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gstreamer/gst/mpegtsdemux/gstmpegdesc.h
Edward Hervey edd69b2989 tsdemux: Add more AC3 detection cases 
ATSC ac3 streams are always guaranteed to be AC3 if EAC3 descriptor
is not present
If stream registration id is 'AC-3' then it's also guaranteed to be AC3.
Finally if AC3 descriptor is present it's guaranteed to be AC3.

Only silences a warning, but still.
2013-07-29 09:42:11 +02:00

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/*
*
* 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.
*
* The Original Code is 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_MPEG_DESC_H__
#define __GST_MPEG_DESC_H__
#include <glib.h>
/* Others */
/* 0xFF is forbidden */
/* common for all descriptors */
#define DESC_TAG(desc) (desc[0])
#define DESC_LENGTH(desc) (desc[1])
/* video_stream_descriptor */
#define DESC_VIDEO_STREAM_multiple_framerate_flag(desc) (((desc)[2] & 0x80) == 0x80)
#define DESC_VIDEO_STREAM_frame_rate_code(desc) (((desc)[2] & 0x38) >> 3)
#define DESC_VIDEO_STREAM_MPEG_1_only_flag(desc) (((desc)[2] & 0x04) == 0x04)
#define DESC_VIDEO_STREAM_constrained_parameter_flag(desc) (((desc)[2] & 0x02) == 0x02)
#define DESC_VIDEO_STREAM_still_picture_flag(desc) (((desc)[2] & 0x01) == 0x01)
/* if (MPEG_1_only_flag == 1) */
#define DESC_VIDEO_STREAM_profile_and_level_indication(desc) ((desc)[3])
#define DESC_VIDEO_STREAM_chroma_format(desc) (((desc)[4] & 0xc0) >> 6)
#define DESC_VIDEO_STREAM_frame_rate_extension_flag(desc) (((desc)[4] & 0x20) == 0x20)
/* audio_stream_descriptor */
#define DESC_AUDIO_STREAM_free_format_flag(desc) (((desc)[2] & 0x80) == 0x80)
#define DESC_AUDIO_STREAM_ID(desc) (((desc)[2] & 0x40) == 0x40)
#define DESC_AUDIO_STREAM_layer(desc) (((desc)[2] & 0x30) >> 4)
#define DESC_AUDIO_STREAM_variable_rate_audio_indicator(desc) (((desc)[2] & 0x08) == 0x08)
/* hierarchy_descriptor */
#define DESC_HIERARCHY_hierarchy_type(desc) (((desc)[2] & 0x0f))
#define DESC_HIERARCHY_hierarchy_layer_index(desc) (((desc)[3] & 0x3f))
#define DESC_HIERARCHY_hierarchy_embedded_layer_index(desc) (((desc)[4] & 0x3f))
#define DESC_HIERARCHY_hierarchy_channel(desc) (((desc)[5] & 0x3f))
/* registration_descriptor */
#define DESC_REGISTRATION_format_identifier(desc) (GST_READ_UINT32_BE ((desc)+2))
#define DESC_REGISTRATION_additional_ident_info_len(desc) ((desc)[1] - 4)
#define DESC_REGISTRATION_additional_ident_info(desc) (&(desc)[6])
/* data_stream_alignment_descriptor */
#define DESC_DATA_STREAM_ALIGNMENT_alignment_type(desc) ((desc)[2])
/* target_background_grid_descriptor */
#define DESC_TARGET_BACKGROUND_GRID_horizontal_size(desc) (GST_READ_UINT16_BE ((desc)+2) >> 2)
#define DESC_TARGET_BACKGROUND_GRID_vertical_size(desc) ((GST_READ_UINT32_BE ((desc)+2) & 0x0003fff0) >> 4)
#define DESC_TARGET_BACKGROUND_GRID_aspect_ratio_information(desc) ((desc)[5] & 0x0f)
/* video_window_descriptor */
#define DESC_VIDEO_WINDOW_horizontal_offset(desc) (GST_READ_UINT16_BE ((desc)+2) >> 2)
#define DESC_VIDEO_WINDOW_vertical_offset(desc) ((GST_READ_UINT32_BE ((desc)+2) & 0x0003fff0) >> 4)
#define DESC_VIDEO_WINDOW_window_priority(desc) ((desc)[5] & 0x0f)
/* CA_descriptor */
#define DESC_CA_system_ID(desc) (GST_READ_UINT16_BE ((desc)+2))
#define DESC_CA_PID(desc) (GST_READ_UINT16_BE ((desc)+2) & 0x1fff)
/* ISO_639_language_descriptor */
#define DESC_ISO_639_LANGUAGE_codes_n(desc) ((desc[1]) >> 2)
#define DESC_ISO_639_LANGUAGE_language_code_nth(desc,i) (&(desc[2 + (4*i)]))
#define DESC_ISO_639_LANGUAGE_audio_type_nth(desc,i) ((desc)[5 + (4*i)])
/* system_clock_descriptor */
#define DESC_SYSTEM_CLOCK_external_clock_reference_indicator(desc) (((desc)[2] & 0x80) == 0x80)
#define DESC_SYSTEM_CLOCK_clock_accuracy_integer(desc) ((desc)[2] & 0x3f)
#define DESC_SYSTEM_CLOCK_clock_accuracy_exponent(desc) (((desc)[3] & 0xe0) >> 5)
/* multiplex_buffer_utilization_descriptor */
#define DESC_MULTIPLEX_BUFFER_UTILISATION_bound_valid_flag(desc) (((desc)[2] & 0x80) == 0x80)
#define DESC_MULTIPLEX_BUFFER_UTILISATION_LTW_offset_lower_bound(desc) (GST_READ_UINT16_BE ((desc)+2) & 0x7fff)
#define DESC_MULTIPLEX_BUFFER_UTILISATION_LTW_offset_upper_bound(desc) (GST_READ_UINT16_BE ((desc)+4) & 0x7fff)
/* copyright_descriptor */
#define DESC_COPYRIGHT_copyright_identifier(desc) (GST_READ_UINT32_BE ((desc)+2))
#define DESC_COPYRIGHT_additional_copyright_info_len(desc) ((desc)[1] - 4)
#define DESC_COPYRIGHT_additional_copyright_info(desc) (&(desc)[6])
/* maximum_bitrate_descriptor */
#define DESC_MAXIMUM_BITRAT_maximum_bitrate(desc) (((((guint32)desc[2]) & 0x3f) << 16) | \
GST_READ_UINT16_BE ((desc)+3))
/* private_data_indicator_descriptor */
#define DESC_PRIVATE_DATA_INDICATOR_indicator(desc) (GST_READ_UINT32_BE(&desc[2]))
/* smoothing_buffer_descriptor */
#define DESC_SMOOTHING_BUFFER_sb_leak_rate(desc) (((((guint32)desc[2]) & 0x3f) << 16) | \
GST_READ_UINT16_BE ((desc)+3))
#define DESC_SMOOTHING_BUFFER_sb_size(desc) (((((guint32)desc[5]) & 0x3f) << 16) | \
GST_READ_UINT16_BE ((desc)+6))
/* STD_descriptor */
#define DESC_STD_leak_valid_flag(desc) (((desc)[2] & 0x01) == 0x01)
/* ibp_descriptor */
#define DESC_IBP_closed_gop_flag(desc) (((desc)[2] & 0x80) == 0x80)
#define DESC_IBP_identical_gop_flag(desc) (((desc)[2] & 0x40) == 0x40)
#define DESC_IBP_max_gop_length(desc) (GST_READ_UINT16_BE ((desc)+6) & 0x3fff)
/* time_code descriptor */
#define DESC_TIMECODE_video_pid(desc) (GST_READ_UINT16_BE ((desc) + 2) & 0x1fff)
/* Stream identifier descriptor */
#define DESC_DVB_STREAM_IDENTIFIER_component_tag(desc) (desc[2])
/* DVB Network Name descriptor */
#define DESC_DVB_NETWORK_NAME_length(desc) (GST_READ_UINT8((desc)+1))
#define DESC_DVB_NETWORK_NAME_text(desc) (desc+2)
/* DVB Service Descriptor */
#define DESC_DVB_SERVICE_type(desc) (desc[2])
#define DESC_DVB_SERVICE_provider_name_length(desc) (desc[3])
#define DESC_DVB_SERVICE_provider_name_text(desc) (desc+4)
#define DESC_DVB_SERVICE_name_length(desc) (desc[4 + DESC_DVB_SERVICE_provider_name_length(desc)])
#define DESC_DVB_SERVICE_name_text(desc) (desc + 5 + DESC_DVB_SERVICE_provider_name_length(desc))
/* DVB Component Descriptor */
#define DESC_DVB_COMPONENT_stream_content(desc) (desc[2] & 0x0F)
#define DESC_DVB_COMPONENT_type(desc) (desc[3])
#define DESC_DVB_COMPONENT_tag(desc) (desc[4])
#define DESC_DVB_COMPONENT_language(desc) (desc + 5)
/* DVB Bouquet Name Descriptor */
#define DESC_DVB_BOUQUET_NAME_text(desc) (desc + 2)
/* DVB Short Event Descriptor */
#define DESC_DVB_SHORT_EVENT_name_text(desc) (desc + 6)
#define DESC_DVB_SHORT_EVENT_name_length(desc) (desc[5])
#define DESC_DVB_SHORT_EVENT_description_text(desc) (desc + 6 + DESC_DVB_SHORT_EVENT_name_length(desc) + 1)
#define DESC_DVB_SHORT_EVENT_description_length(desc) (desc[6 + DESC_DVB_SHORT_EVENT_name_length(desc)])
/* DVB Extended Event Descriptor */
#define DESC_DVB_EXTENDED_EVENT_descriptor_number(desc) ((desc[2] & 0xF0) >> 4)
#define DESC_DVB_EXTENDED_EVENT_last_descriptor_number(desc) (desc[2] & 0x0F)
#define DESC_DVB_EXTENDED_EVENT_iso639_language_code(desc) (desc + 3)
#define DESC_DVB_EXTENDED_EVENT_items_length(desc) (desc[6])
#define DESC_DVB_EXTENDED_EVENT_items(desc) (desc + 7)
#define DESC_DVB_EXTENDED_EVENT_text_length(desc) (desc[7 + DESC_DVB_EXTENDED_EVENT_items_length(desc)])
#define DESC_DVB_EXTENDED_EVENT_text(desc) (desc + 7 + DESC_DVB_EXTENDED_EVENT_items_length(desc) + 1)
/* DVB Satellite Delivery System Descriptor */
#define DESC_DVB_SATELLITE_DELIVERY_SYSTEM_frequency(desc) (desc + 2)
#define DESC_DVB_SATELLITE_DELIVERY_SYSTEM_orbital_position(desc) (desc + 6)
#define DESC_DVB_SATELLITE_DELIVERY_SYSTEM_west_east_flag(desc) ((desc[8] & 0x80) == 0x80)
#define DESC_DVB_SATELLITE_DELIVERY_SYSTEM_polarization(desc) ((desc[8] >> 5) & 0x3)
#define DESC_DVB_SATELLITE_DELIVERY_SYSTEM_modulation(desc) (desc[8] & 0x3)
#define DESC_DVB_SATELLITE_DELIVERY_SYSTEM_symbol_rate(desc) (desc + 9)
#define DESC_DVB_SATELLITE_DELIVERY_SYSTEM_fec_inner(desc) (desc[12] & 0x0F)
/* DVB Terrestrial Delivery System Descriptor */
#define DESC_DVB_TERRESTRIAL_DELIVERY_SYSTEM_frequency(desc) (GST_READ_UINT32_BE((desc) + 2))
#define DESC_DVB_TERRESTRIAL_DELIVERY_SYSTEM_bandwidth(desc) ((desc[6] >> 5) & 0x7)
#define DESC_DVB_TERRESTRIAL_DELIVERY_SYSTEM_constellation(desc) ((desc[7] >> 6) & 0x3)
#define DESC_DVB_TERRESTRIAL_DELIVERY_SYSTEM_hierarchy(desc) ((desc[7] >> 3) & 0x7)
#define DESC_DVB_TERRESTRIAL_DELIVERY_SYSTEM_code_rate_hp(desc) (desc[7] & 0x7)
#define DESC_DVB_TERRESTRIAL_DELIVERY_SYSTEM_code_rate_lp(desc) ((desc[8] >> 5) & 0x7)
#define DESC_DVB_TERRESTRIAL_DELIVERY_SYSTEM_guard_interval(desc) ((desc[8] >> 3) & 0x3)
#define DESC_DVB_TERRESTRIAL_DELIVERY_SYSTEM_transmission_mode(desc) ((desc[8] >> 1) & 0x3)
#define DESC_DVB_TERRESTRIAL_DELIVERY_SYSTEM_other_frequency(desc) ((desc[8] & 0x01) == 0x01)
/* DVB Cable Delivery System Descriptor */
#define DESC_DVB_CABLE_DELIVERY_SYSTEM_frequency(desc) (desc + 2)
#define DESC_DVB_CABLE_DELIVERY_SYSTEM_fec_outer(desc) (desc[7] & 0x0F)
#define DESC_DVB_CABLE_DELIVERY_SYSTEM_modulation(desc) (desc[8])
#define DESC_DVB_CABLE_DELIVERY_SYSTEM_symbol_rate(desc) (desc + 9)
#define DESC_DVB_CABLE_DELIVERY_SYSTEM_fec_inner(desc) (desc[12] & 0x0F)
/* DVB Data Broadcast Descriptor */
#define DESC_DVB_DATA_BROADCAST_data_broadcast_id(desc) (GST_READ_UINT16_BE((desc) + 2))
#define DESC_DVB_DATA_BROADCAST_component_tag(desc) (desc[4])
#define DESC_DVB_DATA_BROADCAST_selector_length(desc) (desc[5])
#define DESC_DVB_DATA_BROADCAST_selector(desc) (desc + 6)
#define DESC_DVB_DATA_BROADCAST_iso639_language_code(desc) (desc + 6 + DESC_DVB_DATA_BROADCAST_selector_length(desc))
#define DESC_DVB_DATA_BROADCAST_text_length(desc) (desc + 9 + DESC_DVB_DATA_BROADCAST_selector_length(desc))
#define DESC_DVB_DATA_BROADCAST_text(desc) (desc + 10 + DESC_DVB_DATA_BROADCAST_selector_length(desc))
/* DVB Data Broadcast Id Descriptor */
#define DESC_DVB_DATA_BROADCAST_ID_data_broadcast_id(desc) (GST_READ_UINT16_BE((desc) + 2))
#define DESC_DVB_DATA_BROADCAST_ID_id_selector_byte(desc) (desc + 4)
/* DVB Carousel Identifier Descriptor */
#define DESC_DVB_CAROUSEL_IDENTIFIER_carousel_id(desc) (GST_READ_UINT32_BE((desc) + 2))
/* AC3_audio_stream_descriptor */
#define DESC_AC_AUDIO_STREAM_bsid(desc) ((desc)[2] & 0x1f)
/* FIXME : Move list of well know registration ids to an enum
* in the mpegts library.
*
* See http://www.smpte-ra.org/mpegreg/mpegreg.html for a full list
* */
/* registration_descriptor format IDs */
#define DRF_ID_HDMV 0x48444d56
#define DRF_ID_VC1 0x56432D31 /* defined in RP227 */
#define DRF_ID_DTS1 0x44545331
#define DRF_ID_DTS2 0x44545332
#define DRF_ID_DTS3 0x44545333
#define DRF_ID_S302M 0x42535344
#define DRF_ID_TSHV 0x54534856
#define DRF_ID_AC3 0x41432d33
#define DRF_ID_GA94 0x47413934
#define DRF_ID_CUEI 0x43554549
#endif /* __GST_MPEG_DESC_H__ */
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