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motionpixels: Fix the size of workspace buffers 

Some buffers must be mod 4 in width and/or height.

Signed-off-by: Janne Grunau <janne-libav@jannau.net>
This commit is contained in:
Laurent Aimar 2011-09-29 23:13:35 +00:00 committed by Janne Grunau
parent d337dd3a90
commit 210c80331e
1 changed files with 4 additions and 2 deletions
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6
libavcodec/motionpixels.c
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@ -52,14 +52,16 @@ typedef struct MotionPixelsContext {
static av_cold int mp_decode_init(AVCodecContext *avctx)
{
MotionPixelsContext *mp = avctx->priv_data;
int w4 = (avctx->width + 3) & ~3;
int h4 = (avctx->height + 3) & ~3;
motionpixels_tableinit();
mp->avctx = avctx;
dsputil_init(&mp->dsp, avctx);
mp->changes_map = av_mallocz(avctx->width * avctx->height);
mp->changes_map = av_mallocz(avctx->width * h4);
mp->offset_bits_len = av_log2(avctx->width * avctx->height) + 1;
mp->vpt = av_mallocz(avctx->height * sizeof(YuvPixel));
mp->hpt = av_mallocz(avctx->height * avctx->width / 16 * sizeof(YuvPixel));
mp->hpt = av_mallocz(h4 * w4 / 16 * sizeof(YuvPixel));
avctx->pix_fmt = PIX_FMT_RGB555;
return 0;
}