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https://github.com/FFmpeg/FFmpeg.git
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8d061989dd
Not all hwaccels implement all codecs, so using one single list for multiple such codecs means some codecs will be represented in the list, even though they don't actually handle that codec. Copying specific lists in each codec fixes that. Signed-off-by: Martin Storsjö <martin@martin.st>
213 lines
6.9 KiB
C
213 lines
6.9 KiB
C
/*
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* H263 internal header
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*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVCODEC_H263_H
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#define AVCODEC_H263_H
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#include <stdint.h>
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#include "libavutil/rational.h"
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#include "get_bits.h"
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#include "mpegvideo.h"
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#include "rl.h"
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// The defines below define the number of bits that are read at once for
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// reading vlc values. Changing these may improve speed and data cache needs
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// be aware though that decreasing them may need the number of stages that is
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// passed to get_vlc* to be increased.
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#define INTRA_MCBPC_VLC_BITS 6
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#define INTER_MCBPC_VLC_BITS 7
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#define CBPY_VLC_BITS 6
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#define TEX_VLC_BITS 9
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extern const AVRational ff_h263_pixel_aspect[16];
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extern const uint8_t ff_h263_cbpy_tab[16][2];
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extern const uint8_t ff_cbpc_b_tab[4][2];
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extern const uint8_t ff_mvtab[33][2];
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extern const uint8_t ff_h263_intra_MCBPC_code[9];
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extern const uint8_t ff_h263_intra_MCBPC_bits[9];
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extern const uint8_t ff_h263_inter_MCBPC_code[28];
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extern const uint8_t ff_h263_inter_MCBPC_bits[28];
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extern const uint8_t ff_h263_mbtype_b_tab[15][2];
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extern VLC ff_h263_intra_MCBPC_vlc;
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extern VLC ff_h263_inter_MCBPC_vlc;
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extern VLC ff_h263_cbpy_vlc;
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extern RLTable ff_h263_rl_inter;
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extern RLTable ff_rl_intra_aic;
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extern const uint16_t ff_h263_format[8][2];
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extern const uint8_t ff_modified_quant_tab[2][32];
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extern uint16_t ff_mba_max[6];
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extern uint8_t ff_mba_length[7];
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extern uint8_t ff_h263_static_rl_table_store[2][2][2*MAX_RUN + MAX_LEVEL + 3];
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extern const enum AVPixelFormat ff_h263_hwaccel_pixfmt_list_420[];
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int ff_h263_decode_motion(MpegEncContext * s, int pred, int f_code);
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av_const int ff_h263_aspect_to_info(AVRational aspect);
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int ff_h263_decode_init(AVCodecContext *avctx);
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int ff_h263_decode_frame(AVCodecContext *avctx,
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void *data, int *got_frame,
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AVPacket *avpkt);
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int ff_h263_decode_end(AVCodecContext *avctx);
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void ff_h263_encode_mb(MpegEncContext *s,
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int16_t block[6][64],
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int motion_x, int motion_y);
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void ff_h263_encode_picture_header(MpegEncContext *s, int picture_number);
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void ff_h263_encode_gob_header(MpegEncContext * s, int mb_line);
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int16_t *ff_h263_pred_motion(MpegEncContext * s, int block, int dir,
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int *px, int *py);
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void ff_h263_encode_init(MpegEncContext *s);
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void ff_h263_decode_init_vlc(void);
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int ff_h263_decode_picture_header(MpegEncContext *s);
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int ff_h263_decode_gob_header(MpegEncContext *s);
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void ff_h263_update_motion_val(MpegEncContext * s);
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void ff_h263_loop_filter(MpegEncContext * s);
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int ff_h263_decode_mba(MpegEncContext *s);
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void ff_h263_encode_mba(MpegEncContext *s);
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void ff_init_qscale_tab(MpegEncContext *s);
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int ff_h263_pred_dc(MpegEncContext * s, int n, int16_t **dc_val_ptr);
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void ff_h263_pred_acdc(MpegEncContext * s, int16_t *block, int n);
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/**
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* Print picture info if FF_DEBUG_PICT_INFO is set.
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*/
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void ff_h263_show_pict_info(MpegEncContext *s);
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int ff_intel_h263_decode_picture_header(MpegEncContext *s);
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int ff_h263_decode_mb(MpegEncContext *s,
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int16_t block[6][64]);
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/**
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* Return the value of the 3bit "source format" syntax element.
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* This represents some standard picture dimensions or indicates that
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* width&height are explicitly stored later.
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*/
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int av_const h263_get_picture_format(int width, int height);
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void ff_clean_h263_qscales(MpegEncContext *s);
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int ff_h263_resync(MpegEncContext *s);
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const uint8_t *ff_h263_find_resync_marker(const uint8_t *p, const uint8_t *end);
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int ff_h263_get_gob_height(MpegEncContext *s);
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void ff_h263_encode_motion(MpegEncContext * s, int val, int f_code);
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static inline int h263_get_motion_length(MpegEncContext * s, int val, int f_code){
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int l, bit_size, code;
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if (val == 0) {
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return ff_mvtab[0][1];
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} else {
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bit_size = f_code - 1;
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/* modulo encoding */
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l= INT_BIT - 6 - bit_size;
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val = (val<<l)>>l;
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val--;
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code = (val >> bit_size) + 1;
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return ff_mvtab[code][1] + 1 + bit_size;
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}
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}
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static inline void ff_h263_encode_motion_vector(MpegEncContext * s, int x, int y, int f_code){
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if(s->flags2 & CODEC_FLAG2_NO_OUTPUT){
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skip_put_bits(&s->pb,
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h263_get_motion_length(s, x, f_code)
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+h263_get_motion_length(s, y, f_code));
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}else{
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ff_h263_encode_motion(s, x, f_code);
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ff_h263_encode_motion(s, y, f_code);
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}
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}
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static inline int get_p_cbp(MpegEncContext * s,
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int16_t block[6][64],
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int motion_x, int motion_y){
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int cbp, i;
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if (s->mpv_flags & FF_MPV_FLAG_CBP_RD) {
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int best_cbpy_score= INT_MAX;
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int best_cbpc_score= INT_MAX;
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int cbpc = (-1), cbpy= (-1);
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const int offset= (s->mv_type==MV_TYPE_16X16 ? 0 : 16) + (s->dquant ? 8 : 0);
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const int lambda= s->lambda2 >> (FF_LAMBDA_SHIFT - 6);
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for(i=0; i<4; i++){
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int score= ff_h263_inter_MCBPC_bits[i + offset] * lambda;
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if(i&1) score += s->coded_score[5];
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if(i&2) score += s->coded_score[4];
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if(score < best_cbpc_score){
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best_cbpc_score= score;
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cbpc= i;
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}
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}
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for(i=0; i<16; i++){
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int score= ff_h263_cbpy_tab[i ^ 0xF][1] * lambda;
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if(i&1) score += s->coded_score[3];
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if(i&2) score += s->coded_score[2];
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if(i&4) score += s->coded_score[1];
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if(i&8) score += s->coded_score[0];
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if(score < best_cbpy_score){
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best_cbpy_score= score;
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cbpy= i;
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}
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}
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cbp= cbpc + 4*cbpy;
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if ((motion_x | motion_y | s->dquant) == 0 && s->mv_type==MV_TYPE_16X16){
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if(best_cbpy_score + best_cbpc_score + 2*lambda >= 0)
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cbp= 0;
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}
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for (i = 0; i < 6; i++) {
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if (s->block_last_index[i] >= 0 && ((cbp >> (5 - i))&1)==0 ){
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s->block_last_index[i]= -1;
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s->dsp.clear_block(s->block[i]);
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}
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}
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}else{
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cbp= 0;
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for (i = 0; i < 6; i++) {
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if (s->block_last_index[i] >= 0)
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cbp |= 1 << (5 - i);
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}
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}
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return cbp;
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}
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static inline void memsetw(short *tab, int val, int n)
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{
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int i;
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for(i=0;i<n;i++)
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tab[i] = val;
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}
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#endif /* AVCODEC_H263_H */
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