Perform inter-channel decorr. only if both channels are coded

13 years ago · a520a9946f
parent 7f215e3e72
commit a520a9946f
1 changed files with 1 additions and 1 deletions
--- a/libavcodec/wmalosslessdec.c
+++ b/libavcodec/wmalosslessdec.c
@ -1025,7 +1025,7 @@ static void revert_inter_ch_decorr(WmallDecodeCtx *s, int tile_size)
    int icoef;
    if (s->num_channels != 2)
        return;
-    else {
+    else if (s->is_channel_coded[0] && s->is_channel_coded[1]) {
        for (icoef = 0; icoef < tile_size; icoef++) {
            s->channel_residues[0][icoef] -= s->channel_residues[1][icoef] >> 1;
            s->channel_residues[1][icoef] += s->channel_residues[0][icoef];