X-Git-Url: https://scm.cri.ensmp.fr/git/Faustine.git/blobdiff_plain/1059e1cc0c2ecfa237406949aa26155b6a5b9154..66f23d4fabf89ad09adbd4dfc15ac6b5b2b7da83:/interpreter/lib/src/libsndfile-1.0.25/src/ircam.c diff --git a/interpreter/lib/src/libsndfile-1.0.25/src/ircam.c b/interpreter/lib/src/libsndfile-1.0.25/src/ircam.c new file mode 100644 index 0000000..4aa1173 --- /dev/null +++ b/interpreter/lib/src/libsndfile-1.0.25/src/ircam.c @@ -0,0 +1,322 @@ +/* +** Copyright (C) 2001-2011 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. +*/ + +/* 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 */ +