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acelp_filters.c
acelp_filters.h
acelp_pitch_delay.c
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acelp_vectors.c
acelp_vectors.h
adpcm.c
adpcm.h
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adpcm_data.h
adpcmenc.c
adx.c
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alac.c
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allcodecs.c
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amr.h
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anm.c
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asv1.c
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audio_frame_queue.c
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audioconvert.c
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aura.c
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avfft.c
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bethsoftvideo.c
bethsoftvideo.h
bfi.c
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cavs_parser.c
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cbrt_tablegen.c
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cdgraphics.c
cdxl.c
celp_filters.c
celp_filters.h
celp_math.c
celp_math.h
cga_data.c
cga_data.h
chomp_bsf.c
cinepak.c
cljr.c
codec_names.sh
cook.c
cook_parser.c
cookdata.h
cos_tablegen.c
crystalhd.c
cscd.c
cyuv.c
dca.c
dca.h
dca_parser.c
dca_parser.h
dcadata.h
dcadsp.c
dcadsp.h
dcaenc.c
dcaenc.h
dcahuff.h
dct-test.c
dct.c
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dct32.c
dct32.h
dct32_fixed.c
dct32_float.c
dctref.c
dctref.h
dfa.c
dirac.c
dirac.h
dirac_arith.c
dirac_arith.h
dirac_parser.c
diracdec.c
diracdsp.c
diracdsp.h
dnxhd_parser.c
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dnxhddata.h
dnxhddec.c
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dpcm.c
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dpxenc.c
dsicinav.c
dsputil.c
dsputil.h
dsputil_template.c
dump_extradata_bsf.c
dv.c
dv_tablegen.c
dv_tablegen.h
dv_vlc_data.h
dvbsub.c
dvbsub_parser.c
dvbsubdec.c
dvdata.c
dvdata.h
dvdec.c
dvdsub_parser.c
dvdsubdec.c
dvdsubenc.c
dwt.c
dwt.h
dxa.c
dxtory.c
dxva2.c
dxva2.h
dxva2_h264.c
dxva2_internal.h
dxva2_mpeg2.c
dxva2_vc1.c
eac3_data.c
eac3_data.h
eac3dec.c
eac3enc.c
eac3enc.h
eacmv.c
eaidct.c
eamad.c
eatgq.c
eatgv.c
eatqi.c
elbg.c
elbg.h
error_resilience.c
escape124.c
escape130.c
exr.c
faandct.c
faandct.h
faanidct.c
faanidct.h
faxcompr.c
faxcompr.h
fft-fixed-test.c
fft-internal.h
fft-test.c
fft.c
fft.h
fft_fixed.c
fft_float.c
ffv1.c
ffwavesynth.c
flac.c
flac.h
flac_parser.c
flacdata.c
flacdata.h
flacdec.c
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flashsv.c
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flashsvenc.c
flicvideo.c
flv.h
flvdec.c
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fmtconvert.c
fmtconvert.h
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frwu.c
g722.c
g722.h
g722dec.c
g722enc.c
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g726.c
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g729postfilter.h
get_bits.h
gif.c
gifdec.c
golomb-test.c
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gsm.h
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gsmdec.c
gsmdec_data.c
gsmdec_data.h
gsmdec_template.c
h261.c
h261.h
h261_parser.c
h261data.c
h261data.h
h261dec.c
h261enc.c
h263.c
h263.h
h263_parser.c
h263_parser.h
h263data.h
h263dec.c
h264.c
h264.h
h264_cabac.c
h264_cavlc.c
h264_direct.c
h264_loopfilter.c
h264_mp4toannexb_bsf.c
h264_mvpred.h
h264_parser.c
h264_ps.c
h264_refs.c
h264_sei.c
h264data.h
h264dsp.c
h264dsp.h
h264dsp_template.c
h264idct.c
h264idct_template.c
h264pred.c
h264pred.h
h264pred_template.c
huffman.c
huffman.h
huffyuv.c
idcinvideo.c
iff.c
iirfilter.c
iirfilter.h
imc.c
imcdata.h
imgconvert.c
imgconvert.h
imx_dump_header_bsf.c
indeo2.c
indeo2data.h
indeo3.c
indeo3data.h
indeo4.c
indeo4data.h
indeo5.c
indeo5data.h
intelh263dec.c
internal.h
interplayvideo.c
intrax8.c
intrax8.h
intrax8dsp.c
intrax8huf.h
inverse.c
ituh263dec.c
ituh263enc.c
ivi_common.c
ivi_common.h
ivi_dsp.c
ivi_dsp.h
j2k.c
j2k.h
j2k_dwt.c
j2k_dwt.h
j2kdec.c
j2kenc.c
jfdctfst.c
jfdctint.c
jfdctint_template.c
jpegls.c
jpegls.h
jpeglsdec.c
jpeglsdec.h
jpeglsenc.c
jrevdct.c
jvdec.c
kbdwin.c
kbdwin.h
kgv1dec.c
kmvc.c
lagarith.c
lagarithrac.c
lagarithrac.h
latm_parser.c
lcl.h
lcldec.c
lclenc.c
libaacplus.c
libavcodec.v
libcelt_dec.c
libdirac_libschro.c
libdirac_libschro.h
libfaac.c
libgsm.c
libmp3lame.c
libopencore-amr.c
libopenjpegdec.c
libopenjpegenc.c
libschroedinger.c
libschroedinger.h
libschroedingerdec.c
libschroedingerenc.c
libspeexdec.c
libspeexenc.c
libstagefright.cpp
libtheoraenc.c
libutvideo.h
libutvideodec.cpp
libutvideoenc.cpp
libvo-aacenc.c
libvo-amrwbenc.c
libvorbis.c
libvpxdec.c
libvpxenc.c
libx264.c
libxavs.c
libxvid_internal.h
libxvid_rc.c
libxvidff.c
ljpegenc.c
loco.c
lpc.c
lpc.h
lsp.c
lsp.h
lzw.c
lzw.h
lzwenc.c
mace.c
mathops.h
mdct.c
mdct_fixed.c
mdct_float.c
mdec.c
microdvddec.c
mimic.c
mjpeg.c
mjpeg.h
mjpeg2jpeg_bsf.c
mjpeg_parser.c
mjpega_dump_header_bsf.c
mjpegbdec.c
mjpegdec.c
mjpegdec.h
mjpegenc.c
mjpegenc.h
mlp.c
mlp.h
mlp_parser.c
mlp_parser.h
mlpdec.c
mlpdsp.c
mmvideo.c
motion-test.c
motion_est.c
motion_est_template.c
motionpixels.c
motionpixels_tablegen.c
motionpixels_tablegen.h
movsub_bsf.c
mp3_header_compress_bsf.c
mp3_header_decompress_bsf.c
mpc.c
mpc.h
mpc7.c
mpc7data.h
mpc8.c
mpc8data.h
mpc8huff.h
mpcdata.h
mpeg12.c
mpeg12.h
mpeg12data.c
mpeg12data.h
mpeg12decdata.h
mpeg12enc.c
mpeg4audio.c
mpeg4audio.h
mpeg4data.h
mpeg4video.c
mpeg4video.h
mpeg4video_parser.c
mpeg4video_parser.h
mpeg4videodec.c
mpeg4videoenc.c
mpegaudio.c
mpegaudio.h
mpegaudio_parser.c
mpegaudio_tablegen.c
mpegaudio_tablegen.h
mpegaudiodata.c
mpegaudiodata.h
mpegaudiodec.c
mpegaudiodec_float.c
mpegaudiodecheader.c
mpegaudiodecheader.h
mpegaudiodectab.h
mpegaudiodsp.c
mpegaudiodsp.h
mpegaudiodsp_fixed.c
mpegaudiodsp_float.c
mpegaudiodsp_template.c
mpegaudioenc.c
mpegaudiotab.h
mpegvideo.c
mpegvideo.h
mpegvideo_common.h
mpegvideo_enc.c
mpegvideo_parser.c
mpegvideo_xvmc.c
mqc.c
mqc.h
mqcdec.c
mqcenc.c
msgsmdec.c
msgsmdec.h
msmpeg4.c
msmpeg4.h
msmpeg4data.c
msmpeg4data.h
msmpeg4enc.c
msrle.c
msrledec.c
msrledec.h
msvideo1.c
msvideo1enc.c
mxpegdec.c
nellymoser.c
nellymoser.h
nellymoserdec.c
nellymoserenc.c
noise_bsf.c
nuv.c
options.c
options_table.h
os2threads.h
pamenc.c
parser.c
parser.h
pcm-mpeg.c
pcm.c
pcm_tablegen.c
pcm_tablegen.h
pcx.c
pcxenc.c
pgssubdec.c
pictordec.c
png.c
png.h
pngdec.c
pngdsp.c
pngdsp.h
pngenc.c
pnm.c
pnm.h
pnm_parser.c
pnmdec.c
pnmenc.c
proresdata.c
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proresdec.h
proresdec2.c
proresdec_lgpl.c
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proresdsp.h
proresenc_anatoliy.c
proresenc_kostya.c
psymodel.c
psymodel.h
pthread.c
ptx.c
put_bits.h
qcelpdata.h
qcelpdec.c
qdm2.c
qdm2_tablegen.c
qdm2_tablegen.h
qdm2data.h
qdrw.c
qpeg.c
qtrle.c
qtrleenc.c
r210dec.c
r210enc.c
ra144.c
ra144.h
ra144dec.c
ra144enc.c
ra288.c
ra288.h
ralf.c
ralfdata.h
rangecoder.c
rangecoder.h
ratecontrol.c
ratecontrol.h
raw.c
raw.h
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rawenc.c
rdft.c
rdft.h
rectangle.h
remove_extradata_bsf.c
resample.c
resample2.c
rl.h
rl2.c
rle.c
rle.h
roqaudioenc.c
roqvideo.c
roqvideo.h
roqvideodec.c
roqvideoenc.c
rpza.c
rtjpeg.c
rtjpeg.h
rv10.c
rv10enc.c
rv20enc.c
rv30.c
rv30data.h
rv30dsp.c
rv34.c
rv34.h
rv34_parser.c
rv34data.h
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rv34vlc.h
rv40.c
rv40data.h
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rv40vlc2.h
s302m.c
s3tc.c
s3tc.h
sbr.h
sbrdsp.c
sbrdsp.h
sgi.h
sgidec.c
sgienc.c
shorten.c
simple_idct.c
simple_idct.h
simple_idct_template.c
sinewin.c
sinewin.h
sinewin_tablegen.c
sinewin_tablegen.h
sipr.c
sipr.h
sipr16k.c
sipr16kdata.h
siprdata.h
smacker.c
smc.c
snow.c
snow.h
snowdata.h
snowdec.c
snowenc.c
sonic.c
sp5x.h
sp5xdec.c
srtdec.c
srtenc.c
sunrast.c
sunrast.h
sunrastenc.c
svq1.c
svq1.h
svq1_cb.h
svq1_vlc.h
svq1dec.c
svq1enc.c
svq1enc_cb.h
svq3.c
synth_filter.c
synth_filter.h
tableprint.h
targa.c
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targaenc.c
thread.h
tiertexseqv.c
tiff.c
tiff.h
tiffenc.c
timecode.c
timecode.h
tmv.c
truemotion1.c
truemotion1data.h
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truespeech.c
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txd.c
ulti.c
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unary.h
utils.c
utvideo.c
v210dec.c
v210dec.h
v210enc.c
v210x.c
v308dec.c
v308enc.c
v408dec.c
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vaapi.c
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vaapi_mpeg2.c
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FFmpeg/libavcodec/mpeg12enc.c

997 lines
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/*
* MPEG1/2 encoder
* Copyright (c) 2000,2001 Fabrice Bellard
* Copyright (c) 2002-2004 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
*/
/**
* @file
* MPEG1/2 encoder
*/
#include "avcodec.h"
#include "dsputil.h"
#include "mathops.h"
#include "mpegvideo.h"
#include "mpeg12.h"
#include "mpeg12data.h"
#include "bytestream.h"
#include "libavutil/log.h"
#include "libavutil/opt.h"
#include "libavutil/avassert.h"
#include "libavutil/timecode.h"
static const uint8_t inv_non_linear_qscale[13] = {
0, 2, 4, 6, 8,
9,10,11,12,13,14,15,16,
};
static const uint8_t svcd_scan_offset_placeholder[14] = {
0x10, 0x0E,
0x00, 0x80, 0x81,
0x00, 0x80, 0x81,
0xff, 0xff, 0xff,
0xff, 0xff, 0xff,
};
static void mpeg1_encode_block(MpegEncContext *s,
DCTELEM *block,
int component);
static void mpeg1_encode_motion(MpegEncContext *s, int val, int f_or_b_code); // RAL: f_code parameter added
static uint8_t mv_penalty[MAX_FCODE+1][MAX_MV*2+1];
static uint8_t fcode_tab[MAX_MV*2+1];
static uint8_t uni_mpeg1_ac_vlc_len [64*64*2];
static uint8_t uni_mpeg2_ac_vlc_len [64*64*2];
/* simple include everything table for dc, first byte is bits number next 3 are code*/
static uint32_t mpeg1_lum_dc_uni[512];
static uint32_t mpeg1_chr_dc_uni[512];
static uint8_t mpeg1_index_run[2][64];
static int8_t mpeg1_max_level[2][64];
static void init_uni_ac_vlc(RLTable *rl, uint8_t *uni_ac_vlc_len){
int i;
for(i=0; i<128; i++){
int level= i-64;
int run;
if (!level)
continue;
for(run=0; run<64; run++){
int len, code;
int alevel= FFABS(level);
if (alevel > rl->max_level[0][run])
code= 111; /*rl->n*/
else
code= rl->index_run[0][run] + alevel - 1;
if (code < 111 /* rl->n */) {
/* length of vlc and sign */
len= rl->table_vlc[code][1]+1;
} else {
len= rl->table_vlc[111/*rl->n*/][1]+6;
if (alevel < 128) {
len += 8;
} else {
len += 16;
}
}
uni_ac_vlc_len [UNI_AC_ENC_INDEX(run, i)]= len;
}
}
}
static int find_frame_rate_index(MpegEncContext *s){
int i;
int64_t dmin= INT64_MAX;
int64_t d;
for(i=1;i<14;i++) {
int64_t n0= 1001LL/avpriv_frame_rate_tab[i].den*avpriv_frame_rate_tab[i].num*s->avctx->time_base.num;
int64_t n1= 1001LL*s->avctx->time_base.den;
if(s->avctx->strict_std_compliance > FF_COMPLIANCE_UNOFFICIAL && i>=9) break;
d = FFABS(n0 - n1);
if(d < dmin){
dmin=d;
s->frame_rate_index= i;
}
}
if(dmin)
return -1;
else
return 0;
}
static av_cold int encode_init(AVCodecContext *avctx)
{
MpegEncContext *s = avctx->priv_data;
if(ff_MPV_encode_init(avctx) < 0)
return -1;
if(find_frame_rate_index(s) < 0){
if(s->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL){
av_log(avctx, AV_LOG_ERROR, "MPEG1/2 does not support %d/%d fps\n", avctx->time_base.den, avctx->time_base.num);
return -1;
}else{
av_log(avctx, AV_LOG_INFO, "MPEG1/2 does not support %d/%d fps, there may be AV sync issues\n", avctx->time_base.den, avctx->time_base.num);
}
}
if(avctx->profile == FF_PROFILE_UNKNOWN){
if(avctx->level != FF_LEVEL_UNKNOWN){
av_log(avctx, AV_LOG_ERROR, "Set profile and level\n");
return -1;
}
avctx->profile = s->chroma_format == CHROMA_420 ? 4 : 0; /* Main or 4:2:2 */
}
if(avctx->level == FF_LEVEL_UNKNOWN){
if(avctx->profile == 0){ /* 4:2:2 */
if(avctx->width <= 720 && avctx->height <= 608) avctx->level = 5; /* Main */
else avctx->level = 2; /* High */
}else{
if(avctx->profile != 1 && s->chroma_format != CHROMA_420){
av_log(avctx, AV_LOG_ERROR, "Only High(1) and 4:2:2(0) profiles support 4:2:2 color sampling\n");
return -1;
}
if(avctx->width <= 720 && avctx->height <= 576) avctx->level = 8; /* Main */
else if(avctx->width <= 1440) avctx->level = 6; /* High 1440 */
else avctx->level = 4; /* High */
}
}
s->drop_frame_timecode = s->drop_frame_timecode || !!(avctx->flags2 & CODEC_FLAG2_DROP_FRAME_TIMECODE);
if (s->drop_frame_timecode)
s->tc.flags |= AV_TIMECODE_FLAG_DROPFRAME;
if (s->drop_frame_timecode && s->frame_rate_index != 4) {
av_log(avctx, AV_LOG_ERROR, "Drop frame time code only allowed with 1001/30000 fps\n");
return -1;
}
if (s->tc_opt_str) {
AVRational rate = avpriv_frame_rate_tab[s->frame_rate_index];
int ret = av_timecode_init_from_string(&s->tc, rate, s->tc_opt_str, s);
if (ret < 0)
return ret;
s->drop_frame_timecode = !!(s->tc.flags & AV_TIMECODE_FLAG_DROPFRAME);
s->avctx->timecode_frame_start = s->tc.start;
} else {
s->avctx->timecode_frame_start = 0; // default is -1
}
return 0;
}
static void put_header(MpegEncContext *s, int header)
{
avpriv_align_put_bits(&s->pb);
put_bits(&s->pb, 16, header>>16);
put_sbits(&s->pb, 16, header);
}
/* put sequence header if needed */
static void mpeg1_encode_sequence_header(MpegEncContext *s)
{
unsigned int vbv_buffer_size;
unsigned int fps, v;
int i;
uint64_t time_code;
float best_aspect_error= 1E10;
float aspect_ratio= av_q2d(s->avctx->sample_aspect_ratio);
int constraint_parameter_flag;
if(aspect_ratio==0.0) aspect_ratio= 1.0; //pixel aspect 1:1 (VGA)
if (s->current_picture.f.key_frame) {
AVRational framerate= avpriv_frame_rate_tab[s->frame_rate_index];
/* mpeg1 header repeated every gop */
put_header(s, SEQ_START_CODE);
put_sbits(&s->pb, 12, s->width );
put_sbits(&s->pb, 12, s->height);
for(i=1; i<15; i++){
float error= aspect_ratio;
if(s->codec_id == CODEC_ID_MPEG1VIDEO || i <=1)
error-= 1.0/ff_mpeg1_aspect[i];
else
error-= av_q2d(ff_mpeg2_aspect[i])*s->height/s->width;
error= FFABS(error);
if(error < best_aspect_error){
best_aspect_error= error;
s->aspect_ratio_info= i;
}
}
put_bits(&s->pb, 4, s->aspect_ratio_info);
put_bits(&s->pb, 4, s->frame_rate_index);
if(s->avctx->rc_max_rate){
v = (s->avctx->rc_max_rate + 399) / 400;
if (v > 0x3ffff && s->codec_id == CODEC_ID_MPEG1VIDEO)
v = 0x3ffff;
}else{
v= 0x3FFFF;
}
if(s->avctx->rc_buffer_size)
vbv_buffer_size = s->avctx->rc_buffer_size;
else
/* VBV calculation: Scaled so that a VCD has the proper VBV size of 40 kilobytes */
vbv_buffer_size = (( 20 * s->bit_rate) / (1151929 / 2)) * 8 * 1024;
vbv_buffer_size= (vbv_buffer_size + 16383) / 16384;
put_sbits(&s->pb, 18, v);
put_bits(&s->pb, 1, 1); /* marker */
put_sbits(&s->pb, 10, vbv_buffer_size);
constraint_parameter_flag=
s->width <= 768 && s->height <= 576 &&
s->mb_width * s->mb_height <= 396 &&
s->mb_width * s->mb_height * framerate.num <= framerate.den*396*25 &&
framerate.num <= framerate.den*30 &&
s->avctx->me_range && s->avctx->me_range < 128 &&
vbv_buffer_size <= 20 &&
v <= 1856000/400 &&
s->codec_id == CODEC_ID_MPEG1VIDEO;
put_bits(&s->pb, 1, constraint_parameter_flag);
ff_write_quant_matrix(&s->pb, s->avctx->intra_matrix);
ff_write_quant_matrix(&s->pb, s->avctx->inter_matrix);
if(s->codec_id == CODEC_ID_MPEG2VIDEO){
put_header(s, EXT_START_CODE);
put_bits(&s->pb, 4, 1); //seq ext
put_bits(&s->pb, 1, s->avctx->profile == 0); //escx 1 for 4:2:2 profile */
put_bits(&s->pb, 3, s->avctx->profile); //profile
put_bits(&s->pb, 4, s->avctx->level); //level
put_bits(&s->pb, 1, s->progressive_sequence);
put_bits(&s->pb, 2, s->chroma_format);
put_bits(&s->pb, 2, s->width >>12);
put_bits(&s->pb, 2, s->height>>12);
put_bits(&s->pb, 12, v>>18); //bitrate ext
put_bits(&s->pb, 1, 1); //marker
put_bits(&s->pb, 8, vbv_buffer_size >>10); //vbv buffer ext
put_bits(&s->pb, 1, s->low_delay);
put_bits(&s->pb, 2, 0); // frame_rate_ext_n
put_bits(&s->pb, 5, 0); // frame_rate_ext_d
}
put_header(s, GOP_START_CODE);
put_bits(&s->pb, 1, s->drop_frame_timecode); /* drop frame flag */
/* time code : we must convert from the real frame rate to a
fake mpeg frame rate in case of low frame rate */
fps = (framerate.num + framerate.den/2)/ framerate.den;
time_code = s->current_picture_ptr->f.coded_picture_number + s->avctx->timecode_frame_start;
s->gop_picture_number = s->current_picture_ptr->f.coded_picture_number;
av_assert0(s->drop_frame_timecode == !!(s->tc.flags & AV_TIMECODE_FLAG_DROPFRAME));
if (s->drop_frame_timecode)
time_code = av_timecode_adjust_ntsc_framenum(time_code);
put_bits(&s->pb, 5, (uint32_t)((time_code / (fps * 3600)) % 24));
put_bits(&s->pb, 6, (uint32_t)((time_code / (fps * 60)) % 60));
put_bits(&s->pb, 1, 1);
put_bits(&s->pb, 6, (uint32_t)((time_code / fps) % 60));
put_bits(&s->pb, 6, (uint32_t)((time_code % fps)));
put_bits(&s->pb, 1, !!(s->flags & CODEC_FLAG_CLOSED_GOP));
put_bits(&s->pb, 1, 0); /* broken link */
}
}
static inline void encode_mb_skip_run(MpegEncContext *s, int run){
while (run >= 33) {
put_bits(&s->pb, 11, 0x008);
run -= 33;
}
put_bits(&s->pb, ff_mpeg12_mbAddrIncrTable[run][1],
ff_mpeg12_mbAddrIncrTable[run][0]);
}
static av_always_inline void put_qscale(MpegEncContext *s)
{
if(s->q_scale_type){
assert(s->qscale>=1 && s->qscale <=12);
put_bits(&s->pb, 5, inv_non_linear_qscale[s->qscale]);
}else{
put_bits(&s->pb, 5, s->qscale);
}
}
void ff_mpeg1_encode_slice_header(MpegEncContext *s){
if (s->height > 2800) {
put_header(s, SLICE_MIN_START_CODE + (s->mb_y & 127));
put_bits(&s->pb, 3, s->mb_y >> 7); /* slice_vertical_position_extension */
} else {
put_header(s, SLICE_MIN_START_CODE + s->mb_y);
}
put_qscale(s);
put_bits(&s->pb, 1, 0); /* slice extra information */
}
void ff_mpeg1_encode_picture_header(MpegEncContext *s, int picture_number)
{
mpeg1_encode_sequence_header(s);
/* mpeg1 picture header */
put_header(s, PICTURE_START_CODE);
/* temporal reference */
// RAL: s->picture_number instead of s->fake_picture_number
put_bits(&s->pb, 10, (s->picture_number -
s->gop_picture_number) & 0x3ff);
put_bits(&s->pb, 3, s->pict_type);
s->vbv_delay_ptr= s->pb.buf + put_bits_count(&s->pb)/8;
put_bits(&s->pb, 16, 0xFFFF); /* vbv_delay */
// RAL: Forward f_code also needed for B frames
if (s->pict_type == AV_PICTURE_TYPE_P || s->pict_type == AV_PICTURE_TYPE_B) {
put_bits(&s->pb, 1, 0); /* half pel coordinates */
if(s->codec_id == CODEC_ID_MPEG1VIDEO)
put_bits(&s->pb, 3, s->f_code); /* forward_f_code */
else
put_bits(&s->pb, 3, 7); /* forward_f_code */
}
// RAL: Backward f_code necessary for B frames
if (s->pict_type == AV_PICTURE_TYPE_B) {
put_bits(&s->pb, 1, 0); /* half pel coordinates */
if(s->codec_id == CODEC_ID_MPEG1VIDEO)
put_bits(&s->pb, 3, s->b_code); /* backward_f_code */
else
put_bits(&s->pb, 3, 7); /* backward_f_code */
}
put_bits(&s->pb, 1, 0); /* extra bit picture */
s->frame_pred_frame_dct = 1;
if(s->codec_id == CODEC_ID_MPEG2VIDEO){
put_header(s, EXT_START_CODE);
put_bits(&s->pb, 4, 8); //pic ext
if (s->pict_type == AV_PICTURE_TYPE_P || s->pict_type == AV_PICTURE_TYPE_B) {
put_bits(&s->pb, 4, s->f_code);
put_bits(&s->pb, 4, s->f_code);
}else{
put_bits(&s->pb, 8, 255);
}
if (s->pict_type == AV_PICTURE_TYPE_B) {
put_bits(&s->pb, 4, s->b_code);
put_bits(&s->pb, 4, s->b_code);
}else{
put_bits(&s->pb, 8, 255);
}
put_bits(&s->pb, 2, s->intra_dc_precision);
assert(s->picture_structure == PICT_FRAME);
put_bits(&s->pb, 2, s->picture_structure);
if (s->progressive_sequence) {
put_bits(&s->pb, 1, 0); /* no repeat */
} else {
put_bits(&s->pb, 1, s->current_picture_ptr->f.top_field_first);
}
/* XXX: optimize the generation of this flag with entropy
measures */
s->frame_pred_frame_dct = s->progressive_sequence;
put_bits(&s->pb, 1, s->frame_pred_frame_dct);
put_bits(&s->pb, 1, s->concealment_motion_vectors);
put_bits(&s->pb, 1, s->q_scale_type);
put_bits(&s->pb, 1, s->intra_vlc_format);
put_bits(&s->pb, 1, s->alternate_scan);
put_bits(&s->pb, 1, s->repeat_first_field);
s->progressive_frame = s->progressive_sequence;
put_bits(&s->pb, 1, s->chroma_format == CHROMA_420 ? s->progressive_frame : 0); /* chroma_420_type */
put_bits(&s->pb, 1, s->progressive_frame);
put_bits(&s->pb, 1, 0); //composite_display_flag
}
if (s->scan_offset) {
int i;
put_header(s, USER_START_CODE);
for(i=0; i<sizeof(svcd_scan_offset_placeholder); i++){
put_bits(&s->pb, 8, svcd_scan_offset_placeholder[i]);
}
}
s->mb_y=0;
ff_mpeg1_encode_slice_header(s);
}
static inline void put_mb_modes(MpegEncContext *s, int n, int bits,
int has_mv, int field_motion)
{
put_bits(&s->pb, n, bits);
if (!s->frame_pred_frame_dct) {
if (has_mv)
put_bits(&s->pb, 2, 2 - field_motion); /* motion_type: frame/field */
put_bits(&s->pb, 1, s->interlaced_dct);
}
}
static av_always_inline void mpeg1_encode_mb_internal(MpegEncContext *s,
DCTELEM block[6][64],
int motion_x, int motion_y,
int mb_block_count)
{
int i, cbp;
const int mb_x = s->mb_x;
const int mb_y = s->mb_y;
const int first_mb= mb_x == s->resync_mb_x && mb_y == s->resync_mb_y;
/* compute cbp */
cbp = 0;
for(i=0;i<mb_block_count;i++) {
if (s->block_last_index[i] >= 0)
cbp |= 1 << (mb_block_count - 1 - i);
}
if (cbp == 0 && !first_mb && s->mv_type == MV_TYPE_16X16 &&
(mb_x != s->mb_width - 1 || (mb_y != s->mb_height - 1 && s->codec_id == CODEC_ID_MPEG1VIDEO)) &&
((s->pict_type == AV_PICTURE_TYPE_P && (motion_x | motion_y) == 0) ||
(s->pict_type == AV_PICTURE_TYPE_B && s->mv_dir == s->last_mv_dir && (((s->mv_dir & MV_DIR_FORWARD) ? ((s->mv[0][0][0] - s->last_mv[0][0][0])|(s->mv[0][0][1] - s->last_mv[0][0][1])) : 0) |
((s->mv_dir & MV_DIR_BACKWARD) ? ((s->mv[1][0][0] - s->last_mv[1][0][0])|(s->mv[1][0][1] - s->last_mv[1][0][1])) : 0)) == 0))) {
s->mb_skip_run++;
s->qscale -= s->dquant;
s->skip_count++;
s->misc_bits++;
s->last_bits++;
if(s->pict_type == AV_PICTURE_TYPE_P){
s->last_mv[0][1][0]= s->last_mv[0][0][0]=
s->last_mv[0][1][1]= s->last_mv[0][0][1]= 0;
}
} else {
if(first_mb){
assert(s->mb_skip_run == 0);
encode_mb_skip_run(s, s->mb_x);
}else{
encode_mb_skip_run(s, s->mb_skip_run);
}
if (s->pict_type == AV_PICTURE_TYPE_I) {
if(s->dquant && cbp){
put_mb_modes(s, 2, 1, 0, 0); /* macroblock_type : macroblock_quant = 1 */
put_qscale(s);
}else{
put_mb_modes(s, 1, 1, 0, 0); /* macroblock_type : macroblock_quant = 0 */
s->qscale -= s->dquant;
}
s->misc_bits+= get_bits_diff(s);
s->i_count++;
} else if (s->mb_intra) {
if(s->dquant && cbp){
put_mb_modes(s, 6, 0x01, 0, 0);
put_qscale(s);
}else{
put_mb_modes(s, 5, 0x03, 0, 0);
s->qscale -= s->dquant;
}
s->misc_bits+= get_bits_diff(s);
s->i_count++;
memset(s->last_mv, 0, sizeof(s->last_mv));
} else if (s->pict_type == AV_PICTURE_TYPE_P) {
if(s->mv_type == MV_TYPE_16X16){
if (cbp != 0) {
if ((motion_x|motion_y) == 0) {
if(s->dquant){
put_mb_modes(s, 5, 1, 0, 0); /* macroblock_pattern & quant */
put_qscale(s);
}else{
put_mb_modes(s, 2, 1, 0, 0); /* macroblock_pattern only */
}
s->misc_bits+= get_bits_diff(s);
} else {
if(s->dquant){
put_mb_modes(s, 5, 2, 1, 0); /* motion + cbp */
put_qscale(s);
}else{
put_mb_modes(s, 1, 1, 1, 0); /* motion + cbp */
}
s->misc_bits+= get_bits_diff(s);
mpeg1_encode_motion(s, motion_x - s->last_mv[0][0][0], s->f_code); // RAL: f_code parameter added
mpeg1_encode_motion(s, motion_y - s->last_mv[0][0][1], s->f_code); // RAL: f_code parameter added
s->mv_bits+= get_bits_diff(s);
}
} else {
put_bits(&s->pb, 3, 1); /* motion only */
if (!s->frame_pred_frame_dct)
put_bits(&s->pb, 2, 2); /* motion_type: frame */
s->misc_bits+= get_bits_diff(s);
mpeg1_encode_motion(s, motion_x - s->last_mv[0][0][0], s->f_code); // RAL: f_code parameter added
mpeg1_encode_motion(s, motion_y - s->last_mv[0][0][1], s->f_code); // RAL: f_code parameter added
s->qscale -= s->dquant;
s->mv_bits+= get_bits_diff(s);
}
s->last_mv[0][1][0]= s->last_mv[0][0][0]= motion_x;
s->last_mv[0][1][1]= s->last_mv[0][0][1]= motion_y;
}else{
assert(!s->frame_pred_frame_dct && s->mv_type == MV_TYPE_FIELD);
if (cbp) {
if(s->dquant){
put_mb_modes(s, 5, 2, 1, 1); /* motion + cbp */
put_qscale(s);
}else{
put_mb_modes(s, 1, 1, 1, 1); /* motion + cbp */
}
} else {
put_bits(&s->pb, 3, 1); /* motion only */
put_bits(&s->pb, 2, 1); /* motion_type: field */
s->qscale -= s->dquant;
}
s->misc_bits+= get_bits_diff(s);
for(i=0; i<2; i++){
put_bits(&s->pb, 1, s->field_select[0][i]);
mpeg1_encode_motion(s, s->mv[0][i][0] - s->last_mv[0][i][0] , s->f_code);
mpeg1_encode_motion(s, s->mv[0][i][1] - (s->last_mv[0][i][1]>>1), s->f_code);
s->last_mv[0][i][0]= s->mv[0][i][0];
s->last_mv[0][i][1]= 2*s->mv[0][i][1];
}
s->mv_bits+= get_bits_diff(s);
}
if(cbp) {
if (s->chroma_y_shift) {
put_bits(&s->pb, ff_mpeg12_mbPatTable[cbp][1], ff_mpeg12_mbPatTable[cbp][0]);
} else {
put_bits(&s->pb, ff_mpeg12_mbPatTable[cbp>>2][1], ff_mpeg12_mbPatTable[cbp>>2][0]);
put_sbits(&s->pb, 2, cbp);
}
}
s->f_count++;
} else{
if(s->mv_type == MV_TYPE_16X16){
if (cbp){ // With coded bloc pattern
if (s->dquant) {
if(s->mv_dir == MV_DIR_FORWARD)
put_mb_modes(s, 6, 3, 1, 0);
else
put_mb_modes(s, 8-s->mv_dir, 2, 1, 0);
put_qscale(s);
} else {
put_mb_modes(s, 5-s->mv_dir, 3, 1, 0);
}
}else{ // No coded bloc pattern
put_bits(&s->pb, 5-s->mv_dir, 2);
if (!s->frame_pred_frame_dct)
put_bits(&s->pb, 2, 2); /* motion_type: frame */
s->qscale -= s->dquant;
}
s->misc_bits += get_bits_diff(s);
if (s->mv_dir&MV_DIR_FORWARD){
mpeg1_encode_motion(s, s->mv[0][0][0] - s->last_mv[0][0][0], s->f_code);
mpeg1_encode_motion(s, s->mv[0][0][1] - s->last_mv[0][0][1], s->f_code);
s->last_mv[0][0][0]=s->last_mv[0][1][0]= s->mv[0][0][0];
s->last_mv[0][0][1]=s->last_mv[0][1][1]= s->mv[0][0][1];
s->f_count++;
}
if (s->mv_dir&MV_DIR_BACKWARD){
mpeg1_encode_motion(s, s->mv[1][0][0] - s->last_mv[1][0][0], s->b_code);
mpeg1_encode_motion(s, s->mv[1][0][1] - s->last_mv[1][0][1], s->b_code);
s->last_mv[1][0][0]=s->last_mv[1][1][0]= s->mv[1][0][0];
s->last_mv[1][0][1]=s->last_mv[1][1][1]= s->mv[1][0][1];
s->b_count++;
}
}else{
assert(s->mv_type == MV_TYPE_FIELD);
assert(!s->frame_pred_frame_dct);
if (cbp){ // With coded bloc pattern
if (s->dquant) {
if(s->mv_dir == MV_DIR_FORWARD)
put_mb_modes(s, 6, 3, 1, 1);
else
put_mb_modes(s, 8-s->mv_dir, 2, 1, 1);
put_qscale(s);
} else {
put_mb_modes(s, 5-s->mv_dir, 3, 1, 1);
}
}else{ // No coded bloc pattern
put_bits(&s->pb, 5-s->mv_dir, 2);
put_bits(&s->pb, 2, 1); /* motion_type: field */
s->qscale -= s->dquant;
}
s->misc_bits += get_bits_diff(s);
if (s->mv_dir&MV_DIR_FORWARD){
for(i=0; i<2; i++){
put_bits(&s->pb, 1, s->field_select[0][i]);
mpeg1_encode_motion(s, s->mv[0][i][0] - s->last_mv[0][i][0] , s->f_code);
mpeg1_encode_motion(s, s->mv[0][i][1] - (s->last_mv[0][i][1]>>1), s->f_code);
s->last_mv[0][i][0]= s->mv[0][i][0];
s->last_mv[0][i][1]= 2*s->mv[0][i][1];
}
s->f_count++;
}
if (s->mv_dir&MV_DIR_BACKWARD){
for(i=0; i<2; i++){
put_bits(&s->pb, 1, s->field_select[1][i]);
mpeg1_encode_motion(s, s->mv[1][i][0] - s->last_mv[1][i][0] , s->b_code);
mpeg1_encode_motion(s, s->mv[1][i][1] - (s->last_mv[1][i][1]>>1), s->b_code);
s->last_mv[1][i][0]= s->mv[1][i][0];
s->last_mv[1][i][1]= 2*s->mv[1][i][1];
}
s->b_count++;
}
}
s->mv_bits += get_bits_diff(s);
if(cbp) {
if (s->chroma_y_shift) {
put_bits(&s->pb, ff_mpeg12_mbPatTable[cbp][1], ff_mpeg12_mbPatTable[cbp][0]);
} else {
put_bits(&s->pb, ff_mpeg12_mbPatTable[cbp>>2][1], ff_mpeg12_mbPatTable[cbp>>2][0]);
put_sbits(&s->pb, 2, cbp);
}
}
}
for(i=0;i<mb_block_count;i++) {
if (cbp & (1 << (mb_block_count - 1 - i))) {
mpeg1_encode_block(s, block[i], i);
}
}
s->mb_skip_run = 0;
if(s->mb_intra)
s->i_tex_bits+= get_bits_diff(s);
else
s->p_tex_bits+= get_bits_diff(s);
}
}
void ff_mpeg1_encode_mb(MpegEncContext *s, DCTELEM block[6][64], int motion_x, int motion_y)
{
if (s->chroma_format == CHROMA_420) mpeg1_encode_mb_internal(s, block, motion_x, motion_y, 6);
else mpeg1_encode_mb_internal(s, block, motion_x, motion_y, 8);
}
// RAL: Parameter added: f_or_b_code
static void mpeg1_encode_motion(MpegEncContext *s, int val, int f_or_b_code)
{
if (val == 0) {
/* zero vector */
put_bits(&s->pb,
ff_mpeg12_mbMotionVectorTable[0][1],
ff_mpeg12_mbMotionVectorTable[0][0]);
} else {
int code, sign, bits;
int bit_size = f_or_b_code - 1;
int range = 1 << bit_size;
/* modulo encoding */
val = sign_extend(val, 5 + bit_size);
if (val >= 0) {
val--;
code = (val >> bit_size) + 1;
bits = val & (range - 1);
sign = 0;
} else {
val = -val;
val--;
code = (val >> bit_size) + 1;
bits = val & (range - 1);
sign = 1;
}
assert(code > 0 && code <= 16);
put_bits(&s->pb,
ff_mpeg12_mbMotionVectorTable[code][1],
ff_mpeg12_mbMotionVectorTable[code][0]);
put_bits(&s->pb, 1, sign);
if (bit_size > 0) {
put_bits(&s->pb, bit_size, bits);
}
}
}
void ff_mpeg1_encode_init(MpegEncContext *s)
{
static int done=0;
ff_mpeg12_common_init(s);
if(!done){
int f_code;
int mv;
int i;
done=1;
ff_init_rl(&ff_rl_mpeg1, ff_mpeg12_static_rl_table_store[0]);
ff_init_rl(&ff_rl_mpeg2, ff_mpeg12_static_rl_table_store[1]);
for(i=0; i<64; i++)
{
mpeg1_max_level[0][i]= ff_rl_mpeg1.max_level[0][i];
mpeg1_index_run[0][i]= ff_rl_mpeg1.index_run[0][i];
}
init_uni_ac_vlc(&ff_rl_mpeg1, uni_mpeg1_ac_vlc_len);
if(s->intra_vlc_format)
init_uni_ac_vlc(&ff_rl_mpeg2, uni_mpeg2_ac_vlc_len);
/* build unified dc encoding tables */
for(i=-255; i<256; i++)
{
int adiff, index;
int bits, code;
int diff=i;
adiff = FFABS(diff);
if(diff<0) diff--;
index = av_log2(2*adiff);
bits= ff_mpeg12_vlc_dc_lum_bits[index] + index;
code= (ff_mpeg12_vlc_dc_lum_code[index]<<index) + (diff & ((1 << index) - 1));
mpeg1_lum_dc_uni[i+255]= bits + (code<<8);
bits= ff_mpeg12_vlc_dc_chroma_bits[index] + index;
code= (ff_mpeg12_vlc_dc_chroma_code[index]<<index) + (diff & ((1 << index) - 1));
mpeg1_chr_dc_uni[i+255]= bits + (code<<8);
}
for(f_code=1; f_code<=MAX_FCODE; f_code++){
for(mv=-MAX_MV; mv<=MAX_MV; mv++){
int len;
if(mv==0) len= ff_mpeg12_mbMotionVectorTable[0][1];
else{
2011-06-01 17:26:27 +01:00
int val, bit_size, code;
bit_size = f_code - 1;
val=mv;
if (val < 0)
val = -val;
val--;
code = (val >> bit_size) + 1;
if(code<17){
len= ff_mpeg12_mbMotionVectorTable[code][1] + 1 + bit_size;
}else{
len= ff_mpeg12_mbMotionVectorTable[16][1] + 2 + bit_size;
}
}
mv_penalty[f_code][mv+MAX_MV]= len;
}
}
for(f_code=MAX_FCODE; f_code>0; f_code--){
for(mv=-(8<<f_code); mv<(8<<f_code); mv++){
fcode_tab[mv+MAX_MV]= f_code;
}
}
}
s->me.mv_penalty= mv_penalty;
s->fcode_tab= fcode_tab;
if(s->codec_id == CODEC_ID_MPEG1VIDEO){
s->min_qcoeff=-255;
s->max_qcoeff= 255;
}else{
s->min_qcoeff=-2047;
s->max_qcoeff= 2047;
}
if (s->intra_vlc_format) {
s->intra_ac_vlc_length=
s->intra_ac_vlc_last_length= uni_mpeg2_ac_vlc_len;
} else {
s->intra_ac_vlc_length=
s->intra_ac_vlc_last_length= uni_mpeg1_ac_vlc_len;
}
s->inter_ac_vlc_length=
s->inter_ac_vlc_last_length= uni_mpeg1_ac_vlc_len;
}
static inline void encode_dc(MpegEncContext *s, int diff, int component)
{
if(((unsigned) (diff+255)) >= 511){
int index;
if(diff<0){
index= av_log2_16bit(-2*diff);
diff--;
}else{
index= av_log2_16bit(2*diff);
}
if (component == 0) {
put_bits(
&s->pb,
ff_mpeg12_vlc_dc_lum_bits[index] + index,
(ff_mpeg12_vlc_dc_lum_code[index]<<index) + (diff & ((1 << index) - 1)));
}else{
put_bits(
&s->pb,
ff_mpeg12_vlc_dc_chroma_bits[index] + index,
(ff_mpeg12_vlc_dc_chroma_code[index]<<index) + (diff & ((1 << index) - 1)));
}
}else{
if (component == 0) {
put_bits(
&s->pb,
mpeg1_lum_dc_uni[diff+255]&0xFF,
mpeg1_lum_dc_uni[diff+255]>>8);
} else {
put_bits(
&s->pb,
mpeg1_chr_dc_uni[diff+255]&0xFF,
mpeg1_chr_dc_uni[diff+255]>>8);
}
}
}
static void mpeg1_encode_block(MpegEncContext *s,
DCTELEM *block,
int n)
{
int alevel, level, last_non_zero, dc, diff, i, j, run, last_index, sign;
int code, component;
const uint16_t (*table_vlc)[2] = ff_rl_mpeg1.table_vlc;
last_index = s->block_last_index[n];
/* DC coef */
if (s->mb_intra) {
component = (n <= 3 ? 0 : (n&1) + 1);
dc = block[0]; /* overflow is impossible */
diff = dc - s->last_dc[component];
encode_dc(s, diff, component);
s->last_dc[component] = dc;
i = 1;
if (s->intra_vlc_format)
table_vlc = ff_rl_mpeg2.table_vlc;
} else {
/* encode the first coefficient : needs to be done here because
it is handled slightly differently */
level = block[0];
if (abs(level) == 1) {
code = ((uint32_t)level >> 31); /* the sign bit */
put_bits(&s->pb, 2, code | 0x02);
i = 1;
} else {
i = 0;
last_non_zero = -1;
goto next_coef;
}
}
/* now quantify & encode AC coefs */
last_non_zero = i - 1;
for(;i<=last_index;i++) {
j = s->intra_scantable.permutated[i];
level = block[j];
next_coef:
/* encode using VLC */
if (level != 0) {
run = i - last_non_zero - 1;
alevel= level;
MASK_ABS(sign, alevel)
sign&=1;
if (alevel <= mpeg1_max_level[0][run]){
code= mpeg1_index_run[0][run] + alevel - 1;
/* store the vlc & sign at once */
put_bits(&s->pb, table_vlc[code][1]+1, (table_vlc[code][0]<<1) + sign);
} else {
/* escape seems to be pretty rare <5% so I do not optimize it */
put_bits(&s->pb, table_vlc[111][1], table_vlc[111][0]);
/* escape: only clip in this case */
put_bits(&s->pb, 6, run);
if(s->codec_id == CODEC_ID_MPEG1VIDEO){
if (alevel < 128) {
put_sbits(&s->pb, 8, level);
} else {
if (level < 0) {
put_bits(&s->pb, 16, 0x8001 + level + 255);
} else {
put_sbits(&s->pb, 16, level);
}
}
}else{
put_sbits(&s->pb, 12, level);
}
}
last_non_zero = i;
}
}
/* end of block */
put_bits(&s->pb, table_vlc[112][1], table_vlc[112][0]);
}
#define OFFSET(x) offsetof(MpegEncContext, x)
#define VE AV_OPT_FLAG_ENCODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM
#define COMMON_OPTS\
{AV_TIMECODE_OPTION(MpegEncContext, tc_opt_str, \
AV_OPT_FLAG_ENCODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)},\
{ "intra_vlc", "Use MPEG-2 intra VLC table.", OFFSET(intra_vlc_format), AV_OPT_TYPE_INT, { 0 }, 0, 1, VE },\
{ "drop_frame_timecode", "Timecode is in drop frame format.", OFFSET(drop_frame_timecode), AV_OPT_TYPE_INT, { 0 }, 0, 1, VE}, \
{ "scan_offset", "Reserve space for SVCD scan offset user data.", OFFSET(scan_offset), AV_OPT_TYPE_INT, { 0 }, 0, 1, VE },
static const AVOption mpeg1_options[] = {
COMMON_OPTS
FF_MPV_COMMON_OPTS
{ NULL },
};
static const AVOption mpeg2_options[] = {
COMMON_OPTS
{ "non_linear_quant", "Use nonlinear quantizer.", OFFSET(q_scale_type), AV_OPT_TYPE_INT, { 0 }, 0, 1, VE },
{ "alternate_scan", "Enable alternate scantable.", OFFSET(alternate_scan), AV_OPT_TYPE_INT, { 0 }, 0, 1, VE },
FF_MPV_COMMON_OPTS
{ NULL },
};
#define mpeg12_class(x)\
static const AVClass mpeg## x ##_class = {\
.class_name = "mpeg" #x "video encoder",\
.item_name = av_default_item_name,\
.option = mpeg## x ##_options,\
.version = LIBAVUTIL_VERSION_INT,\
};
mpeg12_class(1)
mpeg12_class(2)
AVCodec ff_mpeg1video_encoder = {
.name = "mpeg1video",
.type = AVMEDIA_TYPE_VIDEO,
.id = CODEC_ID_MPEG1VIDEO,
.priv_data_size = sizeof(MpegEncContext),
.init = encode_init,
.encode2 = ff_MPV_encode_picture,
.close = ff_MPV_encode_end,
.supported_framerates = avpriv_frame_rate_tab+1,
.pix_fmts = (const enum PixelFormat[]){ PIX_FMT_YUV420P,
PIX_FMT_NONE },
.capabilities = CODEC_CAP_DELAY,
.long_name = NULL_IF_CONFIG_SMALL("MPEG-1 video"),
.priv_class = &mpeg1_class,
};
AVCodec ff_mpeg2video_encoder = {
.name = "mpeg2video",
.type = AVMEDIA_TYPE_VIDEO,
.id = CODEC_ID_MPEG2VIDEO,
.priv_data_size = sizeof(MpegEncContext),
.init = encode_init,
.encode2 = ff_MPV_encode_picture,
.close = ff_MPV_encode_end,
.supported_framerates = avpriv_frame_rate_tab + 1,
.pix_fmts = (const enum PixelFormat[]){
PIX_FMT_YUV420P, PIX_FMT_YUV422P, PIX_FMT_NONE
},
.capabilities = CODEC_CAP_DELAY | CODEC_CAP_SLICE_THREADS,
.long_name = NULL_IF_CONFIG_SMALL("MPEG-2 video"),
.priv_class = &mpeg2_class,
};