aac5773f
 hucm
功能基本完成，接口待打磨
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/*
* 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
*/
#ifndef AVCODEC_DCA_EXSS_H
#define AVCODEC_DCA_EXSS_H
#include "libavutil/common.h"
#include "avcodec.h"
#include "get_bits.h"
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);
#endif
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