--- /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 MATL_MARKER (MAKE_MARKER ('M', 'A', 'T', 'L'))
+
+#define IM_MARKER (('I' << 8) + 'M')
+#define MI_MARKER (('M' << 8) + 'I')
+
+/*------------------------------------------------------------------------------
+** Enums and typedefs.
+*/
+
+enum
+{ MAT5_TYPE_SCHAR = 0x1,
+ MAT5_TYPE_UCHAR = 0x2,
+ MAT5_TYPE_INT16 = 0x3,
+ MAT5_TYPE_UINT16 = 0x4,
+ MAT5_TYPE_INT32 = 0x5,
+ MAT5_TYPE_UINT32 = 0x6,
+ MAT5_TYPE_FLOAT = 0x7,
+ MAT5_TYPE_DOUBLE = 0x9,
+ MAT5_TYPE_ARRAY = 0xE,
+
+ MAT5_TYPE_COMP_USHORT = 0x00020004,
+ MAT5_TYPE_COMP_UINT = 0x00040006
+} ;
+
+typedef struct
+{ sf_count_t size ;
+ int rows, cols ;
+ char name [32] ;
+} MAT5_MATRIX ;
+
+/*------------------------------------------------------------------------------
+** Private static functions.
+*/
+
+static int mat5_close (SF_PRIVATE *psf) ;
+
+static int mat5_write_header (SF_PRIVATE *psf, int calc_length) ;
+static int mat5_read_header (SF_PRIVATE *psf) ;
+
+/*------------------------------------------------------------------------------
+** Public function.
+*/
+
+int
+mat5_open (SF_PRIVATE *psf)
+{ int subformat, error = 0 ;
+
+ if (psf->file.mode == SFM_READ || (psf->file.mode == SFM_RDWR && psf->filelength > 0))
+ { if ((error = mat5_read_header (psf)))
+ return error ;
+ } ;
+
+ if ((SF_CONTAINER (psf->sf.format)) != SF_FORMAT_MAT5)
+ 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 = mat5_write_header (psf, SF_FALSE)))
+ return error ;
+
+ psf->write_header = mat5_write_header ;
+ } ;
+
+ psf->container_close = mat5_close ;
+
+ psf->blockwidth = psf->bytewidth * psf->sf.channels ;
+
+ switch (subformat)
+ { case SF_FORMAT_PCM_U8 :
+ 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 ;
+ } ;
+
+ return error ;
+} /* mat5_open */
+
+/*------------------------------------------------------------------------------
+*/
+
+static int
+mat5_close (SF_PRIVATE *psf)
+{
+ if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR)
+ mat5_write_header (psf, SF_TRUE) ;
+
+ return 0 ;
+} /* mat5_close */
+
+/*------------------------------------------------------------------------------
+*/
+
+static int
+mat5_write_header (SF_PRIVATE *psf, int calc_length)
+{ static const char *filename = "MATLAB 5.0 MAT-file, written by " PACKAGE "-" VERSION ", " ;
+ static const char *sr_name = "samplerate\0\0\0\0\0\0\0\0\0\0\0" ;
+ static const char *wd_name = "wavedata\0" ;
+ sf_count_t current, datasize ;
+ int encoding ;
+
+ current = psf_ftell (psf) ;
+
+ if (calc_length)
+ { psf_fseek (psf, 0, SEEK_END) ;
+ psf->filelength = psf_ftell (psf) ;
+ psf_fseek (psf, 0, SEEK_SET) ;
+
+ 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) ;
+ } ;
+
+ switch (SF_CODEC (psf->sf.format))
+ { case SF_FORMAT_PCM_U8 :
+ encoding = MAT5_TYPE_UCHAR ;
+ break ;
+
+ case SF_FORMAT_PCM_16 :
+ encoding = MAT5_TYPE_INT16 ;
+ break ;
+
+ case SF_FORMAT_PCM_32 :
+ encoding = MAT5_TYPE_INT32 ;
+ break ;
+
+ case SF_FORMAT_FLOAT :
+ encoding = MAT5_TYPE_FLOAT ;
+ break ;
+
+ case SF_FORMAT_DOUBLE :
+ encoding = MAT5_TYPE_DOUBLE ;
+ break ;
+
+ default :
+ 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) ;
+
+ psf_get_date_str (psf->u.cbuf, sizeof (psf->u.scbuf)) ;
+ psf_binheader_writef (psf, "bb", filename, strlen (filename), psf->u.cbuf, strlen (psf->u.cbuf) + 1) ;
+
+ memset (psf->u.scbuf, ' ', 124 - psf->headindex) ;
+ psf_binheader_writef (psf, "b", psf->u.scbuf, make_size_t (124 - psf->headindex)) ;
+
+ psf->rwf_endian = psf->endian ;
+
+ if (psf->rwf_endian == SF_ENDIAN_BIG)
+ psf_binheader_writef (psf, "2b", 0x0100, "MI", make_size_t (2)) ;
+ else
+ psf_binheader_writef (psf, "2b", 0x0100, "IM", make_size_t (2)) ;
+
+ psf_binheader_writef (psf, "444444", MAT5_TYPE_ARRAY, 64, MAT5_TYPE_UINT32, 8, 6, 0) ;
+ psf_binheader_writef (psf, "4444", MAT5_TYPE_INT32, 8, 1, 1) ;
+ psf_binheader_writef (psf, "44b", MAT5_TYPE_SCHAR, strlen (sr_name), sr_name, make_size_t (16)) ;
+
+ if (psf->sf.samplerate > 0xFFFF)
+ psf_binheader_writef (psf, "44", MAT5_TYPE_COMP_UINT, psf->sf.samplerate) ;
+ else
+ { unsigned short samplerate = psf->sf.samplerate ;
+
+ psf_binheader_writef (psf, "422", MAT5_TYPE_COMP_USHORT, samplerate, 0) ;
+ } ;
+
+ datasize = psf->sf.frames * psf->sf.channels * psf->bytewidth ;
+
+ psf_binheader_writef (psf, "t484444", MAT5_TYPE_ARRAY, datasize + 64, MAT5_TYPE_UINT32, 8, 6, 0) ;
+ psf_binheader_writef (psf, "t4448", MAT5_TYPE_INT32, 8, psf->sf.channels, psf->sf.frames) ;
+ psf_binheader_writef (psf, "44b", MAT5_TYPE_SCHAR, strlen (wd_name), wd_name, strlen (wd_name)) ;
+
+ datasize = psf->sf.frames * psf->sf.channels * psf->bytewidth ;
+ if (datasize > 0x7FFFFFFF)
+ datasize = 0x7FFFFFFF ;
+
+ psf_binheader_writef (psf, "t48", encoding, datasize) ;
+
+ /* 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 ;
+} /* mat5_write_header */
+
+static int
+mat5_read_header (SF_PRIVATE *psf)
+{ char name [32] ;
+ short version, endian ;
+ int type, flags1, flags2, rows, cols ;
+ unsigned size ;
+
+ psf_binheader_readf (psf, "pb", 0, psf->u.cbuf, 124) ;
+
+ psf->u.scbuf [125] = 0 ;
+
+ if (strlen (psf->u.cbuf) >= 124)
+ return SFE_UNIMPLEMENTED ;
+
+ if (strstr (psf->u.cbuf, "MATLAB 5.0 MAT-file") == psf->u.cbuf)
+ psf_log_printf (psf, "%s\n", psf->u.scbuf) ;
+
+
+ psf_binheader_readf (psf, "E22", &version, &endian) ;
+
+ if (endian == MI_MARKER)
+ { psf->endian = psf->rwf_endian = SF_ENDIAN_BIG ;
+ if (CPU_IS_LITTLE_ENDIAN) version = ENDSWAP_SHORT (version) ;
+ }
+ else if (endian == IM_MARKER)
+ { psf->endian = psf->rwf_endian = SF_ENDIAN_LITTLE ;
+ if (CPU_IS_BIG_ENDIAN) version = ENDSWAP_SHORT (version) ;
+ }
+ else
+ return SFE_MAT5_BAD_ENDIAN ;
+
+ if ((CPU_IS_LITTLE_ENDIAN && endian == IM_MARKER) ||
+ (CPU_IS_BIG_ENDIAN && endian == MI_MARKER))
+ version = ENDSWAP_SHORT (version) ;
+
+ psf_log_printf (psf, "Version : 0x%04X\n", version) ;
+ psf_log_printf (psf, "Endian : 0x%04X => %s\n", endian,
+ (psf->endian == SF_ENDIAN_LITTLE) ? "Little" : "Big") ;
+
+ /*========================================================*/
+ psf_binheader_readf (psf, "44", &type, &size) ;
+ psf_log_printf (psf, "Block\n Type : %X Size : %d\n", type, size) ;
+
+ if (type != MAT5_TYPE_ARRAY)
+ return SFE_MAT5_NO_BLOCK ;
+
+ psf_binheader_readf (psf, "44", &type, &size) ;
+ psf_log_printf (psf, " Type : %X Size : %d\n", type, size) ;
+
+ if (type != MAT5_TYPE_UINT32)
+ return SFE_MAT5_NO_BLOCK ;
+
+ psf_binheader_readf (psf, "44", &flags1, &flags2) ;
+ psf_log_printf (psf, " Flg1 : %X Flg2 : %d\n", flags1, flags2) ;
+
+ psf_binheader_readf (psf, "44", &type, &size) ;
+ psf_log_printf (psf, " Type : %X Size : %d\n", type, size) ;
+
+ if (type != MAT5_TYPE_INT32)
+ return SFE_MAT5_NO_BLOCK ;
+
+ psf_binheader_readf (psf, "44", &rows, &cols) ;
+ psf_log_printf (psf, " Rows : %X Cols : %d\n", rows, cols) ;
+
+ if (rows != 1 || cols != 1)
+ return SFE_MAT5_SAMPLE_RATE ;
+
+ psf_binheader_readf (psf, "4", &type) ;
+
+ if (type == MAT5_TYPE_SCHAR)
+ { psf_binheader_readf (psf, "4", &size) ;
+ psf_log_printf (psf, " Type : %X Size : %d\n", type, size) ;
+ if (size > SIGNED_SIZEOF (name) - 1)
+ { psf_log_printf (psf, "Error : Bad name length.\n") ;
+ return SFE_MAT5_NO_BLOCK ;
+ } ;
+
+ psf_binheader_readf (psf, "bj", name, size, (8 - (size % 8)) % 8) ;
+ name [size] = 0 ;
+ }
+ else if ((type & 0xFFFF) == MAT5_TYPE_SCHAR)
+ { size = type >> 16 ;
+ if (size > 4)
+ { psf_log_printf (psf, "Error : Bad name length.\n") ;
+ return SFE_MAT5_NO_BLOCK ;
+ } ;
+
+ psf_log_printf (psf, " Type : %X\n", type) ;
+ psf_binheader_readf (psf, "4", &name) ;
+ name [size] = 0 ;
+ }
+ else
+ return SFE_MAT5_NO_BLOCK ;
+
+ psf_log_printf (psf, " Name : %s\n", name) ;
+
+ /*-----------------------------------------*/
+
+ psf_binheader_readf (psf, "44", &type, &size) ;
+
+ switch (type)
+ { case MAT5_TYPE_DOUBLE :
+ { double samplerate ;
+
+ psf_binheader_readf (psf, "d", &samplerate) ;
+ snprintf (name, sizeof (name), "%f\n", samplerate) ;
+ psf_log_printf (psf, " Val : %s\n", name) ;
+
+ psf->sf.samplerate = lrint (samplerate) ;
+ } ;
+ break ;
+
+ case MAT5_TYPE_COMP_USHORT :
+ { unsigned short samplerate ;
+
+ psf_binheader_readf (psf, "j2j", -4, &samplerate, 2) ;
+ psf_log_printf (psf, " Val : %u\n", samplerate) ;
+ psf->sf.samplerate = samplerate ;
+ }
+ break ;
+
+ case MAT5_TYPE_COMP_UINT :
+ psf_log_printf (psf, " Val : %u\n", size) ;
+ psf->sf.samplerate = size ;
+ break ;
+
+ default :
+ psf_log_printf (psf, " Type : %X Size : %d ***\n", type, size) ;
+ return SFE_MAT5_SAMPLE_RATE ;
+ } ;
+
+ /*-----------------------------------------*/
+
+
+ psf_binheader_readf (psf, "44", &type, &size) ;
+ psf_log_printf (psf, " Type : %X Size : %d\n", type, size) ;
+
+ if (type != MAT5_TYPE_ARRAY)
+ return SFE_MAT5_NO_BLOCK ;
+
+ psf_binheader_readf (psf, "44", &type, &size) ;
+ psf_log_printf (psf, " Type : %X Size : %d\n", type, size) ;
+
+ if (type != MAT5_TYPE_UINT32)
+ return SFE_MAT5_NO_BLOCK ;
+
+ psf_binheader_readf (psf, "44", &flags1, &flags2) ;
+ psf_log_printf (psf, " Flg1 : %X Flg2 : %d\n", flags1, flags2) ;
+
+ psf_binheader_readf (psf, "44", &type, &size) ;
+ psf_log_printf (psf, " Type : %X Size : %d\n", type, size) ;
+
+ if (type != MAT5_TYPE_INT32)
+ return SFE_MAT5_NO_BLOCK ;
+
+ psf_binheader_readf (psf, "44", &rows, &cols) ;
+ psf_log_printf (psf, " Rows : %X Cols : %d\n", rows, cols) ;
+
+ psf_binheader_readf (psf, "4", &type) ;
+
+ if (type == MAT5_TYPE_SCHAR)
+ { psf_binheader_readf (psf, "4", &size) ;
+ psf_log_printf (psf, " Type : %X Size : %d\n", type, size) ;
+ if (size > SIGNED_SIZEOF (name) - 1)
+ { psf_log_printf (psf, "Error : Bad name length.\n") ;
+ return SFE_MAT5_NO_BLOCK ;
+ } ;
+
+ psf_binheader_readf (psf, "bj", name, size, (8 - (size % 8)) % 8) ;
+ name [size] = 0 ;
+ }
+ else if ((type & 0xFFFF) == MAT5_TYPE_SCHAR)
+ { size = type >> 16 ;
+ if (size > 4)
+ { psf_log_printf (psf, "Error : Bad name length.\n") ;
+ return SFE_MAT5_NO_BLOCK ;
+ } ;
+
+ psf_log_printf (psf, " Type : %X\n", type) ;
+ psf_binheader_readf (psf, "4", &name) ;
+ name [size] = 0 ;
+ }
+ else
+ return SFE_MAT5_NO_BLOCK ;
+
+ psf_log_printf (psf, " Name : %s\n", name) ;
+
+ psf_binheader_readf (psf, "44", &type, &size) ;
+ psf_log_printf (psf, " Type : %X Size : %d\n", type, size) ;
+
+ /*++++++++++++++++++++++++++++++++++++++++++++++++++*/
+
+ 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_MAT5 ;
+
+ switch (type)
+ { case MAT5_TYPE_DOUBLE :
+ psf_log_printf (psf, "Data type : double\n") ;
+ psf->sf.format |= SF_FORMAT_DOUBLE ;
+ psf->bytewidth = 8 ;
+ break ;
+
+ case MAT5_TYPE_FLOAT :
+ psf_log_printf (psf, "Data type : float\n") ;
+ psf->sf.format |= SF_FORMAT_FLOAT ;
+ psf->bytewidth = 4 ;
+ break ;
+
+ case MAT5_TYPE_INT32 :
+ psf_log_printf (psf, "Data type : 32 bit PCM\n") ;
+ psf->sf.format |= SF_FORMAT_PCM_32 ;
+ psf->bytewidth = 4 ;
+ break ;
+
+ case MAT5_TYPE_INT16 :
+ psf_log_printf (psf, "Data type : 16 bit PCM\n") ;
+ psf->sf.format |= SF_FORMAT_PCM_16 ;
+ psf->bytewidth = 2 ;
+ break ;
+
+ case MAT5_TYPE_UCHAR :
+ psf_log_printf (psf, "Data type : unsigned 8 bit PCM\n") ;
+ psf->sf.format |= SF_FORMAT_PCM_U8 ;
+ psf->bytewidth = 1 ;
+ break ;
+
+ default :
+ psf_log_printf (psf, "*** Error : Bad marker %08X\n", type) ;
+ return SFE_UNIMPLEMENTED ;
+ } ;
+
+ psf->dataoffset = psf_ftell (psf) ;
+ psf->datalength = psf->filelength - psf->dataoffset ;
+
+ return 0 ;
+} /* mat5_read_header */
+
projects / Faustine.git / blobdiff