--- /dev/null
+/*
+** Copyright (C) 1999-2011 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 <string.h>
+#include <ctype.h>
+#include <stdarg.h>
+
+#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 */
+
projects / Faustine.git / blobdiff