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
|
#include "../include/AudioPlayer.hpp"
#include <unistd.h>
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <pulse/simple.h>
#include <pulse/error.h>
#define BUFSIZE 4096
namespace gsr {
AudioPlayer::~AudioPlayer() {
if(thread.joinable()) {
stop_playing_audio = true;
thread.join();
}
if(audio_file_fd > 0)
close(audio_file_fd);
}
bool AudioPlayer::play(const char *filepath) {
if(thread.joinable()) {
stop_playing_audio = true;
thread.join();
}
stop_playing_audio = false;
audio_file_fd = open(filepath, O_RDONLY);
if(audio_file_fd == -1)
return false;
thread = std::thread([this]() {
const pa_sample_spec ss = {
.format = PA_SAMPLE_S16LE,
.rate = 48000,
.channels = 2
};
pa_simple *s = NULL;
int error;
/* Create a new playback stream */
if(!(s = pa_simple_new(NULL, "gsr-ui-audio-playback", PA_STREAM_PLAYBACK, NULL, "playback", &ss, NULL, NULL, &error))) {
fprintf(stderr, __FILE__": pa_simple_new() failed: %s\n", pa_strerror(error));
goto finish;
}
uint8_t buf[BUFSIZE];
for(;;) {
ssize_t r;
if(stop_playing_audio)
goto finish;
if((r = read(audio_file_fd, buf, sizeof(buf))) <= 0) {
if(r == 0) /* EOF */
break;
fprintf(stderr, __FILE__": read() failed: %s\n", strerror(errno));
goto finish;
}
if(pa_simple_write(s, buf, (size_t) r, &error) < 0) {
fprintf(stderr, __FILE__": pa_simple_write() failed: %s\n", pa_strerror(error));
goto finish;
}
}
if(pa_simple_drain(s, &error) < 0) {
fprintf(stderr, __FILE__": pa_simple_drain() failed: %s\n", pa_strerror(error));
goto finish;
}
finish:
if(s)
pa_simple_free(s);
close(audio_file_fd);
audio_file_fd = -1;
});
return true;
}
}
|
