| /* | |
| * Copyright (C) 2016 foo86 | |
| * | |
| * This file is part of FFmpeg. | |
| * | |
| * FFmpeg is free software; you can redistribute it and/or | |
| * modify it under the terms of the GNU Lesser General Public | |
| * License as published by the Free Software Foundation; either | |
| * version 2.1 of the License, or (at your option) any later version. | |
| * | |
| * FFmpeg 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 | |
| * Lesser General Public License for more details. | |
| * | |
| * You should have received a copy of the GNU Lesser General Public | |
| * License along with FFmpeg; if not, write to the Free Software | |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| */ | |
| typedef struct DCAExssAsset { | |
| int asset_offset; ///< Offset to asset data from start of substream | |
| int asset_size; ///< Size of encoded asset data | |
| int asset_index; ///< Audio asset identifier | |
| int pcm_bit_res; ///< PCM bit resolution | |
| int max_sample_rate; ///< Maximum sample rate | |
| int nchannels_total; ///< Total number of channels | |
| int one_to_one_map_ch_to_spkr; ///< One to one channel to speaker mapping flag | |
| int embedded_stereo; ///< Embedded stereo flag | |
| int embedded_6ch; ///< Embedded 6 channels flag | |
| int spkr_mask_enabled; ///< Speaker mask enabled flag | |
| int spkr_mask; ///< Loudspeaker activity mask | |
| int representation_type; ///< Representation type | |
| int coding_mode; ///< Coding mode for the asset | |
| int extension_mask; ///< Coding components used in asset | |
| int core_offset; ///< Offset to core component from start of substream | |
| int core_size; ///< Size of core component in extension substream | |
| int xbr_offset; ///< Offset to XBR extension from start of substream | |
| int xbr_size; ///< Size of XBR extension in extension substream | |
| int xxch_offset; ///< Offset to XXCH extension from start of substream | |
| int xxch_size; ///< Size of XXCH extension in extension substream | |
| int x96_offset; ///< Offset to X96 extension from start of substream | |
| int x96_size; ///< Size of X96 extension in extension substream | |
| int lbr_offset; ///< Offset to LBR component from start of substream | |
| int lbr_size; ///< Size of LBR component in extension substream | |
| int xll_offset; ///< Offset to XLL data from start of substream | |
| int xll_size; ///< Size of XLL data in extension substream | |
| int xll_sync_present; ///< XLL sync word present flag | |
| int xll_delay_nframes; ///< Initial XLL decoding delay in frames | |
| int xll_sync_offset; ///< Number of bytes offset to XLL sync | |
| int hd_stream_id; ///< DTS-HD stream ID | |
| } DCAExssAsset; | |
| typedef struct DCAExssParser { | |
| AVCodecContext *avctx; | |
| GetBitContext gb; | |
| int exss_index; ///< Extension substream index | |
| int exss_size_nbits; ///< Number of bits for extension substream size | |
| int exss_size; ///< Number of bytes of extension substream | |
| int static_fields_present; ///< Per stream static fields presence flag | |
| int npresents; ///< Number of defined audio presentations | |
| int nassets; ///< Number of audio assets in extension substream | |
| int mix_metadata_enabled; ///< Mixing metadata enable flag | |
| int nmixoutconfigs; ///< Number of mixing configurations | |
| int nmixoutchs[4]; ///< Speaker layout mask for mixer output channels | |
| DCAExssAsset assets[1]; ///< Audio asset descriptors | |
| } DCAExssParser; | |
| int ff_dca_exss_parse(DCAExssParser *s, const uint8_t *data, int size); | |