ref: 3def44dfa46085e1d8ccaf9688a6817853bfcee9
dir: /common/libsndfile/src/common.h/
/*
** Copyright (C) 1999-2001 Erik de Castro Lopo <[email protected]>
**
** This program 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.
**
** This program 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 this program; if not, write to the Free Software
** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef COMMON_H_INCLUDED
#define COMMON_H_INCLUDED
#ifdef _WIN32
#pragma pack(push,1)
#endif
#define SF_BUFFER_LEN (4096)
#define SF_FILENAME_LEN (256)
#define SF_HEADER_LEN (2048)
#define SF_TEXT_LEN (1024)
#define BITWIDTH2BYTES(x) (((x) + 7) / 8)
#define PEAK_CHANNEL_COUNT 16
enum
{ SF_MODE_READ = 11,
SF_MODE_WRITE = 12,
SF_MODE_RW = 13, /* Unlikely that RW will ever be implemented. */
/* PEAK chunk location. */
SF_PEAK_START = 42,
SF_PEAK_END = 43,
/* Two endian enums. */
SF_ENDIAN_LITTLE = 100,
SF_ENDIAN_BIG = 101,
/* Char type for 8 bit files. */
SF_CHARS_SIGNED = 200,
SF_CHARS_UNSIGNED = 201
} ;
/* Processor floating point capabilities. float32_get_capabilities () in
** src/float32.c returns one of the latter three values.
*/
enum
{ FLOAT_UNKNOWN = 0x00,
FLOAT_CAN_RW_LE = 0x23,
FLOAT_CAN_RW_BE = 0x34,
FLOAT_BROKEN_LE = 0x35,
FLOAT_BROKEN_BE = 0x36
} ;
enum
{ SF_FALSE = 0,
SF_TRUE = 1
} ;
/* Command values for sf_command (). These are obtained using the Python
** script sf_command.py in the top level directory of the libsndfile sources.
*/
enum
{ SFC_LIB_VERSION = 0x1048C,
SFC_READ_TEXT = 0x054F0,
SFC_WRITE_TEXT = 0x0B990,
SFC_NORM_FLOAT = 0x0914A,
SFC_NORM_DOUBLE = 0x1226D,
SFC_SCALE_MODE = 0x0A259,
SFC_ADD_PEAK = 0x96F53
} ;
/* Function pointer typedefs. */
typedef int (*func_seek) (void*, long, int) ;
typedef int (*func_short) (void*, short *ptr, unsigned int len) ;
typedef int (*func_int) (void*, int *ptr, unsigned int len) ;
typedef int (*func_float) (void*, float *ptr, unsigned int len) ;
typedef int (*func_double) (void*, double *ptr, unsigned int len, int normalize) ;
typedef int (*func_wr_hdr) (void*) ;
typedef int (*func_command) (void*, int command, void *data, int datasize) ;
typedef int (*func_close) (void*) ;
/*---------------------------------------------------------------------------------------
** PEAK_CHUNK - This chunk type is common to both AIFF and WAVE files although their
** endian encodings are different.
*/
typedef struct
{ float value ; /* signed value of peak */
unsigned int position ; /* the sample frame for the peak */
} PEAK_POS ;
typedef struct
{ unsigned int version ; /* version of the PEAK chunk */
unsigned int timestamp ; /* secs since 1/1/1970 */
PEAK_POS peak [PEAK_CHANNEL_COUNT] ; /* the peak info */
} PEAK_CHUNK ;
/*=======================================================================================
** SF_PRIVATE stuct - a pointer to this struct is passed back to the caller of the
** sf_open_XXXX functions. The caller however has no knowledge of the struct's
** contents.
*/
typedef struct
{ /* Force the compiler to double align the start of buffer. */
double buffer [SF_BUFFER_LEN/sizeof(double)] ;
char filename [SF_FILENAME_LEN] ;
/* logbuffer and logindex should only be changed within the logging functions
** of common.c
*/
char logbuffer [SF_BUFFER_LEN] ;
unsigned char header [SF_HEADER_LEN] ;
/* For storing text from header. */
char headertext [SF_TEXT_LEN] ;
/* Guard value. If this changes the buffers above have overflowed. */
int Magick ;
/* Index variables for maintaining logbuffer and header above. */
unsigned int logindex ;
unsigned int headindex, headcurrent ;
int has_text ;
FILE *file ;
int error ;
int mode ; /* Open mode : SF_MODE_READ or SF_MODE_WRITE. */
int endian ; /* File endianness : SF_ENDIAN_LITTLE or SF_ENDIAN_BIG. */
int chars ; /* Chars are SF_CHARS_SIGNED or SF_CHARS_UNSIGNED. */
int fl32_endswap ; /* Need to endswap float32s? */
SF_INFO sf ;
int has_peak ; /* Has a PEAK chunk (AIFF and WAVE) been read? */
int peak_loc ; /* Write a PEAK chunk at the start or end of the file? */
PEAK_CHUNK peak ;
long dataoffset ; /* Offset in number of bytes from beginning of file. */
long datalength ; /* Length in bytes of the audio data. */
long tailstart ; /* Offset to file tailer. */
unsigned int blockwidth ; /* Size in bytes of one set of interleaved samples. */
unsigned int bytewidth ; /* Size in bytes of one sample (one channel). */
long filelength ;
long current ;
void *fdata ;
int scale_mode ;
int norm_double ;
int norm_float ;
func_seek seek_func ;
func_short read_short ;
func_int read_int ;
func_float read_float ;
func_double read_double ;
func_short write_short ;
func_int write_int ;
func_float write_float ;
func_double write_double ;
func_wr_hdr write_header ;
func_command command ;
func_close close ;
} SF_PRIVATE ;
enum
{ SFE_NO_ERROR = 0,
SFE_BAD_FILE,
SFE_OPEN_FAILED,
SFE_BAD_OPEN_FORMAT,
SFE_BAD_SNDFILE_PTR,
SFE_BAD_SF_INFO_PTR,
SFE_BAD_INT_FD,
SFE_BAD_INT_PTR,
SFE_MALLOC_FAILED,
SFE_BAD_SEEK,
SFE_NOT_SEEKABLE,
SFE_UNIMPLEMENTED,
SFE_BAD_READ_ALIGN,
SFE_BAD_WRITE_ALIGN,
SFE_UNKNOWN_FORMAT,
SFE_NOT_READMODE,
SFE_NOT_WRITEMODE,
SFE_BAD_MODE_RW,
SFE_BAD_SF_INFO,
SFE_SHORT_READ,
SFE_SHORT_WRITE,
SFE_INTERNAL,
SFE_BAD_CONTROL_CMD,
SFE_WAV_NO_RIFF,
SFE_WAV_NO_WAVE,
SFE_WAV_NO_FMT,
SFE_WAV_FMT_SHORT,
SFE_WAV_FMT_TOO_BIG,
SFE_WAV_BAD_FACT,
SFE_WAV_BAD_PEAK,
SFE_WAV_PEAK_B4_FMT,
SFE_WAV_BAD_FORMAT,
SFE_WAV_BAD_BLOCKALIGN,
SFE_WAV_NO_DATA,
SFE_WAV_ADPCM_NOT4BIT,
SFE_WAV_ADPCM_CHANNELS,
SFE_WAV_GSM610_FORMAT,
SFE_WAV_UNKNOWN_CHUNK,
SFE_AIFF_NO_FORM,
SFE_AIFF_AIFF_NO_FORM,
SFE_AIFF_COMM_NO_FORM,
SFE_AIFF_SSND_NO_COMM,
SFE_AIFF_UNKNOWN_CHUNK,
SFE_AIFF_COMM_CHUNK_SIZE,
SFE_AIFF_BAD_COMM_CHUNK,
SFE_AIFF_PEAK_B4_COMM,
SFE_AIFF_BAD_PEAK,
SFE_AIFF_NO_SSND,
SFE_AIFF_NO_DATA,
SFE_AU_UNKNOWN_FORMAT,
SFE_AU_NO_DOTSND,
SFE_RAW_READ_BAD_SPEC,
SFE_RAW_BAD_BITWIDTH,
SFE_PAF_NO_MARKER,
SFE_PAF_VERSION,
SFE_PAF_UNKNOWN_FORMAT,
SFE_PAF_SHORT_HEADER,
SFE_SVX_NO_FORM,
SFE_SVX_NO_BODY,
SFE_SVX_NO_DATA,
SFE_SVX_BAD_COMP,
SFE_NIST_BAD_HEADER,
SFE_NIST_BAD_ENCODING,
SFE_SMTD_NO_SEKD,
SFE_SMTD_NO_SAMR,
SFE_VOC_NO_CREATIVE,
SFE_VOC_BAD_VERSION,
SFE_VOC_BAD_MARKER,
SFE_IRCAM_NO_MARKER,
SFE_IRCAM_BAD_CHANNELS,
SFE_IRCAM_UNKNOWN_FORMAT,
SFE_MAX_ERROR /* This must be last in list. */
} ;
/* Get the float32 capability of the processor at run time.
** Implemented in src/float32.c.
*/
int float32_get_capability (int endianness) ;
float float32_read (unsigned char *cptr) ;
void float32_write (float in, unsigned char *out) ;
/* Endian swapping routines implemented in src/common.h. */
void endswap_short_array (short *ptr, int len) ;
void endswap_int_array (int *ptr, int len) ;
/* Functions for writing to the internal logging buffer. */
void psf_log_printf (SF_PRIVATE *psf, char *format, ...) ;
void psf_log_SF_INFO (SF_PRIVATE *psf) ;
/* Functions used when writing file headers. */
int psf_binheader_writef (SF_PRIVATE *psf, char *format, ...) ;
void psf_asciiheader_printf (SF_PRIVATE *psf, char *format, ...) ;
/* Functions used when reading file headers. */
int psf_binheader_readf (SF_PRIVATE *psf, char const *format, ...) ;
/* Functions used in the write function for updating the peak chunk. */
void peak_update_short (SF_PRIVATE *psf, short *ptr, size_t items) ;
void peak_update_int (SF_PRIVATE *psf, int *ptr, size_t items) ;
void peak_update_double (SF_PRIVATE *psf, double *ptr, size_t items) ;
/* Init functions for a number of common data encodings. */
int pcm_read_init (SF_PRIVATE *psf) ;
int pcm_write_init (SF_PRIVATE *psf) ;
int ulaw_read_init (SF_PRIVATE *psf) ;
int ulaw_write_init (SF_PRIVATE *psf) ;
int alaw_read_init (SF_PRIVATE *psf) ;
int alaw_write_init (SF_PRIVATE *psf) ;
int float32_read_init (SF_PRIVATE *psf) ;
int float32_write_init (SF_PRIVATE *psf) ;
/* Functions for reading and writing different file formats.*/
int aiff_open_read (SF_PRIVATE *psf) ;
int aiff_open_write (SF_PRIVATE *psf) ;
int au_open_read (SF_PRIVATE *psf) ;
int au_nh_open_read (SF_PRIVATE *psf) ; /* Headerless version of AU. */
int au_open_write (SF_PRIVATE *psf) ;
int wav_open_read (SF_PRIVATE *psf) ;
int wav_open_write (SF_PRIVATE *psf) ;
int raw_open_read (SF_PRIVATE *psf) ;
int raw_open_write (SF_PRIVATE *psf) ;
int paf_open_read (SF_PRIVATE *psf) ;
int paf_open_write (SF_PRIVATE *psf) ;
int svx_open_read (SF_PRIVATE *psf) ;
int svx_open_write (SF_PRIVATE *psf) ;
int nist_open_read (SF_PRIVATE *psf) ;
int nist_open_write (SF_PRIVATE *psf) ;
int smpltd_open_read (SF_PRIVATE *psf) ;
int smpltd_open_write (SF_PRIVATE *psf) ;
int voc_open_read (SF_PRIVATE *psf) ;
int voc_open_write (SF_PRIVATE *psf) ;
int rx2_open_read (SF_PRIVATE *psf) ;
int rx2_open_write (SF_PRIVATE *psf) ;
int ircam_open_read (SF_PRIVATE *psf) ;
int ircam_open_write (SF_PRIVATE *psf) ;
/* Win32 does seem to have snprintf and vsnprintf but prepends
** the names with an underscore. Why?
*/
#ifdef WIN32
#define snprintf _snprintf
#define vsnprintf _vsnprintf
#endif
#ifdef _WIN32
#pragma pack(pop,1)
#endif
#endif /* COMMON_H_INCLUDED */