X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavformat%2Fwavdec.c;h=f65a66a0066b424468945e0be88b55106c086c91;hb=8b2e9636c57b22582143467a8a06b509b47b92f9;hp=63f9c38e99c9b78e96dd3b75ddda47478a614557;hpb=69467fb64ba4972c7aa436ded2468bb32df9fa97;p=ffmpeg

diff --git a/libavformat/wavdec.c b/libavformat/wavdec.c
index 63f9c38e99c..f65a66a0066 100644
--- a/libavformat/wavdec.c
+++ b/libavformat/wavdec.c
@@ -23,6 +23,8 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#include <stdint.h>
+
 #include "libavutil/avassert.h"
 #include "libavutil/dict.h"
 #include "libavutil/log.h"
@@ -49,6 +51,12 @@ static int64_t next_tag(AVIOContext *pb, uint32_t *tag)
     return avio_rl32(pb);
 }
 
+/* RIFF chunks are always on a even offset. */
+static int64_t wav_seek_tag(AVIOContext *s, int64_t offset, int whence)
+{
+    return avio_seek(s, offset + (offset & 1), whence);
+}
+
 /* return the size of the found tag */
 static int64_t find_tag(AVIOContext *pb, uint32_t tag1)
 {
@@ -61,7 +69,7 @@ static int64_t find_tag(AVIOContext *pb, uint32_t tag1)
         size = next_tag(pb, &tag);
         if (tag == tag1)
             break;
-        avio_skip(pb, size);
+        wav_seek_tag(pb, size, SEEK_CUR);
     }
     return size;
 }
@@ -307,7 +315,7 @@ static int wav_read_header(AVFormatContext *s)
 
         /* seek to next tag unless we know that we'll run into EOF */
         if ((avio_size(pb) > 0 && next_tag_ofs >= avio_size(pb)) ||
-            avio_seek(pb, next_tag_ofs, SEEK_SET) < 0) {
+            wav_seek_tag(pb, next_tag_ofs, SEEK_SET) < 0) {
             break;
         }
     }