diff options
| -rw-r--r-- | libavcodec/pngdec.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/libavcodec/pngdec.c b/libavcodec/pngdec.c index 593df60294..97c0ad19b6 100644 --- a/libavcodec/pngdec.c +++ b/libavcodec/pngdec.c @@ -765,10 +765,14 @@ static int decode_frame(AVCodecContext *avctx, exit_loop: if (s->bits_per_pixel == 1 && s->color_type == PNG_COLOR_TYPE_PALETTE){ - int i, j; + int i, j, k; uint8_t *pd = s->current_picture->data[0]; for (j = 0; j < s->height; j++) { - for (i = s->width/8-1; i >= 0; i--) { + i = s->width / 8; + for (k = 7; k >= 1; k--) + if ((s->width&7) >= k) + pd[8*i + k - 1] = (pd[i]>>8-k) & 1; + for (i--; i >= 0; i--) { pd[8*i + 7]= pd[i] & 1; pd[8*i + 6]= (pd[i]>>1) & 1; pd[8*i + 5]= (pd[i]>>2) & 1; |