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AMV video encoder.

Browse Source 
Authors are Vladimir Voroshilov and Dobrica Pavlinušić based on svn blame/log
For full details of authorship see http://code.google.com/p/amv-codec-tools/

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer
2011-09-25 02:54:20 +02:00
parent ccecab4a0d
commit f2f28861da
4 changed files with 48 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
libavcodec/mpegvideo_enc.c
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@@ -265,6 +265,7 @@ av_cold int MPV_encode_init(AVCodecContext *avctx)
}
break;
case CODEC_ID_MJPEG:
case CODEC_ID_AMV:
if(avctx->pix_fmt != PIX_FMT_YUVJ420P && avctx->pix_fmt != PIX_FMT_YUVJ422P &&
((avctx->pix_fmt != PIX_FMT_YUV420P && avctx->pix_fmt != PIX_FMT_YUV422P) || avctx->strict_std_compliance>FF_COMPLIANCE_UNOFFICIAL)){
av_log(avctx, AV_LOG_ERROR, "colorspace not supported in jpeg\n");
@@ -530,6 +531,11 @@ av_cold int MPV_encode_init(AVCodecContext *avctx)
if(s->mpeg_quant || s->codec_id==CODEC_ID_MPEG1VIDEO || s->codec_id==CODEC_ID_MPEG2VIDEO || s->codec_id==CODEC_ID_MJPEG){
s->intra_quant_bias= 3<<(QUANT_BIAS_SHIFT-3); //(a + x*3/8)/x
s->inter_quant_bias= 0;
}else if(s->codec_id==CODEC_ID_AMV){
s->intra_quant_bias= 0;
s->inter_quant_bias= 0;
s->fixed_qscale = 1;
s->adaptive_quant = 0;
}else{
s->intra_quant_bias=0;
s->inter_quant_bias=-(1<<(QUANT_BIAS_SHIFT-2)); //(a - x/4)/x
@@ -540,6 +546,8 @@ av_cold int MPV_encode_init(AVCodecContext *avctx)
if(avctx->inter_quant_bias != FF_DEFAULT_QUANT_BIAS)
s->inter_quant_bias= avctx->inter_quant_bias;
av_log(avctx, AV_LOG_DEBUG, "intra_quant_bias = %d inter_quant_bias = %d\n",s->intra_quant_bias,s->inter_quant_bias);
avcodec_get_chroma_sub_sample(avctx->pix_fmt, &chroma_h_shift, &chroma_v_shift);
if(avctx->codec_id == CODEC_ID_MPEG4 && s->avctx->time_base.den > (1<<16)-1){
@@ -564,6 +572,7 @@ av_cold int MPV_encode_init(AVCodecContext *avctx)
break;
case CODEC_ID_LJPEG:
case CODEC_ID_MJPEG:
case CODEC_ID_AMV:
s->out_format = FMT_MJPEG;
s->intra_only = 1; /* force intra only for jpeg */
if(avctx->codec->id == CODEC_ID_LJPEG && avctx->pix_fmt == PIX_FMT_BGRA){
@@ -1788,6 +1797,7 @@ static av_always_inline void encode_mb_internal(MpegEncContext *s, int motion_x,
h263_encode_mb(s, s->block, motion_x, motion_y);
break;
case CODEC_ID_MJPEG:
case CODEC_ID_AMV:
if (CONFIG_MJPEG_ENCODER)
ff_mjpeg_encode_mb(s, s->block);
break;