X-Git-Url: https://scm.cri.ensmp.fr/git/Faustine.git/blobdiff_plain/e775f23a10c4ba37fc1a762299f52cd0d71593b7..f1f94803668061f90a5ce88bf06ee72bba8e41a5:/interpretor/lib/src/libsndfile-1.0.25/src/avr.c diff --git a/interpretor/lib/src/libsndfile-1.0.25/src/avr.c b/interpretor/lib/src/libsndfile-1.0.25/src/avr.c new file mode 100644 index 0000000..dd09b46 --- /dev/null +++ b/interpretor/lib/src/libsndfile-1.0.25/src/avr.c @@ -0,0 +1,247 @@ +/* +** Copyright (C) 2004-2011 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 "sndfile.h" +#include "sfendian.h" +#include "common.h" + +#define TWOBIT_MARKER (MAKE_MARKER ('2', 'B', 'I', 'T')) +#define AVR_HDR_SIZE 128 + +#define SFE_AVR_X 666 + +/* +** From: hyc@hanauma.Jpl.Nasa.Gov (Howard Chu) +** +** A lot of PD software exists to play Mac .snd files on the ST. One other +** format that seems pretty popular (used by a number of commercial packages) +** is the AVR format (from Audio Visual Research). This format has a 128 byte +** header that looks like this (its actually packed, but thats not portable): +*/ + +typedef struct +{ int marker ; /* 2BIT */ + char name [8] ; /* null-padded sample name */ + short mono ; /* 0 = mono, 0xffff = stereo */ + short rez ; /* 8 = 8 bit, 16 = 16 bit */ + short sign ; /* 0 = unsigned, 0xffff = signed */ + + short loop ; /* 0 = no loop, 0xffff = looping sample */ + short midi ; /* 0xffff = no MIDI note assigned, */ + /* 0xffXX = single key note assignment */ + /* 0xLLHH = key split, low/hi note */ + int srate ; /* sample frequency in hertz */ + int frames ; /* sample length in bytes or words (see rez) */ + int lbeg ; /* offset to start of loop in bytes or words. */ + /* set to zero if unused */ + int lend ; /* offset to end of loop in bytes or words. */ + /* set to sample length if unused */ + short res1 ; /* Reserved, MIDI keyboard split */ + short res2 ; /* Reserved, sample compression */ + short res3 ; /* Reserved */ + char ext [20] ; /* Additional filename space, used if (name[7] != 0) */ + char user [64] ; /* User defined. Typically ASCII message */ +} AVR_HEADER ; + +/*------------------------------------------------------------------------------ +** Private static functions. +*/ + +static int avr_close (SF_PRIVATE *psf) ; + +static int avr_read_header (SF_PRIVATE *psf) ; +static int avr_write_header (SF_PRIVATE *psf, int calc_length) ; + +/*------------------------------------------------------------------------------ +** Public function. +*/ + +int +avr_open (SF_PRIVATE *psf) +{ int error = 0 ; + + if (psf->file.mode == SFM_READ || (psf->file.mode == SFM_RDWR && psf->filelength > 0)) + { if ((error = avr_read_header (psf))) + return error ; + } ; + + if ((SF_CONTAINER (psf->sf.format)) != SF_FORMAT_AVR) + return SFE_BAD_OPEN_FORMAT ; + + if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR) + { psf->endian = SF_ENDIAN (psf->sf.format) ; + psf->endian = SF_ENDIAN_BIG ; + + if (avr_write_header (psf, SF_FALSE)) + return psf->error ; + + psf->write_header = avr_write_header ; + } ; + + psf->container_close = avr_close ; + + psf->blockwidth = psf->bytewidth * psf->sf.channels ; + + error = pcm_init (psf) ; + + return error ; +} /* avr_open */ + +static int +avr_read_header (SF_PRIVATE *psf) +{ AVR_HEADER hdr ; + + memset (&hdr, 0, sizeof (hdr)) ; + + psf_binheader_readf (psf, "pmb", 0, &hdr.marker, &hdr.name, sizeof (hdr.name)) ; + psf_log_printf (psf, "%M\n", hdr.marker) ; + + if (hdr.marker != TWOBIT_MARKER) + return SFE_AVR_X ; + + psf_log_printf (psf, " Name : %s\n", hdr.name) ; + + psf_binheader_readf (psf, "E22222", &hdr.mono, &hdr.rez, &hdr.sign, &hdr.loop, &hdr.midi) ; + + psf->sf.channels = (hdr.mono & 1) + 1 ; + + psf_log_printf (psf, " Channels : %d\n Bit width : %d\n Signed : %s\n", + (hdr.mono & 1) + 1, hdr.rez, hdr.sign ? "yes" : "no") ; + + switch ((hdr.rez << 16) + (hdr.sign & 1)) + { case ((8 << 16) + 0) : + psf->sf.format = SF_FORMAT_AVR | SF_FORMAT_PCM_U8 ; + psf->bytewidth = 1 ; + break ; + + case ((8 << 16) + 1) : + psf->sf.format = SF_FORMAT_AVR | SF_FORMAT_PCM_S8 ; + psf->bytewidth = 1 ; + break ; + + case ((16 << 16) + 1) : + psf->sf.format = SF_FORMAT_AVR | SF_FORMAT_PCM_16 ; + psf->bytewidth = 2 ; + break ; + + default : + psf_log_printf (psf, "Error : bad rez/sign combination.\n") ; + return SFE_AVR_X ; + } ; + + psf_binheader_readf (psf, "E4444", &hdr.srate, &hdr.frames, &hdr.lbeg, &hdr.lend) ; + + psf->sf.frames = hdr.frames ; + psf->sf.samplerate = hdr.srate ; + + psf_log_printf (psf, " Frames : %D\n", psf->sf.frames) ; + psf_log_printf (psf, " Sample rate : %d\n", psf->sf.samplerate) ; + + psf_binheader_readf (psf, "E222", &hdr.res1, &hdr.res2, &hdr.res3) ; + psf_binheader_readf (psf, "bb", hdr.ext, sizeof (hdr.ext), hdr.user, sizeof (hdr.user)) ; + + psf_log_printf (psf, " Ext : %s\n User : %s\n", hdr.ext, hdr.user) ; + + psf->endian = SF_ENDIAN_BIG ; + + psf->dataoffset = AVR_HDR_SIZE ; + psf->datalength = hdr.frames * (hdr.rez / 8) ; + + if (psf->fileoffset > 0) + psf->filelength = AVR_HDR_SIZE + psf->datalength ; + + if (psf_ftell (psf) != psf->dataoffset) + psf_binheader_readf (psf, "j", psf->dataoffset - psf_ftell (psf)) ; + + psf->blockwidth = psf->sf.channels * psf->bytewidth ; + + if (psf->sf.frames == 0 && psf->blockwidth) + psf->sf.frames = (psf->filelength - psf->dataoffset) / psf->blockwidth ; + + return 0 ; +} /* avr_read_header */ + +static int +avr_write_header (SF_PRIVATE *psf, int calc_length) +{ sf_count_t current ; + int sign ; + + if (psf->pipeoffset > 0) + return 0 ; + + 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 ; + + /* + ** Only attempt to seek if we are not writng to a pipe. If we are + ** writing to a pipe we shouldn't be here anyway. + */ + if (psf->is_pipe == SF_FALSE) + psf_fseek (psf, 0, SEEK_SET) ; + + psf_binheader_writef (psf, "Emz22", TWOBIT_MARKER, make_size_t (8), + psf->sf.channels == 2 ? 0xFFFF : 0, psf->bytewidth * 8) ; + + sign = ((SF_CODEC (psf->sf.format)) == SF_FORMAT_PCM_U8) ? 0 : 0xFFFF ; + + psf_binheader_writef (psf, "E222", sign, 0, 0xFFFF) ; + psf_binheader_writef (psf, "E4444", psf->sf.samplerate, psf->sf.frames, 0, 0) ; + + psf_binheader_writef (psf, "E222zz", 0, 0, 0, make_size_t (20), make_size_t (64)) ; + + /* Header construction complete so write it out. */ + 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 ; +} /* avr_write_header */ + +static int +avr_close (SF_PRIVATE *psf) +{ + if (psf->file.mode == SFM_WRITE || psf->file.mode == SFM_RDWR) + avr_write_header (psf, SF_TRUE) ; + + return 0 ; +} /* avr_close */ +