+++ /dev/null
-/*
-** Copyright (C) 2002-2011 Erik de Castro Lopo <erikd@mega-nerd.com>
-**
-** 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 "sfconfig.h"
-
-#include <stdio.h>
-#include <fcntl.h>
-#include <string.h>
-#include <ctype.h>
-#include <math.h>
-
-#include "sndfile.h"
-#include "sfendian.h"
-#include "common.h"
-
-/*------------------------------------------------------------------------------
-** Information on how to decode and encode this file was obtained in a PDF
-** file which I found on http://www.wotsit.org/.
-** Also did a lot of testing with GNU Octave but do not have access to
-** Matlab (tm) and so could not test it there.
-*/
-
-/*------------------------------------------------------------------------------
-** Macros to handle big/little endian issues.
-*/
-
-#define MAT4_BE_DOUBLE (MAKE_MARKER (0, 0, 0x03, 0xE8))
-#define MAT4_LE_DOUBLE (MAKE_MARKER (0, 0, 0, 0))
-
-#define MAT4_BE_FLOAT (MAKE_MARKER (0, 0, 0x03, 0xF2))
-#define MAT4_LE_FLOAT (MAKE_MARKER (0x0A, 0, 0, 0))
-
-#define MAT4_BE_PCM_32 (MAKE_MARKER (0, 0, 0x03, 0xFC))
-#define MAT4_LE_PCM_32 (MAKE_MARKER (0x14, 0, 0, 0))
-
-#define MAT4_BE_PCM_16 (MAKE_MARKER (0, 0, 0x04, 0x06))
-#define MAT4_LE_PCM_16 (MAKE_MARKER (0x1E, 0, 0, 0))
-
-/* Can't see any reason to ever implement this. */
-#define MAT4_BE_PCM_U8 (MAKE_MARKER (0, 0, 0x04, 0x1A))
-#define MAT4_LE_PCM_U8 (MAKE_MARKER (0x32, 0, 0, 0))
-
-/*------------------------------------------------------------------------------
-** Private static functions.
-*/
-
-static int mat4_close (SF_PRIVATE *psf) ;
-
-static int mat4_format_to_encoding (int format, int endian) ;
-
-static int mat4_write_header (SF_PRIVATE *psf, int calc_length) ;
-static int mat4_read_header (SF_PRIVATE *psf) ;
-
-static const char * mat4_marker_to_str (int marker) ;
-
-/*------------------------------------------------------------------------------
-** Public function.
-*/
-
-int
-mat4_open (SF_PRIVATE *psf)
-{ int subformat, error = 0 ;
-
- if (psf->file.mode == SFM_READ || (psf->file.mode == SFM_RDWR && psf->filelength > 0))
- { if ((error = mat4_read_header (psf)))
- return error ;
- } ;
-
- if ((SF_CONTAINER (psf->sf.format)) != SF_FORMAT_MAT4)
- return SFE_BAD_OPEN_FORMAT ;
-
- subformat = SF_CODEC (psf->sf.format) ;
-
- if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR)
- { if (psf->is_pipe)
- return SFE_NO_PIPE_WRITE ;
-
- psf->endian = SF_ENDIAN (psf->sf.format) ;
- if (CPU_IS_LITTLE_ENDIAN && (psf->endian == SF_ENDIAN_CPU || psf->endian == 0))
- psf->endian = SF_ENDIAN_LITTLE ;
- else if (CPU_IS_BIG_ENDIAN && (psf->endian == SF_ENDIAN_CPU || psf->endian == 0))
- psf->endian = SF_ENDIAN_BIG ;
-
- if ((error = mat4_write_header (psf, SF_FALSE)))
- return error ;
-
- psf->write_header = mat4_write_header ;
- } ;
-
- psf->container_close = mat4_close ;
-
- psf->blockwidth = psf->bytewidth * psf->sf.channels ;
-
- switch (subformat)
- { case SF_FORMAT_PCM_16 :
- 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 ;
-
- default : break ;
- } ;
-
- if (error)
- return error ;
-
- return error ;
-} /* mat4_open */
-
-/*------------------------------------------------------------------------------
-*/
-
-static int
-mat4_close (SF_PRIVATE *psf)
-{
- if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR)
- mat4_write_header (psf, SF_TRUE) ;
-
- return 0 ;
-} /* mat4_close */
-
-/*------------------------------------------------------------------------------
-*/
-
-static int
-mat4_write_header (SF_PRIVATE *psf, int calc_length)
-{ sf_count_t current ;
- int encoding ;
- double samplerate ;
-
- current = psf_ftell (psf) ;
-
- if (calc_length)
- { psf->filelength = psf_get_filelen (psf) ;
-
- psf->datalength = psf->filelength - psf->dataoffset ;
- if (psf->dataend)
- psf->datalength -= psf->filelength - psf->dataend ;
-
- psf->sf.frames = psf->datalength / (psf->bytewidth * psf->sf.channels) ;
- } ;
-
- encoding = mat4_format_to_encoding (SF_CODEC (psf->sf.format), psf->endian) ;
-
- if (encoding == -1)
- return SFE_BAD_OPEN_FORMAT ;
-
- /* Reset the current header length to zero. */
- psf->header [0] = 0 ;
- psf->headindex = 0 ;
- psf_fseek (psf, 0, SEEK_SET) ;
-
- /* Need sample rate as a double for writing to the header. */
- samplerate = psf->sf.samplerate ;
-
- if (psf->endian == SF_ENDIAN_BIG)
- { psf_binheader_writef (psf, "Em444", MAT4_BE_DOUBLE, 1, 1, 0) ;
- psf_binheader_writef (psf, "E4bd", 11, "samplerate", make_size_t (11), samplerate) ;
- psf_binheader_writef (psf, "tEm484", encoding, psf->sf.channels, psf->sf.frames, 0) ;
- psf_binheader_writef (psf, "E4b", 9, "wavedata", make_size_t (9)) ;
- }
- else if (psf->endian == SF_ENDIAN_LITTLE)
- { psf_binheader_writef (psf, "em444", MAT4_LE_DOUBLE, 1, 1, 0) ;
- psf_binheader_writef (psf, "e4bd", 11, "samplerate", make_size_t (11), samplerate) ;
- psf_binheader_writef (psf, "tem484", encoding, psf->sf.channels, psf->sf.frames, 0) ;
- psf_binheader_writef (psf, "e4b", 9, "wavedata", make_size_t (9)) ;
- }
- else
- return SFE_BAD_OPEN_FORMAT ;
-
- /* Header construction complete so write it out. */
- psf_fwrite (psf->header, psf->headindex, 1, psf) ;
-
- if (psf->error)
- return psf->error ;
-
- psf->dataoffset = psf->headindex ;
-
- if (current > 0)
- psf_fseek (psf, current, SEEK_SET) ;
-
- return psf->error ;
-} /* mat4_write_header */
-
-static int
-mat4_read_header (SF_PRIVATE *psf)
-{ int marker, rows, cols, imag ;
- unsigned namesize ;
- double value ;
- const char *marker_str ;
- char name [64] ;
-
- psf_binheader_readf (psf, "pm", 0, &marker) ;
-
- /* MAT4 file must start with a double for the samplerate. */
- if (marker == MAT4_BE_DOUBLE)
- { psf->endian = psf->rwf_endian = SF_ENDIAN_BIG ;
- marker_str = "big endian double" ;
- }
- else if (marker == MAT4_LE_DOUBLE)
- { psf->endian = psf->rwf_endian = SF_ENDIAN_LITTLE ;
- marker_str = "little endian double" ;
- }
- else
- return SFE_UNIMPLEMENTED ;
-
- psf_log_printf (psf, "GNU Octave 2.0 / MATLAB v4.2 format\nMarker : %s\n", marker_str) ;
-
- psf_binheader_readf (psf, "444", &rows, &cols, &imag) ;
-
- psf_log_printf (psf, " Rows : %d\n Cols : %d\n Imag : %s\n", rows, cols, imag ? "True" : "False") ;
-
- psf_binheader_readf (psf, "4", &namesize) ;
-
- if (namesize >= SIGNED_SIZEOF (name))
- return SFE_MAT4_BAD_NAME ;
-
- psf_binheader_readf (psf, "b", name, namesize) ;
- name [namesize] = 0 ;
-
- psf_log_printf (psf, " Name : %s\n", name) ;
-
- psf_binheader_readf (psf, "d", &value) ;
-
- snprintf (psf->u.cbuf, sizeof (psf->u.cbuf), " Value : %f\n", value) ;
- psf_log_printf (psf, psf->u.cbuf) ;
-
- if ((rows != 1) || (cols != 1))
- return SFE_MAT4_NO_SAMPLERATE ;
-
- psf->sf.samplerate = lrint (value) ;
-
- /* Now write out the audio data. */
-
- psf_binheader_readf (psf, "m", &marker) ;
-
- psf_log_printf (psf, "Marker : %s\n", mat4_marker_to_str (marker)) ;
-
- psf_binheader_readf (psf, "444", &rows, &cols, &imag) ;
-
- psf_log_printf (psf, " Rows : %d\n Cols : %d\n Imag : %s\n", rows, cols, imag ? "True" : "False") ;
-
- psf_binheader_readf (psf, "4", &namesize) ;
-
- if (namesize >= SIGNED_SIZEOF (name))
- return SFE_MAT4_BAD_NAME ;
-
- psf_binheader_readf (psf, "b", name, namesize) ;
- name [namesize] = 0 ;
-
- psf_log_printf (psf, " Name : %s\n", name) ;
-
- psf->dataoffset = psf_ftell (psf) ;
-
- if (rows == 0 && cols == 0)
- { psf_log_printf (psf, "*** Error : zero channel count.\n") ;
- return SFE_CHANNEL_COUNT_ZERO ;
- } ;
-
- psf->sf.channels = rows ;
- psf->sf.frames = cols ;
-
- psf->sf.format = psf->endian | SF_FORMAT_MAT4 ;
- switch (marker)
- { case MAT4_BE_DOUBLE :
- case MAT4_LE_DOUBLE :
- psf->sf.format |= SF_FORMAT_DOUBLE ;
- psf->bytewidth = 8 ;
- break ;
-
- case MAT4_BE_FLOAT :
- case MAT4_LE_FLOAT :
- psf->sf.format |= SF_FORMAT_FLOAT ;
- psf->bytewidth = 4 ;
- break ;
-
- case MAT4_BE_PCM_32 :
- case MAT4_LE_PCM_32 :
- psf->sf.format |= SF_FORMAT_PCM_32 ;
- psf->bytewidth = 4 ;
- break ;
-
- case MAT4_BE_PCM_16 :
- case MAT4_LE_PCM_16 :
- psf->sf.format |= SF_FORMAT_PCM_16 ;
- psf->bytewidth = 2 ;
- break ;
-
- default :
- psf_log_printf (psf, "*** Error : Bad marker %08X\n", marker) ;
- return SFE_UNIMPLEMENTED ;
- } ;
-
- if ((psf->filelength - psf->dataoffset) < psf->sf.channels * psf->sf.frames * psf->bytewidth)
- { psf_log_printf (psf, "*** File seems to be truncated. %D <--> %D\n",
- psf->filelength - psf->dataoffset, psf->sf.channels * psf->sf.frames * psf->bytewidth) ;
- }
- else if ((psf->filelength - psf->dataoffset) > psf->sf.channels * psf->sf.frames * psf->bytewidth)
- psf->dataend = psf->dataoffset + rows * cols * psf->bytewidth ;
-
- psf->datalength = psf->filelength - psf->dataoffset - psf->dataend ;
-
- psf->sf.sections = 1 ;
-
- return 0 ;
-} /* mat4_read_header */
-
-static int
-mat4_format_to_encoding (int format, int endian)
-{
- switch (format | endian)
- { case (SF_FORMAT_PCM_16 | SF_ENDIAN_BIG) :
- return MAT4_BE_PCM_16 ;
-
- case (SF_FORMAT_PCM_16 | SF_ENDIAN_LITTLE) :
- return MAT4_LE_PCM_16 ;
-
- case (SF_FORMAT_PCM_32 | SF_ENDIAN_BIG) :
- return MAT4_BE_PCM_32 ;
-
- case (SF_FORMAT_PCM_32 | SF_ENDIAN_LITTLE) :
- return MAT4_LE_PCM_32 ;
-
- case (SF_FORMAT_FLOAT | SF_ENDIAN_BIG) :
- return MAT4_BE_FLOAT ;
-
- case (SF_FORMAT_FLOAT | SF_ENDIAN_LITTLE) :
- return MAT4_LE_FLOAT ;
-
- case (SF_FORMAT_DOUBLE | SF_ENDIAN_BIG) :
- return MAT4_BE_DOUBLE ;
-
- case (SF_FORMAT_DOUBLE | SF_ENDIAN_LITTLE) :
- return MAT4_LE_DOUBLE ;
-
- default : break ;
- } ;
-
- return -1 ;
-} /* mat4_format_to_encoding */
-
-static const char *
-mat4_marker_to_str (int marker)
-{ static char str [32] ;
-
- switch (marker)
- {
- case MAT4_BE_PCM_16 : return "big endian 16 bit PCM" ;
- case MAT4_LE_PCM_16 : return "little endian 16 bit PCM" ;
-
- case MAT4_BE_PCM_32 : return "big endian 32 bit PCM" ;
- case MAT4_LE_PCM_32 : return "little endian 32 bit PCM" ;
-
-
- case MAT4_BE_FLOAT : return "big endian float" ;
- case MAT4_LE_FLOAT : return "big endian float" ;
-
- case MAT4_BE_DOUBLE : return "big endian double" ;
- case MAT4_LE_DOUBLE : return "little endian double" ;
- } ;
-
- /* This is a little unsafe but is really only for debugging. */
- str [sizeof (str) - 1] = 0 ;
- snprintf (str, sizeof (str) - 1, "%08X", marker) ;
- return str ;
-} /* mat4_marker_to_str */
-
projects / Faustine.git / blobdiff