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check validity of some flags

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Originally committed as revision 1773 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2003-04-14 14:06:21 +00:00
parent af6e2fed04
commit 9acbbd16b9
1 changed files with 25 additions and 0 deletions
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25
libavcodec/mpegvideo.c
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@ -586,6 +586,31 @@ int MPV_encode_init(AVCodecContext *avctx)
s->progressive_sequence= !(avctx->flags & CODEC_FLAG_INTERLACED_DCT);
if((s->flags & CODEC_FLAG_4MV) && s->codec_id != CODEC_ID_MPEG4){
fprintf(stderr, "4MV not supporetd by codec\n");
return -1;
}
if(s->quarter_sample && s->codec_id != CODEC_ID_MPEG4){
fprintf(stderr, "qpel not supporetd by codec\n");
return -1;
}
if(s->data_partitioning && s->codec_id != CODEC_ID_MPEG4){
fprintf(stderr, "data partitioning not supporetd by codec\n");
return -1;
}
if(s->max_b_frames && (s->codec_id != CODEC_ID_MPEG4 || s->codec_id != CODEC_ID_MPEG1VIDEO)){
fprintf(stderr, "b frames not supporetd by codec\n");
return -1;
}
if(s->mpeg_quant && s->codec_id != CODEC_ID_MPEG4){ //FIXME mpeg2 uses that too
fprintf(stderr, "mpeg2 style quantization not supporetd by codec\n");
return -1;
}
if(s->codec_id==CODEC_ID_MJPEG){
s->intra_quant_bias= 1<<(QUANT_BIAS_SHIFT-1); //(a + x/2)/x
s->inter_quant_bias= 0;