X-Git-Url: https://scm.cri.ensmp.fr/git/Faustine.git/blobdiff_plain/e775f23a10c4ba37fc1a762299f52cd0d71593b7..f1f94803668061f90a5ce88bf06ee72bba8e41a5:/interpretor/lib/src/libsndfile-1.0.25/src/svx.c diff --git a/interpretor/lib/src/libsndfile-1.0.25/src/svx.c b/interpretor/lib/src/libsndfile-1.0.25/src/svx.c new file mode 100644 index 0000000..b611f76 --- /dev/null +++ b/interpretor/lib/src/libsndfile-1.0.25/src/svx.c @@ -0,0 +1,416 @@ +/* +** Copyright (C) 1999-2011 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 "sndfile.h" +#include "sfendian.h" +#include "common.h" + + +/*------------------------------------------------------------------------------ + * Macros to handle big/little endian issues. +*/ + +#define FORM_MARKER (MAKE_MARKER ('F', 'O', 'R', 'M')) +#define SVX8_MARKER (MAKE_MARKER ('8', 'S', 'V', 'X')) +#define SV16_MARKER (MAKE_MARKER ('1', '6', 'S', 'V')) +#define VHDR_MARKER (MAKE_MARKER ('V', 'H', 'D', 'R')) +#define BODY_MARKER (MAKE_MARKER ('B', 'O', 'D', 'Y')) + +#define ATAK_MARKER (MAKE_MARKER ('A', 'T', 'A', 'K')) +#define RLSE_MARKER (MAKE_MARKER ('R', 'L', 'S', 'E')) + +#define c_MARKER (MAKE_MARKER ('(', 'c', ')', ' ')) +#define NAME_MARKER (MAKE_MARKER ('N', 'A', 'M', 'E')) +#define AUTH_MARKER (MAKE_MARKER ('A', 'U', 'T', 'H')) +#define ANNO_MARKER (MAKE_MARKER ('A', 'N', 'N', 'O')) +#define CHAN_MARKER (MAKE_MARKER ('C', 'H', 'A', 'N')) + +/*------------------------------------------------------------------------------ + * Typedefs for file chunks. +*/ + +typedef struct +{ unsigned int oneShotHiSamples, repeatHiSamples, samplesPerHiCycle ; + unsigned short samplesPerSec ; + unsigned char octave, compression ; + unsigned int volume ; +} VHDR_CHUNK ; + +enum { + HAVE_FORM = 0x01, + + HAVE_SVX = 0x02, + HAVE_VHDR = 0x04, + HAVE_BODY = 0x08 +} ; + +/*------------------------------------------------------------------------------ + * Private static functions. +*/ + +static int svx_close (SF_PRIVATE *psf) ; +static int svx_write_header (SF_PRIVATE *psf, int calc_length) ; +static int svx_read_header (SF_PRIVATE *psf) ; + +/*------------------------------------------------------------------------------ +** Public function. +*/ + +int +svx_open (SF_PRIVATE *psf) +{ int error ; + + if (psf->file.mode == SFM_READ || (psf->file.mode == SFM_RDWR && psf->filelength > 0)) + { if ((error = svx_read_header (psf))) + return error ; + + psf->endian = SF_ENDIAN_BIG ; /* All SVX files are big endian. */ + + psf->blockwidth = psf->sf.channels * psf->bytewidth ; + if (psf->blockwidth) + psf->sf.frames = psf->datalength / psf->blockwidth ; + + psf_fseek (psf, psf->dataoffset, SEEK_SET) ; + } ; + + if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR) + { if (psf->is_pipe) + return SFE_NO_PIPE_WRITE ; + + if ((SF_CONTAINER (psf->sf.format)) != SF_FORMAT_SVX) + return SFE_BAD_OPEN_FORMAT ; + + psf->endian = SF_ENDIAN (psf->sf.format) ; + + if (psf->endian == SF_ENDIAN_LITTLE || (CPU_IS_LITTLE_ENDIAN && psf->endian == SF_ENDIAN_CPU)) + return SFE_BAD_ENDIAN ; + + psf->endian = SF_ENDIAN_BIG ; /* All SVX files are big endian. */ + + error = svx_write_header (psf, SF_FALSE) ; + if (error) + return error ; + + psf->write_header = svx_write_header ; + } ; + + psf->container_close = svx_close ; + + if ((error = pcm_init (psf))) + return error ; + + return 0 ; +} /* svx_open */ + +/*------------------------------------------------------------------------------ +*/ + +static int +svx_read_header (SF_PRIVATE *psf) +{ VHDR_CHUNK vhdr ; + unsigned int FORMsize, vhdrsize, dword, marker ; + int filetype = 0, parsestage = 0, done = 0 ; + int bytecount = 0, channels ; + + if (psf->filelength > SF_PLATFORM_S64 (0xffffffff)) + psf_log_printf (psf, "Warning : filelength > 0xffffffff. This is bad!!!!\n") ; + + memset (&vhdr, 0, sizeof (vhdr)) ; + psf_binheader_readf (psf, "p", 0) ; + + /* Set default number of channels. Modify later if necessary */ + psf->sf.channels = 1 ; + + psf->sf.format = SF_FORMAT_SVX ; + + while (! done) + { psf_binheader_readf (psf, "m", &marker) ; + switch (marker) + { case FORM_MARKER : + if (parsestage) + return SFE_SVX_NO_FORM ; + + psf_binheader_readf (psf, "E4", &FORMsize) ; + + if (FORMsize != psf->filelength - 2 * sizeof (dword)) + { dword = psf->filelength - 2 * sizeof (dword) ; + psf_log_printf (psf, "FORM : %d (should be %d)\n", FORMsize, dword) ; + FORMsize = dword ; + } + else + psf_log_printf (psf, "FORM : %d\n", FORMsize) ; + parsestage |= HAVE_FORM ; + break ; + + case SVX8_MARKER : + case SV16_MARKER : + if (! (parsestage & HAVE_FORM)) + return SFE_SVX_NO_FORM ; + filetype = marker ; + psf_log_printf (psf, " %M\n", marker) ; + parsestage |= HAVE_SVX ; + break ; + + case VHDR_MARKER : + if (! (parsestage & (HAVE_FORM | HAVE_SVX))) + return SFE_SVX_NO_FORM ; + + psf_binheader_readf (psf, "E4", &vhdrsize) ; + + psf_log_printf (psf, " VHDR : %d\n", vhdrsize) ; + + psf_binheader_readf (psf, "E4442114", &(vhdr.oneShotHiSamples), &(vhdr.repeatHiSamples), + &(vhdr.samplesPerHiCycle), &(vhdr.samplesPerSec), &(vhdr.octave), &(vhdr.compression), + &(vhdr.volume)) ; + + psf_log_printf (psf, " OneShotHiSamples : %d\n", vhdr.oneShotHiSamples) ; + psf_log_printf (psf, " RepeatHiSamples : %d\n", vhdr.repeatHiSamples) ; + psf_log_printf (psf, " samplesPerHiCycle : %d\n", vhdr.samplesPerHiCycle) ; + psf_log_printf (psf, " Sample Rate : %d\n", vhdr.samplesPerSec) ; + psf_log_printf (psf, " Octave : %d\n", vhdr.octave) ; + + psf_log_printf (psf, " Compression : %d => ", vhdr.compression) ; + + switch (vhdr.compression) + { case 0 : psf_log_printf (psf, "None.\n") ; + break ; + case 1 : psf_log_printf (psf, "Fibonacci delta\n") ; + break ; + case 2 : psf_log_printf (psf, "Exponential delta\n") ; + break ; + } ; + + psf_log_printf (psf, " Volume : %d\n", vhdr.volume) ; + + psf->sf.samplerate = vhdr.samplesPerSec ; + + if (filetype == SVX8_MARKER) + { psf->sf.format |= SF_FORMAT_PCM_S8 ; + psf->bytewidth = 1 ; + } + else if (filetype == SV16_MARKER) + { psf->sf.format |= SF_FORMAT_PCM_16 ; + psf->bytewidth = 2 ; + } ; + + parsestage |= HAVE_VHDR ; + break ; + + case BODY_MARKER : + if (! (parsestage & HAVE_VHDR)) + return SFE_SVX_NO_BODY ; + + psf_binheader_readf (psf, "E4", &dword) ; + psf->datalength = dword ; + + psf->dataoffset = psf_ftell (psf) ; + if (psf->dataoffset < 0) + return SFE_SVX_NO_BODY ; + + if (psf->datalength > psf->filelength - psf->dataoffset) + { psf_log_printf (psf, " BODY : %D (should be %D)\n", psf->datalength, psf->filelength - psf->dataoffset) ; + psf->datalength = psf->filelength - psf->dataoffset ; + } + else + psf_log_printf (psf, " BODY : %D\n", psf->datalength) ; + + parsestage |= HAVE_BODY ; + + if (! psf->sf.seekable) + break ; + + psf_fseek (psf, psf->datalength, SEEK_CUR) ; + break ; + + case NAME_MARKER : + if (! (parsestage & HAVE_SVX)) + return SFE_SVX_NO_FORM ; + + psf_binheader_readf (psf, "E4", &dword) ; + + psf_log_printf (psf, " %M : %d\n", marker, dword) ; + + if (strlen (psf->file.name.c) != dword) + { if (dword > sizeof (psf->file.name.c) - 1) + return SFE_SVX_BAD_NAME_LENGTH ; + + psf_binheader_readf (psf, "b", psf->file.name.c, dword) ; + psf->file.name.c [dword] = 0 ; + } + else + psf_binheader_readf (psf, "j", dword) ; + break ; + + case ANNO_MARKER : + if (! (parsestage & HAVE_SVX)) + return SFE_SVX_NO_FORM ; + + psf_binheader_readf (psf, "E4", &dword) ; + + psf_log_printf (psf, " %M : %d\n", marker, dword) ; + + psf_binheader_readf (psf, "j", dword) ; + break ; + + case CHAN_MARKER : + if (! (parsestage & HAVE_SVX)) + return SFE_SVX_NO_FORM ; + + psf_binheader_readf (psf, "E4", &dword) ; + + psf_log_printf (psf, " %M : %d\n", marker, dword) ; + + bytecount += psf_binheader_readf (psf, "E4", &channels) ; + + if (channels == 2 || channels == 4) + psf_log_printf (psf, " Channels : %d => mono\n", channels) ; + else if (channels == 6) + { psf->sf.channels = 2 ; + psf_log_printf (psf, " Channels : %d => stereo\n", channels) ; + } + else + psf_log_printf (psf, " Channels : %d *** assuming mono\n", channels) ; + + psf_binheader_readf (psf, "j", dword - bytecount) ; + break ; + + + case AUTH_MARKER : + case c_MARKER : + if (! (parsestage & HAVE_SVX)) + return SFE_SVX_NO_FORM ; + + psf_binheader_readf (psf, "E4", &dword) ; + + psf_log_printf (psf, " %M : %d\n", marker, dword) ; + + psf_binheader_readf (psf, "j", dword) ; + break ; + + default : + if (psf_isprint ((marker >> 24) & 0xFF) && psf_isprint ((marker >> 16) & 0xFF) + && psf_isprint ((marker >> 8) & 0xFF) && psf_isprint (marker & 0xFF)) + { psf_binheader_readf (psf, "E4", &dword) ; + + psf_log_printf (psf, "%M : %d (unknown marker)\n", marker, dword) ; + + psf_binheader_readf (psf, "j", dword) ; + break ; + } ; + if ((dword = psf_ftell (psf)) & 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) ; + done = 1 ; + } ; /* switch (marker) */ + + if (! psf->sf.seekable && (parsestage & HAVE_BODY)) + break ; + + if (psf_ftell (psf) >= psf->filelength - SIGNED_SIZEOF (dword)) + break ; + } ; /* while (1) */ + + if (vhdr.compression) + return SFE_SVX_BAD_COMP ; + + if (psf->dataoffset <= 0) + return SFE_SVX_NO_DATA ; + + return 0 ; +} /* svx_read_header */ + +static int +svx_close (SF_PRIVATE *psf) +{ + if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR) + svx_write_header (psf, SF_TRUE) ; + + return 0 ; +} /* svx_close */ + +static int +svx_write_header (SF_PRIVATE *psf, int calc_length) +{ static char annotation [] = "libsndfile by Erik de Castro Lopo\0\0\0" ; + sf_count_t current ; + + 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) ; + } ; + + psf->header [0] = 0 ; + psf->headindex = 0 ; + psf_fseek (psf, 0, SEEK_SET) ; + + /* FORM marker and FORM size. */ + psf_binheader_writef (psf, "Etm8", FORM_MARKER, (psf->filelength < 8) ? + psf->filelength * 0 : psf->filelength - 8) ; + + psf_binheader_writef (psf, "m", (psf->bytewidth == 1) ? SVX8_MARKER : SV16_MARKER) ; + + /* VHDR chunk. */ + psf_binheader_writef (psf, "Em4", VHDR_MARKER, sizeof (VHDR_CHUNK)) ; + /* VHDR : oneShotHiSamples, repeatHiSamples, samplesPerHiCycle */ + psf_binheader_writef (psf, "E444", psf->sf.frames, 0, 0) ; + /* VHDR : samplesPerSec, octave, compression */ + psf_binheader_writef (psf, "E211", psf->sf.samplerate, 1, 0) ; + /* VHDR : volume */ + psf_binheader_writef (psf, "E4", (psf->bytewidth == 1) ? 0xFF : 0xFFFF) ; + + if (psf->sf.channels == 2) + psf_binheader_writef (psf, "Em44", CHAN_MARKER, 4, 6) ; + + /* Filename and annotation strings. */ + psf_binheader_writef (psf, "Emsms", NAME_MARKER, psf->file.name.c, ANNO_MARKER, annotation) ; + + /* BODY marker and size. */ + psf_binheader_writef (psf, "Etm8", BODY_MARKER, (psf->datalength < 0) ? + psf->datalength * 0 : psf->datalength) ; + + 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 ; +} /* svx_write_header */ +