blob: 208fae1b85a3c2fd72c33f89292e194a71f79747
| 1 | /* |
| 2 | * Copyright (C) 2016 foo86 |
| 3 | * |
| 4 | * This file is part of FFmpeg. |
| 5 | * |
| 6 | * FFmpeg is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU Lesser General Public |
| 8 | * License as published by the Free Software Foundation; either |
| 9 | * version 2.1 of the License, or (at your option) any later version. |
| 10 | * |
| 11 | * FFmpeg is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | * Lesser General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU Lesser General Public |
| 17 | * License along with FFmpeg; if not, write to the Free Software |
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 19 | */ |
| 20 | |
| 21 | #ifndef AVCODEC_DCA_EXSS_H |
| 22 | #define AVCODEC_DCA_EXSS_H |
| 23 | |
| 24 | #include "libavutil/common.h" |
| 25 | |
| 26 | #include "avcodec.h" |
| 27 | #include "get_bits.h" |
| 28 | |
| 29 | typedef struct DCAExssAsset { |
| 30 | int asset_offset; ///< Offset to asset data from start of substream |
| 31 | int asset_size; ///< Size of encoded asset data |
| 32 | int asset_index; ///< Audio asset identifier |
| 33 | |
| 34 | int pcm_bit_res; ///< PCM bit resolution |
| 35 | int max_sample_rate; ///< Maximum sample rate |
| 36 | int nchannels_total; ///< Total number of channels |
| 37 | int one_to_one_map_ch_to_spkr; ///< One to one channel to speaker mapping flag |
| 38 | int embedded_stereo; ///< Embedded stereo flag |
| 39 | int embedded_6ch; ///< Embedded 6 channels flag |
| 40 | int spkr_mask_enabled; ///< Speaker mask enabled flag |
| 41 | int spkr_mask; ///< Loudspeaker activity mask |
| 42 | int representation_type; ///< Representation type |
| 43 | |
| 44 | int coding_mode; ///< Coding mode for the asset |
| 45 | int extension_mask; ///< Coding components used in asset |
| 46 | |
| 47 | int core_offset; ///< Offset to core component from start of substream |
| 48 | int core_size; ///< Size of core component in extension substream |
| 49 | |
| 50 | int xbr_offset; ///< Offset to XBR extension from start of substream |
| 51 | int xbr_size; ///< Size of XBR extension in extension substream |
| 52 | |
| 53 | int xxch_offset; ///< Offset to XXCH extension from start of substream |
| 54 | int xxch_size; ///< Size of XXCH extension in extension substream |
| 55 | |
| 56 | int x96_offset; ///< Offset to X96 extension from start of substream |
| 57 | int x96_size; ///< Size of X96 extension in extension substream |
| 58 | |
| 59 | int lbr_offset; ///< Offset to LBR component from start of substream |
| 60 | int lbr_size; ///< Size of LBR component in extension substream |
| 61 | |
| 62 | int xll_offset; ///< Offset to XLL data from start of substream |
| 63 | int xll_size; ///< Size of XLL data in extension substream |
| 64 | int xll_sync_present; ///< XLL sync word present flag |
| 65 | int xll_delay_nframes; ///< Initial XLL decoding delay in frames |
| 66 | int xll_sync_offset; ///< Number of bytes offset to XLL sync |
| 67 | |
| 68 | int hd_stream_id; ///< DTS-HD stream ID |
| 69 | } DCAExssAsset; |
| 70 | |
| 71 | typedef struct DCAExssParser { |
| 72 | AVCodecContext *avctx; |
| 73 | GetBitContext gb; |
| 74 | |
| 75 | int exss_index; ///< Extension substream index |
| 76 | int exss_size_nbits; ///< Number of bits for extension substream size |
| 77 | int exss_size; ///< Number of bytes of extension substream |
| 78 | |
| 79 | int static_fields_present; ///< Per stream static fields presence flag |
| 80 | int npresents; ///< Number of defined audio presentations |
| 81 | int nassets; ///< Number of audio assets in extension substream |
| 82 | |
| 83 | int mix_metadata_enabled; ///< Mixing metadata enable flag |
| 84 | int nmixoutconfigs; ///< Number of mixing configurations |
| 85 | int nmixoutchs[4]; ///< Speaker layout mask for mixer output channels |
| 86 | |
| 87 | DCAExssAsset assets[1]; ///< Audio asset descriptors |
| 88 | } DCAExssParser; |
| 89 | |
| 90 | int ff_dca_exss_parse(DCAExssParser *s, const uint8_t *data, int size); |
| 91 | |
| 92 | #endif |
| 93 |