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gst/typefind/gsttypefindfunctions.c: Rearrange MPEG system stream detection, fixing some memleaks in the process.

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Original commit message from CVS:
* gst/typefind/gsttypefindfunctions.c: (mpeg2_sys_type_find),
(mpeg1_sys_type_find), (ogganx_type_find), (sw_data_destroy):
Rearrange MPEG system stream detection, fixing some memleaks in the
process.
Constify the data for STARTS_WITH and RIFF helper handlers. Make sure
they clean up their data correctly.
Remove unused ogganx caps and move the 'is_annodex' check to inside
the 'is_ogg' if statement.
This commit is contained in:
Jan Schmidt 2006-05-05 12:37:35 +00:00
parent d612f665ce
commit 077ba91468
2 changed files with 67 additions and 51 deletions
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11
ChangeLog
View file

@ -1,3 +1,14 @@
2006-05-05 Jan Schmidt <thaytan@mad.scientist.com>
* gst/typefind/gsttypefindfunctions.c: (mpeg2_sys_type_find),
(mpeg1_sys_type_find), (ogganx_type_find), (sw_data_destroy):
Rearrange MPEG system stream detection, fixing some memleaks in the
process.
Constify the data for STARTS_WITH and RIFF helper handlers. Make sure
they clean up their data correctly.
Remove unused ogganx caps and move the 'is_annodex' check to inside
the 'is_ogg' if statement.
2006-05-05 Wim Taymans <wim@fluendo.com>
* gst/playback/gstdecodebin.c: (cleanup_decodebin):

107
gst/typefind/gsttypefindfunctions.c
View file

@ -893,56 +893,56 @@ wavpack_type_find (GstTypeFind * tf, gpointer unused)
static GstStaticCaps mpeg_sys_caps = GST_STATIC_CAPS ("video/mpeg, "
"systemstream = (boolean) true, mpegversion = (int) [ 1, 2 ]");
#define MPEG_SYS_CAPS gst_static_caps_get(&mpeg_sys_caps)
#define IS_MPEG_HEADER(data) ((((guint8 *)data)[0] == 0x00) && \
(((guint8 *)data)[1] == 0x00) && \
(((guint8 *)data)[2] == 0x01) && \
(((guint8 *)data)[3] == 0xBA))
#define IS_MPEG_SYSTEM_HEADER(data) ((((guint8 *)data)[0] == 0x00) && \
(((guint8 *)data)[1] == 0x00) && \
(((guint8 *)data)[2] == 0x01) && \
(((guint8 *)data)[3] == 0xBB))
#define IS_MPEG_PACKET_HEADER(data) ((((guint8 *)data)[0] == 0x00) && \
(((guint8 *)data)[1] == 0x00) && \
(((guint8 *)data)[2] == 0x01) && \
((((guint8 *)data)[3] & 0x80) == 0x80))
#define IS_MPEG_PES_HEADER(data) ((((guint8 *)data)[0] == 0x00) && \
(((guint8 *)data)[1] == 0x00) && \
(((guint8 *)data)[2] == 0x01) && \
((((guint8 *)data)[3] == 0xE0) || \
(((guint8 *)data)[3] == 0xC0) || \
(((guint8 *)data)[3] == 0xBD)))
#define IS_MPEG_HEADER(data) ((((guint8 *)(data))[0] == 0x00) && \
(((guint8 *)(data))[1] == 0x00) && \
(((guint8 *)(data))[2] == 0x01))
#define IS_MPEG_PACK_HEADER(data) (IS_MPEG_HEADER (data) && \
(((guint8 *)(data))[3] == 0xBA))
#define IS_MPEG_SYSTEM_HEADER(data) (IS_MPEG_HEADER (data) && \
(((guint8 *)(data))[3] == 0xBB))
#define IS_MPEG_PACKET_HEADER(data) (IS_MPEG_HEADER (data) && \
((((guint8 *)(data))[3] & 0x80) == 0x80))
#define IS_MPEG_PES_HEADER(data) (IS_MPEG_HEADER (data) && \
((((guint8 *)(data))[3] == 0xE0) || \
(((guint8 *)(data))[3] == 0xC0) || \
(((guint8 *)(data))[3] == 0xBD)))
static void
mpeg2_sys_type_find (GstTypeFind * tf, gpointer unused)
{
guint8 *data = gst_type_find_peek (tf, 0, 5);
gint mpegversion;
if (data && IS_MPEG_HEADER (data)) {
if (data && IS_MPEG_PACK_HEADER (data)) {
if ((data[4] & 0xC0) == 0x40) {
/* type 2 */
GstCaps *caps = gst_caps_copy (MPEG_SYS_CAPS);
gst_structure_set (gst_caps_get_structure (caps, 0), "mpegversion",
G_TYPE_INT, 2, NULL);
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, caps);
mpegversion = 2;
goto suggest;
} else if ((data[4] & 0xF0) == 0x20) {
GstCaps *caps = gst_caps_copy (MPEG_SYS_CAPS);
gst_structure_set (gst_caps_get_structure (caps, 0), "mpegversion",
G_TYPE_INT, 1, NULL);
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, caps);
gst_caps_unref (caps);
mpegversion = 1;
goto suggest;
}
} else if (data && IS_MPEG_PES_HEADER (data)) {
/* PES stream */
mpegversion = 2;
goto suggest;
}
return;
suggest:
{
GstCaps *caps = gst_caps_copy (MPEG_SYS_CAPS);
gst_structure_set (gst_caps_get_structure (caps, 0), "mpegversion",
G_TYPE_INT, 2, NULL);
G_TYPE_INT, mpegversion, NULL);
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, caps);
gst_caps_unref (caps);
}
};
/* ATTENTION: ugly return value:
@ -1055,7 +1055,7 @@ mpeg1_sys_type_find (GstTypeFind * tf, gpointer unused)
break;
size = GST_MPEG_TYPEFIND_SYNC_SIZE;
}
if (IS_MPEG_HEADER (data)) {
if (IS_MPEG_PACK_HEADER (data)) {
/* found packet start code */
guint found = 0;
guint packet_size = 0;
@ -1856,26 +1856,21 @@ dv_type_find (GstTypeFind * tf, gpointer private)
/*** application/ogg and application/x-annodex ***/
static GstStaticCaps ogg_caps = GST_STATIC_CAPS ("application/ogg");
static GstStaticCaps annodex_caps = GST_STATIC_CAPS ("application/x-annodex");
static GstStaticCaps ogganx_caps =
GST_STATIC_CAPS ("application/ogg; application/x-annodex");
#define OGGANX_CAPS (gst_static_caps_get(&ogganx_caps))
#define OGGANX_CAPS (gst_static_caps_get(&annodex_caps))
static void
ogganx_type_find (GstTypeFind * tf, gpointer private)
{
guint8 *data = gst_type_find_peek (tf, 28, 8);
gboolean is_annodex = FALSE;
guint8 *data = gst_type_find_peek (tf, 0, 4);
if ((data != NULL) && (memcmp (data, "fishead\0", 8) == 0)) {
is_annodex = TRUE;
}
data = gst_type_find_peek (tf, 0, 4);
if ((data != NULL) && (memcmp (data, "OggS", 4) == 0)) {
if (is_annodex == TRUE) {
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM,
gst_static_caps_get (&annodex_caps));
}
/* Check for an annodex fishbone header */
data = gst_type_find_peek (tf, 28, 8);
if (memcmp (data, "fishead\0", 8) == 0)
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM, OGGANX_CAPS);
gst_type_find_suggest (tf, GST_TYPE_FIND_MAXIMUM,
gst_static_caps_get (&ogg_caps));
}
@ -2206,7 +2201,7 @@ msdos_type_find (GstTypeFind * tf, gpointer unused)
/*** generic typefind for streams that have some data at a specific position***/
typedef struct
{
guint8 *data;
const guint8 *data;
guint size;
guint probability;
GstCaps *caps;
@ -2228,15 +2223,24 @@ start_with_type_find (GstTypeFind * tf, gpointer private)
}
}
static void
sw_data_destroy (GstTypeFindData * sw_data)
{
if (G_LIKELY (sw_data->caps != NULL))
gst_caps_unref (sw_data->caps);
g_free (sw_data);
}
#define TYPE_FIND_REGISTER_START_WITH(plugin,name,rank,ext,_data,_size,_probability)\
G_BEGIN_DECLS{ \
GstTypeFindData *sw_data = g_new (GstTypeFindData, 1); \
sw_data->data = (gpointer)_data; \
sw_data->data = (const guint8 *)_data; \
sw_data->size = _size; \
sw_data->probability = _probability; \
sw_data->caps = gst_caps_new_simple (name, NULL); \
if (!gst_type_find_register (plugin, name, rank, start_with_type_find,\
ext, sw_data->caps, sw_data, (GDestroyNotify) (g_free))) { \
ext, sw_data->caps, sw_data, \
(GDestroyNotify) (sw_data_destroy))) { \
gst_caps_unref (sw_data->caps); \
g_free (sw_data); \
} \
@ -2265,7 +2269,8 @@ G_BEGIN_DECLS{ \
sw_data->probability = GST_TYPE_FIND_MAXIMUM; \
sw_data->caps = gst_caps_new_simple (name, NULL); \
if (!gst_type_find_register (plugin, name, rank, riff_type_find, \
ext, sw_data->caps, sw_data, (GDestroyNotify) (g_free))) { \
ext, sw_data->caps, sw_data, \
(GDestroyNotify) (sw_data_destroy))) { \
gst_caps_unref (sw_data->caps); \
g_free (sw_data); \
} \