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
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
/******************************************/
/*
play_raw.c
by Gary P. Scavone, 2001
Play a raw file. It is necessary that the
file be of the same format as defined below.
Uses blocking functionality.
*/
/******************************************/
#include "RtAudio.h"
#include <iostream>
#include <stdio.h>
/*
typedef char MY_TYPE;
#define FORMAT RTAUDIO_SINT8
#define SCALE 127.0
typedef signed short MY_TYPE;
#define FORMAT RTAUDIO_SINT16
#define SCALE 32767.0
typedef signed long MY_TYPE;
#define FORMAT RTAUDIO_SINT24
#define SCALE 8388607.0
typedef signed long MY_TYPE;
#define FORMAT RTAUDIO_SINT32
#define SCALE 2147483647.0
*/
typedef float MY_TYPE;
#define FORMAT RTAUDIO_FLOAT32
#define SCALE 1.0;
/*
typedef double MY_TYPE;
#define FORMAT RTAUDIO_FLOAT64
#define SCALE 1.0;
*/
void usage(void) {
/* Error function in case of incorrect command-line
argument specifications
*/
std::cout << "\nuseage: play_raw N fs file <device>\n";
std::cout << " where N = number of channels,\n";
std::cout << " fs = the sample rate, \n";
std::cout << " file = the raw file to play,\n";
std::cout << " and device = the device to use (default = 0).\n\n";
exit(0);
}
int main(int argc, char *argv[])
{
int chans, fs, buffer_size, count, device = 0;
long counter = 0;
MY_TYPE *buffer;
char *file;
FILE *fd;
RtAudio *audio;
// minimal command-line checking
if (argc != 4 && argc != 5 ) usage();
chans = (int) atoi(argv[1]);
fs = (int) atoi(argv[2]);
file = argv[3];
if ( argc == 5 )
device = (int) atoi(argv[4]);
fd = fopen(file,"rb");
if (!fd) {
std::cout << "can't find file!\n";
exit(0);
}
// Open the realtime output device
buffer_size = 512;
try {
audio = new RtAudio(device, chans, 0, 0,
FORMAT, fs, &buffer_size, 2);
}
catch (RtError &error) {
fclose(fd);
error.printMessage();
exit(EXIT_FAILURE);
}
try {
buffer = (MY_TYPE *) audio->getStreamBuffer();
audio->startStream();
}
catch (RtError &error) {
error.printMessage();
goto cleanup;
}
while (1) {
count = fread(buffer, chans * sizeof(MY_TYPE), buffer_size, fd);
if (count == buffer_size) {
try {
audio->tickStream();
}
catch (RtError &error) {
error.printMessage();
goto cleanup;
}
}
else
break;
counter += buffer_size;
}
try {
audio->stopStream();
}
catch (RtError &error) {
error.printMessage();
}
cleanup:
audio->closeStream();
delete audio;
fclose(fd);
return 0;
}
|
