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
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
|
// Copyright 2013 Dolphin Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#ifdef HAVE_OPENSL_ES
#include "AudioCommon/OpenSLESStream.h"
#include <cmath>
#include <SLES/OpenSLES.h>
#include <SLES/OpenSLES_Android.h>
#include <jni.h>
#include "Common/Assert.h"
#include "Common/CommonTypes.h"
#include "Common/Logging/Log.h"
#include "Core/ConfigManager.h"
#include "jni/AndroidCommon/IDCache.h"
void OpenSLESStream::BQPlayerCallback(SLAndroidSimpleBufferQueueItf bq, void* context)
{
reinterpret_cast<OpenSLESStream*>(context)->PushSamples(bq);
}
void OpenSLESStream::PushSamples(SLAndroidSimpleBufferQueueItf bq)
{
ASSERT(bq == m_bq_player_buffer_queue);
// Render to the fresh buffer
m_mixer->Mix(m_buffer[m_current_buffer].data(), m_frames_per_buffer);
SLresult result = (*bq)->Enqueue(bq, m_buffer[m_current_buffer].data(), m_bytes_per_buffer);
m_current_buffer ^= 1; // Switch buffer
// Comment from sample code:
// the most likely other result is SL_RESULT_BUFFER_INSUFFICIENT,
// which for this code example would indicate a programming error
ASSERT_MSG(AUDIO, SL_RESULT_SUCCESS == result, "Couldn't enqueue audio stream.");
}
bool OpenSLESStream::Init()
{
JNIEnv* env = IDCache::GetEnvForThread();
jclass audio_utils = IDCache::GetAudioUtilsClass();
const SLuint32 sample_rate =
env->CallStaticIntMethod(audio_utils, IDCache::GetAudioUtilsGetSampleRate());
m_frames_per_buffer =
env->CallStaticIntMethod(audio_utils, IDCache::GetAudioUtilsGetFramesPerBuffer());
INFO_LOG_FMT(AUDIO, "OpenSLES configuration: {} Hz, {} frames per buffer", sample_rate,
m_frames_per_buffer);
constexpr SLuint32 channels = 2;
const SLuint32 samples_per_buffer = m_frames_per_buffer * channels;
m_bytes_per_buffer = m_frames_per_buffer * channels * sizeof(m_buffer[0][0]);
for (std::vector<short>& buffer : m_buffer)
buffer.resize(samples_per_buffer);
SLresult result;
// create engine
result = slCreateEngine(&m_engine_object, 0, nullptr, 0, nullptr, nullptr);
ASSERT(SL_RESULT_SUCCESS == result);
result = (*m_engine_object)->Realize(m_engine_object, SL_BOOLEAN_FALSE);
ASSERT(SL_RESULT_SUCCESS == result);
result = (*m_engine_object)->GetInterface(m_engine_object, SL_IID_ENGINE, &m_engine_engine);
ASSERT(SL_RESULT_SUCCESS == result);
result = (*m_engine_engine)->CreateOutputMix(m_engine_engine, &m_output_mix_object, 0, 0, 0);
ASSERT(SL_RESULT_SUCCESS == result);
result = (*m_output_mix_object)->Realize(m_output_mix_object, SL_BOOLEAN_FALSE);
ASSERT(SL_RESULT_SUCCESS == result);
SLDataLocator_AndroidSimpleBufferQueue loc_bufq = {SL_DATALOCATOR_ANDROIDSIMPLEBUFFERQUEUE, 2};
SLDataFormat_PCM format_pcm = {
SL_DATAFORMAT_PCM, channels,
sample_rate * 1000, SL_PCMSAMPLEFORMAT_FIXED_16,
SL_PCMSAMPLEFORMAT_FIXED_16, SL_SPEAKER_FRONT_LEFT | SL_SPEAKER_FRONT_RIGHT,
SL_BYTEORDER_LITTLEENDIAN};
SLDataSource audioSrc = {&loc_bufq, &format_pcm};
// configure audio sink
SLDataLocator_OutputMix loc_outmix = {SL_DATALOCATOR_OUTPUTMIX, m_output_mix_object};
SLDataSink audioSnk = {&loc_outmix, nullptr};
// create audio player
const SLInterfaceID ids[2] = {SL_IID_BUFFERQUEUE, SL_IID_VOLUME};
const SLboolean req[2] = {SL_BOOLEAN_TRUE, SL_BOOLEAN_TRUE};
result = (*m_engine_engine)
->CreateAudioPlayer(m_engine_engine, &m_bq_player_object, &audioSrc, &audioSnk, 2,
ids, req);
ASSERT(SL_RESULT_SUCCESS == result);
result = (*m_bq_player_object)->Realize(m_bq_player_object, SL_BOOLEAN_FALSE);
ASSERT(SL_RESULT_SUCCESS == result);
result = (*m_bq_player_object)->GetInterface(m_bq_player_object, SL_IID_PLAY, &m_bq_player_play);
ASSERT(SL_RESULT_SUCCESS == result);
result = (*m_bq_player_object)
->GetInterface(m_bq_player_object, SL_IID_BUFFERQUEUE, &m_bq_player_buffer_queue);
ASSERT(SL_RESULT_SUCCESS == result);
result =
(*m_bq_player_object)->GetInterface(m_bq_player_object, SL_IID_VOLUME, &m_bq_player_volume);
ASSERT(SL_RESULT_SUCCESS == result);
result = (*m_bq_player_buffer_queue)
->RegisterCallback(m_bq_player_buffer_queue, BQPlayerCallback, this);
ASSERT(SL_RESULT_SUCCESS == result);
result = (*m_bq_player_play)->SetPlayState(m_bq_player_play, SL_PLAYSTATE_PLAYING);
ASSERT(SL_RESULT_SUCCESS == result);
// Render and enqueue a first buffer.
m_current_buffer ^= 1;
result = (*m_bq_player_buffer_queue)
->Enqueue(m_bq_player_buffer_queue, m_buffer[0].data(), m_bytes_per_buffer);
if (SL_RESULT_SUCCESS != result)
return false;
return true;
}
OpenSLESStream::~OpenSLESStream()
{
if (m_bq_player_object != nullptr)
{
(*m_bq_player_object)->Destroy(m_bq_player_object);
m_bq_player_object = nullptr;
m_bq_player_play = nullptr;
m_bq_player_buffer_queue = nullptr;
m_bq_player_volume = nullptr;
}
if (m_output_mix_object != nullptr)
{
(*m_output_mix_object)->Destroy(m_output_mix_object);
m_output_mix_object = nullptr;
}
if (m_engine_object != nullptr)
{
(*m_engine_object)->Destroy(m_engine_object);
m_engine_object = nullptr;
m_engine_engine = nullptr;
}
}
bool OpenSLESStream::SetRunning(bool running)
{
SLuint32 new_state = running ? SL_PLAYSTATE_PLAYING : SL_PLAYSTATE_PAUSED;
return (*m_bq_player_play)->SetPlayState(m_bq_player_play, new_state) == SL_RESULT_SUCCESS;
}
void OpenSLESStream::SetVolume(int volume)
{
const SLmillibel attenuation =
volume <= 0 ? SL_MILLIBEL_MIN : static_cast<SLmillibel>(2000 * std::log10(volume / 100.0f));
(*m_bq_player_volume)->SetVolumeLevel(m_bq_player_volume, attenuation);
}
#endif // HAVE_OPENSL_ES
|
