+++ /dev/null
-/*
-** Copyright (C) 2002-2011 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.
-*/
-
-/*===========================================================================
-** Yamaha TX16 Sampler Files.
-**
-** This header parser was written using information from the SoX source code
-** and trial and error experimentation. The code here however is all original.
-*/
-
-#include "sfconfig.h"
-
-#include <stdio.h>
-#include <fcntl.h>
-#include <string.h>
-#include <ctype.h>
-
-#include "sndfile.h"
-#include "sfendian.h"
-#include "common.h"
-
-#if (ENABLE_EXPERIMENTAL_CODE == 0)
-
-int
-txw_open (SF_PRIVATE *psf)
-{ if (psf)
- return SFE_UNIMPLEMENTED ;
- return 0 ;
-} /* txw_open */
-
-#else
-
-/*------------------------------------------------------------------------------
-** Markers.
-*/
-
-#define TXW_DATA_OFFSET 32
-
-#define TXW_LOOPED 0x49
-#define TXW_NO_LOOP 0xC9
-
-/*------------------------------------------------------------------------------
-** Private static functions.
-*/
-
-static int txw_read_header (SF_PRIVATE *psf) ;
-
-static sf_count_t txw_read_s (SF_PRIVATE *psf, short *ptr, sf_count_t len) ;
-static sf_count_t txw_read_i (SF_PRIVATE *psf, int *ptr, sf_count_t len) ;
-static sf_count_t txw_read_f (SF_PRIVATE *psf, float *ptr, sf_count_t len) ;
-static sf_count_t txw_read_d (SF_PRIVATE *psf, double *ptr, sf_count_t len) ;
-
-static sf_count_t txw_seek (SF_PRIVATE *psf, int mode, sf_count_t offset) ;
-
-/*------------------------------------------------------------------------------
-** Public functions.
-*/
-
-/*
- * ftp://ftp.t0.or.at/pub/sound/tx16w/samples.yamaha
- * ftp://ftp.t0.or.at/pub/sound/tx16w/faq/tx16w.tec
- * http://www.t0.or.at/~mpakesch/tx16w/
- *
- * from tx16w.c sox 12.15: (7-Oct-98) (Mark Lakata and Leigh Smith)
- * char filetype[6] "LM8953"
- * nulls[10],
- * dummy_aeg[6]
- * format 0x49 = looped, 0xC9 = non-looped
- * sample_rate 1 = 33 kHz, 2 = 50 kHz, 3 = 16 kHz
- * atc_length[3] if sample rate 0, [2]&0xfe = 6: 33kHz, 0x10:50, 0xf6: 16,
- * depending on [5] but to heck with it
- * rpt_length[3] (these are for looped samples, attack and loop lengths)
- * unused[2]
- */
-
-typedef struct
-{ unsigned char format, srate, sr2, sr3 ;
- unsigned short srhash ;
- unsigned int attacklen, repeatlen ;
-} TXW_HEADER ;
-
-#define ERROR_666 666
-
-int
-txw_open (SF_PRIVATE *psf)
-{ int error ;
-
- if (psf->file.mode != SFM_READ)
- return SFE_UNIMPLEMENTED ;
-
- if ((error = txw_read_header (psf)))
- return error ;
-
- if (psf_fseek (psf, psf->dataoffset, SEEK_SET) != psf->dataoffset)
- return SFE_BAD_SEEK ;
-
- psf->read_short = txw_read_s ;
- psf->read_int = txw_read_i ;
- psf->read_float = txw_read_f ;
- psf->read_double = txw_read_d ;
-
- psf->seek = txw_seek ;
-
- return 0 ;
-} /* txw_open */
-
-/*------------------------------------------------------------------------------
-*/
-
-static int
-txw_read_header (SF_PRIVATE *psf)
-{ TXW_HEADER txwh ;
- const char *strptr ;
-
- memset (&txwh, 0, sizeof (txwh)) ;
- memset (psf->u.cbuf, 0, sizeof (psf->u.cbuf)) ;
- psf_binheader_readf (psf, "pb", 0, psf->u.cbuf, 16) ;
-
- if (memcmp (psf->u.cbuf, "LM8953\0\0\0\0\0\0\0\0\0\0", 16) != 0)
- return ERROR_666 ;
-
- psf_log_printf (psf, "Read only : Yamaha TX-16 Sampler (.txw)\nLM8953\n") ;
-
- /* Jump 6 bytes (dummp_aeg), read format, read sample rate. */
- psf_binheader_readf (psf, "j11", 6, &txwh.format, &txwh.srate) ;
-
- /* 8 bytes (atc_length[3], rpt_length[3], unused[2]). */
- psf_binheader_readf (psf, "e33j", &txwh.attacklen, &txwh.repeatlen, 2) ;
- txwh.sr2 = (txwh.attacklen >> 16) & 0xFE ;
- txwh.sr3 = (txwh.repeatlen >> 16) & 0xFE ;
- txwh.attacklen &= 0x1FFFF ;
- txwh.repeatlen &= 0x1FFFF ;
-
- switch (txwh.format)
- { case TXW_LOOPED :
- strptr = "looped" ;
- break ;
-
- case TXW_NO_LOOP :
- strptr = "non-looped" ;
- break ;
-
- default :
- psf_log_printf (psf, " Format : 0x%02x => ?????\n", txwh.format) ;
- return ERROR_666 ;
- } ;
-
- psf_log_printf (psf, " Format : 0x%02X => %s\n", txwh.format, strptr) ;
-
- strptr = NULL ;
-
- switch (txwh.srate)
- { case 1 :
- psf->sf.samplerate = 33333 ;
- break ;
-
- case 2 :
- psf->sf.samplerate = 50000 ;
- break ;
-
- case 3 :
- psf->sf.samplerate = 16667 ;
- break ;
-
- default :
- /* This is ugly and braindead. */
- txwh.srhash = ((txwh.sr2 & 0xFE) << 8) | (txwh.sr3 & 0xFE) ;
- switch (txwh.srhash)
- { case ((0x6 << 8) | 0x52) :
- psf->sf.samplerate = 33333 ;
- break ;
-
- case ((0x10 << 8) | 0x52) :
- psf->sf.samplerate = 50000 ;
- break ;
-
- case ((0xF6 << 8) | 0x52) :
- psf->sf.samplerate = 166667 ;
- break ;
-
- default :
- strptr = " Sample Rate : Unknown : forcing to 33333\n" ;
- psf->sf.samplerate = 33333 ;
- break ;
- } ;
- } ;
-
-
- if (strptr)
- psf_log_printf (psf, strptr) ;
- else if (txwh.srhash)
- psf_log_printf (psf, " Sample Rate : %d (0x%X) => %d\n", txwh.srate, txwh.srhash, psf->sf.samplerate) ;
- else
- psf_log_printf (psf, " Sample Rate : %d => %d\n", txwh.srate, psf->sf.samplerate) ;
-
- if (txwh.format == TXW_LOOPED)
- { psf_log_printf (psf, " Attack Len : %d\n", txwh.attacklen) ;
- psf_log_printf (psf, " Repeat Len : %d\n", txwh.repeatlen) ;
- } ;
-
- psf->dataoffset = TXW_DATA_OFFSET ;
- psf->datalength = psf->filelength - TXW_DATA_OFFSET ;
- psf->sf.frames = 2 * psf->datalength / 3 ;
-
-
- if (psf->datalength % 3 == 1)
- psf_log_printf (psf, "*** File seems to be truncated, %d extra bytes.\n",
- (int) (psf->datalength % 3)) ;
-
- if (txwh.attacklen + txwh.repeatlen > psf->sf.frames)
- psf_log_printf (psf, "*** File has been truncated.\n") ;
-
- psf->sf.format = SF_FORMAT_TXW | SF_FORMAT_PCM_16 ;
- psf->sf.channels = 1 ;
- psf->sf.sections = 1 ;
- psf->sf.seekable = SF_TRUE ;
-
- return 0 ;
-} /* txw_read_header */
-
-static sf_count_t
-txw_read_s (SF_PRIVATE *psf, short *ptr, sf_count_t len)
-{ unsigned char *ucptr ;
- short sample ;
- int k, bufferlen, readcount, count ;
- sf_count_t total = 0 ;
-
- bufferlen = sizeof (psf->u.cbuf) / 3 ;
- bufferlen -= (bufferlen & 1) ;
- while (len > 0)
- { readcount = (len >= bufferlen) ? bufferlen : len ;
- count = psf_fread (psf->u.cbuf, 3, readcount, psf) ;
-
- ucptr = psf->u.ucbuf ;
- for (k = 0 ; k < readcount ; k += 2)
- { sample = (ucptr [0] << 8) | (ucptr [1] & 0xF0) ;
- ptr [total + k] = sample ;
- sample = (ucptr [2] << 8) | ((ucptr [1] & 0xF) << 4) ;
- ptr [total + k + 1] = sample ;
- ucptr += 3 ;
- } ;
-
- total += count ;
- len -= readcount ;
- } ;
-
- return total ;
-} /* txw_read_s */
-
-static sf_count_t
-txw_read_i (SF_PRIVATE *psf, int *ptr, sf_count_t len)
-{ unsigned char *ucptr ;
- short sample ;
- int k, bufferlen, readcount, count ;
- sf_count_t total = 0 ;
-
- bufferlen = sizeof (psf->u.cbuf) / 3 ;
- bufferlen -= (bufferlen & 1) ;
- while (len > 0)
- { readcount = (len >= bufferlen) ? bufferlen : len ;
- count = psf_fread (psf->u.cbuf, 3, readcount, psf) ;
-
- ucptr = psf->u.ucbuf ;
- for (k = 0 ; k < readcount ; k += 2)
- { sample = (ucptr [0] << 8) | (ucptr [1] & 0xF0) ;
- ptr [total + k] = sample << 16 ;
- sample = (ucptr [2] << 8) | ((ucptr [1] & 0xF) << 4) ;
- ptr [total + k + 1] = sample << 16 ;
- ucptr += 3 ;
- } ;
-
- total += count ;
- len -= readcount ;
- } ;
-
- return total ;
-} /* txw_read_i */
-
-static sf_count_t
-txw_read_f (SF_PRIVATE *psf, float *ptr, sf_count_t len)
-{ unsigned char *ucptr ;
- short sample ;
- int k, bufferlen, readcount, count ;
- sf_count_t total = 0 ;
- float normfact ;
-
- if (psf->norm_float == SF_TRUE)
- normfact = 1.0 / 0x8000 ;
- else
- normfact = 1.0 / 0x10 ;
-
- bufferlen = sizeof (psf->u.cbuf) / 3 ;
- bufferlen -= (bufferlen & 1) ;
- while (len > 0)
- { readcount = (len >= bufferlen) ? bufferlen : len ;
- count = psf_fread (psf->u.cbuf, 3, readcount, psf) ;
-
- ucptr = psf->u.ucbuf ;
- for (k = 0 ; k < readcount ; k += 2)
- { sample = (ucptr [0] << 8) | (ucptr [1] & 0xF0) ;
- ptr [total + k] = normfact * sample ;
- sample = (ucptr [2] << 8) | ((ucptr [1] & 0xF) << 4) ;
- ptr [total + k + 1] = normfact * sample ;
- ucptr += 3 ;
- } ;
-
- total += count ;
- len -= readcount ;
- } ;
-
- return total ;
-} /* txw_read_f */
-
-static sf_count_t
-txw_read_d (SF_PRIVATE *psf, double *ptr, sf_count_t len)
-{ unsigned char *ucptr ;
- short sample ;
- int k, bufferlen, readcount, count ;
- sf_count_t total = 0 ;
- double normfact ;
-
- if (psf->norm_double == SF_TRUE)
- normfact = 1.0 / 0x8000 ;
- else
- normfact = 1.0 / 0x10 ;
-
- bufferlen = sizeof (psf->u.cbuf) / 3 ;
- bufferlen -= (bufferlen & 1) ;
- while (len > 0)
- { readcount = (len >= bufferlen) ? bufferlen : len ;
- count = psf_fread (psf->u.cbuf, 3, readcount, psf) ;
-
- ucptr = psf->u.ucbuf ;
- for (k = 0 ; k < readcount ; k += 2)
- { sample = (ucptr [0] << 8) | (ucptr [1] & 0xF0) ;
- ptr [total + k] = normfact * sample ;
- sample = (ucptr [2] << 8) | ((ucptr [1] & 0xF) << 4) ;
- ptr [total + k + 1] = normfact * sample ;
- ucptr += 3 ;
- } ;
-
- total += count ;
- len -= readcount ;
- } ;
-
- return total ;
-} /* txw_read_d */
-
-static sf_count_t
-txw_seek (SF_PRIVATE *psf, int mode, sf_count_t offset)
-{ if (psf && mode)
- return offset ;
-
- return 0 ;
-} /* txw_seek */
-
-#endif
projects / Faustine.git / blobdiff