diff options
Diffstat (limited to 'externals/oboe/samples/SoundBoard/src/main/cpp/SoundBoardEngine.cpp')
| -rw-r--r-- | externals/oboe/samples/SoundBoard/src/main/cpp/SoundBoardEngine.cpp | 130 |
1 files changed, 0 insertions, 130 deletions
diff --git a/externals/oboe/samples/SoundBoard/src/main/cpp/SoundBoardEngine.cpp b/externals/oboe/samples/SoundBoard/src/main/cpp/SoundBoardEngine.cpp deleted file mode 100644 index defb6dcb42..0000000000 --- a/externals/oboe/samples/SoundBoard/src/main/cpp/SoundBoardEngine.cpp +++ /dev/null @@ -1,130 +0,0 @@ -/* - * Copyright 2018 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 <memory> -#include "SoundBoardEngine.h" - -/** - * Main audio engine for the SoundBoard sample. It is responsible for: - * - * - Creating the callback object which will be supplied when constructing the audio stream - * - Creating the playback stream, including setting the callback object - * - Creating `Synth` which will render the audio inside the callback - * - Starting the playback stream - * - Restarting the playback stream when `restart()` is called by the callback object - * - * @param numSignals - */ -SoundBoardEngine::SoundBoardEngine(int32_t numSignals) { - createCallback(numSignals); -} - -SoundBoardEngine::~SoundBoardEngine() { - if (mStream) { - LOGE("SoundBoardEngine destructor was called without calling stop()." - "Please call stop() to ensure stream resources are not leaked."); - stop(); - } -} - -void SoundBoardEngine::noteOff(int32_t noteIndex) { - mSynth->noteOff(noteIndex); -} - -void SoundBoardEngine::noteOn(int32_t noteIndex) { - mSynth->noteOn(noteIndex); -} - -void SoundBoardEngine::tap(bool isDown) { - mSynth->tap(isDown); -} - -void SoundBoardEngine::restart() { - stop(); - start(); -} -// Create the playback stream -oboe::Result SoundBoardEngine::createPlaybackStream() { - oboe::AudioStreamBuilder builder; - return builder.setSharingMode(oboe::SharingMode::Exclusive) - ->setPerformanceMode(oboe::PerformanceMode::LowLatency) - ->setFormat(oboe::AudioFormat::Float) - ->setDataCallback(mDataCallback) - ->setErrorCallback(mErrorCallback) - ->openStream(mStream); -} - -// Create the callback and set its thread affinity to the supplied CPU core IDs -void SoundBoardEngine::createCallback(int32_t numSignals){ - - mDataCallback = std::make_shared<DefaultDataCallback>(); - - // Create the error callback, we supply ourselves as the parent so that we can restart the stream - // when it's disconnected - mErrorCallback = std::make_shared<DefaultErrorCallback>(*this); - - mNumSignals = numSignals; -} - -bool SoundBoardEngine::start() { - // It is possible for a stream's device to become disconnected during stream open or between - // stream open and stream start. - // If the stream fails to start, close the old stream and try again. - bool didStart = false; - int tryCount = 0; - do { - if (tryCount > 0) { - usleep(20 * 1000); // Sleep between tries to give the system time to settle. - } - didStart = attemptStart(); - } while (!didStart && tryCount++ < 3); - if (!didStart) { - LOGE("Failed at starting the stream"); - } - return didStart; -} - -bool SoundBoardEngine::attemptStart() { - auto result = createPlaybackStream(); - - if (result == Result::OK) { - // Create our synthesizer audio source using the properties of the stream - mSynth = Synth::create(mStream->getSampleRate(), mStream->getChannelCount(), mNumSignals); - mDataCallback->reset(); - mDataCallback->setSource(std::dynamic_pointer_cast<IRenderableAudio>(mSynth)); - result = mStream->start(); - if (result == Result::OK) { - return true; - } else { - LOGW("Failed attempt at starting the playback stream. Error: %s", convertToText(result)); - return false; - } - } else { - LOGW("Failed attempt at creating the playback stream. Error: %s", convertToText(result)); - return false; - } -} - -bool SoundBoardEngine::stop() { - if(mStream && mStream->getState() != oboe::StreamState::Closed) { - mStream->stop(); - mStream->close(); - } - mStream.reset(); - return true; -} - |
