X-Git-Url: https://scm.cri.ensmp.fr/git/Faustine.git/blobdiff_plain/1059e1cc0c2ecfa237406949aa26155b6a5b9154..66f23d4fabf89ad09adbd4dfc15ac6b5b2b7da83:/interpreter/lib/src/libsndfile-1.0.25/src/mat4.c diff --git a/interpreter/lib/src/libsndfile-1.0.25/src/mat4.c b/interpreter/lib/src/libsndfile-1.0.25/src/mat4.c new file mode 100644 index 0000000..3471e34 --- /dev/null +++ b/interpreter/lib/src/libsndfile-1.0.25/src/mat4.c @@ -0,0 +1,389 @@ +/* +** Copyright (C) 2002-2011 Erik de Castro Lopo +** +** 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 +#include +#include +#include +#include + +#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 */ +