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 <stdint.h> 25 26#include "avcodec.h" 27#include "get_bits.h" 28 29typedef 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 71typedef 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 90int ff_dca_exss_parse(DCAExssParser *s, const uint8_t *data, int size); 91 92#endif 93