--- /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