diff options
Diffstat (limited to 'libs/libsndfile/src/txw.c')
| -rw-r--r-- | libs/libsndfile/src/txw.c | 379 |
1 files changed, 0 insertions, 379 deletions
diff --git a/libs/libsndfile/src/txw.c b/libs/libsndfile/src/txw.c deleted file mode 100644 index 0f0add673d..0000000000 --- a/libs/libsndfile/src/txw.c +++ /dev/null @@ -1,379 +0,0 @@ -/* -** Copyright (C) 2002-2004 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 (psf && 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->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 ; - 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 -/* -** Do not edit or modify anything in this comment block. -** The arch-tag line is a file identity tag for the GNU Arch -** revision control system. -** -** arch-tag: 4d0ba7af-b1c5-46b4-a900-7c6f59fd9a89 -*/ |