/* * Generic DCT based hybrid video encoder * Copyright (c) 2000, 2001, 2002 Fabrice Bellard * Copyright (c) 2002-2004 Michael Niedermayer * * This file is part of FFmpeg. * * FFmpeg 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 2.1 of the License, or (at your option) any later version. * * FFmpeg 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 FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /** * @file libavcodec/mpegvideo.h * mpegvideo header. */ #ifndef AVCODEC_MPEGVIDEO_H #define AVCODEC_MPEGVIDEO_H #include "dsputil.h" #include "get_bits.h" #include "put_bits.h" #include "ratecontrol.h" #include "parser.h" #include "mpeg12data.h" #include "rl.h" #define FRAME_SKIPPED 100 ///< return value for header parsers if frame is not coded enum OutputFormat { FMT_MPEG1, FMT_H261, FMT_H263, FMT_MJPEG, FMT_H264, }; #define MPEG_BUF_SIZE (16 * 1024) #define QMAT_SHIFT_MMX 16 #define QMAT_SHIFT 22 #define MAX_FCODE 7 #define MAX_MV 2048 #define MAX_THREADS 16 #define MAX_PICTURE_COUNT 32 #define ME_MAP_SIZE 64 #define ME_MAP_SHIFT 3 #define ME_MAP_MV_BITS 11 #define MAX_MB_BYTES (30*16*16*3/8 + 120) #define INPLACE_OFFSET 16 /* Start codes. */ #define SEQ_END_CODE 0x000001b7 #define SEQ_START_CODE 0x000001b3 #define GOP_START_CODE 0x000001b8 #define PICTURE_START_CODE 0x00000100 #define SLICE_MIN_START_CODE 0x00000101 #define SLICE_MAX_START_CODE 0x000001af #define EXT_START_CODE 0x000001b5 #define USER_START_CODE 0x000001b2 /** * Picture. */ typedef struct Picture{ FF_COMMON_FRAME /** * halfpel luma planes. */ uint8_t *interpolated[3]; int16_t (*motion_val_base[2])[2]; uint32_t *mb_type_base; #define MB_TYPE_INTRA MB_TYPE_INTRA4x4 //default mb_type if there is just one type #define IS_INTRA4x4(a) ((a)&MB_TYPE_INTRA4x4) #define IS_INTRA16x16(a) ((a)&MB_TYPE_INTRA16x16) #define IS_PCM(a) ((a)&MB_TYPE_INTRA_PCM) #define IS_INTRA(a) ((a)&7) #define IS_INTER(a) ((a)&(MB_TYPE_16x16|MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_8x8)) #define IS_SKIP(a) ((a)&MB_TYPE_SKIP) #define IS_INTRA_PCM(a) ((a)&MB_TYPE_INTRA_PCM) #define IS_INTERLACED(a) ((a)&MB_TYPE_INTERLACED) #define IS_DIRECT(a) ((a)&MB_TYPE_DIRECT2) #define IS_GMC(a) ((a)&MB_TYPE_GMC) #define IS_16X16(a) ((a)&MB_TYPE_16x16) #define IS_16X8(a) ((a)&MB_TYPE_16x8) #define IS_8X16(a) ((a)&MB_TYPE_8x16) #define IS_8X8(a) ((a)&MB_TYPE_8x8) #define IS_SUB_8X8(a) ((a)&MB_TYPE_16x16) //note reused #define IS_SUB_8X4(a) ((a)&MB_TYPE_16x8) //note reused #define IS_SUB_4X8(a) ((a)&MB_TYPE_8x16) //note reused #define IS_SUB_4X4(a) ((a)&MB_TYPE_8x8) //note reused #define IS_ACPRED(a) ((a)&MB_TYPE_ACPRED) #define IS_QUANT(a) ((a)&MB_TYPE_QUANT) #define IS_DIR(a, part, list) ((a) & (MB_TYPE_P0L0<<((part)+2*(list)))) #define USES_LIST(a, list) ((a) & ((MB_TYPE_P0L0|MB_TYPE_P1L0)<<(2*(list)))) ///< does this mb use listX, note does not work if subMBs #define HAS_CBP(a) ((a)&MB_TYPE_CBP) int field_poc[2]; ///< h264 top/bottom POC int poc; ///< h264 frame POC int frame_num; ///< h264 frame_num (raw frame_num from slice header) int mmco_reset; ///< h264 MMCO_RESET set this 1. Reordering code must not mix pictures before and after MMCO_RESET. int pic_id; /**< h264 pic_num (short -> no wrap version of pic_num, pic_num & max_pic_num; long -> long_pic_num) */ int long_ref; ///< 1->long term reference 0->short term reference int ref_poc[2][2][16]; ///< h264 POCs of the frames used as reference (FIXME need per slice) int ref_count[2][2]; ///< number of entries in ref_poc (FIXME need per slice) int mbaff; ///< h264 1 -> MBAFF frame 0-> not MBAFF int mb_var_sum; ///< sum of MB variance for current frame int mc_mb_var_sum; ///< motion compensated MB variance for current frame uint16_t *mb_var; ///< Table for MB variances uint16_t *mc_mb_var; ///< Table for motion compensated MB variances uint8_t *mb_mean; ///< Table for MB luminance int32_t *mb_cmp_score; ///< Table for MB cmp scores, for mb decision FIXME remove int b_frame_score; /* */ } Picture; struct MpegEncContext; /** * Motion estimation context. */ typedef struct MotionEstContext{ AVCodecContext *avctx; int skip; ///< set if ME is skipped for the current MB int co_located_mv[4][2]; ///< mv from last P-frame for direct mode ME int direct_basis_mv[4][2]; uint8_t *scratchpad; ///< data area for the ME algo, so that the ME does not need to malloc/free uint8_t *best_mb; uint8_t *temp_mb[2]; uint8_t *temp; int best_bits; uint32_t *map; ///< map to avoid duplicate evaluations uint32_t *score_map; ///< map to store the scores int map_generation; int pre_penalty_factor; int penalty_factor; /*!< an estimate of the bits required to code a given mv value, e.g. (1,0) takes more bits than (0,0). We have to estimate whether any reduction in residual is worth the extra bits. */ int sub_penalty_factor; int mb_penalty_factor; int flags; int sub_flags; int mb_flags; int pre_pass; ///< = 1 for the pre pass int dia_size; int xmin; int xmax; int ymin; int ymax; int pred_x; int pred_y; uint8_t *src[4][4]; uint8_t *ref[4][4]; int stride; int uvstride; /* temp variables for picture complexity calculation */ int mc_mb_var_sum_temp; int mb_var_sum_temp; int scene_change_score; /* cmp, chroma_cmp;*/ op_pixels_func (*hpel_put)[4]; op_pixels_func (*hpel_avg)[4]; qpel_mc_func (*qpel_put)[16]; qpel_mc_func (*qpel_avg)[16]; uint8_t (*mv_penalty)[MAX_MV*2+1]; ///< amount of bits needed to encode a MV uint8_t *current_mv_penalty; int (*sub_motion_search)(struct MpegEncContext * s, int *mx_ptr, int *my_ptr, int dmin, int src_index, int ref_index, int size, int h); }MotionEstContext; /** * MpegEncContext. */ typedef struct MpegEncContext { struct AVCodecContext *avctx; /* the following parameters must be initialized before encoding */ int width, height;///< picture size. must be a multiple of 16 int gop_size; int intra_only; ///< if true, only intra pictures are generated int bit_rate; ///< wanted bit rate enum OutputFormat out_format; ///< output format int h263_pred; ///< use mpeg4/h263 ac/dc predictions int pb_frame; ///< PB frame mode (0 = none, 1 = base, 2 = improved) /* the following codec id fields are deprecated in favor of codec_id */ int h263_plus; ///< h263 plus headers int h263_msmpeg4; ///< generate MSMPEG4 compatible stream (deprecated, use msmpeg4_version instead) int h263_flv; ///< use flv h263 header enum CodecID codec_id; /* see CODEC_ID_xxx */ int fixed_qscale; ///< fixed qscale if non zero int encoding; ///< true if we are encoding (vs decoding) int flags; ///< AVCodecContext.flags (HQ, MV4, ...) int flags2; ///< AVCodecContext.flags2 int max_b_frames; ///< max number of b-frames for encoding int luma_elim_threshold; int chroma_elim_threshold; int strict_std_compliance; ///< strictly follow the std (MPEG4, ...) int workaround_bugs; ///< workaround bugs in encoders which cannot be detected automatically int codec_tag; ///< internal codec_tag upper case converted from avctx codec_tag int stream_codec_tag; ///< internal stream_codec_tag upper case converted from avctx stream_codec_tag /* the following fields are managed internally by the encoder */ /** bit output */ PutBitContext pb; /* sequence parameters */ int context_initialized; int input_picture_number; ///< used to set pic->display_picture_number, should not be used for/by anything else int coded_picture_number; ///< used to set pic->coded_picture_number, should not be used for/by anything else int picture_number; //FIXME remove, unclear definition int picture_in_gop_number; ///< 0-> first pic in gop, ... int b_frames_since_non_b; ///< used for encoding, relative to not yet reordered input int64_t user_specified_pts;///< last non zero pts from AVFrame which was passed into avcodec_encode_video() int mb_width, mb_height; ///< number of MBs horizontally & vertically int mb_stride; ///< mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11 int b8_stride; ///< 2*mb_width+1 used for some 8x8 block arrays to allow simple addressing int b4_stride; ///< 4*mb_width+1 used for some 4x4 block arrays to allow simple addressing int h_edge_pos, v_edge_pos;///< horizontal / vertical position of the right/bottom edge (pixel replication) int mb_num; ///< number of MBs of a picture int linesize; ///< line size, in bytes, may be different from width int uvlinesize; ///< line size, for chroma in bytes, may be different from width Picture *picture; ///< main picture buffer Picture **input_picture; ///< next pictures on display order for encoding Picture **reordered_input_picture; ///< pointer to the next pictures in codedorder for encoding int start_mb_y; ///< start mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y) int end_mb_y; ///< end mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y) struct MpegEncContext *thread_context[MAX_THREADS]; /** * copy of the previous picture structure. * note, linesize & data, might not match the previous picture (for field pictures) */ Picture last_picture; /** * copy of the next picture structure. * note, linesize & data, might not match the next picture (for field pictures) */ Picture next_picture; /** * copy of the source picture structure for encoding. * note, linesize & data, might not match the source picture (for field pictures) */ Picture new_picture; /** * copy of the current picture structure. * note, linesize & data, might not match the current picture (for field pictures) */ Picture current_picture; ///< buffer to store the decompressed current picture Picture *last_picture_ptr; ///< pointer to the previous picture. Picture *next_picture_ptr; ///< pointer to the next picture (for bidir pred) Picture *current_picture_ptr; ///< pointer to the current picture uint8_t *visualization_buffer[3]; //< temporary buffer vor MV visualization int last_dc[3]; ///< last DC values for MPEG1 int16_t *dc_val_base; int16_t *dc_val[3]; ///< used for mpeg4 DC prediction, all 3 arrays must be continuous int16_t dc_cache[4*5]; int y_dc_scale, c_dc_scale; const uint8_t *y_dc_scale_table; ///< qscale -> y_dc_scale table const uint8_t *c_dc_scale_table; ///< qscale -> c_dc_scale table const uint8_t *chroma_qscale_table; ///< qscale -> chroma_qscale (h263) uint8_t *coded_block_base; uint8_t *coded_block; ///< used for coded block pattern prediction (msmpeg4v3, wmv1) int16_t (*ac_val_base)[16]; int16_t (*ac_val[3])[16]; ///< used for for mpeg4 AC prediction, all 3 arrays must be continuous int ac_pred; uint8_t *prev_pict_types; ///< previous picture types in bitstream order, used for mb skip #define PREV_PICT_TYPES_BUFFER_SIZE 256 int mb_skipped; ///< MUST BE SET only during DECODING uint8_t *mbskip_table; /**< used to avoid copy if macroblock skipped (for black regions for example) and used for b-frame encoding & decoding (contains skip table of next P Frame) */ uint8_t *mbintra_table; ///< used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding uint8_t *cbp_table; ///< used to store cbp, ac_pred for partitioned decoding uint8_t *pred_dir_table; ///< used to store pred_dir for partitioned decoding uint8_t *allocated_edge_emu_buffer; uint8_t *edge_emu_buffer; ///< points into the middle of allocated_edge_emu_buffer uint8_t *rd_scratchpad; ///< scratchpad for rate distortion mb decision uint8_t *obmc_scratchpad; uint8_t *b_scratchpad; ///< scratchpad used for writing into write only buffers int qscale; ///< QP int chroma_qscale; ///< chroma QP unsigned int lambda; ///< lagrange multipler used in rate distortion unsigned int lambda2; ///< (lambda*lambda) >> FF_LAMBDA_SHIFT int *lambda_table; int adaptive_quant; ///< use adaptive quantization int dquant; ///< qscale difference to prev qscale int closed_gop; ///< MPEG1/2 GOP is closed int pict_type; ///< FF_I_TYPE, FF_P_TYPE, FF_B_TYPE, ... int last_pict_type; //FIXME removes int last_non_b_pict_type; ///< used for mpeg4 gmc b-frames & ratecontrol int dropable; int frame_rate_index; int last_lambda_for[5]; ///< last lambda for a specific pict type int skipdct; ///< skip dct and code zero residual /* motion compensation */ int unrestricted_mv; ///< mv can point outside of the coded picture int h263_long_vectors; ///< use horrible h263v1 long vector mode int decode; ///< if 0 then decoding will be skipped (for encoding b frames for example) DSPContext dsp; ///< pointers for accelerated dsp functions int f_code; ///< forward MV resolution int b_code; ///< backward MV resolution for B Frames (mpeg4) int16_t (*p_mv_table_base)[2]; int16_t (*b_forw_mv_table_base)[2]; int16_t (*b_back_mv_table_base)[2]; int16_t (*b_bidir_forw_mv_table_base)[2]; int16_t (*b_bidir_back_mv_table_base)[2]; int16_t (*b_direct_mv_table_base)[2]; int16_t (*p_field_mv_table_base[2][2])[2]; int16_t (*b_field_mv_table_base[2][2][2])[2]; int16_t (*p_mv_table)[2]; ///< MV table (1MV per MB) p-frame encoding int16_t (*b_forw_mv_table)[2]; ///< MV table (1MV per MB) forward mode b-frame encoding int16_t (*b_back_mv_table)[2]; ///< MV table (1MV per MB) backward mode b-frame encoding int16_t (*b_bidir_forw_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding int16_t (*b_bidir_back_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding int16_t (*b_direct_mv_table)[2]; ///< MV table (1MV per MB) direct mode b-frame encoding int16_t (*p_field_mv_table[2][2])[2]; ///< MV table (2MV per MB) interlaced p-frame encoding int16_t (*b_field_mv_table[2][2][2])[2];///< MV table (4MV per MB) interlaced b-frame encoding uint8_t (*p_field_select_table[2]); uint8_t (*b_field_select_table[2][2]); int me_method; ///< ME algorithm int mv_dir; #define MV_DIR_FORWARD 1 #define MV_DIR_BACKWARD 2 #define MV_DIRECT 4 ///< bidirectional mode where the difference equals the MV of the last P/S/I-Frame (mpeg4) int mv_type; #define MV_TYPE_16X16 0 ///< 1 vector for the whole mb #define MV_TYPE_8X8 1 ///< 4 vectors (h263, mpeg4 4MV) #define MV_TYPE_16X8 2 ///< 2 vectors, one per 16x8 block #define MV_TYPE_FIELD 3 ///< 2 vectors, one per field #define MV_TYPE_DMV 4 ///< 2 vectors, special mpeg2 Dual Prime Vectors /**motion vectors for a macroblock first coordinate : 0 = forward 1 = backward second " : depend on type third " : 0 = x, 1 = y */ int mv[2][4][2]; int field_select[2][2]; int last_mv[2][2][2]; ///< last MV, used for MV prediction in MPEG1 & B-frame MPEG4 uint8_t *fcode_tab; ///< smallest fcode needed for each MV int16_t direct_scale_mv[2][64]; ///< precomputed to avoid divisions in ff_mpeg4_set_direct_mv MotionEstContext me; int no_rounding; /**< apply no rounding to motion compensation (MPEG4, msmpeg4, ...) for b-frames rounding mode is always 0 */ int hurry_up; /**< when set to 1 during decoding, b frames will be skipped when set to 2 idct/dequant will be skipped too */ /* macroblock layer */ int mb_x, mb_y; int mb_skip_run; int mb_intra; uint16_t *mb_type; ///< Table for candidate MB types for encoding #define CANDIDATE_MB_TYPE_INTRA 0x01 #define CANDIDATE_MB_TYPE_INTER 0x02 #define CANDIDATE_MB_TYPE_INTER4V 0x04 #define CANDIDATE_MB_TYPE_SKIPPED 0x08 //#define MB_TYPE_GMC 0x10 #define CANDIDATE_MB_TYPE_DIRECT 0x10 #define CANDIDATE_MB_TYPE_FORWARD 0x20 #define CANDIDATE_MB_TYPE_BACKWARD 0x40 #define CANDIDATE_MB_TYPE_BIDIR 0x80 #define CANDIDATE_MB_TYPE_INTER_I 0x100 #define CANDIDATE_MB_TYPE_FORWARD_I 0x200 #define CANDIDATE_MB_TYPE_BACKWARD_I 0x400 #define CANDIDATE_MB_TYPE_BIDIR_I 0x800 #define CANDIDATE_MB_TYPE_DIRECT0 0x1000 int block_index[6]; ///< index to current MB in block based arrays with edges int block_wrap[6]; uint8_t *dest[3]; int *mb_index2xy; ///< mb_index -> mb_x + mb_y*mb_stride /** matrix transmitted in the bitstream */ uint16_t intra_matrix[64]; uint16_t chroma_intra_matrix[64]; uint16_t inter_matrix[64]; uint16_t chroma_inter_matrix[64]; #define QUANT_BIAS_SHIFT 8 int intra_quant_bias; ///< bias for the quantizer int inter_quant_bias; ///< bias for the quantizer int min_qcoeff; ///< minimum encodable coefficient int max_qcoeff; ///< maximum encodable coefficient int ac_esc_length; ///< num of bits needed to encode the longest esc uint8_t *intra_ac_vlc_length; uint8_t *intra_ac_vlc_last_length; uint8_t *inter_ac_vlc_length; uint8_t *inter_ac_vlc_last_length; uint8_t *luma_dc_vlc_length; uint8_t *chroma_dc_vlc_length; #define UNI_AC_ENC_INDEX(run,level) ((run)*128 + (level)) int coded_score[8]; /** precomputed matrix (combine qscale and DCT renorm) */ int (*q_intra_matrix)[64]; int (*q_inter_matrix)[64]; /** identical to the above but for MMX & these are not permutated, second 64 entries are bias*/ uint16_t (*q_intra_matrix16)[2][64]; uint16_t (*q_inter_matrix16)[2][64]; int block_last_index[12]; ///< last non zero coefficient in block /* scantables */ ScanTable intra_scantable; ScanTable intra_h_scantable; ScanTable intra_v_scantable; ScanTable inter_scantable; ///< if inter == intra then intra should be used to reduce tha cache usage /* noise reduction */ int (*dct_error_sum)[64]; int dct_count[2]; uint16_t (*dct_offset)[64]; void *opaque; ///< private data for the user /* bit rate control */ int64_t wanted_bits; int64_t total_bits; int frame_bits; ///< bits used for the current frame int next_lambda; ///< next lambda used for retrying to encode a frame RateControlContext rc_context; ///< contains stuff only accessed in ratecontrol.c /* statistics, used for 2-pass encoding */ int mv_bits; int header_bits; int i_tex_bits; int p_tex_bits; int i_count; int f_count; int b_count; int skip_count; int misc_bits; ///< cbp, mb_type int last_bits; ///< temp var used for calculating the above vars /* error concealment / resync */ int error_count; uint8_t *error_status_table; ///< table of the error status of each MB #define VP_START 1 ///< current MB is the first after a resync marker #define AC_ERROR 2 #define DC_ERROR 4 #define MV_ERROR 8 #define AC_END 16 #define DC_END 32 #define MV_END 64 //FIXME some prefix? int resync_mb_x; ///< x position of last resync marker int resync_mb_y; ///< y position of last resync marker GetBitContext last_resync_gb; ///< used to search for the next resync marker int mb_num_left; ///< number of MBs left in this video packet (for partitioned Slices only) int next_p_frame_damaged; ///< set if the next p frame is damaged, to avoid showing trashed b frames int error_recognition; ParseContext parse_context; /* H.263 specific */ int gob_index; int obmc; ///< overlapped block motion compensation int showed_packed_warning; ///< flag for having shown the warning about divxs invalid b frames /* H.263+ specific */ int umvplus; ///< == H263+ && unrestricted_mv int h263_aic; ///< Advanded INTRA Coding (AIC) int h263_aic_dir; ///< AIC direction: 0 = left, 1 = top int h263_slice_structured; int alt_inter_vlc; ///< alternative inter vlc int modified_quant; int loop_filter; int custom_pcf; /* mpeg4 specific */ int time_increment_bits; ///< number of bits to represent the fractional part of time int last_time_base; int time_base; ///< time in seconds of last I,P,S Frame int64_t time; ///< time of current frame int64_t last_non_b_time; uint16_t pp_time; ///< time distance between the last 2 p,s,i frames uint16_t pb_time; ///< time distance between the last b and p,s,i frame uint16_t pp_field_time; uint16_t pb_field_time; ///< like above, just for interlaced int shape; int vol_sprite_usage; int sprite_width; int sprite_height; int sprite_left; int sprite_top; int sprite_brightness_change; int num_sprite_warping_points; int real_sprite_warping_points; uint16_t sprite_traj[4][2]; ///< sprite trajectory points int sprite_offset[2][2]; ///< sprite offset[isChroma][isMVY] int sprite_delta[2][2]; ///< sprite_delta [isY][isMVY] int sprite_shift[2]; ///< sprite shift [isChroma] int mcsel; int quant_precision; int quarter_sample; ///< 1->qpel, 0->half pel ME/MC int scalability; int hierachy_type; int enhancement_type; int new_pred; int reduced_res_vop; int aspect_ratio_info; //FIXME remove int sprite_warping_accuracy; int low_latency_sprite; int data_partitioning; ///< data partitioning flag from header int partitioned_frame; ///< is current frame partitioned int rvlc; ///< reversible vlc int resync_marker; ///< could this stream contain resync markers int low_delay; ///< no reordering needed / has no b-frames int vo_type; int vol_control_parameters; ///< does the stream contain the low_delay flag, used to workaround buggy encoders int intra_dc_threshold; ///< QP above whch the ac VLC should be used for intra dc int use_intra_dc_vlc; PutBitContext tex_pb; ///< used for data partitioned VOPs PutBitContext pb2; ///< used for data partitioned VOPs int mpeg_quant; int t_frame; ///< time distance of first I -> B, used for interlaced b frames int padding_bug_score; ///< used to detect the VERY common padding bug in MPEG4 int cplx_estimation_trash_i; int cplx_estimation_trash_p; int cplx_estimation_trash_b; /* divx specific, used to workaround (many) bugs in divx5 */ int divx_version; int divx_build; int divx_packed; uint8_t *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them int bitstream_buffer_size; unsigned int allocated_bitstream_buffer_size; int xvid_build; /* lavc specific stuff, used to workaround bugs in libavcodec */ int lavc_build; /* RV10 specific */ int rv10_version; ///< RV10 version: 0 or 3 int rv10_first_dc_coded[3]; int orig_width, orig_height; /* MJPEG specific */ struct MJpegContext *mjpeg_ctx; int mjpeg_vsample[3]; ///< vertical sampling factors, default = {2, 1, 1} int mjpeg_hsample[3]; ///< horizontal sampling factors, default = {2, 1, 1} /* MSMPEG4 specific */ int mv_table_index; int rl_table_index; int rl_chroma_table_index; int dc_table_index; int use_skip_mb_code; int slice_height; ///< in macroblocks int first_slice_line; ///< used in mpeg4 too to handle resync markers int flipflop_rounding; int msmpeg4_version; ///< 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8 int per_mb_rl_table; int esc3_level_length; int esc3_run_length; /** [mb_intra][isChroma][level][run][last] */ int (*ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2]; int inter_intra_pred; int mspel; /* decompression specific */ GetBitContext gb; /* Mpeg1 specific */ int gop_picture_number; ///< index of the first picture of a GOP based on fake_pic_num & mpeg1 specific int last_mv_dir; ///< last mv_dir, used for b frame encoding int broken_link; ///< no_output_of_prior_pics_flag uint8_t *vbv_delay_ptr; ///< pointer to vbv_delay in the bitstream /* MPEG-2-specific - I wished not to have to support this mess. */ int progressive_sequence; int mpeg_f_code[2][2]; int picture_structure; /* picture type */ #define PICT_TOP_FIELD 1 #define PICT_BOTTOM_FIELD 2 #define PICT_FRAME 3 int intra_dc_precision; int frame_pred_frame_dct; int top_field_first; int concealment_motion_vectors; int q_scale_type; int intra_vlc_format; int alternate_scan; int repeat_first_field; int chroma_420_type; int chroma_format; #define CHROMA_420 1 #define CHROMA_422 2 #define CHROMA_444 3 int chroma_x_shift;//depend on pix_format, that depend on chroma_format int chroma_y_shift; int progressive_frame; int full_pel[2]; int interlaced_dct; int first_slice; int first_field; ///< is 1 for the first field of a field picture 0 otherwise /* RTP specific */ int rtp_mode; uint8_t *ptr_lastgob; int swap_uv; //vcr2 codec is an MPEG-2 variant with U and V swapped DCTELEM (*pblocks[12])[64]; DCTELEM (*block)[64]; ///< points to one of the following blocks DCTELEM (*blocks)[8][64]; // for HQ mode we need to keep the best block int (*decode_mb)(struct MpegEncContext *s, DCTELEM block[6][64]); // used by some codecs to avoid a switch() #define SLICE_OK 0 #define SLICE_ERROR -1 #define SLICE_END -2 ///>s->avctx->lowres; s->block_index[0]+=2; s->block_index[1]+=2; s->block_index[2]+=2; s->block_index[3]+=2; s->block_index[4]++; s->block_index[5]++; s->dest[0]+= 2*block_size; s->dest[1]+= block_size; s->dest[2]+= block_size; } static inline int get_bits_diff(MpegEncContext *s){ const int bits= put_bits_count(&s->pb); const int last= s->last_bits; s->last_bits = bits; return bits - last; } static inline int ff_h263_round_chroma(int x){ static const uint8_t h263_chroma_roundtab[16] = { // 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, }; return h263_chroma_roundtab[x & 0xf] + (x >> 3); } /* motion_est.c */ void ff_estimate_p_frame_motion(MpegEncContext * s, int mb_x, int mb_y); void ff_estimate_b_frame_motion(MpegEncContext * s, int mb_x, int mb_y); int ff_get_best_fcode(MpegEncContext * s, int16_t (*mv_table)[2], int type); void ff_fix_long_p_mvs(MpegEncContext * s); void ff_fix_long_mvs(MpegEncContext * s, uint8_t *field_select_table, int field_select, int16_t (*mv_table)[2], int f_code, int type, int truncate); int ff_init_me(MpegEncContext *s); int ff_pre_estimate_p_frame_motion(MpegEncContext * s, int mb_x, int mb_y); int ff_epzs_motion_search(MpegEncContext * s, int *mx_ptr, int *my_ptr, int P[10][2], int src_index, int ref_index, int16_t (*last_mv)[2], int ref_mv_scale, int size, int h); int ff_get_mb_score(MpegEncContext * s, int mx, int my, int src_index, int ref_index, int size, int h, int add_rate); /* mpeg12.c */ extern const uint8_t ff_mpeg1_dc_scale_table[128]; void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number); void mpeg1_encode_mb(MpegEncContext *s, DCTELEM block[6][64], int motion_x, int motion_y); void ff_mpeg1_encode_init(MpegEncContext *s); void ff_mpeg1_encode_slice_header(MpegEncContext *s); void ff_mpeg1_clean_buffers(MpegEncContext *s); int ff_mpeg1_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size, AVCodecParserContext *s); extern const uint8_t ff_mpeg4_y_dc_scale_table[32]; extern const uint8_t ff_mpeg4_c_dc_scale_table[32]; extern const uint8_t ff_aic_dc_scale_table[32]; extern const int16_t ff_mpeg4_default_intra_matrix[64]; extern const int16_t ff_mpeg4_default_non_intra_matrix[64]; extern const uint8_t ff_h263_chroma_qscale_table[32]; extern const uint8_t ff_h263_loop_filter_strength[32]; /* h261.c */ void ff_h261_loop_filter(MpegEncContext *s); void ff_h261_reorder_mb_index(MpegEncContext* s); void ff_h261_encode_mb(MpegEncContext *s, DCTELEM block[6][64], int motion_x, int motion_y); void ff_h261_encode_picture_header(MpegEncContext * s, int picture_number); void ff_h261_encode_init(MpegEncContext *s); int ff_h261_get_picture_format(int width, int height); /* h263.c, h263dec.c */ int ff_h263_decode_init(AVCodecContext *avctx); int ff_h263_decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt); int ff_h263_decode_end(AVCodecContext *avctx); void h263_encode_mb(MpegEncContext *s, DCTELEM block[6][64], int motion_x, int motion_y); void mpeg4_encode_mb(MpegEncContext *s, DCTELEM block[6][64], int motion_x, int motion_y); void h263_encode_picture_header(MpegEncContext *s, int picture_number); void ff_flv_encode_picture_header(MpegEncContext *s, int picture_number); void h263_encode_gob_header(MpegEncContext * s, int mb_line); int16_t *h263_pred_motion(MpegEncContext * s, int block, int dir, int *px, int *py); void mpeg4_pred_ac(MpegEncContext * s, DCTELEM *block, int n, int dir); void ff_set_mpeg4_time(MpegEncContext * s); void mpeg4_encode_picture_header(MpegEncContext *s, int picture_number); void h263_encode_init(MpegEncContext *s); void h263_decode_init_vlc(MpegEncContext *s); int h263_decode_picture_header(MpegEncContext *s); int ff_h263_decode_gob_header(MpegEncContext *s); int ff_mpeg4_decode_picture_header(MpegEncContext * s, GetBitContext *gb); void ff_h263_update_motion_val(MpegEncContext * s); void ff_h263_loop_filter(MpegEncContext * s); void ff_set_qscale(MpegEncContext * s, int qscale); int ff_h263_decode_mba(MpegEncContext *s); void ff_h263_encode_mba(MpegEncContext *s); int intel_h263_decode_picture_header(MpegEncContext *s); int flv_h263_decode_picture_header(MpegEncContext *s); int ff_h263_decode_mb(MpegEncContext *s, DCTELEM block[6][64]); int ff_mpeg4_decode_mb(MpegEncContext *s, DCTELEM block[6][64]); int h263_get_picture_format(int width, int height); void ff_mpeg4_encode_video_packet_header(MpegEncContext *s); void ff_mpeg4_clean_buffers(MpegEncContext *s); void ff_mpeg4_stuffing(PutBitContext * pbc); void ff_mpeg4_init_partitions(MpegEncContext *s); void ff_mpeg4_merge_partitions(MpegEncContext *s); void ff_clean_mpeg4_qscales(MpegEncContext *s); void ff_clean_h263_qscales(MpegEncContext *s); int ff_mpeg4_decode_partitions(MpegEncContext *s); int ff_mpeg4_get_video_packet_prefix_length(MpegEncContext *s); int ff_h263_resync(MpegEncContext *s); const uint8_t *ff_h263_find_resync_marker(const uint8_t *p, const uint8_t *end); int ff_h263_get_gob_height(MpegEncContext *s); void ff_mpeg4_init_direct_mv(MpegEncContext *s); int ff_mpeg4_set_direct_mv(MpegEncContext *s, int mx, int my); void ff_h263_encode_motion(MpegEncContext * s, int val, int f_code); /* rv10.c */ void rv10_encode_picture_header(MpegEncContext *s, int picture_number); int rv_decode_dc(MpegEncContext *s, int n); void rv20_encode_picture_header(MpegEncContext *s, int picture_number); /* msmpeg4.c */ void msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number); void msmpeg4_encode_ext_header(MpegEncContext * s); void msmpeg4_encode_mb(MpegEncContext * s, DCTELEM block[6][64], int motion_x, int motion_y); int msmpeg4_decode_picture_header(MpegEncContext * s); int msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size); int ff_msmpeg4_decode_init(MpegEncContext *s); void ff_msmpeg4_encode_init(MpegEncContext *s); int ff_wmv2_decode_picture_header(MpegEncContext * s); int ff_wmv2_decode_secondary_picture_header(MpegEncContext * s); void ff_wmv2_add_mb(MpegEncContext *s, DCTELEM block[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr); void ff_mspel_motion(MpegEncContext *s, uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr, uint8_t **ref_picture, op_pixels_func (*pix_op)[4], int motion_x, int motion_y, int h); int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number); void ff_wmv2_encode_mb(MpegEncContext * s, DCTELEM block[6][64], int motion_x, int motion_y); #endif /* AVCODEC_MPEGVIDEO_H */