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port #121143 to HEAD (flac file detection)

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Original commit message from CVS:
port #121143 to HEAD (flac file detection)
This commit is contained in:
Jeremy Simon 2003-09-20 19:34:31 +00:00
parent ffb4b651be
commit 6ecea15a25
1 changed files with 23 additions and 3 deletions
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26
ext/flac/gstflac.c
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@ -68,19 +68,39 @@ static GstTypeDefinition flacdefinition = {
flac_type_find, flac_type_find,
}; };
static GstCaps* static GstCaps*
flac_type_find (GstBuffer *buf, gpointer private) flac_type_find (GstBuffer *buf, gpointer private)
{ {
gint offset;
guint8 *data;
gint size;
guint32 head; guint32 head;
if (GST_BUFFER_SIZE (buf) < 4) if (GST_BUFFER_SIZE (buf) < 4)
return NULL; return NULL;
data = GST_BUFFER_DATA (buf);
size = GST_BUFFER_SIZE (buf);
head = GUINT32_FROM_BE (*((guint32 *)GST_BUFFER_DATA (buf))); head = GUINT32_FROM_BE (*((guint32 *)GST_BUFFER_DATA (buf)));
if (head != 0x664C6143)
return NULL;
return gst_caps_new ("flac_type_find", "audio/x-flac", NULL); if (head == 0x664C6143)
return gst_caps_new ("flac_type_find", "application/x-flac", NULL);
else {
/* checks for existance of flac identification header in case
* there's an ID3 tag */
for (offset = 0; offset < size-4; offset++) {
if (data[offset] == 'f' &&
data[offset+1] == 'L' &&
data[offset+2] == 'a' &&
data[offset+3] == 'C' ) {
return gst_caps_new ("flac_type_find", "application/x-flac", NULL);
}
}
}
return NULL;
} }