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mpegts: Split files and implement free functions

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* In order to avoid future clashing between table_id for the various
  mpeg-ts variants, use different enums.
* In order to keep everything clean(ish) and allow for cleaner growth,
  split into different files (will need the same for descriptors later)
* Also ... implement free functions for all table types :)
This commit is contained in:
Edward Hervey 2013-07-03 17:59:02 +02:00
parent b2335f8d33
commit 982aee25c6
10 changed files with 1258 additions and 1122 deletions
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92
docs/libs/gst-plugins-bad-libs-sections.txt
View file

@ -169,110 +169,126 @@ gst_mpeg4_parse_video_packet_header
<SECTION> <SECTION>
<FILE>gstmpegtsdescriptor</FILE> <FILE>gstmpegtsdescriptor</FILE>
<SUBSECTION Common> <SUBSECTION Common>
GstMpegTSDescriptor GstMpegTsDescriptor
GstMpegTSDescriptorType GstMpegTsDescriptorType
GstMpegTsATSCDescriptorType
GstMpegTsDVBDescriptorType
GstMpegTsISDBDescriptorType
GstMpegTsMiscDescriptorType
gst_mpegts_find_descriptor gst_mpegts_find_descriptor
gst_mpegts_parse_descriptors gst_mpegts_parse_descriptors
<SUBSECTION component> <SUBSECTION component>
GstMpegTSComponentDescriptor GstMpegTsComponentDescriptor
gst_mpegts_descriptor_parse_dvb_component gst_mpegts_descriptor_parse_dvb_component
<SUBSECTION extended_event> <SUBSECTION extended_event>
GstMpegTSExtendedEventItem GstMpegTsExtendedEventItem
GstMpegTSExtendedEventDescriptor GstMpegTsExtendedEventDescriptor
gst_mpegts_descriptor_parse_dvb_extended_event gst_mpegts_descriptor_parse_dvb_extended_event
<SUBSECTION satellite_delivery> <SUBSECTION satellite_delivery>
GstMpegTSSatelliteDeliverySystemDescriptor GstMpegTsSatelliteDeliverySystemDescriptor
GstMpegTSDVBCodeRate GstMpegTsDVBCodeRate
GstMpegTSModulationType GstMpegTsModulationType
GstMpegTSSatellitePolarizationType GstMpegTsSatellitePolarizationType
GstMpegTSSatelliteRolloff GstMpegTsSatelliteRolloff
gst_mpegts_descriptor_parse_satellite_delivery_system gst_mpegts_descriptor_parse_satellite_delivery_system
<SUBSECTION cable_delivery> <SUBSECTION cable_delivery>
GstMpegTSCableDeliverySystemDescriptor GstMpegTsCableDeliverySystemDescriptor
GstMpegTSCableOuterFECScheme GstMpegTsCableOuterFECScheme
gst_mpegts_descriptor_parse_cable_delivery_system gst_mpegts_descriptor_parse_cable_delivery_system
<SUBSECTION short_event> <SUBSECTION short_event>
gst_mpegts_descriptor_parse_dvb_short_event gst_mpegts_descriptor_parse_dvb_short_event
gst_mpegts_descriptor_parse_dvb_network_name gst_mpegts_descriptor_parse_dvb_network_name
<SUBSECTION service> <SUBSECTION service>
GstMpegTSDVBServiceType GstMpegTsDVBServiceType
gst_mpegts_descriptor_parse_dvb_service gst_mpegts_descriptor_parse_dvb_service
<SUBSECTION iso639> <SUBSECTION iso639>
GstMpegTSISO639LanguageDescriptor GstMpegTsISO639LanguageDescriptor
GstMpegTSIso639AudioType GstMpegTsIso639AudioType
gst_mpegts_descriptor_parse_iso_639_language gst_mpegts_descriptor_parse_iso_639_language
gst_mpegts_descriptor_parse_dvb_stream_identifier gst_mpegts_descriptor_parse_dvb_stream_identifier
<SUBSECTION logical_channel> <SUBSECTION logical_channel>
GstMpegTSLogicalChannel GstMpegTsLogicalChannel
GstMpegTSLogicalChannelDescriptor GstMpegTsLogicalChannelDescriptor
gst_mpegts_descriptor_parse_logical_channel gst_mpegts_descriptor_parse_logical_channel
<SUBSECTION Standard> <SUBSECTION Standard>
GST_TYPE_MPEG_TSDVB_CODE_RATE GST_TYPE_MPEG_TS_DVB_CODE_RATE
GST_TYPE_MPEG_TS_CABLE_OUTER_FEC_SCHEME GST_TYPE_MPEG_TS_CABLE_OUTER_FEC_SCHEME
GST_TYPE_MPEG_TS_MODULATION_TYPE GST_TYPE_MPEG_TS_MODULATION_TYPE
GST_TYPE_MPEG_TS_SATELLITE_POLARIZATION_TYPE GST_TYPE_MPEG_TS_SATELLITE_POLARIZATION_TYPE
GST_TYPE_MPEG_TS_SATELLITE_ROLLOFF GST_TYPE_MPEG_TS_SATELLITE_ROLLOFF
GST_TYPE_MPEGTS_DESCRIPTOR GST_TYPE_MPEGTS_DESCRIPTOR
GST_TYPE_MPEG_TSDVB_SERVICE_TYPE GST_TYPE_MPEG_TS_DVB_SERVICE_TYPE
GST_TYPE_MPEG_TS_DESCRIPTOR_TYPE GST_TYPE_MPEG_TS_DESCRIPTOR_TYPE
GST_TYPE_MPEG_TS_ISO639_AUDIO_TYPE GST_TYPE_MPEG_TS_ISO639_AUDIO_TYPE
GST_TYPE_MPEG_TS_RUNNING_STATUS GST_TYPE_MPEG_TS_RUNNING_STATUS
GST_TYPE_MPEG_TS_ATSC_DESCRIPTOR_TYPE
GST_TYPE_MPEG_TS_DVB_DESCRIPTOR_TYPE
GST_TYPE_MPEG_TS_ISDB_DESCRIPTOR_TYPE
GST_TYPE_MPEG_TS_MISC_DESCRIPTOR_TYPE
gst_mpegts_descriptor_get_type gst_mpegts_descriptor_get_type
gst_mpeg_ts_cable_outer_fec_scheme_get_type gst_mpeg_ts_cable_outer_fec_scheme_get_type
gst_mpeg_ts_modulation_type_get_type gst_mpeg_ts_modulation_type_get_type
gst_mpeg_ts_satellite_polarization_type_get_type gst_mpeg_ts_satellite_polarization_type_get_type
gst_mpeg_ts_satellite_rolloff_get_type gst_mpeg_ts_satellite_rolloff_get_type
gst_mpeg_tsdvb_code_rate_get_type gst_mpeg_ts_dvb_code_rate_get_type
gst_mpeg_ts_descriptor_type_get_type gst_mpeg_ts_descriptor_type_get_type
gst_mpeg_ts_atsc_descriptor_type_get_type
gst_mpeg_ts_dvb_descriptor_type_get_type
gst_mpeg_ts_isdb_descriptor_type_get_type
gst_mpeg_ts_misc_descriptor_type_get_type
gst_mpeg_ts_iso639_audio_type_get_type gst_mpeg_ts_iso639_audio_type_get_type
gst_mpeg_ts_running_status_get_type gst_mpeg_ts_running_status_get_type
gst_mpeg_tsdvb_service_type_get_type gst_mpeg_ts_dvb_service_type_get_type
</SECTION> </SECTION>
<SECTION> <SECTION>
<FILE>gstmpegtssection</FILE> <FILE>gstmpegtssection</FILE>
<SUBSECTION section> <SUBSECTION section>
GST_MPEGTS_SECTION_TYPE GST_MPEGTS_SECTION_TYPE
GstMpegTSSection GstMpegTsSection
GstMpegTSSectionTableID GstMpegTsSectionTableID
GstMpegTSSectionType GstMpegTsSectionATSCTableID
GstMpegTsSectionDVBTableID
GstMpegTsSectionType
gst_message_new_mpegts_section gst_message_new_mpegts_section
gst_message_parse_mpegts_section gst_message_parse_mpegts_section
gst_mpegts_section_new gst_mpegts_section_new
gst_mpegts_section_ref gst_mpegts_section_ref
gst_mpegts_section_unref gst_mpegts_section_unref
<SUBSECTION PAT> <SUBSECTION PAT>
GstMpegTSPatProgram GstMpegTsPatProgram
gst_mpegts_section_get_pat gst_mpegts_section_get_pat
<SUBSECTION PMT> <SUBSECTION PMT>
GstMpegTSPMT GstMpegTsPMT
GstMpegTSPMTStream GstMpegTsPMTStream
gst_mpegts_section_get_pmt gst_mpegts_section_get_pmt
<SUBSECTION BAT> <SUBSECTION BAT>
GstMpegTSBAT GstMpegTsBAT
GstMpegTSBATStream GstMpegTsBATStream
<SUBSECTION CAT> <SUBSECTION CAT>
gst_mpegts_section_get_cat gst_mpegts_section_get_cat
<SUBSECTION EIT> <SUBSECTION EIT>
GstMpegTSEIT GstMpegTsEIT
GstMpegTSEITEvent GstMpegTsEITEvent
GstMpegTSRunningStatus GstMpegTsRunningStatus
gst_mpegts_section_get_eit gst_mpegts_section_get_eit
<SUBSECTION NIT> <SUBSECTION NIT>
GstMpegTSNIT GstMpegTsNIT
GstMpegTSNITStream GstMpegTsNITStream
gst_mpegts_section_get_nit gst_mpegts_section_get_nit
<SUBSECTION SDT> <SUBSECTION SDT>
GstMpegTSSDT GstMpegTsSDT
GstMpegTSSDTService GstMpegTsSDTService
gst_mpegts_section_get_sdt gst_mpegts_section_get_sdt
GstMpegTSTOT GstMpegTsTOT
gst_mpegts_section_get_tdt gst_mpegts_section_get_tdt
gst_mpegts_section_get_tot gst_mpegts_section_get_tot
gst_mpegts_section_get_tsdt gst_mpegts_section_get_tsdt
<SUBSECTION Standard> <SUBSECTION Standard>
GST_TYPE_MPEG_TS_SECTION_TABLE_ID GST_TYPE_MPEG_TS_SECTION_TABLE_ID
GST_TYPE_MPEG_TS_SECTION_TYPE GST_TYPE_MPEG_TS_SECTION_TYPE
GST_TYPE_MPEG_TS_SECTION_ATSC_TABLE_ID
GST_TYPE_MPEG_TS_SECTION_DVB_TABLE_ID
GST_MPEGTS_SECTION GST_MPEGTS_SECTION
GST_TYPE_MPEGTS_BAT GST_TYPE_MPEGTS_BAT
GST_TYPE_MPEGTS_EIT GST_TYPE_MPEGTS_EIT
@ -286,6 +302,8 @@ GST_TYPE_MPEGTS_SDT_SERVICE
GST_TYPE_MPEGTS_SECTION GST_TYPE_MPEGTS_SECTION
GST_TYPE_MPEGTS_TOT GST_TYPE_MPEGTS_TOT
gst_mpeg_ts_section_table_id_get_type gst_mpeg_ts_section_table_id_get_type
gst_mpeg_ts_section_atsc_table_id_get_type
gst_mpeg_ts_section_dvb_table_id_get_type
gst_mpeg_ts_section_type_get_type gst_mpeg_ts_section_type_get_type
gst_mpegts_bat_get_type gst_mpegts_bat_get_type
gst_mpegts_eit_event_get_type gst_mpegts_eit_event_get_type

13
gst-libs/gst/mpegts/Makefile.am
View file

@ -2,7 +2,8 @@ lib_LTLIBRARIES = libgstmpegts-@GST_API_VERSION@.la
libgstmpegts_@GST_API_VERSION@_la_SOURCES = \ libgstmpegts_@GST_API_VERSION@_la_SOURCES = \
gstmpegtssection.c \ gstmpegtssection.c \
gstmpegtsdescriptor.c gstmpegtsdescriptor.c \
gst-dvb-section.c
libgstmpegts_@GST_API_VERSION@includedir = \ libgstmpegts_@GST_API_VERSION@includedir = \
$(includedir)/gstreamer-@GST_API_VERSION@/gst/mpegts $(includedir)/gstreamer-@GST_API_VERSION@/gst/mpegts
@ -11,7 +12,10 @@ noinst_HEADERS = gstmpegts-private.h
libgstmpegts_@GST_API_VERSION@include_HEADERS = \ libgstmpegts_@GST_API_VERSION@include_HEADERS = \
gstmpegtssection.h \ gstmpegtssection.h \
gstmpegtsdescriptor.h mpegts.h gst-atsc-section.h \
gst-dvb-section.h \
gstmpegtsdescriptor.h \
mpegts.h
libgstmpegts_@GST_API_VERSION@_la_CFLAGS = \ libgstmpegts_@GST_API_VERSION@_la_CFLAGS = \
@ -28,7 +32,10 @@ libgstmpegts_@GST_API_VERSION@_la_LDFLAGS = \
$(GST_ALL_LDFLAGS) \ $(GST_ALL_LDFLAGS) \
$(GST_LT_LDFLAGS) $(GST_LT_LDFLAGS)
glib_enum_headers=gstmpegtssection.h gstmpegtsdescriptor.h glib_enum_headers=gstmpegtssection.h \
gstmpegtsdescriptor.h \
gst-atsc-section.h \
gst-dvb-section.h
glib_enum_define=GST_MPEGTS glib_enum_define=GST_MPEGTS
glib_gen_prefix=gst_mpegts glib_gen_prefix=gst_mpegts
glib_gen_basename=gstmpegts glib_gen_basename=gstmpegts

67
gst-libs/gst/mpegts/gst-atsc-section.h Normal file
View file

@ -0,0 +1,67 @@
/*
* mpegtspacketizer.h -
* Copyright (C) 2013 Edward Hervey
*
* Authors:
* Edward Hervey <edward@collabora.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef GST_ATSC_SECTION_H
#define GST_ATSC_SECTION_H
#include <gst/gst.h>
#include <gst/mpegts/gstmpegtssection.h>
#include <gst/mpegts/gstmpegtsdescriptor.h>
/**
* GstMpegTsSectionATSCTableID:
*
* Values for a #GstMpegTsSection table_id.
*
* These are the registered ATSC table_id variants.
*
* see also: #GstMpegTsSectionTableID
*/
typedef enum {
/* ATSC (A/65) */
GST_MTS_TABLE_ID_ATSC_MASTER_GUIDE = 0xC7,
GST_MTS_TABLE_ID_ATSC_TERRESTRIAL_VIRTUAL_CHANNEL = 0xC8,
GST_MTS_TABLE_ID_ATSC_CABLE_VIRTUAL_CHANNEL = 0xC9,
GST_MTS_TABLE_ID_ATSC_RATING_REGION = 0xCA,
GST_MTS_TABLE_ID_ATSC_EVENT_INFORMATION = 0xCB,
GST_MTS_TABLE_ID_ATSC_CHANNEL_OR_EVENT_EXTENDED_TEXT = 0xCC,
GST_MTS_TABLE_ID_ATSC_SYSTEM_TIME = 0xCD,
/* ATSC (A/90) */
GST_MTS_TABLE_ID_ATSC_DATA_EVENT = 0xCE,
GST_MTS_TABLE_ID_ATSC_DATA_SERVICE = 0xCF,
/* 0xD0 ?? */
GST_MTS_TABLE_ID_ATSC_NETWORK_RESOURCE = 0xD1,
GST_MTS_TABLE_ID_ATSC_LONG_TERM_SERVICE = 0xD2,
GST_MTS_TABLE_ID_ATSC_DIRECTED_CHANNEL_CHANGE = 0xD3,
GST_MTS_TABLE_ID_ATSC_DIRECTED_CHANNEL_CHANGE_SECTION_CODE = 0xD4,
/* 0xD5 ?? */
GST_MTS_TABLE_ID_ATSC_AGGREGATE_EVENT_INFORMATION = 0xD6,
GST_MTS_TABLE_ID_ATSC_AGGREGATE_EXTENDED_TEXT = 0xD7,
/* 0xD8 ?? */
GST_MTS_TABLE_ID_ATSC_AGGREGATE_DATA_EVENT = 0xD9,
GST_MTS_TABLE_ID_ATSC_SATELLITE_VIRTUAL_CHANNEL = 0xDA,
} GstMpegTsSectionATSCTableID;
#endif /* GST_MPEGTS_SECTION_H */

785
gst-libs/gst/mpegts/gst-dvb-section.c Normal file
View file

@ -0,0 +1,785 @@
/*
* gstmpegtssection.c -
* Copyright (C) 2013 Edward Hervey
* Copyright (C) 2011, Hewlett-Packard Development Company, L.P.
* Copyright (C) 2007 Alessandro Decina
* 2010 Edward Hervey
* Author: Youness Alaoui <youness.alaoui@collabora.co.uk>, Collabora Ltd.
* Author: Sebastian Dröge <sebastian.droege@collabora.co.uk>, Collabora Ltd.
* Author: Edward Hervey <bilboed@bilboed.com>, Collabora Ltd.
*
* Authors:
* Alessandro Decina <alessandro@nnva.org>
* Zaheer Abbas Merali <zaheerabbas at merali dot org>
* Edward Hervey <edward@collabora.com>
*
* This library is free softwagre; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include <string.h>
#include <stdlib.h>
#include "mpegts.h"
#include "gstmpegts-private.h"
/*
* TODO
*
* * Check minimum size for section parsing in the various
* gst_mpegts_section_get_<tabld>() methods
*
* * Implement parsing code for
* * BAT
* * CAT
* * TSDT
*/
static inline GstDateTime *
_parse_utc_time (guint8 * data)
{
guint year, month, day, hour, minute, second;
guint16 mjd;
guint8 *utc_ptr;
mjd = GST_READ_UINT16_BE (data);
if (mjd == G_MAXUINT16)
return NULL;
/* See EN 300 468 Annex C */
year = (guint32) (((mjd - 15078.2) / 365.25));
month = (guint8) ((mjd - 14956.1 - (guint) (year * 365.25)) / 30.6001);
day = mjd - 14956 - (guint) (year * 365.25) - (guint) (month * 30.6001);
if (month == 14 || month == 15) {
year++;
month = month - 1 - 12;
} else {
month--;
}
year += 1900;
utc_ptr = data + 2;
hour = ((utc_ptr[0] & 0xF0) >> 4) * 10 + (utc_ptr[0] & 0x0F);
minute = ((utc_ptr[1] & 0xF0) >> 4) * 10 + (utc_ptr[1] & 0x0F);
second = ((utc_ptr[2] & 0xF0) >> 4) * 10 + (utc_ptr[2] & 0x0F);
/* Time is UTC */
return gst_date_time_new (0.0, year, month, day, hour, minute,
(gdouble) second);
}
/* Event Information Table */
static GstMpegTsEITEvent *
_gst_mpegts_eit_event_copy (GstMpegTsEITEvent * eit)
{
/* FIXME : IMPLEMENT */
return NULL;
}
static void
_gst_mpegts_eit_event_free (GstMpegTsEITEvent * eit)
{
gst_date_time_unref (eit->start_time);
g_array_unref (eit->descriptors);
g_slice_free (GstMpegTsEITEvent, eit);
}
G_DEFINE_BOXED_TYPE (GstMpegTsEITEvent, gst_mpegts_eit_event,
(GBoxedCopyFunc) _gst_mpegts_eit_event_copy,
(GFreeFunc) _gst_mpegts_eit_event_free);
static GstMpegTsEIT *
_gst_mpegts_eit_copy (GstMpegTsEIT * eit)
{
/* FIXME : IMPLEMENT */
return NULL;
}
static void
_gst_mpegts_eit_free (GstMpegTsEIT * eit)
{
g_ptr_array_unref (eit->events);
g_slice_free (GstMpegTsEIT, eit);
}
G_DEFINE_BOXED_TYPE (GstMpegTsEIT, gst_mpegts_eit,
(GBoxedCopyFunc) _gst_mpegts_eit_copy, (GFreeFunc) _gst_mpegts_eit_free);
static GstMpegTsEIT *
_parse_eit (GstMpegTsSection * section)
{
GstMpegTsEIT *eit = NULL;
guint i = 0, allocated_events = 12;
guint8 *data, *end, *duration_ptr;
guint16 descriptors_loop_length;
/* fixed header + CRC == 16 */
if (section->section_length < 18) {
GST_WARNING ("PID %d invalid EIT size %d",
section->pid, section->section_length);
goto error;
}
eit = g_slice_new0 (GstMpegTsEIT);
data = section->data;
end = data + section->section_length;
/* Skip already parsed data */
data += 8;
eit->transport_stream_id = GST_READ_UINT16_BE (data);
data += 2;
eit->original_network_id = GST_READ_UINT16_BE (data);
data += 2;
eit->segment_last_section_number = *data++;
eit->last_table_id = *data++;
eit->actual_stream = (section->table_id == 0x4E ||
(section->table_id >= 0x50 && section->table_id <= 0x5F));
eit->present_following = (section->table_id == 0x4E
|| section->table_id == 0x4F);
eit->events =
g_ptr_array_new_full (allocated_events,
(GDestroyNotify) _gst_mpegts_eit_event_free);
while (data < end - 4) {
GstMpegTsEITEvent *event;
/* 12 is the minimum entry size + CRC */
if (end - data < 12 + 4) {
GST_WARNING ("PID %d invalid EIT entry length %d",
section->pid, (gint) (end - 4 - data));
goto error;
}
event = g_slice_new0 (GstMpegTsEITEvent);
g_ptr_array_add (eit->events, event);
event->event_id = GST_READ_UINT16_BE (data);
data += 2;
event->start_time = _parse_utc_time (data);
duration_ptr = data + 5;
event->duration = (((duration_ptr[0] & 0xF0) >> 4) * 10 +
(duration_ptr[0] & 0x0F)) * 60 * 60 +
(((duration_ptr[1] & 0xF0) >> 4) * 10 +
(duration_ptr[1] & 0x0F)) * 60 +
((duration_ptr[2] & 0xF0) >> 4) * 10 + (duration_ptr[2] & 0x0F);
data += 8;
event->running_status = *data >> 5;
event->free_CA_mode = (*data >> 4) & 0x01;
descriptors_loop_length = GST_READ_UINT16_BE (data) & 0x0FFF;
data += 2;
event->descriptors =
gst_mpegts_parse_descriptors (data, descriptors_loop_length);
if (event->descriptors == NULL)
goto error;
data += descriptors_loop_length;
i += 1;
}
if (data != end - 4) {
GST_WARNING ("PID %d invalid EIT parsed %d length %d",
section->pid, (gint) (data - section->data), section->section_length);
goto error;
}
return eit;
error:
if (eit)
gst_mpegts_section_unref (eit);
return NULL;
}
/**
* gst_mpegts_section_get_eit:
* @section: a #GstMpegTsSection of type %GST_MPEGTS_SECTION_EIT
*
* Returns the #GstMpegTsEIT contained in the @section.
*
* Returns: The #GstMpegTsEIT contained in the section, or %NULL if an error
* happened.
*/
const GstMpegTsEIT *
gst_mpegts_section_get_eit (GstMpegTsSection * section)
{
g_return_val_if_fail (section->section_type == GST_MPEGTS_SECTION_EIT, NULL);
g_return_val_if_fail (section->cached_parsed || section->data, NULL);
if (!section->cached_parsed) {
if (G_UNLIKELY (_calc_crc32 (section->data, section->section_length) != 0))
goto bad_crc;
section->cached_parsed = (gpointer) _parse_eit (section);
section->destroy_parsed = (GDestroyNotify) _gst_mpegts_eit_free;
if (section->cached_parsed == NULL)
goto parse_failure;
}
return (const GstMpegTsEIT *) section->cached_parsed;
bad_crc:
{
GST_WARNING ("Bad CRC on section");
return NULL;
}
parse_failure:
{
GST_WARNING ("Failure to parse section");
return NULL;
}
}
/* Bouquet Association Table */
static GstMpegTsBAT *
_gst_mpegts_bat_copy (GstMpegTsBAT * bat)
{
/* FIXME : IMPLEMENT */
return NULL;
}
static void
_gst_mpegts_bat_free (GstMpegTsBAT * bat)
{
/* FIXME: IMPLEMENT */
}
G_DEFINE_BOXED_TYPE (GstMpegTsBAT, gst_mpegts_bat,
(GBoxedCopyFunc) _gst_mpegts_bat_copy, (GFreeFunc) _gst_mpegts_bat_free);
/* Network Information Table */
static GstMpegTsNITStream *
_gst_mpegts_nit_stream_copy (GstMpegTsNITStream * nit)
{
/* FIXME : IMPLEMENT */
return NULL;
}
static void
_gst_mpegts_nit_stream_free (GstMpegTsNITStream * nit)
{
g_array_unref (nit->descriptors);
g_slice_free (GstMpegTsNITStream, nit);
}
G_DEFINE_BOXED_TYPE (GstMpegTsNITStream, gst_mpegts_nit_stream,
(GBoxedCopyFunc) _gst_mpegts_nit_stream_copy,
(GFreeFunc) _gst_mpegts_nit_stream_free);
static GstMpegTsNIT *
_gst_mpegts_nit_copy (GstMpegTsNIT * nit)
{
/* FIXME : IMPLEMENT */
return NULL;
}
static void
_gst_mpegts_nit_free (GstMpegTsNIT * nit)
{
g_array_unref (nit->descriptors);
g_ptr_array_unref (nit->streams);
g_slice_free (GstMpegTsNIT, nit);
}
G_DEFINE_BOXED_TYPE (GstMpegTsNIT, gst_mpegts_nit,
(GBoxedCopyFunc) _gst_mpegts_nit_copy, (GFreeFunc) _gst_mpegts_nit_free);
static GstMpegTsNIT *
_parse_nit (GstMpegTsSection * section)
{
GstMpegTsNIT *nit = NULL;
guint i = 0, j, allocated_streams = 12;
guint8 *data, *end, *entry_begin;
guint16 descriptors_loop_length, transport_stream_loop_length;
GST_DEBUG ("NIT");
/* fixed header + CRC == 16 */
if (section->section_length < 23) {
GST_WARNING ("PID %d invalid NIT size %d",
section->pid, section->section_length);
goto error;
}
nit = g_slice_new0 (GstMpegTsNIT);
data = section->data;
end = data + section->section_length;
/* Skip already parsed data */
data += 8;
nit->actual_network = section->table_id == 0x40;
descriptors_loop_length = GST_READ_UINT16_BE (data) & 0x0FFF;
data += 2;
/* see if the buffer is large enough */
if (descriptors_loop_length && (data + descriptors_loop_length > end - 4)) {
GST_WARNING ("PID %d invalid NIT descriptors loop length %d",
section->pid, descriptors_loop_length);
goto error;
}
nit->descriptors =
gst_mpegts_parse_descriptors (data, descriptors_loop_length);
if (nit->descriptors == NULL)
goto error;
data += descriptors_loop_length;
transport_stream_loop_length = GST_READ_UINT16_BE (data) & 0x0FFF;
data += 2;
if (G_UNLIKELY (transport_stream_loop_length > (end - 4 - data))) {
GST_WARNING
("PID 0x%04x invalid NIT (transport_stream_loop_length too big)",
section->pid);
goto error;
}
nit->streams =
g_ptr_array_new_full (allocated_streams,
(GDestroyNotify) _gst_mpegts_nit_stream_free);
/* read up to the CRC */
while (transport_stream_loop_length - 4 > 0) {
GstMpegTsNITStream *stream = g_slice_new0 (GstMpegTsNITStream);
g_ptr_array_add (nit->streams, stream);
if (transport_stream_loop_length < 10) {
/* each entry must be at least 6 bytes (+ 4bytes CRC) */
GST_WARNING ("PID %d invalid NIT entry size %d",
section->pid, transport_stream_loop_length);
goto error;
}
entry_begin = data;
stream->transport_stream_id = GST_READ_UINT16_BE (data);
data += 2;
stream->original_network_id = GST_READ_UINT16_BE (data);
data += 2;
descriptors_loop_length = GST_READ_UINT16_BE (data) & 0x0FFF;
data += 2;
GST_DEBUG ("descriptors_loop_length %d", descriptors_loop_length);
if (descriptors_loop_length && (data + descriptors_loop_length > end - 4)) {
GST_WARNING
("PID %d invalid NIT entry %d descriptors loop length %d (only have %"
G_GSIZE_FORMAT ")", section->pid, section->subtable_extension,
descriptors_loop_length, end - 4 - data);
goto error;
}
stream->descriptors =
gst_mpegts_parse_descriptors (data, descriptors_loop_length);
if (stream->descriptors == NULL)
goto error;
data += descriptors_loop_length;
/* At least notify the descriptors we are not handling :( */
for (j = 0; j < stream->descriptors->len; j++) {
GstMpegTsDescriptor *desc =
&g_array_index (stream->descriptors, GstMpegTsDescriptor, j);
switch (desc->descriptor_tag) {
case GST_MTS_DESC_DVB_TERRESTRIAL_DELIVERY_SYSTEM:
case GST_MTS_DESC_DVB_FREQUENCY_LIST:
GST_FIXME ("Not handling previously handled tag 0x%02x",
desc->descriptor_tag);
break;
default:
GST_LOG ("Not handling tag 0x%02x", desc->descriptor_tag);
break;
}
}
i += 1;
transport_stream_loop_length -= data - entry_begin;
}
if (data != end - 4) {
GST_WARNING ("PID %d invalid NIT parsed %d length %d",
section->pid, (gint) (data - section->data), section->section_length);
goto error;
}
return nit;
error:
if (nit)
gst_mpegts_section_unref (nit);
return NULL;
}
/**
* gst_mpegts_section_get_nit:
* @section: a #GstMpegTsSection of type %GST_MPEGTS_SECTION_NIT
*
* Returns the #GstMpegTsNIT contained in the @section.
*
* Returns: The #GstMpegTsNIT contained in the section, or %NULL if an error
* happened.
*/
const GstMpegTsNIT *
gst_mpegts_section_get_nit (GstMpegTsSection * section)
{
g_return_val_if_fail (section->section_type == GST_MPEGTS_SECTION_NIT, NULL);
g_return_val_if_fail (section->cached_parsed || section->data, NULL);
if (!section->cached_parsed) {
if (G_UNLIKELY (_calc_crc32 (section->data, section->section_length) != 0))
goto bad_crc;
section->cached_parsed = (gpointer) _parse_nit (section);
section->destroy_parsed = (GDestroyNotify) _gst_mpegts_nit_free;
if (section->cached_parsed == NULL)
goto parse_failure;
}
return (const GstMpegTsNIT *) section->cached_parsed;
bad_crc:
{
GST_WARNING ("Bad CRC on section");
return NULL;
}
parse_failure:
{
GST_WARNING ("Failure to parse section");
return NULL;
}
}
/* Service Description Table (SDT) */
static GstMpegTsSDTService *
_gst_mpegts_sdt_service_copy (GstMpegTsSDTService * sdt)
{
/* FIXME : IMPLEMENT */
return NULL;
}
static void
_gst_mpegts_sdt_service_free (GstMpegTsSDTService * sdt)
{
g_array_unref (sdt->descriptors);
g_slice_free (GstMpegTsSDTService, sdt);
}
G_DEFINE_BOXED_TYPE (GstMpegTsSDTService, gst_mpegts_sdt_service,
(GBoxedCopyFunc) _gst_mpegts_sdt_service_copy,
(GFreeFunc) _gst_mpegts_sdt_service_free);
static GstMpegTsSDT *
_gst_mpegts_sdt_copy (GstMpegTsSDT * sdt)
{
/* FIXME : IMPLEMENT */
return NULL;
}
static void
_gst_mpegts_sdt_free (GstMpegTsSDT * sdt)
{
g_ptr_array_unref (sdt->services);
g_slice_free (GstMpegTsSDT, sdt);
}
G_DEFINE_BOXED_TYPE (GstMpegTsSDT, gst_mpegts_sdt,
(GBoxedCopyFunc) _gst_mpegts_sdt_copy, (GFreeFunc) _gst_mpegts_sdt_free);
static GstMpegTsSDT *
_parse_sdt (GstMpegTsSection * section)
{
GstMpegTsSDT *sdt = NULL;
guint i = 0, allocated_services = 8;
guint8 *data, *end, *entry_begin;
guint tmp;
guint sdt_info_length;
guint descriptors_loop_length;
GST_DEBUG ("SDT");
/* fixed header + CRC == 16 */
if (section->section_length < 14) {
GST_WARNING ("PID %d invalid SDT size %d",
section->pid, section->section_length);
goto error;
}
sdt = g_slice_new0 (GstMpegTsSDT);
data = section->data;
end = data + section->section_length;
/* Skip common fields */
data += 8;
sdt->original_network_id = GST_READ_UINT16_BE (data);
data += 2;
/* skip reserved byte */
data += 1;
sdt->actual_ts = section->table_id == 0x42;
sdt_info_length = section->section_length - 11;
sdt->services = g_ptr_array_new_full (allocated_services,
(GDestroyNotify) _gst_mpegts_sdt_service_free);
/* read up to the CRC */
while (sdt_info_length - 4 > 0) {
GstMpegTsSDTService *service = g_slice_new0 (GstMpegTsSDTService);
g_ptr_array_add (sdt->services, service);
entry_begin = data;
if (sdt_info_length < 9) {
/* each entry must be at least 5 bytes (+4 bytes for the CRC) */
GST_WARNING ("PID %d invalid SDT entry size %d",
section->pid, sdt_info_length);
goto error;
}
service->service_id = GST_READ_UINT16_BE (data);
data += 2;
service->EIT_schedule_flag = ((*data & 0x02) == 2);
service->EIT_present_following_flag = (*data & 0x01) == 1;
data += 1;
tmp = GST_READ_UINT16_BE (data);
service->running_status = (*data >> 5) & 0x07;
service->free_CA_mode = (*data >> 4) & 0x01;
descriptors_loop_length = tmp & 0x0FFF;
data += 2;
if (descriptors_loop_length && (data + descriptors_loop_length > end - 4)) {
GST_WARNING ("PID %d invalid SDT entry %d descriptors loop length %d",
section->pid, service->service_id, descriptors_loop_length);
goto error;
}
service->descriptors =
gst_mpegts_parse_descriptors (data, descriptors_loop_length);
if (!service->descriptors)
goto error;
data += descriptors_loop_length;
sdt_info_length -= data - entry_begin;
i += 1;
}
if (data != end - 4) {
GST_WARNING ("PID %d invalid SDT parsed %d length %d",
section->pid, (gint) (data - section->data), section->section_length);
goto error;
}
return sdt;
error:
if (sdt)
_gst_mpegts_sdt_free (sdt);
return NULL;
}
/**
* gst_mpegts_section_get_sdt:
* @section: a #GstMpegTsSection of type %GST_MPEGTS_SECTION_SDT
*
* Returns the #GstMpegTsSDT contained in the @section.
*
* Returns: The #GstMpegTsSDT contained in the section, or %NULL if an error
* happened.
*/
const GstMpegTsSDT *
gst_mpegts_section_get_sdt (GstMpegTsSection * section)
{
g_return_val_if_fail (section->section_type == GST_MPEGTS_SECTION_SDT, NULL);
g_return_val_if_fail (section->cached_parsed || section->data, NULL);
if (!section->cached_parsed) {
if (G_UNLIKELY (_calc_crc32 (section->data, section->section_length) != 0))
goto bad_crc;
section->cached_parsed = (gpointer) _parse_sdt (section);
section->destroy_parsed = (GDestroyNotify) _gst_mpegts_sdt_free;
if (section->cached_parsed == NULL)
goto parse_failure;
}
return (const GstMpegTsSDT *) section->cached_parsed;
bad_crc:
{
GST_WARNING ("Bad CRC on section");
return NULL;
}
parse_failure:
{
GST_WARNING ("Failure to parse section");
return NULL;
}
}
/* Time and Date Table (TDT) */
static GstDateTime *
_parse_tdt (GstMpegTsSection * section)
{
/* FIXME : Add length check */
return _parse_utc_time (section->data + 3);
}
/**
* gst_mpegts_section_get_tdt:
* @section: a #GstMpegTsSection of type %GST_MPEGTS_SECTION_TDT
*
* Returns the #GstDateTime of the TDT
*
* Returns: The #GstDateTime contained in the section, or %NULL
* if an error happened. Release with #gst_date_time_unref when done.
*/
GstDateTime *
gst_mpegts_section_get_tdt (GstMpegTsSection * section)
{
g_return_val_if_fail (section->section_type == GST_MPEGTS_SECTION_TDT, NULL);
g_return_val_if_fail (section->cached_parsed || section->data, NULL);
if (!section->cached_parsed) {
section->cached_parsed = (gpointer) _parse_tdt (section);
section->destroy_parsed = (GDestroyNotify) gst_date_time_unref;
if (section->cached_parsed == NULL)
goto parse_failure;
}
return gst_date_time_ref ((GstDateTime *) section->cached_parsed);
parse_failure:
{
GST_WARNING ("Failure to parse section");
return NULL;
}
}
/* Time Offset Table (TOT) */
static GstMpegTsTOT *
_gst_mpegts_tot_copy (GstMpegTsTOT * tot)
{
/* FIXME : IMPLEMENT */
return NULL;
}
static void
_gst_mpegts_tot_free (GstMpegTsTOT * tot)
{
gst_date_time_unref (tot->utc_time);
g_array_unref (tot->descriptors);
g_slice_free (GstMpegTsTOT, tot);
}
G_DEFINE_BOXED_TYPE (GstMpegTsTOT, gst_mpegts_tot,
(GBoxedCopyFunc) _gst_mpegts_tot_copy, (GFreeFunc) _gst_mpegts_tot_free);
static GstMpegTsTOT *
_parse_tot (GstMpegTsSection * section)
{
guint8 *data;
GstMpegTsTOT *tot;
guint16 desc_len;
/* FIXME : Check minimum length */
GST_DEBUG ("TOT");
tot = g_slice_new0 (GstMpegTsTOT);
tot->utc_time = _parse_utc_time (section->data + 3);
/* Skip 5 bytes from utc_time (+3 of initial offset) */
data = section->data + 8;
desc_len = GST_READ_UINT16_BE (data) & 0xFFF;
tot->descriptors = gst_mpegts_parse_descriptors (data, desc_len);
return tot;
}
/**
* gst_mpegts_section_get_tot:
* @section: a #GstMpegTsSection of type %GST_MPEGTS_SECTION_TOT
*
* Returns the #GstMpegTsTOT contained in the @section.
*
* Returns: The #GstMpegTsTOT contained in the section, or %NULL if an error
* happened.
*/
const GstMpegTsTOT *
gst_mpegts_section_get_tot (GstMpegTsSection * section)
{
g_return_val_if_fail (section->section_type == GST_MPEGTS_SECTION_TOT, NULL);
g_return_val_if_fail (section->cached_parsed || section->data, NULL);
if (!section->cached_parsed) {
if (G_UNLIKELY (_calc_crc32 (section->data, section->section_length) != 0))
goto bad_crc;
section->cached_parsed = (gpointer) _parse_tot (section);
section->destroy_parsed = (GDestroyNotify) _gst_mpegts_tot_free;
if (section->cached_parsed == NULL)
goto parse_failure;
}
return (const GstMpegTsTOT *) section->cached_parsed;
bad_crc:
{
GST_WARNING ("Bad CRC on section");
return NULL;
}
parse_failure:
{
GST_WARNING ("Failure to parse section");
return NULL;
}
}

307
gst-libs/gst/mpegts/gst-dvb-section.h Normal file
View file

@ -0,0 +1,307 @@
/*
* mpegtspacketizer.h -
* Copyright (C) 2013 Edward Hervey
*
* Authors:
* Edward Hervey <edward@collabora.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef GST_DVB_SECTION_H
#define GST_DVB_SECTION_H
#include <gst/gst.h>
#include <gst/mpegts/gstmpegtssection.h>
#include <gst/mpegts/gstmpegtsdescriptor.h>
/**
* GstMpegTsSectionDVBTableID:
*
* Values for a #GstMpegTsSection table_id.
*
* These are the registered DVB table_id variants.
*
* see also: #GstMpegTsSectionTableID
*/
typedef enum {
/* EN 300 468 (DVB) v 1.12.1 */
GST_MTS_TABLE_ID_NETWORK_INFORMATION_ACTUAL_NETWORK = 0x40,
GST_MTS_TABLE_ID_NETWORK_INFORMATION_OTHER_NETWORK = 0x41,
GST_MTS_TABLE_ID_SERVICE_DESCRIPTION_ACTUAL_TS = 0x42,
GST_MTS_TABLE_ID_SERVICE_DESCRIPTION_OTHER_TS = 0x46,
GST_MTS_TABLE_ID_BOUQUET_ASSOCIATION = 0x4A,
GST_MTS_TABLE_ID_EVENT_INFORMATION_ACTUAL_TS_PRESENT = 0x4E,
GST_MTS_TABLE_ID_EVENT_INFORMATION_OTHER_TS_PRESENT = 0x4F,
GST_MTS_TABLE_ID_EVENT_INFORMATION_ACTUAL_TS_SCHEDULE_1 = 0x50,
GST_MTS_TABLE_ID_EVENT_INFORMATION_ACTUAL_TS_SCHEDULE_N = 0x5F,
GST_MTS_TABLE_ID_EVENT_INFORMATION_OTHER_TS_SCHEDULE_1 = 0x60,
GST_MTS_TABLE_ID_EVENT_INFORMATION_OTHER_TS_SCHEDULE_N = 0x6F,
GST_MTS_TABLE_ID_TIME_DATE = 0x70,
GST_MTS_TABLE_ID_RUNNING_STATUS = 0x71,
GST_MTS_TABLE_ID_STUFFING = 0x72,
GST_MTS_TABLE_ID_TIME_OFFSET = 0x73,
/* TS 102 812 (MHP v1.1.3) */
GST_MTS_TABLE_ID_APPLICATION_INFORMATION_TABLE = 0x74,
/* TS 102 323 (DVB TV Anytime v1.5.1) */
GST_MTS_TABLE_ID_CONTAINER = 0x75,
GST_MTS_TABLE_ID_RELATED_CONTENT = 0x76,
GST_MTS_TABLE_ID_CONTENT_IDENTIFIER = 0x77,
/* EN 301 192 (DVB specification for data broadcasting) */
GST_MTS_TABLE_ID_MPE_FEC = 0x78,
/* TS 102 323 (DVB TV Anytime v1.5.1) */
GST_MTS_TABLE_ID_RESOLUTION_NOTIFICATION = 0x79,
/* TS 102 772 (DVB-SH Multi-Protocol Encapsulation) */
GST_MTS_TABLE_ID_MPE_IFEC = 0x7A,
/* EN 300 468 (DVB) v 1.12.1 */
GST_MTS_TABLE_ID_DISCONTINUITY_INFORMATION = 0x7E,
GST_MTS_TABLE_ID_SELECTION_INFORMATION = 0x7F,
/* ETR 289 (DVB Support for use of scrambling and CA) */
GST_MTS_TABLE_ID_CA_MESSAGE_ECM_0 = 0x80,
GST_MTS_TABLE_ID_CA_MESSAGE_ECM_1 = 0x81,
GST_MTS_TABLE_ID_CA_MESSAGE_SYSTEM_PRIVATE_1 = 0x82,
GST_MTS_TABLE_ID_CA_MESSAGE_SYSTEM_PRIVATE_N = 0x8F,
/* ... */
/* EN 301 790 (DVB interaction channel for satellite distribution channels) */
GST_MTS_TABLE_ID_SCT = 0xA0,
GST_MTS_TABLE_ID_FCT = 0xA1,
GST_MTS_TABLE_ID_TCT = 0xA2,
GST_MTS_TABLE_ID_SPT = 0xA3,
GST_MTS_TABLE_ID_CMT = 0xA4,
GST_MTS_TABLE_ID_TBTP = 0xA5,
GST_MTS_TABLE_ID_PCR_PACKET_PAYLOAD = 0xA6,
GST_MTS_TABLE_ID_TRANSMISSION_MODE_SUPPORT_PAYLOAD = 0xAA,
GST_MTS_TABLE_ID_TIM = 0xB0,
GST_MTS_TABLE_ID_LL_FEC_PARITY_DATA_TABLE = 0xB1
} GstMpegTsSectionDVBTableID;
/**
* GstMpegTsRunningStatus:
*
* Running status of a service.
*
* Corresponds to table 6 of ETSI EN 300 468 (v1.13.0)
*/
typedef enum
{
GST_MPEGTS_RUNNING_STATUS_UNDEFINED = 0,
GST_MPEGTS_RUNNING_STATUS_NOT_RUNNING,
GST_MPEGTS_RUNNING_STATUS_STARTS_IN_FEW_SECONDS,
GST_MPEGTS_RUNNING_STATUS_PAUSING,
GST_MPEGTS_RUNNING_STATUS_RUNNING,
GST_MPEGTS_RUNNING_STATUS_OFF_AIR
} GstMpegTsRunningStatus;
/* NIT */
typedef struct _GstMpegTsNITStream GstMpegTsNITStream;
typedef struct _GstMpegTsNIT GstMpegTsNIT;
#define GST_TYPE_MPEGTS_NIT (gst_mpegts_nit_get_type())
#define GST_TYPE_MPEGTS_NIT_STREAM (gst_mpegts_nit_stream_get_type())
/**
* GstMpegTsNITStream:
* @transport_stream_id:
* @original_network_id:
* @descriptors: (element-type GstMpegTsDescriptor)
*
*/
struct _GstMpegTsNITStream
{
guint16 transport_stream_id;
guint16 original_network_id;
GArray *descriptors;
};
/**
* GstMpegTsNIT:
* @actual_network: Whether this NIT corresponds to the actual stream
* @descriptors: (element-type GstMpegTsDescriptor) the global descriptors
* @streams: (element-type GstMpegTsNITStream) the streams
*
* Network Information Table (ISO/IEC 13818-1 / EN 300 468)
*
* The network_id is contained in the subtable_extension field of the
* container #GstMpegTsSection.
*/
struct _GstMpegTsNIT
{
gboolean actual_network;
GArray *descriptors;
GPtrArray *streams;
};
GType gst_mpegts_nit_get_type (void);
GType gst_mpegts_nit_stream_get_type (void);
const GstMpegTsNIT *gst_mpegts_section_get_nit (GstMpegTsSection *section);
/* BAT */
typedef struct _GstMpegTsBATStream GstMpegTsBATStream;
typedef struct _GstMpegTsBAT GstMpegTsBAT;
#define GST_TYPE_MPEGTS_BAT (gst_mpegts_bat_get_type())
struct _GstMpegTsBATStream
{
guint16 transport_stream_id;
guint16 original_network_id;
GArray *descriptors;
};
/**
* GstMpegTsBAT:
*
* DVB Bouquet Association Table (EN 300 468)
*/
struct _GstMpegTsBAT
{
gboolean actual_network;
GArray *descriptors;
GPtrArray *streams;
};
GType gst_mpegts_bat_get_type (void);
/* SDT */
#define GST_TYPE_MPEGTS_SDT (gst_mpegts_sdt_get_type())
#define GST_TYPE_MPEGTS_SDT_SERVICE (gst_mpegts_sdt_service_get_type())
typedef struct _GstMpegTsSDTService GstMpegTsSDTService;
typedef struct _GstMpegTsSDT GstMpegTsSDT;
struct _GstMpegTsSDTService
{
guint16 service_id;
gboolean EIT_schedule_flag;
gboolean EIT_present_following_flag;
GstMpegTsRunningStatus running_status;
gboolean free_CA_mode;
GArray *descriptors;
};
/**
* GstMpegTsSDT:
*
* Service Description Table (EN 300 468)
*/
struct _GstMpegTsSDT
{
guint16 original_network_id;
gboolean actual_ts;
GPtrArray *services;
};
GType gst_mpegts_sdt_get_type (void);
GType gst_mpegts_sdt_service_get_type (void);
const GstMpegTsSDT *gst_mpegts_section_get_sdt (GstMpegTsSection *section);
/* EIT */
#define GST_TYPE_MPEGTS_EIT (gst_mpegts_eit_get_type())
#define GST_TYPE_MPEGTS_EIT_EVENT (gst_mpegts_eit_event_get_type())
typedef struct _GstMpegTsEITEvent GstMpegTsEITEvent;
typedef struct _GstMpegTsEIT GstMpegTsEIT;
/**
* GstMpegTsEITEvent:
*
* Event from a @GstMpegTsEIT
*/
struct _GstMpegTsEITEvent
{
guint16 event_id;
GstDateTime *start_time;
guint32 duration;
GstMpegTsRunningStatus running_status;
gboolean free_CA_mode;
GArray *descriptors;
};
/**
* GstMpegTsEIT:
*
* Event Information Table (EN 300 468)
*/
struct _GstMpegTsEIT
{
guint16 transport_stream_id;
guint16 original_network_id;
guint8 segment_last_section_number;
guint8 last_table_id;
gboolean actual_stream;
gboolean present_following;
GPtrArray *events;
};
GType gst_mpegts_eit_get_type (void);
GType gst_mpegts_eit_event_get_type (void);
const GstMpegTsEIT *gst_mpegts_section_get_eit (GstMpegTsSection *section);
/* TDT */
GstDateTime *gst_mpegts_section_get_tdt (GstMpegTsSection *section);
/* TOT */
typedef struct _GstMpegTsTOT GstMpegTsTOT;
#define GST_TYPE_MPEGTS_TOT (gst_mpegts_tot_get_type())
/**
* GstMpegTsTOT:
*
* Time Offset Table (EN 300 468)
*/
struct _GstMpegTsTOT
{
GstDateTime *utc_time;
GArray *descriptors;
};
GType gst_mpegts_tot_get_type (void);
const GstMpegTsTOT *gst_mpegts_section_get_tot (GstMpegTsSection *section);
#endif /* GST_MPEGTS_SECTION_H */

3
gst-libs/gst/mpegts/gstmpegts-private.h
View file

@ -27,6 +27,7 @@
GST_DEBUG_CATEGORY_EXTERN (gst_mpegts_debug); GST_DEBUG_CATEGORY_EXTERN (gst_mpegts_debug);
#define GST_CAT_DEFAULT gst_mpegts_debug #define GST_CAT_DEFAULT gst_mpegts_debug
void __initialize_descriptors (void); G_GNUC_INTERNAL void __initialize_descriptors (void);
G_GNUC_INTERNAL guint32 _calc_crc32 (const guint8 *data, guint datalen);
#endif /* _GST_MPEGTS_PRIVATE_H_ */ #endif /* _GST_MPEGTS_PRIVATE_H_ */

10
gst-libs/gst/mpegts/gstmpegtsdescriptor.c
View file

@ -810,10 +810,10 @@ gst_mpegts_descriptor_parse_dvb_service (const GstMpegTsDescriptor *
if (service_type) if (service_type)
*service_type = *data; *service_type = *data;
data += 1; data += 1;
if (*provider_name) if (provider_name)
*provider_name = get_encoding_and_convert ((const gchar *) data + 1, *data); *provider_name = get_encoding_and_convert ((const gchar *) data + 1, *data);
data += *data + 1; data += *data + 1;
if (*service_name) if (service_name)
*service_name = get_encoding_and_convert ((const gchar *) data + 1, *data); *service_name = get_encoding_and_convert ((const gchar *) data + 1, *data);
return TRUE; return TRUE;
@ -843,15 +843,15 @@ gst_mpegts_descriptor_parse_dvb_short_event (const GstMpegTsDescriptor *
data = (guint8 *) descriptor->descriptor_data + 2; data = (guint8 *) descriptor->descriptor_data + 2;
if (*language_code) { if (language_code) {
*language_code = g_malloc0 (4); *language_code = g_malloc0 (4);
memcpy (*language_code, data, 3); memcpy (*language_code, data, 3);
} }
data += 3; data += 3;
if (*event_name) if (event_name)
*event_name = get_encoding_and_convert ((const gchar *) data + 1, *data); *event_name = get_encoding_and_convert ((const gchar *) data + 1, *data);
data += *data + 1; data += *data + 1;
if (*text) if (text)
*text = get_encoding_and_convert ((const gchar *) data + 1, *data); *text = get_encoding_and_convert ((const gchar *) data + 1, *data);
return TRUE; return TRUE;
} }

787
gst-libs/gst/mpegts/gstmpegtssection.c
View file

@ -119,7 +119,7 @@ static const guint32 crc_tab[256] = {
}; };
/* _calc_crc32 relicenced to LGPL from fluendo ts demuxer */ /* _calc_crc32 relicenced to LGPL from fluendo ts demuxer */
static guint32 guint32
_calc_crc32 (const guint8 * data, guint datalen) _calc_crc32 (const guint8 * data, guint datalen)
{ {
gint i; gint i;
@ -132,40 +132,6 @@ _calc_crc32 (const guint8 * data, guint datalen)
} }
static inline GstDateTime *
_parse_utc_time (guint8 * data)
{
guint year, month, day, hour, minute, second;
guint16 mjd;
guint8 *utc_ptr;
mjd = GST_READ_UINT16_BE (data);
if (mjd == G_MAXUINT16)
return NULL;
/* See EN 300 468 Annex C */
year = (guint32) (((mjd - 15078.2) / 365.25));
month = (guint8) ((mjd - 14956.1 - (guint) (year * 365.25)) / 30.6001);
day = mjd - 14956 - (guint) (year * 365.25) - (guint) (month * 30.6001);
if (month == 14 || month == 15) {
year++;
month = month - 1 - 12;
} else {
month--;
}
year += 1900;
utc_ptr = data + 2;
hour = ((utc_ptr[0] & 0xF0) >> 4) * 10 + (utc_ptr[0] & 0x0F);
minute = ((utc_ptr[1] & 0xF0) >> 4) * 10 + (utc_ptr[1] & 0x0F);
second = ((utc_ptr[2] & 0xF0) >> 4) * 10 + (utc_ptr[2] & 0x0F);
/* Time is UTC */
return gst_date_time_new (0.0, year, month, day, hour, minute,
(gdouble) second);
}
/* /*
* GENERIC MPEG-TS SECTION * GENERIC MPEG-TS SECTION
@ -175,58 +141,12 @@ _gst_mpegts_section_free (GstMpegTsSection * section)
{ {
GST_DEBUG ("Freeing section type %d", section->section_type); GST_DEBUG ("Freeing section type %d", section->section_type);
/* FIXME : Implement */ if (section->cached_parsed && section->destroy_parsed)
if (section->cached_parsed) { section->destroy_parsed (section->cached_parsed);
switch (section->section_type) {
case GST_MPEGTS_SECTION_PAT:
g_array_unref ((GArray *) section->cached_parsed);
break;
case GST_MPEGTS_SECTION_PMT:
{
GstMpegTsPMT *pmt = (GstMpegTsPMT *) section->cached_parsed;
g_array_unref (pmt->descriptors);
g_ptr_array_unref (pmt->streams);
break;
}
case GST_MPEGTS_SECTION_TOT:
{
GstMpegTsTOT *tot = (GstMpegTsTOT *) section->cached_parsed;
gst_date_time_unref (tot->utc_time);
g_array_unref (tot->descriptors);
break;
}
case GST_MPEGTS_SECTION_TDT:
gst_date_time_unref ((GstDateTime *) section->cached_parsed);
break;
case GST_MPEGTS_SECTION_CAT:
g_array_unref ((GArray *) section->cached_parsed);
break;
case GST_MPEGTS_SECTION_NIT:
{
GstMpegTsNIT *nit = (GstMpegTsNIT *) section->cached_parsed;
g_array_unref (nit->descriptors);
g_ptr_array_unref (nit->streams);
break;
}
case GST_MPEGTS_SECTION_EIT:
{
GstMpegTsEIT *eit = (GstMpegTsEIT *) section->cached_parsed;
g_ptr_array_unref (eit->events);
break;
}
case GST_MPEGTS_SECTION_SDT:
{
GstMpegTsSDT *sdt = (GstMpegTsSDT *) section->cached_parsed;
g_ptr_array_unref (sdt->services);
break;
}
default:
break;
}
}
if (section->data) if (section->data)
g_free (section->data); g_free (section->data);
g_slice_free (GstMpegTsSection, section); g_slice_free (GstMpegTsSection, section);
} }
@ -417,6 +337,7 @@ gst_mpegts_section_get_pat (GstMpegTsSection * section)
goto bad_crc; goto bad_crc;
section->cached_parsed = (gpointer) _parse_pat (section); section->cached_parsed = (gpointer) _parse_pat (section);
section->destroy_parsed = (GDestroyNotify) g_array_unref;
if (section->cached_parsed == NULL) if (section->cached_parsed == NULL)
goto parse_failure; goto parse_failure;
} }
@ -467,7 +388,9 @@ _gst_mpegts_pmt_copy (GstMpegTsPMT * pmt)
static void static void
_gst_mpegts_pmt_free (GstMpegTsPMT * pmt) _gst_mpegts_pmt_free (GstMpegTsPMT * pmt)
{ {
/* FIXME: IMPLEMENT */ g_array_unref (pmt->descriptors);
g_ptr_array_unref (pmt->streams);
g_slice_free (GstMpegTsPMT, pmt);
} }
G_DEFINE_BOXED_TYPE (GstMpegTsPMT, gst_mpegts_pmt, G_DEFINE_BOXED_TYPE (GstMpegTsPMT, gst_mpegts_pmt,
@ -584,6 +507,7 @@ gst_mpegts_section_get_pmt (GstMpegTsSection * section)
goto bad_crc; goto bad_crc;
section->cached_parsed = (gpointer) _parse_pmt (section); section->cached_parsed = (gpointer) _parse_pmt (section);
section->destroy_parsed = (GDestroyNotify) _gst_mpegts_pmt_free;
if (section->cached_parsed == NULL) if (section->cached_parsed == NULL)
goto parse_failure; goto parse_failure;
} }
@ -638,6 +562,7 @@ gst_mpegts_section_get_cat (GstMpegTsSection * section)
if (!section->cached_parsed) { if (!section->cached_parsed) {
section->cached_parsed = (gpointer) _parse_cat (section); section->cached_parsed = (gpointer) _parse_cat (section);
section->destroy_parsed = (GDestroyNotify) g_array_unref;
if (section->cached_parsed == NULL) if (section->cached_parsed == NULL)
goto parse_failure; goto parse_failure;
} }
@ -676,694 +601,6 @@ gst_mpegts_section_get_tsdt (GstMpegTsSection * section)
} }
/* Event Information Table */
static GstMpegTsEIT *
_gst_mpegts_eit_copy (GstMpegTsEIT * eit)
{
/* FIXME : IMPLEMENT */
return NULL;
}
static void
_gst_mpegts_eit_free (GstMpegTsEIT * eit)
{
/* FIXME: IMPLEMENT */
}
G_DEFINE_BOXED_TYPE (GstMpegTsEIT, gst_mpegts_eit,
(GBoxedCopyFunc) _gst_mpegts_eit_copy, (GFreeFunc) _gst_mpegts_eit_free);
static GstMpegTsEITEvent *
_gst_mpegts_eit_event_copy (GstMpegTsEITEvent * eit)
{
/* FIXME : IMPLEMENT */
return NULL;
}
static void
_gst_mpegts_eit_event_free (GstMpegTsEITEvent * eit)
{
/* FIXME: IMPLEMENT */
}
G_DEFINE_BOXED_TYPE (GstMpegTsEITEvent, gst_mpegts_eit_event,
(GBoxedCopyFunc) _gst_mpegts_eit_event_copy,
(GFreeFunc) _gst_mpegts_eit_event_free);
static GstMpegTsEIT *
_parse_eit (GstMpegTsSection * section)
{
GstMpegTsEIT *eit = NULL;
guint i = 0, allocated_events = 12;
guint8 *data, *end, *duration_ptr;
guint16 descriptors_loop_length;
/* fixed header + CRC == 16 */
if (section->section_length < 18) {
GST_WARNING ("PID %d invalid EIT size %d",
section->pid, section->section_length);
goto error;
}
eit = g_slice_new0 (GstMpegTsEIT);
data = section->data;
end = data + section->section_length;
/* Skip already parsed data */
data += 8;
eit->transport_stream_id = GST_READ_UINT16_BE (data);
data += 2;
eit->original_network_id = GST_READ_UINT16_BE (data);
data += 2;
eit->segment_last_section_number = *data++;
eit->last_table_id = *data++;
eit->actual_stream = (section->table_id == 0x4E ||
(section->table_id >= 0x50 && section->table_id <= 0x5F));
eit->present_following = (section->table_id == 0x4E
|| section->table_id == 0x4F);
eit->events =
g_ptr_array_new_full (allocated_events,
(GDestroyNotify) _gst_mpegts_eit_event_free);
while (data < end - 4) {
GstMpegTsEITEvent *event;
/* 12 is the minimum entry size + CRC */
if (end - data < 12 + 4) {
GST_WARNING ("PID %d invalid EIT entry length %d",
section->pid, (gint) (end - 4 - data));
goto error;
}
event = g_slice_new0 (GstMpegTsEITEvent);
g_ptr_array_add (eit->events, event);
event->event_id = GST_READ_UINT16_BE (data);
data += 2;
event->start_time = _parse_utc_time (data);
duration_ptr = data + 5;
event->duration = (((duration_ptr[0] & 0xF0) >> 4) * 10 +
(duration_ptr[0] & 0x0F)) * 60 * 60 +
(((duration_ptr[1] & 0xF0) >> 4) * 10 +
(duration_ptr[1] & 0x0F)) * 60 +
((duration_ptr[2] & 0xF0) >> 4) * 10 + (duration_ptr[2] & 0x0F);
data += 8;
event->running_status = *data >> 5;
event->free_CA_mode = (*data >> 4) & 0x01;
descriptors_loop_length = GST_READ_UINT16_BE (data) & 0x0FFF;
data += 2;
event->descriptors =
gst_mpegts_parse_descriptors (data, descriptors_loop_length);
if (event->descriptors == NULL)
goto error;
data += descriptors_loop_length;
i += 1;
}
if (data != end - 4) {
GST_WARNING ("PID %d invalid EIT parsed %d length %d",
section->pid, (gint) (data - section->data), section->section_length);
goto error;
}
return eit;
error:
if (eit)
gst_mpegts_section_unref (eit);
return NULL;
}
/**
* gst_mpegts_section_get_eit:
* @section: a #GstMpegTsSection of type %GST_MPEGTS_SECTION_EIT
*
* Returns the #GstMpegTsEIT contained in the @section.
*
* Returns: The #GstMpegTsEIT contained in the section, or %NULL if an error
* happened.
*/
const GstMpegTsEIT *
gst_mpegts_section_get_eit (GstMpegTsSection * section)
{
g_return_val_if_fail (section->section_type == GST_MPEGTS_SECTION_EIT, NULL);
g_return_val_if_fail (section->cached_parsed || section->data, NULL);
if (!section->cached_parsed) {
if (G_UNLIKELY (_calc_crc32 (section->data, section->section_length) != 0))
goto bad_crc;
section->cached_parsed = (gpointer) _parse_eit (section);
if (section->cached_parsed == NULL)
goto parse_failure;
}
return (const GstMpegTsEIT *) section->cached_parsed;
bad_crc:
{
GST_WARNING ("Bad CRC on section");
return NULL;
}
parse_failure:
{
GST_WARNING ("Failure to parse section");
return NULL;
}
}
/* Bouquet Association Table */
static GstMpegTsBAT *
_gst_mpegts_bat_copy (GstMpegTsBAT * bat)
{
/* FIXME : IMPLEMENT */
return NULL;
}
static void
_gst_mpegts_bat_free (GstMpegTsBAT * bat)
{
/* FIXME: IMPLEMENT */
}
G_DEFINE_BOXED_TYPE (GstMpegTsBAT, gst_mpegts_bat,
(GBoxedCopyFunc) _gst_mpegts_bat_copy, (GFreeFunc) _gst_mpegts_bat_free);
/* Network Information Table */
static GstMpegTsNIT *
_gst_mpegts_nit_copy (GstMpegTsNIT * nit)
{
/* FIXME : IMPLEMENT */
return NULL;
}
static void
_gst_mpegts_nit_free (GstMpegTsNIT * nit)
{
/* FIXME: IMPLEMENT */
}
G_DEFINE_BOXED_TYPE (GstMpegTsNIT, gst_mpegts_nit,
(GBoxedCopyFunc) _gst_mpegts_nit_copy, (GFreeFunc) _gst_mpegts_nit_free);
static GstMpegTsNITStream *
_gst_mpegts_nit_stream_copy (GstMpegTsNITStream * nit)
{
/* FIXME : IMPLEMENT */
return NULL;
}
static void
_gst_mpegts_nit_stream_free (GstMpegTsNITStream * nit)
{
g_array_unref (nit->descriptors);
g_slice_free (GstMpegTsNITStream, nit);
}
G_DEFINE_BOXED_TYPE (GstMpegTsNITStream, gst_mpegts_nit_stream,
(GBoxedCopyFunc) _gst_mpegts_nit_stream_copy,
(GFreeFunc) _gst_mpegts_nit_stream_free);
static GstMpegTsNIT *
_parse_nit (GstMpegTsSection * section)
{
GstMpegTsNIT *nit = NULL;
guint i = 0, j, allocated_streams = 12;
guint8 *data, *end, *entry_begin;
guint16 descriptors_loop_length, transport_stream_loop_length;
GST_DEBUG ("NIT");
/* fixed header + CRC == 16 */
if (section->section_length < 23) {
GST_WARNING ("PID %d invalid NIT size %d",
section->pid, section->section_length);
goto error;
}
nit = g_slice_new0 (GstMpegTsNIT);
data = section->data;
end = data + section->section_length;
/* Skip already parsed data */
data += 8;
nit->actual_network = section->table_id == 0x40;
descriptors_loop_length = GST_READ_UINT16_BE (data) & 0x0FFF;
data += 2;
/* see if the buffer is large enough */
if (descriptors_loop_length && (data + descriptors_loop_length > end - 4)) {
GST_WARNING ("PID %d invalid NIT descriptors loop length %d",
section->pid, descriptors_loop_length);
goto error;
}
nit->descriptors =
gst_mpegts_parse_descriptors (data, descriptors_loop_length);
if (nit->descriptors == NULL)
goto error;
data += descriptors_loop_length;
transport_stream_loop_length = GST_READ_UINT16_BE (data) & 0x0FFF;
data += 2;
if (G_UNLIKELY (transport_stream_loop_length > (end - 4 - data))) {
GST_WARNING
("PID 0x%04x invalid NIT (transport_stream_loop_length too big)",
section->pid);
goto error;
}
nit->streams =
g_ptr_array_new_full (allocated_streams,
(GDestroyNotify) _gst_mpegts_nit_stream_free);
/* read up to the CRC */
while (transport_stream_loop_length - 4 > 0) {
GstMpegTsNITStream *stream = g_slice_new0 (GstMpegTsNITStream);
g_ptr_array_add (nit->streams, stream);
if (transport_stream_loop_length < 10) {
/* each entry must be at least 6 bytes (+ 4bytes CRC) */
GST_WARNING ("PID %d invalid NIT entry size %d",
section->pid, transport_stream_loop_length);
goto error;
}
entry_begin = data;
stream->transport_stream_id = GST_READ_UINT16_BE (data);
data += 2;
stream->original_network_id = GST_READ_UINT16_BE (data);
data += 2;
descriptors_loop_length = GST_READ_UINT16_BE (data) & 0x0FFF;
data += 2;
GST_DEBUG ("descriptors_loop_length %d", descriptors_loop_length);
if (descriptors_loop_length && (data + descriptors_loop_length > end - 4)) {
GST_WARNING
("PID %d invalid NIT entry %d descriptors loop length %d (only have %"
G_GSIZE_FORMAT ")", section->pid, section->subtable_extension,
descriptors_loop_length, end - 4 - data);
goto error;
}
stream->descriptors =
gst_mpegts_parse_descriptors (data, descriptors_loop_length);
if (stream->descriptors == NULL)
goto error;
data += descriptors_loop_length;
/* At least notify the descriptors we are not handling :( */
for (j = 0; j < stream->descriptors->len; j++) {
GstMpegTsDescriptor *desc =
&g_array_index (stream->descriptors, GstMpegTsDescriptor, j);
switch (desc->descriptor_tag) {
case GST_MTS_DESC_DVB_TERRESTRIAL_DELIVERY_SYSTEM:
case GST_MTS_DESC_DVB_FREQUENCY_LIST:
GST_FIXME ("Not handling previously handled tag 0x%02x",
desc->descriptor_tag);
break;
default:
GST_LOG ("Not handling tag 0x%02x", desc->descriptor_tag);
break;
}
}
i += 1;
transport_stream_loop_length -= data - entry_begin;
}
if (data != end - 4) {
GST_WARNING ("PID %d invalid NIT parsed %d length %d",
section->pid, (gint) (data - section->data), section->section_length);
goto error;
}
return nit;
error:
if (nit)
gst_mpegts_section_unref (nit);
return NULL;
}
/**
* gst_mpegts_section_get_nit:
* @section: a #GstMpegTsSection of type %GST_MPEGTS_SECTION_NIT
*
* Returns the #GstMpegTsNIT contained in the @section.
*
* Returns: The #GstMpegTsNIT contained in the section, or %NULL if an error
* happened.
*/
const GstMpegTsNIT *
gst_mpegts_section_get_nit (GstMpegTsSection * section)
{
g_return_val_if_fail (section->section_type == GST_MPEGTS_SECTION_NIT, NULL);
g_return_val_if_fail (section->cached_parsed || section->data, NULL);
if (!section->cached_parsed) {
if (G_UNLIKELY (_calc_crc32 (section->data, section->section_length) != 0))
goto bad_crc;
section->cached_parsed = (gpointer) _parse_nit (section);
if (section->cached_parsed == NULL)
goto parse_failure;
}
return (const GstMpegTsNIT *) section->cached_parsed;
bad_crc:
{
GST_WARNING ("Bad CRC on section");
return NULL;
}
parse_failure:
{
GST_WARNING ("Failure to parse section");
return NULL;
}
}
/* Service Description Table (SDT) */
static GstMpegTsSDT *
_gst_mpegts_sdt_copy (GstMpegTsSDT * sdt)
{
/* FIXME : IMPLEMENT */
return NULL;
}
static void
_gst_mpegts_sdt_free (GstMpegTsSDT * sdt)
{
/* FIXME: IMPLEMENT */
}
G_DEFINE_BOXED_TYPE (GstMpegTsSDT, gst_mpegts_sdt,
(GBoxedCopyFunc) _gst_mpegts_sdt_copy, (GFreeFunc) _gst_mpegts_sdt_free);
static GstMpegTsSDTService *
_gst_mpegts_sdt_service_copy (GstMpegTsSDTService * sdt)
{
/* FIXME : IMPLEMENT */
return NULL;
}
static void
_gst_mpegts_sdt_service_free (GstMpegTsSDTService * sdt)
{
g_array_unref (sdt->descriptors);
g_slice_free (GstMpegTsSDTService, sdt);
}
G_DEFINE_BOXED_TYPE (GstMpegTsSDTService, gst_mpegts_sdt_service,
(GBoxedCopyFunc) _gst_mpegts_sdt_service_copy,
(GFreeFunc) _gst_mpegts_sdt_service_free);
static GstMpegTsSDT *
_parse_sdt (GstMpegTsSection * section)
{
GstMpegTsSDT *sdt = NULL;
guint i = 0, allocated_services = 8;
guint8 *data, *end, *entry_begin;
guint tmp;
guint sdt_info_length;
guint descriptors_loop_length;
GST_DEBUG ("SDT");
/* fixed header + CRC == 16 */
if (section->section_length < 14) {
GST_WARNING ("PID %d invalid SDT size %d",
section->pid, section->section_length);
goto error;
}
sdt = g_slice_new0 (GstMpegTsSDT);
data = section->data;
end = data + section->section_length;
/* Skip common fields */
data += 8;
sdt->original_network_id = GST_READ_UINT16_BE (data);
data += 2;
/* skip reserved byte */
data += 1;
sdt->actual_ts = section->table_id == 0x42;
sdt_info_length = section->section_length - 11;
sdt->services = g_ptr_array_new_full (allocated_services,
(GDestroyNotify) _gst_mpegts_sdt_service_free);
/* read up to the CRC */
while (sdt_info_length - 4 > 0) {
GstMpegTsSDTService *service = g_slice_new0 (GstMpegTsSDTService);
g_ptr_array_add (sdt->services, service);
entry_begin = data;
if (sdt_info_length < 9) {
/* each entry must be at least 5 bytes (+4 bytes for the CRC) */
GST_WARNING ("PID %d invalid SDT entry size %d",
section->pid, sdt_info_length);
goto error;
}
service->service_id = GST_READ_UINT16_BE (data);
data += 2;
service->EIT_schedule_flag = ((*data & 0x02) == 2);
service->EIT_present_following_flag = (*data & 0x01) == 1;
data += 1;
tmp = GST_READ_UINT16_BE (data);
service->running_status = (*data >> 5) & 0x07;
service->free_CA_mode = (*data >> 4) & 0x01;
descriptors_loop_length = tmp & 0x0FFF;
data += 2;
if (descriptors_loop_length && (data + descriptors_loop_length > end - 4)) {
GST_WARNING ("PID %d invalid SDT entry %d descriptors loop length %d",
section->pid, service->service_id, descriptors_loop_length);
goto error;
}
service->descriptors =
gst_mpegts_parse_descriptors (data, descriptors_loop_length);
if (!service->descriptors)
goto error;
data += descriptors_loop_length;
sdt_info_length -= data - entry_begin;
i += 1;
}
if (data != end - 4) {
GST_WARNING ("PID %d invalid SDT parsed %d length %d",
section->pid, (gint) (data - section->data), section->section_length);
goto error;
}
return sdt;
error:
if (sdt)
_gst_mpegts_sdt_free (sdt);
return NULL;
}
/**
* gst_mpegts_section_get_sdt:
* @section: a #GstMpegTsSection of type %GST_MPEGTS_SECTION_SDT
*
* Returns the #GstMpegTsSDT contained in the @section.
*
* Returns: The #GstMpegTsSDT contained in the section, or %NULL if an error
* happened.
*/
const GstMpegTsSDT *
gst_mpegts_section_get_sdt (GstMpegTsSection * section)
{
g_return_val_if_fail (section->section_type == GST_MPEGTS_SECTION_SDT, NULL);
g_return_val_if_fail (section->cached_parsed || section->data, NULL);
if (!section->cached_parsed) {
if (G_UNLIKELY (_calc_crc32 (section->data, section->section_length) != 0))
goto bad_crc;
section->cached_parsed = (gpointer) _parse_sdt (section);
if (section->cached_parsed == NULL)
goto parse_failure;
}
return (const GstMpegTsSDT *) section->cached_parsed;
bad_crc:
{
GST_WARNING ("Bad CRC on section");
return NULL;
}
parse_failure:
{
GST_WARNING ("Failure to parse section");
return NULL;
}
}
/* Time and Date Table (TDT) */
static GstDateTime *
_parse_tdt (GstMpegTsSection * section)
{
/* FIXME : Add length check */
return _parse_utc_time (section->data + 3);
}
/**
* gst_mpegts_section_get_tdt:
* @section: a #GstMpegTsSection of type %GST_MPEGTS_SECTION_TDT
*
* Returns the #GstDateTime of the TDT
*
* Returns: The #GstDateTime contained in the section, or %NULL
* if an error happened. Release with #gst_date_time_unref when done.
*/
GstDateTime *
gst_mpegts_section_get_tdt (GstMpegTsSection * section)
{
g_return_val_if_fail (section->section_type == GST_MPEGTS_SECTION_TDT, NULL);
g_return_val_if_fail (section->cached_parsed || section->data, NULL);
if (!section->cached_parsed) {
section->cached_parsed = (gpointer) _parse_tdt (section);
if (section->cached_parsed == NULL)
goto parse_failure;
}
return gst_date_time_ref ((GstDateTime *) section->cached_parsed);
parse_failure:
{
GST_WARNING ("Failure to parse section");
return NULL;
}
}
/* Time Offset Table (TOT) */
static GstMpegTsTOT *
_gst_mpegts_tot_copy (GstMpegTsTOT * tot)
{
/* FIXME : IMPLEMENT */
return NULL;
}
static void
_gst_mpegts_tot_free (GstMpegTsTOT * tot)
{
/* FIXME: IMPLEMENT */
}
G_DEFINE_BOXED_TYPE (GstMpegTsTOT, gst_mpegts_tot,
(GBoxedCopyFunc) _gst_mpegts_tot_copy, (GFreeFunc) _gst_mpegts_tot_free);
static GstMpegTsTOT *
_parse_tot (GstMpegTsSection * section)
{
guint8 *data;
GstMpegTsTOT *tot;
guint16 desc_len;
/* FIXME : Check minimum length */
GST_DEBUG ("TOT");
tot = g_slice_new0 (GstMpegTsTOT);
tot->utc_time = _parse_utc_time (section->data + 3);
/* Skip 5 bytes from utc_time (+3 of initial offset) */
data = section->data + 8;
desc_len = GST_READ_UINT16_BE (data) & 0xFFF;
tot->descriptors = gst_mpegts_parse_descriptors (data, desc_len);
return tot;
}
/**
* gst_mpegts_section_get_tot:
* @section: a #GstMpegTsSection of type %GST_MPEGTS_SECTION_TOT
*
* Returns the #GstMpegTsTOT contained in the @section.
*
* Returns: The #GstMpegTsTOT contained in the section, or %NULL if an error
* happened.
*/
const GstMpegTsTOT *
gst_mpegts_section_get_tot (GstMpegTsSection * section)
{
g_return_val_if_fail (section->section_type == GST_MPEGTS_SECTION_TOT, NULL);
g_return_val_if_fail (section->cached_parsed || section->data, NULL);
if (!section->cached_parsed) {
if (G_UNLIKELY (_calc_crc32 (section->data, section->section_length) != 0))
goto bad_crc;
section->cached_parsed = (gpointer) _parse_tot (section);
if (section->cached_parsed == NULL)
goto parse_failure;
}
return (const GstMpegTsTOT *) section->cached_parsed;
bad_crc:
{
GST_WARNING ("Bad CRC on section");
return NULL;
}
parse_failure:
{
GST_WARNING ("Failure to parse section");
return NULL;
}
}
/** /**
* gst_mpegts_initialize: * gst_mpegts_initialize:
* *
@ -1396,8 +633,10 @@ gst_mpegts_initialize (void)
__initialize_descriptors (); __initialize_descriptors ();
} }
/* FIXME : Later on we might need to use more than just the table_id
* to figure out which type of section this is. */
static GstMpegTsSectionType static GstMpegTsSectionType
_identify_section (GstMpegTsSectionTableID table_id) _identify_section (guint8 table_id)
{ {
switch (table_id) { switch (table_id) {
case GST_MTS_TABLE_ID_PROGRAM_ASSOCIATION: case GST_MTS_TABLE_ID_PROGRAM_ASSOCIATION:

310
gst-libs/gst/mpegts/gstmpegtssection.h
View file

@ -49,7 +49,6 @@ GType gst_mpegts_section_get_type (void);
* @GST_MPEGTS_SECTION_SDT: Service Description Table (EN 300 468) * @GST_MPEGTS_SECTION_SDT: Service Description Table (EN 300 468)
* @GST_MPEGTS_SECTION_TDT: Time and Date Table (EN 300 468) * @GST_MPEGTS_SECTION_TDT: Time and Date Table (EN 300 468)
* @GST_MPEGTS_SECTION_TOT: Time Offset Table (EN 300 468) * @GST_MPEGTS_SECTION_TOT: Time Offset Table (EN 300 468)
* @GST_MPEGTS_SECTION_LAST:
* *
* Types of #GstMpegTsSection that the library handles. * Types of #GstMpegTsSection that the library handles.
*/ */
@ -64,24 +63,17 @@ typedef enum {
GST_MPEGTS_SECTION_BAT, GST_MPEGTS_SECTION_BAT,
GST_MPEGTS_SECTION_SDT, GST_MPEGTS_SECTION_SDT,
GST_MPEGTS_SECTION_TDT, GST_MPEGTS_SECTION_TDT,
GST_MPEGTS_SECTION_TOT, GST_MPEGTS_SECTION_TOT
GST_MPEGTS_SECTION_LAST
} GstMpegTsSectionType; } GstMpegTsSectionType;
/* FIXME : How do we deal with clashing table_id for the various standards:
* * ISO/IEC 13818-1 and ITU H.222.0 : Takes precedence over all
* * DVB : most used ?
* * ATSC
* * ISDB (and the brazilian variant)
* * DTMB (China)
* * DMB (South Korea)
*
* Do we create a different enum for variants ?
*/
/** /**
* GstMpegTsSectionTableID: * GstMpegTsSectionTableID:
* *
* Values for a #GstMpegTsSection table_id * Values for a #GstMpegTsSection table_id
*
* These are the registered ITU H.222.0 | ISO/IEC 13818-1 table_id variants.
*
* see also #GstMpegTsSectionATSCTableID and #GstMpegTsSectionDVBTableID.
*/ */
typedef enum { typedef enum {
/* ITU H.222.0 / IEC 13818-1 */ /* ITU H.222.0 / IEC 13818-1 */
@ -94,6 +86,8 @@ typedef enum {
GST_MTS_TABLE_ID_METADATA = 0x06, GST_MTS_TABLE_ID_METADATA = 0x06,
GST_MTS_TABLE_ID_IPMP_CONTROL_INFORMATION = 0x07, GST_MTS_TABLE_ID_IPMP_CONTROL_INFORMATION = 0x07,
/* 0x08 - 0x39 : ITU H.222.0 | ISO/IEC 13818-1 reserved */
/* IEC 13818-6 (DSM-CC) */ /* IEC 13818-6 (DSM-CC) */
GST_MTS_TABLE_ID_DSM_CC_MULTIPROTO_ENCAPSULATED_DATA = 0x3A, GST_MTS_TABLE_ID_DSM_CC_MULTIPROTO_ENCAPSULATED_DATA = 0x3A,
GST_MTS_TABLE_ID_DSM_CC_U_N_MESSAGES = 0x3B, GST_MTS_TABLE_ID_DSM_CC_U_N_MESSAGES = 0x3B,
@ -102,89 +96,6 @@ typedef enum {
GST_MTS_TABLE_ID_DSM_CC_PRIVATE_DATA = 0x3E, GST_MTS_TABLE_ID_DSM_CC_PRIVATE_DATA = 0x3E,
GST_MTS_TABLE_ID_DSM_CC_ADDRESSABLE_SECTIONS = 0x3F, GST_MTS_TABLE_ID_DSM_CC_ADDRESSABLE_SECTIONS = 0x3F,
/* EN 300 468 (DVB) v 1.12.1 */
GST_MTS_TABLE_ID_NETWORK_INFORMATION_ACTUAL_NETWORK = 0x40,
GST_MTS_TABLE_ID_NETWORK_INFORMATION_OTHER_NETWORK = 0x41,
GST_MTS_TABLE_ID_SERVICE_DESCRIPTION_ACTUAL_TS = 0x42,
GST_MTS_TABLE_ID_SERVICE_DESCRIPTION_OTHER_TS = 0x46,
GST_MTS_TABLE_ID_BOUQUET_ASSOCIATION = 0x4A,
GST_MTS_TABLE_ID_EVENT_INFORMATION_ACTUAL_TS_PRESENT = 0x4E,
GST_MTS_TABLE_ID_EVENT_INFORMATION_OTHER_TS_PRESENT = 0x4F,
GST_MTS_TABLE_ID_EVENT_INFORMATION_ACTUAL_TS_SCHEDULE_1 = 0x50,
GST_MTS_TABLE_ID_EVENT_INFORMATION_ACTUAL_TS_SCHEDULE_N = 0x5F,
GST_MTS_TABLE_ID_EVENT_INFORMATION_OTHER_TS_SCHEDULE_1 = 0x60,
GST_MTS_TABLE_ID_EVENT_INFORMATION_OTHER_TS_SCHEDULE_N = 0x6F,
GST_MTS_TABLE_ID_TIME_DATE = 0x70,
GST_MTS_TABLE_ID_RUNNING_STATUS = 0x71,
GST_MTS_TABLE_ID_STUFFING = 0x72,
GST_MTS_TABLE_ID_TIME_OFFSET = 0x73,
/* TS 102 812 (MHP v1.1.3) */
GST_MTS_TABLE_ID_APPLICATION_INFORMATION_TABLE = 0x74,
/* TS 102 323 (DVB TV Anytime v1.5.1) */
GST_MTS_TABLE_ID_CONTAINER = 0x75,
GST_MTS_TABLE_ID_RELATED_CONTENT = 0x76,
GST_MTS_TABLE_ID_CONTENT_IDENTIFIER = 0x77,
/* EN 301 192 (DVB specification for data broadcasting) */
GST_MTS_TABLE_ID_MPE_FEC = 0x78,
/* TS 102 323 (DVB TV Anytime v1.5.1) */
GST_MTS_TABLE_ID_RESOLUTION_NOTIFICATION = 0x79,
/* TS 102 772 (DVB-SH Multi-Protocol Encapsulation) */
GST_MTS_TABLE_ID_MPE_IFEC = 0x7A,
/* EN 300 468 (DVB) v 1.12.1 */
GST_MTS_TABLE_ID_DISCONTINUITY_INFORMATION = 0x7E,
GST_MTS_TABLE_ID_SELECTION_INFORMATION = 0x7F,
/* ETR 289 (DVB Support for use of scrambling and CA) */
GST_MTS_TABLE_ID_CA_MESSAGE_ECM_0 = 0x80,
GST_MTS_TABLE_ID_CA_MESSAGE_ECM_1 = 0x81,
GST_MTS_TABLE_ID_CA_MESSAGE_SYSTEM_PRIVATE_1 = 0x82,
GST_MTS_TABLE_ID_CA_MESSAGE_SYSTEM_PRIVATE_N = 0x8F,
/* ... */
/* EN 301 790 (DVB interaction channel for satellite distribution channels) */
GST_MTS_TABLE_ID_SCT = 0xA0,
GST_MTS_TABLE_ID_FCT = 0xA1,
GST_MTS_TABLE_ID_TCT = 0xA2,
GST_MTS_TABLE_ID_SPT = 0xA3,
GST_MTS_TABLE_ID_CMT = 0xA4,
GST_MTS_TABLE_ID_TBTP = 0xA5,
GST_MTS_TABLE_ID_PCR_PACKET_PAYLOAD = 0xA6,
GST_MTS_TABLE_ID_TRANSMISSION_MODE_SUPPORT_PAYLOAD = 0xAA,
GST_MTS_TABLE_ID_TIM = 0xB0,
GST_MTS_TABLE_ID_LL_FEC_PARITY_DATA_TABLE = 0xB1,
/* ATSC (A/65) */
GST_MTS_TABLE_ID_ATSC_MASTER_GUIDE = 0xC7,
GST_MTS_TABLE_ID_ATSC_TERRESTRIAL_VIRTUAL_CHANNEL = 0xC8,
GST_MTS_TABLE_ID_ATSC_CABLE_VIRTUAL_CHANNEL = 0xC9,
GST_MTS_TABLE_ID_ATSC_RATING_REGION = 0xCA,
GST_MTS_TABLE_ID_ATSC_EVENT_INFORMATION = 0xCB,
GST_MTS_TABLE_ID_ATSC_CHANNEL_OR_EVENT_EXTENDED_TEXT = 0xCC,
GST_MTS_TABLE_ID_ATSC_SYSTEM_TIME = 0xCD,
/* ATSC (A/90) */
GST_MTS_TABLE_ID_ATSC_DATA_EVENT = 0xCE,
GST_MTS_TABLE_ID_ATSC_DATA_SERVICE = 0xCF,
/* 0xD0 ?? */
GST_MTS_TABLE_ID_ATSC_NETWORK_RESOURCE = 0xD1,
GST_MTS_TABLE_ID_ATSC_LONG_TERM_SERVICE = 0xD2,
GST_MTS_TABLE_ID_ATSC_DIRECTED_CHANNEL_CHANGE = 0xD3,
GST_MTS_TABLE_ID_ATSC_DIRECTED_CHANNEL_CHANGE_SECTION_CODE = 0xD4,
/* 0xD5 ?? */
GST_MTS_TABLE_ID_ATSC_AGGREGATE_EVENT_INFORMATION = 0xD6,
GST_MTS_TABLE_ID_ATSC_AGGREGATE_EXTENDED_TEXT = 0xD7,
/* 0xD8 ?? */
GST_MTS_TABLE_ID_ATSC_AGGREGATE_DATA_EVENT = 0xD9,
GST_MTS_TABLE_ID_ATSC_SATELLITE_VIRTUAL_CHANNEL = 0xDA,
/* ISDB (FILLME) Might interfere with ATSC table id */
/* Unset */ /* Unset */
GST_MTS_TABLE_ID_UNSET = 0xFF GST_MTS_TABLE_ID_UNSET = 0xFF
@ -214,7 +125,7 @@ struct _GstMpegTsSection
GstMpegTsSectionType section_type; GstMpegTsSectionType section_type;
guint16 pid; guint16 pid;
GstMpegTsSectionTableID table_id; guint8 table_id;
guint16 subtable_extension; guint16 subtable_extension;
guint8 version_number; guint8 version_number;
@ -234,6 +145,8 @@ struct _GstMpegTsSection
guint section_length; guint section_length;
/* cached_parsed: cached copy of parsed section */ /* cached_parsed: cached copy of parsed section */
gpointer *cached_parsed; gpointer *cached_parsed;
/* destroy_parsed: function to clear cached_parsed */
GDestroyNotify destroy_parsed;
/* offset: offset of the section within the container stream */ /* offset: offset of the section within the container stream */
guint64 offset; guint64 offset;
/* short_section: TRUE if section_syntax_indicator == 0 /* short_section: TRUE if section_syntax_indicator == 0
@ -242,23 +155,6 @@ struct _GstMpegTsSection
gboolean short_section; gboolean short_section;
}; };
/**
* GstMpegTsRunningStatus:
*
* Running status of a service.
*
* Corresponds to table 6 of ETSI EN 300 468 (v1.13.0)
*/
typedef enum
{
GST_MPEGTS_RUNNING_STATUS_UNDEFINED = 0,
GST_MPEGTS_RUNNING_STATUS_NOT_RUNNING,
GST_MPEGTS_RUNNING_STATUS_STARTS_IN_FEW_SECONDS,
GST_MPEGTS_RUNNING_STATUS_PAUSING,
GST_MPEGTS_RUNNING_STATUS_RUNNING,
GST_MPEGTS_RUNNING_STATUS_OFF_AIR
} GstMpegTsRunningStatus;
/* PAT */ /* PAT */
typedef struct _GstMpegTsPatProgram GstMpegTsPatProgram; typedef struct _GstMpegTsPatProgram GstMpegTsPatProgram;
@ -332,192 +228,6 @@ const GstMpegTsPMT *gst_mpegts_section_get_pmt (GstMpegTsSection *section);
GArray *gst_mpegts_section_get_tsdt (GstMpegTsSection *section); GArray *gst_mpegts_section_get_tsdt (GstMpegTsSection *section);
/* NIT */
typedef struct _GstMpegTsNITStream GstMpegTsNITStream;
typedef struct _GstMpegTsNIT GstMpegTsNIT;
#define GST_TYPE_MPEGTS_NIT (gst_mpegts_nit_get_type())
#define GST_TYPE_MPEGTS_NIT_STREAM (gst_mpegts_nit_stream_get_type())
/**
* GstMpegTsNITStream:
* @transport_stream_id:
* @original_network_id:
* @descriptors: (element-type GstMpegTsDescriptor)
*
*/
struct _GstMpegTsNITStream
{
guint16 transport_stream_id;
guint16 original_network_id;
GArray *descriptors;
};
/**
* GstMpegTsNIT:
* @actual_network: Whether this NIT corresponds to the actual stream
* @descriptors: (element-type GstMpegTsDescriptor) the global descriptors
* @streams: (element-type GstMpegTsNITStream) the streams
*
* Network Information Table (ISO/IEC 13818-1 / EN 300 468)
*
* The network_id is contained in the subtable_extension field of the
* container #GstMpegTsSection.
*/
struct _GstMpegTsNIT
{
gboolean actual_network;
GArray *descriptors;
GPtrArray *streams;
};
GType gst_mpegts_nit_get_type (void);
GType gst_mpegts_nit_stream_get_type (void);
const GstMpegTsNIT *gst_mpegts_section_get_nit (GstMpegTsSection *section);
/* BAT */
typedef struct _GstMpegTsBATStream GstMpegTsBATStream;
typedef struct _GstMpegTsBAT GstMpegTsBAT;
#define GST_TYPE_MPEGTS_BAT (gst_mpegts_bat_get_type())
struct _GstMpegTsBATStream
{
guint16 transport_stream_id;
guint16 original_network_id;
GArray *descriptors;
};
/**
* GstMpegTsBAT:
*
* DVB Bouquet Association Table (EN 300 468)
*/
struct _GstMpegTsBAT
{
gboolean actual_network;
GArray *descriptors;
GPtrArray *streams;
};
GType gst_mpegts_bat_get_type (void);
/* SDT */
#define GST_TYPE_MPEGTS_SDT (gst_mpegts_sdt_get_type())
#define GST_TYPE_MPEGTS_SDT_SERVICE (gst_mpegts_sdt_service_get_type())
typedef struct _GstMpegTsSDTService GstMpegTsSDTService;
typedef struct _GstMpegTsSDT GstMpegTsSDT;
struct _GstMpegTsSDTService
{
guint16 service_id;
gboolean EIT_schedule_flag;
gboolean EIT_present_following_flag;
GstMpegTsRunningStatus running_status;
gboolean free_CA_mode;
GArray *descriptors;
};
/**
* GstMpegTsSDT:
*
* Service Description Table (EN 300 468)
*/
struct _GstMpegTsSDT
{
guint16 original_network_id;
gboolean actual_ts;
GPtrArray *services;
};
GType gst_mpegts_sdt_get_type (void);
GType gst_mpegts_sdt_service_get_type (void);
const GstMpegTsSDT *gst_mpegts_section_get_sdt (GstMpegTsSection *section);
/* EIT */
#define GST_TYPE_MPEGTS_EIT (gst_mpegts_eit_get_type())
#define GST_TYPE_MPEGTS_EIT_EVENT (gst_mpegts_eit_event_get_type())
typedef struct _GstMpegTsEITEvent GstMpegTsEITEvent;
typedef struct _GstMpegTsEIT GstMpegTsEIT;
/**
* GstMpegTsEITEvent:
*
* Event from a @GstMpegTsEIT
*/
struct _GstMpegTsEITEvent
{
guint16 event_id;
GstDateTime *start_time;
guint32 duration;
GstMpegTsRunningStatus running_status;
gboolean free_CA_mode;
GArray *descriptors;
};
/**
* GstMpegTsEIT:
*
* Event Information Table (EN 300 468)
*/
struct _GstMpegTsEIT
{
guint16 transport_stream_id;
guint16 original_network_id;
guint8 segment_last_section_number;
guint8 last_table_id;
gboolean actual_stream;
gboolean present_following;
GPtrArray *events;
};
GType gst_mpegts_eit_get_type (void);
GType gst_mpegts_eit_event_get_type (void);
const GstMpegTsEIT *gst_mpegts_section_get_eit (GstMpegTsSection *section);
/* TDT */
GstDateTime *gst_mpegts_section_get_tdt (GstMpegTsSection *section);
/* TOT */
typedef struct _GstMpegTsTOT GstMpegTsTOT;
#define GST_TYPE_MPEGTS_TOT (gst_mpegts_tot_get_type())
/**
* GstMpegTsTOT:
*
* Time Offset Table (EN 300 468)
*/
struct _GstMpegTsTOT
{
GstDateTime *utc_time;
GArray *descriptors;
};
GType gst_mpegts_tot_get_type (void);
const GstMpegTsTOT *gst_mpegts_section_get_tot (GstMpegTsSection *section);
/* generic */ /* generic */

2
gst-libs/gst/mpegts/mpegts.h
View file

@ -26,6 +26,8 @@
#include <gst/mpegts/gstmpegtsdescriptor.h> #include <gst/mpegts/gstmpegtsdescriptor.h>
#include <gst/mpegts/gstmpegtssection.h> #include <gst/mpegts/gstmpegtssection.h>
#include <gst/mpegts/gst-atsc-section.h>
#include <gst/mpegts/gst-dvb-section.h>
#include <gst/mpegts/gstmpegts-enumtypes.h> #include <gst/mpegts/gstmpegts-enumtypes.h>
void gst_mpegts_initialize (void); void gst_mpegts_initialize (void);