[deb_ffmpeg.git] / ffmpeg / libavcodec / mlp_parser.h

/*
 * MLP parser prototypes
 * Copyright (c) 2007 Ian Caulfield
 *
 * 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
 */

/**
 * @file
 * MLP parser prototypes
 */

#ifndef AVCODEC_MLP_PARSER_H
#define AVCODEC_MLP_PARSER_H

#include "get_bits.h"

typedef struct MLPHeaderInfo
{
    int stream_type;                        ///< 0xBB for MLP, 0xBA for TrueHD
    int header_size;                        ///< Size of the major sync header, in bytes

    int group1_bits;                        ///< The bit depth of the first substream
    int group2_bits;                        ///< Bit depth of the second substream (MLP only)

    int group1_samplerate;                  ///< Sample rate of first substream
    int group2_samplerate;                  ///< Sample rate of second substream (MLP only)

    int channel_arrangement;

    int channel_modifier_thd_stream0;       ///< Channel modifier for substream 0 of TrueHD sreams ("2-channel presentation")
    int channel_modifier_thd_stream1;       ///< Channel modifier for substream 1 of TrueHD sreams ("6-channel presentation")
    int channel_modifier_thd_stream2;       ///< Channel modifier for substream 2 of TrueHD sreams ("8-channel presentation")

    int channels_mlp;                       ///< Channel count for MLP streams
    int channels_thd_stream1;               ///< Channel count for substream 1 of TrueHD streams ("6-channel presentation")
    int channels_thd_stream2;               ///< Channel count for substream 2 of TrueHD streams ("8-channel presentation")
    uint64_t channel_layout_mlp;            ///< Channel layout for MLP streams
    uint64_t channel_layout_thd_stream1;    ///< Channel layout for substream 1 of TrueHD streams ("6-channel presentation")
    uint64_t channel_layout_thd_stream2;    ///< Channel layout for substream 2 of TrueHD streams ("8-channel presentation")

    int access_unit_size;                   ///< Number of samples per coded frame
    int access_unit_size_pow2;              ///< Next power of two above number of samples per frame

    int is_vbr;                             ///< Stream is VBR instead of CBR
    int peak_bitrate;                       ///< Peak bitrate for VBR, actual bitrate (==peak) for CBR

    int num_substreams;                     ///< Number of substreams within stream
} MLPHeaderInfo;


int ff_mlp_read_major_sync(void *log, MLPHeaderInfo *mh, GetBitContext *gb);
uint64_t ff_truehd_layout(int chanmap);

extern const uint64_t ff_mlp_layout[32];

#endif /* AVCODEC_MLP_PARSER_H */
Commit	Line	Data
	1	/*
	2	* MLP parser prototypes
	3	* Copyright (c) 2007 Ian Caulfield
	4	*
	5	* This file is part of FFmpeg.
	6	*
	7	* FFmpeg is free software; you can redistribute it and/or
	8	* modify it under the terms of the GNU Lesser General Public
	9	* License as published by the Free Software Foundation; either
	10	* version 2.1 of the License, or (at your option) any later version.
	11	*
	12	* FFmpeg is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	15	* Lesser General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU Lesser General Public
	18	* License along with FFmpeg; if not, write to the Free Software
	19	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
	20	*/
	21
	22	/**
	23	* @file
	24	* MLP parser prototypes
	25	*/
	26
	27	#ifndef AVCODEC_MLP_PARSER_H
	28	#define AVCODEC_MLP_PARSER_H
	29
	30	#include "get_bits.h"
	31
	32	typedef struct MLPHeaderInfo
	33	{
	34	int stream_type; ///< 0xBB for MLP, 0xBA for TrueHD
	35	int header_size; ///< Size of the major sync header, in bytes
	36
	37	int group1_bits; ///< The bit depth of the first substream
	38	int group2_bits; ///< Bit depth of the second substream (MLP only)
	39
	40	int group1_samplerate; ///< Sample rate of first substream
	41	int group2_samplerate; ///< Sample rate of second substream (MLP only)
	42
	43	int channel_arrangement;
	44
	45	int channel_modifier_thd_stream0; ///< Channel modifier for substream 0 of TrueHD sreams ("2-channel presentation")
	46	int channel_modifier_thd_stream1; ///< Channel modifier for substream 1 of TrueHD sreams ("6-channel presentation")
	47	int channel_modifier_thd_stream2; ///< Channel modifier for substream 2 of TrueHD sreams ("8-channel presentation")
	48
	49	int channels_mlp; ///< Channel count for MLP streams
	50	int channels_thd_stream1; ///< Channel count for substream 1 of TrueHD streams ("6-channel presentation")
	51	int channels_thd_stream2; ///< Channel count for substream 2 of TrueHD streams ("8-channel presentation")
	52	uint64_t channel_layout_mlp; ///< Channel layout for MLP streams
	53	uint64_t channel_layout_thd_stream1; ///< Channel layout for substream 1 of TrueHD streams ("6-channel presentation")
	54	uint64_t channel_layout_thd_stream2; ///< Channel layout for substream 2 of TrueHD streams ("8-channel presentation")
	55
	56	int access_unit_size; ///< Number of samples per coded frame
	57	int access_unit_size_pow2; ///< Next power of two above number of samples per frame
	58
	59	int is_vbr; ///< Stream is VBR instead of CBR
	60	int peak_bitrate; ///< Peak bitrate for VBR, actual bitrate (==peak) for CBR
	61
	62	int num_substreams; ///< Number of substreams within stream
	63	} MLPHeaderInfo;
	64
	65
	66	int ff_mlp_read_major_sync(void log, MLPHeaderInfo mh, GetBitContext *gb);
	67	uint64_t ff_truehd_layout(int chanmap);
	68
	69	extern const uint64_t ff_mlp_layout[32];
	70
	71	#endif /* AVCODEC_MLP_PARSER_H */