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mpegts: Add parsing for CA descriptor (0x05)
https://bugzilla.gnome.org/show_bug.cgi?id=732986
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2 changed files with 48 additions and 0 deletions
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@ -872,6 +872,47 @@ gst_mpegts_descriptor_from_registration (const gchar * format_identifier,
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return descriptor;
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}
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/* GST_MTS_DESC_CA (0x09) */
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/**
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* gst_mpegts_descriptor_parse_ca:
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* @descriptor: a %GST_MTS_DESC_CA #GstMpegtsDescriptor
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* @ca_system_id: (out): the type of CA system used
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* @ca_pid: (out): The PID containing ECM or EMM data
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* @private_data: (out) (allow-none): The private data
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* @private_data_size: (out) (allow-none): The size of @private_data in bytes
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*
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* Extracts the Conditional Access information from @descriptor.
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*
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* Returns: %TRUE if parsing succeeded, else %FALSE.
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*/
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gboolean
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gst_mpegts_descriptor_parse_ca (GstMpegtsDescriptor * descriptor,
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guint16 * ca_system_id, guint16 * ca_pid,
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const guint8 ** private_data, gsize * private_data_size)
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{
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guint8 *data;
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g_return_val_if_fail (descriptor != NULL && ca_system_id != NULL
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&& ca_pid != NULL, FALSE);
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/* The smallest CA is 4 bytes (though not having any private data
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* sounds a bit ... weird) */
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__common_desc_checks (descriptor, GST_MTS_DESC_CA, 4, FALSE);
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data = (guint8 *) descriptor->data + 2;
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*ca_system_id = GST_READ_UINT16_BE (data);
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data += 2;
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*ca_pid = GST_READ_UINT16_BE (data) & 0x1fff;
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data += 2;
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if (private_data && private_data_size) {
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*private_data = data;
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*private_data_size = descriptor->length - 4;
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}
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return TRUE;
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}
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/* GST_MTS_DESC_ISO_639_LANGUAGE (0x0A) */
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static GstMpegtsISO639LanguageDescriptor *
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_gst_mpegts_iso_639_language_descriptor_copy (GstMpegtsISO639LanguageDescriptor
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@ -274,6 +274,13 @@ GstMpegtsDescriptor *gst_mpegts_descriptor_from_registration (
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const gchar *format_identifier,
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guint8 *additional_info, gsize additional_info_length);
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/* GST_MTS_DESC_CA (0x09) */
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gboolean gst_mpegts_descriptor_parse_ca (GstMpegtsDescriptor *descriptor,
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guint16 *ca_system_id,
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guint16 *ca_pid,
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const guint8 **private_data,
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gsize *private_data_size);
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/* GST_MTS_DESC_ISO_639_LANGUAGE (0x0A) */
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/**
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* GstMpegtsISO639AudioType:
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