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check mb/me_threshold range, fixes assertion failure

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Originally committed as revision 4082 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2005-03-26 18:10:44 +00:00
parent 71434945f2
commit cec1f05fd7
2 changed files with 13 additions and 3 deletions
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6
libavcodec/motion_est.c
View File

@ -1016,7 +1016,7 @@ static inline int check_input_motion(MpegEncContext * s, int mb_x, int mb_y, int
if(p_type && USES_LIST(mb_type, 1)){
av_log(c->avctx, AV_LOG_ERROR, "backward motion vector in P frame\n");
return INT_MAX/4;
return INT_MAX/2;
}
assert(IS_INTRA(mb_type) || USES_LIST(mb_type,0) || USES_LIST(mb_type,1));
@ -1034,7 +1034,7 @@ static inline int check_input_motion(MpegEncContext * s, int mb_x, int mb_y, int
if(!(s->flags & CODEC_FLAG_INTERLACED_ME)){
av_log(c->avctx, AV_LOG_ERROR, "Interlaced macroblock selected but interlaced motion estimation disabled\n");
return INT_MAX/4;
return INT_MAX/2;
}
if(USES_LIST(mb_type, 0)){
@ -1095,7 +1095,7 @@ static inline int check_input_motion(MpegEncContext * s, int mb_x, int mb_y, int
}else if(IS_8X8(mb_type)){
if(!(s->flags & CODEC_FLAG_4MV)){
av_log(c->avctx, AV_LOG_ERROR, "4MV macroblock selected but 4MV encoding disabled\n");
return INT_MAX/4;
return INT_MAX/2;
}
cmpf= s->dsp.sse[1];
chroma_cmpf= s->dsp.sse[1];

10
libavcodec/mpegvideo.c
View File

@ -1054,6 +1054,16 @@ int MPV_encode_init(AVCodecContext *avctx)
av_log(avctx, AV_LOG_ERROR, "framerate not set\n");
return -1;
}
i= (INT_MAX/2+128)>>8;
if(avctx->me_threshold >= i){
av_log(avctx, AV_LOG_ERROR, "me_threshold too large, max is %d\n", i - 1);
return -1;
}
if(avctx->mb_threshold >= i){
av_log(avctx, AV_LOG_ERROR, "mb_threshold too large, max is %d\n", i - 1);
return -1;
}
i= ff_gcd(avctx->frame_rate, avctx->frame_rate_base);
if(i > 1){