gst-libs/gst/riff/: Fix for unaligned RIFF files (i.e. where all the chunks together in a LIST chunk are not of the s...

Original commit message from CVS:
* gst-libs/gst/riff/riff-media.c:
(gst_riff_create_video_caps_with_data),
(gst_riff_create_audio_caps),
(gst_riff_create_audio_template_caps):
* gst-libs/gst/riff/riff-read.c: (gst_riff_peek_head):
Fix for unaligned RIFF files (i.e. where all the chunks together
in a LIST chunk are not of the same size as the size given in
the LIST chunk header). Fixes several odd WAVE files. Also fix
ADPCM (block_align property) in audio, so that wavparse based
on this works now as it used to stand-alone.

1 files changed, 16 insertions, 0 deletions

diff --git a/gst-libs/gst/riff/riff-read.c b/gst-libs/gst/riff/riff-read.c
index 388ea753..fc47f2c8 100644
--- a/gst-libs/gst/riff/riff-read.c
+++ b/gst-libs/gst/riff/riff-read.c
@@ -154,8 +154,24 @@ gboolean
 gst_riff_peek_head (GstRiffRead * riff,
     guint32 * tag, guint32 * length, guint * level_up)
 {
+  GList *last;
   guint8 *data;
 
+  /* if we're at the end of a chunk, but unaligned, then re-align.
+   * Those are essentially broken files, but unfortunately they
+   * exist. */
+  if ((last = g_list_last (riff->level)) != NULL) {
+    GstRiffLevel *level = last->data;
+    guint64 pos = gst_bytestream_tell (riff->bs);
+
+    if (level->start + level->length - pos < 8) {
+      if (!gst_bytestream_flush (riff->bs, level->start + level->length - pos)) {
+        GST_ELEMENT_ERROR (riff, RESOURCE, READ, (NULL), (NULL));
+        return FALSE;
+      }
+    }
+  }
+
   /* read */
   while (gst_bytestream_peek_bytes (riff->bs, &data, 8) != 8) {
     GstEvent *event = NULL;