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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "media/audio/reconfigurable_audio_bus_pool.h"
#include <memory>
#include "base/check_op.h"
#include "base/functional/bind.h"
#include "base/functional/callback.h"
#include "base/synchronization/lock.h"
#include "base/task/bind_post_task.h"
#include "media/base/audio_bus.h"
#include "media/base/audio_bus_pool.h"
#include "media/base/audio_parameters.h"
#include "media/base/reentrancy_checker.h"
namespace media {
ReconfigurableAudioBusPoolImpl::ReconfigurableAudioBusPoolImpl(
base::TimeDelta preallocated_audio_bus_pool_duration)
: preallocated_audio_bus_pool_duration_(
preallocated_audio_bus_pool_duration) {}
ReconfigurableAudioBusPoolImpl::~ReconfigurableAudioBusPoolImpl() = default;
std::unique_ptr<AudioBus> ReconfigurableAudioBusPoolImpl::GetAudioBus() {
CHECK(audio_bus_pool_);
NON_REENTRANT_SCOPE(reentrancy_checker_);
return audio_bus_pool_->GetAudioBus();
}
void ReconfigurableAudioBusPoolImpl::InsertAudioBus(
std::unique_ptr<AudioBus> audio_bus) {
CHECK(audio_bus_pool_);
if (audio_bus->channels() != audio_parameters_.channels() ||
audio_bus->frames() != audio_parameters_.frames_per_buffer()) {
// Drop an in-flight audio bus if the pool has been reconfigured.
return;
}
audio_bus_pool_->InsertAudioBus(std::move(audio_bus));
}
void ReconfigurableAudioBusPoolImpl::Reconfigure(
const AudioParameters& audio_parameters) {
NON_REENTRANT_SCOPE(reentrancy_checker_);
if (!audio_bus_pool_ || !audio_parameters.Equals(audio_parameters_)) {
audio_parameters_ = audio_parameters;
int number_of_audio_buses = preallocated_audio_bus_pool_duration_ /
audio_parameters.GetBufferDuration();
audio_bus_pool_ = std::make_unique<AudioBusPoolImpl>(
audio_parameters, number_of_audio_buses, number_of_audio_buses);
}
}
} // namespace media
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