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-rw-r--r--libmpdemux/demux_gif.c18
1 files changed, 11 insertions, 7 deletions
diff --git a/libmpdemux/demux_gif.c b/libmpdemux/demux_gif.c
index 4daaf5efd5..bdd8860abf 100644
--- a/libmpdemux/demux_gif.c
+++ b/libmpdemux/demux_gif.c
@@ -176,19 +176,23 @@ static int demux_gif_fill_buffer(demuxer_t *demuxer, demux_stream_t *ds)
if (gif->Image.Interlace) {
uint8_t *s = buf;
- memcpy_transp_pic(dest, s, w, h >> 3,
+ int ih = (h - 0 + 7) >> 3;
+ memcpy_transp_pic(dest, s, w, ih,
priv->w << 3, gif->Image.Width,
transparency, transparent_col);
- s += (h >> 3) * w;
- memcpy_transp_pic(dest + (priv->w << 2), s, w, h >> 3,
+ s += ih * w;
+ ih = (h - 4 + 7) >> 3;
+ memcpy_transp_pic(dest + (priv->w << 2), s, w, ih,
priv->w << 3, gif->Image.Width,
transparency, transparent_col);
- s += (h >> 3) * w;
- memcpy_transp_pic(dest + (priv->w << 1), s, w, h >> 2,
+ s += ih * w;
+ ih = (h - 2 + 3) >> 2;
+ memcpy_transp_pic(dest + (priv->w << 1), s, w, ih,
priv->w << 2, gif->Image.Width,
transparency, transparent_col);
- s += (h >> 2) * w;
- memcpy_transp_pic(dest + priv->w, s, w, h >> 1,
+ s += ih * w;
+ ih = (h - 1 + 1) >> 1;
+ memcpy_transp_pic(dest + priv->w, s, w, ih,
priv->w << 1, gif->Image.Width,
transparency, transparent_col);
} else