[deb_ffmpeg.git] / ffmpeg / libavformat / spdif.h

/*
 * IEC 61937 common header
 * Copyright (c) 2009 Bartlomiej Wolowiec
 *
 * 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 AVFORMAT_SPDIF_H
#define AVFORMAT_SPDIF_H

#include <stdint.h>
#include "avformat.h"

#define SYNCWORD1 0xF872
#define SYNCWORD2 0x4E1F
#define BURST_HEADER_SIZE 0x8

enum IEC61937DataType {
    IEC61937_AC3                = 0x01,          ///< AC-3 data
    IEC61937_MPEG1_LAYER1       = 0x04,          ///< MPEG-1 layer 1
    IEC61937_MPEG1_LAYER23      = 0x05,          ///< MPEG-1 layer 2 or 3 data or MPEG-2 without extension
    IEC61937_MPEG2_EXT          = 0x06,          ///< MPEG-2 data with extension
    IEC61937_MPEG2_AAC          = 0x07,          ///< MPEG-2 AAC ADTS
    IEC61937_MPEG2_LAYER1_LSF   = 0x08,          ///< MPEG-2, layer-1 low sampling frequency
    IEC61937_MPEG2_LAYER2_LSF   = 0x09,          ///< MPEG-2, layer-2 low sampling frequency
    IEC61937_MPEG2_LAYER3_LSF   = 0x0A,          ///< MPEG-2, layer-3 low sampling frequency
    IEC61937_DTS1               = 0x0B,          ///< DTS type I   (512 samples)
    IEC61937_DTS2               = 0x0C,          ///< DTS type II  (1024 samples)
    IEC61937_DTS3               = 0x0D,          ///< DTS type III (2048 samples)
    IEC61937_ATRAC              = 0x0E,          ///< ATRAC data
    IEC61937_ATRAC3             = 0x0F,          ///< ATRAC3 data
    IEC61937_ATRACX             = 0x10,          ///< ATRAC3+ data
    IEC61937_DTSHD              = 0x11,          ///< DTS HD data
    IEC61937_WMAPRO             = 0x12,          ///< WMA 9 Professional data
    IEC61937_MPEG2_AAC_LSF_2048 = 0x13,          ///< MPEG-2 AAC ADTS half-rate low sampling frequency
    IEC61937_MPEG2_AAC_LSF_4096 = 0x13 | 0x20,   ///< MPEG-2 AAC ADTS quarter-rate low sampling frequency
    IEC61937_EAC3               = 0x15,          ///< E-AC-3 data
    IEC61937_TRUEHD             = 0x16,          ///< TrueHD data
};

static const uint16_t spdif_mpeg_pkt_offset[2][3] = {
    //LAYER1  LAYER2  LAYER3
    { 3072,    9216,   4608 }, // MPEG2 LSF
    { 1536,    4608,   4608 }, // MPEG1
};

void ff_spdif_bswap_buf16(uint16_t *dst, const uint16_t *src, int w);
int ff_spdif_read_packet(AVFormatContext *s, AVPacket *pkt);
int ff_spdif_probe(const uint8_t *p_buf, int buf_size, enum AVCodecID *codec);

#endif /* AVFORMAT_SPDIF_H */
Commit	Line	Data
	1	/*
	2	* IEC 61937 common header
	3	* Copyright (c) 2009 Bartlomiej Wolowiec
	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	#ifndef AVFORMAT_SPDIF_H
	23	#define AVFORMAT_SPDIF_H
	24
	25	#include <stdint.h>
	26	#include "avformat.h"
	27
	28	#define SYNCWORD1 0xF872
	29	#define SYNCWORD2 0x4E1F
	30	#define BURST_HEADER_SIZE 0x8
	31
	32	enum IEC61937DataType {
	33	IEC61937_AC3 = 0x01, ///< AC-3 data
	34	IEC61937_MPEG1_LAYER1 = 0x04, ///< MPEG-1 layer 1
	35	IEC61937_MPEG1_LAYER23 = 0x05, ///< MPEG-1 layer 2 or 3 data or MPEG-2 without extension
	36	IEC61937_MPEG2_EXT = 0x06, ///< MPEG-2 data with extension
	37	IEC61937_MPEG2_AAC = 0x07, ///< MPEG-2 AAC ADTS
	38	IEC61937_MPEG2_LAYER1_LSF = 0x08, ///< MPEG-2, layer-1 low sampling frequency
	39	IEC61937_MPEG2_LAYER2_LSF = 0x09, ///< MPEG-2, layer-2 low sampling frequency
	40	IEC61937_MPEG2_LAYER3_LSF = 0x0A, ///< MPEG-2, layer-3 low sampling frequency
	41	IEC61937_DTS1 = 0x0B, ///< DTS type I (512 samples)
	42	IEC61937_DTS2 = 0x0C, ///< DTS type II (1024 samples)
	43	IEC61937_DTS3 = 0x0D, ///< DTS type III (2048 samples)
	44	IEC61937_ATRAC = 0x0E, ///< ATRAC data
	45	IEC61937_ATRAC3 = 0x0F, ///< ATRAC3 data
	46	IEC61937_ATRACX = 0x10, ///< ATRAC3+ data
	47	IEC61937_DTSHD = 0x11, ///< DTS HD data
	48	IEC61937_WMAPRO = 0x12, ///< WMA 9 Professional data
	49	IEC61937_MPEG2_AAC_LSF_2048 = 0x13, ///< MPEG-2 AAC ADTS half-rate low sampling frequency
	50	IEC61937_MPEG2_AAC_LSF_4096 = 0x13 \| 0x20, ///< MPEG-2 AAC ADTS quarter-rate low sampling frequency
	51	IEC61937_EAC3 = 0x15, ///< E-AC-3 data
	52	IEC61937_TRUEHD = 0x16, ///< TrueHD data
	53	};
	54
	55	static const uint16_t spdif_mpeg_pkt_offset[2][3] = {
	56	//LAYER1 LAYER2 LAYER3
	57	{ 3072, 9216, 4608 }, // MPEG2 LSF
	58	{ 1536, 4608, 4608 }, // MPEG1
	59	};
	60
	61	void ff_spdif_bswap_buf16(uint16_t dst, const uint16_t src, int w);
	62	int ff_spdif_read_packet(AVFormatContext s, AVPacket pkt);
	63	int ff_spdif_probe(const uint8_t p_buf, int buf_size, enum AVCodecID codec);
	64
	65	#endif /* AVFORMAT_SPDIF_H */