X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fwavpack.c;h=d0242809fe02c21ed8ba078314c9ea6704d7d984;hb=6cc8cfe30c09b1776b935988fcdedf0333602f8e;hp=8306ec020f5455ae6cdaacc0b2dea04cd787076f;hpb=26148e923613e718787c6fc4bf3f64e8909f597c;p=ffmpeg

diff --git a/libavcodec/wavpack.c b/libavcodec/wavpack.c
index 8306ec020f5..d0242809fe0 100644
--- a/libavcodec/wavpack.c
+++ b/libavcodec/wavpack.c
@@ -940,13 +940,23 @@ static int wavpack_decode_block(AVCodecContext *avctx, int block_no,
             case 3:
                 chmask = bytestream2_get_le32(&gb);
                 break;
-            case 5:
+            case 4:
                 size = bytestream2_get_byte(&gb);
-                if (avctx->channels != size)
+                chan  |= (bytestream2_get_byte(&gb) & 0xF) << 8;
+                chan  += 1;
+                if (avctx->channels != chan)
                     av_log(avctx, AV_LOG_WARNING, "%i channels signalled"
-                           " instead of %i.\n", size, avctx->channels);
+                           " instead of %i.\n", chan, avctx->channels);
+                chmask = bytestream2_get_le24(&gb);
+                break;
+            case 5:
+                size = bytestream2_get_byte(&gb);
                 chan  |= (bytestream2_get_byte(&gb) & 0xF) << 8;
-                chmask = bytestream2_get_le16(&gb);
+                chan  += 1;
+                if (avctx->channels != chan)
+                    av_log(avctx, AV_LOG_WARNING, "%i channels signalled"
+                           " instead of %i.\n", chan, avctx->channels);
+                chmask = bytestream2_get_le32(&gb);
                 break;
             default:
                 av_log(avctx, AV_LOG_ERROR, "Invalid channel info size %d\n",