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/*
* Copyright (C) 2020 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.
*/
#pragma once
#include <memory>
#include <tinyalsa/asoundlib.h>
namespace android {
namespace hardware {
namespace audio {
namespace CPP_VERSION {
namespace implementation {
namespace talsa {
constexpr unsigned int kPcmDevice = 0;
constexpr unsigned int kPcmCard = 0;
typedef struct pcm pcm_t;
struct PcmDeleter { void operator()(pcm_t *x) const; };
typedef std::unique_ptr<pcm_t, PcmDeleter> PcmPtr;
PcmPtr pcmOpen(unsigned int dev, unsigned int card, unsigned int nChannels, size_t sampleRateHz, size_t frameCount, bool isOut);
class Mixer {
public:
Mixer(unsigned card);
~Mixer();
operator bool() const { return mMixer != nullptr; }
Mixer(const Mixer &) = delete;
Mixer &operator=(const Mixer &) = delete;
Mixer(Mixer &&) = delete;
Mixer &operator=(Mixer &&) = delete;
private:
struct mixer *mMixer;
};
} // namespace talsa
} // namespace implementation
} // namespace CPP_VERSION
} // namespace audio
} // namespace hardware
} // namespace android
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