+++ /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.
-*/
-
-#include "sfendian.h"
-
-#include <stdlib.h>
-
-#include "sndfile.h"
-#include "common.h"
-
-#define INTERLEAVE_CHANNELS 6
-
-typedef struct
-{ double buffer [SF_BUFFER_LEN / sizeof (double)] ;
-
- sf_count_t channel_len ;
-
- sf_count_t (*read_short) (SF_PRIVATE*, short *ptr, sf_count_t len) ;
- sf_count_t (*read_int) (SF_PRIVATE*, int *ptr, sf_count_t len) ;
- sf_count_t (*read_float) (SF_PRIVATE*, float *ptr, sf_count_t len) ;
- sf_count_t (*read_double) (SF_PRIVATE*, double *ptr, sf_count_t len) ;
-
-} INTERLEAVE_DATA ;
-
-
-
-static sf_count_t interleave_read_short (SF_PRIVATE *psf, short *ptr, sf_count_t len) ;
-static sf_count_t interleave_read_int (SF_PRIVATE *psf, int *ptr, sf_count_t len) ;
-static sf_count_t interleave_read_float (SF_PRIVATE *psf, float *ptr, sf_count_t len) ;
-static sf_count_t interleave_read_double (SF_PRIVATE *psf, double *ptr, sf_count_t len) ;
-
-static sf_count_t interleave_seek (SF_PRIVATE*, int mode, sf_count_t samples_from_start) ;
-
-
-
-
-int
-interleave_init (SF_PRIVATE *psf)
-{ INTERLEAVE_DATA *pdata ;
-
- if (psf->file.mode != SFM_READ)
- return SFE_INTERLEAVE_MODE ;
-
- if (psf->interleave)
- { psf_log_printf (psf, "*** Weird, already have interleave.\n") ;
- return 666 ;
- } ;
-
- /* Free this in sf_close() function. */
- if (! (pdata = malloc (sizeof (INTERLEAVE_DATA))))
- return SFE_MALLOC_FAILED ;
-
-puts ("interleave_init") ;
-
- psf->interleave = pdata ;
-
- /* Save the existing methods. */
- pdata->read_short = psf->read_short ;
- pdata->read_int = psf->read_int ;
- pdata->read_float = psf->read_float ;
- pdata->read_double = psf->read_double ;
-
- pdata->channel_len = psf->sf.frames * psf->bytewidth ;
-
- /* Insert our new methods. */
- psf->read_short = interleave_read_short ;
- psf->read_int = interleave_read_int ;
- psf->read_float = interleave_read_float ;
- psf->read_double = interleave_read_double ;
-
- psf->seek = interleave_seek ;
-
- return 0 ;
-} /* pcm_interleave_init */
-
-/*------------------------------------------------------------------------------
-*/
-
-static sf_count_t
-interleave_read_short (SF_PRIVATE *psf, short *ptr, sf_count_t len)
-{ INTERLEAVE_DATA *pdata ;
- sf_count_t offset, templen ;
- int chan, count, k ;
- short *inptr, *outptr ;
-
- if (! (pdata = psf->interleave))
- return 0 ;
-
- inptr = (short*) pdata->buffer ;
-
- for (chan = 0 ; chan < psf->sf.channels ; chan++)
- { outptr = ptr + chan ;
-
- offset = psf->dataoffset + chan * psf->bytewidth * psf->read_current ;
-
- if (psf_fseek (psf, offset, SEEK_SET) != offset)
- { psf->error = SFE_INTERLEAVE_SEEK ;
- return 0 ;
- } ;
-
- templen = len / psf->sf.channels ;
-
- while (templen > 0)
- { if (templen > SIGNED_SIZEOF (pdata->buffer) / SIGNED_SIZEOF (short))
- count = SIGNED_SIZEOF (pdata->buffer) / SIGNED_SIZEOF (short) ;
- else
- count = (int) templen ;
-
- if (pdata->read_short (psf, inptr, count) != count)
- { psf->error = SFE_INTERLEAVE_READ ;
- return 0 ;
- } ;
-
- for (k = 0 ; k < count ; k++)
- { *outptr = inptr [k] ;
- outptr += psf->sf.channels ;
- } ;
-
- templen -= count ;
- } ;
- } ;
-
- return len ;
-} /* interleave_read_short */
-
-static sf_count_t
-interleave_read_int (SF_PRIVATE *psf, int *ptr, sf_count_t len)
-{ INTERLEAVE_DATA *pdata ;
- sf_count_t offset, templen ;
- int chan, count, k ;
- int *inptr, *outptr ;
-
- if (! (pdata = psf->interleave))
- return 0 ;
-
- inptr = (int*) pdata->buffer ;
-
- for (chan = 0 ; chan < psf->sf.channels ; chan++)
- { outptr = ptr + chan ;
-
- offset = psf->dataoffset + chan * psf->bytewidth * psf->read_current ;
-
- if (psf_fseek (psf, offset, SEEK_SET) != offset)
- { psf->error = SFE_INTERLEAVE_SEEK ;
- return 0 ;
- } ;
-
- templen = len / psf->sf.channels ;
-
- while (templen > 0)
- { if (templen > SIGNED_SIZEOF (pdata->buffer) / SIGNED_SIZEOF (int))
- count = SIGNED_SIZEOF (pdata->buffer) / SIGNED_SIZEOF (int) ;
- else
- count = (int) templen ;
-
- if (pdata->read_int (psf, inptr, count) != count)
- { psf->error = SFE_INTERLEAVE_READ ;
- return 0 ;
- } ;
-
- for (k = 0 ; k < count ; k++)
- { *outptr = inptr [k] ;
- outptr += psf->sf.channels ;
- } ;
-
- templen -= count ;
- } ;
- } ;
-
- return len ;
-} /* interleave_read_int */
-
-static sf_count_t
-interleave_read_float (SF_PRIVATE *psf, float *ptr, sf_count_t len)
-{ INTERLEAVE_DATA *pdata ;
- sf_count_t offset, templen ;
- int chan, count, k ;
- float *inptr, *outptr ;
-
- if (! (pdata = psf->interleave))
- return 0 ;
-
- inptr = (float*) pdata->buffer ;
-
- for (chan = 0 ; chan < psf->sf.channels ; chan++)
- { outptr = ptr + chan ;
-
- offset = psf->dataoffset + pdata->channel_len * chan + psf->read_current * psf->bytewidth ;
-
-/*-printf ("chan : %d read_current : %6lld offset : %6lld\n", chan, psf->read_current, offset) ;-*/
-
- if (psf_fseek (psf, offset, SEEK_SET) != offset)
- { psf->error = SFE_INTERLEAVE_SEEK ;
-/*-puts ("interleave_seek error") ; exit (1) ;-*/
- return 0 ;
- } ;
-
- templen = len / psf->sf.channels ;
-
- while (templen > 0)
- { if (templen > SIGNED_SIZEOF (pdata->buffer) / SIGNED_SIZEOF (float))
- count = SIGNED_SIZEOF (pdata->buffer) / SIGNED_SIZEOF (float) ;
- else
- count = (int) templen ;
-
- if (pdata->read_float (psf, inptr, count) != count)
- { psf->error = SFE_INTERLEAVE_READ ;
-/*-puts ("interleave_read error") ; exit (1) ;-*/
- return 0 ;
- } ;
-
- for (k = 0 ; k < count ; k++)
- { *outptr = inptr [k] ;
- outptr += psf->sf.channels ;
- } ;
-
- templen -= count ;
- } ;
- } ;
-
- return len ;
-} /* interleave_read_float */
-
-static sf_count_t
-interleave_read_double (SF_PRIVATE *psf, double *ptr, sf_count_t len)
-{ INTERLEAVE_DATA *pdata ;
- sf_count_t offset, templen ;
- int chan, count, k ;
- double *inptr, *outptr ;
-
- if (! (pdata = psf->interleave))
- return 0 ;
-
- inptr = (double*) pdata->buffer ;
-
- for (chan = 0 ; chan < psf->sf.channels ; chan++)
- { outptr = ptr + chan ;
-
- offset = psf->dataoffset + chan * psf->bytewidth * psf->read_current ;
-
- if (psf_fseek (psf, offset, SEEK_SET) != offset)
- { psf->error = SFE_INTERLEAVE_SEEK ;
- return 0 ;
- } ;
-
- templen = len / psf->sf.channels ;
-
- while (templen > 0)
- { if (templen > SIGNED_SIZEOF (pdata->buffer) / SIGNED_SIZEOF (double))
- count = SIGNED_SIZEOF (pdata->buffer) / SIGNED_SIZEOF (double) ;
- else
- count = (int) templen ;
-
- if (pdata->read_double (psf, inptr, count) != count)
- { psf->error = SFE_INTERLEAVE_READ ;
- return 0 ;
- } ;
-
- for (k = 0 ; k < count ; k++)
- { *outptr = inptr [k] ;
- outptr += psf->sf.channels ;
- } ;
-
- templen -= count ;
- } ;
- } ;
-
- return len ;
-} /* interleave_read_double */
-
-/*------------------------------------------------------------------------------
-*/
-
-static sf_count_t
-interleave_seek (SF_PRIVATE *psf, int mode, sf_count_t samples_from_start)
-{ psf = psf ; mode = mode ;
-
- /*
- ** Do nothing here. This is a place holder to prevent the default
- ** seek function from being called.
- */
-
- return samples_from_start ;
-} /* interleave_seek */
-
projects / Faustine.git / blobdiff