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/*
** Copyright (C) 2008-2011 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 "sfconfig.h"
#include <stdio.h>
#include <fcntl.h>
#include <string.h>
#include <ctype.h>
#include <time.h>
#include <math.h>
#if HAVE_UNISTD_H
#include <unistd.h>
#endif
#include "sndfile.h"
#include "sfendian.h"
#include "common.h"
#if (ENABLE_EXPERIMENTAL_CODE && HAVE_EXTERNAL_LIBS)
#include <ogg/ogg.h>
#include "ogg.h"
typedef struct
{ int32_t serialno ;
void * state ;
} OPCM_PRIVATE ;
static int opcm_read_header (SF_PRIVATE * psf) ;
static int opcm_close (SF_PRIVATE *psf) ;
int
ogg_pcm_open (SF_PRIVATE *psf)
{ OGG_PRIVATE* odata = psf->container_data ;
OPCM_PRIVATE* opcm = calloc (1, sizeof (OPCM_PRIVATE)) ;
int error = 0 ;
if (odata == NULL)
{ psf_log_printf (psf, "%s : odata is NULL???\n", __func__) ;
return SFE_INTERNAL ;
} ;
psf->codec_data = opcm ;
if (opcm == NULL)
return SFE_MALLOC_FAILED ;
if (psf->file.mode == SFM_RDWR)
return SFE_BAD_MODE_RW ;
if (psf->file.mode == SFM_READ)
{ /* Call this here so it only gets called once, so no memory is leaked. */
ogg_sync_init (&odata->osync) ;
if ((error = opcm_read_header (psf)))
return error ;
#if 0
psf->read_short = opcm_read_s ;
psf->read_int = opcm_read_i ;
psf->read_float = opcm_read_f ;
psf->read_double = opcm_read_d ;
psf->sf.frames = opcm_length (psf) ;
#endif
} ;
psf->codec_close = opcm_close ;
if (psf->file.mode == SFM_WRITE)
{
#if 0
/* Set the default opcm quality here. */
vdata->quality = 0.4 ;
psf->write_header = opcm_write_header ;
psf->write_short = opcm_write_s ;
psf->write_int = opcm_write_i ;
psf->write_float = opcm_write_f ;
psf->write_double = opcm_write_d ;
#endif
psf->sf.frames = SF_COUNT_MAX ; /* Unknown really */
psf->str_flags = SF_STR_ALLOW_START ;
} ;
psf->bytewidth = 1 ;
psf->blockwidth = psf->bytewidth * psf->sf.channels ;
#if 0
psf->seek = opcm_seek ;
psf->command = opcm_command ;
#endif
/* FIXME, FIXME, FIXME : Hack these here for now and correct later. */
psf->sf.format = SF_FORMAT_OGG | SF_FORMAT_SPEEX ;
psf->sf.sections = 1 ;
psf->datalength = 1 ;
psf->dataoffset = 0 ;
/* End FIXME. */
return error ;
} /* ogg_pcm_open */
static int
opcm_read_header (SF_PRIVATE * UNUSED (psf))
{
return 0 ;
} /* opcm_read_header */
static int
opcm_close (SF_PRIVATE * UNUSED (psf))
{
return 0 ;
} /* opcm_close */
/*
encoded_speex_frames = (frames_per_packet * Packets)
= 1 * 272
= 272
audio_samples = encoded_speex_frames * frame_size
= 272 * 640
= 174080
duration = audio_samples / rate
= 174080 / 44100
= 3.947
*/
#else /* ENABLE_EXPERIMENTAL_CODE && HAVE_EXTERNAL_LIBS */
int
ogg_pcm_open (SF_PRIVATE *psf)
{
psf_log_printf (psf, "This version of libsndfile was compiled without Ogg/Speex support.\n") ;
return SFE_UNIMPLEMENTED ;
} /* ogg_pcm_open */
#endif
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