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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
* audiofile.cc
*
* Tue Jul 22 17:14:11 CEST 2008
* Copyright 2008 Bent Bisballe Nyeng
* deva@aasimon.org
****************************************************************************/
/*
* This file is part of DrumGizmo.
*
* DrumGizmo is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* DrumGizmo 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with DrumGizmo; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#include "audiofile.h"
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <sndfile.h>
#include <hugin.hpp>
#define LAZYLOAD
AudioFile::AudioFile(std::string filename)
{
is_loaded = false;
this->filename = filename;
data = NULL;
size = 0;
preloaded_data = NULL;
ref_count = 0;
magic = this;
}
AudioFile::~AudioFile()
{
magic = NULL;
unload();
}
bool AudioFile::isValid()
{
return this == magic;
}
void AudioFile::unload()
{
if(data == preloaded_data) {
delete data;
data = NULL;
size = 0;
}
else {
size = 0;
delete data;
data = NULL;
delete preloaded_data;
preloaded_data = NULL;
}
}
#define SIZE 512*4
void AudioFile::init()
{
//DEBUG(audiofile,"Initializing %p\n", this);
if(data) {
//DEBUG(audiofile,"\t already initialized\n");
return;
}
SF_INFO sf_info;
SNDFILE *fh = sf_open(filename.c_str(), SFM_READ, &sf_info);
if(!fh) {
ERR(audiofile,"SNDFILE Error (%s): %s\n",
filename.c_str(), sf_strerror(fh));
return;
}
int size = SIZE;
sample_t* data = new sample_t[size];
size = sf_read_float(fh, data, size);
//DEBUG(audiofile,"Lazy loaded %d samples\n", size);
sf_close(fh);
mutex.lock();
this->data = data;
this->size = size;
this->preloaded_data = data;
this->is_loaded = true;
mutex.unlock();
}
void AudioFile::loadNext()
{
if(this->data != this->preloaded_data) {
//DEBUG(audiofile,"Already completely loaded %p\n", this);
return;
}
SF_INFO sf_info;
SNDFILE *fh = sf_open(filename.c_str(), SFM_READ, &sf_info);
if(!fh) {
ERR(audiofile,"SNDFILE Error (%s): %s\n",
filename.c_str(), sf_strerror(fh));
return;
}
int r;
// int size_accum = 0;
sample_t* data = new sample_t[sf_info.frames];
memcpy(data, this->preloaded_data, this->size * sizeof(sample_t));
this->data = data;
sf_seek(fh, this->size, SEEK_SET);
// sample_t* data_buf = new sample_t[SIZE];
while(this->size < sf_info.frames) {
//DEBUG(audiofile,"Accumulated %d of %llu\n", size_accum, sf_info.frames);
//if( (r = sf_read_float(fh, data_buf, SIZE)) < 0) {
if( (r = sf_read_float(fh, &data[this->size], SIZE)) < 0) {
ERR(audiofile,"Error reading sound file\n");
break;
}
//size_accum += r;
//memcpy(data+size_accum, data_buf, sizeof(sample_t) * r);
this->size += r;
}
//delete data_buf;
//DEBUG(audiofile,"Finished loading %d samples %p\n", size, this);
sf_close(fh);
//mutex.lock();
//this->data = data;
//this->size = size;
//mutex.unlock();
}
void AudioFile::reset()
{
//DEBUG(audiofile,"Resetting audio file %p\n", this);
if(this->data == this->preloaded_data) {
//DEBUG(audiofile,"\tNot completely loaded - skipping %p\n", this);
return;
}
mutex.lock();
volatile sample_t* old_data = data;
this->size = SIZE;
this->data = this->preloaded_data;
//DEBUG(audiofile,"Deleting data %p\n", this);
delete old_data;
mutex.unlock();
}
void AudioFile::load()
{
/*
Lazy load of drum kits
init();
return;
*/
if(data) return;
SF_INFO sf_info;
SNDFILE *fh = sf_open(filename.c_str(), SFM_READ, &sf_info);
if(!fh) {
ERR(audiofile,"SNDFILE Error (%s): %s\n",
filename.c_str(), sf_strerror(fh));
return;
}
size = sf_info.frames;
sample_t* data = new sample_t[size];
size = sf_read_float(fh, data, size);
DEBUG(audiofile,"Loaded %d samples %p\n", size, this);
sf_close(fh);
mutex.lock();
this->data = data;
is_loaded = true;
mutex.unlock();
//DEBUG(audiofile, "Loading of %s completed.\n", filename.c_str());
}
bool AudioFile::isLoaded()
{
bool l;
mutex.lock();
l = is_loaded;
mutex.unlock();
return l;
}
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