generic-library/ffmpeg
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error_concealment: Prevent FPEs in case of corrupted input.

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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Michael Niedermayer 2012-03-23 21:56:42 +01:00
parent e2d110d8d2
commit 71c2a70cbf
1 changed files with 1 additions and 1 deletions
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libavcodec/error_resilience.c
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@ -248,7 +248,7 @@ static void guess_dc(MpegEncContext *s, int16_t *dc, int w,
weight_sum = 0; weight_sum = 0;
guess = 0; guess = 0;
for (j = 0; j < 4; j++) { for (j = 0; j < 4; j++) {
int64_t weight = 256 * 256 * 256 * 16 / dist[b_x + b_y*stride][j]; int64_t weight = 256 * 256 * 256 * 16 / FFMAX(dist[b_x + b_y*stride][j], 1);
guess += weight*(int64_t)col[b_x + b_y*stride][j]; guess += weight*(int64_t)col[b_x + b_y*stride][j];
weight_sum += weight; weight_sum += weight;
} }