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858 lines
28 KiB
C
858 lines
28 KiB
C
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/*
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** Copyright (C) 1999-2016 Erik de Castro Lopo <erikd@mega-nerd.com>
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**
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** This program is free software; you can redistribute it and/or modify
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** it under the terms of the GNU Lesser General Public License as published by
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** the Free Software Foundation; either version 2.1 of the License, or
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** (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU Lesser General Public License for more details.
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**
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** You should have received a copy of the GNU Lesser General Public License
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** along with this program; if not, write to the Free Software
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** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/*
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** sndfile.h -- system-wide definitions
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**
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** API documentation is in the doc/ directory of the source code tarball
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** and at http://www.mega-nerd.com/libsndfile/api.html.
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*/
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#ifndef SNDFILE_H
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#define SNDFILE_H
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/* This is the version 1.0.X header file. */
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#define SNDFILE_1
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#include <stdio.h>
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#include <stdint.h>
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#include <sys/types.h>
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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/* The following file types can be read and written.
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** A file type would consist of a major type (ie SF_FORMAT_WAV) bitwise
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** ORed with a minor type (ie SF_FORMAT_PCM). SF_FORMAT_TYPEMASK and
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** SF_FORMAT_SUBMASK can be used to separate the major and minor file
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** types.
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*/
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enum
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{ /* Major formats. */
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SF_FORMAT_WAV = 0x010000, /* Microsoft WAV format (little endian default). */
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SF_FORMAT_AIFF = 0x020000, /* Apple/SGI AIFF format (big endian). */
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SF_FORMAT_AU = 0x030000, /* Sun/NeXT AU format (big endian). */
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SF_FORMAT_RAW = 0x040000, /* RAW PCM data. */
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SF_FORMAT_PAF = 0x050000, /* Ensoniq PARIS file format. */
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SF_FORMAT_SVX = 0x060000, /* Amiga IFF / SVX8 / SV16 format. */
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SF_FORMAT_NIST = 0x070000, /* Sphere NIST format. */
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SF_FORMAT_VOC = 0x080000, /* VOC files. */
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SF_FORMAT_IRCAM = 0x0A0000, /* Berkeley/IRCAM/CARL */
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SF_FORMAT_W64 = 0x0B0000, /* Sonic Foundry's 64 bit RIFF/WAV */
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SF_FORMAT_MAT4 = 0x0C0000, /* Matlab (tm) V4.2 / GNU Octave 2.0 */
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SF_FORMAT_MAT5 = 0x0D0000, /* Matlab (tm) V5.0 / GNU Octave 2.1 */
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SF_FORMAT_PVF = 0x0E0000, /* Portable Voice Format */
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SF_FORMAT_XI = 0x0F0000, /* Fasttracker 2 Extended Instrument */
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SF_FORMAT_HTK = 0x100000, /* HMM Tool Kit format */
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SF_FORMAT_SDS = 0x110000, /* Midi Sample Dump Standard */
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SF_FORMAT_AVR = 0x120000, /* Audio Visual Research */
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SF_FORMAT_WAVEX = 0x130000, /* MS WAVE with WAVEFORMATEX */
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SF_FORMAT_SD2 = 0x160000, /* Sound Designer 2 */
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SF_FORMAT_FLAC = 0x170000, /* FLAC lossless file format */
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SF_FORMAT_CAF = 0x180000, /* Core Audio File format */
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SF_FORMAT_WVE = 0x190000, /* Psion WVE format */
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SF_FORMAT_OGG = 0x200000, /* Xiph OGG container */
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SF_FORMAT_MPC2K = 0x210000, /* Akai MPC 2000 sampler */
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SF_FORMAT_RF64 = 0x220000, /* RF64 WAV file */
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/* Subtypes from here on. */
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SF_FORMAT_PCM_S8 = 0x0001, /* Signed 8 bit data */
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SF_FORMAT_PCM_16 = 0x0002, /* Signed 16 bit data */
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SF_FORMAT_PCM_24 = 0x0003, /* Signed 24 bit data */
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SF_FORMAT_PCM_32 = 0x0004, /* Signed 32 bit data */
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SF_FORMAT_PCM_U8 = 0x0005, /* Unsigned 8 bit data (WAV and RAW only) */
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SF_FORMAT_FLOAT = 0x0006, /* 32 bit float data */
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SF_FORMAT_DOUBLE = 0x0007, /* 64 bit float data */
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SF_FORMAT_ULAW = 0x0010, /* U-Law encoded. */
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SF_FORMAT_ALAW = 0x0011, /* A-Law encoded. */
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SF_FORMAT_IMA_ADPCM = 0x0012, /* IMA ADPCM. */
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SF_FORMAT_MS_ADPCM = 0x0013, /* Microsoft ADPCM. */
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SF_FORMAT_GSM610 = 0x0020, /* GSM 6.10 encoding. */
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SF_FORMAT_VOX_ADPCM = 0x0021, /* OKI / Dialogix ADPCM */
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SF_FORMAT_G721_32 = 0x0030, /* 32kbs G721 ADPCM encoding. */
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SF_FORMAT_G723_24 = 0x0031, /* 24kbs G723 ADPCM encoding. */
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SF_FORMAT_G723_40 = 0x0032, /* 40kbs G723 ADPCM encoding. */
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SF_FORMAT_DWVW_12 = 0x0040, /* 12 bit Delta Width Variable Word encoding. */
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SF_FORMAT_DWVW_16 = 0x0041, /* 16 bit Delta Width Variable Word encoding. */
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SF_FORMAT_DWVW_24 = 0x0042, /* 24 bit Delta Width Variable Word encoding. */
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SF_FORMAT_DWVW_N = 0x0043, /* N bit Delta Width Variable Word encoding. */
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SF_FORMAT_DPCM_8 = 0x0050, /* 8 bit differential PCM (XI only) */
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SF_FORMAT_DPCM_16 = 0x0051, /* 16 bit differential PCM (XI only) */
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SF_FORMAT_VORBIS = 0x0060, /* Xiph Vorbis encoding. */
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SF_FORMAT_ALAC_16 = 0x0070, /* Apple Lossless Audio Codec (16 bit). */
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SF_FORMAT_ALAC_20 = 0x0071, /* Apple Lossless Audio Codec (20 bit). */
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SF_FORMAT_ALAC_24 = 0x0072, /* Apple Lossless Audio Codec (24 bit). */
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SF_FORMAT_ALAC_32 = 0x0073, /* Apple Lossless Audio Codec (32 bit). */
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/* Endian-ness options. */
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SF_ENDIAN_FILE = 0x00000000, /* Default file endian-ness. */
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SF_ENDIAN_LITTLE = 0x10000000, /* Force little endian-ness. */
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SF_ENDIAN_BIG = 0x20000000, /* Force big endian-ness. */
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SF_ENDIAN_CPU = 0x30000000, /* Force CPU endian-ness. */
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SF_FORMAT_SUBMASK = 0x0000FFFF,
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SF_FORMAT_TYPEMASK = 0x0FFF0000,
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SF_FORMAT_ENDMASK = 0x30000000
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} ;
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/*
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** The following are the valid command numbers for the sf_command()
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** interface. The use of these commands is documented in the file
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** command.html in the doc directory of the source code distribution.
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*/
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enum
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{ SFC_GET_LIB_VERSION = 0x1000,
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SFC_GET_LOG_INFO = 0x1001,
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SFC_GET_CURRENT_SF_INFO = 0x1002,
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SFC_GET_NORM_DOUBLE = 0x1010,
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SFC_GET_NORM_FLOAT = 0x1011,
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SFC_SET_NORM_DOUBLE = 0x1012,
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SFC_SET_NORM_FLOAT = 0x1013,
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SFC_SET_SCALE_FLOAT_INT_READ = 0x1014,
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SFC_SET_SCALE_INT_FLOAT_WRITE = 0x1015,
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SFC_GET_SIMPLE_FORMAT_COUNT = 0x1020,
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SFC_GET_SIMPLE_FORMAT = 0x1021,
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SFC_GET_FORMAT_INFO = 0x1028,
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SFC_GET_FORMAT_MAJOR_COUNT = 0x1030,
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SFC_GET_FORMAT_MAJOR = 0x1031,
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SFC_GET_FORMAT_SUBTYPE_COUNT = 0x1032,
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SFC_GET_FORMAT_SUBTYPE = 0x1033,
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SFC_CALC_SIGNAL_MAX = 0x1040,
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SFC_CALC_NORM_SIGNAL_MAX = 0x1041,
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SFC_CALC_MAX_ALL_CHANNELS = 0x1042,
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SFC_CALC_NORM_MAX_ALL_CHANNELS = 0x1043,
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SFC_GET_SIGNAL_MAX = 0x1044,
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SFC_GET_MAX_ALL_CHANNELS = 0x1045,
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SFC_SET_ADD_PEAK_CHUNK = 0x1050,
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SFC_SET_ADD_HEADER_PAD_CHUNK = 0x1051,
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SFC_UPDATE_HEADER_NOW = 0x1060,
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SFC_SET_UPDATE_HEADER_AUTO = 0x1061,
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SFC_FILE_TRUNCATE = 0x1080,
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SFC_SET_RAW_START_OFFSET = 0x1090,
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SFC_SET_DITHER_ON_WRITE = 0x10A0,
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SFC_SET_DITHER_ON_READ = 0x10A1,
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SFC_GET_DITHER_INFO_COUNT = 0x10A2,
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SFC_GET_DITHER_INFO = 0x10A3,
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SFC_GET_EMBED_FILE_INFO = 0x10B0,
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SFC_SET_CLIPPING = 0x10C0,
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SFC_GET_CLIPPING = 0x10C1,
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SFC_GET_CUE_COUNT = 0x10CD,
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SFC_GET_CUE = 0x10CE,
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SFC_SET_CUE = 0x10CF,
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SFC_GET_INSTRUMENT = 0x10D0,
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SFC_SET_INSTRUMENT = 0x10D1,
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SFC_GET_LOOP_INFO = 0x10E0,
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SFC_GET_BROADCAST_INFO = 0x10F0,
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SFC_SET_BROADCAST_INFO = 0x10F1,
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SFC_GET_CHANNEL_MAP_INFO = 0x1100,
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SFC_SET_CHANNEL_MAP_INFO = 0x1101,
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SFC_RAW_DATA_NEEDS_ENDSWAP = 0x1110,
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/* Support for Wavex Ambisonics Format */
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SFC_WAVEX_SET_AMBISONIC = 0x1200,
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SFC_WAVEX_GET_AMBISONIC = 0x1201,
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/*
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** RF64 files can be set so that on-close, writable files that have less
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** than 4GB of data in them are converted to RIFF/WAV, as per EBU
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** recommendations.
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*/
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SFC_RF64_AUTO_DOWNGRADE = 0x1210,
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SFC_SET_VBR_ENCODING_QUALITY = 0x1300,
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SFC_SET_COMPRESSION_LEVEL = 0x1301,
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/* Cart Chunk support */
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SFC_SET_CART_INFO = 0x1400,
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SFC_GET_CART_INFO = 0x1401,
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/* Following commands for testing only. */
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SFC_TEST_IEEE_FLOAT_REPLACE = 0x6001,
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/*
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** SFC_SET_ADD_* values are deprecated and will disappear at some
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** time in the future. They are guaranteed to be here up to and
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** including version 1.0.8 to avoid breakage of existing software.
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** They currently do nothing and will continue to do nothing.
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*/
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SFC_SET_ADD_DITHER_ON_WRITE = 0x1070,
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SFC_SET_ADD_DITHER_ON_READ = 0x1071
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} ;
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/*
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** String types that can be set and read from files. Not all file types
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** support this and even the file types which support one, may not support
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** all string types.
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*/
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enum
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{ SF_STR_TITLE = 0x01,
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SF_STR_COPYRIGHT = 0x02,
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SF_STR_SOFTWARE = 0x03,
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SF_STR_ARTIST = 0x04,
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SF_STR_COMMENT = 0x05,
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SF_STR_DATE = 0x06,
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SF_STR_ALBUM = 0x07,
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SF_STR_LICENSE = 0x08,
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SF_STR_TRACKNUMBER = 0x09,
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SF_STR_GENRE = 0x10
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} ;
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/*
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** Use the following as the start and end index when doing metadata
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** transcoding.
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*/
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#define SF_STR_FIRST SF_STR_TITLE
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#define SF_STR_LAST SF_STR_GENRE
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enum
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{ /* True and false */
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SF_FALSE = 0,
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SF_TRUE = 1,
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/* Modes for opening files. */
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SFM_READ = 0x10,
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SFM_WRITE = 0x20,
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SFM_RDWR = 0x30,
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SF_AMBISONIC_NONE = 0x40,
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SF_AMBISONIC_B_FORMAT = 0x41
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} ;
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/* Public error values. These are guaranteed to remain unchanged for the duration
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** of the library major version number.
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** There are also a large number of private error numbers which are internal to
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** the library which can change at any time.
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*/
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enum
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{ SF_ERR_NO_ERROR = 0,
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SF_ERR_UNRECOGNISED_FORMAT = 1,
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SF_ERR_SYSTEM = 2,
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SF_ERR_MALFORMED_FILE = 3,
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SF_ERR_UNSUPPORTED_ENCODING = 4
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} ;
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/* Channel map values (used with SFC_SET/GET_CHANNEL_MAP).
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*/
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enum
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{ SF_CHANNEL_MAP_INVALID = 0,
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SF_CHANNEL_MAP_MONO = 1,
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SF_CHANNEL_MAP_LEFT, /* Apple calls this 'Left' */
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SF_CHANNEL_MAP_RIGHT, /* Apple calls this 'Right' */
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SF_CHANNEL_MAP_CENTER, /* Apple calls this 'Center' */
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SF_CHANNEL_MAP_FRONT_LEFT,
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SF_CHANNEL_MAP_FRONT_RIGHT,
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SF_CHANNEL_MAP_FRONT_CENTER,
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SF_CHANNEL_MAP_REAR_CENTER, /* Apple calls this 'Center Surround', Msft calls this 'Back Center' */
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SF_CHANNEL_MAP_REAR_LEFT, /* Apple calls this 'Left Surround', Msft calls this 'Back Left' */
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SF_CHANNEL_MAP_REAR_RIGHT, /* Apple calls this 'Right Surround', Msft calls this 'Back Right' */
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SF_CHANNEL_MAP_LFE, /* Apple calls this 'LFEScreen', Msft calls this 'Low Frequency' */
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SF_CHANNEL_MAP_FRONT_LEFT_OF_CENTER, /* Apple calls this 'Left Center' */
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SF_CHANNEL_MAP_FRONT_RIGHT_OF_CENTER, /* Apple calls this 'Right Center */
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SF_CHANNEL_MAP_SIDE_LEFT, /* Apple calls this 'Left Surround Direct' */
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SF_CHANNEL_MAP_SIDE_RIGHT, /* Apple calls this 'Right Surround Direct' */
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SF_CHANNEL_MAP_TOP_CENTER, /* Apple calls this 'Top Center Surround' */
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SF_CHANNEL_MAP_TOP_FRONT_LEFT, /* Apple calls this 'Vertical Height Left' */
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SF_CHANNEL_MAP_TOP_FRONT_RIGHT, /* Apple calls this 'Vertical Height Right' */
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SF_CHANNEL_MAP_TOP_FRONT_CENTER, /* Apple calls this 'Vertical Height Center' */
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SF_CHANNEL_MAP_TOP_REAR_LEFT, /* Apple and MS call this 'Top Back Left' */
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SF_CHANNEL_MAP_TOP_REAR_RIGHT, /* Apple and MS call this 'Top Back Right' */
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SF_CHANNEL_MAP_TOP_REAR_CENTER, /* Apple and MS call this 'Top Back Center' */
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SF_CHANNEL_MAP_AMBISONIC_B_W,
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SF_CHANNEL_MAP_AMBISONIC_B_X,
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SF_CHANNEL_MAP_AMBISONIC_B_Y,
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SF_CHANNEL_MAP_AMBISONIC_B_Z,
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SF_CHANNEL_MAP_MAX
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} ;
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/* A SNDFILE* pointer can be passed around much like stdio.h's FILE* pointer. */
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typedef struct SNDFILE_tag SNDFILE ;
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/* The following typedef is system specific and is defined when libsndfile is
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** compiled. sf_count_t will be a 64 bit value when the underlying OS allows
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** 64 bit file offsets.
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** On windows, we need to allow the same header file to be compiler by both GCC
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** and the Microsoft compiler.
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*/
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#if (defined (_MSCVER) || defined (_MSC_VER) && (_MSC_VER < 1310))
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typedef __int64 sf_count_t ;
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#define SF_COUNT_MAX 0x7fffffffffffffffi64
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#else
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typedef __int64 sf_count_t ;
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#define SF_COUNT_MAX 0x7FFFFFFFFFFFFFFFLL
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#endif
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/* A pointer to a SF_INFO structure is passed to sf_open () and filled in.
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** On write, the SF_INFO structure is filled in by the user and passed into
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** sf_open ().
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*/
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struct SF_INFO
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{ sf_count_t frames ; /* Used to be called samples. Changed to avoid confusion. */
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int samplerate ;
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int channels ;
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int format ;
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int sections ;
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int seekable ;
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} ;
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typedef struct SF_INFO SF_INFO ;
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/* The SF_FORMAT_INFO struct is used to retrieve information about the sound
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** file formats libsndfile supports using the sf_command () interface.
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**
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** Using this interface will allow applications to support new file formats
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** and encoding types when libsndfile is upgraded, without requiring
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** re-compilation of the application.
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**
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** Please consult the libsndfile documentation (particularly the information
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** on the sf_command () interface) for examples of its use.
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*/
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typedef struct
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{ int format ;
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const char *name ;
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const char *extension ;
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||
|
} SF_FORMAT_INFO ;
|
||
|
|
||
|
/*
|
||
|
** Enums and typedefs for adding dither on read and write.
|
||
|
** See the html documentation for sf_command(), SFC_SET_DITHER_ON_WRITE
|
||
|
** and SFC_SET_DITHER_ON_READ.
|
||
|
*/
|
||
|
|
||
|
enum
|
||
|
{ SFD_DEFAULT_LEVEL = 0,
|
||
|
SFD_CUSTOM_LEVEL = 0x40000000,
|
||
|
|
||
|
SFD_NO_DITHER = 500,
|
||
|
SFD_WHITE = 501,
|
||
|
SFD_TRIANGULAR_PDF = 502
|
||
|
} ;
|
||
|
|
||
|
typedef struct
|
||
|
{ int type ;
|
||
|
double level ;
|
||
|
const char *name ;
|
||
|
} SF_DITHER_INFO ;
|
||
|
|
||
|
/* Struct used to retrieve information about a file embedded within a
|
||
|
** larger file. See SFC_GET_EMBED_FILE_INFO.
|
||
|
*/
|
||
|
|
||
|
typedef struct
|
||
|
{ sf_count_t offset ;
|
||
|
sf_count_t length ;
|
||
|
} SF_EMBED_FILE_INFO ;
|
||
|
|
||
|
/*
|
||
|
** Struct used to retrieve cue marker information from a file
|
||
|
*/
|
||
|
|
||
|
typedef struct
|
||
|
{ int32_t indx ;
|
||
|
uint32_t position ;
|
||
|
int32_t fcc_chunk ;
|
||
|
int32_t chunk_start ;
|
||
|
int32_t block_start ;
|
||
|
uint32_t sample_offset ;
|
||
|
char name [256] ;
|
||
|
} SF_CUE_POINT ;
|
||
|
|
||
|
#define SF_CUES_VAR(count) \
|
||
|
struct \
|
||
|
{ uint32_t cue_count ; \
|
||
|
SF_CUE_POINT cue_points [count] ; \
|
||
|
}
|
||
|
|
||
|
typedef SF_CUES_VAR (100) SF_CUES ;
|
||
|
|
||
|
/*
|
||
|
** Structs used to retrieve music sample information from a file.
|
||
|
*/
|
||
|
|
||
|
enum
|
||
|
{ /*
|
||
|
** The loop mode field in SF_INSTRUMENT will be one of the following.
|
||
|
*/
|
||
|
SF_LOOP_NONE = 800,
|
||
|
SF_LOOP_FORWARD,
|
||
|
SF_LOOP_BACKWARD,
|
||
|
SF_LOOP_ALTERNATING
|
||
|
} ;
|
||
|
|
||
|
typedef struct
|
||
|
{ int gain ;
|
||
|
char basenote, detune ;
|
||
|
char velocity_lo, velocity_hi ;
|
||
|
char key_lo, key_hi ;
|
||
|
int loop_count ;
|
||
|
|
||
|
struct
|
||
|
{ int mode ;
|
||
|
uint32_t start ;
|
||
|
uint32_t end ;
|
||
|
uint32_t count ;
|
||
|
} loops [16] ; /* make variable in a sensible way */
|
||
|
} SF_INSTRUMENT ;
|
||
|
|
||
|
|
||
|
|
||
|
/* Struct used to retrieve loop information from a file.*/
|
||
|
typedef struct
|
||
|
{
|
||
|
short time_sig_num ; /* any positive integer > 0 */
|
||
|
short time_sig_den ; /* any positive power of 2 > 0 */
|
||
|
int loop_mode ; /* see SF_LOOP enum */
|
||
|
|
||
|
int num_beats ; /* this is NOT the amount of quarter notes !!!*/
|
||
|
/* a full bar of 4/4 is 4 beats */
|
||
|
/* a full bar of 7/8 is 7 beats */
|
||
|
|
||
|
float bpm ; /* suggestion, as it can be calculated using other fields:*/
|
||
|
/* file's length, file's sampleRate and our time_sig_den*/
|
||
|
/* -> bpms are always the amount of _quarter notes_ per minute */
|
||
|
|
||
|
int root_key ; /* MIDI note, or -1 for None */
|
||
|
int future [6] ;
|
||
|
} SF_LOOP_INFO ;
|
||
|
|
||
|
|
||
|
/* Struct used to retrieve broadcast (EBU) information from a file.
|
||
|
** Strongly (!) based on EBU "bext" chunk format used in Broadcast WAVE.
|
||
|
*/
|
||
|
#define SF_BROADCAST_INFO_VAR(coding_hist_size) \
|
||
|
struct \
|
||
|
{ char description [256] ; \
|
||
|
char originator [32] ; \
|
||
|
char originator_reference [32] ; \
|
||
|
char origination_date [10] ; \
|
||
|
char origination_time [8] ; \
|
||
|
uint32_t time_reference_low ; \
|
||
|
uint32_t time_reference_high ; \
|
||
|
short version ; \
|
||
|
char umid [64] ; \
|
||
|
char reserved [190] ; \
|
||
|
uint32_t coding_history_size ; \
|
||
|
char coding_history [coding_hist_size] ; \
|
||
|
}
|
||
|
|
||
|
/* SF_BROADCAST_INFO is the above struct with coding_history field of 256 bytes. */
|
||
|
typedef SF_BROADCAST_INFO_VAR (256) SF_BROADCAST_INFO ;
|
||
|
|
||
|
struct SF_CART_TIMER
|
||
|
{ char usage [4] ;
|
||
|
int32_t value ;
|
||
|
} ;
|
||
|
|
||
|
typedef struct SF_CART_TIMER SF_CART_TIMER ;
|
||
|
|
||
|
#define SF_CART_INFO_VAR(p_tag_text_size) \
|
||
|
struct \
|
||
|
{ char version [4] ; \
|
||
|
char title [64] ; \
|
||
|
char artist [64] ; \
|
||
|
char cut_id [64] ; \
|
||
|
char client_id [64] ; \
|
||
|
char category [64] ; \
|
||
|
char classification [64] ; \
|
||
|
char out_cue [64] ; \
|
||
|
char start_date [10] ; \
|
||
|
char start_time [8] ; \
|
||
|
char end_date [10] ; \
|
||
|
char end_time [8] ; \
|
||
|
char producer_app_id [64] ; \
|
||
|
char producer_app_version [64] ; \
|
||
|
char user_def [64] ; \
|
||
|
int32_t level_reference ; \
|
||
|
SF_CART_TIMER post_timers [8] ; \
|
||
|
char reserved [276] ; \
|
||
|
char url [1024] ; \
|
||
|
uint32_t tag_text_size ; \
|
||
|
char tag_text [p_tag_text_size] ; \
|
||
|
}
|
||
|
|
||
|
typedef SF_CART_INFO_VAR (256) SF_CART_INFO ;
|
||
|
|
||
|
/* Virtual I/O functionality. */
|
||
|
|
||
|
typedef sf_count_t (*sf_vio_get_filelen) (void *user_data) ;
|
||
|
typedef sf_count_t (*sf_vio_seek) (sf_count_t offset, int whence, void *user_data) ;
|
||
|
typedef sf_count_t (*sf_vio_read) (void *ptr, sf_count_t count, void *user_data) ;
|
||
|
typedef sf_count_t (*sf_vio_write) (const void *ptr, sf_count_t count, void *user_data) ;
|
||
|
typedef sf_count_t (*sf_vio_tell) (void *user_data) ;
|
||
|
|
||
|
struct SF_VIRTUAL_IO
|
||
|
{ sf_vio_get_filelen get_filelen ;
|
||
|
sf_vio_seek seek ;
|
||
|
sf_vio_read read ;
|
||
|
sf_vio_write write ;
|
||
|
sf_vio_tell tell ;
|
||
|
} ;
|
||
|
|
||
|
typedef struct SF_VIRTUAL_IO SF_VIRTUAL_IO ;
|
||
|
|
||
|
|
||
|
/* Open the specified file for read, write or both. On error, this will
|
||
|
** return a NULL pointer. To find the error number, pass a NULL SNDFILE
|
||
|
** to sf_strerror ().
|
||
|
** All calls to sf_open() should be matched with a call to sf_close().
|
||
|
*/
|
||
|
|
||
|
SNDFILE* sf_open (const char *path, int mode, SF_INFO *sfinfo) ;
|
||
|
|
||
|
|
||
|
/* Use the existing file descriptor to create a SNDFILE object. If close_desc
|
||
|
** is TRUE, the file descriptor will be closed when sf_close() is called. If
|
||
|
** it is FALSE, the descriptor will not be closed.
|
||
|
** When passed a descriptor like this, the library will assume that the start
|
||
|
** of file header is at the current file offset. This allows sound files within
|
||
|
** larger container files to be read and/or written.
|
||
|
** On error, this will return a NULL pointer. To find the error number, pass a
|
||
|
** NULL SNDFILE to sf_strerror ().
|
||
|
** All calls to sf_open_fd() should be matched with a call to sf_close().
|
||
|
|
||
|
*/
|
||
|
|
||
|
SNDFILE* sf_open_fd (int fd, int mode, SF_INFO *sfinfo, int close_desc) ;
|
||
|
|
||
|
SNDFILE* sf_open_virtual (SF_VIRTUAL_IO *sfvirtual, int mode, SF_INFO *sfinfo, void *user_data) ;
|
||
|
|
||
|
|
||
|
/* sf_error () returns a error number which can be translated to a text
|
||
|
** string using sf_error_number().
|
||
|
*/
|
||
|
|
||
|
int sf_error (SNDFILE *sndfile) ;
|
||
|
|
||
|
|
||
|
/* sf_strerror () returns to the caller a pointer to the current error message for
|
||
|
** the given SNDFILE.
|
||
|
*/
|
||
|
|
||
|
const char* sf_strerror (SNDFILE *sndfile) ;
|
||
|
|
||
|
|
||
|
/* sf_error_number () allows the retrieval of the error string for each internal
|
||
|
** error number.
|
||
|
**
|
||
|
*/
|
||
|
|
||
|
const char* sf_error_number (int errnum) ;
|
||
|
|
||
|
|
||
|
/* The following two error functions are deprecated but they will remain in the
|
||
|
** library for the foreseeable future. The function sf_strerror() should be used
|
||
|
** in their place.
|
||
|
*/
|
||
|
|
||
|
int sf_perror (SNDFILE *sndfile) ;
|
||
|
int sf_error_str (SNDFILE *sndfile, char* str, size_t len) ;
|
||
|
|
||
|
|
||
|
/* Return TRUE if fields of the SF_INFO struct are a valid combination of values. */
|
||
|
|
||
|
int sf_command (SNDFILE *sndfile, int command, void *data, int datasize) ;
|
||
|
|
||
|
|
||
|
/* Return TRUE if fields of the SF_INFO struct are a valid combination of values. */
|
||
|
|
||
|
int sf_format_check (const SF_INFO *info) ;
|
||
|
|
||
|
|
||
|
/* Seek within the waveform data chunk of the SNDFILE. sf_seek () uses
|
||
|
** the same values for whence (SEEK_SET, SEEK_CUR and SEEK_END) as
|
||
|
** stdio.h function fseek ().
|
||
|
** An offset of zero with whence set to SEEK_SET will position the
|
||
|
** read / write pointer to the first data sample.
|
||
|
** On success sf_seek returns the current position in (multi-channel)
|
||
|
** samples from the start of the file.
|
||
|
** Please see the libsndfile documentation for moving the read pointer
|
||
|
** separately from the write pointer on files open in mode SFM_RDWR.
|
||
|
** On error all of these functions return -1.
|
||
|
*/
|
||
|
|
||
|
enum
|
||
|
{ SF_SEEK_SET = SEEK_SET,
|
||
|
SF_SEEK_CUR = SEEK_CUR,
|
||
|
SF_SEEK_END = SEEK_END
|
||
|
} ;
|
||
|
|
||
|
sf_count_t sf_seek (SNDFILE *sndfile, sf_count_t frames, int whence) ;
|
||
|
|
||
|
|
||
|
/* Functions for retrieving and setting string data within sound files.
|
||
|
** Not all file types support this features; AIFF and WAV do. For both
|
||
|
** functions, the str_type parameter must be one of the SF_STR_* values
|
||
|
** defined above.
|
||
|
** On error, sf_set_string() returns non-zero while sf_get_string()
|
||
|
** returns NULL.
|
||
|
*/
|
||
|
|
||
|
int sf_set_string (SNDFILE *sndfile, int str_type, const char* str) ;
|
||
|
|
||
|
const char* sf_get_string (SNDFILE *sndfile, int str_type) ;
|
||
|
|
||
|
|
||
|
/* Return the library version string. */
|
||
|
|
||
|
const char * sf_version_string (void) ;
|
||
|
|
||
|
/* Return the current byterate at this point in the file. The byte rate in this
|
||
|
** case is the number of bytes per second of audio data. For instance, for a
|
||
|
** stereo, 18 bit PCM encoded file with an 16kHz sample rate, the byte rate
|
||
|
** would be 2 (stereo) * 2 (two bytes per sample) * 16000 => 64000 bytes/sec.
|
||
|
** For some file formats the returned value will be accurate and exact, for some
|
||
|
** it will be a close approximation, for some it will be the average bitrate for
|
||
|
** the whole file and for some it will be a time varying value that was accurate
|
||
|
** when the file was most recently read or written.
|
||
|
** To get the bitrate, multiple this value by 8.
|
||
|
** Returns -1 for unknown.
|
||
|
*/
|
||
|
int sf_current_byterate (SNDFILE *sndfile) ;
|
||
|
|
||
|
/* Functions for reading/writing the waveform data of a sound file.
|
||
|
*/
|
||
|
|
||
|
sf_count_t sf_read_raw (SNDFILE *sndfile, void *ptr, sf_count_t bytes) ;
|
||
|
sf_count_t sf_write_raw (SNDFILE *sndfile, const void *ptr, sf_count_t bytes) ;
|
||
|
|
||
|
|
||
|
/* Functions for reading and writing the data chunk in terms of frames.
|
||
|
** The number of items actually read/written = frames * number of channels.
|
||
|
** sf_xxxx_raw read/writes the raw data bytes from/to the file
|
||
|
** sf_xxxx_short passes data in the native short format
|
||
|
** sf_xxxx_int passes data in the native int format
|
||
|
** sf_xxxx_float passes data in the native float format
|
||
|
** sf_xxxx_double passes data in the native double format
|
||
|
** All of these read/write function return number of frames read/written.
|
||
|
*/
|
||
|
|
||
|
sf_count_t sf_readf_short (SNDFILE *sndfile, short *ptr, sf_count_t frames) ;
|
||
|
sf_count_t sf_writef_short (SNDFILE *sndfile, const short *ptr, sf_count_t frames) ;
|
||
|
|
||
|
sf_count_t sf_readf_int (SNDFILE *sndfile, int *ptr, sf_count_t frames) ;
|
||
|
sf_count_t sf_writef_int (SNDFILE *sndfile, const int *ptr, sf_count_t frames) ;
|
||
|
|
||
|
sf_count_t sf_readf_float (SNDFILE *sndfile, float *ptr, sf_count_t frames) ;
|
||
|
sf_count_t sf_writef_float (SNDFILE *sndfile, const float *ptr, sf_count_t frames) ;
|
||
|
|
||
|
sf_count_t sf_readf_double (SNDFILE *sndfile, double *ptr, sf_count_t frames) ;
|
||
|
sf_count_t sf_writef_double (SNDFILE *sndfile, const double *ptr, sf_count_t frames) ;
|
||
|
|
||
|
|
||
|
/* Functions for reading and writing the data chunk in terms of items.
|
||
|
** Otherwise similar to above.
|
||
|
** All of these read/write function return number of items read/written.
|
||
|
*/
|
||
|
|
||
|
sf_count_t sf_read_short (SNDFILE *sndfile, short *ptr, sf_count_t items) ;
|
||
|
sf_count_t sf_write_short (SNDFILE *sndfile, const short *ptr, sf_count_t items) ;
|
||
|
|
||
|
sf_count_t sf_read_int (SNDFILE *sndfile, int *ptr, sf_count_t items) ;
|
||
|
sf_count_t sf_write_int (SNDFILE *sndfile, const int *ptr, sf_count_t items) ;
|
||
|
|
||
|
sf_count_t sf_read_float (SNDFILE *sndfile, float *ptr, sf_count_t items) ;
|
||
|
sf_count_t sf_write_float (SNDFILE *sndfile, const float *ptr, sf_count_t items) ;
|
||
|
|
||
|
sf_count_t sf_read_double (SNDFILE *sndfile, double *ptr, sf_count_t items) ;
|
||
|
sf_count_t sf_write_double (SNDFILE *sndfile, const double *ptr, sf_count_t items) ;
|
||
|
|
||
|
|
||
|
/* Close the SNDFILE and clean up all memory allocations associated with this
|
||
|
** file.
|
||
|
** Returns 0 on success, or an error number.
|
||
|
*/
|
||
|
|
||
|
int sf_close (SNDFILE *sndfile) ;
|
||
|
|
||
|
|
||
|
/* If the file is opened SFM_WRITE or SFM_RDWR, call fsync() on the file
|
||
|
** to force the writing of data to disk. If the file is opened SFM_READ
|
||
|
** no action is taken.
|
||
|
*/
|
||
|
|
||
|
void sf_write_sync (SNDFILE *sndfile) ;
|
||
|
|
||
|
|
||
|
|
||
|
/* The function sf_wchar_open() is Windows Only!
|
||
|
** Open a file passing in a Windows Unicode filename. Otherwise, this is
|
||
|
** the same as sf_open().
|
||
|
**
|
||
|
** In order for this to work, you need to do the following:
|
||
|
**
|
||
|
** #include <windows.h>
|
||
|
** #define ENABLE_SNDFILE_WINDOWS_PROTOTYPES 1
|
||
|
** #including <sndfile.h>
|
||
|
*/
|
||
|
|
||
|
#if (defined (ENABLE_SNDFILE_WINDOWS_PROTOTYPES) && ENABLE_SNDFILE_WINDOWS_PROTOTYPES)
|
||
|
SNDFILE* sf_wchar_open (LPCWSTR wpath, int mode, SF_INFO *sfinfo) ;
|
||
|
#endif
|
||
|
|
||
|
|
||
|
|
||
|
|
||
|
/* Getting and setting of chunks from within a sound file.
|
||
|
**
|
||
|
** These functions allow the getting and setting of chunks within a sound file
|
||
|
** (for those formats which allow it).
|
||
|
**
|
||
|
** These functions fail safely. Specifically, they will not allow you to overwrite
|
||
|
** existing chunks or add extra versions of format specific reserved chunks but
|
||
|
** should allow you to retrieve any and all chunks (may not be implemented for
|
||
|
** all chunks or all file formats).
|
||
|
*/
|
||
|
|
||
|
struct SF_CHUNK_INFO
|
||
|
{ char id [64] ; /* The chunk identifier. */
|
||
|
unsigned id_size ; /* The size of the chunk identifier. */
|
||
|
unsigned datalen ; /* The size of that data. */
|
||
|
void *data ; /* Pointer to the data. */
|
||
|
} ;
|
||
|
|
||
|
typedef struct SF_CHUNK_INFO SF_CHUNK_INFO ;
|
||
|
|
||
|
/* Set the specified chunk info (must be done before any audio data is written
|
||
|
** to the file). This will fail for format specific reserved chunks.
|
||
|
** The chunk_info->data pointer must be valid until the file is closed.
|
||
|
** Returns SF_ERR_NO_ERROR on success or non-zero on failure.
|
||
|
*/
|
||
|
int sf_set_chunk (SNDFILE * sndfile, const SF_CHUNK_INFO * chunk_info) ;
|
||
|
|
||
|
/*
|
||
|
** An opaque structure to an iterator over the all chunks of a given id
|
||
|
*/
|
||
|
typedef struct SF_CHUNK_ITERATOR SF_CHUNK_ITERATOR ;
|
||
|
|
||
|
/* Get an iterator for all chunks matching chunk_info.
|
||
|
** The iterator will point to the first chunk matching chunk_info.
|
||
|
** Chunks are matching, if (chunk_info->id) matches the first
|
||
|
** (chunk_info->id_size) bytes of a chunk found in the SNDFILE* handle.
|
||
|
** If chunk_info is NULL, an iterator to all chunks in the SNDFILE* handle
|
||
|
** is returned.
|
||
|
** The values of chunk_info->datalen and chunk_info->data are ignored.
|
||
|
** If no matching chunks are found in the sndfile, NULL is returned.
|
||
|
** The returned iterator will stay valid until one of the following occurs:
|
||
|
** a) The sndfile is closed.
|
||
|
** b) A new chunk is added using sf_set_chunk().
|
||
|
** c) Another chunk iterator function is called on the same SNDFILE* handle
|
||
|
** that causes the iterator to be modified.
|
||
|
** The memory for the iterator belongs to the SNDFILE* handle and is freed when
|
||
|
** sf_close() is called.
|
||
|
*/
|
||
|
SF_CHUNK_ITERATOR *
|
||
|
sf_get_chunk_iterator (SNDFILE * sndfile, const SF_CHUNK_INFO * chunk_info) ;
|
||
|
|
||
|
/* Iterate through chunks by incrementing the iterator.
|
||
|
** Increments the iterator and returns a handle to the new one.
|
||
|
** After this call, iterator will no longer be valid, and you must use the
|
||
|
** newly returned handle from now on.
|
||
|
** The returned handle can be used to access the next chunk matching
|
||
|
** the criteria as defined in sf_get_chunk_iterator().
|
||
|
** If iterator points to the last chunk, this will free all resources
|
||
|
** associated with iterator and return NULL.
|
||
|
** The returned iterator will stay valid until sf_get_chunk_iterator_next
|
||
|
** is called again, the sndfile is closed or a new chunk us added.
|
||
|
*/
|
||
|
SF_CHUNK_ITERATOR *
|
||
|
sf_next_chunk_iterator (SF_CHUNK_ITERATOR * iterator) ;
|
||
|
|
||
|
|
||
|
/* Get the size of the specified chunk.
|
||
|
** If the specified chunk exists, the size will be returned in the
|
||
|
** datalen field of the SF_CHUNK_INFO struct.
|
||
|
** Additionally, the id of the chunk will be copied to the id
|
||
|
** field of the SF_CHUNK_INFO struct and it's id_size field will
|
||
|
** be updated accordingly.
|
||
|
** If the chunk doesn't exist chunk_info->datalen will be zero, and the
|
||
|
** id and id_size fields will be undefined.
|
||
|
** The function will return SF_ERR_NO_ERROR on success or non-zero on
|
||
|
** failure.
|
||
|
*/
|
||
|
int
|
||
|
sf_get_chunk_size (const SF_CHUNK_ITERATOR * it, SF_CHUNK_INFO * chunk_info) ;
|
||
|
|
||
|
/* Get the specified chunk data.
|
||
|
** If the specified chunk exists, up to chunk_info->datalen bytes of
|
||
|
** the chunk data will be copied into the chunk_info->data buffer
|
||
|
** (allocated by the caller) and the chunk_info->datalen field
|
||
|
** updated to reflect the size of the data. The id and id_size
|
||
|
** field will be updated according to the retrieved chunk
|
||
|
** If the chunk doesn't exist chunk_info->datalen will be zero, and the
|
||
|
** id and id_size fields will be undefined.
|
||
|
** The function will return SF_ERR_NO_ERROR on success or non-zero on
|
||
|
** failure.
|
||
|
*/
|
||
|
int
|
||
|
sf_get_chunk_data (const SF_CHUNK_ITERATOR * it, SF_CHUNK_INFO * chunk_info) ;
|
||
|
|
||
|
|
||
|
#ifdef __cplusplus
|
||
|
} /* extern "C" */
|
||
|
#endif /* __cplusplus */
|
||
|
|
||
|
#endif /* SNDFILE_H */
|
||
|
|