2 * Copyright (C) 2016 foo86
4 * This file is part of FFmpeg.
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.
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.
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
21 #ifndef AVCODEC_DCA_EXSS_H
22 #define AVCODEC_DCA_EXSS_H
24 #include "libavutil/common.h"
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
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
44 int coding_mode; ///< Coding mode for the asset
45 int extension_mask; ///< Coding components used in asset
47 int core_offset; ///< Offset to core component from start of substream
48 int core_size; ///< Size of core component in extension substream
50 int xbr_offset; ///< Offset to XBR extension from start of substream
51 int xbr_size; ///< Size of XBR extension in extension substream
53 int xxch_offset; ///< Offset to XXCH extension from start of substream
54 int xxch_size; ///< Size of XXCH extension in extension substream
56 int x96_offset; ///< Offset to X96 extension from start of substream
57 int x96_size; ///< Size of X96 extension in extension substream
59 int lbr_offset; ///< Offset to LBR component from start of substream
60 int lbr_size; ///< Size of LBR component in extension substream
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
68 int hd_stream_id; ///< DTS-HD stream ID
71 typedef struct DCAExssParser {
72 AVCodecContext *avctx;
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
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
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
87 DCAExssAsset assets[1]; ///< Audio asset descriptors
90 int ff_dca_exss_parse(DCAExssParser *s, const uint8_t *data, int size);