1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
|
/* -*- 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 <stdlib.h>
#include <unistd.h>
#include <sndfile.h>
AudioFile::AudioFile(std::string filename, bool preload, int min_velocity)
{
this->filename = filename;
data = NULL;
size = 0;
char *p = (char*)filename.c_str() + filename.length() - 6;
int num = atoi(p);
if(num < 0) num *= -1;
//printf("%s", filename.c_str());
if(preload && num >= min_velocity) {
//printf(" ... loading");
load();
}
printf("."); fflush(stdout);
}
AudioFile::~AudioFile()
{
unload();
}
void AudioFile::unload()
{
if(!data) return;
free(data);
data = NULL;
size = 0;
}
#define THRESHOLD 0.0001
void AudioFile::load()
{
if(data) return;
SF_INFO sf_info;
SNDFILE *fh = sf_open(filename.c_str(), SFM_READ, &sf_info);
size = sf_seek(fh, 0, SEEK_END);
jack_default_audio_sample_t* tmp_data = (jack_default_audio_sample_t*)malloc(sizeof(jack_default_audio_sample_t)*size);
// printf("Loading %s, %d samples\n", filename.c_str(), size);
sf_seek(fh, 0, SEEK_SET);
sf_read_float(fh, tmp_data, size);
// for(size_t i = 0; i < size; i++) data[i] *= 0.1;
sf_close(fh);
// Find real size (crop 'silence')
while(size > 0 && tmp_data[size--] < THRESHOLD) {}
data = (jack_default_audio_sample_t*)malloc(sizeof(jack_default_audio_sample_t)*size);
for(size_t i = 0; i < size; i++) data[i] = tmp_data[i];
// ramp down
// if(size > 1024) for(size_t i = 1024; i >= 0; i--) data[size - i] *= (float)i/1024.0;
free(tmp_data);
}
|
