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| 4349 | Serge | 1 | /* |
| 2 | * MLP parser prototypes |
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| 3 | * Copyright (c) 2007 Ian Caulfield |
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| 4 | * |
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| 5 | * This file is part of FFmpeg. |
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| 6 | * |
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| 7 | * FFmpeg is free software; you can redistribute it and/or |
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| 8 | * modify it under the terms of the GNU Lesser General Public |
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| 9 | * License as published by the Free Software Foundation; either |
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| 10 | * version 2.1 of the License, or (at your option) any later version. |
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| 11 | * |
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| 12 | * FFmpeg is distributed in the hope that it will be useful, |
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 15 | * Lesser General Public License for more details. |
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| 16 | * |
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| 17 | * You should have received a copy of the GNU Lesser General Public |
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| 18 | * License along with FFmpeg; if not, write to the Free Software |
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| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 20 | */ |
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| 21 | |||
| 22 | /** |
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| 23 | * @file |
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| 24 | * MLP parser prototypes |
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| 25 | */ |
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| 26 | |||
| 27 | #ifndef AVCODEC_MLP_PARSER_H |
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| 28 | #define AVCODEC_MLP_PARSER_H |
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| 29 | |||
| 30 | #include "get_bits.h" |
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| 31 | |||
| 32 | typedef struct MLPHeaderInfo |
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| 33 | { |
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| 34 | int stream_type; ///< 0xBB for MLP, 0xBA for TrueHD |
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| 35 | |||
| 36 | int group1_bits; ///< The bit depth of the first substream |
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| 37 | int group2_bits; ///< Bit depth of the second substream (MLP only) |
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| 38 | |||
| 39 | int group1_samplerate; ///< Sample rate of first substream |
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| 40 | int group2_samplerate; ///< Sample rate of second substream (MLP only) |
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| 41 | |||
| 42 | int channel_arrangement; |
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| 43 | int channels_mlp; ///< Channel count for MLP streams |
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| 44 | int channels_thd_stream1; ///< Channel count for substream 1 of TrueHD streams ("6-channel presentation") |
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| 45 | int channels_thd_stream2; ///< Channel count for substream 2 of TrueHD streams ("8-channel presentation") |
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| 46 | uint64_t channel_layout_mlp; ///< Channel layout for MLP streams |
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| 47 | uint64_t channel_layout_thd_stream1; ///< Channel layout for substream 1 of TrueHD streams ("6-channel presentation") |
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| 48 | uint64_t channel_layout_thd_stream2; ///< Channel layout for substream 2 of TrueHD streams ("8-channel presentation") |
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| 49 | |||
| 50 | int access_unit_size; ///< Number of samples per coded frame |
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| 51 | int access_unit_size_pow2; ///< Next power of two above number of samples per frame |
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| 52 | |||
| 53 | int is_vbr; ///< Stream is VBR instead of CBR |
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| 54 | int peak_bitrate; ///< Peak bitrate for VBR, actual bitrate (==peak) for CBR |
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| 55 | |||
| 56 | int num_substreams; ///< Number of substreams within stream |
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| 57 | } MLPHeaderInfo; |
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| 58 | |||
| 59 | |||
| 60 | int ff_mlp_read_major_sync(void *log, MLPHeaderInfo *mh, GetBitContext *gb); |
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| 61 | uint64_t ff_truehd_layout(int chanmap); |
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| 62 | |||
| 63 | extern const uint64_t ff_mlp_layout[32]; |
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| 64 | |||
| 65 | #endif /* AVCODEC_MLP_PARSER_H */ |