descriptors.h

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/*
 * Copyright (c) 2011-2012 - Mauro Carvalho Chehab
 * Copyright (c) 2012-2014 - Andre Roth <neolynx@gmail.com>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation version 2
 * of the License.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 * Or, point your browser to http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 */

#ifndef _DESCRIPTORS_H
#define _DESCRIPTORS_H

#include <unistd.h>
#include <stdint.h>
#include <arpa/inet.h>

#define DVB_MAX_PAYLOAD_PACKET_SIZE 4096

#define DVB_CRC_SIZE 4


#ifndef _DOXYGEN
struct dvb_v5_fe_parms;
#endif

typedef void (*dvb_table_init_func)(struct dvb_v5_fe_parms *parms, const uint8_t *buf, ssize_t buflen, void **table);

extern const dvb_table_init_func dvb_table_initializers[256];

#ifndef _DOXYGEN
#define bswap16(b) do {\
        b = ntohs(b); \
} while (0)

#define bswap32(b) do {\
        b = ntohl(b); \
} while (0)

#define DVB_DESC_HEADER() \
        uint8_t type; \
        uint8_t length; \
        struct dvb_desc *next

#endif /* _DOXYGEN */

struct dvb_desc {
        DVB_DESC_HEADER();

        uint8_t data[];
} __attribute__((packed));

#ifndef _DOXYGEN

#define dvb_desc_foreach( _desc, _tbl ) \
        for( struct dvb_desc *_desc = _tbl->descriptor; _desc; _desc = _desc->next ) \

#define dvb_desc_find(_struct, _desc, _tbl, _type) \
        for( _struct *_desc = (_struct *) _tbl->descriptor; _desc; _desc = (_struct *) _desc->next ) \
                if(_desc->type == _type) \

#endif /* _DOXYGEN */

#ifdef __cplusplus
extern "C" {
#endif

uint32_t dvb_bcd(uint32_t bcd);

void dvb_hexdump(struct dvb_v5_fe_parms *parms, const char *prefix,
                 const unsigned char *buf, int len);

int  dvb_desc_parse(struct dvb_v5_fe_parms *parms, const uint8_t *buf,
                    uint16_t buflen, struct dvb_desc **head_desc);

void dvb_desc_free (struct dvb_desc **list);

void dvb_desc_print(struct dvb_v5_fe_parms *parms, struct dvb_desc *desc);

#ifdef __cplusplus
}
#endif

typedef int (*dvb_desc_init_func) (struct dvb_v5_fe_parms *parms, const uint8_t *buf, struct dvb_desc *desc);

typedef void (*dvb_desc_print_func)(struct dvb_v5_fe_parms *parms, const struct dvb_desc *desc);

typedef void (*dvb_desc_free_func) (struct dvb_desc *desc);

struct dvb_descriptor {
        const char *name;
        dvb_desc_init_func init;
        dvb_desc_print_func print;
        dvb_desc_free_func free;
        ssize_t size;
};

extern const struct dvb_descriptor dvb_descriptors[];

enum descriptors {
        /* ISO/IEC 13818-1 */
        video_stream_descriptor                         = 0x02,
        audio_stream_descriptor                         = 0x03,
        hierarchy_descriptor                            = 0x04,
        registration_descriptor                         = 0x05,
        ds_alignment_descriptor                         = 0x06,
        target_background_grid_descriptor               = 0x07,
        video_window_descriptor                         = 0x08,
        conditional_access_descriptor                   = 0x09,
        iso639_language_descriptor                      = 0x0a,
        system_clock_descriptor                         = 0x0b,
        multiplex_buffer_utilization_descriptor         = 0x0c,
        copyright_descriptor                            = 0x0d,
        maximum_bitrate_descriptor                      = 0x0e,
        private_data_indicator_descriptor               = 0x0f,
        smoothing_buffer_descriptor                     = 0x10,
        std_descriptor                                  = 0x11,
        ibp_descriptor                                  = 0x12,

        mpeg4_video_descriptor                          = 0x1b,
        mpeg4_audio_descriptor                          = 0x1c,
        iod_descriptor                                  = 0x1d,
        sl_descriptor                                   = 0x1e,
        fmc_descriptor                                  = 0x1f,
        external_es_id_descriptor                       = 0x20,
        muxcode_descriptor                              = 0x21,
        fmxbuffersize_descriptor                        = 0x22,
        multiplexbuffer_descriptor                      = 0x23,
        content_labeling_descriptor                     = 0x24,
        metadata_pointer_descriptor                     = 0x25,
        metadata_descriptor                             = 0x26,
        metadata_std_descriptor                         = 0x27,
        AVC_video_descriptor                            = 0x28,
        ipmp_descriptor                                 = 0x29,
        AVC_timing_and_HRD_descriptor                   = 0x2a,
        mpeg2_aac_audio_descriptor                      = 0x2b,
        flexmux_timing_descriptor                       = 0x2c,

        /* ETSI EN 300 468 V1.11.1 (2010-04) */

        network_name_descriptor                         = 0x40,
        service_list_descriptor                         = 0x41,
        stuffing_descriptor                             = 0x42,
        satellite_delivery_system_descriptor            = 0x43,
        cable_delivery_system_descriptor                = 0x44,
        VBI_data_descriptor                             = 0x45,
        VBI_teletext_descriptor                         = 0x46,
        bouquet_name_descriptor                         = 0x47,
        service_descriptor                              = 0x48,
        country_availability_descriptor                 = 0x49,
        linkage_descriptor                              = 0x4a,
        NVOD_reference_descriptor                       = 0x4b,
        time_shifted_service_descriptor                 = 0x4c,
        short_event_descriptor                          = 0x4d,
        extended_event_descriptor                       = 0x4e,
        time_shifted_event_descriptor                   = 0x4f,
        component_descriptor                            = 0x50,
        mosaic_descriptor                               = 0x51,
        stream_identifier_descriptor                    = 0x52,
        CA_identifier_descriptor                        = 0x53,
        content_descriptor                              = 0x54,
        parental_rating_descriptor                      = 0x55,
        teletext_descriptor                             = 0x56,
        telephone_descriptor                            = 0x57,
        local_time_offset_descriptor                    = 0x58,
        subtitling_descriptor                           = 0x59,
        terrestrial_delivery_system_descriptor          = 0x5a,
        multilingual_network_name_descriptor            = 0x5b,
        multilingual_bouquet_name_descriptor            = 0x5c,
        multilingual_service_name_descriptor            = 0x5d,
        multilingual_component_descriptor               = 0x5e,
        private_data_specifier_descriptor               = 0x5f,
        service_move_descriptor                         = 0x60,
        short_smoothing_buffer_descriptor               = 0x61,
        frequency_list_descriptor                       = 0x62,
        partial_transport_stream_descriptor             = 0x63,
        data_broadcast_descriptor                       = 0x64,
        scrambling_descriptor                           = 0x65,
        data_broadcast_id_descriptor                    = 0x66,
        transport_stream_descriptor                     = 0x67,
        DSNG_descriptor                                 = 0x68,
        PDC_descriptor                                  = 0x69,
        AC_3_descriptor                                 = 0x6a,
        ancillary_data_descriptor                       = 0x6b,
        cell_list_descriptor                            = 0x6c,
        cell_frequency_link_descriptor                  = 0x6d,
        announcement_support_descriptor                 = 0x6e,
        application_signalling_descriptor               = 0x6f,
        adaptation_field_data_descriptor                = 0x70,
        service_identifier_descriptor                   = 0x71,
        service_availability_descriptor                 = 0x72,
        default_authority_descriptor                    = 0x73,
        related_content_descriptor                      = 0x74,
        TVA_id_descriptor                               = 0x75,
        content_identifier_descriptor                   = 0x76,
        time_slice_fec_identifier_descriptor            = 0x77,
        ECM_repetition_rate_descriptor                  = 0x78,
        S2_satellite_delivery_system_descriptor         = 0x79,
        enhanced_AC_3_descriptor                        = 0x7a,
        DTS_descriptor                                  = 0x7b,
        AAC_descriptor                                  = 0x7c,
        XAIT_location_descriptor                        = 0x7d,
        FTA_content_management_descriptor               = 0x7e,
        extension_descriptor                            = 0x7f,

        /* SCTE 35 2004 */
        CUE_identifier_descriptor                       = 0x8a,

        extended_channel_name                           = 0xa0,
        service_location                                = 0xa1,
        /* From http://www.etherguidesystems.com/Help/SDOs/ATSC/Semantics/Descriptors/Default.aspx */
        component_name_descriptor                       = 0xa3,

        /* From http://www.coolstf.com/tsreader/descriptors.html */
        logical_channel_number_descriptor               = 0x83,

        /* ISDB Descriptors, as defined on ABNT NBR 15603-1 2007 */

        carousel_id_descriptor                          = 0x13,
        association_tag_descriptor                      = 0x14,
        deferred_association_tags_descriptor            = 0x15,

        hierarchical_transmission_descriptor            = 0xc0,
        digital_copy_control_descriptor                 = 0xc1,
        network_identifier_descriptor                   = 0xc2,
        partial_transport_stream_time_descriptor        = 0xc3,
        audio_component_descriptor                      = 0xc4,
        hyperlink_descriptor                            = 0xc5,
        target_area_descriptor                          = 0xc6,
        data_contents_descriptor                        = 0xc7,
        video_decode_control_descriptor                 = 0xc8,
        download_content_descriptor                     = 0xc9,
        CA_EMM_TS_descriptor                            = 0xca,
        CA_contract_information_descriptor              = 0xcb,
        CA_service_descriptor                           = 0xcc,
        TS_Information_descriptior                      = 0xcd,
        extended_broadcaster_descriptor                 = 0xce,
        logo_transmission_descriptor                    = 0xcf,
        basic_local_event_descriptor                    = 0xd0,
        reference_descriptor                            = 0xd1,
        node_relation_descriptor                        = 0xd2,
        short_node_information_descriptor               = 0xd3,
        STC_reference_descriptor                        = 0xd4,
        series_descriptor                               = 0xd5,
        event_group_descriptor                          = 0xd6,
        SI_parameter_descriptor                         = 0xd7,
        broadcaster_Name_Descriptor                     = 0xd8,
        component_group_descriptor                      = 0xd9,
        SI_prime_TS_descriptor                          = 0xda,
        board_information_descriptor                    = 0xdb,
        LDT_linkage_descriptor                          = 0xdc,
        connected_transmission_descriptor               = 0xdd,
        content_availability_descriptor                 = 0xde,
        service_group_descriptor                        = 0xe0,
        carousel_compatible_composite_descriptor        = 0xf7,
        conditional_playback_descriptor                 = 0xf8,
        ISDBT_delivery_system_descriptor                = 0xfa,
        partial_reception_descriptor                    = 0xfb,
        emergency_information_descriptor                = 0xfc,
        data_component_descriptor                       = 0xfd,
        system_management_descriptor                    = 0xfe,

        /* ATSC descriptors - ATSC A/65:2009 spec */
        atsc_stuffing_descriptor                        = 0x80,
        atsc_ac3_audio_descriptor                       = 0x81,
        atsc_caption_service_descriptor                 = 0x86,
        atsc_content_advisory_descriptor                = 0x87,
        atsc_extended_channel_descriptor                = 0xa0,
        atsc_service_location_descriptor                = 0xa1,
        atsc_time_shifted_service_descriptor            = 0xa2,
        atsc_component_name_descriptor                  = 0xa3,
        atsc_DCC_departing_request_descriptor           = 0xa8,
        atsc_DCC_arriving_request_descriptor            = 0xa9,
        atsc_redistribution_control_descriptor          = 0xaa,
        atsc_ATSC_private_information_descriptor        = 0xad,
        atsc_genre_descriptor                           = 0xab,
};

/* Please see desc_extension.h for extension_descriptor types */

#endif