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gst/typefind/gsttypefindfunctions.c: Fix CMML type find function to not require a specific minor version of the CMML ...

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Original commit message from CVS:
* gst/typefind/gsttypefindfunctions.c: (mpeg4_video_type_find),
(cmml_type_find), (plugin_init):
Fix CMML type find function to not require a specific minor version
of the CMML header.

Add an MPEG4 video elementary stream typefind function.
This commit is contained in:
Michael Smith 2006-02-24 18:55:27 +00:00
parent a61010004b
commit 5b86bcab57
2 changed files with 39 additions and 5 deletions
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9
ChangeLog
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@ -1,3 +1,12 @@
2006-02-24 Michael Smith <msmith@fluendo.com>
* gst/typefind/gsttypefindfunctions.c: (mpeg4_video_type_find),
(cmml_type_find), (plugin_init):
Fix CMML type find function to not require a specific minor version
of the CMML header.
Add an MPEG4 video elementary stream typefind function.
2006-02-04 Michael Smith <msmith@fluendo.com>
* ext/ogg/gstoggdemux.c: (gst_ogg_pad_parse_skeleton_fishead),

35
gst/typefind/gsttypefindfunctions.c
View file

@ -982,6 +982,30 @@ mpeg1_sys_type_find (GstTypeFind * tf, gpointer unused)
}
}
/*** video/mpeg MPEG-4 elementary video stream ***/
static GstStaticCaps mpeg4_video_caps = GST_STATIC_CAPS ("video/mpeg, "
"systemstream = (boolean) false, mpegversion = 4");
#define MPEG4_VIDEO_CAPS gst_static_caps_get(&mpeg4_video_caps)
static void
mpeg4_video_type_find (GstTypeFind * tf, gpointer unused)
{
/* Header is a video object start code followed by a video object layer
* start code. The last byte of this 8-byte header can be from 0x20 - 0x2F */
static const guint8 header[] = { 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01 };
guint8 *data = NULL;
data = gst_type_find_peek (tf, 0, 8);
if (data && memcmp (data, header, 7) == 0 &&
data[7] >= 0x20 && data[7] <= 0x2F) {
GstCaps *caps = gst_caps_copy (MPEG4_VIDEO_CAPS);
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM - 1, caps);
gst_caps_unref (caps);
}
}
/*** video/mpeg video stream ***/
static GstStaticCaps mpeg_video_caps = GST_STATIC_CAPS ("video/mpeg, "
@ -1808,7 +1832,7 @@ speex_type_find (GstTypeFind * tf, gpointer private)
/*** application/x-ogg-skeleton ***/
static GstStaticCaps ogg_skeleton_caps =
GST_STATIC_CAPS ("application/x-ogg-skeleton");
GST_STATIC_CAPS ("application/x-ogg-skeleton, parsed=(boolean)FALSE");
#define OGG_SKELETON_CAPS (gst_static_caps_get(&ogg_skeleton_caps))
static void
oggskel_type_find (GstTypeFind * tf, gpointer private)
@ -1838,9 +1862,11 @@ static GstStaticCaps cmml_caps = GST_STATIC_CAPS ("text/x-cmml");
static void
cmml_type_find (GstTypeFind * tf, gpointer private)
{
/* Header is 12 bytes minimum (though we don't check the minor version */
guint8 *data = gst_type_find_peek (tf, 0, 12);
if (data) {
/* 8 byte string "CMML\0\0\0\0" for the magic number */
if (memcmp (data, "CMML\0\0\0\0", 8) != 0)
return;
@ -1849,10 +1875,6 @@ cmml_type_find (GstTypeFind * tf, gpointer private)
/* Require that the header contains at least version 2.0 */
if (GST_READ_UINT16_LE (data) < 2)
return;
data += 2;
if (GST_READ_UINT16_LE (data) != 0)
return;
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, CMML_CAPS);
}
@ -2133,6 +2155,7 @@ plugin_init (GstPlugin * plugin)
"msstyles", "cpl", NULL
};
static gchar *flv_exts[] = { "flv", NULL };
static gchar *m4v_exts[] = { "m4v" };
GST_DEBUG_CATEGORY_INIT (type_find_debug, "typefindfunctions",
GST_DEBUG_FG_GREEN | GST_DEBUG_BG_RED, "generic type find functions");
@ -2181,6 +2204,8 @@ plugin_init (GstPlugin * plugin)
TYPE_FIND_REGISTER (plugin, "video/mpeg-stream", GST_RANK_MARGINAL,
mpeg_video_stream_type_find, mpeg_video_exts, MPEG_VIDEO_CAPS, NULL,
NULL);
TYPE_FIND_REGISTER (plugin, "video/mpeg", GST_RANK_PRIMARY,
mpeg4_video_type_find, m4v_exts, MPEG_VIDEO_CAPS, NULL, NULL);
/* ISO formats */
TYPE_FIND_REGISTER (plugin, "audio/x-m4a", GST_RANK_PRIMARY, m4a_type_find,