codecs/dts.h

   1 /*****************************************************************************
   2  * dts.h:
   3  *****************************************************************************
   4  * Copyright (C) 2012-2015 L-SMASH project
   5  *
   6  * Authors: Yusuke Nakamura <muken.the.vfrmaniac@gmail.com>
   7  *
   8  * Permission to use, copy, modify, and/or distribute this software for any
   9  * purpose with or without fee is hereby granted, provided that the above
  10  * copyright notice and this permission notice appear in all copies.
  11  *
  12  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  13  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  14  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  15  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  16  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  17  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  18  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  19  *****************************************************************************/
  20
  21 /* This file is available under an ISC license. */
  22
  23 #define DTS_MAX_CORE_SIZE 16384
  24 #define DTS_MAX_EXSS_SIZE 32768
  25 #define DTS_MAX_NUM_EXSS      4 /* the maximum number of extension substreams */
  26
  27 typedef enum
  28 {
  29     DTS_SUBSTREAM_TYPE_NONE      = 0,
  30     DTS_SUBSTREAM_TYPE_CORE      = 1,
  31     DTS_SUBSTREAM_TYPE_EXTENSION = 2,
  32 } dts_substream_type;
  33
  34 typedef struct
  35 {
  36     uint16_t size;
  37     uint16_t channel_layout;
  38     uint8_t  lower_planes;      /* CL, LL and RL */
  39 } dts_xxch_info_t;
  40
  41 typedef struct
  42 {
  43     uint32_t sampling_frequency;
  44     uint32_t frame_duration;
  45     uint16_t frame_size;
  46     uint16_t channel_layout;
  47     uint8_t  channel_arrangement;
  48     uint8_t  extension_audio_descriptor;
  49     uint8_t  pcm_resolution;
  50     dts_xxch_info_t xxch;
  51 } dts_core_info_t;
  52
  53 typedef struct
  54 {
  55     uint16_t size;
  56     uint16_t channel_layout;
  57     uint32_t sampling_frequency;
  58     uint32_t frame_duration;
  59     uint8_t  pcm_resolution;
  60     uint8_t  stereo_downmix;
  61     uint8_t  lower_planes;      /* CL, LL and RL */
  62 } dts_xll_info_t;
  63
  64 typedef struct
  65 {
  66     uint16_t size;
  67     uint16_t channel_layout;
  68     uint32_t sampling_frequency;
  69     uint32_t frame_duration;
  70     uint8_t  stereo_downmix;
  71     uint8_t  lfe_present;
  72     uint8_t  duration_modifier;
  73     uint8_t  sample_size;
  74 } dts_lbr_info_t;
  75
  76 typedef struct
  77 {
  78     uint32_t                     size;
  79     uint16_t                     channel_layout;
  80     uint8_t                      bOne2OneMapChannels2Speakers;
  81     uint8_t                      nuRepresentationType;
  82     uint8_t                      nuCodingMode;
  83     lsmash_dts_construction_flag nuCoreExtensionMask;
  84     dts_core_info_t              core;
  85     dts_xll_info_t               xll;
  86     dts_lbr_info_t               lbr;
  87     uint16_t                     xbr_size;
  88     uint16_t                     x96_size;
  89     uint16_t                     aux_size;
  90 } dts_audio_asset_t;
  91
  92 typedef struct
  93 {
  94     uint32_t sampling_frequency;
  95     uint32_t frame_duration;
  96     uint8_t  nuBits4ExSSFsize;
  97     uint8_t  bStaticFieldsPresent;
  98     uint8_t  bMixMetadataEnbl;
  99     uint8_t  nuNumMixOutConfigs;
 100     uint8_t  nNumMixOutCh[4];
 101     uint8_t  nuNumAudioPresnt;
 102     uint8_t  nuNumAssets;
 103     uint8_t  nuActiveExSSMask[8];
 104     uint8_t  nuActiveAssetMask[8][4];
 105     uint8_t  bBcCorePresent[8];
 106     uint8_t  nuBcCoreExtSSIndex[8];
 107     uint8_t  nuBcCoreAssetIndex[8];
 108     uint8_t  stereo_downmix;
 109     uint8_t  bit_resolution;
 110     dts_audio_asset_t asset[8];
 111 } dts_extension_info_t;
 112
 113 typedef struct
 114 {
 115     dts_substream_type               substream_type;
 116     lsmash_dts_construction_flag     flags;
 117     lsmash_dts_specific_parameters_t ddts_param;
 118     dts_core_info_t                  core;      /* core component and its extensions in core substream */
 119     dts_extension_info_t             exss[4];   /* extension substreams */
 120     uint8_t  ddts_param_initialized;
 121     uint8_t  exss_index;
 122     uint8_t  exss_count;
 123     uint32_t frame_duration;
 124     uint32_t frame_size;        /* size of substream */
 125     lsmash_bits_t *bits;
 126 } dts_info_t;
 127
 128 void dts_setup_parser( dts_info_t *info );
 129 int dts_parse_core_substream( dts_info_t *info );
 130 int dts_parse_extension_substream( dts_info_t *info );
 131 int dts_get_max_channel_count( dts_info_t *info );
 132 dts_substream_type dts_get_substream_type( dts_info_t *info );
 133 int dts_get_exss_index( dts_info_t *info, uint8_t *exss_index );
 134 void dts_update_specific_param( dts_info_t *info );