gstreamer/gst-libs/gst/mpegts/gstmpegtsdescriptor.h

/*
 * gstmpegtsdescriptor.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.
 *
 * Some parts of this code come from the Fluendo MPEG Demuxer plugin.
 *
 * The Initial Developer of the Original Code is Fluendo, S.L.
 * Portions created by Fluendo, S.L. are Copyright (C) 2005
 * Fluendo, S.L. All Rights Reserved.
 *
 * Contributor(s): Wim Taymans <wim@fluendo.com>
 */

#ifndef GST_MPEGTS_DESCRIPTOR_H
#define GST_MPEGTS_DESCRIPTOR_H

#include <gst/gst.h>

G_BEGIN_DECLS

/*
 * descriptor_tag TS  PS                      Identification
 *        0       n/a n/a Reserved
 *        1       n/a n/a Reserved
 *        2        X   X  video_stream_descriptor
 *        3        X   X  audio_stream_descriptor
 *        4        X   X  hierarchy_descriptor
 *        5        X   X  registration_descriptor
 *        6        X   X  data_stream_alignment_descriptor
 *        7        X   X  target_background_grid_descriptor
 *        8        X   X  video_window_descriptor
 *        9        X   X  CA_descriptor
 *       10        X   X  ISO_639_language_descriptor
 *       11        X   X  system_clock_descriptor
 *       12        X   X  multiplex_buffer_utilization_descriptor
 *       13        X   X  copyright_descriptor
 *       14        X      maximum bitrate descriptor
 *       15        X   X  private data indicator descriptor
 *       16        X   X  smoothing buffer descriptor
 *       17        X      STD_descriptor
 *       18        X   X  IBP descriptor
 *      19-63     n/a n/a ITU-T Rec. H.222.0 | ISO/IEC 13818-1 Reserved
 *     64-255     n/a n/a User Private
 */

/**
 * GstMpegTsDescriptorType:
 *
 * The type of #GstMpegTsDescriptor
 *
 * These values correspond to the registered descriptor type from
 * the base MPEG-TS specifications (ITU H.222.0 | ISO/IEC 13818-1).
 *
 * Consult the relevant specifications for more details.
 */
typedef enum {
  /* 0-18 ISO/IEC 13818-1 (H222.0 06/2012) */
  GST_MTS_DESC_RESERVED_00                      = 0x00,
  GST_MTS_DESC_RESERVED_01                      = 0x01,
  GST_MTS_DESC_VIDEO_STREAM                     = 0x02,
  GST_MTS_DESC_AUDIO_STREAM                     = 0x03,
  GST_MTS_DESC_HIERARCHY                        = 0x04,
  GST_MTS_DESC_REGISTRATION                     = 0x05,
  GST_MTS_DESC_DATA_STREAM_ALIGNMENT            = 0x06,
  GST_MTS_DESC_TARGET_BACKGROUND_GRID           = 0x07,
  GST_MTS_DESC_VIDEO_WINDOW                     = 0x08,
  GST_MTS_DESC_CA                               = 0x09,
  GST_MTS_DESC_ISO_639_LANGUAGE                 = 0x0A,
  GST_MTS_DESC_SYSTEM_CLOCK                     = 0x0B,
  GST_MTS_DESC_MULTIPLEX_BUFFER_UTILISATION     = 0x0C,
  GST_MTS_DESC_COPYRIGHT                        = 0x0D,
  GST_MTS_DESC_MAXIMUM_BITRATE                  = 0x0E,
  GST_MTS_DESC_PRIVATE_DATA_INDICATOR           = 0x0F,
  GST_MTS_DESC_SMOOTHING_BUFFER                 = 0x10,
  GST_MTS_DESC_STD                              = 0x11,
  GST_MTS_DESC_IBP                              = 0x12,

  /* 19-26 Defined in ISO/IEC 13818-6 (Extensions for DSM-CC) */
  GST_MTS_DESC_DSMCC_CAROUSEL_IDENTIFIER        = 0x13,
  GST_MTS_DESC_DSMCC_ASSOCIATION_TAG            = 0x14,
  GST_MTS_DESC_DSMCC_DEFERRED_ASSOCIATION_TAG   = 0x15,
  /* 0x16 is reserved (so far) */
  GST_MTS_DESC_DSMCC_NPT_REFERENCE              = 0x17,
  GST_MTS_DESC_DSMCC_NPT_ENDPOINT               = 0x18,
  GST_MTS_DESC_DSMCC_STREAM_MODE                = 0x19,
  GST_MTS_DESC_DSMCC_STREAM_EVENT               = 0x1A,

  /* 27-54 Later additions to ISO/IEC 13818-1 (H222.0 06/2012) */
  GST_MTS_DESC_MPEG4_VIDEO                      = 0x1B,
  GST_MTS_DESC_MPEG4_AUDIO                      = 0x1C,
  GST_MTS_DESC_IOD                              = 0x1D,
  GST_MTS_DESC_SL                               = 0x1E,
  GST_MTS_DESC_FMC                              = 0x1F,
  GST_MTS_DESC_EXTERNAL_ES_ID                   = 0x20,
  GST_MTS_DESC_MUX_CODE                         = 0x21,
  GST_MTS_DESC_FMX_BUFFER_SIZE                  = 0x22,
  GST_MTS_DESC_MULTIPLEX_BUFFER                 = 0x23,
  GST_MTS_DESC_CONTENT_LABELING                 = 0x24,
  GST_MTS_DESC_METADATA_POINTER                 = 0x25,
  GST_MTS_DESC_METADATA                         = 0x26,
  GST_MTS_DESC_METADATA_STD                     = 0x27,
  GST_MTS_DESC_AVC_VIDEO                        = 0x28,
  /* defined in ISO/IEC 13818-11, MPEG-2 IPMP */
  GST_MTS_DESC_IPMP                             = 0x29,
  GST_MTS_DESC_AVC_TIMING_AND_HRD               = 0x2A,
  GST_MTS_DESC_MPEG2_AAC_AUDIO                  = 0x2B,
  GST_MTS_DESC_FLEX_MUX_TIMING                  = 0x2C,
  GST_MTS_DESC_MPEG4_TEXT                       = 0x2D,
  GST_MTS_DESC_MPEG4_AUDIO_EXTENSION            = 0x2E,
  GST_MTS_DESC_AUXILIARY_VIDEO_STREAM           = 0x2F,
  GST_MTS_DESC_SVC_EXTENSION                    = 0x30,
  GST_MTS_DESC_MVC_EXTENSION                    = 0x31,
  GST_MTS_DESC_J2K_VIDEO                        = 0x32,
  GST_MTS_DESC_MVC_OPERATION_POINT              = 0x33,
  GST_MTS_DESC_MPEG2_STEREOSCOPIC_VIDEO_FORMAT  = 0x34,
  GST_MTS_DESC_STEREOSCOPIC_PROGRAM_INFO        = 0x35,
  GST_MTS_DESC_STEREOSCOPIC_VIDEO_INFO          = 0x36,

  /* 55-63 ITU-T Rec. H.222.0 | ISO/IEC 13818-1 Reserved */
} GstMpegTsDescriptorType;

/**
 * GstMpegTsMiscDescriptorType:
 *
 * The type of #GstMpegTsDescriptor
 *
 * These values correspond to miscellaneous descriptor types that are
 * not yet identified from known specifications.
 */
typedef enum {
  /* 0x80 - 0xFE are user defined */
  GST_MTS_DESC_AC3_AUDIO_STREAM                 = 0x81,
  GST_MTS_DESC_DTG_LOGICAL_CHANNEL              = 0x83,    /* from DTG D-Book */
} GstMpegTsMiscDescriptorType;

/**
 * GstMpegTsATSCDescriptorType:
 *
 * These values correspond to the registered descriptor type from
 * the various ATSC specifications.
 *
 * Consult the relevant specifications for more details.
 */
typedef enum {
  /* ATSC A/65 2009 */
  GST_MTS_DESC_ATSC_STUFFING                    = 0x80,
  GST_MTS_DESC_ATSC_AC3                         = 0x83,
  GST_MTS_DESC_ATSC_CAPTION_SERVICE             = 0x86,
  GST_MTS_DESC_ATSC_CONTENT_ADVISORY            = 0x87,
  GST_MTS_DESC_ATSC_EXTENDED_CHANNEL_NAME       = 0xA0,
  GST_MTS_DESC_ATSC_SERVICE_LOCATION            = 0xA1,
  GST_MTS_DESC_ATSC_TIME_SHIFTED_SERVICE        = 0xA2,
  GST_MTS_DESC_ATSC_COMPONENT_NAME              = 0xA3,
  GST_MTS_DESC_ATSC_DCC_DEPARTING_REQUEST       = 0xA8,
  GST_MTS_DESC_ATSC_DCC_ARRIVING_REQUEST        = 0xA9,
  GST_MTS_DESC_ATSC_REDISTRIBUTION_CONTROL      = 0xAA,
  GST_MTS_DESC_ATSC_GENRE                       = 0xAB,
  GST_MTS_DESC_ATSC_PRIVATE_INFORMATION         = 0xAD,

  /* ATSC A/53:3 2009 */
  GST_MTS_DESC_ATSC_ENHANCED_SIGNALING          = 0xB2,

  /* ATSC A/90 */
  GST_MTS_DESC_ATSC_DATA_SERVICE                = 0xA4,
  GST_MTS_DESC_ATSC_PID_COUNT                   = 0xA5,
  GST_MTS_DESC_ATSC_DOWNLOAD_DESCRIPTOR         = 0xA6,
  GST_MTS_DESC_ATSC_MULTIPROTOCOL_ENCAPSULATION = 0xA7,
  GST_MTS_DESC_ATSC_MODULE_LINK                 = 0xB4,
  GST_MTS_DESC_ATSC_CRC32                       = 0xB5,
  GST_MTS_DESC_ATSC_GROUP_LINK                  = 0xB8,
} GstMpegTsATSCDescriptorType;

/**
 * GstMpegTsISDBDescriptorType:
 *
 * These values correspond to the registered descriptor type from
 * the various ISDB specifications.
 *
 * Consult the relevant specifications for more details.
 */
typedef enum {
  /* ISDB ARIB B10 v4.6 */
  GST_MTS_DESC_ISDB_HIERARCHICAL_TRANSMISSION   = 0xC0,
  GST_MTS_DESC_ISDB_DIGITAL_COPY_CONTROL        = 0xC1,
  GST_MTS_DESC_ISDB_NETWORK_IDENTIFICATION      = 0xC2,
  GST_MTS_DESC_ISDB_PARTIAL_TS_TIME             = 0xc3,
  GST_MTS_DESC_ISDB_AUDIO_COMPONENT             = 0xc4,
  GST_MTS_DESC_ISDB_HYPERLINK                   = 0xc5,
  GST_MTS_DESC_ISDB_TARGET_REGION               = 0xc6,
  GST_MTS_DESC_ISDB_DATA_CONTENT                = 0xc7,
  GST_MTS_DESC_ISDB_VIDEO_DECODE_CONTROL        = 0xc8,
  GST_MTS_DESC_ISDB_DOWNLOAD_CONTENT            = 0xc9,
  GST_MTS_DESC_ISDB_CA_EMM_TS                   = 0xca,
  GST_MTS_DESC_ISDB_CA_CONTRACT_INFORMATION     = 0xcb,
  GST_MTS_DESC_ISDB_CA_SERVICE                  = 0xcc,
  GST_MTS_DESC_ISDB_TS_INFORMATION              = 0xcd,
  GST_MTS_DESC_ISDB_EXTENDED_BROADCASTER        = 0xce,
  GST_MTS_DESC_ISDB_LOGO_TRANSMISSION           = 0xcf,
  GST_MTS_DESC_ISDB_BASIC_LOCAL_EVENT           = 0xd0,
  GST_MTS_DESC_ISDB_REFERENCE                   = 0xd1,
  GST_MTS_DESC_ISDB_NODE_RELATION               = 0xd2,
  GST_MTS_DESC_ISDB_SHORT_NODE_INFORMATION      = 0xd3,
  GST_MTS_DESC_ISDB_STC_REFERENCE               = 0xd4,
  GST_MTS_DESC_ISDB_SERIES                      = 0xd5,
  GST_MTS_DESC_ISDB_EVENT_GROUP                 = 0xd6,
  GST_MTS_DESC_ISDB_SI_PARAMETER                = 0xd7,
  GST_MTS_DESC_ISDB_BROADCASTER_NAME            = 0xd8,
  GST_MTS_DESC_ISDB_COMPONENT_GROUP             = 0xd9,
  GST_MTS_DESC_ISDB_SI_PRIME_TS                 = 0xda,
  GST_MTS_DESC_ISDB_BOARD_INFORMATION           = 0xdb,
  GST_MTS_DESC_ISDB_LDT_LINKAGE                 = 0xdc,
  GST_MTS_DESC_ISDB_CONNECTED_TRANSMISSION      = 0xdd,
  GST_MTS_DESC_ISDB_CONTENT_AVAILABILITY        = 0xde,
  /* ... */
  GST_MTS_DESC_ISDB_SERVICE_GROUP               = 0xe0
  
} GstMpegTsISDBDescriptorType;

typedef struct _GstMpegTsDescriptor GstMpegTsDescriptor;

#define GST_TYPE_MPEGTS_DESCRIPTOR (gst_mpegts_descriptor_get_type())
GType gst_mpegts_descriptor_get_type (void);

/**
 * GstMpegTsDescriptor:
 * @tag: the type of descriptor
 * @tag_extension: the extended type (if @descriptor_tag is 0x7f)
 * @length: the length of the descriptor content (excluding tag/length field)
 * @data: the full descriptor data (including tag, extension, length). The first
 * two bytes are the @tag and @tag_extension.
 *
 * Mpeg-TS descriptor (ISO/IEC 13818-1).
 */
struct _GstMpegTsDescriptor
{
  guint8 tag;
  guint8 tag_extension;
  guint8 length;
  const guint8 *data;
};

GPtrArray *gst_mpegts_parse_descriptors (guint8 * buffer, gsize buf_len);

const GstMpegTsDescriptor * gst_mpegts_find_descriptor (GPtrArray *descriptors,
							guint8 tag);

/* GST_MTS_DESC_ISO_639_LANGUAGE (0x0A) */
/**
 * GstMpegTsISO639AudioType:
 *
 * Type of audio streams
 *
 * Defined in ITU H.222.0 Table 2-60
 */
typedef enum {
  GST_MPEGTS_AUDIO_TYPE_UNDEFINED = 0,
  GST_MPEGTS_AUDIO_TYPE_CLEAN_EFFECTS,
  GST_MPEGTS_AUDIO_TYPE_HEARING_IMPAIRED,
  GST_MPEGTS_AUDIO_TYPE_VISUAL_IMPAIRED_COMMENTARY
} GstMpegTsIso639AudioType;

typedef struct _GstMpegTsISO639LanguageDescriptor GstMpegTsISO639LanguageDescriptor;
struct _GstMpegTsISO639LanguageDescriptor
{
  guint                    nb_language;
  gchar                    language[64][3];
  GstMpegTsIso639AudioType audio_type[64];
};

gboolean gst_mpegts_descriptor_parse_iso_639_language (const GstMpegTsDescriptor *descriptor,
						       GstMpegTsISO639LanguageDescriptor *res);
gboolean gst_mpegts_descriptor_parse_iso_639_language_idx (const GstMpegTsDescriptor *descriptor,
                                                           guint idx, gchar (*lang)[4],
                                                           GstMpegTsIso639AudioType *audio_type);
guint gst_mpegts_descriptor_parse_iso_639_language_nb (const GstMpegTsDescriptor *descriptor);



/* GST_MTS_DESC_DTG_LOGICAL_CHANNEL (0x83) */
typedef struct _GstMpegTsLogicalChannelDescriptor GstMpegTsLogicalChannelDescriptor;
typedef struct _GstMpegTsLogicalChannel GstMpegTsLogicalChannel;

struct _GstMpegTsLogicalChannel
{
  guint16   service_id;
  gboolean  visible_service;
  guint16   logical_channel_number;
};

struct _GstMpegTsLogicalChannelDescriptor
{
  guint                   nb_channels;
  GstMpegTsLogicalChannel channels[64];
};

/* FIXME : Maybe make two methods. One for getting the number of channels,
 * and the other for getting the content for one channel ? */
gboolean
gst_mpegts_descriptor_parse_logical_channel (const GstMpegTsDescriptor *descriptor,
					     GstMpegTsLogicalChannelDescriptor *res);

G_END_DECLS

#endif				/* GST_MPEGTS_DESCRIPTOR_H */