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aic: Fix decoding files with odd dimensions 

Normally the aic decoder finds the proper slice combination (multiple of
some number less than 32) but in case of odd width, it resorts to the
default values, which were actually swapped.
The number of slices is modified to account for such odd width cases.

CC: libav-stable@libav.org
This commit is contained in:
Vittorio Giovara 2015-02-27 19:00:25 +00:00
parent 33d412eb4a
commit e878ec0d47
1 changed files with 2 additions and 2 deletions
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4
libavcodec/aic.c
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@ -434,8 +434,8 @@ static av_cold int aic_decode_init(AVCodecContext *avctx)
ctx->mb_width = FFALIGN(avctx->width, 16) >> 4;
ctx->mb_height = FFALIGN(avctx->height, 16) >> 4;
ctx->num_x_slices = 16;
ctx->slice_width = ctx->mb_width / 16;
ctx->num_x_slices = (ctx->mb_width + 15) >> 4;
ctx->slice_width = 16;
for (i = 1; i < 32; i++) {
if (!(ctx->mb_width % i) && (ctx->mb_width / i < 32)) {
ctx->slice_width = ctx->mb_width / i;