93 lines
4 KiB
C
93 lines
4 KiB
C
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/*
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* Copyright (C) 2016 foo86
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVCODEC_DCA_EXSS_H
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#define AVCODEC_DCA_EXSS_H
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#include "libavutil/common.h"
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#include "avcodec.h"
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#include "get_bits.h"
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typedef struct DCAExssAsset {
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int asset_offset; ///< Offset to asset data from start of substream
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int asset_size; ///< Size of encoded asset data
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int asset_index; ///< Audio asset identifier
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int pcm_bit_res; ///< PCM bit resolution
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int max_sample_rate; ///< Maximum sample rate
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int nchannels_total; ///< Total number of channels
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int one_to_one_map_ch_to_spkr; ///< One to one channel to speaker mapping flag
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int embedded_stereo; ///< Embedded stereo flag
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int embedded_6ch; ///< Embedded 6 channels flag
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int spkr_mask_enabled; ///< Speaker mask enabled flag
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int spkr_mask; ///< Loudspeaker activity mask
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int representation_type; ///< Representation type
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int coding_mode; ///< Coding mode for the asset
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int extension_mask; ///< Coding components used in asset
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int core_offset; ///< Offset to core component from start of substream
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int core_size; ///< Size of core component in extension substream
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int xbr_offset; ///< Offset to XBR extension from start of substream
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int xbr_size; ///< Size of XBR extension in extension substream
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int xxch_offset; ///< Offset to XXCH extension from start of substream
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int xxch_size; ///< Size of XXCH extension in extension substream
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int x96_offset; ///< Offset to X96 extension from start of substream
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int x96_size; ///< Size of X96 extension in extension substream
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int lbr_offset; ///< Offset to LBR component from start of substream
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int lbr_size; ///< Size of LBR component in extension substream
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int xll_offset; ///< Offset to XLL data from start of substream
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int xll_size; ///< Size of XLL data in extension substream
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int xll_sync_present; ///< XLL sync word present flag
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int xll_delay_nframes; ///< Initial XLL decoding delay in frames
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int xll_sync_offset; ///< Number of bytes offset to XLL sync
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int hd_stream_id; ///< DTS-HD stream ID
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} DCAExssAsset;
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typedef struct DCAExssParser {
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AVCodecContext *avctx;
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GetBitContext gb;
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int exss_index; ///< Extension substream index
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int exss_size_nbits; ///< Number of bits for extension substream size
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int exss_size; ///< Number of bytes of extension substream
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int static_fields_present; ///< Per stream static fields presence flag
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int npresents; ///< Number of defined audio presentations
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int nassets; ///< Number of audio assets in extension substream
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int mix_metadata_enabled; ///< Mixing metadata enable flag
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int nmixoutconfigs; ///< Number of mixing configurations
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int nmixoutchs[4]; ///< Speaker layout mask for mixer output channels
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DCAExssAsset assets[1]; ///< Audio asset descriptors
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} DCAExssParser;
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int ff_dca_exss_parse(DCAExssParser *s, const uint8_t *data, int size);
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#endif
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