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mpegts: Add support for DVB terrestrial delivery system descriptor
https://bugzilla.gnome.org/show_bug.cgi?id=724069
This commit is contained in:
Stefan Ringel
Sebastian Dröge
parent
22b4223c86
commit
e6cb996cea
2 changed files with 258 additions and 2 deletions
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@ -48,7 +48,6 @@
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* * GST_MTS_DESC_DVB_STREAM_IDENTIFIER
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* * GST_MTS_DESC_DVB_EXTENDED_EVENT
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* * GST_MTS_DESC_DVB_COMPONENT
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* * GST_MTS_DESC_DVB_TERRESTRIAL_DELIVERY_SYSTEM
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* * GST_MTS_DESC_DVB_FREQUENCY_LIST
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*/
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@ -483,3 +482,179 @@ gst_mpegts_descriptor_from_dvb_subtitling (const gchar * lang,
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return descriptor;
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}
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/* GST_MTS_DESC_DVB_TERRESTRIAL_DELIVERY_SYSTEM (0x5A) */
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/**
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* gst_mpegts_descriptor_parse_dvb_terrestrial_delivary_system:
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* @descriptor: a %GST_MTS_DESC_DVB_CONTENT #GstMpegTsDescriptor
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* @res: (out) (transfer none): #GstMpegTsTerrestrialSystemDescriptor
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*
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* Parses out the terrestrial delivery system from the @descriptor:
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*
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* Returns: %TRUE if the parsing happened correctly, else %FALSE.
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*/
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gboolean
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gst_mpegts_descriptor_parse_terrestrial_delivery_system (const
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GstMpegTsDescriptor * descriptor,
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GstMpegTsTerrestrialDeliverySystemDescriptor * res)
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{
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guint8 *data;
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guint8 tmp;
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g_return_val_if_fail (descriptor != NULL && descriptor->data != NULL, FALSE);
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g_return_val_if_fail (res != NULL, FALSE);
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g_return_val_if_fail (descriptor->tag == 0x5a, FALSE);
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data = (guint8 *) descriptor->data + 2;
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res->frequency = 0;
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res->frequency =
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*(data + 3) | *(data + 2) << 8 | *(data + 1) << 16 | *data << 24;
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res->frequency *= 10;
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data += 4;
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tmp = *data;
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switch ((tmp >> 5) & 0x07) {
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case 0:
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res->bandwidth = GST_MPEGTS_BANDWIDTH_8;
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break;
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case 1:
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res->bandwidth = GST_MPEGTS_BANDWIDTH_7;
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break;
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case 2:
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res->bandwidth = GST_MPEGTS_BANDWIDTH_6;
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break;
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case 3:
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res->bandwidth = GST_MPEGTS_BANDWIDTH_5;
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break;
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default:
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res->bandwidth = GST_MPEGTS_BANDWIDTH_AUTO;
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break;
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}
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res->priority = (tmp >> 4) & 0x01;
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res->time_slicing = (tmp >> 3) & 0x01;
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res->mpe_fec = (tmp >> 2) & 0x01;
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data += 1;
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tmp = *data;
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switch ((tmp >> 6) & 0x03) {
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case 0:
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res->constellation = GST_MPEGTS_MODULATION_QPSK;
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break;
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case 1:
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res->constellation = GST_MPEGTS_MODULATION_QAM_16;
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break;
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case 2:
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res->constellation = GST_MPEGTS_MODULATION_QAM_64;
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break;
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default:
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break;
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}
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switch ((tmp >> 3) & 0x07) {
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case 0:
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res->hierarchy = GST_MPEGTS_HIERARCHY_NONE;
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break;
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case 1:
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res->hierarchy = GST_MPEGTS_HIERARCHY_1;
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break;
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case 2:
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res->hierarchy = GST_MPEGTS_HIERARCHY_2;
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break;
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case 3:
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res->hierarchy = GST_MPEGTS_HIERARCHY_4;
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break;
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case 4:
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res->hierarchy = GST_MPEGTS_HIERARCHY_NONE;
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break;
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case 5:
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res->hierarchy = GST_MPEGTS_HIERARCHY_1;
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break;
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case 6:
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res->hierarchy = GST_MPEGTS_HIERARCHY_2;
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break;
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case 7:
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res->hierarchy = GST_MPEGTS_HIERARCHY_4;
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break;
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default:
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break;
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}
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switch (tmp & 0x07) {
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case 0:
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res->code_rate_hp = GST_MPEGTS_FEC_1_2;
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break;
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case 1:
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res->code_rate_hp = GST_MPEGTS_FEC_2_3;
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break;
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case 2:
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res->code_rate_hp = GST_MPEGTS_FEC_3_4;
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break;
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case 3:
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res->code_rate_hp = GST_MPEGTS_FEC_5_6;
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break;
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case 4:
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res->code_rate_hp = GST_MPEGTS_FEC_7_8;
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break;
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default:
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break;
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}
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data += 1;
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tmp = *data;
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switch ((tmp >> 5) & 0x07) {
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case 0:
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res->code_rate_lp = GST_MPEGTS_FEC_1_2;
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break;
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case 1:
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res->code_rate_lp = GST_MPEGTS_FEC_2_3;
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break;
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case 2:
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res->code_rate_lp = GST_MPEGTS_FEC_3_4;
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break;
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case 3:
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res->code_rate_lp = GST_MPEGTS_FEC_5_6;
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break;
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case 4:
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res->code_rate_lp = GST_MPEGTS_FEC_7_8;
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break;
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default:
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break;
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}
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switch ((tmp >> 3) & 0x03) {
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case 0:
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res->guard_interval = GST_MPEGTS_GUARD_INTERVAL_1_32;
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break;
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case 1:
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res->guard_interval = GST_MPEGTS_GUARD_INTERVAL_1_16;
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break;
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case 2:
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res->guard_interval = GST_MPEGTS_GUARD_INTERVAL_1_8;
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break;
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case 3:
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res->guard_interval = GST_MPEGTS_GUARD_INTERVAL_1_4;
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break;
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default:
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break;
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}
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switch ((tmp >> 1) & 0x03) {
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case 0:
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res->transmission_mode = GST_MPEGTS_TRANSMISSION_MODE_2K;
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break;
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case 1:
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res->transmission_mode = GST_MPEGTS_TRANSMISSION_MODE_4K;
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break;
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case 2:
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res->transmission_mode = GST_MPEGTS_TRANSMISSION_MODE_8K;
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break;
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default:
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break;
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}
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res->other_frequency = tmp & 0x01;
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return TRUE;
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}
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@ -376,7 +376,88 @@ GstMpegTsDescriptor * gst_mpegts_descriptor_from_dvb_subtitling (const gchar *la
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/* GST_MTS_DESC_DVB_TERRESTRIAL_DELIVERY_SYSTEM (0x5A) */
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/* FIXME : Implement */
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typedef struct _GstMpegTsTerrestrialDeliverySystemDescriptor GstMpegTsTerrestrialDeliverySystemDescriptor;
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typedef enum {
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GST_MPEGTS_BANDWIDTH_8 = 0,
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GST_MPEGTS_BANDWIDTH_7,
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GST_MPEGTS_BANDWIDTH_6,
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GST_MPEGTS_BANDWIDTH_AUTO,
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GST_MPEGTS_BANDWIDTH_5,
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GST_MPEGTS_BANDWIDTH_10,
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GST_MPEGTS_BANDWIDTH_1_172
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} GstMpegTsTerrestrialBandwidth;
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typedef enum {
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GST_MPEGTS_TRANSMISSION_MODE_2K = 0,
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GST_MPEGTS_TRANSMISSION_MODE_8K,
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GST_MPEGTS_TRANSMISSION_MODE_AUTO,
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GST_MPEGTS_TRANSMISSION_MODE_4K,
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GST_MPEGTS_TRANSMISSION_MODE_1K,
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GST_MPEGTS_TRANSMISSION_MODE_16K,
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GST_MPEGTS_TRANSMISSION_MODE_32K,
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GST_MPEGTS_TRANSMISSION_MODE_C1,
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GST_MPEGTS_TRANSMISSION_MODE_C3780
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} GstMpegTsTerrestrialTransmissionMode;
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typedef enum {
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GST_MPEGTS_GUARD_INTERVAL_1_32 = 0,
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GST_MPEGTS_GUARD_INTERVAL_1_16,
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GST_MPEGTS_GUARD_INTERVAL_1_8,
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GST_MPEGTS_GUARD_INTERVAL_1_4,
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GST_MPEGTS_GUARD_INTERVAL_AUTO,
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GST_MPEGTS_GUARD_INTERVAL_1_128,
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GST_MPEGTS_GUARD_INTERVAL_19_128,
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GST_MPEGTS_GUARD_INTERVAL_19_256,
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GST_MPEGTS_GUARD_INTERVAL_PN420,
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GST_MPEGTS_GUARD_INTERVAL_PN595,
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GST_MPEGTS_GUARD_INTERVAL_PN945
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} GstMpegTsTerrestrialGuardInterval;
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typedef enum {
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GST_MPEGTS_HIERARCHY_NONE = 0,
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GST_MPEGTS_HIERARCHY_1,
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GST_MPEGTS_HIERARCHY_2,
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GST_MPEGTS_HIERARCHY_4,
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GST_MPEGTS_HIERARCHY_AUTO
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} GstMpegTsTerrestrialHierarchy;
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/**
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* GstMpegTsTerrestrialDeliverySystemDescriptor:
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* @frequency: the frequency in Hz (Hertz)
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* @bandwidth: the bandwidth
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* @priority: %TRUE High Priority %FALSE Low Priority
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* @time_slicing: %TRUE no time slicing %FALSE time slicing
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* @mpe_fec: %TRUE no mpe-fec is used %FALSE mpe-fec is use
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* @constellation: the constallation
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* @hierarchy: the hierarchy
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* @code_rate_hp:
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* @code_rate_lp:
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* @guard_interval:
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* @transmission_mode:
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* @other_frequency: %TRUE more frequency are use, else not
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*
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* Terrestrial Delivery System Descriptor (EN 300 468 v.1.13.1)
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*/
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struct _GstMpegTsTerrestrialDeliverySystemDescriptor
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{
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guint32 frequency;
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GstMpegTsTerrestrialBandwidth bandwidth;
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gboolean priority;
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gboolean time_slicing;
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gboolean mpe_fec;
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GstMpegTsModulationType constellation;
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GstMpegTsTerrestrialHierarchy hierarchy;
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GstMpegTsDVBCodeRate code_rate_hp;
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GstMpegTsDVBCodeRate code_rate_lp;
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GstMpegTsTerrestrialGuardInterval guard_interval;
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GstMpegTsTerrestrialTransmissionMode transmission_mode;
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gboolean other_frequency;
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};
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gboolean gst_mpegts_descriptor_parse_terrestrial_delivery_system (const GstMpegTsDescriptor
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*descriptor, GstMpegTsTerrestrialDeliverySystemDescriptor * res);
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/* GST_MTS_DESC_DVB_FREQUENCY_LIST (0x62) */
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/* FIXME : Implement */
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