_cr= pic->data[2] + (mx>>3) + (my>>3)*s->uvlinesize; int extra_width= (s->flags&CODEC_FLAG_EMU_EDGE) ? 0 : 16; //FIXME increase edge?, IMHO not worth it int extra_height= extra_width; int emu=0; const int full_mx= mx>>2; const int full_my= my>>2; assert(pic->data[0]); if(mx&7) extra_width -= 3; if(my&7) extra_height -= 3; if( full_mx < 0-extra_width || full_my < 0-extra_height || full_mx + 16/*FIXME*/ > s->width + extra_width || full_my + 16/*FIXME*/ > s->height + extra_height){ ff_emulated_edge_mc(s->edge_emu_buffer, src_y - 2 - 2*s->linesize, s->linesize, 16+5, 16+5/*FIXME*/, full_mx-2, full_my-2, s->width, s->height); src_y= s->edge_emu_buffer + 2 + 2*s->linesize; emu=1; } qpix_op[luma_xy](dest_y, src_y, s->linesize); //FIXME try variable height perhaps? if(!square){ qpix_op[luma_xy](dest_y + delta, src_y + delta, s->linesize); } if(s->flags&CODEC_FLAG_GRAY) return; if(emu){ ff_emulated_edge_mc(s->edge_emu_buffer, src_cb, s->uvlinesize, 9, 9/*FIXME*/, (mx>>3), (my>>3), s->width>>1, s->height>>1); src_cb= s->edge_emu_buffer; } chroma_op(dest_cb, src_cb, s->uvlinesize, chroma_height, mx&7, my&7); if(emu){ ff_emulated_edge_mc(s->edge_emu_buffer, src_cr, s->uvlinesize, 9, 9/*FIXME*/, (mx>>3), (my>>3), s->width>>1, s->height>>1); src_cr= s->edge_emu_buffer; } chroma_op(dest_cr, src_cr, s->uvlinesize, chroma_height, mx&7, my&7); } static inline void mc_part_std(H264Context *h, int n, int square, int chroma_height, int delta, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, int x_offset, int y_offset, qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put, qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg, int list0, int list1){ MpegEncContext * const s = &h->s; qpel_mc_func *qpix_op= qpix_put; h264_chroma_mc_func chroma_op= chroma_put; dest_y += 2*x_offset + 2*y_offset*s-> linesize; dest_cb += x_offset + y_offset*s->uvlinesize; dest_cr += x_offset + y_offset*s->uvlinesize; x_offset += 8*s->mb_x; y_offset += 8*s->mb_y; if(list0){ Picture *ref= &h->ref_list[0][ h->ref_cache[0][ scan8[n] ] ]; mc_dir_part(h, ref, n, square, chroma_height, delta, 0, dest_y, dest_cb, dest_cr, x_offset, y_offset, qpix_op, chroma_op); qpix_op= qpix_avg; chroma_op= chroma_avg; } if(list1){ Picture *ref= &h->ref_list[1][ h->ref_cache[1][ scan8[n] ] ]; mc_dir_part(h, ref, n, square, chroma_height, delta, 1, dest_y, dest_cb, dest_cr, x_offset, y_offset, qpix_op, chroma_op); } } static inline void mc_part_weighted(H264Context *h, int n, int square, int chroma_height, int delta, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, int x_offset, int y_offset, qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put, h264_weight_func luma_weight_op, h264_weight_func chroma_weight_op, h264_biweight_func luma_weight_avg, h264_biweight_func chroma_weight_avg, int list0, int list1){ MpegEncContext * const s = &h->s; dest_y += 2*x_offset + 2*y_offset*s-> linesize; dest_cb += x_offset + y_offset*s->uvlinesize; dest_cr += x_offset + y_offset*s->uvlinesize; x_offset += 8*s->mb_x; y_offset += 8*s->mb_y; if(list0 && list1){ /* don't optimize for luma-only case, since B-frames usually * use implicit weights => chroma too. */ uint8_t *tmp_cb = s->obmc_scratchpad; uint8_t *tmp_cr = tmp_cb + 8*s->uvlinesize; uint8_t *tmp_y = tmp_cr + 8*s->uvlinesize; int refn0 = h->ref_cache[0][ scan8[n] ]; int refn1 = h->ref_cache[1][ scan8[n] ]; mc_dir_part(h, &h->ref_list[0][refn0], n, square, chroma_height, delta, 0, dest_y, dest_cb, dest_cr, x_offset, y_offset, qpix_put, chroma_put); mc_dir_part(h, &h->ref_list[1][refn1], n, square, chroma_height, delta, 1, tmp_y, tmp_cb, tmp_cr, x_offset, y_offset, qpix_put, chroma_put); if(h->use_weight == 2){ int weight0 = h->implicit_weight[refn0][refn1]; int weight1 = 64 - weight0; luma_weight_avg( dest_y, tmp_y, s-> linesize, 5, weight0, weight1, 0, 0); chroma_weight_avg(dest_cb, tmp_cb, s->uvlinesize, 5, weight0, weight1, 0, 0); chroma_weight_avg(dest_cr, tmp_cr, s->uvlinesize, 5, weight0, weight1, 0, 0); }else{ luma_weight_avg(dest_y, tmp_y, s->linesize, h->luma_log2_weight_denom, h->luma_weight[0][refn0], h->luma_weight[1][refn1], h->luma_offset[0][refn0], h->luma_offset[1][refn1]); chroma_weight_avg(dest_cb, tmp_cb, s->uvlinesize, h->chroma_log2_weight_denom, h->chroma_weight[0][refn0][0], h->chroma_weight[1][refn1][0], h->chroma_offset[0][refn0][0], h->chroma_offset[1][refn1][0]); chroma_weight_avg(dest_cr, tmp_cr, s->uvlinesize, h->chroma_log2_weight_denom, h->chroma_weight[0][refn0][1], h->chroma_weight[1][refn1][1], h->chroma_offset[0][refn0][1], h->chroma_offset[1][refn1][1]); } }else{ int list = list1 ? 1 : 0; int refn = h->ref_cache[list][ scan8[n] ]; Picture *ref= &h->ref_list[list][refn]; mc_dir_part(h, ref, n, square, chroma_height, delta, list, dest_y, dest_cb, dest_cr, x_offset, y_offset, qpix_put, chroma_put); luma_weight_op(dest_y, s->linesize, h->luma_log2_weight_denom, h->luma_weight[list][refn], h->luma_offset[list][refn]); if(h->use_weight_chroma){ chroma_weight_op(dest_cb, s->uvlinesize, h->chroma_log2_weight_denom, h->chroma_weight[list][refn][0], h->chroma_offset[list][refn][0]); chroma_weight_op(dest_cr, s->uvlinesize, h->chroma_log2_weight_denom, h->chroma_weight[list][refn][1], h->chroma_offset[list][refn][1]); } } } static inline void mc_part(H264Context *h, int n, int square, int chroma_height, int delta, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, int x_offset, int y_offset, qpel_mc_func *qpix_put, h264_chroma_mc_func chroma_put, qpel_mc_func *qpix_avg, h264_chroma_mc_func chroma_avg, h264_weight_func *weight_op, h264_biweight_func *weight_avg, int list0, int list1){ if((h->use_weight==2 && list0 && list1 && (h->implicit_weight[ h->ref_cache[0][scan8[n]] ][ h->ref_cache[1][scan8[n]] ] != 32)) || h->use_weight==1) mc_part_weighted(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr, x_offset, y_offset, qpix_put, chroma_put, weight_op[0], weight_op[3], weight_avg[0], weight_avg[3], list0, list1); else mc_part_std(h, n, square, chroma_height, delta, dest_y, dest_cb, dest_cr, x_offset, y_offset, qpix_put, chroma_put, qpix_avg, chroma_avg, list0, list1); } static void hl_motion(H264Context *h, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, qpel_mc_func (*qpix_put)[16], h264_chroma_mc_func (*chroma_put), qpel_mc_func (*qpix_avg)[16], h264_chroma_mc_func (*chroma_avg), h264_weight_func *weight_op, h264_biweight_func *weight_avg){ MpegEncContext * const s = &h->s; const int mb_xy= s->mb_x + s->mb_y*s->mb_stride; const int mb_type= s->current_picture.mb_type[mb_xy]; assert(IS_INTER(mb_type)); if(IS_16X16(mb_type)){ mc_part(h, 0, 1, 8, 0, dest_y, dest_cb, dest_cr, 0, 0, qpix_put[0], chroma_put[0], qpix_avg[0], chroma_avg[0], &weight_op[0], &weight_avg[0], IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1)); }else if(IS_16X8(mb_type)){ mc_part(h, 0, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 0, qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0], &weight_op[1], &weight_avg[1], IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1)); mc_part(h, 8, 0, 4, 8, dest_y, dest_cb, dest_cr, 0, 4, qpix_put[1], chroma_put[0], qpix_avg[1], chroma_avg[0], &weight_op[1], &weight_avg[1], IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1)); }else if(IS_8X16(mb_type)){ mc_part(h, 0, 0, 8, 8*s->linesize, dest_y, dest_cb, dest_cr, 0, 0, qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1], &weight_op[2], &weight_avg[2], IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1)); mc_part(h, 4, 0, 8, 8*s->linesize, dest_y, dest_cb, dest_cr, 4, 0, qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1], &weight_op[2], &weight_avg[2], IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1)); }else{ int i; assert(IS_8X8(mb_type)); for(i=0; i<4; i++){ const int sub_mb_type= h->sub_mb_type[i]; const int n= 4*i; int x_offset= (i&1)<<2; int y_offset= (i&2)<<1; if(IS_SUB_8X8(sub_mb_type)){ mc_part(h, n, 1, 4, 0, dest_y, dest_cb, dest_cr, x_offset, y_offset, qpix_put[1], chroma_put[1], qpix_avg[1], chroma_avg[1], &weight_op[3], &weight_avg[3], IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1)); }else if(IS_SUB_8X4(sub_mb_type)){ mc_part(h, n , 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset, qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1], &weight_op[4], &weight_avg[4], IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1)); mc_part(h, n+2, 0, 2, 4, dest_y, dest_cb, dest_cr, x_offset, y_offset+2, qpix_put[2], chroma_put[1], qpix_avg[2], chroma_avg[1], &weight_op[4], &weight_avg[4], IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1)); }else if(IS_SUB_4X8(sub_mb_type)){ mc_part(h, n , 0, 4, 4*s->linesize, dest_y, dest_cb, dest_cr, x_offset, y_offset, qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2], &weight_op[5], &weight_avg[5], IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1)); mc_part(h, n+1, 0, 4, 4*s->linesize, dest_y, dest_cb, dest_cr, x_offset+2, y_offset, qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2], &weight_op[5], &weight_avg[5], IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1)); }else{ int j; assert(IS_SUB_4X4(sub_mb_type)); for(j=0; j<4; j++){ int sub_x_offset= x_offset + 2*(j&1); int sub_y_offset= y_offset + (j&2); mc_part(h, n+j, 1, 2, 0, dest_y, dest_cb, dest_cr, sub_x_offset, sub_y_offset, qpix_put[2], chroma_put[2], qpix_avg[2], chroma_avg[2], &weight_op[6], &weight_avg[6], IS_DIR(sub_mb_type, 0, 0), IS_DIR(sub_mb_type, 0, 1)); } } } } } static void decode_init_vlc(H264Context *h){ static int done = 0; if (!done) { int i; done = 1; init_vlc(&chroma_dc_coeff_token_vlc, CHROMA_DC_COEFF_TOKEN_VLC_BITS, 4*5, &chroma_dc_coeff_token_len [0], 1, 1, &chroma_dc_coeff_token_bits[0], 1, 1, 1); for(i=0; i<4; i++){ init_vlc(&coeff_token_vlc[i], COEFF_TOKEN_VLC_BITS, 4*17, &coeff_token_len [i][0], 1, 1, &coeff_token_bits[i][0], 1, 1, 1); } for(i=0; i<3; i++){ init_vlc(&chroma_dc_total_zeros_vlc[i], CHROMA_DC_TOTAL_ZEROS_VLC_BITS, 4, &chroma_dc_total_zeros_len [i][0], 1, 1, &chroma_dc_total_zeros_bits[i][0], 1, 1, 1); } for(i=0; i<15; i++){ init_vlc(&total_zeros_vlc[i], TOTAL_ZEROS_VLC_BITS, 16, &total_zeros_len [i][0], 1, 1, &total_zeros_bits[i][0], 1, 1, 1); } for(i=0; i<6; i++){ init_vlc(&run_vlc[i], RUN_VLC_BITS, 7, &run_len [i][0], 1, 1, &run_bits[i][0], 1, 1, 1); } init_vlc(&run7_vlc, RUN7_VLC_BITS, 16, &run_len [6][0], 1, 1, &run_bits[6][0], 1, 1, 1); } } /** * Sets the intra prediction function pointers. */ static void init_pred_ptrs(H264Context *h){ // MpegEncContext * const s = &h->s; h->pred4x4[VERT_PRED ]= pred4x4_vertical_c; h->pred4x4[HOR_PRED ]= pred4x4_horizontal_c; h->pred4x4[DC_PRED ]= pred4x4_dc_c; h->pred4x4[DIAG_DOWN_LEFT_PRED ]= pred4x4_down_left_c; h->pred4x4[DIAG_DOWN_RIGHT_PRED]= pred4x4_down_right_c; h->pred4x4[VERT_RIGHT_PRED ]= pred4x4_vertical_right_c; h->pred4x4[HOR_DOWN_PRED ]= pred4x4_horizontal_down_c; h->pred4x4[VERT_LEFT_PRED ]= pred4x4_vertical_left_c; h->pred4x4[HOR_UP_PRED ]= pred4x4_horizontal_up_c; h->pred4x4[LEFT_DC_PRED ]= pred4x4_left_dc_c; h->pred4x4[TOP_DC_PRED ]= pred4x4_top_dc_c; h->pred4x4[DC_128_PRED ]= pred4x4_128_dc_c; h->pred8x8[DC_PRED8x8 ]= pred8x8_dc_c; h->pred8x8[VERT_PRED8x8 ]= pred8x8_vertical_c; h->pred8x8[HOR_PRED8x8 ]= pred8x8_horizontal_c; h->pred8x8[PLANE_PRED8x8 ]= pred8x8_plane_c; h->pred8x8[LEFT_DC_PRED8x8]= pred8x8_left_dc_c; h->pred8x8[TOP_DC_PRED8x8 ]= pred8x8_top_dc_c; h->pred8x8[DC_128_PRED8x8 ]= pred8x8_128_dc_c; h->pred16x16[DC_PRED8x8 ]= pred16x16_dc_c; h->pred16x16[VERT_PRED8x8 ]= pred16x16_vertical_c; h->pred16x16[HOR_PRED8x8 ]= pred16x16_horizontal_c; h->pred16x16[PLANE_PRED8x8 ]= pred16x16_plane_c; h->pred16x16[LEFT_DC_PRED8x8]= pred16x16_left_dc_c; h->pred16x16[TOP_DC_PRED8x8 ]= pred16x16_top_dc_c; h->pred16x16[DC_128_PRED8x8 ]= pred16x16_128_dc_c; } static void free_tables(H264Context *h){ av_freep(&h->intra4x4_pred_mode); av_freep(&h->chroma_pred_mode_table); av_freep(&h->cbp_table); av_freep(&h->mvd_table[0]); av_freep(&h->mvd_table[1]); av_freep(&h->direct_table); av_freep(&h->non_zero_count); av_freep(&h->slice_table_base); av_freep(&h->top_border); h->slice_table= NULL; av_freep(&h->mb2b_xy); av_freep(&h->mb2b8_xy); av_freep(&h->s.obmc_scratchpad); } /** * allocates tables. * needs widzh/height */ static int alloc_tables(H264Context *h){ MpegEncContext * const s = &h->s; const int big_mb_num= s->mb_stride * (s->mb_height+1); int x,y; CHECKED_ALLOCZ(h->intra4x4_pred_mode, big_mb_num * 8 * sizeof(uint8_t)) CHECKED_ALLOCZ(h->non_zero_count , big_mb_num * 16 * sizeof(uint8_t)) CHECKED_ALLOCZ(h->slice_table_base , big_mb_num * sizeof(uint8_t)) CHECKED_ALLOCZ(h->top_border , s->mb_width * (16+8+8) * sizeof(uint8_t)) CHECKED_ALLOCZ(h->cbp_table, big_mb_num * sizeof(uint16_t)) if( h->pps.cabac ) { CHECKED_ALLOCZ(h->chroma_pred_mode_table, big_mb_num * sizeof(uint8_t)) CHECKED_ALLOCZ(h->mvd_table[0], 32*big_mb_num * sizeof(uint16_t)); CHECKED_ALLOCZ(h->mvd_table[1], 32*big_mb_num * sizeof(uint16_t)); CHECKED_ALLOCZ(h->direct_table, 32*big_mb_num * sizeof(uint8_t)); } memset(h->slice_table_base, -1, big_mb_num * sizeof(uint8_t)); h->slice_table= h->slice_table_base + s->mb_stride + 1; CHECKED_ALLOCZ(h->mb2b_xy , big_mb_num * sizeof(uint16_t)); CHECKED_ALLOCZ(h->mb2b8_xy , big_mb_num * sizeof(uint16_t)); for(y=0; ymb_height; y++){ for(x=0; xmb_width; x++){ const int mb_xy= x + y*s->mb_stride; const int b_xy = 4*x + 4*y*h->b_stride; const int b8_xy= 2*x + 2*y*h->b8_stride; h->mb2b_xy [mb_xy]= b_xy; h->mb2b8_xy[mb_xy]= b8_xy; } } s->obmc_scratchpad = NULL; return 0; fail: free_tables(h); return -1; } static void common_init(H264Context *h){ MpegEncContext * const s = &h->s; s->width = s->avctx->width; s->height = s->avctx->height; s->codec_id= s->avctx->codec->id; init_pred_ptrs(h); s->unrestricted_mv=1; s->decode=1; //FIXME } static int decode_init(AVCodecContext *avctx){ H264Context *h= avctx->priv_data; MpegEncContext * const s = &h->s; MPV_decode_defaults(s); s->avctx = avctx; common_init(h); s->out_format = FMT_H264; s->workaround_bugs= avctx->workaround_bugs; // set defaults // s->decode_mb= ff_h263_decode_mb; s->low_delay= 1; avctx->pix_fmt= PIX_FMT_YUV420P; decode_init_vlc(h); if(avctx->codec_tag != 0x31637661 && avctx->codec_tag != 0x31435641) // avc1 h->is_avc = 0; else { if((avctx->extradata_size == 0) || (avctx->extradata == NULL)) { av_log(avctx, AV_LOG_ERROR, "AVC codec requires avcC data\n"); return -1; } h->is_avc = 1; h->got_avcC = 0; } return 0; } static void frame_start(H264Context *h){ MpegEncContext * const s = &h->s; int i; MPV_frame_start(s, s->avctx); ff_er_frame_start(s); assert(s->linesize && s->uvlinesize); for(i=0; i<16; i++){ h->block_offset[i]= 4*((scan8[i] - scan8[0])&7) + 4*s->linesize*((scan8[i] - scan8[0])>>3); h->chroma_subblock_offset[i]= 2*((scan8[i] - scan8[0])&7) + 2*s->uvlinesize*((scan8[i] - scan8[0])>>3); } for(i=0; i<4; i++){ h->block_offset[16+i]= h->block_offset[20+i]= 4*((scan8[i] - scan8[0])&7) + 4*s->uvlinesize*((scan8[i] - scan8[0])>>3); } /* can't be in alloc_tables because linesize isn't known there. * FIXME: redo bipred weight to not require extra buffer? */ if(!s->obmc_scratchpad) s->obmc_scratchpad = av_malloc(16*s->linesize + 2*8*s->uvlinesize); // s->decode= (s->flags&CODEC_FLAG_PSNR) || !s->encoding || s->current_picture.reference /*|| h->contains_intra*/ || 1; } static inline void backup_mb_border(H264Context *h, uint8_t *src_y, uint8_t *src_cb, uint8_t *src_cr, int linesize, int uvlinesize){ MpegEncContext * const s = &h->s; int i; src_y -= linesize; src_cb -= uvlinesize; src_cr -= uvlinesize; h->left_border[0]= h->top_border[s->mb_x][15]; for(i=1; i<17; i++){ h->left_border[i]= src_y[15+i* linesize]; } *(uint64_t*)(h->top_border[s->mb_x]+0)= *(uint64_t*)(src_y + 16*linesize); *(uint64_t*)(h->top_border[s->mb_x]+8)= *(uint64_t*)(src_y +8+16*linesize); if(!(s->flags&CODEC_FLAG_GRAY)){ h->left_border[17 ]= h->top_border[s->mb_x][16+7]; h->left_border[17+9]= h->top_border[s->mb_x][24+7]; for(i=1; i<9; i++){ h->left_border[i+17 ]= src_cb[7+i*uvlinesize]; h->left_border[i+17+9]= src_cr[7+i*uvlinesize]; } *(uint64_t*)(h->top_border[s->mb_x]+16)= *(uint64_t*)(src_cb+8*uvlinesize); *(uint64_t*)(h->top_border[s->mb_x]+24)= *(uint64_t*)(src_cr+8*uvlinesize); } } static inline void xchg_mb_border(H264Context *h, uint8_t *src_y, uint8_t *src_cb, uint8_t *src_cr, int linesize, int uvlinesize, int xchg){ MpegEncContext * const s = &h->s; int temp8, i; uint64_t temp64; int deblock_left = (s->mb_x > 0); int deblock_top = (s->mb_y > 0); src_y -= linesize + 1; src_cb -= uvlinesize + 1; src_cr -= uvlinesize + 1; #define XCHG(a,b,t,xchg)\ t= a;\ if(xchg)\ a= b;\ b= t; if(deblock_left){ for(i = !deblock_top; i<17; i++){ XCHG(h->left_border[i ], src_y [i* linesize], temp8, xchg); } } if(deblock_top){ XCHG(*(uint64_t*)(h->top_border[s->mb_x]+0), *(uint64_t*)(src_y +1), temp64, xchg); XCHG(*(uint64_t*)(h->top_border[s->mb_x]+8), *(uint64_t*)(src_y +9), temp64, 1); } if(!(s->flags&CODEC_FLAG_GRAY)){ if(deblock_left){ for(i = !deblock_top; i<9; i++){ XCHG(h->left_border[i+17 ], src_cb[i*uvlinesize], temp8, xchg); XCHG(h->left_border[i+17+9], src_cr[i*uvlinesize], temp8, xchg); } } if(deblock_top){ XCHG(*(uint64_t*)(h->top_border[s->mb_x]+16), *(uint64_t*)(src_cb+1), temp64, 1); XCHG(*(uint64_t*)(h->top_border[s->mb_x]+24), *(uint64_t*)(src_cr+1), temp64, 1); } } } static void hl_decode_mb(H264Context *h){ MpegEncContext * const s = &h->s; const int mb_x= s->mb_x; const int mb_y= s->mb_y; const int mb_xy= mb_x + mb_y*s->mb_stride; const int mb_type= s->current_picture.mb_type[mb_xy]; uint8_t *dest_y, *dest_cb, *dest_cr; int linesize, uvlinesize /*dct_offset*/; int i; if(!s->decode) return; if(s->mb_skiped){ } dest_y = s->current_picture.data[0] + (mb_y * 16* s->linesize ) + mb_x * 16; dest_cb = s->current_picture.data[1] + (mb_y * 8 * s->uvlinesize) + mb_x * 8; dest_cr = s->current_picture.data[2] + (mb_y * 8 * s->uvlinesize) + mb_x * 8; if (h->mb_field_decoding_flag) { linesize = s->linesize * 2; uvlinesize = s->uvlinesize * 2; if(mb_y&1){ //FIXME move out of this func? dest_y -= s->linesize*15; dest_cb-= s->linesize*7; dest_cr-= s->linesize*7; } } else { linesize = s->linesize; uvlinesize = s->uvlinesize; // dct_offset = s->linesize * 16; } if(IS_INTRA(mb_type)){ if(h->deblocking_filter) xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 1); if(!(s->flags&CODEC_FLAG_GRAY)){ h->pred8x8[ h->chroma_pred_mode ](dest_cb, uvlinesize); h->pred8x8[ h->chroma_pred_mode ](dest_cr, uvlinesize); } if(IS_INTRA4x4(mb_type)){ if(!s->encoding){ for(i=0; i<16; i++){ uint8_t * const ptr= dest_y + h->block_offset[i]; uint8_t *topright; const int dir= h->intra4x4_pred_mode_cache[ scan8[i] ]; int tr; if(dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED){ const int topright_avail= (h->topright_samples_available<block_offset[i]); if(!topright_avail){ tr= ptr[3 - linesize]*0x01010101; topright= (uint8_t*) &tr; }else if(i==5 && h->deblocking_filter){ tr= *(uint32_t*)h->top_border[mb_x+1]; topright= (uint8_t*) &tr; }else topright= ptr + 4 - linesize; }else topright= NULL; h->pred4x4[ dir ](ptr, topright, linesize); if(h->non_zero_count_cache[ scan8[i] ]){ if(s->codec_id == CODEC_ID_H264) s->dsp.h264_idct_add(ptr, h->mb + i*16, linesize); else svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, 0); } } } }else{ h->pred16x16[ h->intra16x16_pred_mode ](dest_y , linesize); if(s->codec_id == CODEC_ID_H264) h264_luma_dc_dequant_idct_c(h->mb, s->qscale); else svq3_luma_dc_dequant_idct_c(h->mb, s->qscale); } if(h->deblocking_filter) xchg_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize, 0); }else if(s->codec_id == CODEC_ID_H264){ hl_motion(h, dest_y, dest_cb, dest_cr, s->dsp.put_h264_qpel_pixels_tab, s->dsp.put_h264_chroma_pixels_tab, s->dsp.avg_h264_qpel_pixels_tab, s->dsp.avg_h264_chroma_pixels_tab, s->dsp.weight_h264_pixels_tab, s->dsp.biweight_h264_pixels_tab); } if(!IS_INTRA4x4(mb_type)){ if(s->codec_id == CODEC_ID_H264){ for(i=0; i<16; i++){ if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ //FIXME benchmark weird rule, & below uint8_t * const ptr= dest_y + h->block_offset[i]; s->dsp.h264_idct_add(ptr, h->mb + i*16, linesize); } } }else{ for(i=0; i<16; i++){ if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ //FIXME benchmark weird rule, & below uint8_t * const ptr= dest_y + h->block_offset[i]; svq3_add_idct_c(ptr, h->mb + i*16, linesize, s->qscale, IS_INTRA(mb_type) ? 1 : 0); } } } } if(!(s->flags&CODEC_FLAG_GRAY)){ chroma_dc_dequant_idct_c(h->mb + 16*16, h->chroma_qp); chroma_dc_dequant_idct_c(h->mb + 16*16+4*16, h->chroma_qp); if(s->codec_id == CODEC_ID_H264){ for(i=16; i<16+4; i++){ if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ uint8_t * const ptr= dest_cb + h->block_offset[i]; s->dsp.h264_idct_add(ptr, h->mb + i*16, uvlinesize); } } for(i=20; i<20+4; i++){ if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ uint8_t * const ptr= dest_cr + h->block_offset[i]; s->dsp.h264_idct_add(ptr, h->mb + i*16, uvlinesize); } } }else{ for(i=16; i<16+4; i++){ if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ uint8_t * const ptr= dest_cb + h->block_offset[i]; svq3_add_idct_c(ptr, h->mb + i*16, uvlinesize, chroma_qp[s->qscale + 12] - 12, 2); } } for(i=20; i<20+4; i++){ if(h->non_zero_count_cache[ scan8[i] ] || h->mb[i*16]){ uint8_t * const ptr= dest_cr + h->block_offset[i]; svq3_add_idct_c(ptr, h->mb + i*16, uvlinesize, chroma_qp[s->qscale + 12] - 12, 2); } } } } if(h->deblocking_filter) { backup_mb_border(h, dest_y, dest_cb, dest_cr, linesize, uvlinesize); fill_caches(h, mb_type, 1); //FIXME dont fill stuff which isnt used by filter_mb filter_mb(h, mb_x, mb_y, dest_y, dest_cb, dest_cr); } } /** * fills the default_ref_list. */ static int fill_default_ref_list(H264Context *h){ MpegEncContext * const s = &h->s; int i; int smallest_poc_greater_than_current = -1; Picture sorted_short_ref[16]; if(h->slice_type==B_TYPE){ int out_i; int limit= -1; /* sort frame according to poc in B slice */ for(out_i=0; out_ishort_ref_count; out_i++){ int best_i=-1; int best_poc=INT_MAX; for(i=0; ishort_ref_count; i++){ const int poc= h->short_ref[i]->poc; if(poc > limit && poc < best_poc){ best_poc= poc; best_i= i; } } assert(best_i != -1); limit= best_poc; sorted_short_ref[out_i]= *h->short_ref[best_i]; tprintf("sorted poc: %d->%d poc:%d fn:%d\n", best_i, out_i, sorted_short_ref[out_i].poc, sorted_short_ref[out_i].frame_num); if (-1 == smallest_poc_greater_than_current) { if (h->short_ref[best_i]->poc >= s->current_picture_ptr->poc) { smallest_poc_greater_than_current = out_i; } } } } if(s->picture_structure == PICT_FRAME){ if(h->slice_type==B_TYPE){ int list; tprintf("current poc: %d, smallest_poc_greater_than_current: %d\n", s->current_picture_ptr->poc, smallest_poc_greater_than_current); // find the largest poc for(list=0; list<2; list++){ int index = 0; int j= -99; int step= list ? -1 : 1; for(i=0; ishort_ref_count && index < h->ref_count[list]; i++, j+=step) { while(j<0 || j>= h->short_ref_count){ step = -step; j= smallest_poc_greater_than_current + (step>>1); } if(sorted_short_ref[j].reference != 3) continue; h->default_ref_list[list][index ]= sorted_short_ref[j]; h->default_ref_list[list][index++].pic_id= sorted_short_ref[j].frame_num; } for(i = 0; i < 16 && index < h->ref_count[ list ]; i++){ if(h->long_ref[i] == NULL) continue; if(h->long_ref[i]->reference != 3) continue; h->default_ref_list[ list ][index ]= *h->long_ref[i]; h->default_ref_list[ list ][index++].pic_id= i;; } if(list && (smallest_poc_greater_than_current<=0 || smallest_poc_greater_than_current>=h->short_ref_count) && (1 < index)){ // swap the two first elements of L1 when // L0 and L1 are identical Picture temp= h->default_ref_list[1][0]; h->default_ref_list[1][0] = h->default_ref_list[1][1]; h->default_ref_list[1][0] = temp; } if(index < h->ref_count[ list ]) memset(&h->default_ref_list[list][index], 0, sizeof(Picture)*(h->ref_count[ list ] - index)); } }else{ int index=0; for(i=0; ishort_ref_count && index < h->ref_count[0]; i++){ if(h->short_ref[i]->reference != 3) continue; //FIXME refernce field shit h->default_ref_list[0][index ]= *h->short_ref[i]; h->default_ref_list[0][index++].pic_id= h->short_ref[i]->frame_num; } for(i = 0; i < 16 && index < h->ref_count[0]; i++){ if(h->long_ref[i] == NULL) continue; if(h->long_ref[i]->reference != 3) continue; h->default_ref_list[0][index ]= *h->long_ref[i]; h->default_ref_list[0][index++].pic_id= i;; } if(index < h->ref_count[0]) memset(&h->default_ref_list[0][index], 0, sizeof(Picture)*(h->ref_count[0] - index)); } }else{ //FIELD if(h->slice_type==B_TYPE){ }else{ //FIXME second field balh } } #ifdef TRACE for (i=0; iref_count[0]; i++) { tprintf("List0: %s fn:%d 0x%p\n", (h->default_ref_list[0][i].long_ref ? "LT" : "ST"), h->default_ref_list[0][i].pic_id, h->default_ref_list[0][i].data[0]); } if(h->slice_type==B_TYPE){ for (i=0; iref_count[1]; i++) { tprintf("List1: %s fn:%d 0x%p\n", (h->default_ref_list[1][i].long_ref ? "LT" : "ST"), h->default_ref_list[1][i].pic_id, h->default_ref_list[0][i].data[0]); } } #endif return 0; } static void print_short_term(H264Context *h); static void print_long_term(H264Context *h); static int decode_ref_pic_list_reordering(H264Context *h){ MpegEncContext * const s = &h->s; int list; print_short_term(h); print_long_term(h); if(h->slice_type==I_TYPE || h->slice_type==SI_TYPE) return 0; //FIXME move beofre func for(list=0; list<2; list++){ memcpy(h->ref_list[list], h->default_ref_list[list], sizeof(Picture)*h->ref_count[list]); if(get_bits1(&s->gb)){ int pred= h->curr_pic_num; int index; for(index=0; ; index++){ int reordering_of_pic_nums_idc= get_ue_golomb(&s->gb); int pic_id; int i; if(reordering_of_pic_nums_idc==3) break; if(index >= h->ref_count[list]){ av_log(h->s.avctx, AV_LOG_ERROR, "reference count overflow\n"); return -1; } if(reordering_of_pic_nums_idc<3){ if(reordering_of_pic_nums_idc<2){ const int abs_diff_pic_num= get_ue_golomb(&s->gb) + 1; if(abs_diff_pic_num >= h->max_pic_num){ av_log(h->s.avctx, AV_LOG_ERROR, "abs_diff_pic_num overflow\n"); return -1; } if(reordering_of_pic_nums_idc == 0) pred-= abs_diff_pic_num; else pred+= abs_diff_pic_num; pred &= h->max_pic_num - 1; for(i= h->ref_count[list]-1; i>=index; i--){ if(h->ref_list[list][i].pic_id == pred && h->ref_list[list][i].long_ref==0) break; } }else{ pic_id= get_ue_golomb(&s->gb); //long_term_pic_idx for(i= h->ref_count[list]-1; i>=index; i--){ if(h->ref_list[list][i].pic_id == pic_id && h->ref_list[list][i].long_ref==1) break; } } if(i < index){ av_log(h->s.avctx, AV_LOG_ERROR, "reference picture missing during reorder\n"); memset(&h->ref_list[list][index], 0, sizeof(Picture)); //FIXME }else if(i > index){ Picture tmp= h->ref_list[list][i]; for(; i>index; i--){ h->ref_list[list][i]= h->ref_list[list][i-1]; } h->ref_list[list][index]= tmp; } }else{ av_log(h->s.avctx, AV_LOG_ERROR, "illegal reordering_of_pic_nums_idc\n"); return -1; } } } if(h->slice_type!=B_TYPE) break; } if(h->slice_type==B_TYPE && !h->direct_spatial_mv_pred) direct_dist_scale_factor(h); return 0; } static int pred_weight_table(H264Context *h){ MpegEncContext * const s = &h->s; int list, i; int luma_def, chroma_def; h->use_weight= 0; h->use_weight_chroma= 0; h->luma_log2_weight_denom= get_ue_golomb(&s->gb); h->chroma_log2_weight_denom= get_ue_golomb(&s->gb); luma_def = 1<luma_log2_weight_denom; chroma_def = 1<chroma_log2_weight_denom; for(list=0; list<2; list++){ for(i=0; iref_count[list]; i++){ int luma_weight_flag, chroma_weight_flag; luma_weight_flag= get_bits1(&s->gb); if(luma_weight_flag){ h->luma_weight[list][i]= get_se_golomb(&s->gb); h->luma_offset[list][i]= get_se_golomb(&s->gb); if( h->luma_weight[list][i] != luma_def || h->luma_offset[list][i] != 0) h->use_weight= 1; }else{ h->luma_weight[list][i]= luma_def; h->luma_offset[list][i]= 0; } chroma_weight_flag= get_bits1(&s->gb); if(chroma_weight_flag){ int j; for(j=0; j<2; j++){ h->chroma_weight[list][i][j]= get_se_golomb(&s->gb); h->chroma_offset[list][i][j]= get_se_golomb(&s->gb); if( h->chroma_weight[list][i][j] != chroma_def || h->chroma_offset[list][i][j] != 0) h->use_weight_chroma= 1; } }else{ int j; for(j=0; j<2; j++){ h->chroma_weight[list][i][j]= chroma_def; h->chroma_offset[list][i][j]= 0; } } } if(h->slice_type != B_TYPE) break; } h->use_weight= h->use_weight || h->use_weight_chroma; return 0; } static void implicit_weight_table(H264Context *h){ MpegEncContext * const s = &h->s; int ref0, ref1; int cur_poc = s->current_picture_ptr->poc; if( h->ref_count[0] == 1 && h->ref_count[1] == 1 && h->ref_list[0][0].poc + h->ref_list[1][0].poc == 2*cur_poc){ h->use_weight= 0; h->use_weight_chroma= 0; return; } h->use_weight= 2; h->use_weight_chroma= 2; h->luma_log2_weight_denom= 5; h->chroma_log2_weight_denom= 5; /* FIXME: MBAFF */ for(ref0=0; ref0 < h->ref_count[0]; ref0++){ int poc0 = h->ref_list[0][ref0].poc; for(ref1=0; ref1 < h->ref_count[1]; ref1++){ int poc1 = h->ref_list[0][ref1].poc; int td = clip(poc1 - poc0, -128, 127); if(td){ int tb = clip(cur_poc - poc0, -128, 127); int tx = (16384 + (ABS(td) >> 1)) / td; int dist_scale_factor = clip((tb*tx + 32) >> 6, -1024, 1023) >> 2; if(dist_scale_factor < -64 || dist_scale_factor > 128) h->implicit_weight[ref0][ref1] = 32; else h->implicit_weight[ref0][ref1] = 64 - dist_scale_factor; }else h->implicit_weight[ref0][ref1] = 32; } } } /** * instantaneous decoder refresh. */ static void idr(H264Context *h){ int i,j; #define CHECK_DELAY(pic) \ for(j = 0; h->delayed_pic[j]; j++) \ if(pic == h->delayed_pic[j]){ \ pic->reference=1; \ break; \ } for(i=0; ilong_ref_count; i++){ h->long_ref[i]->reference=0; CHECK_DELAY(h->long_ref[i]); h->long_ref[i]= NULL; } h->long_ref_count=0; for(i=0; ishort_ref_count; i++){ h->short_ref[i]->reference=0; CHECK_DELAY(h->short_ref[i]); h->short_ref[i]= NULL; } h->short_ref_count=0; } #undef CHECK_DELAY /** * * @return the removed picture or NULL if an error occures */ static Picture * remove_short(H264Context *h, int frame_num){ MpegEncContext * const s = &h->s; int i; if(s->avctx->debug&FF_DEBUG_MMCO) av_log(h->s.avctx, AV_LOG_DEBUG, "remove short %d count %d\n", frame_num, h->short_ref_count); for(i=0; ishort_ref_count; i++){ Picture *pic= h->short_ref[i]; if(s->avctx->debug&FF_DEBUG_MMCO) av_log(h->s.avctx, AV_LOG_DEBUG, "%d %d %p\n", i, pic->frame_num, pic); if(pic->frame_num == frame_num){ h->short_ref[i]= NULL; memmove(&h->short_ref[i], &h->short_ref[i+1], (h->short_ref_count - i - 1)*sizeof(Picture*)); h->short_ref_count--; return pic; } } return NULL; } /** * * @return the removed picture or NULL if an error occures */ static Picture * remove_long(H264Context *h, int i){ Picture *pic; pic= h->long_ref[i]; h->long_ref[i]= NULL; if(pic) h->long_ref_count--; return pic; } /** * print short term list */ static void print_short_term(H264Context *h) { uint32_t i; if(h->s.avctx->debug&FF_DEBUG_MMCO) { av_log(h->s.avctx, AV_LOG_DEBUG, "short term list:\n"); for(i=0; ishort_ref_count; i++){ Picture *pic= h->short_ref[i]; av_log(h->s.avctx, AV_LOG_DEBUG, "%d fn:%d poc:%d %p\n", i, pic->frame_num, pic->poc, pic->data[0]); } } } /** * print long term list */ static void print_long_term(H264Context *h) { uint32_t i; if(h->s.avctx->debug&FF_DEBUG_MMCO) { av_log(h->s.avctx, AV_LOG_DEBUG, "long term list:\n"); for(i = 0; i < 16; i++){ Picture *pic= h->long_ref[i]; if (pic) { av_log(h->s.avctx, AV_LOG_DEBUG, "%d fn:%d poc:%d %p\n", i, pic->frame_num, pic->poc, pic->data[0]); } } } } /** * Executes the reference picture marking (memory management control operations). */ static int execute_ref_pic_marking(H264Context *h, MMCO *mmco, int mmco_count){ MpegEncContext * const s = &h->s; int i, j; int current_is_long=0; Picture *pic; if((s->avctx->debug&FF_DEBUG_MMCO) && mmco_count==0) av_log(h->s.avctx, AV_LOG_DEBUG, "no mmco here\n"); for(i=0; iavctx->debug&FF_DEBUG_MMCO) av_log(h->s.avctx, AV_LOG_DEBUG, "mmco:%d %d %d\n", h->mmco[i].opcode, h->mmco[i].short_frame_num, h->mmco[i].long_index); switch(mmco[i].opcode){ case MMCO_SHORT2UNUSED: pic= remove_short(h, mmco[i].short_frame_num); if(pic==NULL) return -1; pic->reference= 0; break; case MMCO_SHORT2LONG: pic= remove_long(h, mmco[i].long_index); if(pic) pic->reference=0; h->long_ref[ mmco[i].long_index ]= remove_short(h, mmco[i].short_frame_num); h->long_ref[ mmco[i].long_index ]->long_ref=1; break; case MMCO_LONG2UNUSED: pic= remove_long(h, mmco[i].long_index); if(pic==NULL) return -1; pic->reference= 0; break; case MMCO_LONG: pic= remove_long(h, mmco[i].long_index); if(pic) pic->reference=0; h->long_ref[ mmco[i].long_index ]= s->current_picture_ptr; h->long_ref[ mmco[i].long_index ]->long_ref=1; h->long_ref_count++; current_is_long=1; break; case MMCO_SET_MAX_LONG: assert(mmco[i].long_index <= 16); // just remove the long term which index is greater than new max for(j = mmco[i].long_index; j<16; j++){ pic = remove_long(h, j); if (pic) pic->reference=0; } break; case MMCO_RESET: while(h->short_ref_count){ pic= remove_short(h, h->short_ref[0]->frame_num); pic->reference=0; } for(j = 0; j < 16; j++) { pic= remove_long(h, j); if(pic) pic->reference=0; } break; default: assert(0); } } if(!current_is_long){ pic= remove_short(h, s->current_picture_ptr->frame_num); if(pic){ pic->reference=0; av_log(h->s.avctx, AV_LOG_ERROR, "illegal short term buffer state detected\n"); } if(h->short_ref_count) memmove(&h->short_ref[1], &h->short_ref[0], h->short_ref_count*sizeof(Picture*)); h->short_ref[0]= s->current_picture_ptr; h->short_ref[0]->long_ref=0; h->short_ref_count++; } print_short_term(h); print_long_term(h); return 0; } static int decode_ref_pic_marking(H264Context *h){ MpegEncContext * const s = &h->s; int i; if(h->nal_unit_type == NAL_IDR_SLICE){ //FIXME fields s->broken_link= get_bits1(&s->gb) -1; h->mmco[0].long_index= get_bits1(&s->gb) - 1; // current_long_term_idx if(h->mmco[0].long_index == -1) h->mmco_index= 0; else{ h->mmco[0].opcode= MMCO_LONG; h->mmco_index= 1; } }else{ if(get_bits1(&s->gb)){ // adaptive_ref_pic_marking_mode_flag for(i= 0; igb);; h->mmco[i].opcode= opcode; if(opcode==MMCO_SHORT2UNUSED || opcode==MMCO_SHORT2LONG){ h->mmco[i].short_frame_num= (h->frame_num - get_ue_golomb(&s->gb) - 1) & ((1<sps.log2_max_frame_num)-1); //FIXME fields /* if(h->mmco[i].short_frame_num >= h->short_ref_count || h->short_ref[ h->mmco[i].short_frame_num ] == NULL){ fprintf(stderr, "illegal short ref in memory management control operation %d\n", mmco); return -1; }*/ } if(opcode==MMCO_SHORT2LONG || opcode==MMCO_LONG2UNUSED || opcode==MMCO_LONG || opcode==MMCO_SET_MAX_LONG){ h->mmco[i].long_index= get_ue_golomb(&s->gb); if(/*h->mmco[i].long_index >= h->long_ref_count || h->long_ref[ h->mmco[i].long_index ] == NULL*/ h->mmco[i].long_index >= 16){ av_log(h->s.avctx, AV_LOG_ERROR, "illegal long ref in memory management control operation %d\n", opcode); return -1; } } if(opcode > MMCO_LONG){ av_log(h->s.avctx, AV_LOG_ERROR, "illegal memory management control operation %d\n", opcode); return -1; } if(opcode == MMCO_END) break; } h->mmco_index= i; }else{ assert(h->long_ref_count + h->short_ref_count <= h->sps.ref_frame_count); if(h->long_ref_count + h->short_ref_count == h->sps.ref_frame_count){ //FIXME fields h->mmco[0].opcode= MMCO_SHORT2UNUSED; h->mmco[0].short_frame_num= h->short_ref[ h->short_ref_count - 1 ]->frame_num; h->mmco_index= 1; }else h->mmco_index= 0; } } return 0; } static int init_poc(H264Context *h){ MpegEncContext * const s = &h->s; const int max_frame_num= 1<sps.log2_max_frame_num; int field_poc[2]; if(h->nal_unit_type == NAL_IDR_SLICE){ h->frame_num_offset= 0; }else{ if(h->frame_num < h->prev_frame_num) h->frame_num_offset= h->prev_frame_num_offset + max_frame_num; else h->frame_num_offset= h->prev_frame_num_offset; } if(h->sps.poc_type==0){ const int max_poc_lsb= 1<sps.log2_max_poc_lsb; if (h->poc_lsb < h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb >= max_poc_lsb/2) h->poc_msb = h->prev_poc_msb + max_poc_lsb; else if(h->poc_lsb > h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb < -max_poc_lsb/2) h->poc_msb = h->prev_poc_msb - max_poc_lsb; else h->poc_msb = h->prev_poc_msb; //printf("poc: %d %d\n", h->poc_msb, h->poc_lsb); field_poc[0] = field_poc[1] = h->poc_msb + h->poc_lsb; if(s->picture_structure == PICT_FRAME) field_poc[1] += h->delta_poc_bottom; }else if(h->sps.poc_type==1){ int abs_frame_num, expected_delta_per_poc_cycle, expectedpoc; int i; if(h->sps.poc_cycle_length != 0) abs_frame_num = h->frame_num_offset + h->frame_num; else abs_frame_num = 0; if(h->nal_ref_idc==0 && abs_frame_num > 0) abs_frame_num--; expected_delta_per_poc_cycle = 0; for(i=0; i < h->sps.poc_cycle_length; i++) expected_delta_per_poc_cycle += h->sps.offset_for_ref_frame[ i ]; //FIXME integrate during sps parse if(abs_frame_num > 0){ int poc_cycle_cnt = (abs_frame_num - 1) / h->sps.poc_cycle_length; int frame_num_in_poc_cycle = (abs_frame_num - 1) % h->sps.poc_cycle_length; expectedpoc = poc_cycle_cnt * expected_delta_per_poc_cycle; for(i = 0; i <= frame_num_in_poc_cycle; i++) expectedpoc = expectedpoc + h->sps.offset_for_ref_frame[ i ]; } else expectedpoc = 0; if(h->nal_ref_idc == 0) expectedpoc = expectedpoc + h->sps.offset_for_non_ref_pic; field_poc[0] = expectedpoc + h->delta_poc[0]; field_poc[1] = field_poc[0] + h->sps.offset_for_top_to_bottom_field; if(s->picture_structure == PICT_FRAME) field_poc[1] += h->delta_poc[1]; }else{ int poc; if(h->nal_unit_type == NAL_IDR_SLICE){ poc= 0; }else{ if(h->nal_ref_idc) poc= 2*(h->frame_num_offset + h->frame_num); else poc= 2*(h->frame_num_offset + h->frame_num) - 1; } field_poc[0]= poc; field_poc[1]= poc; } if(s->picture_structure != PICT_BOTTOM_FIELD) s->current_picture_ptr->field_poc[0]= field_poc[0]; if(s->picture_structure != PICT_TOP_FIELD) s->current_picture_ptr->field_poc[1]= field_poc[1]; if(s->picture_structure == PICT_FRAME) // FIXME field pix? s->current_picture_ptr->poc= FFMIN(field_poc[0], field_poc[1]); return 0; } /** * decodes a slice header. * this will allso call MPV_common_init() and frame_start() as needed */ static int decode_slice_header(H264Context *h){ MpegEncContext * const s = &h->s; int first_mb_in_slice, pps_id; int num_ref_idx_active_override_flag; static const uint8_t slice_type_map[5]= {P_TYPE, B_TYPE, I_TYPE, SP_TYPE, SI_TYPE}; s->current_picture.reference= h->nal_ref_idc != 0; first_mb_in_slice= get_ue_golomb(&s->gb); h->slice_type= get_ue_golomb(&s->gb); if(h->slice_type > 9){ av_log(h->s.avctx, AV_LOG_ERROR, "slice type too large (%d) at %d %d\n", h->slice_type, s->mb_x, s->mb_y); return -1; } if(h->slice_type > 4){ h->slice_type -= 5; h->slice_type_fixed=1; }else h->slice_type_fixed=0; h->slice_type= slice_type_map[ h->slice_type ]; s->pict_type= h->slice_type; // to make a few old func happy, its wrong though pps_id= get_ue_golomb(&s->gb); if(pps_id>255){ av_log(h->s.avctx, AV_LOG_ERROR, "pps_id out of range\n"); return -1; } h->pps= h->pps_buffer[pps_id]; if(h->pps.slice_group_count == 0){ av_log(h->s.avctx, AV_LOG_ERROR, "non existing PPS referenced\n"); return -1; } h->sps= h->sps_buffer[ h->pps.sps_id ]; if(h->sps.log2_max_frame_num == 0){ av_log(h->s.avctx, AV_LOG_ERROR, "non existing SPS referenced\n"); return -1; } s->mb_width= h->sps.mb_width; s->mb_height= h->sps.mb_height; h->b_stride= s->mb_width*4 + 1; h->b8_stride= s->mb_width*2 + 1; s->resync_mb_x = s->mb_x = first_mb_in_slice % s->mb_width; s->resync_mb_y = s->mb_y = first_mb_in_slice / s->mb_width; //FIXME AFFW s->width = 16*s->mb_width - 2*(h->sps.crop_left + h->sps.crop_right ); if(h->sps.frame_mbs_only_flag) s->height= 16*s->mb_height - 2*(h->sps.crop_top + h->sps.crop_bottom); else s->height= 16*s->mb_height - 4*(h->sps.crop_top + h->sps.crop_bottom); //FIXME recheck if (s->context_initialized && ( s->width != s->avctx->width || s->height != s->avctx->height)) { free_tables(h); MPV_common_end(s); } if (!s->context_initialized) { if (MPV_common_init(s) < 0) return -1; alloc_tables(h); s->avctx->width = s->width; s->avctx->height = s->height; s->avctx->sample_aspect_ratio= h->sps.sar; if(!s->avctx->sample_aspect_ratio.den) s->avctx->sample_aspect_ratio.den = 1; if(h->sps.timing_info_present_flag && h->sps.fixed_frame_rate_flag){ s->avctx->frame_rate = h->sps.time_scale; s->avctx->frame_rate_base = h->sps.num_units_in_tick; } } if(h->slice_num == 0){ frame_start(h); } s->current_picture_ptr->frame_num= //FIXME frame_num cleanup h->frame_num= get_bits(&s->gb, h->sps.log2_max_frame_num); if(h->sps.frame_mbs_only_flag){ s->picture_structure= PICT_FRAME; }else{ if(get_bits1(&s->gb)) //field_pic_flag s->picture_structure= PICT_TOP_FIELD + get_bits1(&s->gb); //bottom_field_flag else s->picture_structure= PICT_FRAME; } if(s->picture_structure==PICT_FRAME){ h->curr_pic_num= h->frame_num; h->max_pic_num= 1<< h->sps.log2_max_frame_num; }else{ h->curr_pic_num= 2*h->frame_num; h->max_pic_num= 1<<(h->sps.log2_max_frame_num + 1); } if(h->nal_unit_type == NAL_IDR_SLICE){ get_ue_golomb(&s->gb); /* idr_pic_id */ } if(h->sps.poc_type==0){ h->poc_lsb= get_bits(&s->gb, h->sps.log2_max_poc_lsb); if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME){ h->delta_poc_bottom= get_se_golomb(&s->gb); } } if(h->sps.poc_type==1 && !h->sps.delta_pic_order_always_zero_flag){ h->delta_poc[0]= get_se_golomb(&s->gb); if(h->pps.pic_order_present==1 && s->picture_structure==PICT_FRAME) h->delta_poc[1]= get_se_golomb(&s->gb); } init_poc(h); if(h->pps.redundant_pic_cnt_present){ h->redundant_pic_count= get_ue_golomb(&s->gb); } //set defaults, might be overriden a few line later h->ref_count[0]= h->pps.ref_count[0]; h->ref_count[1]= h->pps.ref_count[1]; if(h->slice_type == P_TYPE || h->slice_type == SP_TYPE || h->slice_type == B_TYPE){ if(h->slice_type == B_TYPE){ h->direct_spatial_mv_pred= get_bits1(&s->gb); } num_ref_idx_active_override_flag= get_bits1(&s->gb); if(num_ref_idx_active_override_flag){ h->ref_count[0]= get_ue_golomb(&s->gb) + 1; if(h->slice_type==B_TYPE) h->ref_count[1]= get_ue_golomb(&s->gb) + 1; if(h->ref_count[0] > 32 || h->ref_count[1] > 32){ av_log(h->s.avctx, AV_LOG_ERROR, "reference overflow\n"); return -1; } } } if(h->slice_num == 0){ fill_default_ref_list(h); } decode_ref_pic_list_reordering(h); if( (h->pps.weighted_pred && (h->slice_type == P_TYPE || h->slice_type == SP_TYPE )) || (h->pps.weighted_bipred_idc==1 && h->slice_type==B_TYPE ) ) pred_weight_table(h); else if(h->pps.weighted_bipred_idc==2 && h->slice_type==B_TYPE) implicit_weight_table(h); else h->use_weight = 0; if(s->current_picture.reference) decode_ref_pic_marking(h); if( h->slice_type != I_TYPE && h->slice_type != SI_TYPE && h->pps.cabac ) h->cabac_init_idc = get_ue_golomb(&s->gb); h->last_qscale_diff = 0; s->qscale = h->pps.init_qp + get_se_golomb(&s->gb); if(s->qscale<0 || s->qscale>51){ av_log(s->avctx, AV_LOG_ERROR, "QP %d out of range\n", s->qscale); return -1; } h->chroma_qp = get_chroma_qp(h, s->qscale); //FIXME qscale / qp ... stuff if(h->slice_type == SP_TYPE){ get_bits1(&s->gb); /* sp_for_switch_flag */ } if(h->slice_type==SP_TYPE || h->slice_type == SI_TYPE){ get_se_golomb(&s->gb); /* slice_qs_delta */ } h->deblocking_filter = 1; h->slice_alpha_c0_offset = 0; h->slice_beta_offset = 0; if( h->pps.deblocking_filter_parameters_present ) { h->deblocking_filter= get_ue_golomb(&s->gb); if(h->deblocking_filter < 2) h->deblocking_filter^= 1; // 1<->0 if( h->deblocking_filter ) { h->slice_alpha_c0_offset = get_se_golomb(&s->gb) << 1; h->slice_beta_offset = get_se_golomb(&s->gb) << 1; } } #if 0 //FMO if( h->pps.num_slice_groups > 1 && h->pps.mb_slice_group_map_type >= 3 && h->pps.mb_slice_group_map_type <= 5) slice_group_change_cycle= get_bits(&s->gb, ?); #endif h->slice_num++; if(s->avctx->debug&FF_DEBUG_PICT_INFO){ av_log(h->s.avctx, AV_LOG_DEBUG, "slice:%d mb:%d %c pps:%d frame:%d poc:%d/%d ref:%d/%d qp:%d loop:%d weight:%d%s\n", h->slice_num, first_mb_in_slice, av_get_pict_type_char(h->slice_type), pps_id, h->frame_num, s->current_picture_ptr->field_poc[0], s->current_picture_ptr->field_poc[1], h->ref_count[0], h->ref_count[1], s->qscale, h->deblocking_filter, h->use_weight, h->use_weight==1 && h->use_weight_chroma ? "c" : "" ); } return 0; } /** * */ static inline int get_level_prefix(GetBitContext *gb){ unsigned int buf; int log; OPEN_READER(re, gb); UPDATE_CACHE(re, gb); buf=GET_CACHE(re, gb); log= 32 - av_log2(buf); #ifdef TRACE print_bin(buf>>(32-log), log); av_log(NULL, AV_LOG_DEBUG, "%5d %2d %3d lpr @%5d in %s get_level_prefix\n", buf>>(32-log), log, log-1, get_bits_count(gb), __FILE__); #endif LAST_SKIP_BITS(re, gb, log); CLOSE_READER(re, gb); return log-1; } /** * decodes a residual block. * @param n block index * @param scantable scantable * @param max_coeff number of coefficients in the block * @return <0 if an error occured */ static int decode_residual(H264Context *h, GetBitContext *gb, DCTELEM *block, int n, const uint8_t *scantable, int qp, int max_coeff){ MpegEncContext * const s = &h->s; const uint16_t *qmul= dequant_coeff[qp]; static const int coeff_token_table_index[17]= {0, 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3}; int level[16], run[16]; int suffix_length, zeros_left, coeff_num, coeff_token, total_coeff, i, trailing_ones; //FIXME put trailing_onex into the context if(n == CHROMA_DC_BLOCK_INDEX){ coeff_token= get_vlc2(gb, chroma_dc_coeff_token_vlc.table, CHROMA_DC_COEFF_TOKEN_VLC_BITS, 1); total_coeff= coeff_token>>2; }else{ if(n == LUMA_DC_BLOCK_INDEX){ total_coeff= pred_non_zero_count(h, 0); coeff_token= get_vlc2(gb, coeff_token_vlc[ coeff_token_table_index[total_coeff] ].table, COEFF_TOKEN_VLC_BITS, 2); total_coeff= coeff_token>>2; }else{ total_coeff= pred_non_zero_count(h, n); coeff_token= get_vlc2(gb, coeff_token_vlc[ coeff_token_table_index[total_coeff] ].table, COEFF_TOKEN_VLC_BITS, 2); total_coeff= coeff_token>>2; h->non_zero_count_cache[ scan8[n] ]= total_coeff; } } //FIXME set last_non_zero? if(total_coeff==0) return 0; trailing_ones= coeff_token&3; tprintf("trailing:%d, total:%d\n", trailing_ones, total_coeff); assert(total_coeff<=16); for(i=0; i 10 && trailing_ones < 3; for(; is.avctx, AV_LOG_ERROR, "prefix too large at %d %d\n", s->mb_x, s->mb_y); return -1; } if(i==trailing_ones && i<3) level_code+= 2; //FIXME split first iteration mask= -(level_code&1); level[i]= (((2+level_code)>>1) ^ mask) - mask; if(suffix_length==0) suffix_length=1; //FIXME split first iteration #if 1 if(ABS(level[i]) > (3<<(suffix_length-1)) && suffix_length<6) suffix_length++; #else if((2+level_code)>>1) > (3<<(suffix_length-1)) && suffix_length<6) suffix_length++; /* ? == prefix > 2 or sth */ #endif tprintf("level: %d suffix_length:%d\n", level[i], suffix_length); } if(total_coeff == max_coeff) zeros_left=0; else{ if(n == CHROMA_DC_BLOCK_INDEX) zeros_left= get_vlc2(gb, chroma_dc_total_zeros_vlc[ total_coeff-1 ].table, CHROMA_DC_TOTAL_ZEROS_VLC_BITS, 1); else zeros_left= get_vlc2(gb, total_zeros_vlc[ total_coeff-1 ].table, TOTAL_ZEROS_VLC_BITS, 1); } for(i=0; is.avctx, AV_LOG_ERROR, "negative number of zero coeffs at %d %d\n", s->mb_x, s->mb_y); return -1; } for(; i 24){ for(i=total_coeff-1; i>=0; i--){ //FIXME merge into rundecode? int j; coeff_num += run[i] + 1; //FIXME add 1 earlier ? j= scantable[ coeff_num ]; block[j]= level[i]; } }else{ for(i=total_coeff-1; i>=0; i--){ //FIXME merge into rundecode? int j; coeff_num += run[i] + 1; //FIXME add 1 earlier ? j= scantable[ coeff_num ]; block[j]= level[i] * qmul[j]; // printf("%d %d ", block[j], qmul[j]); } } return 0; } /** * decodes a P_SKIP or B_SKIP macroblock */ static void decode_mb_skip(H264Context *h){ MpegEncContext * const s = &h->s; const int mb_xy= s->mb_x + s->mb_y*s->mb_stride; int mb_type; memset(h->non_zero_count[mb_xy], 0, 16); memset(h->non_zero_count_cache + 8, 0, 8*5); //FIXME ugly, remove pfui if( h->slice_type == B_TYPE ) { // just for fill_caches. pred_direct_motion will set the real mb_type mb_type= MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P0L1|MB_TYPE_DIRECT2|MB_TYPE_SKIP; //FIXME mbaff fill_caches(h, mb_type, 0); //FIXME check what is needed and what not ... pred_direct_motion(h, &mb_type); if(h->pps.cabac){ fill_rectangle(h->mvd_cache[0][scan8[0]], 4, 4, 8, 0, 4); fill_rectangle(h->mvd_cache[1][scan8[0]], 4, 4, 8, 0, 4); } } else { int mx, my; mb_type= MB_TYPE_16x16|MB_TYPE_P0L0|MB_TYPE_P1L0|MB_TYPE_SKIP; if(h->sps.mb_aff && s->mb_skip_run==0 && (s->mb_y&1)==0){ h->mb_field_decoding_flag= get_bits1(&s->gb); } if(h->mb_field_decoding_flag) mb_type|= MB_TYPE_INTERLACED; fill_caches(h, mb_type, 0); //FIXME check what is needed and what not ... pred_pskip_motion(h, &mx, &my); fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, 0, 1); fill_rectangle( h->mv_cache[0][scan8[0]], 4, 4, 8, pack16to32(mx,my), 4); if(h->pps.cabac) fill_rectangle(h->mvd_cache[0][scan8[0]], 4, 4, 8, 0, 4); } write_back_motion(h, mb_type); s->current_picture.mb_type[mb_xy]= mb_type|MB_TYPE_SKIP; s->current_picture.qscale_table[mb_xy]= s->qscale; h->slice_table[ mb_xy ]= h->slice_num; h->prev_mb_skiped= 1; } /** * decodes a macroblock * @returns 0 if ok, AC_ERROR / DC_ERROR / MV_ERROR if an error is noticed */ static int decode_mb_cavlc(H264Context *h){ MpegEncContext * const s = &h->s; const int mb_xy= s->mb_x + s->mb_y*s->mb_stride; int mb_type, partition_count, cbp; s->dsp.clear_blocks(h->mb); //FIXME avoid if allready clear (move after skip handlong? tprintf("pic:%d mb:%d/%d\n", h->frame_num, s->mb_x, s->mb_y); cbp = 0; /* avoid warning. FIXME: find a solution without slowing down the code */ if(h->slice_type != I_TYPE && h->slice_type != SI_TYPE){ if(s->mb_skip_run==-1) s->mb_skip_run= get_ue_golomb(&s->gb); if (s->mb_skip_run--) { decode_mb_skip(h); return 0; } } if(h->sps.mb_aff /* && !field pic FIXME needed? */){ if((s->mb_y&1)==0) h->mb_field_decoding_flag = get_bits1(&s->gb); }else h->mb_field_decoding_flag=0; //FIXME som ed note ?! h->prev_mb_skiped= 0; mb_type= get_ue_golomb(&s->gb); if(h->slice_type == B_TYPE){ if(mb_type < 23){ partition_count= b_mb_type_info[mb_type].partition_count; mb_type= b_mb_type_info[mb_type].type; }else{ mb_type -= 23; goto decode_intra_mb; } }else if(h->slice_type == P_TYPE /*|| h->slice_type == SP_TYPE */){ if(mb_type < 5){ partition_count= p_mb_type_info[mb_type].partition_count; mb_type= p_mb_type_info[mb_type].type; }else{ mb_type -= 5; goto decode_intra_mb; } }else{ assert(h->slice_type == I_TYPE); decode_intra_mb: if(mb_type > 25){ av_log(h->s.avctx, AV_LOG_ERROR, "mb_type %d in %c slice to large at %d %d\n", mb_type, av_get_pict_type_char(h->slice_type), s->mb_x, s->mb_y); return -1; } partition_count=0; cbp= i_mb_type_info[mb_type].cbp; h->intra16x16_pred_mode= i_mb_type_info[mb_type].pred_mode; mb_type= i_mb_type_info[mb_type].type; } if(h->mb_field_decoding_flag) mb_type |= MB_TYPE_INTERLACED; s->current_picture.mb_type[mb_xy]= mb_type; h->slice_table[ mb_xy ]= h->slice_num; if(IS_INTRA_PCM(mb_type)){ const uint8_t *ptr; int x, y; // we assume these blocks are very rare so we dont optimize it align_get_bits(&s->gb); ptr= s->gb.buffer + get_bits_count(&s->gb); for(y=0; y<16; y++){ const int index= 4*(y&3) + 64*(y>>2); for(x=0; x<16; x++){ h->mb[index + (x&3) + 16*(x>>2)]= *(ptr++); } } for(y=0; y<8; y++){ const int index= 256 + 4*(y&3) + 32*(y>>2); for(x=0; x<8; x++){ h->mb[index + (x&3) + 16*(x>>2)]= *(ptr++); } } for(y=0; y<8; y++){ const int index= 256 + 64 + 4*(y&3) + 32*(y>>2); for(x=0; x<8; x++){ h->mb[index + (x&3) + 16*(x>>2)]= *(ptr++); } } skip_bits(&s->gb, 384); //FIXME check /fix the bitstream readers //FIXME deblock filter, non_zero_count_cache init ... memset(h->non_zero_count[mb_xy], 16, 16); s->current_picture.qscale_table[mb_xy]= s->qscale; return 0; } fill_caches(h, mb_type, 0); //mb_pred if(IS_INTRA(mb_type)){ // init_top_left_availability(h); if(IS_INTRA4x4(mb_type)){ int i; // fill_intra4x4_pred_table(h); for(i=0; i<16; i++){ const int mode_coded= !get_bits1(&s->gb); const int predicted_mode= pred_intra_mode(h, i); int mode; if(mode_coded){ const int rem_mode= get_bits(&s->gb, 3); if(rem_modeintra4x4_pred_mode_cache[ scan8[i] ] = mode; } write_back_intra_pred_mode(h); if( check_intra4x4_pred_mode(h) < 0) return -1; }else{ h->intra16x16_pred_mode= check_intra_pred_mode(h, h->intra16x16_pred_mode); if(h->intra16x16_pred_mode < 0) return -1; } h->chroma_pred_mode= get_ue_golomb(&s->gb); h->chroma_pred_mode= check_intra_pred_mode(h, h->chroma_pred_mode); if(h->chroma_pred_mode < 0) return -1; }else if(partition_count==4){ int i, j, sub_partition_count[4], list, ref[2][4]; if(h->slice_type == B_TYPE){ for(i=0; i<4; i++){ h->sub_mb_type[i]= get_ue_golomb(&s->gb); if(h->sub_mb_type[i] >=13){ av_log(h->s.avctx, AV_LOG_ERROR, "B sub_mb_type %d out of range at %d %d\n", h->sub_mb_type[i], s->mb_x, s->mb_y); return -1; } sub_partition_count[i]= b_sub_mb_type_info[ h->sub_mb_type[i] ].partition_count; h->sub_mb_type[i]= b_sub_mb_type_info[ h->sub_mb_type[i] ].type; } if( IS_DIRECT(h->sub_mb_type[0]) || IS_DIRECT(h->sub_mb_type[1]) || IS_DIRECT(h->sub_mb_type[2]) || IS_DIRECT(h->sub_mb_type[3])) pred_direct_motion(h, &mb_type); }else{ assert(h->slice_type == P_TYPE || h->slice_type == SP_TYPE); //FIXME SP correct ? for(i=0; i<4; i++){ h->sub_mb_type[i]= get_ue_golomb(&s->gb); if(h->sub_mb_type[i] >=4){ av_log(h->s.avctx, AV_LOG_ERROR, "P sub_mb_type %d out of range at %d %d\n", h->sub_mb_type[i], s->mb_x, s->mb_y); return -1; } sub_partition_count[i]= p_sub_mb_type_info[ h->sub_mb_type[i] ].partition_count; h->sub_mb_type[i]= p_sub_mb_type_info[ h->sub_mb_type[i] ].type; } } for(list=0; list<2; list++){ const int ref_count= IS_REF0(mb_type) ? 1 : h->ref_count[list]; if(ref_count == 0) continue; for(i=0; i<4; i++){ if(IS_DIRECT(h->sub_mb_type[i])) continue; if(IS_DIR(h->sub_mb_type[i], 0, list)){ ref[list][i] = get_te0_golomb(&s->gb, ref_count); //FIXME init to 0 before and skip? }else{ //FIXME ref[list][i] = -1; } } } for(list=0; list<2; list++){ const int ref_count= IS_REF0(mb_type) ? 1 : h->ref_count[list]; if(ref_count == 0) continue; for(i=0; i<4; i++){ if(IS_DIRECT(h->sub_mb_type[i])) continue; h->ref_cache[list][ scan8[4*i] ]=h->ref_cache[list][ scan8[4*i]+1 ]= h->ref_cache[list][ scan8[4*i]+8 ]=h->ref_cache[list][ scan8[4*i]+9 ]= ref[list][i]; if(IS_DIR(h->sub_mb_type[i], 0, list)){ const int sub_mb_type= h->sub_mb_type[i]; const int block_width= (sub_mb_type & (MB_TYPE_16x16|MB_TYPE_16x8)) ? 2 : 1; for(j=0; jmv_cache[list][ scan8[index] ]; pred_motion(h, index, block_width, list, h->ref_cache[list][ scan8[index] ], &mx, &my); mx += get_se_golomb(&s->gb); my += get_se_golomb(&s->gb); tprintf("final mv:%d %d\n", mx, my); if(IS_SUB_8X8(sub_mb_type)){ mv_cache[ 0 ][0]= mv_cache[ 1 ][0]= mv_cache[ 8 ][0]= mv_cache[ 9 ][0]= mx; mv_cache[ 0 ][1]= mv_cache[ 1 ][1]= mv_cache[ 8 ][1]= mv_cache[ 9 ][1]= my; }else if(IS_SUB_8X4(sub_mb_type)){ mv_cache[ 0 ][0]= mv_cache[ 1 ][0]= mx; mv_cache[ 0 ][1]= mv_cache[ 1 ][1]= my; }else if(IS_SUB_4X8(sub_mb_type)){ mv_cache[ 0 ][0]= mv_cache[ 8 ][0]= mx; mv_cache[ 0 ][1]= mv_cache[ 8 ][1]= my; }else{ assert(IS_SUB_4X4(sub_mb_type)); mv_cache[ 0 ][0]= mx; mv_cache[ 0 ][1]= my; } } }else{ uint32_t *p= (uint32_t *)&h->mv_cache[list][ scan8[4*i] ][0]; p[0] = p[1]= p[8] = p[9]= 0; } } } }else if(IS_DIRECT(mb_type)){ pred_direct_motion(h, &mb_type); s->current_picture.mb_type[mb_xy]= mb_type; }else{ int list, mx, my, i; //FIXME we should set ref_idx_l? to 0 if we use that later ... if(IS_16X16(mb_type)){ for(list=0; list<2; list++){ if(h->ref_count[list]>0){ if(IS_DIR(mb_type, 0, list)){ const int val= get_te0_golomb(&s->gb, h->ref_count[list]); fill_rectangle(&h->ref_cache[list][ scan8[0] ], 4, 4, 8, val, 1); } } } for(list=0; list<2; list++){ if(IS_DIR(mb_type, 0, list)){ pred_motion(h, 0, 4, list, h->ref_cache[list][ scan8[0] ], &mx, &my); mx += get_se_golomb(&s->gb); my += get_se_golomb(&s->gb); tprintf("final mv:%d %d\n", mx, my); fill_rectangle(h->mv_cache[list][ scan8[0] ], 4, 4, 8, pack16to32(mx,my), 4); } } } else if(IS_16X8(mb_type)){ for(list=0; list<2; list++){ if(h->ref_count[list]>0){ for(i=0; i<2; i++){ if(IS_DIR(mb_type, i, list)){ const int val= get_te0_golomb(&s->gb, h->ref_count[list]); fill_rectangle(&h->ref_cache[list][ scan8[0] + 16*i ], 4, 2, 8, val, 1); }else // needed only for mixed refs (e.g. B_L0_L1_16x8) fill_rectangle(&h->ref_cache[list][ scan8[0] + 16*i ], 4, 2, 8, (LIST_NOT_USED&0xFF), 1); } } } for(list=0; list<2; list++){ for(i=0; i<2; i++){ if(IS_DIR(mb_type, i, list)){ pred_16x8_motion(h, 8*i, list, h->ref_cache[list][scan8[0] + 16*i], &mx, &my); mx += get_se_golomb(&s->gb); my += get_se_golomb(&s->gb); tprintf("final mv:%d %d\n", mx, my); fill_rectangle(h->mv_cache[list][ scan8[0] + 16*i ], 4, 2, 8, pack16to32(mx,my), 4); }else fill_rectangle(h->mv_cache[list][ scan8[0] + 16*i ], 4, 2, 8, 0, 4); } } }else{ assert(IS_8X16(mb_type)); for(list=0; list<2; list++){ if(h->ref_count[list]>0){ for(i=0; i<2; i++){ if(IS_DIR(mb_type, i, list)){ //FIXME optimize const int val= get_te0_golomb(&s->gb, h->ref_count[list]); fill_rectangle(&h->ref_cache[list][ scan8[0] + 2*i ], 2, 4, 8, val, 1); }else // needed only for mixed refs fill_rectangle(&h->ref_cache[list][ scan8[0] + 2*i ], 2, 4, 8, (LIST_NOT_USED&0xFF), 1); } } } for(list=0; list<2; list++){ for(i=0; i<2; i++){ if(IS_DIR(mb_type, i, list)){ pred_8x16_motion(h, i*4, list, h->ref_cache[list][ scan8[0] + 2*i ], &mx, &my); mx += get_se_golomb(&s->gb); my += get_se_golomb(&s->gb); tprintf("final mv:%d %d\n", mx, my); fill_rectangle(h->mv_cache[list][ scan8[0] + 2*i ], 2, 4, 8, pack16to32(mx,my), 4); }else fill_rectangle(h->mv_cache[list][ scan8[0] + 2*i ], 2, 4, 8, 0, 4); } } } } if(IS_INTER(mb_type)) write_back_motion(h, mb_type); if(!IS_INTRA16x16(mb_type)){ cbp= get_ue_golomb(&s->gb); if(cbp > 47){ av_log(h->s.avctx, AV_LOG_ERROR, "cbp too large (%d) at %d %d\n", cbp, s->mb_x, s->mb_y); return -1; } if(IS_INTRA4x4(mb_type)) cbp= golomb_to_intra4x4_cbp[cbp]; else cbp= golomb_to_inter_cbp[cbp]; } if(cbp || IS_INTRA16x16(mb_type)){ int i8x8, i4x4, chroma_idx; int chroma_qp, dquant; GetBitContext *gb= IS_INTRA(mb_type) ? h->intra_gb_ptr : h->inter_gb_ptr; const uint8_t *scan, *dc_scan; // fill_non_zero_count_cache(h); if(IS_INTERLACED(mb_type)){ scan= field_scan; dc_scan= luma_dc_field_scan; }else{ scan= zigzag_scan; dc_scan= luma_dc_zigzag_scan; } dquant= get_se_golomb(&s->gb); if( dquant > 25 || dquant < -26 ){ av_log(h->s.avctx, AV_LOG_ERROR, "dquant out of range (%d) at %d %d\n", dquant, s->mb_x, s->mb_y); return -1; } s->qscale += dquant; if(((unsigned)s->qscale) > 51){ if(s->qscale<0) s->qscale+= 52; else s->qscale-= 52; } h->chroma_qp= chroma_qp= get_chroma_qp(h, s->qscale); if(IS_INTRA16x16(mb_type)){ if( decode_residual(h, h->intra_gb_ptr, h->mb, LUMA_DC_BLOCK_INDEX, dc_scan, s->qscale, 16) < 0){ return -1; //FIXME continue if partotioned and other retirn -1 too } assert((cbp&15) == 0 || (cbp&15) == 15); if(cbp&15){ for(i8x8=0; i8x8<4; i8x8++){ for(i4x4=0; i4x4<4; i4x4++){ const int index= i4x4 + 4*i8x8; if( decode_residual(h, h->intra_gb_ptr, h->mb + 16*index, index, scan + 1, s->qscale, 15) < 0 ){ return -1; } } } }else{ fill_rectangle(&h->non_zero_count_cache[scan8[0]], 4, 4, 8, 0, 1); } }else{ for(i8x8=0; i8x8<4; i8x8++){ if(cbp & (1<mb + 16*index, index, scan, s->qscale, 16) <0 ){ return -1; } } }else{ uint8_t * const nnz= &h->non_zero_count_cache[ scan8[4*i8x8] ]; nnz[0] = nnz[1] = nnz[8] = nnz[9] = 0; } } } if(cbp&0x30){ for(chroma_idx=0; chroma_idx<2; chroma_idx++) if( decode_residual(h, gb, h->mb + 256 + 16*4*chroma_idx, CHROMA_DC_BLOCK_INDEX, chroma_dc_scan, chroma_qp, 4) < 0){ return -1; } } if(cbp&0x20){ for(chroma_idx=0; chroma_idx<2; chroma_idx++){ for(i4x4=0; i4x4<4; i4x4++){ const int index= 16 + 4*chroma_idx + i4x4; if( decode_residual(h, gb, h->mb + 16*index, index, scan + 1, chroma_qp, 15) < 0){ return -1; } } } }else{ uint8_t * const nnz= &h->non_zero_count_cache[0]; nnz[ scan8[16]+0 ] = nnz[ scan8[16]+1 ] =nnz[ scan8[16]+8 ] =nnz[ scan8[16]+9 ] = nnz[ scan8[20]+0 ] = nnz[ scan8[20]+1 ] =nnz[ scan8[20]+8 ] =nnz[ scan8[20]+9 ] = 0; } }else{ uint8_t * const nnz= &h->non_zero_count_cache[0]; fill_rectangle(&nnz[scan8[0]], 4, 4, 8, 0, 1); nnz[ scan8[16]+0 ] = nnz[ scan8[16]+1 ] =nnz[ scan8[16]+8 ] =nnz[ scan8[16]+9 ] = nnz[ scan8[20]+0 ] = nnz[ scan8[20]+1 ] =nnz[ scan8[20]+8 ] =nnz[ scan8[20]+9 ] = 0; } s->current_picture.qscale_table[mb_xy]= s->qscale; write_back_non_zero_count(h); return 0; } static int decode_cabac_intra_mb_type(H264Context *h, int ctx_base, int intra_slice) { uint8_t *state= &h->cabac_state[ctx_base]; int mb_type; if(intra_slice){ MpegEncContext * const s = &h->s; const int mb_xy= s->mb_x + s->mb_y*s->mb_stride; int ctx=0; if( s->mb_x > 0 && !IS_INTRA4x4( s->current_picture.mb_type[mb_xy-1] ) ) ctx++; if( s->mb_y > 0 && !IS_INTRA4x4( s->current_picture.mb_type[mb_xy-s->mb_stride] ) ) ctx++; if( get_cabac( &h->cabac, &state[ctx] ) == 0 ) return 0; /* I4x4 */ state += 2; }else{ if( get_cabac( &h->cabac, &state[0] ) == 0 ) return 0; /* I4x4 */ } if( get_cabac_terminate( &h->cabac ) ) return 25; /* PCM */ mb_type = 1; /* I16x16 */ if( get_cabac( &h->cabac, &state[1] ) ) mb_type += 12; /* cbp_luma != 0 */ if( get_cabac( &h->cabac, &state[2] ) ) { if( get_cabac( &h->cabac, &state[2+intra_slice] ) ) mb_type += 4 * 2; /* cbp_chroma == 2 */ else mb_type += 4 * 1; /* cbp_chroma == 1 */ } if( get_cabac( &h->cabac, &state[3+intra_slice] ) ) mb_type += 2; if( get_cabac( &h->cabac, &state[3+2*intra_slice] ) ) mb_type += 1; return mb_type; } static int decode_cabac_mb_type( H264Context *h ) { MpegEncContext * const s = &h->s; if( h->slice_type == I_TYPE ) { return decode_cabac_intra_mb_type(h, 3, 1); } else if( h->slice_type == P_TYPE ) { if( get_cabac( &h->cabac, &h->cabac_state[14] ) == 0 ) { /* P-type */ if( get_cabac( &h->cabac, &h->cabac_state[15] ) == 0 ) { if( get_cabac( &h->cabac, &h->cabac_state[16] ) == 0 ) return 0; /* P_L0_D16x16; */ else return 3; /* P_8x8; */ } else { if( get_cabac( &h->cabac, &h->cabac_state[17] ) == 0 ) return 2; /* P_L0_D8x16; */ else return 1; /* P_L0_D16x8; */ } } else { return decode_cabac_intra_mb_type(h, 17, 0) + 5; } } else if( h->slice_type == B_TYPE ) { const int mb_xy= s->mb_x + s->mb_y*s->mb_stride; int ctx = 0; int bits; if( s->mb_x > 0 && !IS_SKIP( s->current_picture.mb_type[mb_xy-1] ) && !IS_DIRECT( s->current_picture.mb_type[mb_xy-1] ) ) ctx++; if( s->mb_y > 0 && !IS_SKIP( s->current_picture.mb_type[mb_xy-s->mb_stride] ) && !IS_DIRECT( s->current_picture.mb_type[mb_xy-s->mb_stride] ) ) ctx++; if( !get_cabac( &h->cabac, &h->cabac_state[27+ctx] ) ) return 0; /* B_Direct_16x16 */ if( !get_cabac( &h->cabac, &h->cabac_state[27+3] ) ) { return 1 + get_cabac( &h->cabac, &h->cabac_state[27+5] ); /* B_L[01]_16x16 */ } bits = get_cabac( &h->cabac, &h->cabac_state[27+4] ) << 3; bits|= get_cabac( &h->cabac, &h->cabac_state[27+5] ) << 2; bits|= get_cabac( &h->cabac, &h->cabac_state[27+5] ) << 1; bits|= get_cabac( &h->cabac, &h->cabac_state[27+5] ); if( bits < 8 ) return bits + 3; /* B_Bi_16x16 through B_L1_L0_16x8 */ else if( bits == 13 ) { return decode_cabac_intra_mb_type(h, 32, 0) + 23; } else if( bits == 14 ) return 11; /* B_L1_L0_8x16 */ else if( bits == 15 ) return 22; /* B_8x8 */ bits= ( bits<<1 ) | get_cabac( &h->cabac, &h->cabac_state[27+5] ); return bits - 4; /* B_L0_Bi_* through B_Bi_Bi_* */ } else { /* TODO SI/SP frames? */ return -1; } } static int decode_cabac_mb_skip( H264Context *h) { MpegEncContext * const s = &h->s; const int mb_xy = s->mb_x + s->mb_y*s->mb_stride; const int mba_xy = mb_xy - 1; const int mbb_xy = mb_xy - s->mb_stride; int ctx = 0; if( s->mb_x > 0 && !IS_SKIP( s->current_picture.mb_type[mba_xy] ) ) ctx++; if( s->mb_y > 0 && !IS_SKIP( s->current_picture.mb_type[mbb_xy] ) ) ctx++; if( h->slice_type == P_TYPE || h->slice_type == SP_TYPE) return get_cabac( &h->cabac, &h->cabac_state[11+ctx] ); else /* B-frame */ return get_cabac( &h->cabac, &h->cabac_state[24+ctx] ); } static int decode_cabac_mb_intra4x4_pred_mode( H264Context *h, int pred_mode ) { int mode = 0; if( get_cabac( &h->cabac, &h->cabac_state[68] ) ) return pred_mode; if( get_cabac( &h->cabac, &h->cabac_state[69] ) ) mode += 1; if( get_cabac( &h->cabac, &h->cabac_state[69] ) ) mode += 2; if( get_cabac( &h->cabac, &h->cabac_state[69] ) ) mode += 4; if( mode >= pred_mode ) return mode + 1; else return mode; } static int decode_cabac_mb_chroma_pre_mode( H264Context *h) { MpegEncContext * const s = &h->s; const int mb_xy = s->mb_x + s->mb_y*s->mb_stride; const int mba_xy = mb_xy - 1; const int mbb_xy = mb_xy - s->mb_stride; int ctx = 0; /* No need to test for IS_INTRA4x4 and IS_INTRA16x16, as we set chroma_pred_mode_table to 0 */ if( s->mb_x > 0 && h->chroma_pred_mode_table[mba_xy] != 0 ) ctx++; if( s->mb_y > 0 && h->chroma_pred_mode_table[mbb_xy] != 0 ) ctx++; if( get_cabac( &h->cabac, &h->cabac_state[64+ctx] ) == 0 ) return 0; if( get_cabac( &h->cabac, &h->cabac_state[64+3] ) == 0 ) return 1; if( get_cabac( &h->cabac, &h->cabac_state[64+3] ) == 0 ) return 2; else return 3; } static const uint8_t block_idx_x[16] = { 0, 1, 0, 1, 2, 3, 2, 3, 0, 1, 0, 1, 2, 3, 2, 3 }; static const uint8_t block_idx_y[16] = { 0, 0, 1, 1, 0, 0, 1, 1, 2, 2, 3, 3, 2, 2, 3, 3 }; static const uint8_t block_idx_xy[4][4] = { { 0, 2, 8, 10}, { 1, 3, 9, 11}, { 4, 6, 12, 14}, { 5, 7, 13, 15} }; static int decode_cabac_mb_cbp_luma( H264Context *h) { MpegEncContext * const s = &h->s; const int mb_xy = s->mb_x + s->mb_y*s->mb_stride; int cbp = 0; int i8x8; h->cbp_table[mb_xy] = 0; /* FIXME aaahahahah beurk */ for( i8x8 = 0; i8x8 < 4; i8x8++ ) { int mba_xy = -1; int mbb_xy = -1; int x, y; int ctx = 0; x = block_idx_x[4*i8x8]; y = block_idx_y[4*i8x8]; if( x > 0 ) mba_xy = mb_xy; else if( s->mb_x > 0 ) mba_xy = mb_xy - 1; if( y > 0 ) mbb_xy = mb_xy; else if( s->mb_y > 0 ) mbb_xy = mb_xy - s->mb_stride; /* No need to test for skip as we put 0 for skip block */ if( mba_xy >= 0 ) { int i8x8a = block_idx_xy[(x-1)&0x03][y]/4; if( ((h->cbp_table[mba_xy] >> i8x8a)&0x01) == 0 ) ctx++; } if( mbb_xy >= 0 ) { int i8x8b = block_idx_xy[x][(y-1)&0x03]/4; if( ((h->cbp_table[mbb_xy] >> i8x8b)&0x01) == 0 ) ctx += 2; } if( get_cabac( &h->cabac, &h->cabac_state[73 + ctx] ) ) { cbp |= 1 << i8x8; h->cbp_table[mb_xy] = cbp; /* FIXME aaahahahah beurk */ } } return cbp; } static int decode_cabac_mb_cbp_chroma( H264Context *h) { int ctx; int cbp_a, cbp_b; cbp_a = (h->left_cbp>>4)&0x03; cbp_b = (h-> top_cbp>>4)&0x03; ctx = 0; if( cbp_a > 0 ) ctx++; if( cbp_b > 0 ) ctx += 2; if( get_cabac( &h->cabac, &h->cabac_state[77 + ctx] ) == 0 ) return 0; ctx = 4; if( cbp_a == 2 ) ctx++; if( cbp_b == 2 ) ctx += 2; return 1 + get_cabac( &h->cabac, &h->cabac_state[77 + ctx] ); } static int decode_cabac_mb_dqp( H264Context *h) { MpegEncContext * const s = &h->s; int mbn_xy; int ctx = 0; int val = 0; if( s->mb_x > 0 ) mbn_xy = s->mb_x + s->mb_y*s->mb_stride - 1; else mbn_xy = s->mb_width - 1 + (s->mb_y-1)*s->mb_stride; if( mbn_xy >= 0 && h->last_qscale_diff != 0 && ( IS_INTRA16x16(s->current_picture.mb_type[mbn_xy] ) || (h->cbp_table[mbn_xy]&0x3f) ) ) ctx++; while( get_cabac( &h->cabac, &h->cabac_state[60 + ctx] ) ) { if( ctx < 2 ) ctx = 2; else ctx = 3; val++; } if( val&0x01 ) return (val + 1)/2; else return -(val + 1)/2; } static int decode_cabac_p_mb_sub_type( H264Context *h ) { if( get_cabac( &h->cabac, &h->cabac_state[21] ) ) return 0; /* 8x8 */ if( !get_cabac( &h->cabac, &h->cabac_state[22] ) ) return 1; /* 8x4 */ if( get_cabac( &h->cabac, &h->cabac_state[23] ) ) return 2; /* 4x8 */ return 3; /* 4x4 */ } static int decode_cabac_b_mb_sub_type( H264Context *h ) { int type; if( !get_cabac( &h->cabac, &h->cabac_state[36] ) ) return 0; /* B_Direct_8x8 */ if( !get_cabac( &h->cabac, &h->cabac_state[37] ) ) return 1 + get_cabac( &h->cabac, &h->cabac_state[39] ); /* B_L0_8x8, B_L1_8x8 */ type = 3; if( get_cabac( &h->cabac, &h->cabac_state[38] ) ) { if( get_cabac( &h->cabac, &h->cabac_state[39] ) ) return 11 + get_cabac( &h->cabac, &h->cabac_state[39] ); /* B_L1_4x4, B_Bi_4x4 */ type += 4; } type += 2*get_cabac( &h->cabac, &h->cabac_state[39] ); type += get_cabac( &h->cabac, &h->cabac_state[39] ); return type; } static int decode_cabac_mb_ref( H264Context *h, int list, int n ) { int refa = h->ref_cache[list][scan8[n] - 1]; int refb = h->ref_cache[list][scan8[n] - 8]; int ref = 0; int ctx = 0; if( h->slice_type == B_TYPE) { if( refa > 0 && !h->direct_cache[scan8[n] - 1] ) ctx++; if( refb > 0 && !h->direct_cache[scan8[n] - 8] ) ctx += 2; } else { if( refa > 0 ) ctx++; if( refb > 0 ) ctx += 2; } while( get_cabac( &h->cabac, &h->cabac_state[54+ctx] ) ) { ref++; if( ctx < 4 ) ctx = 4; else ctx = 5; } return ref; } static int decode_cabac_mb_mvd( H264Context *h, int list, int n, int l ) { int amvd = abs( h->mvd_cache[list][scan8[n] - 1][l] ) + abs( h->mvd_cache[list][scan8[n] - 8][l] ); int ctxbase = (l == 0) ? 40 : 47; int ctx, mvd; if( amvd < 3 ) ctx = 0; else if( amvd > 32 ) ctx = 2; else ctx = 1; if(!get_cabac(&h->cabac, &h->cabac_state[ctxbase+ctx])) return 0; mvd= 1; ctx= 3; while( mvd < 9 && get_cabac( &h->cabac, &h->cabac_state[ctxbase+ctx] ) ) { mvd++; if( ctx < 6 ) ctx++; } if( mvd >= 9 ) { int k = 3; while( get_cabac_bypass( &h->cabac ) ) { mvd += 1 << k; k++; } while( k-- ) { if( get_cabac_bypass( &h->cabac ) ) mvd += 1 << k; } } if( get_cabac_bypass( &h->cabac ) ) return -mvd; else return mvd; } static int inline get_cabac_cbf_ctx( H264Context *h, int cat, int idx ) { int nza, nzb; int ctx = 0; if( cat == 0 ) { nza = h->left_cbp&0x100; nzb = h-> top_cbp&0x100; } else if( cat == 1 || cat == 2 ) { nza = h->non_zero_count_cache[scan8[idx] - 1]; nzb = h->non_zero_count_cache[scan8[idx] - 8]; } else if( cat == 3 ) { nza = (h->left_cbp>>(6+idx))&0x01; nzb = (h-> top_cbp>>(6+idx))&0x01; } else { assert(cat == 4); nza = h->non_zero_count_cache[scan8[16+idx] - 1]; nzb = h->non_zero_count_cache[scan8[16+idx] - 8]; } if( nza > 0 ) ctx++; if( nzb > 0 ) ctx += 2; return ctx + 4 * cat; } static int inline decode_cabac_residual( H264Context *h, DCTELEM *block, int cat, int n, const uint8_t *scantable, int qp, int max_coeff) { const int mb_xy = h->s.mb_x + h->s.mb_y*h->s.mb_stride; const uint16_t *qmul= dequant_coeff[qp]; static const int significant_coeff_flag_offset[5] = { 0, 15, 29, 44, 47 }; static const int coeff_abs_level_m1_offset[5] = {227+ 0, 227+10, 227+20, 227+30, 227+39 }; int index[16]; int i, last; int coeff_count = 0; int abslevel1 = 1; int abslevelgt1 = 0; /* cat: 0-> DC 16x16 n = 0 * 1-> AC 16x16 n = luma4x4idx * 2-> Luma4x4 n = luma4x4idx * 3-> DC Chroma n = iCbCr * 4-> AC Chroma n = 4 * iCbCr + chroma4x4idx */ /* read coded block flag */ if( get_cabac( &h->cabac, &h->cabac_state[85 + get_cabac_cbf_ctx( h, cat, n ) ] ) == 0 ) { if( cat == 1 || cat == 2 ) h->non_zero_count_cache[scan8[n]] = 0; else if( cat == 4 ) h->non_zero_count_cache[scan8[16+n]] = 0; return 0; } for(last= 0; last < max_coeff - 1; last++) { if( get_cabac( &h->cabac, &h->cabac_state[105+significant_coeff_flag_offset[cat]+last] )) { index[coeff_count++] = last; if( get_cabac( &h->cabac, &h->cabac_state[166+significant_coeff_flag_offset[cat]+last] ) ) { last= max_coeff; break; } } } if( last == max_coeff -1 ) { index[coeff_count++] = last; } assert(coeff_count > 0); if( cat == 0 ) h->cbp_table[mb_xy] |= 0x100; else if( cat == 1 || cat == 2 ) h->non_zero_count_cache[scan8[n]] = coeff_count; else if( cat == 3 ) h->cbp_table[mb_xy] |= 0x40 << n; else { assert( cat == 4 ); h->non_zero_count_cache[scan8[16+n]] = coeff_count; } for( i = coeff_count - 1; i >= 0; i-- ) { int ctx = (abslevelgt1 != 0 ? 0 : FFMIN( 4, abslevel1 )) + coeff_abs_level_m1_offset[cat]; int j= scantable[index[i]]; if( get_cabac( &h->cabac, &h->cabac_state[ctx] ) == 0 ) { if( cat == 0 || cat == 3 ) { if( get_cabac_bypass( &h->cabac ) ) block[j] = -1; else block[j] = 1; }else{ if( get_cabac_bypass( &h->cabac ) ) block[j] = -qmul[j]; else block[j] = qmul[j]; } abslevel1++; } else { int coeff_abs = 2; ctx = 5 + FFMIN( 4, abslevelgt1 ) + coeff_abs_level_m1_offset[cat]; while( coeff_abs < 15 && get_cabac( &h->cabac, &h->cabac_state[ctx] ) ) { coeff_abs++; } if( coeff_abs >= 15 ) { int j = 0; while( get_cabac_bypass( &h->cabac ) ) { coeff_abs += 1 << j; j++; } while( j-- ) { if( get_cabac_bypass( &h->cabac ) ) coeff_abs += 1 << j ; } } if( cat == 0 || cat == 3 ) { if( get_cabac_bypass( &h->cabac ) ) block[j] = -coeff_abs; else block[j] = coeff_abs; }else{ if( get_cabac_bypass( &h->cabac ) ) block[j] = -coeff_abs * qmul[j]; else block[j] = coeff_abs * qmul[j]; } abslevelgt1++; } } return 0; } /** * decodes a macroblock * @returns 0 if ok, AC_ERROR / DC_ERROR / MV_ERROR if an error is noticed */ static int decode_mb_cabac(H264Context *h) { MpegEncContext * const s = &h->s; const int mb_xy= s->mb_x + s->mb_y*s->mb_stride; int mb_type, partition_count, cbp = 0; s->dsp.clear_blocks(h->mb); //FIXME avoid if allready clear (move after skip handlong?) if( h->sps.mb_aff ) { av_log( h->s.avctx, AV_LOG_ERROR, "Fields not supported with CABAC\n" ); return -1; } tprintf("pic:%d mb:%d/%d\n", h->frame_num, s->mb_x, s->mb_y); if( h->slice_type != I_TYPE && h->slice_type != SI_TYPE ) { /* read skip flags */ if( decode_cabac_mb_skip( h ) ) { decode_mb_skip(h); h->cbp_table[mb_xy] = 0; h->chroma_pred_mode_table[mb_xy] = 0; h->last_qscale_diff = 0; return 0; } } h->prev_mb_skiped = 0; if( ( mb_type = decode_cabac_mb_type( h ) ) < 0 ) { av_log( h->s.avctx, AV_LOG_ERROR, "decode_cabac_mb_type failed\n" ); return -1; } if( h->slice_type == B_TYPE ) { if( mb_type < 23 ){ partition_count= b_mb_type_info[mb_type].partition_count; mb_type= b_mb_type_info[mb_type].type; }else{ mb_type -= 23; goto decode_intra_mb; } } else if( h->slice_type == P_TYPE ) { if( mb_type < 5) { partition_count= p_mb_type_info[mb_type].partition_count; mb_type= p_mb_type_info[mb_type].type; } else { mb_type -= 5; goto decode_intra_mb; } } else { assert(h->slice_type == I_TYPE); decode_intra_mb: partition_count = 0; cbp= i_mb_type_info[mb_type].cbp; h->intra16x16_pred_mode= i_mb_type_info[mb_type].pred_mode; mb_type= i_mb_type_info[mb_type].type; } #if 0 if(h->mb_field_decoding_flag) mb_type |= MB_TYPE_INTERLACED; #endif s->current_picture.mb_type[mb_xy]= mb_type; h->slice_table[ mb_xy ]= h->slice_num; if(IS_INTRA_PCM(mb_type)) { /* TODO */ assert(0); h->cbp_table[mb_xy] = 0xf +4*2; //FIXME ?! h->cbp_table[mb_xy] |= 0x1C0; h->chroma_pred_mode_table[mb_xy] = 0; s->current_picture.qscale_table[mb_xy]= s->qscale; return -1; } fill_caches(h, mb_type, 0); if( IS_INTRA( mb_type ) ) { if( IS_INTRA4x4( mb_type ) ) { int i; for( i = 0; i < 16; i++ ) { int pred = pred_intra_mode( h, i ); h->intra4x4_pred_mode_cache[ scan8[i] ] = decode_cabac_mb_intra4x4_pred_mode( h, pred ); //av_log( s->avctx, AV_LOG_ERROR, "i4x4 pred=%d mode=%d\n", pred, h->intra4x4_pred_mode_cache[ scan8[i] ] ); } write_back_intra_pred_mode(h); if( check_intra4x4_pred_mode(h) < 0 ) return -1; } else { h->intra16x16_pred_mode= check_intra_pred_mode( h, h->intra16x16_pred_mode ); if( h->intra16x16_pred_mode < 0 ) return -1; } h->chroma_pred_mode_table[mb_xy] = h->chroma_pred_mode = decode_cabac_mb_chroma_pre_mode( h ); h->chroma_pred_mode= check_intra_pred_mode( h, h->chroma_pred_mode ); if( h->chroma_pred_mode < 0 ) return -1; } else if( partition_count == 4 ) { int i, j, sub_partition_count[4], list, ref[2][4]; if( h->slice_type == B_TYPE ) { for( i = 0; i < 4; i++ ) { h->sub_mb_type[i] = decode_cabac_b_mb_sub_type( h ); sub_partition_count[i]= b_sub_mb_type_info[ h->sub_mb_type[i] ].partition_count; h->sub_mb_type[i]= b_sub_mb_type_info[ h->sub_mb_type[i] ].type; } if( IS_DIRECT(h->sub_mb_type[0]) || IS_DIRECT(h->sub_mb_type[1]) || IS_DIRECT(h->sub_mb_type[2]) || IS_DIRECT(h->sub_mb_type[3])) { pred_direct_motion(h, &mb_type); if( h->ref_count[0] > 1 || h->ref_count[1] > 1 ) { for( i = 0; i < 4; i++ ) if( IS_DIRECT(h->sub_mb_type[i]) ) fill_rectangle( &h->direct_cache[scan8[4*i]], 2, 2, 8, 1, 1 ); } } } else { for( i = 0; i < 4; i++ ) { h->sub_mb_type[i] = decode_cabac_p_mb_sub_type( h ); sub_partition_count[i]= p_sub_mb_type_info[ h->sub_mb_type[i] ].partition_count; h->sub_mb_type[i]= p_sub_mb_type_info[ h->sub_mb_type[i] ].type; } } for( list = 0; list < 2; list++ ) { if( h->ref_count[list] > 0 ) { for( i = 0; i < 4; i++ ) { if(IS_DIRECT(h->sub_mb_type[i])) continue; if(IS_DIR(h->sub_mb_type[i], 0, list)){ if( h->ref_count[list] > 1 ) ref[list][i] = decode_cabac_mb_ref( h, list, 4*i ); else ref[list][i] = 0; } else { ref[list][i] = -1; } h->ref_cache[list][ scan8[4*i]+1 ]= h->ref_cache[list][ scan8[4*i]+8 ]=h->ref_cache[list][ scan8[4*i]+9 ]= ref[list][i]; } } } for(list=0; list<2; list++){ for(i=0; i<4; i++){ if(IS_DIRECT(h->sub_mb_type[i])){ fill_rectangle(h->mvd_cache[list][scan8[4*i]], 2, 2, 8, 0, 4); continue; } h->ref_cache[list][ scan8[4*i] ]=h->ref_cache[list][ scan8[4*i]+1 ]; if(IS_DIR(h->sub_mb_type[i], 0, list) && !IS_DIRECT(h->sub_mb_type[i])){ const int sub_mb_type= h->sub_mb_type[i]; const int block_width= (sub_mb_type & (MB_TYPE_16x16|MB_TYPE_16x8)) ? 2 : 1; for(j=0; jmv_cache[list][ scan8[index] ]; int16_t (* mvd_cache)[2]= &h->mvd_cache[list][ scan8[index] ]; pred_motion(h, index, block_width, list, h->ref_cache[list][ scan8[index] ], &mpx, &mpy); mx = mpx + decode_cabac_mb_mvd( h, list, index, 0 ); my = mpy + decode_cabac_mb_mvd( h, list, index, 1 ); tprintf("final mv:%d %d\n", mx, my); if(IS_SUB_8X8(sub_mb_type)){ mv_cache[ 0 ][0]= mv_cache[ 1 ][0]= mv_cache[ 8 ][0]= mv_cache[ 9 ][0]= mx; mv_cache[ 0 ][1]= mv_cache[ 1 ][1]= mv_cache[ 8 ][1]= mv_cache[ 9 ][1]= my; mvd_cache[ 0 ][0]= mvd_cache[ 1 ][0]= mvd_cache[ 8 ][0]= mvd_cache[ 9 ][0]= mx - mpx; mvd_cache[ 0 ][1]= mvd_cache[ 1 ][1]= mvd_cache[ 8 ][1]= mvd_cache[ 9 ][1]= my - mpy; }else if(IS_SUB_8X4(sub_mb_type)){ mv_cache[ 0 ][0]= mv_cache[ 1 ][0]= mx; mv_cache[ 0 ][1]= mv_cache[ 1 ][1]= my; mvd_cache[ 0 ][0]= mvd_cache[ 1 ][0]= mx- mpx; mvd_cache[ 0 ][1]= mvd_cache[ 1 ][1]= my - mpy; }else if(IS_SUB_4X8(sub_mb_type)){ mv_cache[ 0 ][0]= mv_cache[ 8 ][0]= mx; mv_cache[ 0 ][1]= mv_cache[ 8 ][1]= my; mvd_cache[ 0 ][0]= mvd_cache[ 8 ][0]= mx - mpx; mvd_cache[ 0 ][1]= mvd_cache[ 8 ][1]= my - mpy; }else{ assert(IS_SUB_4X4(sub_mb_type)); mv_cache[ 0 ][0]= mx; mv_cache[ 0 ][1]= my; mvd_cache[ 0 ][0]= mx - mpx; mvd_cache[ 0 ][1]= my - mpy; } } }else{ uint32_t *p= (uint32_t *)&h->mv_cache[list][ scan8[4*i] ][0]; uint32_t *pd= (uint32_t *)&h->mvd_cache[list][ scan8[4*i] ][0]; p[0] = p[1] = p[8] = p[9] = 0; pd[0]= pd[1]= pd[8]= pd[9]= 0; } } } } else if( IS_DIRECT(mb_type) ) { pred_direct_motion(h, &mb_type); s->current_picture.mb_type[mb_xy]= mb_type; fill_rectangle(h->mvd_cache[0][scan8[0]], 4, 4, 8, 0, 4); fill_rectangle(h->mvd_cache[1][scan8[0]], 4, 4, 8, 0, 4); } else { int list, mx, my, i, mpx, mpy; if(IS_16X16(mb_type)){ for(list=0; list<2; list++){ if(IS_DIR(mb_type, 0, list)){ if(h->ref_count[list] > 0 ){ const int ref = h->ref_count[list] > 1 ? decode_cabac_mb_ref( h, list, 0 ) : 0; fill_rectangle(&h->ref_cache[list][ scan8[0] ], 4, 4, 8, ref, 1); } } } for(list=0; list<2; list++){ if(IS_DIR(mb_type, 0, list)){ pred_motion(h, 0, 4, list, h->ref_cache[list][ scan8[0] ], &mpx, &mpy); mx = mpx + decode_cabac_mb_mvd( h, list, 0, 0 ); my = mpy + decode_cabac_mb_mvd( h, list, 0, 1 ); tprintf("final mv:%d %d\n", mx, my); fill_rectangle(h->mvd_cache[list][ scan8[0] ], 4, 4, 8, pack16to32(mx-mpx,my-mpy), 4); fill_rectangle(h->mv_cache[list][ scan8[0] ], 4, 4, 8, pack16to32(mx,my), 4); } } } else if(IS_16X8(mb_type)){ for(list=0; list<2; list++){ if(h->ref_count[list]>0){ for(i=0; i<2; i++){ if(IS_DIR(mb_type, i, list)){ const int ref= h->ref_count[list] > 1 ? decode_cabac_mb_ref( h, list, 8*i ) : 0; fill_rectangle(&h->ref_cache[list][ scan8[0] + 16*i ], 4, 2, 8, ref, 1); }else fill_rectangle(&h->ref_cache[list][ scan8[0] + 16*i ], 4, 2, 8, (LIST_NOT_USED&0xFF), 1); } } } for(list=0; list<2; list++){ for(i=0; i<2; i++){ if(IS_DIR(mb_type, i, list)){ pred_16x8_motion(h, 8*i, list, h->ref_cache[list][scan8[0] + 16*i], &mpx, &mpy); mx = mpx + decode_cabac_mb_mvd( h, list, 8*i, 0 ); my = mpy + decode_cabac_mb_mvd( h, list, 8*i, 1 ); tprintf("final mv:%d %d\n", mx, my); fill_rectangle(h->mvd_cache[list][ scan8[0] + 16*i ], 4, 2, 8, pack16to32(mx-mpx,my-mpy), 4); fill_rectangle(h->mv_cache[list][ scan8[0] + 16*i ], 4, 2, 8, pack16to32(mx,my), 4); }else{ // needed only for mixed refs fill_rectangle(h->mvd_cache[list][ scan8[0] + 16*i ], 4, 2, 8, 0, 4); fill_rectangle(h-> mv_cache[list][ scan8[0] + 16*i ], 4, 2, 8, 0, 4); } } } }else{ assert(IS_8X16(mb_type)); for(list=0; list<2; list++){ if(h->ref_count[list]>0){ for(i=0; i<2; i++){ if(IS_DIR(mb_type, i, list)){ //FIXME optimize const int ref= h->ref_count[list] > 1 ? decode_cabac_mb_ref( h, list, 4*i ) : 0; fill_rectangle(&h->ref_cache[list][ scan8[0] + 2*i ], 2, 4, 8, ref, 1); }else fill_rectangle(&h->ref_cache[list][ scan8[0] + 2*i ], 2, 4, 8, (LIST_NOT_USED&0xFF), 1); } } } for(list=0; list<2; list++){ for(i=0; i<2; i++){ if(IS_DIR(mb_type, i, list)){ pred_8x16_motion(h, i*4, list, h->ref_cache[list][ scan8[0] + 2*i ], &mpx, &mpy); mx = mpx + decode_cabac_mb_mvd( h, list, 4*i, 0 ); my = mpy + decode_cabac_mb_mvd( h, list, 4*i, 1 ); tprintf("final mv:%d %d\n", mx, my); fill_rectangle(h->mvd_cache[list][ scan8[0] + 2*i ], 2, 4, 8, pack16to32(mx-mpx,my-mpy), 4); fill_rectangle(h->mv_cache[list][ scan8[0] + 2*i ], 2, 4, 8, pack16to32(mx,my), 4); }else{ // needed only for mixed refs fill_rectangle(h->mvd_cache[list][ scan8[0] + 2*i ], 2, 4, 8, 0, 4); fill_rectangle(h-> mv_cache[list][ scan8[0] + 2*i ], 2, 4, 8, 0, 4); } } } } } if( IS_INTER( mb_type ) ) { h->chroma_pred_mode_table[mb_xy] = 0; write_back_motion( h, mb_type ); } if( !IS_INTRA16x16( mb_type ) ) { cbp = decode_cabac_mb_cbp_luma( h ); cbp |= decode_cabac_mb_cbp_chroma( h ) << 4; } h->cbp_table[mb_xy] = cbp; if( cbp || IS_INTRA16x16( mb_type ) ) { const uint8_t *scan, *dc_scan; int dqp; if(IS_INTERLACED(mb_type)){ scan= field_scan; dc_scan= luma_dc_field_scan; }else{ scan= zigzag_scan; dc_scan= luma_dc_zigzag_scan; } h->last_qscale_diff = dqp = decode_cabac_mb_dqp( h ); s->qscale += dqp; if(((unsigned)s->qscale) > 51){ if(s->qscale<0) s->qscale+= 52; else s->qscale-= 52; } h->chroma_qp = get_chroma_qp(h, s->qscale); if( IS_INTRA16x16( mb_type ) ) { int i; //av_log( s->avctx, AV_LOG_ERROR, "INTRA16x16 DC\n" ); if( decode_cabac_residual( h, h->mb, 0, 0, dc_scan, s->qscale, 16) < 0) return -1; if( cbp&15 ) { for( i = 0; i < 16; i++ ) { //av_log( s->avctx, AV_LOG_ERROR, "INTRA16x16 AC:%d\n", i ); if( decode_cabac_residual(h, h->mb + 16*i, 1, i, scan + 1, s->qscale, 15) < 0 ) return -1; } } else { fill_rectangle(&h->non_zero_count_cache[scan8[0]], 4, 4, 8, 0, 1); } } else { int i8x8, i4x4; for( i8x8 = 0; i8x8 < 4; i8x8++ ) { if( cbp & (1<avctx, AV_LOG_ERROR, "Luma4x4: %d\n", index ); if( decode_cabac_residual(h, h->mb + 16*index, 2, index, scan, s->qscale, 16) < 0 ) return -1; } } else { uint8_t * const nnz= &h->non_zero_count_cache[ scan8[4*i8x8] ]; nnz[0] = nnz[1] = nnz[8] = nnz[9] = 0; } } } if( cbp&0x30 ){ int c; for( c = 0; c < 2; c++ ) { //av_log( s->avctx, AV_LOG_ERROR, "INTRA C%d-DC\n",c ); if( decode_cabac_residual(h, h->mb + 256 + 16*4*c, 3, c, chroma_dc_scan, h->chroma_qp, 4) < 0) return -1; } } if( cbp&0x20 ) { int c, i; for( c = 0; c < 2; c++ ) { for( i = 0; i < 4; i++ ) { const int index = 16 + 4 * c + i; //av_log( s->avctx, AV_LOG_ERROR, "INTRA C%d-AC %d\n",c, index - 16 ); if( decode_cabac_residual(h, h->mb + 16*index, 4, index - 16, scan + 1, h->chroma_qp, 15) < 0) return -1; } } } else { uint8_t * const nnz= &h->non_zero_count_cache[0]; nnz[ scan8[16]+0 ] = nnz[ scan8[16]+1 ] =nnz[ scan8[16]+8 ] =nnz[ scan8[16]+9 ] = nnz[ scan8[20]+0 ] = nnz[ scan8[20]+1 ] =nnz[ scan8[20]+8 ] =nnz[ scan8[20]+9 ] = 0; } } else { uint8_t * const nnz= &h->non_zero_count_cache[0]; fill_rectangle(&nnz[scan8[0]], 4, 4, 8, 0, 1); nnz[ scan8[16]+0 ] = nnz[ scan8[16]+1 ] =nnz[ scan8[16]+8 ] =nnz[ scan8[16]+9 ] = nnz[ scan8[20]+0 ] = nnz[ scan8[20]+1 ] =nnz[ scan8[20]+8 ] =nnz[ scan8[20]+9 ] = 0; } s->current_picture.qscale_table[mb_xy]= s->qscale; write_back_non_zero_count(h); return 0; } static void filter_mb_edgev( H264Context *h, uint8_t *pix, int stride, int bS[4], int qp ) { int i, d; const int index_a = clip( qp + h->slice_alpha_c0_offset, 0, 51 ); const int alpha = alpha_table[index_a]; const int beta = beta_table[clip( qp + h->slice_beta_offset, 0, 51 )]; for( i = 0; i < 4; i++ ) { if( bS[i] == 0 ) { pix += 4 * stride; continue; } if( bS[i] < 4 ) { const int tc0 = tc0_table[index_a][bS[i] - 1]; /* 4px edge length */ for( d = 0; d < 4; d++ ) { const int p0 = pix[-1]; const int p1 = pix[-2]; const int p2 = pix[-3]; const int q0 = pix[0]; const int q1 = pix[1]; const int q2 = pix[2]; if( ABS( p0 - q0 ) < alpha && ABS( p1 - p0 ) < beta && ABS( q1 - q0 ) < beta ) { int tc = tc0; int i_delta; if( ABS( p2 - p0 ) < beta ) { pix[-2] = p1 + clip( ( p2 + ( ( p0 + q0 + 1 ) >> 1 ) - ( p1 << 1 ) ) >> 1, -tc0, tc0 ); tc++; } if( ABS( q2 - q0 ) < beta ) { pix[1] = q1 + clip( ( q2 + ( ( p0 + q0 + 1 ) >> 1 ) - ( q1 << 1 ) ) >> 1, -tc0, tc0 ); tc++; } i_delta = clip( (((q0 - p0 ) << 2) + (p1 - q1) + 4) >> 3, -tc, tc ); pix[-1] = clip_uint8( p0 + i_delta ); /* p0' */ pix[0] = clip_uint8( q0 - i_delta ); /* q0' */ } pix += stride; } }else{ /* 4px edge length */ for( d = 0; d < 4; d++ ) { const int p0 = pix[-1]; const int p1 = pix[-2]; const int p2 = pix[-3]; const int q0 = pix[0]; const int q1 = pix[1]; const int q2 = pix[2]; if( ABS( p0 - q0 ) < alpha && ABS( p1 - p0 ) < beta && ABS( q1 - q0 ) < beta ) { if(ABS( p0 - q0 ) < (( alpha >> 2 ) + 2 )){ if( ABS( p2 - p0 ) < beta) { const int p3 = pix[-4]; /* p0', p1', p2' */ pix[-1] = ( p2 + 2*p1 + 2*p0 + 2*q0 + q1 + 4 ) >> 3; pix[-2] = ( p2 + p1 + p0 + q0 + 2 ) >> 2; pix[-3] = ( 2*p3 + 3*p2 + p1 + p0 + q0 + 4 ) >> 3; } else { /* p0' */ pix[-1] = ( 2*p1 + p0 + q1 + 2 ) >> 2; } if( ABS( q2 - q0 ) < beta) { const int q3 = pix[3]; /* q0', q1', q2' */ pix[0] = ( p1 + 2*p0 + 2*q0 + 2*q1 + q2 + 4 ) >> 3; pix[1] = ( p0 + q0 + q1 + q2 + 2 ) >> 2; pix[2] = ( 2*q3 + 3*q2 + q1 + q0 + p0 + 4 ) >> 3; } else { /* q0' */ pix[0] = ( 2*q1 + q0 + p1 + 2 ) >> 2; } }else{ /* p0', q0' */ pix[-1] = ( 2*p1 + p0 + q1 + 2 ) >> 2; pix[ 0] = ( 2*q1 + q0 + p1 + 2 ) >> 2; } } pix += stride; } } } } static void filter_mb_edgecv( H264Context *h, uint8_t *pix, int stride, int bS[4], int qp ) { int i, d; const int index_a = clip( qp + h->slice_alpha_c0_offset, 0, 51 ); const int alpha = alpha_table[index_a]; const int beta = beta_table[clip( qp + h->slice_beta_offset, 0, 51 )]; for( i = 0; i < 4; i++ ) { if( bS[i] == 0 ) { pix += 2 * stride; continue; } if( bS[i] < 4 ) { const int tc = tc0_table[index_a][bS[i] - 1] + 1; /* 2px edge length (because we use same bS than the one for luma) */ for( d = 0; d < 2; d++ ){ const int p0 = pix[-1]; const int p1 = pix[-2]; const int q0 = pix[0]; const int q1 = pix[1]; if( ABS( p0 - q0 ) < alpha && ABS( p1 - p0 ) < beta && ABS( q1 - q0 ) < beta ) { const int i_delta = clip( (((q0 - p0 ) << 2) + (p1 - q1) + 4) >> 3, -tc, tc ); pix[-1] = clip_uint8( p0 + i_delta ); /* p0' */ pix[0] = clip_uint8( q0 - i_delta ); /* q0' */ //tprintf("filter_mb_edgecv i:%d d:%d, qp:%d, indexA:%d, alpha:%d, beta:%d, tc:%d\n# bS:%d -> [%02x, %02x, %02x, %02x, %02x, %02x] =>[%02x, %02x, %02x, %02x]\n", i, d, qp, index_a, alpha, beta, tc, bS[i], pix[-3], p1, p0, q0, q1, pix[2], p1, pix[-1], pix[0], q1); } pix += stride; } }else{ /* 2px edge length (because we use same bS than the one for luma) */ for( d = 0; d < 2; d++ ){ const int p0 = pix[-1]; const int p1 = pix[-2]; const int q0 = pix[0]; const int q1 = pix[1]; if( ABS( p0 - q0 ) < alpha && ABS( p1 - p0 ) < beta && ABS( q1 - q0 ) < beta ) { pix[-1] = ( 2*p1 + p0 + q1 + 2 ) >> 2; /* p0' */ pix[0] = ( 2*q1 + q0 + p1 + 2 ) >> 2; /* q0' */ //tprintf("filter_mb_edgecv i:%d d:%d\n# bS:4 -> [%02x, %02x, %02x, %02x, %02x, %02x] =>[%02x, %02x, %02x, %02x]\n", i, d, pix[-3], p1, p0, q0, q1, pix[2], p1, pix[-1], pix[0], q1); } pix += stride; } } } } static void filter_mb_edgeh( H264Context *h, uint8_t *pix, int stride, int bS[4], int qp ) { int i, d; const int index_a = clip( qp + h->slice_alpha_c0_offset, 0, 51 ); const int alpha = alpha_table[index_a]; const int beta = beta_table[clip( qp + h->slice_beta_offset, 0, 51 )]; const int pix_next = stride; for( i = 0; i < 4; i++ ) { if( bS[i] == 0 ) { pix += 4; continue; } if( bS[i] < 4 ) { const int tc0 = tc0_table[index_a][bS[i] - 1]; /* 4px edge length */ for( d = 0; d < 4; d++ ) { const int p0 = pix[-1*pix_next]; const int p1 = pix[-2*pix_next]; const int p2 = pix[-3*pix_next]; const int q0 = pix[0]; const int q1 = pix[1*pix_next]; const int q2 = pix[2*pix_next]; if( ABS( p0 - q0 ) < alpha && ABS( p1 - p0 ) < beta && ABS( q1 - q0 ) < beta ) { int tc = tc0; int i_delta; if( ABS( p2 - p0 ) < beta ) { pix[-2*pix_next] = p1 + clip( ( p2 + ( ( p0 + q0 + 1 ) >> 1 ) - ( p1 << 1 ) ) >> 1, -tc0, tc0 ); tc++; } if( ABS( q2 - q0 ) < beta ) { pix[pix_next] = q1 + clip( ( q2 + ( ( p0 + q0 + 1 ) >> 1 ) - ( q1 << 1 ) ) >> 1, -tc0, tc0 ); tc++; } i_delta = clip( (((q0 - p0 ) << 2) + (p1 - q1) + 4) >> 3, -tc, tc ); pix[-pix_next] = clip_uint8( p0 + i_delta ); /* p0' */ pix[0] = clip_uint8( q0 - i_delta ); /* q0' */ } pix++; } }else{ /* 4px edge length */ for( d = 0; d < 4; d++ ) { const int p0 = pix[-1*pix_next]; const int p1 = pix[-2*pix_next]; const int p2 = pix[-3*pix_next]; const int q0 = pix[0]; const int q1 = pix[1*pix_next]; const int q2 = pix[2*pix_next]; if( ABS( p0 - q0 ) < alpha && ABS( p1 - p0 ) < beta && ABS( q1 - q0 ) < beta ) { const int p3 = pix[-4*pix_next]; const int q3 = pix[ 3*pix_next]; if(ABS( p0 - q0 ) < (( alpha >> 2 ) + 2 )){ if( ABS( p2 - p0 ) < beta) { /* p0', p1', p2' */ pix[-1*pix_next] = ( p2 + 2*p1 + 2*p0 + 2*q0 + q1 + 4 ) >> 3; pix[-2*pix_next] = ( p2 + p1 + p0 + q0 + 2 ) >> 2; pix[-3*pix_next] = ( 2*p3 + 3*p2 + p1 + p0 + q0 + 4 ) >> 3; } else { /* p0' */ pix[-1*pix_next] = ( 2*p1 + p0 + q1 + 2 ) >> 2; } if( ABS( q2 - q0 ) < beta) { /* q0', q1', q2' */ pix[0*pix_next] = ( p1 + 2*p0 + 2*q0 + 2*q1 + q2 + 4 ) >> 3; pix[1*pix_next] = ( p0 + q0 + q1 + q2 + 2 ) >> 2; pix[2*pix_next] = ( 2*q3 + 3*q2 + q1 + q0 + p0 + 4 ) >> 3; } else { /* q0' */ pix[0*pix_next] = ( 2*q1 + q0 + p1 + 2 ) >> 2; } }else{ /* p0', q0' */ pix[-1*pix_next] = ( 2*p1 + p0 + q1 + 2 ) >> 2; pix[ 0*pix_next] = ( 2*q1 + q0 + p1 + 2 ) >> 2; } } pix++; } } } } static void filter_mb_edgech( H264Context *h, uint8_t *pix, int stride, int bS[4], int qp ) { int i, d; const int index_a = clip( qp + h->slice_alpha_c0_offset, 0, 51 ); const int alpha = alpha_table[index_a]; const int beta = beta_table[clip( qp + h->slice_beta_offset, 0, 51 )]; const int pix_next = stride; for( i = 0; i < 4; i++ ) { if( bS[i] == 0 ) { pix += 2; continue; } if( bS[i] < 4 ) { int tc = tc0_table[index_a][bS[i] - 1] + 1; /* 2px edge length (see deblocking_filter_edgecv) */ for( d = 0; d < 2; d++ ) { const int p0 = pix[-1*pix_next]; const int p1 = pix[-2*pix_next]; const int q0 = pix[0]; const int q1 = pix[1*pix_next]; if( ABS( p0 - q0 ) < alpha && ABS( p1 - p0 ) < beta && ABS( q1 - q0 ) < beta ) { int i_delta = clip( (((q0 - p0 ) << 2) + (p1 - q1) + 4) >> 3, -tc, tc ); pix[-pix_next] = clip_uint8( p0 + i_delta ); /* p0' */ pix[0] = clip_uint8( q0 - i_delta ); /* q0' */ } pix++; } }else{ /* 2px edge length (see deblocking_filter_edgecv) */ for( d = 0; d < 2; d++ ) { const int p0 = pix[-1*pix_next]; const int p1 = pix[-2*pix_next]; const int q0 = pix[0]; const int q1 = pix[1*pix_next]; if( ABS( p0 - q0 ) < alpha && ABS( p1 - p0 ) < beta && ABS( q1 - q0 ) < beta ) { pix[-pix_next] = ( 2*p1 + p0 + q1 + 2 ) >> 2; /* p0' */ pix[0] = ( 2*q1 + q0 + p1 + 2 ) >> 2; /* q0' */ } pix++; } } } } static void filter_mb( H264Context *h, int mb_x, int mb_y, uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr) { MpegEncContext * const s = &h->s; const int mb_xy= mb_x + mb_y*s->mb_stride; int linesize, uvlinesize; int dir; /* FIXME Implement deblocking filter for field MB */ if( h->sps.mb_aff ) { return; } linesize = s->linesize; uvlinesize = s->uvlinesize; /* dir : 0 -> vertical edge, 1 -> horizontal edge */ for( dir = 0; dir < 2; dir++ ) { int edge; const int mbm_xy = dir == 0 ? mb_xy -1 : mb_xy - s->mb_stride; int start = h->slice_table[mbm_xy] == 255 ? 1 : 0; if (h->deblocking_filter==2 && h->slice_table[mbm_xy] != h->slice_table[mb_xy]) start = 1; /* Calculate bS */ for( edge = start; edge < 4; edge++ ) { /* mbn_xy: neighbour macroblock (how that works for field ?) */ int mbn_xy = edge > 0 ? mb_xy : mbm_xy; int bS[4]; int qp; if( IS_INTRA( s->current_picture.mb_type[mb_xy] ) || IS_INTRA( s->current_picture.mb_type[mbn_xy] ) ) { bS[0] = bS[1] = bS[2] = bS[3] = ( edge == 0 ? 4 : 3 ); } else { int i; for( i = 0; i < 4; i++ ) { int x = dir == 0 ? edge : i; int y = dir == 0 ? i : edge; int b_idx= 8 + 4 + x + 8*y; int bn_idx= b_idx - (dir ? 8:1); if( h->non_zero_count_cache[b_idx] != 0 || h->non_zero_count_cache[bn_idx] != 0 ) { bS[i] = 2; } else if( h->slice_type == P_TYPE ) { if( h->ref_cache[0][b_idx] != h->ref_cache[0][bn_idx] || ABS( h->mv_cache[0][b_idx][0] - h->mv_cache[0][bn_idx][0] ) >= 4 || ABS( h->mv_cache[0][b_idx][1] - h->mv_cache[0][bn_idx][1] ) >= 4 ) bS[i] = 1; else bS[i] = 0; } else { /* FIXME Add support for B frame */ return; } } if(bS[0]+bS[1]+bS[2]+bS[3] == 0) continue; } /* Filter edge */ qp = ( s->qscale + s->current_picture.qscale_table[mbn_xy] + 1 ) >> 1; //tprintf("filter mb:%d/%d dir:%d edge:%d, QPy:%d, QPc:%d, QPcn:%d\n", mb_x, mb_y, dir, edge, qp, h->chroma_qp, s->current_picture.qscale_table[mbn_xy]); if( dir == 0 ) { filter_mb_edgev( h, &img_y[4*edge], linesize, bS, qp ); if( (edge&1) == 0 ) { int chroma_qp = ( h->chroma_qp + get_chroma_qp( h, s->current_picture.qscale_table[mbn_xy] ) + 1 ) >> 1; filter_mb_edgecv( h, &img_cb[2*edge], uvlinesize, bS, chroma_qp ); filter_mb_edgecv( h, &img_cr[2*edge], uvlinesize, bS, chroma_qp ); } } else { filter_mb_edgeh( h, &img_y[4*edge*linesize], linesize, bS, qp ); if( (edge&1) == 0 ) { int chroma_qp = ( h->chroma_qp + get_chroma_qp( h, s->current_picture.qscale_table[mbn_xy] ) + 1 ) >> 1; filter_mb_edgech( h, &img_cb[2*edge*uvlinesize], uvlinesize, bS, chroma_qp ); filter_mb_edgech( h, &img_cr[2*edge*uvlinesize], uvlinesize, bS, chroma_qp ); } } } } } static int decode_slice(H264Context *h){ MpegEncContext * const s = &h->s; const int part_mask= s->partitioned_frame ? (AC_END|AC_ERROR) : 0x7F; s->mb_skip_run= -1; if( h->pps.cabac ) { int i; /* realign */ align_get_bits( &s->gb ); /* init cabac */ ff_init_cabac_states( &h->cabac, ff_h264_lps_range, ff_h264_mps_state, ff_h264_lps_state, 64 ); ff_init_cabac_decoder( &h->cabac, s->gb.buffer + get_bits_count(&s->gb)/8, ( s->gb.size_in_bits - get_bits_count(&s->gb) + 7)/8); /* calculate pre-state */ for( i= 0; i < 399; i++ ) { int pre; if( h->slice_type == I_TYPE ) pre = clip( ((cabac_context_init_I[i][0] * s->qscale) >>4 ) + cabac_context_init_I[i][1], 1, 126 ); else pre = clip( ((cabac_context_init_PB[h->cabac_init_idc][i][0] * s->qscale) >>4 ) + cabac_context_init_PB[h->cabac_init_idc][i][1], 1, 126 ); if( pre <= 63 ) h->cabac_state[i] = 2 * ( 63 - pre ) + 0; else h->cabac_state[i] = 2 * ( pre - 64 ) + 1; } for(;;){ int ret = decode_mb_cabac(h); int eos = get_cabac_terminate( &h->cabac ); /* End of Slice flag */ if(ret>=0) hl_decode_mb(h); /* XXX: useless as decode_mb_cabac it doesn't support that ... */ if( ret >= 0 && h->sps.mb_aff ) { //FIXME optimal? or let mb_decode decode 16x32 ? s->mb_y++; if(ret>=0) ret = decode_mb_cabac(h); eos = get_cabac_terminate( &h->cabac ); hl_decode_mb(h); s->mb_y--; } if( ret < 0 || h->cabac.bytestream > h->cabac.bytestream_end + 1) { av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y); ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_ERROR|DC_ERROR|MV_ERROR)&part_mask); return -1; } if( ++s->mb_x >= s->mb_width ) { s->mb_x = 0; ff_draw_horiz_band(s, 16*s->mb_y, 16); ++s->mb_y; } if( eos || s->mb_y >= s->mb_height ) { tprintf("slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits); ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, (AC_END|DC_END|MV_END)&part_mask); return 0; } #if 0 /* TODO test over-reading in cabac code */ else if( read too much in h->cabac ) { ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_ERROR|DC_ERROR|MV_ERROR)&part_mask); return -1; } #endif } } else { for(;;){ int ret = decode_mb_cavlc(h); if(ret>=0) hl_decode_mb(h); if(ret>=0 && h->sps.mb_aff){ //FIXME optimal? or let mb_decode decode 16x32 ? s->mb_y++; ret = decode_mb_cavlc(h); if(ret>=0) hl_decode_mb(h); s->mb_y--; } if(ret<0){ av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y); ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_ERROR|DC_ERROR|MV_ERROR)&part_mask); return -1; } if(++s->mb_x >= s->mb_width){ s->mb_x=0; ff_draw_horiz_band(s, 16*s->mb_y, 16); if(++s->mb_y >= s->mb_height){ tprintf("slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits); if(get_bits_count(&s->gb) == s->gb.size_in_bits ) { ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, (AC_END|DC_END|MV_END)&part_mask); return 0; }else{ ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END)&part_mask); return -1; } } } if(get_bits_count(&s->gb) >= s->gb.size_in_bits && s->mb_skip_run<=0){ tprintf("slice end %d %d\n", get_bits_count(&s->gb), s->gb.size_in_bits); if(get_bits_count(&s->gb) == s->gb.size_in_bits ){ ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, (AC_END|DC_END|MV_END)&part_mask); return 0; }else{ ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_ERROR|DC_ERROR|MV_ERROR)&part_mask); return -1; } } } } #if 0 for(;s->mb_y < s->mb_height; s->mb_y++){ for(;s->mb_x < s->mb_width; s->mb_x++){ int ret= decode_mb(h); hl_decode_mb(h); if(ret<0){ fprintf(stderr, "error while decoding MB %d %d\n", s->mb_x, s->mb_y); ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_ERROR|DC_ERROR|MV_ERROR)&part_mask); return -1; } if(++s->mb_x >= s->mb_width){ s->mb_x=0; if(++s->mb_y >= s->mb_height){ if(get_bits_count(s->gb) == s->gb.size_in_bits){ ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, (AC_END|DC_END|MV_END)&part_mask); return 0; }else{ ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END)&part_mask); return -1; } } } if(get_bits_count(s->?gb) >= s->gb?.size_in_bits){ if(get_bits_count(s->gb) == s->gb.size_in_bits){ ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, (AC_END|DC_END|MV_END)&part_mask); return 0; }else{ ff_er_add_slice(s, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, (AC_ERROR|DC_ERROR|MV_ERROR)&part_mask); return -1; } } } s->mb_x=0; ff_draw_horiz_band(s, 16*s->mb_y, 16); } #endif return -1; //not reached } static inline int decode_vui_parameters(H264Context *h, SPS *sps){ MpegEncContext * const s = &h->s; int aspect_ratio_info_present_flag, aspect_ratio_idc; aspect_ratio_info_present_flag= get_bits1(&s->gb); if( aspect_ratio_info_present_flag ) { aspect_ratio_idc= get_bits(&s->gb, 8); if( aspect_ratio_idc == EXTENDED_SAR ) { sps->sar.num= get_bits(&s->gb, 16); sps->sar.den= get_bits(&s->gb, 16); }else if(aspect_ratio_idc < 16){ sps->sar= pixel_aspect[aspect_ratio_idc]; }else{ av_log(h->s.avctx, AV_LOG_ERROR, "illegal aspect ratio\n"); return -1; } }else{ sps->sar.num= sps->sar.den= 0; } // s->avctx->aspect_ratio= sar_width*s->width / (float)(s->height*sar_height); if(get_bits1(&s->gb)){ /* overscan_info_present_flag */ get_bits1(&s->gb); /* overscan_appropriate_flag */ } if(get_bits1(&s->gb)){ /* video_signal_type_present_flag */ get_bits(&s->gb, 3); /* video_format */ get_bits1(&s->gb); /* video_full_range_flag */ if(get_bits1(&s->gb)){ /* colour_description_present_flag */ get_bits(&s->gb, 8); /* colour_primaries */ get_bits(&s->gb, 8); /* transfer_characteristics */ get_bits(&s->gb, 8); /* matrix_coefficients */ } } if(get_bits1(&s->gb)){ /* chroma_location_info_present_flag */ get_ue_golomb(&s->gb); /* chroma_sample_location_type_top_field */ get_ue_golomb(&s->gb); /* chroma_sample_location_type_bottom_field */ } sps->timing_info_present_flag = get_bits1(&s->gb); if(sps->timing_info_present_flag){ sps->num_units_in_tick = get_bits_long(&s->gb, 32); sps->time_scale = get_bits_long(&s->gb, 32); sps->fixed_frame_rate_flag = get_bits1(&s->gb); } #if 0 | nal_hrd_parameters_present_flag |0 |u(1) | | if( nal_hrd_parameters_present_flag = = 1) | | | | hrd_parameters( ) | | | | vcl_hrd_parameters_present_flag |0 |u(1) | | if( vcl_hrd_parameters_present_flag = = 1) | | | | hrd_parameters( ) | | | | if( ( nal_hrd_parameters_present_flag = = 1 | || | | | | | | |( vcl_hrd_parameters_present_flag = = 1 ) ) | | | | low_delay_hrd_flag |0 |u(1) | | bitstream_restriction_flag |0 |u(1) | | if( bitstream_restriction_flag ) { |0 |u(1) | | motion_vectors_over_pic_boundaries_flag |0 |u(1) | | max_bytes_per_pic_denom |0 |ue(v) | | max_bits_per_mb_denom |0 |ue(v) | | log2_max_mv_length_horizontal |0 |ue(v) | | log2_max_mv_length_vertical |0 |ue(v) | | num_reorder_frames |0 |ue(v) | | max_dec_frame_buffering |0 |ue(v) | | } | | | |} | | | #endif return 0; } static inline int decode_seq_parameter_set(H264Context *h){ MpegEncContext * const s = &h->s; int profile_idc, level_idc; int sps_id, i; SPS *sps; profile_idc= get_bits(&s->gb, 8); get_bits1(&s->gb); //constraint_set0_flag get_bits1(&s->gb); //constraint_set1_flag get_bits1(&s->gb); //constraint_set2_flag get_bits1(&s->gb); //constraint_set3_flag get_bits(&s->gb, 4); // reserved level_idc= get_bits(&s->gb, 8); sps_id= get_ue_golomb(&s->gb); sps= &h->sps_buffer[ sps_id ]; sps->profile_idc= profile_idc; sps->level_idc= level_idc; sps->log2_max_frame_num= get_ue_golomb(&s->gb) + 4; sps->poc_type= get_ue_golomb(&s->gb); if(sps->poc_type == 0){ //FIXME #define sps->log2_max_poc_lsb= get_ue_golomb(&s->gb) + 4; } else if(sps->poc_type == 1){//FIXME #define sps->delta_pic_order_always_zero_flag= get_bits1(&s->gb); sps->offset_for_non_ref_pic= get_se_golomb(&s->gb); sps->offset_for_top_to_bottom_field= get_se_golomb(&s->gb); sps->poc_cycle_length= get_ue_golomb(&s->gb); for(i=0; ipoc_cycle_length; i++) sps->offset_for_ref_frame[i]= get_se_golomb(&s->gb); } if(sps->poc_type > 2){ av_log(h->s.avctx, AV_LOG_ERROR, "illegal POC type %d\n", sps->poc_type); return -1; } sps->ref_frame_count= get_ue_golomb(&s->gb); if(sps->ref_frame_count > MAX_PICTURE_COUNT-2){ av_log(h->s.avctx, AV_LOG_ERROR, "too many reference frames\n"); } sps->gaps_in_frame_num_allowed_flag= get_bits1(&s->gb); sps->mb_width= get_ue_golomb(&s->gb) + 1; sps->mb_height= get_ue_golomb(&s->gb) + 1; if((unsigned)sps->mb_width >= INT_MAX/16 || (unsigned)sps->mb_height >= INT_MAX/16 || avcodec_check_dimensions(NULL, 16*sps->mb_width, 16*sps->mb_height)) return -1; sps->frame_mbs_only_flag= get_bits1(&s->gb); if(!sps->frame_mbs_only_flag) sps->mb_aff= get_bits1(&s->gb); else sps->mb_aff= 0; sps->direct_8x8_inference_flag= get_bits1(&s->gb); sps->crop= get_bits1(&s->gb); if(sps->crop){ sps->crop_left = get_ue_golomb(&s->gb); sps->crop_right = get_ue_golomb(&s->gb); sps->crop_top = get_ue_golomb(&s->gb); sps->crop_bottom= get_ue_golomb(&s->gb); if(sps->crop_left || sps->crop_top){ av_log(h->s.avctx, AV_LOG_ERROR, "insane cropping not completly supported, this could look slightly wrong ...\n"); } }else{ sps->crop_left = sps->crop_right = sps->crop_top = sps->crop_bottom= 0; } sps->vui_parameters_present_flag= get_bits1(&s->gb); if( sps->vui_parameters_present_flag ) decode_vui_parameters(h, sps); if(s->avctx->debug&FF_DEBUG_PICT_INFO){ av_log(h->s.avctx, AV_LOG_DEBUG, "sps:%d profile:%d/%d poc:%d ref:%d %dx%d %s %s crop:%d/%d/%d/%d %s\n", sps_id, sps->profile_idc, sps->level_idc, sps->poc_type, sps->ref_frame_count, sps->mb_width, sps->mb_height, sps->frame_mbs_only_flag ? "FRM" : (sps->mb_aff ? "MB-AFF" : "PIC-AFF"), sps->direct_8x8_inference_flag ? "8B8" : "", sps->crop_left, sps->crop_right, sps->crop_top, sps->crop_bottom, sps->vui_parameters_present_flag ? "VUI" : "" ); } return 0; } static inline int decode_picture_parameter_set(H264Context *h){ MpegEncContext * const s = &h->s; int pps_id= get_ue_golomb(&s->gb); PPS *pps= &h->pps_buffer[pps_id]; pps->sps_id= get_ue_golomb(&s->gb); pps->cabac= get_bits1(&s->gb); pps->pic_order_present= get_bits1(&s->gb); pps->slice_group_count= get_ue_golomb(&s->gb) + 1; if(pps->slice_group_count > 1 ){ pps->mb_slice_group_map_type= get_ue_golomb(&s->gb); av_log(h->s.avctx, AV_LOG_ERROR, "FMO not supported\n"); switch(pps->mb_slice_group_map_type){ case 0: #if 0 | for( i = 0; i <= num_slice_groups_minus1; i++ ) | | | | run_length[ i ] |1 |ue(v) | #endif break; case 2: #if 0 | for( i = 0; i < num_slice_groups_minus1; i++ ) | | | |{ | | | | top_left_mb[ i ] |1 |ue(v) | | bottom_right_mb[ i ] |1 |ue(v) | | } | | | #endif break; case 3: case 4: case 5: #if 0 | slice_group_change_direction_flag |1 |u(1) | | slice_group_change_rate_minus1 |1 |ue(v) | #endif break; case 6: #if 0 | slice_group_id_cnt_minus1 |1 |ue(v) | | for( i = 0; i <= slice_group_id_cnt_minus1; i++ | | | |) | | | | slice_group_id[ i ] |1 |u(v) | #endif break; } } pps->ref_count[0]= get_ue_golomb(&s->gb) + 1; pps->ref_count[1]= get_ue_golomb(&s->gb) + 1; if(pps->ref_count[0] > 32 || pps->ref_count[1] > 32){ av_log(h->s.avctx, AV_LOG_ERROR, "reference overflow (pps)\n"); return -1; } pps->weighted_pred= get_bits1(&s->gb); pps->weighted_bipred_idc= get_bits(&s->gb, 2); pps->init_qp= get_se_golomb(&s->gb) + 26; pps->init_qs= get_se_golomb(&s->gb) + 26; pps->chroma_qp_index_offset= get_se_golomb(&s->gb); pps->deblocking_filter_parameters_present= get_bits1(&s->gb); pps->constrained_intra_pred= get_bits1(&s->gb); pps->redundant_pic_cnt_present = get_bits1(&s->gb); if(s->avctx->debug&FF_DEBUG_PICT_INFO){ av_log(h->s.avctx, AV_LOG_DEBUG, "pps:%d sps:%d %s slice_groups:%d ref:%d/%d %s qp:%d/%d/%d %s %s %s\n", pps_id, pps->sps_id, pps->cabac ? "CABAC" : "CAVLC", pps->slice_group_count, pps->ref_count[0], pps->ref_count[1], pps->weighted_pred ? "weighted" : "", pps->init_qp, pps->init_qs, pps->chroma_qp_index_offset, pps->deblocking_filter_parameters_present ? "LPAR" : "", pps->constrained_intra_pred ? "CONSTR" : "", pps->redundant_pic_cnt_present ? "REDU" : "" ); } return 0; } /** * finds the end of the current frame in the bitstream. * @return the position of the first byte of the next frame, or -1 */ static int find_frame_end(H264Context *h, const uint8_t *buf, int buf_size){ int i; uint32_t state; ParseContext *pc = &(h->s.parse_context); //printf("first %02X%02X%02X%02X\n", buf[0], buf[1],buf[2],buf[3]); // mb_addr= pc->mb_addr - 1; state= pc->state; for(i=0; i<=buf_size; i++){ if((state&0xFFFFFF1F) == 0x101 || (state&0xFFFFFF1F) == 0x102 || (state&0xFFFFFF1F) == 0x105){ tprintf("find_frame_end new startcode = %08x, frame_start_found = %d, pos = %d\n", state, pc->frame_start_found, i); if(pc->frame_start_found){ // If there isn't one more byte in the buffer // the test on first_mb_in_slice cannot be done yet // do it at next call. if (i >= buf_size) break; if (buf[i] & 0x80) { // first_mb_in_slice is 0, probably the first nal of a new // slice tprintf("find_frame_end frame_end_found, state = %08x, pos = %d\n", state, i); pc->state=-1; pc->frame_start_found= 0; return i-4; } } pc->frame_start_found = 1; } if (istate= state; return END_NOT_FOUND; } static int h264_parse(AVCodecParserContext *s, AVCodecContext *avctx, uint8_t **poutbuf, int *poutbuf_size, const uint8_t *buf, int buf_size) { H264Context *h = s->priv_data; ParseContext *pc = &h->s.parse_context; int next; next= find_frame_end(h, buf, buf_size); if (ff_combine_frame(pc, next, (uint8_t **)&buf, &buf_size) < 0) { *poutbuf = NULL; *poutbuf_size = 0; return buf_size; } *poutbuf = (uint8_t *)buf; *poutbuf_size = buf_size; return next; } static int decode_nal_units(H264Context *h, uint8_t *buf, int buf_size){ MpegEncContext * const s = &h->s; AVCodecContext * const avctx= s->avctx; int buf_index=0; #if 0 int i; for(i=0; i<32; i++){ printf("%X ", buf[i]); } #endif h->slice_num = 0; for(;;){ int consumed; int dst_length; int bit_length; uint8_t *ptr; int i, nalsize = 0; if(h->is_avc) { if(buf_index >= buf_size) break; nalsize = 0; for(i = 0; i < h->nal_length_size; i++) nalsize = (nalsize << 8) | buf[buf_index++]; } else { // start code prefix search for(; buf_index + 3 < buf_size; buf_index++){ // this should allways succeed in the first iteration if(buf[buf_index] == 0 && buf[buf_index+1] == 0 && buf[buf_index+2] == 1) break; } if(buf_index+3 >= buf_size) break; buf_index+=3; } ptr= decode_nal(h, buf + buf_index, &dst_length, &consumed, h->is_avc ? nalsize : buf_size - buf_index); if(ptr[dst_length - 1] == 0) dst_length--; bit_length= 8*dst_length - decode_rbsp_trailing(ptr + dst_length - 1); if(s->avctx->debug&FF_DEBUG_STARTCODE){ av_log(h->s.avctx, AV_LOG_DEBUG, "NAL %d at %d/%d length %d\n", h->nal_unit_type, buf_index, buf_size, dst_length); } if (h->is_avc && (nalsize != consumed)) av_log(h->s.avctx, AV_LOG_ERROR, "AVC: Consumed only %d bytes instead of %d\n", consumed, nalsize); buf_index += consumed; if( s->hurry_up == 1 && h->nal_ref_idc == 0 ) continue; switch(h->nal_unit_type){ case NAL_IDR_SLICE: idr(h); //FIXME ensure we dont loose some frames if there is reordering case NAL_SLICE: init_get_bits(&s->gb, ptr, bit_length); h->intra_gb_ptr= h->inter_gb_ptr= &s->gb; s->data_partitioning = 0; if(decode_slice_header(h) < 0) return -1; if(h->redundant_pic_count==0 && s->hurry_up < 5 ) decode_slice(h); break; case NAL_DPA: init_get_bits(&s->gb, ptr, bit_length); h->intra_gb_ptr= h->inter_gb_ptr= NULL; s->data_partitioning = 1; if(decode_slice_header(h) < 0) return -1; break; case NAL_DPB: init_get_bits(&h->intra_gb, ptr, bit_length); h->intra_gb_ptr= &h->intra_gb; break; case NAL_DPC: init_get_bits(&h->inter_gb, ptr, bit_length); h->inter_gb_ptr= &h->inter_gb; if(h->redundant_pic_count==0 && h->intra_gb_ptr && s->data_partitioning && s->hurry_up < 5 ) decode_slice(h); break; case NAL_SEI: break; case NAL_SPS: init_get_bits(&s->gb, ptr, bit_length); decode_seq_parameter_set(h); if(s->flags& CODEC_FLAG_LOW_DELAY) s->low_delay=1; avctx->has_b_frames= !s->low_delay; break; case NAL_PPS: init_get_bits(&s->gb, ptr, bit_length); decode_picture_parameter_set(h); break; case NAL_PICTURE_DELIMITER: break; case NAL_FILTER_DATA: break; default: av_log(avctx, AV_LOG_ERROR, "Unknown NAL code: %d\n", h->nal_unit_type); } //FIXME move after where irt is set s->current_picture.pict_type= s->pict_type; s->current_picture.key_frame= s->pict_type == I_TYPE; } if(!s->current_picture_ptr) return buf_index; //no frame h->prev_frame_num_offset= h->frame_num_offset; h->prev_frame_num= h->frame_num; if(s->current_picture_ptr->reference){ h->prev_poc_msb= h->poc_msb; h->prev_poc_lsb= h->poc_lsb; } if(s->current_picture_ptr->reference) execute_ref_pic_marking(h, h->mmco, h->mmco_index); ff_er_frame_end(s); MPV_frame_end(s); return buf_index; } /** * retunrs the number of bytes consumed for building the current frame */ static int get_consumed_bytes(MpegEncContext *s, int pos, int buf_size){ if(s->flags&CODEC_FLAG_TRUNCATED){ pos -= s->parse_context.last_index; if(pos<0) pos=0; // FIXME remove (uneeded?) return pos; }else{ if(pos==0) pos=1; //avoid infinite loops (i doubt thats needed but ...) if(pos+10>buf_size) pos=buf_size; // oops ;) return pos; } } static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, uint8_t *buf, int buf_size) { H264Context *h = avctx->priv_data; MpegEncContext *s = &h->s; AVFrame *pict = data; int buf_index; s->flags= avctx->flags; s->flags2= avctx->flags2; /* no supplementary picture */ if (buf_size == 0) { return 0; } if(s->flags&CODEC_FLAG_TRUNCATED){ int next= find_frame_end(h, buf, buf_size); if( ff_combine_frame(&s->parse_context, next, &buf, &buf_size) < 0 ) return buf_size; //printf("next:%d buf_size:%d last_index:%d\n", next, buf_size, s->parse_context.last_index); } if(h->is_avc && !h->got_avcC) { int i, cnt, nalsize; unsigned char *p = avctx->extradata; if(avctx->extradata_size < 7) { av_log(avctx, AV_LOG_ERROR, "avcC too short\n"); return -1; } if(*p != 1) { av_log(avctx, AV_LOG_ERROR, "Unknown avcC version %d\n", *p); return -1; } /* sps and pps in the avcC always have length coded with 2 bytes, so put a fake nal_length_size = 2 while parsing them */ h->nal_length_size = 2; // Decode sps from avcC cnt = *(p+5) & 0x1f; // Number of sps p += 6; for (i = 0; i < cnt; i++) { nalsize = BE_16(p) + 2; if(decode_nal_units(h, p, nalsize) != nalsize) { av_log(avctx, AV_LOG_ERROR, "Decoding sps %d from avcC failed\n", i); return -1; } p += nalsize; } // Decode pps from avcC cnt = *(p++); // Number of pps for (i = 0; i < cnt; i++) { nalsize = BE_16(p) + 2; if(decode_nal_units(h, p, nalsize) != nalsize) { av_log(avctx, AV_LOG_ERROR, "Decoding pps %d from avcC failed\n", i); return -1; } p += nalsize; } // Now store right nal length size, that will be use to parse all other nals h->nal_length_size = ((*(((char*)(avctx->extradata))+4))&0x03)+1; // Do not reparse avcC h->got_avcC = 1; } if(!h->is_avc && s->avctx->extradata_size && s->picture_number==0){ if(0 < decode_nal_units(h, s->avctx->extradata, s->avctx->extradata_size) ) return -1; } buf_index=decode_nal_units(h, buf, buf_size); if(buf_index < 0) return -1; //FIXME do something with unavailable reference frames // if(ret==FRAME_SKIPED) return get_consumed_bytes(s, buf_index, buf_size); if(!s->current_picture_ptr){ av_log(h->s.avctx, AV_LOG_DEBUG, "error, NO frame\n"); return -1; } { //#define DECODE_ORDER Picture *out = s->current_picture_ptr; #ifndef DECODE_ORDER /* Sort B-frames into display order * FIXME doesn't allow for multiple delayed frames */ Picture *cur = s->current_picture_ptr; Picture *prev = h->delayed_pic[0]; if(s->low_delay && (cur->pict_type == B_TYPE || (!h->sps.gaps_in_frame_num_allowed_flag && prev && cur->poc - prev->poc > 2))){ s->low_delay = 0; s->avctx->has_b_frames = 1; if(prev && prev->poc > cur->poc) // too late to display this frame cur = prev; } if(s->low_delay || !prev || cur->pict_type == B_TYPE) out = cur; else out = prev; if(s->low_delay || !prev || out == prev){ if(prev && prev->reference == 1) prev->reference = 0; h->delayed_pic[0] = cur; } #endif *pict= *(AVFrame*)out; } ff_print_debug_info(s, pict); assert(pict->data[0]); //printf("out %d\n", (int)pict->data[0]); #if 0 //? /* Return the Picture timestamp as the frame number */ /* we substract 1 because it is added on utils.c */ avctx->frame_number = s->picture_number - 1; #endif #if 0 /* dont output the last pic after seeking */ if(s->last_picture_ptr || s->low_delay) //Note this isnt a issue as a IDR pic should flush the buffers #endif *data_size = sizeof(AVFrame); return get_consumed_bytes(s, buf_index, buf_size); } #if 0 static inline void fill_mb_avail(H264Context *h){ MpegEncContext * const s = &h->s; const int mb_xy= s->mb_x + s->mb_y*s->mb_stride; if(s->mb_y){ h->mb_avail[0]= s->mb_x && h->slice_table[mb_xy - s->mb_stride - 1] == h->slice_num; h->mb_avail[1]= h->slice_table[mb_xy - s->mb_stride ] == h->slice_num; h->mb_avail[2]= s->mb_x+1 < s->mb_width && h->slice_table[mb_xy - s->mb_stride + 1] == h->slice_num; }else{ h->mb_avail[0]= h->mb_avail[1]= h->mb_avail[2]= 0; } h->mb_avail[3]= s->mb_x && h->slice_table[mb_xy - 1] == h->slice_num; h->mb_avail[4]= 1; //FIXME move out h->mb_avail[5]= 0; //FIXME move out } #endif #if 0 //selftest #define COUNT 8000 #define SIZE (COUNT*40) int main(){ int i; uint8_t temp[SIZE]; PutBitContext pb; GetBitContext gb; // int int_temp[10000]; DSPContext dsp; AVCodecContext avctx; dsputil_init(&dsp, &avctx); init_put_bits(&pb, temp, SIZE); printf("testing unsigned exp golomb\n"); for(i=0; idsp.h264_idct_add(ref, block, 4); /* for(j=0; j<16; j++){ printf("%d ", ref[j]); } printf("\n");*/ for(j=0; j<16; j++){ int diff= ABS(src[j] - ref[j]); error+= diff*diff; max_error= FFMAX(max_error, diff); } } printf("error=%f max_error=%d\n", ((float)error)/COUNT/16, (int)max_error ); #if 0 printf("testing quantizer\n"); for(qp=0; qp<52; qp++){ for(i=0; i<16; i++) src1_block[i]= src2_block[i]= random()%255; } #endif printf("Testing NAL layer\n"); uint8_t bitstream[COUNT]; uint8_t nal[COUNT*2]; H264Context h; memset(&h, 0, sizeof(H264Context)); for(i=0; ipriv_data; MpegEncContext *s = &h->s; free_tables(h); //FIXME cleanup init stuff perhaps MPV_common_end(s); // memset(h, 0, sizeof(H264Context)); return 0; } AVCodec h264_decoder = { "h264", CODEC_TYPE_VIDEO, CODEC_ID_H264, sizeof(H264Context), decode_init, NULL, decode_end, decode_frame, /*CODEC_CAP_DRAW_HORIZ_BAND |*/ CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY, }; AVCodecParser h264_parser = { { CODEC_ID_H264 }, sizeof(H264Context), NULL, h264_parse, ff_parse_close, }; #include "svq3.c"