+++ /dev/null
-/*
-** Copyright (C) 2001-2011 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 "sndfile.h"
-#include "sfendian.h"
-#include "common.h"
-
-/*------------------------------------------------------------------------------
-** Macros to handle big/little endian issues.
-*/
-
-/* The IRCAM magic number is weird in that one byte in the number can have
-** values of 0x1, 0x2, 0x03 or 0x04. Hence the need for a marker and a mask.
-*/
-
-#define IRCAM_BE_MASK (MAKE_MARKER (0xFF, 0xFF, 0x00, 0xFF))
-#define IRCAM_BE_MARKER (MAKE_MARKER (0x64, 0xA3, 0x00, 0x00))
-
-#define IRCAM_LE_MASK (MAKE_MARKER (0xFF, 0x00, 0xFF, 0xFF))
-#define IRCAM_LE_MARKER (MAKE_MARKER (0x00, 0x00, 0xA3, 0x64))
-
-#define IRCAM_02B_MARKER (MAKE_MARKER (0x64, 0xA3, 0x02, 0x00))
-#define IRCAM_03L_MARKER (MAKE_MARKER (0x64, 0xA3, 0x03, 0x00))
-
-#define IRCAM_DATA_OFFSET (1024)
-
-/*------------------------------------------------------------------------------
-** Typedefs.
-*/
-
-enum
-{ IRCAM_PCM_16 = 0x00002,
- IRCAM_FLOAT = 0x00004,
- IRCAM_ALAW = 0x10001,
- IRCAM_ULAW = 0x20001,
- IRCAM_PCM_32 = 0x40004
-} ;
-
-
-/*------------------------------------------------------------------------------
-** Private static functions.
-*/
-
-static int ircam_close (SF_PRIVATE *psf) ;
-static int ircam_write_header (SF_PRIVATE *psf, int calc_length) ;
-static int ircam_read_header (SF_PRIVATE *psf) ;
-
-static int get_encoding (int subformat) ;
-
-static const char* get_encoding_str (int encoding) ;
-
-/*------------------------------------------------------------------------------
-** Public function.
-*/
-
-int
-ircam_open (SF_PRIVATE *psf)
-{ int subformat ;
- int error = SFE_NO_ERROR ;
-
- if (psf->file.mode == SFM_READ || (psf->file.mode == SFM_RDWR && psf->filelength > 0))
- { if ((error = ircam_read_header (psf)))
- return error ;
- } ;
-
- subformat = SF_CODEC (psf->sf.format) ;
-
- if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR)
- { if ((SF_CONTAINER (psf->sf.format)) != SF_FORMAT_IRCAM)
- return SFE_BAD_OPEN_FORMAT ;
-
- psf->endian = SF_ENDIAN (psf->sf.format) ;
- if (psf->endian == 0 || psf->endian == SF_ENDIAN_CPU)
- psf->endian = (CPU_IS_BIG_ENDIAN) ? SF_ENDIAN_BIG : SF_ENDIAN_LITTLE ;
-
- psf->dataoffset = IRCAM_DATA_OFFSET ;
-
- if ((error = ircam_write_header (psf, SF_FALSE)))
- return error ;
-
- psf->write_header = ircam_write_header ;
- } ;
-
- psf->container_close = ircam_close ;
-
- switch (subformat)
- { case SF_FORMAT_ULAW : /* 8-bit Ulaw encoding. */
- error = ulaw_init (psf) ;
- break ;
-
- case SF_FORMAT_ALAW : /* 8-bit Alaw encoding. */
- error = alaw_init (psf) ;
- break ;
-
- case SF_FORMAT_PCM_16 : /* 16-bit linear PCM. */
- case SF_FORMAT_PCM_32 : /* 32-bit linear PCM. */
- error = pcm_init (psf) ;
- break ;
-
- case SF_FORMAT_FLOAT : /* 32-bit linear PCM. */
- error = float32_init (psf) ;
- break ;
-
- default : break ;
- } ;
-
- return error ;
-} /* ircam_open */
-
-/*------------------------------------------------------------------------------
-*/
-
-static int
-ircam_read_header (SF_PRIVATE *psf)
-{ unsigned int marker, encoding ;
- float samplerate ;
- int error = SFE_NO_ERROR ;
-
- psf_binheader_readf (psf, "epmf44", 0, &marker, &samplerate, &(psf->sf.channels), &encoding) ;
-
- if (((marker & IRCAM_BE_MASK) != IRCAM_BE_MARKER) && ((marker & IRCAM_LE_MASK) != IRCAM_LE_MARKER))
- { psf_log_printf (psf, "marker: 0x%X\n", marker) ;
- return SFE_IRCAM_NO_MARKER ;
- } ;
-
- psf->endian = SF_ENDIAN_LITTLE ;
-
- if (psf->sf.channels > 256)
- { psf_binheader_readf (psf, "Epmf44", 0, &marker, &samplerate, &(psf->sf.channels), &encoding) ;
-
- /* Sanity checking for endian-ness detection. */
- if (psf->sf.channels > 256)
- { psf_log_printf (psf, "marker: 0x%X\n", marker) ;
- return SFE_IRCAM_BAD_CHANNELS ;
- } ;
-
- psf->endian = SF_ENDIAN_BIG ;
- } ;
-
- psf_log_printf (psf, "marker: 0x%X\n", marker) ;
-
- psf->sf.samplerate = (int) samplerate ;
-
- psf_log_printf (psf, " Sample Rate : %d\n"
- " Channels : %d\n"
- " Encoding : %X => %s\n", psf->sf.samplerate, psf->sf.channels, encoding, get_encoding_str (encoding)) ;
-
- switch (encoding)
- { case IRCAM_PCM_16 :
- psf->bytewidth = 2 ;
- psf->blockwidth = psf->sf.channels * psf->bytewidth ;
-
- psf->sf.format = SF_FORMAT_IRCAM | SF_FORMAT_PCM_16 ;
- break ;
-
- case IRCAM_PCM_32 :
- psf->bytewidth = 4 ;
- psf->blockwidth = psf->sf.channels * psf->bytewidth ;
-
- psf->sf.format = SF_FORMAT_IRCAM | SF_FORMAT_PCM_32 ;
- break ;
-
- case IRCAM_FLOAT :
- psf->bytewidth = 4 ;
- psf->blockwidth = psf->sf.channels * psf->bytewidth ;
-
- psf->sf.format = SF_FORMAT_IRCAM | SF_FORMAT_FLOAT ;
- break ;
-
- case IRCAM_ALAW :
- psf->bytewidth = 1 ;
- psf->blockwidth = psf->sf.channels * psf->bytewidth ;
-
- psf->sf.format = SF_FORMAT_IRCAM | SF_FORMAT_ALAW ;
- break ;
-
- case IRCAM_ULAW :
- psf->bytewidth = 1 ;
- psf->blockwidth = psf->sf.channels * psf->bytewidth ;
-
- psf->sf.format = SF_FORMAT_IRCAM | SF_FORMAT_ULAW ;
- break ;
-
- default :
- error = SFE_IRCAM_UNKNOWN_FORMAT ;
- break ;
- } ;
-
- if (psf->endian == SF_ENDIAN_BIG)
- psf->sf.format |= SF_ENDIAN_BIG ;
- else
- psf->sf.format |= SF_ENDIAN_LITTLE ;
-
- if (error)
- return error ;
-
- psf->dataoffset = IRCAM_DATA_OFFSET ;
- psf->datalength = psf->filelength - psf->dataoffset ;
-
- if (psf->sf.frames == 0 && psf->blockwidth)
- psf->sf.frames = psf->datalength / psf->blockwidth ;
-
- psf_log_printf (psf, " Samples : %d\n", psf->sf.frames) ;
-
- psf_binheader_readf (psf, "p", IRCAM_DATA_OFFSET) ;
-
- return 0 ;
-} /* ircam_read_header */
-
-static int
-ircam_close (SF_PRIVATE *psf)
-{
- psf_log_printf (psf, "close\n") ;
-
- return 0 ;
-} /* ircam_close */
-
-static int
-ircam_write_header (SF_PRIVATE *psf, int UNUSED (calc_length))
-{ int encoding ;
- float samplerate ;
- sf_count_t current ;
-
- if (psf->pipeoffset > 0)
- return 0 ;
-
- current = psf_ftell (psf) ;
-
- /* This also sets psf->endian. */
- encoding = get_encoding (SF_CODEC (psf->sf.format)) ;
-
- if (encoding == 0)
- return SFE_BAD_OPEN_FORMAT ;
-
- /* Reset the current header length to zero. */
- psf->header [0] = 0 ;
- psf->headindex = 0 ;
-
- if (psf->is_pipe == SF_FALSE)
- psf_fseek (psf, 0, SEEK_SET) ;
-
- samplerate = psf->sf.samplerate ;
-
- switch (psf->endian)
- { case SF_ENDIAN_BIG :
- psf_binheader_writef (psf, "Emf", IRCAM_02B_MARKER, samplerate) ;
- psf_binheader_writef (psf, "E44", psf->sf.channels, encoding) ;
- break ;
-
- case SF_ENDIAN_LITTLE :
- psf_binheader_writef (psf, "emf", IRCAM_03L_MARKER, samplerate) ;
- psf_binheader_writef (psf, "e44", psf->sf.channels, encoding) ;
- break ;
-
- default : return SFE_BAD_OPEN_FORMAT ;
- } ;
-
- psf_binheader_writef (psf, "z", (size_t) (IRCAM_DATA_OFFSET - psf->headindex)) ;
-
- /* Header construction complete so write it out. */
- psf_fwrite (psf->header, psf->headindex, 1, psf) ;
-
- if (psf->error)
- return psf->error ;
-
- if (current > 0)
- psf_fseek (psf, current, SEEK_SET) ;
-
- return psf->error ;
-} /* ircam_write_header */
-
-static int
-get_encoding (int subformat)
-{ switch (subformat)
- { case SF_FORMAT_PCM_16 : return IRCAM_PCM_16 ;
- case SF_FORMAT_PCM_32 : return IRCAM_PCM_32 ;
-
- case SF_FORMAT_FLOAT : return IRCAM_FLOAT ;
-
- case SF_FORMAT_ULAW : return IRCAM_ULAW ;
- case SF_FORMAT_ALAW : return IRCAM_ALAW ;
-
- default : break ;
- } ;
-
- return 0 ;
-} /* get_encoding */
-
-static const char*
-get_encoding_str (int encoding)
-{ switch (encoding)
- { case IRCAM_PCM_16 : return "16 bit PCM" ;
- case IRCAM_FLOAT : return "32 bit float" ;
- case IRCAM_ALAW : return "A law" ;
- case IRCAM_ULAW : return "u law" ;
- case IRCAM_PCM_32 : return "32 bit PCM" ;
- } ;
- return "Unknown encoding" ;
-} /* get_encoding_str */
-
projects / Faustine.git / blobdiff