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
|
// Copyright (C) 2003 Dolphin Project.
// This program 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, version 2.0.
// 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 General Public License 2.0 for more details.
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
// Official SVN repository and contact information can be found at
// http://code.google.com/p/dolphin-emu/
#include "Common.h"
#include "Thread.h"
#include "PulseAudioStream.h"
#define BUFFER_SIZE 4096
#define BUFFER_SIZE_BYTES (BUFFER_SIZE*2*2)
PulseAudio::PulseAudio(CMixer *mixer) : SoundStream(mixer), thread_data(0), handle(NULL)
{
mix_buffer = new u8[BUFFER_SIZE_BYTES];
}
PulseAudio::~PulseAudio()
{
delete [] mix_buffer;
}
static void *ThreadTrampoline(void *args)
{
reinterpret_cast<PulseAudio *>(args)->SoundLoop();
return NULL;
}
bool PulseAudio::Start()
{
thread = new Common::Thread(&ThreadTrampoline, this);
thread_data = 0;
return true;
}
void PulseAudio::Stop()
{
thread_data = 1;
delete thread;
thread = NULL;
}
void PulseAudio::Update()
{
// don't need to do anything here.
}
// Called on audio thread.
void PulseAudio::SoundLoop()
{
if (!PulseInit()) {
thread_data = 2;
return;
}
while (!thread_data)
{
int err;
int frames_to_deliver = 512;
m_mixer->Mix(reinterpret_cast<short *>(mix_buffer), frames_to_deliver);
if (pa_simple_write(handle, mix_buffer, frames_to_deliver * 2 * 2, &err) < 0)
{
ERROR_LOG(AUDIO, "pa_simple_write fail: %s", pa_strerror(err));
}
}
PulseShutdown();
thread_data = 2;
}
bool PulseAudio::PulseInit()
{
// The Sample format to use
static const pa_sample_spec ss = {
PA_SAMPLE_S16LE,
m_mixer->GetSampleRate(),
2
};
int err;
if (!(handle = pa_simple_new(NULL, "dolphin-emu", PA_STREAM_PLAYBACK, NULL,
"emulator", &ss, NULL, NULL, &err)))
{
ERROR_LOG(AUDIO, "PulseAudio open error: %s\n", pa_strerror(err));
return false;
}
NOTICE_LOG(AUDIO, "Pulse successfully initialized.\n");
return true;
}
void PulseAudio::PulseShutdown()
{
if (handle != NULL)
{
pa_simple_free(handle);
handle = NULL;
}
}
|
