ref: 46d58fc082a8537f9de79342cd7d7d24974c984d
dir: /common/libsndfile/src/wav.c/
/*
** Copyright (C) 1999-2002 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.
*/
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <ctype.h>
#include <time.h>
#include "sndfile.h"
#include "config.h"
#include "sfendian.h"
#include "common.h"
#include "wav_w64.h"
/*------------------------------------------------------------------------------
* Macros to handle big/little endian issues.
*/
#define RIFF_MARKER (MAKE_MARKER ('R', 'I', 'F', 'F'))
#define WAVE_MARKER (MAKE_MARKER ('W', 'A', 'V', 'E'))
#define fmt_MARKER (MAKE_MARKER ('f', 'm', 't', ' '))
#define data_MARKER (MAKE_MARKER ('d', 'a', 't', 'a'))
#define fact_MARKER (MAKE_MARKER ('f', 'a', 'c', 't'))
#define PEAK_MARKER (MAKE_MARKER ('P', 'E', 'A', 'K'))
#define cue_MARKER (MAKE_MARKER ('c', 'u', 'e', ' '))
#define LIST_MARKER (MAKE_MARKER ('L', 'I', 'S', 'T'))
#define slnt_MARKER (MAKE_MARKER ('s', 'l', 'n', 't'))
#define wavl_MARKER (MAKE_MARKER ('w', 'a', 'v', 'l'))
#define INFO_MARKER (MAKE_MARKER ('I', 'N', 'F', 'O'))
#define plst_MARKER (MAKE_MARKER ('p', 'l', 's', 't'))
#define adtl_MARKER (MAKE_MARKER ('a', 'd', 't', 'l'))
#define labl_MARKER (MAKE_MARKER ('l', 'a', 'b', 'l'))
#define ltxt_MARKER (MAKE_MARKER ('l', 't', 'x', 't'))
#define note_MARKER (MAKE_MARKER ('n', 'o', 't', 'e'))
#define smpl_MARKER (MAKE_MARKER ('s', 'm', 'p', 'l'))
#define bext_MARKER (MAKE_MARKER ('b', 'e', 'x', 't'))
#define MEXT_MARKER (MAKE_MARKER ('M', 'E', 'X', 'T'))
#define DISP_MARKER (MAKE_MARKER ('D', 'I', 'S', 'P'))
#define acid_MARKER (MAKE_MARKER ('a', 'c', 'i', 'd'))
#define PAD_MARKER (MAKE_MARKER ('P', 'A', 'D', ' '))
#define adtl_MARKER (MAKE_MARKER ('a', 'd', 't', 'l'))
#define afsp_MARKER (MAKE_MARKER ('a', 'f', 's', 'p'))
#define ISFT_MARKER (MAKE_MARKER ('I', 'S', 'F', 'T'))
#define ICRD_MARKER (MAKE_MARKER ('I', 'C', 'R', 'D'))
#define ICOP_MARKER (MAKE_MARKER ('I', 'C', 'O', 'P'))
#define IART_MARKER (MAKE_MARKER ('I', 'A', 'R', 'T'))
#define INAM_MARKER (MAKE_MARKER ('I', 'N', 'A', 'M'))
#define IENG_MARKER (MAKE_MARKER ('I', 'E', 'N', 'G'))
#define IART_MARKER (MAKE_MARKER ('I', 'A', 'R', 'T'))
#define ICOP_MARKER (MAKE_MARKER ('I', 'C', 'O', 'P'))
#define IPRD_MARKER (MAKE_MARKER ('I', 'P', 'R', 'D'))
#define ISRC_MARKER (MAKE_MARKER ('I', 'S', 'R', 'C'))
#define ISBJ_MARKER (MAKE_MARKER ('I', 'S', 'B', 'J'))
#define ICMT_MARKER (MAKE_MARKER ('I', 'C', 'M', 'T'))
enum
{ HAVE_RIFF = 0x01,
HAVE_WAVE = 0x02,
HAVE_fmt = 0x04,
HAVE_fact = 0x08,
HAVE_PEAK = 0x10,
HAVE_data = 0x20
} ;
/*------------------------------------------------------------------------------
* Private static functions.
*/
static int wav_read_header (SF_PRIVATE *psf, int *blockalign, int *samplesperblock) ;
static int wav_write_header (SF_PRIVATE *psf) ;
static int wav_write_tailer (SF_PRIVATE *psf) ;
static int wav_close (SF_PRIVATE *psf) ;
static int wav_subchunk_parse (SF_PRIVATE *psf, int chunk) ;
/*------------------------------------------------------------------------------
** Public function.
*/
int
wav_open (SF_PRIVATE *psf)
{ int subformat, error, blockalign = 0, samplesperblock = 0 ;
if (psf->mode == SFM_READ || (psf->mode == SFM_RDWR && psf->filelength > 0))
{ if ((error = wav_read_header (psf, &blockalign, &samplesperblock)))
return error ;
};
subformat = psf->sf.format & SF_FORMAT_SUBMASK ;
if (psf->mode == SFM_WRITE || psf->mode == SFM_RDWR)
{ if ((psf->sf.format & SF_FORMAT_TYPEMASK) != SF_FORMAT_WAV)
return SFE_BAD_OPEN_FORMAT ;
psf->endian = SF_ENDIAN_LITTLE ; /* All WAV files are little endian. */
psf->blockwidth = psf->bytewidth * psf->sf.channels ;
if (subformat == SF_FORMAT_IMA_ADPCM || subformat == SF_FORMAT_MS_ADPCM)
{ blockalign = wav_w64_srate2blocksize (psf->sf.samplerate * psf->sf.channels) ;
samplesperblock = -1 ;
/* FIXME : This block must go */
psf->filelength = SF_MAX_UINT ;
psf->datalength = SF_MAX_UINT ;
if (psf->sf.samples <= 0)
psf->sf.samples = (psf->blockwidth) ? SF_MAX_COUNT / psf->blockwidth : SF_MAX_COUNT ;
/* EMXIF : This block must go */
} ;
if ((error = wav_write_header (psf)))
return error ;
psf->write_header = wav_write_header ;
} ;
psf->close = wav_close ;
switch (subformat)
{ case SF_FORMAT_PCM_U8 :
psf->chars = SF_CHARS_UNSIGNED ;
error = pcm_init (psf) ;
break ;
case SF_FORMAT_PCM_16 :
case SF_FORMAT_PCM_24 :
case SF_FORMAT_PCM_32 :
error = pcm_init (psf) ;
break ;
case SF_FORMAT_FLOAT :
error = float32_init (psf) ;
break ;
case SF_FORMAT_DOUBLE :
error = double64_init (psf) ;
break ;
case SF_FORMAT_ULAW :
error = ulaw_init (psf) ;
break ;
case SF_FORMAT_ALAW :
error = alaw_init (psf) ;
break ;
case SF_FORMAT_IMA_ADPCM :
error = wav_w64_ima_init (psf, blockalign, samplesperblock) ;
break ;
case SF_FORMAT_MS_ADPCM :
error = wav_w64_msadpcm_init (psf, blockalign, samplesperblock) ;
break ;
case SF_FORMAT_GSM610 :
error = gsm610_init (psf) ;
break ;
default : return SFE_UNIMPLEMENTED ;
} ;
return error ;
} /* wav_open */
/*=========================================================================
** Private functions.
*/
static int
wav_read_header (SF_PRIVATE *psf, int *blockalign, int *samplesperblock)
{ WAV_FMT wav_fmt ;
FACT_CHUNK fact_chunk ;
int dword, marker, RIFFsize ;
int parsestage = 0, error, format = 0 ;
char *cptr ;
/* Set position to start of file to begin reading header. */
psf_binheader_readf (psf, "p", 0) ;
while (1)
{ psf_binheader_readf (psf, "m", &marker) ;
switch (marker)
{ case RIFF_MARKER :
if (parsestage)
return SFE_WAV_NO_RIFF ;
psf_binheader_readf (psf, "e4", &RIFFsize) ;
if (psf->filelength < RIFFsize + 2 * SIGNED_SIZEOF (dword))
{ dword = psf->filelength - 2 * SIGNED_SIZEOF (dword);
psf_log_printf (psf, "RIFF : %d (should be %d)\n", RIFFsize, dword) ;
RIFFsize = dword ;
}
else
psf_log_printf (psf, "RIFF : %d\n", RIFFsize) ;
parsestage |= HAVE_RIFF ;
break ;
case WAVE_MARKER :
if ((parsestage & HAVE_RIFF) != HAVE_RIFF)
return SFE_WAV_NO_WAVE ;
psf_log_printf (psf, "WAVE\n") ;
parsestage |= HAVE_WAVE ;
break ;
case fmt_MARKER :
if ((parsestage & (HAVE_RIFF | HAVE_WAVE)) != (HAVE_RIFF | HAVE_WAVE))
return SFE_WAV_NO_FMT ;
psf_binheader_readf (psf, "e4", &dword) ;
psf_log_printf (psf, "fmt : %d\n", dword) ;
if ((error = wav_w64_read_fmt_chunk (psf, &wav_fmt, dword)))
return error ;
format = wav_fmt.format ;
parsestage |= HAVE_fmt ;
break ;
case data_MARKER :
if ((parsestage & (HAVE_RIFF | HAVE_WAVE | HAVE_fmt)) != (HAVE_RIFF | HAVE_WAVE | HAVE_fmt))
return SFE_WAV_NO_DATA ;
psf_binheader_readf (psf, "e4", &dword) ;
psf->datalength = dword ;
psf->dataoffset = psf_ftell (psf->filedes) ;
if (psf->datalength > psf->filelength - psf->dataoffset)
{ psf_log_printf (psf, "data : %d (should be %d)\n", psf->datalength, psf->filelength - psf->dataoffset) ;
psf->datalength = psf->filelength - psf->dataoffset ;
}
else
psf_log_printf (psf, "data : %d\n", psf->datalength) ;
if (format == WAVE_FORMAT_MS_ADPCM && psf->datalength % 2)
{ psf->datalength ++ ;
psf_log_printf (psf, "*** Data length odd. Increasing it by 1.\n") ;
} ;
parsestage |= HAVE_data ;
if (! psf->sf.seekable)
break ;
/* Seek past data and continue reading header. */
psf_fseek (psf->filedes, psf->datalength, SEEK_CUR) ;
dword = psf_ftell (psf->filedes) ;
if (dword != (sf_count_t) (psf->dataoffset + psf->datalength))
psf_log_printf (psf, "*** psf_fseek past end error ***\n", dword, psf->dataoffset + psf->datalength) ;
break ;
case fact_MARKER :
if ((parsestage & (HAVE_RIFF | HAVE_WAVE | HAVE_fmt)) != (HAVE_RIFF | HAVE_WAVE | HAVE_fmt))
return SFE_WAV_BAD_FACT ;
psf_binheader_readf (psf, "e44", &dword, &(fact_chunk.samples)) ;
if (dword > SIGNED_SIZEOF (fact_chunk))
psf_binheader_readf (psf, "j", (int) (dword - SIGNED_SIZEOF (fact_chunk))) ;
if (dword)
psf_log_printf (psf, "%D : %d\n", marker, dword) ;
else
psf_log_printf (psf, "%D : %d (should not be zero)\n", marker, dword) ;
psf_log_printf (psf, " samples : %d\n", fact_chunk.samples) ;
parsestage |= HAVE_fact ;
break ;
case PEAK_MARKER :
if ((parsestage & (HAVE_RIFF | HAVE_WAVE | HAVE_fmt)) != (HAVE_RIFF | HAVE_WAVE | HAVE_fmt))
return SFE_WAV_PEAK_B4_FMT ;
psf_binheader_readf (psf, "e4", &dword) ;
psf_log_printf (psf, "%D : %d\n", marker, dword) ;
if (dword > SIGNED_SIZEOF (psf->peak))
{ psf_binheader_readf (psf, "j", dword) ;
psf_log_printf (psf, "*** File PEAK chunk bigger than sizeof (PEAK_CHUNK).\n") ;
return SFE_WAV_BAD_PEAK ;
} ;
if (dword != SIGNED_SIZEOF (psf->peak) - SIGNED_SIZEOF (psf->peak.peak) + psf->sf.channels * SIGNED_SIZEOF (PEAK_POS))
{ psf_binheader_readf (psf, "j", dword) ;
psf_log_printf (psf, "*** File PEAK chunk size doesn't fit with number of channels.\n") ;
return SFE_WAV_BAD_PEAK ;
} ;
psf_binheader_readf (psf, "e44", &(psf->peak.version), &(psf->peak.timestamp)) ;
if (psf->peak.version != 1)
psf_log_printf (psf, " version : %d *** (should be version 1)\n", psf->peak.version) ;
else
psf_log_printf (psf, " version : %d\n", psf->peak.version) ;
psf_log_printf (psf, " time stamp : %d\n", psf->peak.timestamp) ;
psf_log_printf (psf, " Ch Position Value\n") ;
cptr = (char *) psf->buffer ;
for (dword = 0 ; dword < psf->sf.channels ; dword++)
{ psf_binheader_readf (psf, "ef4", &(psf->peak.peak[dword].value),
&(psf->peak.peak[dword].position)) ;
LSF_SNPRINTF (cptr, sizeof (psf->buffer), " %2d %-12d %g\n",
dword, psf->peak.peak[dword].position, psf->peak.peak[dword].value) ;
cptr [sizeof (psf->buffer) - 1] = 0 ;
psf_log_printf (psf, cptr) ;
};
psf->has_peak = SF_TRUE ;
break ;
case INFO_MARKER :
case LIST_MARKER :
if ((error = wav_subchunk_parse (psf, marker)))
return error ;
break ;
case bext_MARKER :
case cue_MARKER :
case DISP_MARKER :
case MEXT_MARKER :
psf_binheader_readf (psf, "e4", &dword);
psf_log_printf (psf, "%D : %d\n", marker, dword) ;
dword += (dword & 1) ;
psf_binheader_readf (psf, "j", dword) ;
break ;
case smpl_MARKER :
case acid_MARKER :
case PAD_MARKER :
case afsp_MARKER :
psf_binheader_readf (psf, "e4", &dword);
psf_log_printf (psf, " *** %D : %d\n", marker, dword) ;
dword += (dword & 1) ;
psf_binheader_readf (psf, "j", dword) ;
break ;
default :
if (isprint ((marker >> 24) & 0xFF) && isprint ((marker >> 16) & 0xFF)
&& isprint ((marker >> 8) & 0xFF) && isprint (marker & 0xFF))
{ psf_binheader_readf (psf, "e4", &dword);
psf_log_printf (psf, "*** %D : %d (unknown marker)\n", marker, dword) ;
psf_binheader_readf (psf, "j", dword);
break ;
} ;
if (psf_ftell (psf->filedes) & 0x03)
{ psf_log_printf (psf, " Unknown chunk marker at position %d. Resynching.\n", dword - 4) ;
psf_binheader_readf (psf, "j", -3) ;
break ;
} ;
psf_log_printf (psf, "*** Unknown chunk marker : %X. Exiting parser.\n", marker) ;
break ;
} ; /* switch (dword) */
if (! psf->sf.seekable && (parsestage & HAVE_data))
break ;
if (psf_ferror (psf->filedes))
{ psf_log_printf (psf, "*** Error on file handle. ***\n", marker) ;
psf_fclearerr (psf->filedes) ;
break ;
} ;
if (psf_ftell (psf->filedes) >= (int) (psf->filelength - (2 * sizeof (dword))))
break ;
if (psf->logindex >= sizeof (psf->logbuffer) - 2)
return SFE_LOG_OVERRUN ;
} ; /* while (1) */
if (! psf->dataoffset)
return SFE_WAV_NO_DATA ;
psf->endian = SF_ENDIAN_LITTLE ; /* All WAV files are little endian. */
psf_fseek (psf->filedes, psf->dataoffset, SEEK_SET) ;
psf->close = wav_close ;
if (psf->blockwidth)
{ if (psf->filelength - psf->dataoffset < psf->datalength)
psf->sf.samples = (psf->filelength - psf->dataoffset) / psf->blockwidth ;
else
psf->sf.samples = psf->datalength / psf->blockwidth ;
} ;
switch (format)
{ case WAVE_FORMAT_PCM :
case WAVE_FORMAT_EXTENSIBLE :
psf->sf.format = SF_FORMAT_WAV | u_bitwidth_to_subformat (psf->bytewidth * 8) ;
break ;
case WAVE_FORMAT_MULAW :
psf->sf.format = (SF_FORMAT_WAV | SF_FORMAT_ULAW) ;
break ;
case WAVE_FORMAT_ALAW :
psf->sf.format = (SF_FORMAT_WAV | SF_FORMAT_ALAW) ;
break ;
case WAVE_FORMAT_MS_ADPCM :
psf->sf.format = (SF_FORMAT_WAV | SF_FORMAT_MS_ADPCM) ;
*blockalign = wav_fmt.msadpcm.blockalign ;
*samplesperblock = wav_fmt.msadpcm.samplesperblock ;
break ;
case WAVE_FORMAT_IMA_ADPCM :
psf->sf.format = (SF_FORMAT_WAV | SF_FORMAT_IMA_ADPCM) ;
*blockalign = wav_fmt.ima.blockalign ;
*samplesperblock = wav_fmt.ima.samplesperblock ;
break ;
case WAVE_FORMAT_GSM610 :
psf->sf.format = (SF_FORMAT_WAV | SF_FORMAT_GSM610) ;
break ;
case WAVE_FORMAT_IEEE_FLOAT :
psf->sf.format = SF_FORMAT_WAV ;
psf->sf.format |= (psf->bytewidth == 8) ? SF_FORMAT_DOUBLE : SF_FORMAT_FLOAT ;
break ;
default : return SFE_UNIMPLEMENTED ;
} ;
return 0 ;
} /* wav_read_header */
static int
wav_write_header (SF_PRIVATE *psf)
{ int fmt_size, k, subformat, add_fact_chunk = SF_FALSE ;
/* Reset the current header length to zero. */
psf->header [0] = 0 ;
psf->headindex = 0 ;
psf_fseek (psf->filedes, 0, SEEK_SET) ;
/* RIFF marker, length, WAVE and 'fmt ' markers. */
psf_binheader_writef (psf, "etm8mm", RIFF_MARKER, psf->filelength - 8, WAVE_MARKER, fmt_MARKER) ;
subformat = psf->sf.format & SF_FORMAT_SUBMASK ;
switch (subformat)
{ case SF_FORMAT_PCM_U8 :
case SF_FORMAT_PCM_16 :
case SF_FORMAT_PCM_24 :
case SF_FORMAT_PCM_32 :
fmt_size = 2 + 2 + 4 + 4 + 2 + 2 ;
/* fmt : format, channels, samplerate */
psf_binheader_writef (psf, "e4224", fmt_size, WAVE_FORMAT_PCM, psf->sf.channels, psf->sf.samplerate) ;
/* fmt : bytespersec */
psf_binheader_writef (psf, "e4", psf->sf.samplerate * psf->bytewidth * psf->sf.channels) ;
/* fmt : blockalign, bitwidth */
psf_binheader_writef (psf, "e22", psf->bytewidth * psf->sf.channels, psf->bytewidth * 8) ;
break ;
case SF_FORMAT_FLOAT :
case SF_FORMAT_DOUBLE :
/* Add the peak chunk to floating point files. */
psf->has_peak = SF_TRUE ;
psf->peak_loc = SF_PEAK_START ;
fmt_size = 2 + 2 + 4 + 4 + 2 + 2 ;
/* fmt : format, channels, samplerate */
psf_binheader_writef (psf, "e4224", fmt_size, WAVE_FORMAT_IEEE_FLOAT, psf->sf.channels, psf->sf.samplerate) ;
/* fmt : bytespersec */
psf_binheader_writef (psf, "e4", psf->sf.samplerate * psf->bytewidth * psf->sf.channels) ;
/* fmt : blockalign, bitwidth */
psf_binheader_writef (psf, "e22", psf->bytewidth * psf->sf.channels, psf->bytewidth * 8) ;
add_fact_chunk = SF_TRUE ;
break ;
case SF_FORMAT_ULAW :
fmt_size = 2 + 2 + 4 + 4 + 2 + 2 ;
/* fmt : format, channels, samplerate */
psf_binheader_writef (psf, "e4224", fmt_size, WAVE_FORMAT_MULAW, psf->sf.channels, psf->sf.samplerate) ;
/* fmt : bytespersec */
psf_binheader_writef (psf, "e4", psf->sf.samplerate * psf->bytewidth * psf->sf.channels) ;
/* fmt : blockalign, bitwidth */
psf_binheader_writef (psf, "e22", psf->bytewidth * psf->sf.channels, 8) ;
add_fact_chunk = SF_TRUE ;
break ;
case SF_FORMAT_ALAW :
fmt_size = 2 + 2 + 4 + 4 + 2 + 2 ;
/* fmt : format, channels, samplerate */
psf_binheader_writef (psf, "e4224", fmt_size, WAVE_FORMAT_ALAW, psf->sf.channels, psf->sf.samplerate) ;
/* fmt : bytespersec */
psf_binheader_writef (psf, "e4", psf->sf.samplerate * psf->bytewidth * psf->sf.channels) ;
/* fmt : blockalign, bitwidth */
psf_binheader_writef (psf, "e22", psf->bytewidth * psf->sf.channels, 8) ;
add_fact_chunk = SF_TRUE ;
break ;
case SF_FORMAT_IMA_ADPCM :
{ int blockalign, samplesperblock, bytespersec ;
blockalign = wav_w64_srate2blocksize (psf->sf.samplerate * psf->sf.channels) ;
samplesperblock = 2 * (blockalign - 4 * psf->sf.channels) / psf->sf.channels + 1 ;
bytespersec = (psf->sf.samplerate * blockalign) / samplesperblock ;
/* fmt chunk. */
fmt_size = 2 + 2 + 4 + 4 + 2 + 2 + 2 + 2 ;
/* fmt : size, WAV format type, channels, samplerate, bytespersec */
psf_binheader_writef (psf, "e42244", fmt_size, WAVE_FORMAT_IMA_ADPCM,
psf->sf.channels, psf->sf.samplerate, bytespersec) ;
/* fmt : blockalign, bitwidth, extrabytes, samplesperblock. */
psf_binheader_writef (psf, "e2222", blockalign, 4, 2, samplesperblock) ;
} ;
add_fact_chunk = SF_TRUE ;
break ;
case SF_FORMAT_MS_ADPCM :
{ int blockalign, samplesperblock, bytespersec, extrabytes ;
blockalign = wav_w64_srate2blocksize (psf->sf.samplerate * psf->sf.channels) ;
samplesperblock = 2 + 2 * (blockalign - 7 * psf->sf.channels) / psf->sf.channels ;
bytespersec = (psf->sf.samplerate * blockalign) / samplesperblock ;
/* fmt chunk. */
extrabytes = 2 + 2 + MSADPCM_ADAPT_COEFF_COUNT * (2 + 2) ;
fmt_size = 2 + 2 + 4 + 4 + 2 + 2 + 2 + extrabytes ;
/* fmt : size, WAV format type, channels. */
psf_binheader_writef (psf, "e422", fmt_size, WAVE_FORMAT_MS_ADPCM, psf->sf.channels) ;
/* fmt : samplerate, bytespersec. */
psf_binheader_writef (psf, "e44", psf->sf.samplerate, bytespersec) ;
/* fmt : blockalign, bitwidth, extrabytes, samplesperblock. */
psf_binheader_writef (psf, "e22222", blockalign, 4, extrabytes, samplesperblock, 7) ;
msadpcm_write_adapt_coeffs (psf) ;
} ;
add_fact_chunk = SF_TRUE ;
break ;
case SF_FORMAT_GSM610 :
{ int blockalign, samplesperblock, bytespersec ;
blockalign = WAV_W64_GSM610_BLOCKSIZE ;
samplesperblock = WAV_W64_GSM610_SAMPLES ;
bytespersec = (psf->sf.samplerate * blockalign) / samplesperblock ;
/* fmt chunk. */
fmt_size = 2 + 2 + 4 + 4 + 2 + 2 + 2 + 2 ;
/* fmt : size, WAV format type, channels. */
psf_binheader_writef (psf, "e422", fmt_size, WAVE_FORMAT_GSM610, psf->sf.channels) ;
/* fmt : samplerate, bytespersec. */
psf_binheader_writef (psf, "e44", psf->sf.samplerate, bytespersec) ;
/* fmt : blockalign, bitwidth, extrabytes, samplesperblock. */
psf_binheader_writef (psf, "e2222", blockalign, 0, 2, samplesperblock) ;
} ;
add_fact_chunk = SF_TRUE ;
break ;
default : return SFE_UNIMPLEMENTED ;
} ;
if (add_fact_chunk)
psf_binheader_writef (psf, "em44", fact_MARKER, 4, psf->sf.samples) ;
if (psf->has_peak && psf->peak_loc == SF_PEAK_START)
{ psf_binheader_writef (psf, "em4", PEAK_MARKER,
sizeof (psf->peak) - sizeof (psf->peak.peak) + psf->sf.channels * sizeof (PEAK_POS)) ;
psf_binheader_writef (psf, "e44", 1, time (NULL)) ;
for (k = 0 ; k < psf->sf.channels ; k++)
psf_binheader_writef (psf, "ef4", psf->peak.peak[k].value, psf->peak.peak[k].position) ;
} ;
psf_binheader_writef (psf, "etm8", data_MARKER, psf->datalength) ;
psf_fwrite (psf->header, psf->headindex, 1, psf->filedes) ;
psf->dataoffset = psf->headindex ;
return 0 ;
} /* wav_write_header */
static int
wav_write_tailer (SF_PRIVATE *psf)
{ int k ;
/* Reset the current header buffer length to zero. */
psf->header [0] = 0 ;
psf->headindex = 0 ;
psf_fseek (psf->filedes, 0, SEEK_END) ;
if (psf->has_peak && psf->peak_loc == SF_PEAK_END)
{ psf_binheader_writef (psf, "em4", PEAK_MARKER,
sizeof (psf->peak) - sizeof (psf->peak.peak) + psf->sf.channels * sizeof (PEAK_POS)) ;
psf_binheader_writef (psf, "e44", 1, time (NULL)) ;
for (k = 0 ; k < psf->sf.channels ; k++)
psf_binheader_writef (psf, "ef4", psf->peak.peak[k].value, psf->peak.peak[k].position) ; /* XXXXX */
} ;
if (psf->headindex > 0)
psf_fwrite (psf->header, psf->headindex, 1, psf->filedes) ;
return 0 ;
} /* wav_write_tailer */
static int
wav_close (SF_PRIVATE *psf)
{
if (psf->mode == SFM_WRITE || psf->mode == SFM_RDWR)
{ /* Now we know for certain the length of the file we can
* re-write correct values for the RIFF and data chunks.
*/
psf_fseek (psf->filedes, 0, SEEK_END) ;
psf->dataend = psf_ftell (psf->filedes) ;
wav_write_tailer (psf) ;
psf_fseek (psf->filedes, 0, SEEK_END) ;
psf->filelength = psf_ftell (psf->filedes) ;
psf_fseek (psf->filedes, 0, SEEK_SET) ;
psf->datalength = psf->filelength - psf->dataoffset - (psf->filelength - psf->dataend) ;
psf->sf.samples = psf->datalength / (psf->bytewidth * psf->sf.channels) ;
wav_write_header (psf) ;
} ;
return 0 ;
} /* wav_close */
static int
wav_subchunk_parse (SF_PRIVATE *psf, int chunk)
{ sf_count_t current_pos ;
int dword, bytesread, length ;
current_pos = psf_fseek (psf->filedes, 0, SEEK_CUR) ;
bytesread = psf_binheader_readf (psf, "e4", &length);
if (current_pos + length > psf->filelength)
{ psf_log_printf (psf, "%D : %d (should be %d)\n", chunk, length, (int) (psf->filelength - current_pos)) ;
length = psf->filelength - current_pos ;
}
else
psf_log_printf (psf, "%D : %d\n", chunk, length) ;
while (bytesread < length)
{ bytesread += psf_binheader_readf (psf, "m", &chunk);
switch (chunk)
{ case adtl_MARKER :
case INFO_MARKER :
/* These markers don't contain anything. */
psf_log_printf (psf, " %D\n", chunk) ;
break ;
case data_MARKER:
psf_log_printf (psf, " %D inside a LIST block??? Backing out.\n", chunk) ;
/* Jump back four bytes and return to caller. */
psf_binheader_readf (psf, "j", -4);
return 0 ;
case IART_MARKER :
case ICMT_MARKER :
case ICOP_MARKER :
case ICRD_MARKER :
case IENG_MARKER :
case INAM_MARKER :
case IPRD_MARKER :
case ISBJ_MARKER :
case ISFT_MARKER :
case ISRC_MARKER :
bytesread += psf_binheader_readf (psf, "e4", &dword);
dword += (dword & 1) ;
if (dword > SIGNED_SIZEOF (psf->buffer))
{ psf_log_printf (psf, " *** %D : %d (too big)\n", chunk, dword) ;
return SFE_INTERNAL ;
} ;
bytesread += psf_binheader_readf (psf, "b", psf->buffer, dword) ;
psf->buffer [dword - 1] = 0 ;
psf_log_printf (psf, " %D : %s\n", chunk, psf->buffer) ;
break ;
case labl_MARKER :
case ltxt_MARKER :
case note_MARKER :
bytesread += psf_binheader_readf (psf, "e4", &dword);
dword += (dword & 1) ;
psf_binheader_readf (psf, "j", dword) ;
bytesread += dword ;
psf_log_printf (psf, " %D : %d\n", chunk, dword) ;
break ;
default :
bytesread += psf_binheader_readf (psf, "e4", &dword);
dword += (dword & 1) ;
bytesread += psf_binheader_readf (psf, "j", dword) ;
psf_log_printf (psf, " *** %D : %d\n", chunk, dword) ;
if (dword > length)
return 0 ;
break ;
} ;
if (psf->logindex >= sizeof (psf->logbuffer) - 2)
return SFE_LOG_OVERRUN ;
} ;
return 0 ;
} /* wav_subchunk_parse */