X-Git-Url: https://scm.cri.ensmp.fr/git/Faustine.git/blobdiff_plain/1059e1cc0c2ecfa237406949aa26155b6a5b9154..66f23d4fabf89ad09adbd4dfc15ac6b5b2b7da83:/interpreter/lib/src/libsndfile-1.0.25/src/wve.c diff --git a/interpreter/lib/src/libsndfile-1.0.25/src/wve.c b/interpreter/lib/src/libsndfile-1.0.25/src/wve.c new file mode 100644 index 0000000..c13e7ab --- /dev/null +++ b/interpreter/lib/src/libsndfile-1.0.25/src/wve.c @@ -0,0 +1,209 @@ +/* +** Copyright (C) 2002-2011 Erik de Castro Lopo +** Copyright (C) 2007 Reuben Thomas +** +** 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, and other magic numbers. +*/ + +#define ALAW_MARKER MAKE_MARKER ('A', 'L', 'a', 'w') +#define SOUN_MARKER MAKE_MARKER ('S', 'o', 'u', 'n') +#define DFIL_MARKER MAKE_MARKER ('d', 'F', 'i', 'l') +#define ESSN_MARKER MAKE_MARKER ('e', '*', '*', '\0') +#define PSION_VERSION ((unsigned short) 3856) +#define PSION_DATAOFFSET 0x20 + +/*------------------------------------------------------------------------------ +** Private static functions. +*/ + +static int wve_read_header (SF_PRIVATE *psf) ; +static int wve_write_header (SF_PRIVATE *psf, int calc_length) ; +static int wve_close (SF_PRIVATE *psf) ; + +/*------------------------------------------------------------------------------ +** Public function. +*/ + +int +wve_open (SF_PRIVATE *psf) +{ int error = 0 ; + + if (psf->is_pipe) + return SFE_WVE_NO_PIPE ; + + if (psf->file.mode == SFM_READ || (psf->file.mode == SFM_RDWR && psf->filelength > 0)) + { if ((error = wve_read_header (psf))) + return error ; + } ; + + if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR) + { if ((SF_CONTAINER (psf->sf.format)) != SF_FORMAT_WVE) + return SFE_BAD_OPEN_FORMAT ; + + psf->endian = SF_ENDIAN_BIG ; + + if ((error = wve_write_header (psf, SF_FALSE))) + return error ; + + psf->write_header = wve_write_header ; + } ; + + psf->blockwidth = psf->bytewidth * psf->sf.channels ; + + psf->container_close = wve_close ; + + error = alaw_init (psf) ; + + return error ; +} /* wve_open */ + +/*------------------------------------------------------------------------------ +*/ + +static int +wve_read_header (SF_PRIVATE *psf) +{ int marker ; + unsigned short version, padding, repeats, trash ; + unsigned datalength ; + + /* Set position to start of file to begin reading header. */ + psf_binheader_readf (psf, "pm", 0, &marker) ; + if (marker != ALAW_MARKER) + { psf_log_printf (psf, "Could not find '%M'\n", ALAW_MARKER) ; + return SFE_WVE_NOT_WVE ; + } ; + + psf_binheader_readf (psf, "m", &marker) ; + if (marker != SOUN_MARKER) + { psf_log_printf (psf, "Could not find '%M'\n", SOUN_MARKER) ; + return SFE_WVE_NOT_WVE ; + } ; + + psf_binheader_readf (psf, "m", &marker) ; + if (marker != DFIL_MARKER) + { psf_log_printf (psf, "Could not find '%M'\n", DFIL_MARKER) ; + return SFE_WVE_NOT_WVE ; + } ; + + psf_binheader_readf (psf, "m", &marker) ; + if (marker != ESSN_MARKER) + { psf_log_printf (psf, "Could not find '%M'\n", ESSN_MARKER) ; + return SFE_WVE_NOT_WVE ; + } ; + + psf_binheader_readf (psf, "E2", &version) ; + + psf_log_printf (psf, "Psion Palmtop Alaw (.wve)\n" + " Sample Rate : 8000\n" + " Channels : 1\n" + " Encoding : A-law\n") ; + + if (version != PSION_VERSION) + psf_log_printf (psf, "Psion version %d should be %d\n", version, PSION_VERSION) ; + + psf_binheader_readf (psf, "E4", &datalength) ; + psf->dataoffset = PSION_DATAOFFSET ; + if (datalength != psf->filelength - psf->dataoffset) + { psf->datalength = psf->filelength - psf->dataoffset ; + psf_log_printf (psf, "Data length %d should be %D\n", datalength, psf->datalength) ; + } + else + psf->datalength = datalength ; + + psf_binheader_readf (psf, "E22222", &padding, &repeats, &trash, &trash, &trash) ; + + psf->sf.format = SF_FORMAT_WVE | SF_FORMAT_ALAW ; + psf->sf.samplerate = 8000 ; + psf->sf.frames = psf->datalength ; + psf->sf.channels = 1 ; + + return SFE_NO_ERROR ; +} /* wve_read_header */ + +/*------------------------------------------------------------------------------ +*/ + +static int +wve_write_header (SF_PRIVATE *psf, int calc_length) +{ sf_count_t current ; + unsigned datalen ; + + 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) ; + } ; + + /* Reset the current header length to zero. */ + psf->header [0] = 0 ; + psf->headindex = 0 ; + psf_fseek (psf, 0, SEEK_SET) ; + + /* Write header. */ + datalen = psf->datalength ; + psf_binheader_writef (psf, "Emmmm", ALAW_MARKER, SOUN_MARKER, DFIL_MARKER, ESSN_MARKER) ; + psf_binheader_writef (psf, "E2422222", PSION_VERSION, datalen, 0, 0, 0, 0, 0) ; + psf_fwrite (psf->header, psf->headindex, 1, psf) ; + + if (psf->sf.channels != 1) + return SFE_CHANNEL_COUNT ; + + if (psf->error) + return psf->error ; + + psf->dataoffset = psf->headindex ; + + if (current > 0) + psf_fseek (psf, current, SEEK_SET) ; + + return psf->error ; +} /* wve_write_header */ + +/*------------------------------------------------------------------------------ +*/ + +static int +wve_close (SF_PRIVATE *psf) +{ + if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR) + { /* Now we know for certain the length of the file we can re-write + ** the header. + */ + wve_write_header (psf, SF_TRUE) ; + } ; + + return 0 ; +} /* wve_close */