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authorMark Nauwelaerts <mark.nauwelaerts@collabora.co.uk>2012-02-21 18:53:57 +0100
committerMark Nauwelaerts <mark.nauwelaerts@collabora.co.uk>2012-02-21 18:54:52 +0100
commit838493c9a7cc199805563299fc3152a0bdf3a77e (patch)
treec3a3abfda9c90ea7f56841b2c1bca3ce86c0778e
parent5dead1c4007af753bb2895e9c44b2582b0b3ec3a (diff)
mad: handle libmad freeform parsing quirk
-rw-r--r--ext/mad/gstmad.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/ext/mad/gstmad.c b/ext/mad/gstmad.c
index cd3d068e..a24c89dd 100644
--- a/ext/mad/gstmad.c
+++ b/ext/mad/gstmad.c
@@ -339,6 +339,22 @@ gst_mad_parse (GstAudioDecoder * dec, GstAdapter * adapter,
GST_LOG_OBJECT (mad, "decoding the header now");
if (mad_header_decode (&mad->frame.header, &mad->stream) == -1) {
+ /* HACK it seems mad reports wrong error when it is trying to determine
+ * free bitrate and scanning for next header */
+ if (mad->stream.error == MAD_ERROR_LOSTSYNC) {
+ const guint8 *ptr = mad->stream.this_frame;
+ guint32 header;
+
+ if (ptr >= data && ptr < data + av) {
+ header = GST_READ_UINT32_BE (ptr);
+ /* looks like possible freeform header with not much data */
+ if (((header & 0xFFE00000) == 0xFFE00000) &&
+ (((header >> 12) & 0xF) == 0x0) && (av < 4096)) {
+ GST_DEBUG_OBJECT (mad, "overriding freeform LOST_SYNC to BUFLEN");
+ mad->stream.error = MAD_ERROR_BUFLEN;
+ }
+ }
+ }
if (mad->stream.error == MAD_ERROR_BUFLEN) {
GST_LOG_OBJECT (mad,
"not enough data in tempbuffer (%d), breaking to get more", size);