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typefind: Add typefinder for video/x-pva

Browse source 
https://bugzilla.gnome.org/show_bug.cgi?id=158719
This commit is contained in:
Sebastian Dröge 2013-08-22 14:18:29 +02:00
parent 716f992c17
commit ec9b17479d
1 changed files with 28 additions and 3 deletions
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31
gst/typefind/gsttypefindfunctions.c
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@ -1099,19 +1099,21 @@ aac_type_find (GstTypeFind * tf, gpointer unused)
len = ((c.data[offset + 3] & 0x03) << 11) |
(c.data[offset + 4] << 3) | ((c.data[offset + 5] & 0xe0) >> 5);
if (len == 0 || !data_scan_ctx_ensure_data (tf, &c, len + 2)) {
GST_DEBUG ("Wrong sync or next frame not within reach, len=%u", len);
GST_DEBUG ("Wrong sync or next frame not within reach, len=%u",
len);
break;
}
snc = GST_READ_UINT16_BE (c.data + offset);
if ((snc & 0xfff6) == 0xfff0) {
GST_DEBUG ("Find %und Sync..probability is %u ", i, GST_TYPE_FIND_LIKELY + 5 * (i - 2));
GST_DEBUG ("Find %und Sync..probability is %u ", i,
GST_TYPE_FIND_LIKELY + 5 * (i - 2));
offset += len;
} else {
break;
}
}
gst_type_find_suggest (tf, GST_TYPE_FIND_LIKELY + 5 * (i - 3), caps);
}
gst_caps_unref (caps);
break;
@ -5177,6 +5179,26 @@ ssa_type_find (GstTypeFind * tf, gpointer private)
g_free (str);
}
/*** video/x-pva ***/
static GstStaticCaps pva_caps = GST_STATIC_CAPS ("video/x-pva");
#define PVA_CAPS gst_static_caps_get(&pva_caps)
static void
pva_type_find (GstTypeFind * tf, gpointer private)
{
const guint8 *data;
data = gst_type_find_peek (tf, 0, 5);
if (data == NULL)
return;
if (data[0] == 'A' && data[1] == 'V' && data[2] < 3 && data[4] == 0x55)
gst_type_find_suggest (tf, GST_TYPE_FIND_NEARLY_CERTAIN, PVA_CAPS);
}
/*** generic typefind for streams that have some data at a specific position***/
typedef struct
{
@ -5561,6 +5583,9 @@ plugin_init (GstPlugin * plugin)
TYPE_FIND_REGISTER (plugin, "application/x-ssa", GST_RANK_SECONDARY,
ssa_type_find, "ssa,ass", NULL, NULL, NULL);
TYPE_FIND_REGISTER (plugin, "video/x-pva", GST_RANK_SECONDARY,
pva_type_find, "pva", PVA_CAPS, NULL, NULL);
return TRUE;
}