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Split the mpeg4 encoder and decoder off h263.c

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Originally committed as revision 21079 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer
2010-01-07 23:53:49 +00:00
parent 84f0aba18d
commit ca334dd14b
14 changed files with 4113 additions and 3884 deletions
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4
libavcodec/Makefile
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@@ -124,10 +124,10 @@ OBJS-$(CONFIG_H261_ENCODER) += h261enc.o h261.o \
mpegvideo_enc.o motion_est.o \
ratecontrol.o mpeg12data.o \
mpegvideo.o
OBJS-$(CONFIG_H263_DECODER) += h263dec.o h263.o flvdec.o intelh263dec.o \
OBJS-$(CONFIG_H263_DECODER) += h263dec.o h263.o mpeg4video.o mpeg4videodec.o flvdec.o intelh263dec.o \
mpegvideo.o error_resilience.o
OBJS-$(CONFIG_H263_VAAPI_HWACCEL) += vaapi_mpeg4.o
OBJS-$(CONFIG_H263_ENCODER) += mpegvideo_enc.o motion_est.o \
OBJS-$(CONFIG_H263_ENCODER) += mpegvideo_enc.o mpeg4video.o mpeg4videoenc.o motion_est.o \
ratecontrol.o h263.o flvenc.o mpeg12data.o \
mpegvideo.o error_resilience.o
OBJS-$(CONFIG_H264_DECODER) += h264.o h264idct.o h264pred.o cabac.o \

3742
libavcodec/h263.c
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File diff suppressed because it is too large Load Diff

178
libavcodec/h263.h Normal file
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@@ -0,0 +1,178 @@
/*
* H263 internal header
*
* 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
*/
#ifndef AVCODEC_H263_H
#define AVCODEC_H263_H
// The defines below define the number of bits that are read at once for
// reading vlc values. Changing these may improve speed and data cache needs
// be aware though that decreasing them may need the number of stages that is
// passed to get_vlc* to be increased.
#define INTRA_MCBPC_VLC_BITS 6
#define INTER_MCBPC_VLC_BITS 7
#define CBPY_VLC_BITS 6
#define TEX_VLC_BITS 9
extern const AVRational ff_h263_pixel_aspect[16];
extern const uint8_t cbpy_tab[16][2];
extern const uint8_t mvtab[33][2];
extern const uint8_t intra_MCBPC_code[9];
extern const uint8_t intra_MCBPC_bits[9];
extern const uint8_t inter_MCBPC_code[28];
extern const uint8_t inter_MCBPC_bits[28];
extern VLC intra_MCBPC_vlc;
extern VLC inter_MCBPC_vlc;
extern VLC cbpy_vlc;
extern RLTable rl_inter;
int h263_decode_motion(MpegEncContext * s, int pred, int f_code);
av_const int ff_h263_aspect_to_info(AVRational aspect);
static inline int h263_get_motion_length(MpegEncContext * s, int val, int f_code){
int l, bit_size, code;
if (val == 0) {
return mvtab[0][1];
} else {
bit_size = f_code - 1;
/* modulo encoding */
l= INT_BIT - 6 - bit_size;
val = (val<<l)>>l;
val--;
code = (val >> bit_size) + 1;
return mvtab[code][1] + 1 + bit_size;
}
}
static inline void ff_h263_encode_motion_vector(MpegEncContext * s, int x, int y, int f_code){
if(s->flags2 & CODEC_FLAG2_NO_OUTPUT){
skip_put_bits(&s->pb,
h263_get_motion_length(s, x, f_code)
+h263_get_motion_length(s, y, f_code));
}else{
ff_h263_encode_motion(s, x, f_code);
ff_h263_encode_motion(s, y, f_code);
}
}
static inline int get_p_cbp(MpegEncContext * s,
DCTELEM block[6][64],
int motion_x, int motion_y){
int cbp, i;
if(s->flags & CODEC_FLAG_CBP_RD){
int best_cbpy_score= INT_MAX;
int best_cbpc_score= INT_MAX;
int cbpc = (-1), cbpy= (-1);
const int offset= (s->mv_type==MV_TYPE_16X16 ? 0 : 16) + (s->dquant ? 8 : 0);
const int lambda= s->lambda2 >> (FF_LAMBDA_SHIFT - 6);
for(i=0; i<4; i++){
int score= inter_MCBPC_bits[i + offset] * lambda;
if(i&1) score += s->coded_score[5];
if(i&2) score += s->coded_score[4];
if(score < best_cbpc_score){
best_cbpc_score= score;
cbpc= i;
}
}
for(i=0; i<16; i++){
int score= cbpy_tab[i ^ 0xF][1] * lambda;
if(i&1) score += s->coded_score[3];
if(i&2) score += s->coded_score[2];
if(i&4) score += s->coded_score[1];
if(i&8) score += s->coded_score[0];
if(score < best_cbpy_score){
best_cbpy_score= score;
cbpy= i;
}
}
cbp= cbpc + 4*cbpy;
if ((motion_x | motion_y | s->dquant) == 0 && s->mv_type==MV_TYPE_16X16){
if(best_cbpy_score + best_cbpc_score + 2*lambda >= 0)
cbp= 0;
}
for (i = 0; i < 6; i++) {
if (s->block_last_index[i] >= 0 && ((cbp >> (5 - i))&1)==0 ){
s->block_last_index[i]= -1;
s->dsp.clear_block(s->block[i]);
}
}
}else{
cbp= 0;
for (i = 0; i < 6; i++) {
if (s->block_last_index[i] >= 0)
cbp |= 1 << (5 - i);
}
}
return cbp;
}
static inline int get_b_cbp(MpegEncContext * s, DCTELEM block[6][64],
int motion_x, int motion_y, int mb_type){
int cbp=0, i;
if(s->flags & CODEC_FLAG_CBP_RD){
int score=0;
const int lambda= s->lambda2 >> (FF_LAMBDA_SHIFT - 6);
for(i=0; i<6; i++){
if(s->coded_score[i] < 0){
score += s->coded_score[i];
cbp |= 1 << (5 - i);
}
}
if(cbp){
int zero_score= -6;
if ((motion_x | motion_y | s->dquant | mb_type) == 0){
zero_score-= 4; //2*MV + mb_type + cbp bit
}
zero_score*= lambda;
if(zero_score <= score){
cbp=0;
}
}
for (i = 0; i < 6; i++) {
if (s->block_last_index[i] >= 0 && ((cbp >> (5 - i))&1)==0 ){
s->block_last_index[i]= -1;
s->dsp.clear_block(s->block[i]);
}
}
}else{
for (i = 0; i < 6; i++) {
if (s->block_last_index[i] >= 0)
cbp |= 1 << (5 - i);
}
}
return cbp;
}
#endif

21
libavcodec/h263data.h
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@@ -177,7 +177,7 @@ const int8_t inter_run[102] = {
35, 36, 37, 38, 39, 40,
};
static RLTable rl_inter = {
RLTable rl_inter = {
102,
58,
inter_vlc,
@@ -313,4 +313,23 @@ const uint8_t ff_h263_loop_filter_strength[32]={
0, 1, 1, 2, 2, 3, 3, 4, 4, 4, 5, 5, 6, 6, 7, 7, 7, 8, 8, 8, 9, 9, 9,10,10,10,11,11,11,12,12,12
};
const AVRational ff_h263_pixel_aspect[16]={
{0, 1},
{1, 1},
{12, 11},
{10, 11},
{16, 11},
{40, 33},
{0, 1},
{0, 1},
{0, 1},
{0, 1},
{0, 1},
{0, 1},
{0, 1},
{0, 1},
{0, 1},
{0, 1},
};
#endif /* AVCODEC_H263DATA_H */

37
libavcodec/h263dec.c
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@@ -34,6 +34,7 @@
#include "msmpeg4.h"
#include "vdpau_internal.h"
#include "flv.h"
#include "mpeg4video.h"
//#define DEBUG
//#define PRINT_FRAME_TIME
@@ -64,11 +65,6 @@ av_cold int ff_h263_decode_init(AVCodecContext *avctx)
avctx->chroma_sample_location = AVCHROMA_LOC_CENTER;
break;
case CODEC_ID_MPEG4:
s->decode_mb= ff_mpeg4_decode_mb;
s->time_increment_bits = 4; /* default value for broken headers */
s->h263_pred = 1;
s->low_delay = 0; //default, might be overriden in the vol header during header parsing
avctx->chroma_sample_location = AVCHROMA_LOC_LEFT;
break;
case CODEC_ID_MSMPEG4V1:
s->h263_msmpeg4 = 1;
@@ -731,21 +727,6 @@ av_log(avctx, AV_LOG_DEBUG, "%"PRId64"\n", rdtsc()-time);
return get_consumed_bytes(s, buf_size);
}
AVCodec mpeg4_decoder = {
"mpeg4",
CODEC_TYPE_VIDEO,
CODEC_ID_MPEG4,
sizeof(MpegEncContext),
ff_h263_decode_init,
NULL,
ff_h263_decode_end,
ff_h263_decode_frame,
CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY,
.flush= ff_mpeg_flush,
.long_name= NULL_IF_CONFIG_SMALL("MPEG-4 part 2"),
.pix_fmts= ff_hwaccel_pixfmt_list_420,
};
AVCodec h263_decoder = {
"h263",
CODEC_TYPE_VIDEO,
@@ -816,19 +797,3 @@ AVCodec wmv1_decoder = {
.long_name= NULL_IF_CONFIG_SMALL("Windows Media Video 7"),
.pix_fmts= ff_pixfmt_list_420,
};
#if CONFIG_MPEG4_VDPAU_DECODER
AVCodec mpeg4_vdpau_decoder = {
"mpeg4_vdpau",
CODEC_TYPE_VIDEO,
CODEC_ID_MPEG4,
sizeof(MpegEncContext),
ff_h263_decode_init,
NULL,
ff_h263_decode_end,
ff_h263_decode_frame,
CODEC_CAP_DR1 | CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY | CODEC_CAP_HWACCEL_VDPAU,
.long_name= NULL_IF_CONFIG_SMALL("MPEG-4 part 2 (VDPAU)"),
.pix_fmts= (const enum PixelFormat[]){PIX_FMT_VDPAU_MPEG4, PIX_FMT_NONE},
};
#endif

80
libavcodec/mpeg4data.h
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@@ -31,43 +31,6 @@
#include <stdint.h>
#include "mpegvideo.h"
// shapes
#define RECT_SHAPE 0
#define BIN_SHAPE 1
#define BIN_ONLY_SHAPE 2
#define GRAY_SHAPE 3
#define SIMPLE_VO_TYPE 1
#define CORE_VO_TYPE 3
#define MAIN_VO_TYPE 4
#define NBIT_VO_TYPE 5
#define ARTS_VO_TYPE 10
#define ACE_VO_TYPE 12
#define ADV_SIMPLE_VO_TYPE 17
// aspect_ratio_info
#define EXTENDED_PAR 15
//vol_sprite_usage / sprite_enable
#define STATIC_SPRITE 1
#define GMC_SPRITE 2
#define MOTION_MARKER 0x1F001
#define DC_MARKER 0x6B001
static const int mb_type_b_map[4]= {
MB_TYPE_DIRECT2 | MB_TYPE_L0L1,
MB_TYPE_L0L1 | MB_TYPE_16x16,
MB_TYPE_L1 | MB_TYPE_16x16,
MB_TYPE_L0 | MB_TYPE_16x16,
};
#define VOS_STARTCODE 0x1B0
#define USER_DATA_STARTCODE 0x1B2
#define GOP_STARTCODE 0x1B3
#define VISUAL_OBJ_STARTCODE 0x1B5
#define VOP_STARTCODE 0x1B6
/* dc encoding for mpeg4 */
const uint8_t DCtab_lum[13][2] =
{
@@ -143,7 +106,7 @@ const int8_t intra_run[102] = {
15, 16, 17, 18, 19, 20,
};
static RLTable rl_intra = {
RLTable rl_intra = {
102,
67,
intra_vlc,
@@ -152,7 +115,7 @@ static RLTable rl_intra = {
};
/* Note this is identical to the intra rvlc except that it is reordered. */
static const uint16_t inter_rvlc[170][2]={
const uint16_t inter_rvlc[170][2]={
{0x0006, 3},{0x0001, 4},{0x0004, 5},{0x001C, 7},
{0x003C, 8},{0x003D, 8},{0x007C, 9},{0x00FC, 10},
{0x00FD, 10},{0x01FC, 11},{0x01FD, 11},{0x03FC, 12},
@@ -198,7 +161,7 @@ static const uint16_t inter_rvlc[170][2]={
{0x3F7C, 15},{0x3F7D, 15},{0x0000, 4}
};
static const int8_t inter_rvlc_run[169]={
const int8_t inter_rvlc_run[169]={
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 1, 1, 1, 1, 1,
@@ -223,7 +186,7 @@ static const int8_t inter_rvlc_run[169]={
43, 44,
};
static const int8_t inter_rvlc_level[169]={
const int8_t inter_rvlc_level[169]={
1, 2, 3, 4, 5, 6, 7, 8,
9, 10, 11, 12, 13, 14, 15, 16,
17, 18, 19, 1, 2, 3, 4, 5,
@@ -248,7 +211,7 @@ static const int8_t inter_rvlc_level[169]={
1, 1,
};
static RLTable rvlc_rl_inter = {
RLTable rvlc_rl_inter = {
169,
103,
inter_rvlc,
@@ -256,7 +219,7 @@ static RLTable rvlc_rl_inter = {
inter_rvlc_level,
};
static const uint16_t intra_rvlc[170][2]={
const uint16_t intra_rvlc[170][2]={
{0x0006, 3},{0x0007, 3},{0x000A, 4},{0x0009, 5},
{0x0014, 6},{0x0015, 6},{0x0034, 7},{0x0074, 8},
{0x0075, 8},{0x00DD, 9},{0x00EC, 9},{0x01EC, 10},
@@ -302,7 +265,7 @@ static const uint16_t intra_rvlc[170][2]={
{0x3F7C, 15},{0x3F7D, 15},{0x0000, 4}
};
static const int8_t intra_rvlc_run[169]={
const int8_t intra_rvlc_run[169]={
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
@@ -327,7 +290,7 @@ static const int8_t intra_rvlc_run[169]={
43, 44,
};
static const int8_t intra_rvlc_level[169]={
const int8_t intra_rvlc_level[169]={
1, 2, 3, 4, 5, 6, 7, 8,
9, 10, 11, 12, 13, 14, 15, 16,
17, 18, 19, 20, 21, 22, 23, 24,
@@ -352,7 +315,7 @@ static const int8_t intra_rvlc_level[169]={
1, 1,
};
static RLTable rvlc_rl_intra = {
RLTable rvlc_rl_intra = {
169,
103,
intra_rvlc,
@@ -360,35 +323,16 @@ static RLTable rvlc_rl_intra = {
intra_rvlc_level,
};
static const uint16_t sprite_trajectory_tab[15][2] = {
const uint16_t sprite_trajectory_tab[15][2] = {
{0x00, 2}, {0x02, 3}, {0x03, 3}, {0x04, 3}, {0x05, 3}, {0x06, 3},
{0x0E, 4}, {0x1E, 5}, {0x3E, 6}, {0x7E, 7}, {0xFE, 8},
{0x1FE, 9},{0x3FE, 10},{0x7FE, 11},{0xFFE, 12},
};
static const uint8_t mb_type_b_tab[4][2] = {
const uint8_t mb_type_b_tab[4][2] = {
{1, 1}, {1, 2}, {1, 3}, {1, 4},
};
static const AVRational pixel_aspect[16]={
{0, 1},
{1, 1},
{12, 11},
{10, 11},
{16, 11},
{40, 33},
{0, 1},
{0, 1},
{0, 1},
{0, 1},
{0, 1},
{0, 1},
{0, 1},
{0, 1},
{0, 1},
{0, 1},
};
/* these matrixes will be permuted for the idct */
const int16_t ff_mpeg4_default_intra_matrix[64] = {
8, 17, 18, 19, 21, 23, 25, 27,
@@ -425,7 +369,7 @@ const uint16_t ff_mpeg4_resync_prefix[8]={
0x7F00, 0x7E00, 0x7C00, 0x7800, 0x7000, 0x6000, 0x4000, 0x0000
};
static const uint8_t mpeg4_dc_threshold[8]={
const uint8_t mpeg4_dc_threshold[8]={
99, 13, 15, 17, 19, 21, 23, 0
};

72
libavcodec/mpeg4video.c Normal file
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@@ -0,0 +1,72 @@
/*
* MPEG4 decoder / encoder common code.
* Copyright (c) 2000,2001 Fabrice Bellard
* Copyright (c) 2002-2010 Michael Niedermayer <michaelni@gmx.at>
*
* 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
*/
#include "mpegvideo.h"
#include "mpeg4video.h"
#include "mpeg4data.h"
uint8_t ff_mpeg4_static_rl_table_store[3][2][2*MAX_RUN + MAX_LEVEL + 3];
int ff_mpeg4_get_video_packet_prefix_length(MpegEncContext *s){
switch(s->pict_type){
case FF_I_TYPE:
return 16;
case FF_P_TYPE:
case FF_S_TYPE:
return s->f_code+15;
case FF_B_TYPE:
return FFMAX3(s->f_code, s->b_code, 2) + 15;
default:
return -1;
}
}
void ff_mpeg4_clean_buffers(MpegEncContext *s)
{
int c_wrap, c_xy, l_wrap, l_xy;
l_wrap= s->b8_stride;
l_xy= (2*s->mb_y-1)*l_wrap + s->mb_x*2 - 1;
c_wrap= s->mb_stride;
c_xy= (s->mb_y-1)*c_wrap + s->mb_x - 1;
#if 0
/* clean DC */
memsetw(s->dc_val[0] + l_xy, 1024, l_wrap*2+1);
memsetw(s->dc_val[1] + c_xy, 1024, c_wrap+1);
memsetw(s->dc_val[2] + c_xy, 1024, c_wrap+1);
#endif
/* clean AC */
memset(s->ac_val[0] + l_xy, 0, (l_wrap*2+1)*16*sizeof(int16_t));
memset(s->ac_val[1] + c_xy, 0, (c_wrap +1)*16*sizeof(int16_t));
memset(s->ac_val[2] + c_xy, 0, (c_wrap +1)*16*sizeof(int16_t));
/* clean MV */
// we can't clear the MVs as they might be needed by a b frame
// memset(s->motion_val + l_xy, 0, (l_wrap*2+1)*2*sizeof(int16_t));
// memset(s->motion_val, 0, 2*sizeof(int16_t)*(2 + s->mb_width*2)*(2 + s->mb_height*2));
s->last_mv[0][0][0]=
s->last_mv[0][0][1]=
s->last_mv[1][0][0]=
s->last_mv[1][0][1]= 0;
}

197
libavcodec/mpeg4video.h Normal file
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@@ -0,0 +1,197 @@
/*
* MPEG4 encoder/decoder internal header.
* Copyright (c) 2000,2001 Fabrice Bellard
* Copyright (c) 2002-2010 Michael Niedermayer <michaelni@gmx.at>
*
* 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
*/
#ifndef AVCODEC_MPEG4VIDEO_H
#define AVCODEC_MPEG4VIDEO_H
// shapes
#define RECT_SHAPE 0
#define BIN_SHAPE 1
#define BIN_ONLY_SHAPE 2
#define GRAY_SHAPE 3
#define SIMPLE_VO_TYPE 1
#define CORE_VO_TYPE 3
#define MAIN_VO_TYPE 4
#define NBIT_VO_TYPE 5
#define ARTS_VO_TYPE 10
#define ACE_VO_TYPE 12
#define ADV_SIMPLE_VO_TYPE 17
// aspect_ratio_info
#define EXTENDED_PAR 15
//vol_sprite_usage / sprite_enable
#define STATIC_SPRITE 1
#define GMC_SPRITE 2
#define MOTION_MARKER 0x1F001
#define DC_MARKER 0x6B001
#define VOS_STARTCODE 0x1B0
#define USER_DATA_STARTCODE 0x1B2
#define GOP_STARTCODE 0x1B3
#define VISUAL_OBJ_STARTCODE 0x1B5
#define VOP_STARTCODE 0x1B6
/* dc encoding for mpeg4 */
extern const uint8_t DCtab_lum[13][2];
extern const uint8_t DCtab_chrom[13][2];
extern const uint16_t intra_vlc[103][2];
extern const int8_t intra_level[102];
extern const int8_t intra_run[102];
extern RLTable rl_intra;
/* Note this is identical to the intra rvlc except that it is reordered. */
extern const uint16_t inter_rvlc[170][2];
extern const int8_t inter_rvlc_run[169];
extern const int8_t inter_rvlc_level[169];
extern RLTable rvlc_rl_inter;
extern const uint16_t intra_rvlc[170][2];
extern const int8_t intra_rvlc_run[169];
extern const int8_t intra_rvlc_level[169];
extern RLTable rvlc_rl_intra;
extern const uint16_t sprite_trajectory_tab[15][2];
extern const uint8_t mb_type_b_tab[4][2];
extern const AVRational pixel_aspect[16];
/* these matrixes will be permuted for the idct */
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_mpeg4_y_dc_scale_table[32];
extern const uint8_t ff_mpeg4_c_dc_scale_table[32];
extern const uint16_t ff_mpeg4_resync_prefix[8];
extern const uint8_t mpeg4_dc_threshold[8];
void mpeg4_encode_mb(MpegEncContext *s,
DCTELEM block[6][64],
int motion_x, int motion_y);
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);
int ff_mpeg4_decode_picture_header(MpegEncContext * s, GetBitContext *gb);
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);
int ff_mpeg4_decode_partitions(MpegEncContext *s);
int ff_mpeg4_get_video_packet_prefix_length(MpegEncContext *s);
int mpeg4_decode_video_packet_header(MpegEncContext *s);
extern uint8_t ff_mpeg4_static_rl_table_store[3][2][2*MAX_RUN + MAX_LEVEL + 3];
#if 0 //3IV1 is quite rare and it slows things down a tiny bit
#define IS_3IV1 s->codec_tag == AV_RL32("3IV1")
#else
#define IS_3IV1 0
#endif
/**
* predicts the dc.
* encoding quantized level -> quantized diff
* decoding quantized diff -> quantized level
* @param n block index (0-3 are luma, 4-5 are chroma)
* @param dir_ptr pointer to an integer where the prediction direction will be stored
*/
static inline int ff_mpeg4_pred_dc(MpegEncContext * s, int n, int level, int *dir_ptr, int encoding)
{
int a, b, c, wrap, pred, scale, ret;
int16_t *dc_val;
/* find prediction */
if (n < 4) {
scale = s->y_dc_scale;
} else {
scale = s->c_dc_scale;
}
if(IS_3IV1)
scale= 8;
wrap= s->block_wrap[n];
dc_val = s->dc_val[0] + s->block_index[n];
/* B C
* A X
*/
a = dc_val[ - 1];
b = dc_val[ - 1 - wrap];
c = dc_val[ - wrap];
/* outside slice handling (we can't do that by memset as we need the dc for error resilience) */
if(s->first_slice_line && n!=3){
if(n!=2) b=c= 1024;
if(n!=1 && s->mb_x == s->resync_mb_x) b=a= 1024;
}
if(s->mb_x == s->resync_mb_x && s->mb_y == s->resync_mb_y+1){
if(n==0 || n==4 || n==5)
b=1024;
}
if (abs(a - b) < abs(b - c)) {
pred = c;
*dir_ptr = 1; /* top */
} else {
pred = a;
*dir_ptr = 0; /* left */
}
/* we assume pred is positive */
pred = FASTDIV((pred + (scale >> 1)), scale);
if(encoding){
ret = level - pred;
}else{
level += pred;
ret= level;
if(s->error_recognition>=3){
if(level<0){
av_log(s->avctx, AV_LOG_ERROR, "dc<0 at %dx%d\n", s->mb_x, s->mb_y);
return -1;
}
if(level*scale > 2048 + scale){
av_log(s->avctx, AV_LOG_ERROR, "dc overflow at %dx%d\n", s->mb_x, s->mb_y);
return -1;
}
}
}
level *=scale;
if(level&(~2047)){
if(level<0)
level=0;
else if(!(s->workaround_bugs&FF_BUG_DC_CLIP))
level=2047;
}
dc_val[0]= level;
return ret;
}
#endif

2262
libavcodec/mpeg4videodec.c Normal file
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File diff suppressed because it is too large Load Diff

1351
libavcodec/mpeg4videoenc.c Normal file
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File diff suppressed because it is too large Load Diff

22
libavcodec/mpegvideo.h
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@@ -782,11 +782,7 @@ 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];
@@ -810,22 +806,14 @@ 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 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);
@@ -840,8 +828,6 @@ void ff_h263_show_pict_info(MpegEncContext *s);
int ff_intel_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]);
/**
* Returns the value of the 3bit "source format" syntax element.
@@ -850,15 +836,7 @@ int ff_mpeg4_decode_mb(MpegEncContext *s,
*/
int av_const 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);

14
libavcodec/mpegvideo_enc.c
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@@ -36,6 +36,7 @@
#include "faandct.h"
#include "aandcttab.h"
#include "flv.h"
#include "mpeg4video.h"
#include <limits.h>
//#undef NDEBUG
@@ -3781,19 +3782,6 @@ AVCodec h263p_encoder = {
.long_name= NULL_IF_CONFIG_SMALL("H.263+ / H.263-1998 / H.263 version 2"),
};
AVCodec mpeg4_encoder = {
"mpeg4",
CODEC_TYPE_VIDEO,
CODEC_ID_MPEG4,
sizeof(MpegEncContext),
MPV_encode_init,
MPV_encode_picture,
MPV_encode_end,
.pix_fmts= (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_NONE},
.capabilities= CODEC_CAP_DELAY,
.long_name= NULL_IF_CONFIG_SMALL("MPEG-4 part 2"),
};
AVCodec msmpeg4v1_encoder = {
"msmpeg4v1",
CODEC_TYPE_VIDEO,

4
libavcodec/msmpeg4.c
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@@ -32,6 +32,8 @@
#include "mpegvideo.h"
#include "msmpeg4.h"
#include "libavutil/x86_cpu.h"
#include "h263.h"
#include "mpeg4video.h"
/*
* You can also call this codec : MPEG4 with a twist !
@@ -43,7 +45,6 @@
//#define DEBUG
#define DC_VLC_BITS 9
#define CBPY_VLC_BITS 6
#define V1_INTRA_CBPC_VLC_BITS 6
#define V1_INTER_CBPC_VLC_BITS 6
#define V2_INTRA_CBPC_VLC_BITS 3
@@ -1059,7 +1060,6 @@ else
VLC ff_mb_non_intra_vlc[4];
static VLC v2_dc_lum_vlc;
static VLC v2_dc_chroma_vlc;
static VLC cbpy_vlc;
static VLC v2_intra_cbpc_vlc;
static VLC v2_mb_type_vlc;
static VLC v2_mv_vlc;

13
libavcodec/msmpeg4data.h
View File

@@ -52,19 +52,6 @@ extern VLC ff_msmp4_dc_chroma_vlc[2];
/* intra picture macroblock coded block pattern */
extern const uint16_t ff_msmp4_mb_i_table[64][2];
extern const uint8_t cbpy_tab[16][2];
extern const uint8_t DCtab_lum[13][2];
extern const uint8_t DCtab_chrom[13][2];
extern const uint8_t mvtab[33][2];
extern const uint8_t intra_MCBPC_code[9];
extern const uint8_t intra_MCBPC_bits[9];
extern const uint8_t inter_MCBPC_code[28];
extern const uint8_t inter_MCBPC_bits[28];
#define WMV1_SCANTABLE_COUNT 4
extern const uint8_t wmv1_scantable[WMV1_SCANTABLE_COUNT][64];