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mpegts: Add creation of DVB Subtitling descriptor

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Descriptor tag is 0x59
This commit is contained in:
Jesper Larsen 2013-11-19 11:15:52 +01:00
parent cfb4da7215
commit 05bf952384
2 changed files with 38 additions and 1 deletions
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36
gst-libs/gst/mpegts/gst-dvb-descriptor.c
View file

@ -390,7 +390,7 @@ gst_mpegts_descriptor_parse_dvb_teletext_nb (const GstMpegTsDescriptor *
* gst_mpegts_descriptor_parse_dvb_subtitling_idx:
* @descriptor: a %GST_MTS_DESC_DVB_SUBTITLING #GstMpegTsDescriptor
* @idx: Table id of the entry to parse
* @lang (out) (transfer none): 4-byte gchar array to hold the language code
* @lang: (out) (transfer none): 4-byte gchar array to hold the language code
* @type: (out) (transfer none) (allow-none): the type of subtitling
* @composition_page_id: (out) (transfer none) (allow-none): the composition page id
* @ancillary_page_id: (out) (transfer none) (allow-none): the ancillary page id
@ -450,3 +450,37 @@ gst_mpegts_descriptor_parse_dvb_subtitling_nb (const GstMpegTsDescriptor *
return descriptor->length / 8;
}
/**
* gst_mpegts_descriptor_from_dvb_subtitling:
* @lang: (transfer none): a string containing the ISO639 language
* @type: subtitling type
* @composition: composition page id
* @ancillary: ancillary page id
*/
GstMpegTsDescriptor *
gst_mpegts_descriptor_from_dvb_subtitling (const gchar * lang,
guint8 type, guint16 composition, guint16 ancillary)
{
GstMpegTsDescriptor *descriptor;
guint8 *data;
g_return_val_if_fail (lang != NULL, NULL);
descriptor = _new_descriptor (GST_MTS_DESC_DVB_SUBTITLING, 8);
data = descriptor->data + 2;
memcpy (data, lang, 3);
data += 3;
*data++ = type;
GST_WRITE_UINT16_BE (data, composition);
data += 2;
GST_WRITE_UINT16_BE (data, ancillary);
data += 2;
return descriptor;
}

3
gst-libs/gst/mpegts/gst-dvb-descriptor.h
View file

@ -370,6 +370,9 @@ gboolean gst_mpegts_descriptor_parse_dvb_subtitling_idx (const GstMpegTsDescript
guint16 *ancillary_page_id);
guint gst_mpegts_descriptor_parse_dvb_subtitling_nb (const GstMpegTsDescriptor *descriptor);
GstMpegTsDescriptor * gst_mpegts_descriptor_from_dvb_subtitling (const gchar *lang,
guint8 type, guint16 composition, guint16 ancillary);
/* GST_MTS_DESC_DVB_TERRESTRIAL_DELIVERY_SYSTEM (0x5A) */