ref: 46d58fc082a8537f9de79342cd7d7d24974c984d
dir: /common/libsndfile/src/w64.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"
/*------------------------------------------------------------------------------
** W64 files use 16 byte markers as opposed to the four byte marker of
** WAV files.
** For comparison purposes, an integer is required, so make an integer
** hash for the 16 bytes using MAKE_HASH16 macro, but also create a 16
** byte array containing the complete 16 bytes required when writing the
** header.
*/
#define MAKE_HASH16(x0,x1,x2,x3,x4,x5,x6,x7,x8,x9,xa,xb,xc,xd,xe,xf) \
( (x0) ^((x1)<< 1)^((x2)<< 2)^((x3)<< 3)^ \
((x4)<< 4)^((x5)<< 5)^((x6)<< 6)^((x7)<< 7)^ \
((x8)<< 8)^((x9)<< 9)^((xa)<<10)^((xb)<<11)^ \
((xc)<<12)^((xd)<<13)^((xe)<<14)^((xf)<<15) )
#define MAKE_MARKER16(name,x0,x1,x2,x3,x4,x5,x6,x7,x8,x9,xa,xb,xc,xd,xe,xf) \
static unsigned char name [16] = { (x0),(x1),(x2),(x3),(x4),(x5), \
(x6),(x7),(x8),(x9),(xa),(xb),(xc),(xd),(xe),(xf) }
#define riff_HASH16 MAKE_HASH16 ('r', 'i', 'f', 'f', 0x2E, 0x91, 0xCF, 0x11, 0xA5, \
0xD6, 0x28, 0xDB, 0x04, 0xC1, 0x00, 0x00)
#define wave_HASH16 MAKE_HASH16 ('w', 'a', 'v', 'e', 0xF3, 0xAC, 0xD3, 0x11, \
0x8C, 0xD1, 0x00, 0xC0, 0x4F, 0x8E, 0xDB, 0x8A)
#define fmt_HASH16 MAKE_HASH16 ('f', 'm', 't', ' ', 0xF3, 0xAC, 0xD3, 0x11, \
0x8C, 0xD1, 0x00, 0xC0, 0x4F, 0x8E, 0xDB, 0x8A)
#define fact_HASH16 MAKE_HASH16 ('f', 'a', 'c', 't', 0xF3, 0xAC, 0xD3, 0x11, \
0x8C, 0xD1, 0x00, 0xC0, 0x4F, 0x8E, 0xDB, 0x8A)
#define data_HASH16 MAKE_HASH16 ('d', 'a', 't', 'a', 0xF3, 0xAC, 0xD3, 0x11, \
0x8C, 0xD1, 0x00, 0xC0, 0x4F, 0x8E, 0xDB, 0x8A)
MAKE_MARKER16 (riff_MARKER16, 'r', 'i', 'f', 'f', 0x2E, 0x91, 0xCF, 0x11,
0xA5, 0xD6, 0x28, 0xDB, 0x04, 0xC1, 0x00, 0x00) ;
MAKE_MARKER16 (wave_MARKER16, 'w', 'a', 'v', 'e', 0xF3, 0xAC, 0xD3, 0x11,
0x8C, 0xD1, 0x00, 0xC0, 0x4F, 0x8E, 0xDB, 0x8A) ;
MAKE_MARKER16 (fmt_MARKER16, 'f', 'm', 't', ' ', 0xF3, 0xAC, 0xD3, 0x11,
0x8C, 0xD1, 0x00, 0xC0, 0x4F, 0x8E, 0xDB, 0x8A) ;
MAKE_MARKER16 (fact_MARKER16, 'f', 'a', 'c', 't', 0xF3, 0xAC, 0xD3, 0x11,
0x8C, 0xD1, 0x00, 0xC0, 0x4F, 0x8E, 0xDB, 0x8A) ;
MAKE_MARKER16 (data_MARKER16, 'd', 'a', 't', 'a', 0xF3, 0xAC, 0xD3, 0x11,
0x8C, 0xD1, 0x00, 0xC0, 0x4F, 0x8E, 0xDB, 0x8A) ;
enum
{ HAVE_riff = 0x01,
HAVE_wave = 0x02,
HAVE_fmt = 0x04,
HAVE_fact = 0x08,
HAVE_data = 0x20
} ;
/*------------------------------------------------------------------------------
* Private static functions.
*/
static int w64_read_header (SF_PRIVATE *psf, int *blockalign, int *samplesperblock) ;
static int w64_write_header (SF_PRIVATE *psf) ;
static int w64_close (SF_PRIVATE *psf) ;
/*------------------------------------------------------------------------------
** Public function.
*/
int
w64_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 = w64_read_header (psf, &blockalign, &samplesperblock)))
return error ;
};
if ((psf->sf.format & SF_FORMAT_TYPEMASK) != SF_FORMAT_W64)
return SFE_BAD_OPEN_FORMAT ;
subformat = psf->sf.format & SF_FORMAT_SUBMASK ;
if (psf->mode == SFM_WRITE || psf->mode == SFM_RDWR)
{ psf->endian = SF_ENDIAN_LITTLE ; /* All W64 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 = w64_write_header (psf)))
return error ;
psf->write_header = w64_write_header ;
} ;
psf->close = w64_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 ;
} /* w64_open */
/*=========================================================================
** Private functions.
*/
static int
w64_read_header (SF_PRIVATE *psf, int *blockalign, int *samplesperblock)
{ WAV_FMT wav_fmt ;
int dword = 0, marker, format = 0 ;
sf_count_t chunk_size, bytesread ;
int parsestage = 0, error ;
/*-char *cptr ; -*/
/* Set position to start of file to begin reading header. */
psf_binheader_readf (psf, "p", 0) ;
while (1)
{ /* Read the 4 byte marker and jump 12 bytes. */
bytesread = psf_binheader_readf (psf, "h", &marker) ;
chunk_size = 0 ;
switch (marker)
{ case riff_HASH16 :
if (parsestage)
return SFE_W64_NO_RIFF ;
psf_binheader_readf (psf, "e8", &chunk_size) ;
if (psf->filelength < chunk_size)
psf_log_printf (psf, "riff : %d (should be %d)\n", chunk_size, psf->filelength) ;
else
psf_log_printf (psf, "riff : %d\n", chunk_size) ;
parsestage |= HAVE_riff ;
break ;
case wave_HASH16 :
if ((parsestage & HAVE_riff) != HAVE_riff)
return SFE_W64_NO_WAVE ;
psf_log_printf (psf, "wave\n") ;
parsestage |= HAVE_wave ;
break ;
case fmt_HASH16 :
if ((parsestage & (HAVE_riff | HAVE_wave)) != (HAVE_riff | HAVE_wave))
return SFE_W64_NO_FMT ;
bytesread += psf_binheader_readf (psf, "e8", &chunk_size) ;
psf_log_printf (psf, " fmt : %d (0x%X)\n", chunk_size, chunk_size) ;
/* size of 16 byte marker and 8 byte chunk_size value. */
chunk_size -= 24 ;
if ((error = wav_w64_read_fmt_chunk (psf, &wav_fmt, chunk_size)))
return error ;
if (chunk_size % 8)
psf_binheader_readf (psf, "j", 8 - (chunk_size % 8)) ;
format = wav_fmt.format ;
parsestage |= HAVE_fmt ;
break ;
case fact_HASH16:
{ sf_count_t samples ;
psf_binheader_readf (psf, "e88", &chunk_size, &samples) ;
psf_log_printf (psf, " fact : 0x%X\n"
" samples : %d\n",
chunk_size, samples) ;
} ;
break ;
case data_HASH16 :
if ((parsestage & (HAVE_riff | HAVE_wave | HAVE_fmt)) != (HAVE_riff | HAVE_wave | HAVE_fmt))
return SFE_W64_NO_DATA ;
psf_binheader_readf (psf, "e8", &chunk_size) ;
psf->dataoffset = psf_ftell (psf->filedes) ;
psf->datalength = chunk_size - 24 ;
if (chunk_size % 8)
chunk_size += 8 - (chunk_size % 8) ;
psf_log_printf (psf, "data : %d (0x%X)\n", chunk_size, psf->datalength) ;
parsestage |= HAVE_data ;
if (! psf->sf.seekable)
break ;
/* Seek past data and continue reading header. */
psf_fseek (psf->filedes, chunk_size, SEEK_CUR) ;
break ;
default :
if (psf_ftell (psf->filedes) & 0x0F)
{ 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_W64_NO_DATA ;
psf->endian = SF_ENDIAN_LITTLE ; /* All WAV files are little endian. */
psf_fseek (psf->filedes, psf->dataoffset, SEEK_SET) ;
psf->close = w64_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_W64 | u_bitwidth_to_subformat (psf->bytewidth * 8) ;
break ;
case WAVE_FORMAT_MULAW :
psf->sf.format = (SF_FORMAT_W64 | SF_FORMAT_ULAW) ;
break ;
case WAVE_FORMAT_ALAW :
psf->sf.format = (SF_FORMAT_W64 | SF_FORMAT_ALAW) ;
break ;
case WAVE_FORMAT_MS_ADPCM :
psf->sf.format = (SF_FORMAT_W64 | 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_W64 | SF_FORMAT_IMA_ADPCM) ;
*blockalign = wav_fmt.ima.blockalign ;
*samplesperblock = wav_fmt.ima.samplesperblock ;
break ;
case WAVE_FORMAT_GSM610 :
psf->sf.format = (SF_FORMAT_W64 | SF_FORMAT_GSM610) ;
break ;
case WAVE_FORMAT_IEEE_FLOAT :
psf->sf.format = SF_FORMAT_W64 ;
psf->sf.format |= (psf->bytewidth == 8) ? SF_FORMAT_DOUBLE : SF_FORMAT_FLOAT ;
break ;
default : return SFE_UNIMPLEMENTED ;
} ;
return 0 ;
} /* w64_read_header */
static int
w64_write_header (SF_PRIVATE *psf)
{ sf_count_t fmt_size ;
int 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, "eh8hh", riff_MARKER16, psf->filelength - 8, wave_MARKER16, fmt_MARKER16) ;
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 = 24 + 2 + 2 + 4 + 4 + 2 + 2 ;
/* fmt : format, channels, samplerate */
psf_binheader_writef (psf, "e8224", 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 :
fmt_size = 24 + 2 + 2 + 4 + 4 + 2 + 2 ;
/* fmt : format, channels, samplerate */
psf_binheader_writef (psf, "e8224", 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 = 24 + 2 + 2 + 4 + 4 + 2 + 2 ;
/* fmt : format, channels, samplerate */
psf_binheader_writef (psf, "e8224", 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 = 24 + 2 + 2 + 4 + 4 + 2 + 2 ;
/* fmt : format, channels, samplerate */
psf_binheader_writef (psf, "e8224", 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 = 24 + 2 + 2 + 4 + 4 + 2 + 2 + 2 + 2 ;
/* fmt : size, WAV format type, channels. */
psf_binheader_writef (psf, "e822", fmt_size, WAVE_FORMAT_IMA_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, "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 = 24 + 2 + 2 + 4 + 4 + 2 + 2 + 2 + extrabytes ;
/* fmt : size, W64 format type, channels. */
psf_binheader_writef (psf, "e822", 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 bytespersec ;
bytespersec = (psf->sf.samplerate * WAV_W64_GSM610_BLOCKSIZE) / WAV_W64_GSM610_SAMPLES ;
/* fmt chunk. */
fmt_size = 24 + 2 + 2 + 4 + 4 + 2 + 2 + 2 + 2 ;
/* fmt : size, WAV format type, channels. */
psf_binheader_writef (psf, "e822", 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", WAV_W64_GSM610_BLOCKSIZE, 0, 2, WAV_W64_GSM610_SAMPLES) ;
} ;
add_fact_chunk = SF_TRUE ;
break ;
default : return SFE_UNIMPLEMENTED ;
} ;
/* Pad to 8 bytes with zeros. */
if (fmt_size % 8)
psf_binheader_writef (psf, "z", 8 - (fmt_size % 8)) ;
if (add_fact_chunk)
psf_binheader_writef (psf, "eh88", fact_MARKER16, 16 + 8 + 8, psf->sf.samples) ;
psf_binheader_writef (psf, "eh8", data_MARKER16, psf->datalength + 24) ;
psf_fwrite (psf->header, psf->headindex, 1, psf->filedes) ;
psf->dataoffset = psf->headindex ;
return 0 ;
} /* w64_write_header */
static int
w64_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) ;
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) ;
w64_write_header (psf) ;
} ;
return 0 ;
} /* w64_close */