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audio_manager.cc
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audio_manager.cc
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// Copyright 2015 Google Inc. All Rights Reserved.
//
// 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 "alsa_player.h"
#include "audio_manager.h"
#include "eci-c++.h"
#include <iostream>
AudioManager::AudioManager(std::unique_ptr<AlsaPlayer> player)
: player_(std::move(player)) {}
void AudioManager::Push(std::unique_ptr<AudioTask> task) {
if (queue_.empty()) {
task->StartTask(player_.get());
}
queue_.push(std::move(task));
}
void AudioManager::Run() {
if (queue_.empty()) return;
AlsaPlayer* player = player_.get();
AudioTask* task = queue_.front().get();
if (task->Run(player) == AudioTask::CONTINUE) {
return;
}
task->EndTask(player, true);
queue_.pop();
if (queue_.empty()) {
player->Idle();
} else {
AudioTask* next_task = queue_.front().get();
next_task->StartTask(player);
}
}
void AudioManager::Clear() {
if (queue_.empty()) return;
AlsaPlayer* player = player_.get();
AudioTask* task = queue_.front().get();
task->EndTask(player, false);
decltype(queue_) empty;
std::swap(queue_, empty);
}
std::vector<pollfd> AudioManager::GetPollDescriptors() const {
if (!queue_.empty()) {
return queue_.front()->GetPollDescriptors(player_.get());
} else {
return {};
}
}
int AudioManager::GetPollEvents(pollfd* fds, int nfds) const {
if (!queue_.empty()) {
return queue_.front()->GetPollEvents(player_.get(), fds, nfds);
} else {
return 0;
}
}