mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-09-09 05:38:58 +00:00
qtmux: Maps 'classification' tag for 3gpp files
Adds the mapping of 'classification' tags to writing of 'clsf' atoms for gppmux. Based on a patch by: Lasse Laukkanen <ext-lasse.2.laukkanen@nokia.com>
This commit is contained in:
parent
4111d6321f
commit
c996ac4c53
3 changed files with 135 additions and 0 deletions
|
@ -195,6 +195,7 @@ G_BEGIN_DECLS
|
|||
#define FOURCC_albm GST_MAKE_FOURCC('a','l','b','m')
|
||||
#define FOURCC_loci GST_MAKE_FOURCC('l','o','c','i')
|
||||
#define FOURCC_kywd GST_MAKE_FOURCC('k','y','w','d')
|
||||
#define FOURCC_clsf GST_MAKE_FOURCC('c','l','s','f')
|
||||
|
||||
/* For Microsoft Wave formats embedded in quicktime, the FOURCC is
|
||||
'm', 's', then the 16 bit wave codec id */
|
||||
|
|
|
@ -642,6 +642,118 @@ gst_qt_mux_add_3gp_keywords (GstQTMux * qtmux, const GstTagList * list,
|
|||
g_free (ddata);
|
||||
}
|
||||
|
||||
static gboolean
|
||||
gst_qt_mux_parse_classification_string (GstQTMux * qtmux, const gchar * input,
|
||||
guint32 * p_fourcc, guint16 * p_table, gchar ** p_content)
|
||||
{
|
||||
guint32 fourcc;
|
||||
gint table;
|
||||
gint size;
|
||||
const gchar *data;
|
||||
|
||||
data = input;
|
||||
size = strlen (input);
|
||||
|
||||
if (size < 4 + 3 + 1 + 1 + 1) {
|
||||
/* at least the minimum xxxx://y/z */
|
||||
GST_WARNING_OBJECT (qtmux, "Classification tag input (%s) too short, "
|
||||
"ignoring", input);
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
/* read the fourcc */
|
||||
memcpy (&fourcc, data, 4);
|
||||
size -= 4;
|
||||
data += 4;
|
||||
|
||||
if (strncmp (data, "://", 3) != 0) {
|
||||
goto mismatch;
|
||||
}
|
||||
data += 3;
|
||||
size -= 3;
|
||||
|
||||
/* read the table number */
|
||||
if (sscanf (data, "%d", &table) != 1) {
|
||||
goto mismatch;
|
||||
}
|
||||
if (table < 0) {
|
||||
GST_WARNING_OBJECT (qtmux, "Invalid table number in classification tag (%d)"
|
||||
", table numbers should be positive, ignoring tag", table);
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
/* find the next / */
|
||||
while (size > 0 && data[0] != '/') {
|
||||
data += 1;
|
||||
size -= 1;
|
||||
}
|
||||
if (size == 0) {
|
||||
goto mismatch;
|
||||
}
|
||||
g_assert (data[0] == '/');
|
||||
|
||||
/* skip the '/' */
|
||||
data += 1;
|
||||
size -= 1;
|
||||
if (size == 0) {
|
||||
goto mismatch;
|
||||
}
|
||||
|
||||
/* read up the rest of the string */
|
||||
*p_content = g_strdup (data);
|
||||
*p_table = (guint16) table;
|
||||
*p_fourcc = fourcc;
|
||||
return TRUE;
|
||||
|
||||
mismatch:
|
||||
{
|
||||
GST_WARNING_OBJECT (qtmux, "Ignoring classification tag as "
|
||||
"input (%s) didn't match the expected entitycode://table/content",
|
||||
input);
|
||||
return FALSE;
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
gst_qt_mux_add_3gp_classification (GstQTMux * qtmux, const GstTagList * list,
|
||||
const char *tag, const char *tag2, guint32 fourcc)
|
||||
{
|
||||
gchar *clsf_data = NULL;
|
||||
gint size = 0;
|
||||
guint32 entity = 0;
|
||||
guint16 table = 0;
|
||||
gchar *content = NULL;
|
||||
guint8 *data;
|
||||
|
||||
g_return_if_fail (strcmp (tag, GST_TAG_3GP_CLASSIFICATION) == 0);
|
||||
|
||||
if (!gst_tag_list_get_string (list, tag, &clsf_data) || !clsf_data)
|
||||
return;
|
||||
|
||||
GST_DEBUG_OBJECT (qtmux, "Adding tag %" GST_FOURCC_FORMAT " -> %s",
|
||||
GST_FOURCC_ARGS (fourcc), clsf_data);
|
||||
|
||||
/* parse the string, format is:
|
||||
* entityfourcc://table/content
|
||||
*/
|
||||
gst_qt_mux_parse_classification_string (qtmux, clsf_data, &entity, &table,
|
||||
&content);
|
||||
g_free (clsf_data);
|
||||
/* +1 for the \0 */
|
||||
size = strlen (content) + 1;
|
||||
|
||||
/* now we have everything, build the atom
|
||||
* atom description is at 3GPP TS 26.244 V8.2.0 (2009-09) */
|
||||
data = g_malloc (4 + 2 + 2 + size);
|
||||
GST_WRITE_UINT32_LE (data, entity);
|
||||
GST_WRITE_UINT16_BE (data + 4, (guint16) table);
|
||||
GST_WRITE_UINT16_BE (data + 6, 0);
|
||||
memcpy (data + 8, content, size);
|
||||
g_free (content);
|
||||
|
||||
atom_moov_add_3gp_tag (qtmux->moov, fourcc, data, 4 + 2 + 2 + size);
|
||||
g_free (data);
|
||||
}
|
||||
|
||||
typedef void (*GstQTMuxAddTagFunc) (GstQTMux * mux, const GstTagList * list,
|
||||
const char *tag, const char *tag2, guint32 fourcc);
|
||||
|
@ -690,6 +802,8 @@ static const GstTagToFourcc tag_matches_3gp[] = {
|
|||
{FOURCC_yrrc, GST_TAG_DATE, NULL, gst_qt_mux_add_3gp_date},
|
||||
{FOURCC_albm, GST_TAG_ALBUM, GST_TAG_TRACK_NUMBER, gst_qt_mux_add_3gp_str},
|
||||
{FOURCC_loci, GST_TAG_GEO_LOCATION_NAME, NULL, gst_qt_mux_add_3gp_location},
|
||||
{FOURCC_clsf, GST_TAG_3GP_CLASSIFICATION, NULL,
|
||||
gst_qt_mux_add_3gp_classification},
|
||||
{0, NULL,}
|
||||
};
|
||||
|
||||
|
@ -2312,6 +2426,18 @@ gst_qt_mux_register (GstPlugin * plugin)
|
|||
|
||||
GST_LOG ("Finished registering muxers");
|
||||
|
||||
/* FIXME: ideally classification tag should be added and
|
||||
registered in gstreamer core gsttaglist
|
||||
*/
|
||||
|
||||
GST_LOG ("Registering tags");
|
||||
|
||||
gst_tag_register (GST_TAG_3GP_CLASSIFICATION, GST_TAG_FLAG_META,
|
||||
G_TYPE_STRING, GST_TAG_3GP_CLASSIFICATION, "content classification",
|
||||
gst_tag_merge_use_first);
|
||||
|
||||
GST_LOG ("Finished registering tags");
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
|
|
|
@ -159,6 +159,14 @@ typedef struct _GstQTMuxClassParams
|
|||
|
||||
GType gst_qt_mux_get_type (void);
|
||||
|
||||
/* FIXME: ideally classification tag should be added and
|
||||
* registered in gstreamer core gsttaglist
|
||||
*
|
||||
* this tag is a string in the format: entityfourcc://table_num/content
|
||||
* FIXME Shouldn't we add a field for 'language'?
|
||||
*/
|
||||
#define GST_TAG_3GP_CLASSIFICATION "classification"
|
||||
|
||||
G_END_DECLS
|
||||
|
||||
#endif /* __GST_QT_MUX_H__ */
|
||||
|
|
Loading…
Reference in a new issue