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Check rc_buffer_size value using integer arithmetic

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Using floating-point here can cause erroneous rejection of
parameters due to rounding errors leading to a slightly too
large result.

This fixes the mxf regression test with gcc 4.5 on x86_32.

Originally committed as revision 25060 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Måns Rullgård 2010-09-07 19:54:48 +00:00
parent 1904035bac
commit b33451eeac
1 changed files with 1 additions and 1 deletions
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2
libavcodec/mpegvideo_enc.c
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@ -351,7 +351,7 @@ av_cold int MPV_encode_init(AVCodecContext *avctx)
av_log(avctx, AV_LOG_INFO, "impossible bitrate constraints, this will fail\n");
}
if(avctx->rc_buffer_size && avctx->bit_rate*av_q2d(avctx->time_base) > avctx->rc_buffer_size){
if(avctx->rc_buffer_size && avctx->bit_rate*(int64_t)avctx->time_base.num > avctx->rc_buffer_size * (int64_t)avctx->time_base.den){
av_log(avctx, AV_LOG_ERROR, "VBV buffer too small for bitrate\n");
return -1;
}