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Split out flv encoding.

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Originally committed as revision 21050 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2010-01-07 04:42:39 +00:00
parent f867378771
commit eb52376915
6 changed files with 116 additions and 63 deletions
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2
libavcodec/Makefile
View File

@ -128,7 +128,7 @@ OBJS-$(CONFIG_H263_DECODER) += h263dec.o h263.o \
mpegvideo.o error_resilience.o
OBJS-$(CONFIG_H263_VAAPI_HWACCEL) += vaapi_mpeg4.o
OBJS-$(CONFIG_H263_ENCODER) += mpegvideo_enc.o motion_est.o \
ratecontrol.o h263.o mpeg12data.o \
ratecontrol.o h263.o flvenc.o mpeg12data.o \
mpegvideo.o error_resilience.o
OBJS-$(CONFIG_H264_DECODER) += h264.o h264idct.o h264pred.o cabac.o \
mpegvideo.o error_resilience.o

27
libavcodec/flv.h Normal file
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@ -0,0 +1,27 @@
/*
* FLV specific private 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_FLV_H
#define AVCODEC_FLV_H
void ff_flv_encode_picture_header(MpegEncContext * s, int picture_number);
void ff_flv2_encode_ac_esc(PutBitContext *pb, int slevel, int level, int run, int last);
#endif

84
libavcodec/flvenc.c Normal file
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@ -0,0 +1,84 @@
/*
* FLV Encoding specific code.
* 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 "flv.h"
void ff_flv_encode_picture_header(MpegEncContext * s, int picture_number)
{
int format;
align_put_bits(&s->pb);
put_bits(&s->pb, 17, 1);
put_bits(&s->pb, 5, (s->h263_flv-1)); /* 0: h263 escape codes 1: 11-bit escape codes */
put_bits(&s->pb, 8, (((int64_t)s->picture_number * 30 * s->avctx->time_base.num) / //FIXME use timestamp
s->avctx->time_base.den) & 0xff); /* TemporalReference */
if (s->width == 352 && s->height == 288)
format = 2;
else if (s->width == 176 && s->height == 144)
format = 3;
else if (s->width == 128 && s->height == 96)
format = 4;
else if (s->width == 320 && s->height == 240)
format = 5;
else if (s->width == 160 && s->height == 120)
format = 6;
else if (s->width <= 255 && s->height <= 255)
format = 0; /* use 1 byte width & height */
else
format = 1; /* use 2 bytes width & height */
put_bits(&s->pb, 3, format); /* PictureSize */
if (format == 0) {
put_bits(&s->pb, 8, s->width);
put_bits(&s->pb, 8, s->height);
} else if (format == 1) {
put_bits(&s->pb, 16, s->width);
put_bits(&s->pb, 16, s->height);
}
put_bits(&s->pb, 2, s->pict_type == FF_P_TYPE); /* PictureType */
put_bits(&s->pb, 1, 1); /* DeblockingFlag: on */
put_bits(&s->pb, 5, s->qscale); /* Quantizer */
put_bits(&s->pb, 1, 0); /* ExtraInformation */
if(s->h263_aic){
s->y_dc_scale_table=
s->c_dc_scale_table= ff_aic_dc_scale_table;
}else{
s->y_dc_scale_table=
s->c_dc_scale_table= ff_mpeg1_dc_scale_table;
}
}
void ff_flv2_encode_ac_esc(PutBitContext *pb, int slevel, int level, int run, int last){
if(level < 64) { // 7-bit level
put_bits(pb, 1, 0);
put_bits(pb, 1, last);
put_bits(pb, 6, run);
put_sbits(pb, 7, slevel);
} else {
/* 11-bit level */
put_bits(pb, 1, 1);
put_bits(pb, 1, last);
put_bits(pb, 6, run);
put_sbits(pb, 11, slevel);
}
}

64
libavcodec/h263.c
View File

@ -41,6 +41,7 @@
#include "mpeg4data.h"
#include "mathops.h"
#include "unary.h"
#include "flv.h"
//#undef NDEBUG
//#include <assert.h>
@ -170,52 +171,6 @@ static av_const int aspect_to_info(AVRational aspect){
return FF_ASPECT_EXTENDED;
}
void ff_flv_encode_picture_header(MpegEncContext * s, int picture_number)
{
int format;
align_put_bits(&s->pb);
put_bits(&s->pb, 17, 1);
put_bits(&s->pb, 5, (s->h263_flv-1)); /* 0: h263 escape codes 1: 11-bit escape codes */
put_bits(&s->pb, 8, (((int64_t)s->picture_number * 30 * s->avctx->time_base.num) / //FIXME use timestamp
s->avctx->time_base.den) & 0xff); /* TemporalReference */
if (s->width == 352 && s->height == 288)
format = 2;
else if (s->width == 176 && s->height == 144)
format = 3;
else if (s->width == 128 && s->height == 96)
format = 4;
else if (s->width == 320 && s->height == 240)
format = 5;
else if (s->width == 160 && s->height == 120)
format = 6;
else if (s->width <= 255 && s->height <= 255)
format = 0; /* use 1 byte width & height */
else
format = 1; /* use 2 bytes width & height */
put_bits(&s->pb, 3, format); /* PictureSize */
if (format == 0) {
put_bits(&s->pb, 8, s->width);
put_bits(&s->pb, 8, s->height);
} else if (format == 1) {
put_bits(&s->pb, 16, s->width);
put_bits(&s->pb, 16, s->height);
}
put_bits(&s->pb, 2, s->pict_type == FF_P_TYPE); /* PictureType */
put_bits(&s->pb, 1, 1); /* DeblockingFlag: on */
put_bits(&s->pb, 5, s->qscale); /* Quantizer */
put_bits(&s->pb, 1, 0); /* ExtraInformation */
if(s->h263_aic){
s->y_dc_scale_table=
s->c_dc_scale_table= ff_aic_dc_scale_table;
}else{
s->y_dc_scale_table=
s->c_dc_scale_table= ff_mpeg1_dc_scale_table;
}
}
void h263_encode_picture_header(MpegEncContext * s, int picture_number)
{
int format, coded_frame_rate, coded_frame_rate_base, i, temp_ref;
@ -1634,7 +1589,7 @@ static void h263_encode_block(MpegEncContext * s, DCTELEM * block, int n)
code = get_rl_index(rl, last, run, level);
put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]);
if (code == rl->n) {
if(s->h263_flv <= 1){
if(!CONFIG_FLV_ENCODER || s->h263_flv <= 1){
put_bits(&s->pb, 1, last);
put_bits(&s->pb, 6, run);
@ -1648,20 +1603,7 @@ static void h263_encode_block(MpegEncContext * s, DCTELEM * block, int n)
put_sbits(&s->pb, 6, slevel>>5);
}
}else{
if(level < 64) { // 7-bit level
put_bits(&s->pb, 1, 0);
put_bits(&s->pb, 1, last);
put_bits(&s->pb, 6, run);
put_sbits(&s->pb, 7, slevel);
} else {
/* 11-bit level */
put_bits(&s->pb, 1, 1);
put_bits(&s->pb, 1, last);
put_bits(&s->pb, 6, run);
put_sbits(&s->pb, 11, slevel);
}
ff_flv2_encode_ac_esc(&s->pb, slevel, level, run, last);
}
} else {
put_bits(&s->pb, 1, sign);

1
libavcodec/mpegvideo.h
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@ -814,7 +814,6 @@ 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);

1
libavcodec/mpegvideo_enc.c
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@ -35,6 +35,7 @@
#include "msmpeg4.h"
#include "faandct.h"
#include "aandcttab.h"
#include "flv.h"
#include <limits.h>
//#undef NDEBUG