91 lines
3.7 KiB
C++
91 lines
3.7 KiB
C++
/*
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* Copyright (C) 2023 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <functional>
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#include <iostream>
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#include <memory>
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#include <optional>
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#include <vector>
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#include <aidl/android/media/audio/common/AudioChannelLayout.h>
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#include <aidl/android/media/audio/common/AudioFormatDescription.h>
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#include <aidl/android/media/audio/common/AudioPort.h>
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#include "core-impl/Stream.h"
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extern "C" {
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#include <tinyalsa/pcm.h>
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#include "alsa_device_profile.h"
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#include "alsa_device_proxy.h"
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}
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namespace aidl::android::hardware::audio::core::alsa {
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struct DeviceProfile {
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int card;
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int device;
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int direction; /* PCM_OUT or PCM_IN */
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bool isExternal;
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};
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std::ostream& operator<<(std::ostream& os, const DeviceProfile& device);
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class DeviceProxy {
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public:
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DeviceProxy(); // Constructs a "null" proxy.
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explicit DeviceProxy(const DeviceProfile& deviceProfile);
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alsa_device_profile* getProfile() const { return mProfile.get(); }
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alsa_device_proxy* get() const { return mProxy.get(); }
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private:
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static void alsaProxyDeleter(alsa_device_proxy* proxy);
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using AlsaProxy = std::unique_ptr<alsa_device_proxy, decltype(alsaProxyDeleter)*>;
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std::unique_ptr<alsa_device_profile> mProfile;
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AlsaProxy mProxy;
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};
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void applyGain(void* buffer, float gain, size_t bytesToTransfer, enum pcm_format pcmFormat,
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int channelCount);
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::aidl::android::media::audio::common::AudioChannelLayout getChannelLayoutMaskFromChannelCount(
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unsigned int channelCount, int isInput);
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::aidl::android::media::audio::common::AudioChannelLayout getChannelIndexMaskFromChannelCount(
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unsigned int channelCount);
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unsigned int getChannelCountFromChannelMask(
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const ::aidl::android::media::audio::common::AudioChannelLayout& channelMask, bool isInput);
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std::vector<::aidl::android::media::audio::common::AudioChannelLayout> getChannelMasksFromProfile(
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const alsa_device_profile* profile);
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std::optional<DeviceProfile> getDeviceProfile(
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const ::aidl::android::media::audio::common::AudioDevice& audioDevice, bool isInput);
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std::optional<DeviceProfile> getDeviceProfile(
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const ::aidl::android::media::audio::common::AudioPort& audioPort);
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std::optional<struct pcm_config> getPcmConfig(const StreamContext& context, bool isInput);
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std::vector<int> getSampleRatesFromProfile(const alsa_device_profile* profile);
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DeviceProxy openProxyForAttachedDevice(const DeviceProfile& deviceProfile,
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struct pcm_config* pcmConfig, size_t bufferFrameCount);
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DeviceProxy openProxyForExternalDevice(const DeviceProfile& deviceProfile,
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struct pcm_config* pcmConfig, bool requireExactMatch);
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DeviceProxy readAlsaDeviceInfo(const DeviceProfile& deviceProfile);
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void resetTransferredFrames(DeviceProxy& proxy, uint64_t frames);
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::aidl::android::media::audio::common::AudioFormatDescription
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c2aidl_pcm_format_AudioFormatDescription(enum pcm_format legacy);
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pcm_format aidl2c_AudioFormatDescription_pcm_format(
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const ::aidl::android::media::audio::common::AudioFormatDescription& aidl);
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} // namespace aidl::android::hardware::audio::core::alsa
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