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mpegts: Support registration and custom descriptor

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Support for registration descriptor (0x05)
Add function to create a descriptor with custom tag and data
This commit is contained in:
Jesper Larsen 2013-11-19 11:30:33 +01:00
parent 05bf952384
commit b7d256b4c2
2 changed files with 61 additions and 0 deletions
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52
gst-libs/gst/mpegts/gstmpegtsdescriptor.c
View file

@ -830,6 +830,34 @@ gst_mpegts_find_descriptor (GPtrArray * descriptors, guint8 tag)
return NULL;
}
/* GST_MTS_DESC_REGISTRATION (0x05) */
/**
* gst_mpegts_descriptor_from_registration:
* @format_identifier: (transfer none): a 4 character format identifier string
* @additional_info: (transfer none) (allow-none): pointer to optional additional info
* @additional_info_length: length of the optional @additional_info
*
* Creates a %GST_MTS_DESC_REGISTRATION #GstMpegTsDescriptor
*
* Return: #GstMpegTsDescriptor, %NULL on failure
*/
GstMpegTsDescriptor *
gst_mpegts_descriptor_from_registration (const gchar * format_identifier,
guint8 * additional_info, gsize additional_info_length)
{
GstMpegTsDescriptor *descriptor;
g_return_val_if_fail (format_identifier != NULL, NULL);
descriptor = _new_descriptor (GST_MTS_DESC_REGISTRATION,
4 + additional_info_length);
memcpy (descriptor->data + 2, format_identifier, 4);
if (additional_info && (additional_info_length > 0))
memcpy (descriptor->data + 6, additional_info, additional_info_length);
return descriptor;
}
/* GST_MTS_DESC_ISO_639_LANGUAGE (0x0A) */
/**
@ -957,3 +985,27 @@ gst_mpegts_descriptor_parse_logical_channel (const GstMpegTsDescriptor *
return TRUE;
}
/**
* gst_mpegts_descriptor_from_custom:
* @tag: descriptor tag
* @data: (transfer none): descriptor data (after tag and length field)
* @length: length of @data
*
* Creates a #GstMpegTsDescriptor with custom @tag and @data
*
* Returns: #GstMpegTsDescriptor
*/
GstMpegTsDescriptor *
gst_mpegts_descriptor_from_custom (guint8 tag, const guint8 * data,
gsize length)
{
GstMpegTsDescriptor *descriptor;
descriptor = _new_descriptor (tag, length);
if (data && (length > 0))
memcpy (descriptor->data + 2, data, length);
return descriptor;
}

9
gst-libs/gst/mpegts/gstmpegtsdescriptor.h
View file

@ -262,6 +262,12 @@ GPtrArray *gst_mpegts_parse_descriptors (guint8 * buffer, gsize buf_len);
const GstMpegTsDescriptor * gst_mpegts_find_descriptor (GPtrArray *descriptors,
guint8 tag);
/* GST_MTS_DESC_REGISTRATION (0x05) */
GstMpegTsDescriptor *gst_mpegts_descriptor_from_registration (
const gchar *format_identifier,
guint8 *additional_info, gsize additional_info_length);
/* GST_MTS_DESC_ISO_639_LANGUAGE (0x0A) */
/**
* GstMpegTsISO639AudioType:
@ -317,6 +323,9 @@ gboolean
gst_mpegts_descriptor_parse_logical_channel (const GstMpegTsDescriptor *descriptor,
GstMpegTsLogicalChannelDescriptor *res);
GstMpegTsDescriptor *
gst_mpegts_descriptor_from_custom (guint8 tag, const guint8 *data, gsize length);
G_END_DECLS
#endif /* GST_MPEGTS_DESCRIPTOR_H */