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
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
|
/*
* Copyright 2019 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <android/log.h>
// parselib includes
#include <stream/MemInputStream.h>
#include <wav/WavStreamReader.h>
// local includes
#include "OneShotSampleSource.h"
#include "SimpleMultiPlayer.h"
static const char* TAG = "SimpleMultiPlayer";
using namespace oboe;
using namespace parselib;
namespace iolib {
constexpr int32_t kBufferSizeInBursts = 2; // Use 2 bursts as the buffer size (double buffer)
SimpleMultiPlayer::SimpleMultiPlayer()
: mChannelCount(0), mOutputReset(false)
{}
DataCallbackResult SimpleMultiPlayer::onAudioReady(AudioStream *oboeStream, void *audioData,
int32_t numFrames) {
StreamState streamState = oboeStream->getState();
if (streamState != StreamState::Open && streamState != StreamState::Started) {
__android_log_print(ANDROID_LOG_ERROR, TAG, " streamState:%d", streamState);
}
if (streamState == StreamState::Disconnected) {
__android_log_print(ANDROID_LOG_ERROR, TAG, " streamState::Disconnected");
}
memset(audioData, 0, static_cast<size_t>(numFrames) * static_cast<size_t>(mChannelCount)
* sizeof(float));
// OneShotSampleSource* sources = mSampleSources.get();
for(int32_t index = 0; index < mNumSampleBuffers; index++) {
if (mSampleSources[index]->isPlaying()) {
mSampleSources[index]->mixAudio((float*)audioData, mChannelCount, numFrames);
}
}
return DataCallbackResult::Continue;
}
void SimpleMultiPlayer::onErrorAfterClose(AudioStream *oboeStream, Result error) {
__android_log_print(ANDROID_LOG_INFO, TAG, "==== onErrorAfterClose() error:%d", error);
resetAll();
if (openStream() && startStream()) {
mOutputReset = true;
}
}
void SimpleMultiPlayer::onErrorBeforeClose(AudioStream *, Result error) {
__android_log_print(ANDROID_LOG_INFO, TAG, "==== onErrorBeforeClose() error:%d", error);
}
bool SimpleMultiPlayer::openStream() {
__android_log_print(ANDROID_LOG_INFO, TAG, "openStream()");
// Create an audio stream
AudioStreamBuilder builder;
builder.setChannelCount(mChannelCount);
// we will resample source data to device rate, so take default sample rate
builder.setCallback(this);
builder.setPerformanceMode(PerformanceMode::LowLatency);
builder.setSharingMode(SharingMode::Exclusive);
builder.setSampleRateConversionQuality(SampleRateConversionQuality::Medium);
Result result = builder.openStream(mAudioStream);
if (result != Result::OK){
__android_log_print(
ANDROID_LOG_ERROR,
TAG,
"openStream failed. Error: %s", convertToText(result));
return false;
}
// Reduce stream latency by setting the buffer size to a multiple of the burst size
// Note: this will fail with ErrorUnimplemented if we are using a callback with OpenSL ES
// See oboe::AudioStreamBuffered::setBufferSizeInFrames
result = mAudioStream->setBufferSizeInFrames(
mAudioStream->getFramesPerBurst() * kBufferSizeInBursts);
if (result != Result::OK) {
__android_log_print(
ANDROID_LOG_WARN,
TAG,
"setBufferSizeInFrames failed. Error: %s", convertToText(result));
}
mSampleRate = mAudioStream->getSampleRate();
return true;
}
bool SimpleMultiPlayer::startStream() {
Result result = mAudioStream->requestStart();
if (result != Result::OK){
__android_log_print(
ANDROID_LOG_ERROR,
TAG,
"requestStart failed. Error: %s", convertToText(result));
return false;
}
return true;
}
void SimpleMultiPlayer::setupAudioStream(int32_t channelCount) {
__android_log_print(ANDROID_LOG_INFO, TAG, "setupAudioStream()");
mChannelCount = channelCount;
openStream();
}
void SimpleMultiPlayer::teardownAudioStream() {
__android_log_print(ANDROID_LOG_INFO, TAG, "teardownAudioStream()");
// tear down the player
if (mAudioStream) {
mAudioStream->stop();
mAudioStream->close();
mAudioStream.reset();
}
}
void SimpleMultiPlayer::addSampleSource(SampleSource* source, SampleBuffer* buffer) {
buffer->resampleData(mSampleRate);
mSampleBuffers.push_back(buffer);
mSampleSources.push_back(source);
mNumSampleBuffers++;
}
void SimpleMultiPlayer::unloadSampleData() {
__android_log_print(ANDROID_LOG_INFO, TAG, "unloadSampleData()");
resetAll();
for (int32_t bufferIndex = 0; bufferIndex < mNumSampleBuffers; bufferIndex++) {
delete mSampleBuffers[bufferIndex];
delete mSampleSources[bufferIndex];
}
mSampleBuffers.clear();
mSampleSources.clear();
mNumSampleBuffers = 0;
}
void SimpleMultiPlayer::triggerDown(int32_t index) {
if (index < mNumSampleBuffers) {
mSampleSources[index]->setPlayMode();
}
}
void SimpleMultiPlayer::triggerUp(int32_t index) {
if (index < mNumSampleBuffers) {
mSampleSources[index]->setStopMode();
}
}
void SimpleMultiPlayer::resetAll() {
for (int32_t bufferIndex = 0; bufferIndex < mNumSampleBuffers; bufferIndex++) {
mSampleSources[bufferIndex]->setStopMode();
}
}
void SimpleMultiPlayer::setPan(int index, float pan) {
mSampleSources[index]->setPan(pan);
}
float SimpleMultiPlayer::getPan(int index) {
return mSampleSources[index]->getPan();
}
void SimpleMultiPlayer::setGain(int index, float gain) {
mSampleSources[index]->setGain(gain);
}
float SimpleMultiPlayer::getGain(int index) {
return mSampleSources[index]->getGain();
}
}
|
