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Split out intel H263 decoder.

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Originally committed as revision 21054 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2010-01-07 06:25:41 +00:00
parent 515a543809
commit d7525cba23
5 changed files with 137 additions and 114 deletions
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2
libavcodec/Makefile
View File

@ -124,7 +124,7 @@ 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\
OBJS-$(CONFIG_H263_DECODER) += h263dec.o h263.o flvdec.o intelh263dec.o \
mpegvideo.o error_resilience.o
OBJS-$(CONFIG_H263_VAAPI_HWACCEL) += vaapi_mpeg4.o
OBJS-$(CONFIG_H263_ENCODER) += mpegvideo_enc.o motion_est.o \

99
libavcodec/h263.c
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@ -133,7 +133,7 @@ int h263_get_picture_format(int width, int height)
return 7;
}
static void show_pict_info(MpegEncContext *s){
void ff_h263_show_pict_info(MpegEncContext *s){
av_log(s->avctx, AV_LOG_DEBUG, "qp:%d %c size:%d rnd:%d%s%s%s%s%s%s%s%s%s %d/%d\n",
s->qscale, av_get_pict_type_char(s->pict_type),
s->gb.size_in_bits, 1-s->no_rounding,
@ -5359,7 +5359,7 @@ int h263_decode_picture_header(MpegEncContext *s)
}
if(s->avctx->debug&FF_DEBUG_PICT_INFO){
show_pict_info(s);
ff_h263_show_pict_info(s);
}
if (s->pict_type == FF_I_TYPE && s->codec_tag == AV_RL32("ZYGO")){
int i,j;
@ -6064,98 +6064,3 @@ end:
s->avctx->has_b_frames= !s->low_delay;
return decode_vop_header(s, gb);
}
/* don't understand why they choose a different header ! */
int intel_h263_decode_picture_header(MpegEncContext *s)
{
int format;
/* picture header */
if (get_bits_long(&s->gb, 22) != 0x20) {
av_log(s->avctx, AV_LOG_ERROR, "Bad picture start code\n");
return -1;
}
s->picture_number = get_bits(&s->gb, 8); /* picture timestamp */
if (get_bits1(&s->gb) != 1) {
av_log(s->avctx, AV_LOG_ERROR, "Bad marker\n");
return -1; /* marker */
}
if (get_bits1(&s->gb) != 0) {
av_log(s->avctx, AV_LOG_ERROR, "Bad H263 id\n");
return -1; /* h263 id */
}
skip_bits1(&s->gb); /* split screen off */
skip_bits1(&s->gb); /* camera off */
skip_bits1(&s->gb); /* freeze picture release off */
format = get_bits(&s->gb, 3);
if (format != 7) {
av_log(s->avctx, AV_LOG_ERROR, "Intel H263 free format not supported\n");
return -1;
}
s->h263_plus = 0;
s->pict_type = FF_I_TYPE + get_bits1(&s->gb);
s->unrestricted_mv = get_bits1(&s->gb);
s->h263_long_vectors = s->unrestricted_mv;
if (get_bits1(&s->gb) != 0) {
av_log(s->avctx, AV_LOG_ERROR, "SAC not supported\n");
return -1; /* SAC: off */
}
s->obmc= get_bits1(&s->gb);
s->pb_frame = get_bits1(&s->gb);
if(format == 7){
format = get_bits(&s->gb, 3);
if(format == 0 || format == 7){
av_log(s->avctx, AV_LOG_ERROR, "Wrong Intel H263 format\n");
return -1;
}
if(get_bits(&s->gb, 2))
av_log(s->avctx, AV_LOG_ERROR, "Bad value for reserved field\n");
s->loop_filter = get_bits1(&s->gb);
if(get_bits1(&s->gb))
av_log(s->avctx, AV_LOG_ERROR, "Bad value for reserved field\n");
if(get_bits1(&s->gb))
s->pb_frame = 2;
if(get_bits(&s->gb, 5))
av_log(s->avctx, AV_LOG_ERROR, "Bad value for reserved field\n");
if(get_bits(&s->gb, 5) != 1)
av_log(s->avctx, AV_LOG_ERROR, "Invalid marker\n");
}
if(format == 6){
int ar = get_bits(&s->gb, 4);
skip_bits(&s->gb, 9); // display width
skip_bits1(&s->gb);
skip_bits(&s->gb, 9); // display height
if(ar == 15){
skip_bits(&s->gb, 8); // aspect ratio - width
skip_bits(&s->gb, 8); // aspect ratio - height
}
}
s->chroma_qscale= s->qscale = get_bits(&s->gb, 5);
skip_bits1(&s->gb); /* Continuous Presence Multipoint mode: off */
if(s->pb_frame){
skip_bits(&s->gb, 3); //temporal reference for B-frame
skip_bits(&s->gb, 2); //dbquant
}
/* PEI */
while (get_bits1(&s->gb) != 0) {
skip_bits(&s->gb, 8);
}
s->f_code = 1;
s->y_dc_scale_table=
s->c_dc_scale_table= ff_mpeg1_dc_scale_table;
if(s->avctx->debug&FF_DEBUG_PICT_INFO)
show_pict_info(s);
return 0;
}

16
libavcodec/h263dec.c
View File

@ -414,7 +414,7 @@ retry:
}
ret = ff_mpeg4_decode_picture_header(s, &s->gb);
} else if (s->codec_id == CODEC_ID_H263I) {
ret = intel_h263_decode_picture_header(s);
ret = ff_intel_h263_decode_picture_header(s);
} else if (CONFIG_FLV_DECODER && s->h263_flv) {
ret = ff_flv_decode_picture_header(s);
} else {
@ -817,20 +817,6 @@ AVCodec wmv1_decoder = {
.pix_fmts= ff_pixfmt_list_420,
};
AVCodec h263i_decoder = {
"h263i",
CODEC_TYPE_VIDEO,
CODEC_ID_H263I,
sizeof(MpegEncContext),
ff_h263_decode_init,
NULL,
ff_h263_decode_end,
ff_h263_decode_frame,
CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
.long_name = NULL_IF_CONFIG_SMALL("Intel H.263"),
.pix_fmts= ff_pixfmt_list_420,
};
#if CONFIG_MPEG4_VDPAU_DECODER
AVCodec mpeg4_vdpau_decoder = {
"mpeg4_vdpau",

131
libavcodec/intelh263dec.c Normal file
View File

@ -0,0 +1,131 @@
/*
* H.263i decoder
*
* 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"
/* don't understand why they choose a different header ! */
int ff_intel_h263_decode_picture_header(MpegEncContext *s)
{
int format;
/* picture header */
if (get_bits_long(&s->gb, 22) != 0x20) {
av_log(s->avctx, AV_LOG_ERROR, "Bad picture start code\n");
return -1;
}
s->picture_number = get_bits(&s->gb, 8); /* picture timestamp */
if (get_bits1(&s->gb) != 1) {
av_log(s->avctx, AV_LOG_ERROR, "Bad marker\n");
return -1; /* marker */
}
if (get_bits1(&s->gb) != 0) {
av_log(s->avctx, AV_LOG_ERROR, "Bad H263 id\n");
return -1; /* h263 id */
}
skip_bits1(&s->gb); /* split screen off */
skip_bits1(&s->gb); /* camera off */
skip_bits1(&s->gb); /* freeze picture release off */
format = get_bits(&s->gb, 3);
if (format != 7) {
av_log(s->avctx, AV_LOG_ERROR, "Intel H263 free format not supported\n");
return -1;
}
s->h263_plus = 0;
s->pict_type = FF_I_TYPE + get_bits1(&s->gb);
s->unrestricted_mv = get_bits1(&s->gb);
s->h263_long_vectors = s->unrestricted_mv;
if (get_bits1(&s->gb) != 0) {
av_log(s->avctx, AV_LOG_ERROR, "SAC not supported\n");
return -1; /* SAC: off */
}
s->obmc= get_bits1(&s->gb);
s->pb_frame = get_bits1(&s->gb);
if(format == 7){
format = get_bits(&s->gb, 3);
if(format == 0 || format == 7){
av_log(s->avctx, AV_LOG_ERROR, "Wrong Intel H263 format\n");
return -1;
}
if(get_bits(&s->gb, 2))
av_log(s->avctx, AV_LOG_ERROR, "Bad value for reserved field\n");
s->loop_filter = get_bits1(&s->gb);
if(get_bits1(&s->gb))
av_log(s->avctx, AV_LOG_ERROR, "Bad value for reserved field\n");
if(get_bits1(&s->gb))
s->pb_frame = 2;
if(get_bits(&s->gb, 5))
av_log(s->avctx, AV_LOG_ERROR, "Bad value for reserved field\n");
if(get_bits(&s->gb, 5) != 1)
av_log(s->avctx, AV_LOG_ERROR, "Invalid marker\n");
}
if(format == 6){
int ar = get_bits(&s->gb, 4);
skip_bits(&s->gb, 9); // display width
skip_bits1(&s->gb);
skip_bits(&s->gb, 9); // display height
if(ar == 15){
skip_bits(&s->gb, 8); // aspect ratio - width
skip_bits(&s->gb, 8); // aspect ratio - height
}
}
s->chroma_qscale= s->qscale = get_bits(&s->gb, 5);
skip_bits1(&s->gb); /* Continuous Presence Multipoint mode: off */
if(s->pb_frame){
skip_bits(&s->gb, 3); //temporal reference for B-frame
skip_bits(&s->gb, 2); //dbquant
}
/* PEI */
while (get_bits1(&s->gb) != 0) {
skip_bits(&s->gb, 8);
}
s->f_code = 1;
s->y_dc_scale_table=
s->c_dc_scale_table= ff_mpeg1_dc_scale_table;
if(s->avctx->debug&FF_DEBUG_PICT_INFO)
ff_h263_show_pict_info(s);
return 0;
}
AVCodec h263i_decoder = {
"h263i",
CODEC_TYPE_VIDEO,
CODEC_ID_H263I,
sizeof(MpegEncContext),
ff_h263_decode_init,
NULL,
ff_h263_decode_end,
ff_h263_decode_frame,
CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
.long_name = NULL_IF_CONFIG_SMALL("Intel H.263"),
.pix_fmts= ff_pixfmt_list_420,
};

3
libavcodec/mpegvideo.h
View File

@ -831,8 +831,9 @@ 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);
void ff_h263_show_pict_info(MpegEncContext *s);
int intel_h263_decode_picture_header(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,