mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-29 19:50:40 +00:00
mpegts: add linkage descriptor
https://bugzilla.gnome.org/show_bug.cgi?id=727403
This commit is contained in:
Stefan Ringel
Sebastian Dröge
parent
990efe1fc0
commit
eb246e2bfd
3 changed files with 283 additions and 0 deletions
|
|
@ -292,6 +292,14 @@ gst_mpegts_descriptor_parse_dvb_teletext_nb
|
||||||
<SUBSECTION subtitling>
|
<SUBSECTION subtitling>
|
||||||
gst_mpegts_descriptor_parse_dvb_subtitling
|
gst_mpegts_descriptor_parse_dvb_subtitling
|
||||||
gst_mpegts_descriptor_from_dvb_subtitling
|
gst_mpegts_descriptor_from_dvb_subtitling
|
||||||
|
<SUBSECTION linkage>
|
||||||
|
GstMpegTsDVBLinkageType
|
||||||
|
GstMpegTsDVBLinkageHandOverType
|
||||||
|
GstMpegTsDVBLinkageMobileHandOver
|
||||||
|
GstMpegTsDVBLinkageEvent
|
||||||
|
GstMpegTsDVBLinkageExtendedEvent
|
||||||
|
GstMpegTsDVBLinkageDescriptor
|
||||||
|
gst_mpegts_descriptor_parse_dvb_linkage
|
||||||
<SUBSECTION data_broadcast>
|
<SUBSECTION data_broadcast>
|
||||||
GstMpegTsDataBroadcastDescriptor
|
GstMpegTsDataBroadcastDescriptor
|
||||||
gst_mpegts_descriptor_parse_dvb_data_broadcast
|
gst_mpegts_descriptor_parse_dvb_data_broadcast
|
||||||
|
|
|
||||||
|
|
@ -424,6 +424,185 @@ gst_mpegts_descriptor_from_dvb_service (GstMpegTsDVBServiceType service_type,
|
||||||
return descriptor;
|
return descriptor;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
/* GST_MTS_DESC_DVB_LINKAGE (0x4A) */
|
||||||
|
static void
|
||||||
|
_gst_mpegts_dvb_linkage_extened_event_free (GstMpegTsDVBLinkageExtendedEvent *
|
||||||
|
item)
|
||||||
|
{
|
||||||
|
g_slice_free (GstMpegTsDVBLinkageExtendedEvent, item);
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* gst_mpegts_descriptor_parse_dvb_linkage:
|
||||||
|
* @descriptor: a %GST_MTS_DESC_DVB_LINKAGE #GstMpegTsDescriptor
|
||||||
|
* @res: (out) (transfer none): the #GstMpegTsDVBLinkageDescriptor to fill
|
||||||
|
*
|
||||||
|
* Extracts the DVB linkage information from @descriptor.
|
||||||
|
*
|
||||||
|
* Returns: %TRUE if parsing succeeded, else %FALSE.
|
||||||
|
*/
|
||||||
|
gboolean
|
||||||
|
gst_mpegts_descriptor_parse_dvb_linkage (const GstMpegTsDescriptor * descriptor,
|
||||||
|
GstMpegTsDVBLinkageDescriptor * res)
|
||||||
|
{
|
||||||
|
guint8 *data, *end;
|
||||||
|
|
||||||
|
g_return_val_if_fail (descriptor != NULL && res != NULL, FALSE);
|
||||||
|
__common_desc_checks (descriptor, GST_MTS_DESC_DVB_LINKAGE, 7, FALSE);
|
||||||
|
|
||||||
|
data = (guint8 *) descriptor->data + 2;
|
||||||
|
end = data + descriptor->length;
|
||||||
|
|
||||||
|
res->transport_stream_id = GST_READ_UINT16_BE (data);
|
||||||
|
data += 2;
|
||||||
|
|
||||||
|
res->original_network_id = GST_READ_UINT16_BE (data);
|
||||||
|
data += 2;
|
||||||
|
|
||||||
|
res->service_id = GST_READ_UINT16_BE (data);
|
||||||
|
data += 2;
|
||||||
|
|
||||||
|
res->linkage_type = *data;
|
||||||
|
data += 1;
|
||||||
|
|
||||||
|
switch (res->linkage_type) {
|
||||||
|
case GST_MPEGTS_DVB_LINKAGE_MOBILE_HAND_OVER:{
|
||||||
|
GstMpegTsDVBLinkageMobileHandOver *hand_over;
|
||||||
|
|
||||||
|
if (end - data < 1)
|
||||||
|
return FALSE;
|
||||||
|
|
||||||
|
hand_over = g_slice_new0 (GstMpegTsDVBLinkageMobileHandOver);
|
||||||
|
res->linkage_data = (gpointer) hand_over;
|
||||||
|
|
||||||
|
hand_over->origin_type = (*data >> 7) & 0x01;
|
||||||
|
hand_over->hand_over_type = *data & 0x0f;
|
||||||
|
data += 1;
|
||||||
|
|
||||||
|
if (hand_over->hand_over_type ==
|
||||||
|
GST_MPEGTS_DVB_LINKAGE_HAND_OVER_IDENTICAL
|
||||||
|
|| hand_over->hand_over_type ==
|
||||||
|
GST_MPEGTS_DVB_LINKAGE_HAND_OVER_LOCAL_VARIATION
|
||||||
|
|| hand_over->hand_over_type ==
|
||||||
|
GST_MPEGTS_DVB_LINKAGE_HAND_OVER_ASSOCIATED) {
|
||||||
|
if (end - data < 2) {
|
||||||
|
g_slice_free (GstMpegTsDVBLinkageMobileHandOver, hand_over);
|
||||||
|
res->linkage_data = NULL;
|
||||||
|
return FALSE;
|
||||||
|
}
|
||||||
|
|
||||||
|
hand_over->network_id = GST_READ_UINT16_BE (data);
|
||||||
|
data += 2;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (hand_over->origin_type == 0) {
|
||||||
|
if (end - data < 2) {
|
||||||
|
g_slice_free (GstMpegTsDVBLinkageMobileHandOver, hand_over);
|
||||||
|
res->linkage_data = NULL;
|
||||||
|
return FALSE;
|
||||||
|
}
|
||||||
|
|
||||||
|
hand_over->initial_service_id = GST_READ_UINT16_BE (data);
|
||||||
|
data += 2;
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
case GST_MPEGTS_DVB_LINKAGE_EVENT:{
|
||||||
|
GstMpegTsDVBLinkageEvent *event;
|
||||||
|
|
||||||
|
if (end - data < 3)
|
||||||
|
return FALSE;
|
||||||
|
|
||||||
|
event = g_slice_new0 (GstMpegTsDVBLinkageEvent);
|
||||||
|
res->linkage_data = (gpointer) event;
|
||||||
|
|
||||||
|
event->target_event_id = GST_READ_UINT16_BE (data);
|
||||||
|
data += 2;
|
||||||
|
event->target_listed = *data & 0x01;
|
||||||
|
event->event_simulcast = (*data >> 1) & 0x01;
|
||||||
|
data += 1;
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
case GST_MPEGTS_DVB_LINKAGE_EXTENDED_EVENT:{
|
||||||
|
GPtrArray *ext_events;
|
||||||
|
ext_events = g_ptr_array_new_with_free_func ((GDestroyNotify)
|
||||||
|
_gst_mpegts_dvb_linkage_extened_event_free);
|
||||||
|
|
||||||
|
res->linkage_data = (gpointer) ext_events;
|
||||||
|
|
||||||
|
for (guint8 i = 0; i < *data++;) {
|
||||||
|
GstMpegTsDVBLinkageExtendedEvent *ext_event;
|
||||||
|
|
||||||
|
if (end - data < 3)
|
||||||
|
goto fail;
|
||||||
|
|
||||||
|
ext_event = g_slice_new0 (GstMpegTsDVBLinkageExtendedEvent);
|
||||||
|
g_ptr_array_add (res->linkage_data, ext_event);
|
||||||
|
|
||||||
|
ext_event->target_event_id = GST_READ_UINT16_BE (data);
|
||||||
|
data += 2;
|
||||||
|
i += 2;
|
||||||
|
|
||||||
|
ext_event->target_listed = *data & 0x01;
|
||||||
|
ext_event->event_simulcast = (*data >> 1) & 0x01;
|
||||||
|
ext_event->link_type = (*data >> 3) & 0x03;
|
||||||
|
ext_event->target_id_type = (*data >> 5) & 0x03;
|
||||||
|
ext_event->original_network_id_flag = (*data >> 6) & 0x01;
|
||||||
|
ext_event->service_id_flag = (*data >> 7) & 0x01;
|
||||||
|
data += 1;
|
||||||
|
i += 1;
|
||||||
|
|
||||||
|
if (ext_event->target_id_type == 3) {
|
||||||
|
if (end - data < 2)
|
||||||
|
goto fail;
|
||||||
|
|
||||||
|
ext_event->user_defined_id = GST_READ_UINT16_BE (data);
|
||||||
|
data += 2;
|
||||||
|
i += 2;
|
||||||
|
} else {
|
||||||
|
if (ext_event->target_id_type == 1) {
|
||||||
|
if (end - data < 2)
|
||||||
|
goto fail;
|
||||||
|
|
||||||
|
ext_event->target_transport_stream_id = GST_READ_UINT16_BE (data);
|
||||||
|
data += 2;
|
||||||
|
i += 2;
|
||||||
|
}
|
||||||
|
if (ext_event->original_network_id_flag) {
|
||||||
|
if (end - data < 2)
|
||||||
|
goto fail;
|
||||||
|
|
||||||
|
ext_event->target_original_network_id = GST_READ_UINT16_BE (data);
|
||||||
|
data += 2;
|
||||||
|
i += 2;
|
||||||
|
}
|
||||||
|
if (ext_event->service_id_flag) {
|
||||||
|
if (end - data < 2)
|
||||||
|
goto fail;
|
||||||
|
|
||||||
|
ext_event->target_service_id = GST_READ_UINT16_BE (data);
|
||||||
|
data += 2;
|
||||||
|
i += 2;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
default:
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
res->private_data_length = end - data;
|
||||||
|
res->private_data_bytes = g_memdup (data, res->private_data_length);
|
||||||
|
|
||||||
|
return TRUE;
|
||||||
|
|
||||||
|
fail:
|
||||||
|
g_ptr_array_unref (res->linkage_data);
|
||||||
|
res->linkage_data = NULL;
|
||||||
|
return FALSE;
|
||||||
|
}
|
||||||
|
|
||||||
/* GST_MTS_DESC_DVB_SHORT_EVENT (0x4D) */
|
/* GST_MTS_DESC_DVB_SHORT_EVENT (0x4D) */
|
||||||
/**
|
/**
|
||||||
* gst_mpegts_descriptor_parse_dvb_short_event:
|
* gst_mpegts_descriptor_parse_dvb_short_event:
|
||||||
|
|
|
||||||
|
|
@ -330,6 +330,102 @@ GstMpegTsDescriptor *gst_mpegts_descriptor_from_dvb_service (GstMpegTsDVBService
|
||||||
const gchar * service_name,
|
const gchar * service_name,
|
||||||
const gchar * service_provider);
|
const gchar * service_provider);
|
||||||
|
|
||||||
|
/* GST_MTS_DESC_DVB_LINKAGE (0x4A) */
|
||||||
|
/**
|
||||||
|
* GstMpegTsDVBLinkageType:
|
||||||
|
*
|
||||||
|
* Linkage Type (EN 300 468 v.1.13.1)
|
||||||
|
*/
|
||||||
|
typedef enum {
|
||||||
|
/* 0x00, 0x0F-0x7F reserved for future use */
|
||||||
|
GST_MPEGTS_DVB_LINKAGE_RESERVED_00 = 0x00,
|
||||||
|
GST_MPEGTS_DVB_LINKAGE_INFORMATION = 0x01,
|
||||||
|
GST_MPEGTS_DVB_LINKAGE_EPG = 0x02,
|
||||||
|
GST_MPEGTS_DVB_LINKAGE_CA_REPLACEMENT = 0x03,
|
||||||
|
GST_MPEGTS_DVB_LINKAGE_TS_CONTAINING_COMPLETE_SI = 0x04,
|
||||||
|
GST_MPEGTS_DVB_LINKAGE_SERVICE_REPLACEMENT = 0x05,
|
||||||
|
GST_MPEGTS_DVB_LINKAGE_DATA_BROADCAST = 0x06,
|
||||||
|
GST_MPEGTS_DVB_LINKAGE_RCS_MAP = 0x07,
|
||||||
|
GST_MPEGTS_DVB_LINKAGE_MOBILE_HAND_OVER = 0x08,
|
||||||
|
GST_MPEGTS_DVB_LINKAGE_SYSTEM_SOFTWARE_UPDATE = 0x09,
|
||||||
|
GST_MPEGTS_DVB_LINKAGE_TS_CONTAINING_SSU = 0x0A,
|
||||||
|
GST_MPEGTS_DVB_LINKAGE_IP_MAC_NOTIFICATION = 0x0B,
|
||||||
|
GST_MPEGTS_DVB_LINKAGE_TS_CONTAINING_INT = 0x0C,
|
||||||
|
GST_MPEGTS_DVB_LINKAGE_EVENT = 0x0D,
|
||||||
|
GST_MPEGTS_DVB_LINKAGE_EXTENDED_EVENT = 0x0E,
|
||||||
|
} GstMpegTsDVBLinkageType;
|
||||||
|
|
||||||
|
typedef enum {
|
||||||
|
GST_MPEGTS_DVB_LINKAGE_HAND_OVER_RESERVED = 0x00,
|
||||||
|
GST_MPEGTS_DVB_LINKAGE_HAND_OVER_IDENTICAL = 0x01,
|
||||||
|
GST_MPEGTS_DVB_LINKAGE_HAND_OVER_LOCAL_VARIATION = 0x02,
|
||||||
|
GST_MPEGTS_DVB_LINKAGE_HAND_OVER_ASSOCIATED = 0x03,
|
||||||
|
} GstMpegTsDVBLinkageHandOverType;
|
||||||
|
|
||||||
|
typedef struct _GstMpegTsDVBLinkageMobileHandOver GstMpegTsDVBLinkageMobileHandOver;
|
||||||
|
typedef struct _GstMpegTsDVBLinkageEvent GstMpegTsDVBLinkageEvent;
|
||||||
|
typedef struct _GstMpegTsDVBLinkageExtendedEvent GstMpegTsDVBLinkageExtendedEvent;
|
||||||
|
typedef struct _GstMpegTsDVBLinkageDescriptor GstMpegTsDVBLinkageDescriptor;
|
||||||
|
|
||||||
|
struct _GstMpegTsDVBLinkageMobileHandOver
|
||||||
|
{
|
||||||
|
GstMpegTsDVBLinkageHandOverType hand_over_type;
|
||||||
|
/* 0 = NIT, 1 = SDT */
|
||||||
|
gboolean origin_type;
|
||||||
|
guint16 network_id;
|
||||||
|
guint16 initial_service_id;
|
||||||
|
};
|
||||||
|
|
||||||
|
struct _GstMpegTsDVBLinkageEvent
|
||||||
|
{
|
||||||
|
guint16 target_event_id;
|
||||||
|
gboolean target_listed;
|
||||||
|
gboolean event_simulcast;
|
||||||
|
};
|
||||||
|
|
||||||
|
struct _GstMpegTsDVBLinkageExtendedEvent
|
||||||
|
{
|
||||||
|
guint16 target_event_id;
|
||||||
|
gboolean target_listed;
|
||||||
|
gboolean event_simulcast;
|
||||||
|
/* FIXME: */
|
||||||
|
guint8 link_type;
|
||||||
|
/* FIXME: */
|
||||||
|
guint8 target_id_type;
|
||||||
|
gboolean original_network_id_flag;
|
||||||
|
gboolean service_id_flag;
|
||||||
|
/* if (target_id_type == 3) */
|
||||||
|
guint16 user_defined_id;
|
||||||
|
/* else */
|
||||||
|
guint16 target_transport_stream_id;
|
||||||
|
guint16 target_original_network_id;
|
||||||
|
guint16 target_service_id;
|
||||||
|
};
|
||||||
|
|
||||||
|
/**
|
||||||
|
* GstMpegTsDVBLinkageDescriptor:
|
||||||
|
* @transport_stream_id: the transport id
|
||||||
|
* @original_network_id: the original network id
|
||||||
|
* @service_id: the service id
|
||||||
|
* @linkage_type: the type which %linkage_data has
|
||||||
|
* @linkage_data: the linkage structure depending from %linkage_type
|
||||||
|
* @private_data_length: the length for %private_data_bytes
|
||||||
|
* @private_data_bytes: additional data bytes
|
||||||
|
*/
|
||||||
|
struct _GstMpegTsDVBLinkageDescriptor
|
||||||
|
{
|
||||||
|
guint16 transport_stream_id;
|
||||||
|
guint16 original_network_id;
|
||||||
|
guint16 service_id;
|
||||||
|
GstMpegTsDVBLinkageType linkage_type;
|
||||||
|
gpointer linkage_data;
|
||||||
|
guint8 private_data_length;
|
||||||
|
guint8 *private_data_bytes;
|
||||||
|
};
|
||||||
|
|
||||||
|
gboolean gst_mpegts_descriptor_parse_dvb_linkage (const GstMpegTsDescriptor * descriptor,
|
||||||
|
GstMpegTsDVBLinkageDescriptor * res);
|
||||||
|
|
||||||
/* GST_MTS_DESC_DVB_SHORT_EVENT (0x4D) */
|
/* GST_MTS_DESC_DVB_SHORT_EVENT (0x4D) */
|
||||||
gboolean gst_mpegts_descriptor_parse_dvb_short_event (const GstMpegTsDescriptor *descriptor,
|
gboolean gst_mpegts_descriptor_parse_dvb_short_event (const GstMpegTsDescriptor *descriptor,
|
||||||
gchar **language_code,
|
gchar **language_code,
|
||||||
|
|
|
||||||
Loading…
Reference in a new issue