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ffmpeg/libavcodec/wmv2enc.c
Michael Niedermayer 7a72695c05 Merge commit '36ef5369ee9b336febc2c270f8718cec4476cb85'
* commit '36ef5369ee9b336febc2c270f8718cec4476cb85':
  Replace all CODEC_ID_* with AV_CODEC_ID_*
  lavc: add AV prefix to codec ids.

Conflicts:
	doc/APIchanges
	doc/examples/decoding_encoding.c
	doc/examples/muxing.c
	ffmpeg.c
	ffprobe.c
	ffserver.c
	libavcodec/8svx.c
	libavcodec/avcodec.h
	libavcodec/dnxhd_parser.c
	libavcodec/dvdsubdec.c
	libavcodec/error_resilience.c
	libavcodec/h263dec.c
	libavcodec/libvorbisenc.c
	libavcodec/mjpeg_parser.c
	libavcodec/mjpegenc.c
	libavcodec/mpeg12.c
	libavcodec/mpeg4videodec.c
	libavcodec/mpegvideo.c
	libavcodec/mpegvideo_enc.c
	libavcodec/pcm.c
	libavcodec/r210dec.c
	libavcodec/utils.c
	libavcodec/v210dec.c
	libavcodec/version.h
	libavdevice/alsa-audio-dec.c
	libavdevice/bktr.c
	libavdevice/v4l2.c
	libavformat/asfdec.c
	libavformat/asfenc.c
	libavformat/avformat.h
	libavformat/avidec.c
	libavformat/caf.c
	libavformat/electronicarts.c
	libavformat/flacdec.c
	libavformat/flvdec.c
	libavformat/flvenc.c
	libavformat/framecrcenc.c
	libavformat/img2.c
	libavformat/img2dec.c
	libavformat/img2enc.c
	libavformat/ipmovie.c
	libavformat/isom.c
	libavformat/matroska.c
	libavformat/matroskadec.c
	libavformat/matroskaenc.c
	libavformat/mov.c
	libavformat/movenc.c
	libavformat/mp3dec.c
	libavformat/mpeg.c
	libavformat/mpegts.c
	libavformat/mxf.c
	libavformat/mxfdec.c
	libavformat/mxfenc.c
	libavformat/nsvdec.c
	libavformat/nut.c
	libavformat/oggenc.c
	libavformat/pmpdec.c
	libavformat/rawdec.c
	libavformat/rawenc.c
	libavformat/riff.c
	libavformat/sdp.c
	libavformat/utils.c
	libavformat/vocenc.c
	libavformat/wtv.c
	libavformat/xmv.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2012-08-07 22:45:46 +02:00

225 lines
6.7 KiB
C

/*
* Copyright (c) 2002 The FFmpeg Project
*
* 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 "avcodec.h"
#include "dsputil.h"
#include "mpegvideo.h"
#include "msmpeg4.h"
#include "msmpeg4data.h"
#include "h263.h"
#include "wmv2.h"
static int encode_ext_header(Wmv2Context *w){
MpegEncContext * const s= &w->s;
PutBitContext pb;
int code;
init_put_bits(&pb, s->avctx->extradata, s->avctx->extradata_size);
put_bits(&pb, 5, s->avctx->time_base.den / s->avctx->time_base.num); //yes 29.97 -> 29
put_bits(&pb, 11, FFMIN(s->bit_rate/1024, 2047));
put_bits(&pb, 1, w->mspel_bit=1);
put_bits(&pb, 1, s->loop_filter);
put_bits(&pb, 1, w->abt_flag=1);
put_bits(&pb, 1, w->j_type_bit=1);
put_bits(&pb, 1, w->top_left_mv_flag=0);
put_bits(&pb, 1, w->per_mb_rl_bit=1);
put_bits(&pb, 3, code=1);
flush_put_bits(&pb);
s->slice_height = s->mb_height / code;
return 0;
}
static av_cold int wmv2_encode_init(AVCodecContext *avctx){
Wmv2Context * const w= avctx->priv_data;
if(ff_MPV_encode_init(avctx) < 0)
return -1;
ff_wmv2_common_init(w);
avctx->extradata_size= 4;
avctx->extradata= av_mallocz(avctx->extradata_size + 10);
encode_ext_header(w);
return 0;
}
int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number)
{
Wmv2Context * const w= (Wmv2Context*)s;
put_bits(&s->pb, 1, s->pict_type - 1);
if(s->pict_type == AV_PICTURE_TYPE_I){
put_bits(&s->pb, 7, 0);
}
put_bits(&s->pb, 5, s->qscale);
s->dc_table_index = 1;
s->mv_table_index = 1; /* only if P frame */
s->per_mb_rl_table = 0;
s->mspel= 0;
w->per_mb_abt=0;
w->abt_type=0;
w->j_type=0;
av_assert0(s->flipflop_rounding);
if (s->pict_type == AV_PICTURE_TYPE_I) {
av_assert0(s->no_rounding==1);
if(w->j_type_bit) put_bits(&s->pb, 1, w->j_type);
if(w->per_mb_rl_bit) put_bits(&s->pb, 1, s->per_mb_rl_table);
if(!s->per_mb_rl_table){
ff_msmpeg4_code012(&s->pb, s->rl_chroma_table_index);
ff_msmpeg4_code012(&s->pb, s->rl_table_index);
}
put_bits(&s->pb, 1, s->dc_table_index);
s->inter_intra_pred= 0;
}else{
int cbp_index;
put_bits(&s->pb, 2, SKIP_TYPE_NONE);
ff_msmpeg4_code012(&s->pb, cbp_index=0);
if(s->qscale <= 10){
int map[3]= {0,2,1};
w->cbp_table_index= map[cbp_index];
}else if(s->qscale <= 20){
int map[3]= {1,0,2};
w->cbp_table_index= map[cbp_index];
}else{
int map[3]= {2,1,0};
w->cbp_table_index= map[cbp_index];
}
if(w->mspel_bit) put_bits(&s->pb, 1, s->mspel);
if(w->abt_flag){
put_bits(&s->pb, 1, w->per_mb_abt^1);
if(!w->per_mb_abt){
ff_msmpeg4_code012(&s->pb, w->abt_type);
}
}
if(w->per_mb_rl_bit) put_bits(&s->pb, 1, s->per_mb_rl_table);
if(!s->per_mb_rl_table){
ff_msmpeg4_code012(&s->pb, s->rl_table_index);
s->rl_chroma_table_index = s->rl_table_index;
}
put_bits(&s->pb, 1, s->dc_table_index);
put_bits(&s->pb, 1, s->mv_table_index);
s->inter_intra_pred= 0;//(s->width*s->height < 320*240 && s->bit_rate<=II_BITRATE);
}
s->esc3_level_length= 0;
s->esc3_run_length= 0;
return 0;
}
/* Nearly identical to wmv1 but that is just because we do not use the
* useless M$ crap features. It is duplicated here in case someone wants
* to add support for these crap features. */
void ff_wmv2_encode_mb(MpegEncContext * s,
DCTELEM block[6][64],
int motion_x, int motion_y)
{
Wmv2Context * const w= (Wmv2Context*)s;
int cbp, coded_cbp, i;
int pred_x, pred_y;
uint8_t *coded_block;
ff_msmpeg4_handle_slices(s);
if (!s->mb_intra) {
/* compute cbp */
cbp = 0;
for (i = 0; i < 6; i++) {
if (s->block_last_index[i] >= 0)
cbp |= 1 << (5 - i);
}
put_bits(&s->pb,
ff_wmv2_inter_table[w->cbp_table_index][cbp + 64][1],
ff_wmv2_inter_table[w->cbp_table_index][cbp + 64][0]);
/* motion vector */
ff_h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
ff_msmpeg4_encode_motion(s, motion_x - pred_x,
motion_y - pred_y);
} else {
/* compute cbp */
cbp = 0;
coded_cbp = 0;
for (i = 0; i < 6; i++) {
int val, pred;
val = (s->block_last_index[i] >= 1);
cbp |= val << (5 - i);
if (i < 4) {
/* predict value for close blocks only for luma */
pred = ff_msmpeg4_coded_block_pred(s, i, &coded_block);
*coded_block = val;
val = val ^ pred;
}
coded_cbp |= val << (5 - i);
}
if (s->pict_type == AV_PICTURE_TYPE_I) {
put_bits(&s->pb,
ff_msmp4_mb_i_table[coded_cbp][1], ff_msmp4_mb_i_table[coded_cbp][0]);
} else {
put_bits(&s->pb,
ff_wmv2_inter_table[w->cbp_table_index][cbp][1],
ff_wmv2_inter_table[w->cbp_table_index][cbp][0]);
}
put_bits(&s->pb, 1, 0); /* no AC prediction yet */
if(s->inter_intra_pred){
s->h263_aic_dir=0;
put_bits(&s->pb, ff_table_inter_intra[s->h263_aic_dir][1], ff_table_inter_intra[s->h263_aic_dir][0]);
}
}
for (i = 0; i < 6; i++) {
ff_msmpeg4_encode_block(s, block[i], i);
}
}
AVCodec ff_wmv2_encoder = {
.name = "wmv2",
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_WMV2,
.priv_data_size = sizeof(Wmv2Context),
.init = wmv2_encode_init,
.encode2 = ff_MPV_encode_picture,
.close = ff_MPV_encode_end,
.pix_fmts = (const enum PixelFormat[]){ PIX_FMT_YUV420P, PIX_FMT_NONE },
.long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 8"),
};