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Commit 4d9b1799 authored by Mikhail Naganov's avatar Mikhail Naganov Committed by Automerger Merge Worker
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audio HAL: Minimal example implementation am: df5adfde am: 88a81f47 am: 09c9ec41 

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2190587



Change-Id: I4e74269852811ef277f49de4d8f7a3fba3d8432f
Signed-off-by: default avatarAutomerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
parents 23890bc3 09c9ec41

audio/aidl/default/Android.bp

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package {

    // See: http://go/android-license-faq

    // A large-scale-change added 'default_applicable_licenses' to import

    // all of the 'license_kinds' from "hardware_interfaces_license"

    // to get the below license kinds:

    //   SPDX-license-identifier-Apache-2.0

    default_applicable_licenses: ["hardware_interfaces_license"],

}



cc_library_static {

    name: "libaudioserviceexampleimpl",

    vendor: true,

    shared_libs: [

        "libbase",

        "libbinder_ndk",

        "android.hardware.audio.core-V1-ndk",

    ],

    export_include_dirs: ["include"],

    srcs: [

        "Config.cpp",

        "Configuration.cpp",

        "Module.cpp",

        "Stream.cpp",

    ],

    visibility: [

        ":__subpackages__",

    ],

}



cc_binary {

    name: "android.hardware.audio.service-aidl.example",

    relative_install_path: "hw",

    init_rc: ["android.hardware.audio.service-aidl.example.rc"],

    vintf_fragments: ["android.hardware.audio.service-aidl.xml"],

    vendor: true,

    shared_libs: [

        "libbase",

        "libbinder_ndk",

        "android.hardware.audio.core-V1-ndk",

    ],

    static_libs: [

        "libaudioserviceexampleimpl",

    ],

    srcs: ["main.cpp"],

}

audio/aidl/default/Config.cpp

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/*

 * Copyright (C) 2022 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 "core-impl/Config.h"



namespace aidl::android::hardware::audio::core {}  // namespace aidl::android::hardware::audio::core

audio/aidl/default/Configuration.cpp

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/*

 * Copyright (C) 2022 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 <aidl/android/media/audio/common/AudioChannelLayout.h>

#include <aidl/android/media/audio/common/AudioDeviceType.h>

#include <aidl/android/media/audio/common/AudioFormatType.h>

#include <aidl/android/media/audio/common/AudioIoFlags.h>

#include <aidl/android/media/audio/common/AudioOutputFlags.h>



#include "aidl/android/media/audio/common/AudioFormatDescription.h"

#include "core-impl/Configuration.h"



using aidl::android::media::audio::common::AudioChannelLayout;

using aidl::android::media::audio::common::AudioDeviceType;

using aidl::android::media::audio::common::AudioFormatDescription;

using aidl::android::media::audio::common::AudioFormatType;

using aidl::android::media::audio::common::AudioGainConfig;

using aidl::android::media::audio::common::AudioIoFlags;

using aidl::android::media::audio::common::AudioOutputFlags;

using aidl::android::media::audio::common::AudioPort;

using aidl::android::media::audio::common::AudioPortConfig;

using aidl::android::media::audio::common::AudioPortDeviceExt;

using aidl::android::media::audio::common::AudioPortExt;

using aidl::android::media::audio::common::AudioPortMixExt;

using aidl::android::media::audio::common::AudioProfile;

using aidl::android::media::audio::common::Int;

using aidl::android::media::audio::common::PcmType;



namespace aidl::android::hardware::audio::core::internal {



static AudioProfile createProfile(PcmType pcmType, const std::vector<int32_t>& channelLayouts,

                                  const std::vector<int32_t>& sampleRates) {

    AudioProfile profile;

    profile.format.type = AudioFormatType::PCM;

    profile.format.pcm = pcmType;

    for (auto layout : channelLayouts) {

        profile.channelMasks.push_back(

                AudioChannelLayout::make<AudioChannelLayout::layoutMask>(layout));

    }

    profile.sampleRates.insert(profile.sampleRates.end(), sampleRates.begin(), sampleRates.end());

    return profile;

}



static AudioPortExt createDeviceExt(AudioDeviceType devType, int32_t flags) {

    AudioPortDeviceExt deviceExt;

    deviceExt.device.type.type = devType;

    deviceExt.flags = flags;

    return AudioPortExt::make<AudioPortExt::Tag::device>(deviceExt);

}



static AudioPortExt createPortMixExt(int32_t maxOpenStreamCount, int32_t maxActiveStreamCount) {

    AudioPortMixExt mixExt;

    mixExt.maxOpenStreamCount = maxOpenStreamCount;

    mixExt.maxActiveStreamCount = maxActiveStreamCount;

    return AudioPortExt::make<AudioPortExt::Tag::mix>(mixExt);

}



static AudioPort createPort(int32_t id, const std::string& name, int32_t flags, bool isInput,

                            const AudioPortExt& ext) {

    AudioPort port;

    port.id = id;

    port.name = name;

    port.flags = isInput ? AudioIoFlags::make<AudioIoFlags::Tag::input>(flags)

                         : AudioIoFlags::make<AudioIoFlags::Tag::output>(flags);

    port.ext = ext;

    return port;

}



static AudioPortConfig createPortConfig(int32_t id, int32_t portId, PcmType pcmType, int32_t layout,

                                        int32_t sampleRate, int32_t flags, bool isInput,

                                        const AudioPortExt& ext) {

    AudioPortConfig config;

    config.id = id;

    config.portId = portId;

    config.sampleRate = Int{.value = sampleRate};

    config.channelMask = AudioChannelLayout::make<AudioChannelLayout::layoutMask>(layout);

    config.format = AudioFormatDescription{.type = AudioFormatType::PCM, .pcm = pcmType};

    config.gain = AudioGainConfig();

    config.flags = isInput ? AudioIoFlags::make<AudioIoFlags::Tag::input>(flags)

                           : AudioIoFlags::make<AudioIoFlags::Tag::output>(flags);

    config.ext = ext;

    return config;

}



static AudioRoute createRoute(const std::vector<int32_t>& sources, int32_t sink) {

    AudioRoute route;

    route.sinkPortId = sink;

    route.sourcePortIds.insert(route.sourcePortIds.end(), sources.begin(), sources.end());

    return route;

}



Configuration& getNullPrimaryConfiguration() {

    static Configuration configuration = []() {

        Configuration c;



        AudioPort nullOutDevice =

                createPort(c.nextPortId++, "Null", 0, false,

                           createDeviceExt(AudioDeviceType::OUT_SPEAKER,

                                           1 << AudioPortDeviceExt::FLAG_INDEX_DEFAULT_DEVICE));

        c.ports.push_back(nullOutDevice);



        AudioPort primaryOutMix = createPort(c.nextPortId++, "primary output",

                                             1 << static_cast<int32_t>(AudioOutputFlags::PRIMARY),

                                             false, createPortMixExt(1, 1));

        primaryOutMix.profiles.push_back(

                createProfile(PcmType::INT_16_BIT,

                              {AudioChannelLayout::LAYOUT_MONO, AudioChannelLayout::LAYOUT_STEREO},

                              {44100, 48000}));

        primaryOutMix.profiles.push_back(

                createProfile(PcmType::INT_24_BIT,

                              {AudioChannelLayout::LAYOUT_MONO, AudioChannelLayout::LAYOUT_STEREO},

                              {44100, 48000}));

        c.ports.push_back(primaryOutMix);



        c.routes.push_back(createRoute({primaryOutMix.id}, nullOutDevice.id));



        c.initialConfigs.push_back(

                createPortConfig(nullOutDevice.id, nullOutDevice.id, PcmType::INT_24_BIT,

                                 AudioChannelLayout::LAYOUT_STEREO, 48000, 0, false,

                                 createDeviceExt(AudioDeviceType::OUT_SPEAKER, 0)));



        AudioPort loopOutDevice = createPort(c.nextPortId++, "Loopback Out", 0, false,

                                             createDeviceExt(AudioDeviceType::OUT_SUBMIX, 0));

        loopOutDevice.profiles.push_back(

                createProfile(PcmType::INT_24_BIT, {AudioChannelLayout::LAYOUT_STEREO}, {48000}));

        c.ports.push_back(loopOutDevice);



        AudioPort loopOutMix =

                createPort(c.nextPortId++, "loopback output", 0, false, createPortMixExt(0, 0));

        loopOutMix.profiles.push_back(

                createProfile(PcmType::INT_24_BIT, {AudioChannelLayout::LAYOUT_STEREO}, {48000}));

        c.ports.push_back(loopOutMix);



        c.routes.push_back(createRoute({loopOutMix.id}, loopOutDevice.id));



        AudioPort zeroInDevice =

                createPort(c.nextPortId++, "Zero", 0, true,

                           createDeviceExt(AudioDeviceType::IN_MICROPHONE,

                                           1 << AudioPortDeviceExt::FLAG_INDEX_DEFAULT_DEVICE));

        c.ports.push_back(zeroInDevice);



        AudioPort primaryInMix =

                createPort(c.nextPortId++, "primary input", 0, true, createPortMixExt(2, 2));

        primaryInMix.profiles.push_back(

                createProfile(PcmType::INT_16_BIT,

                              {AudioChannelLayout::LAYOUT_MONO, AudioChannelLayout::LAYOUT_STEREO,

                               AudioChannelLayout::LAYOUT_FRONT_BACK},

                              {8000, 11025, 12000, 16000, 22050, 24000, 32000, 44100, 48000}));

        primaryInMix.profiles.push_back(

                createProfile(PcmType::INT_24_BIT,

                              {AudioChannelLayout::LAYOUT_MONO, AudioChannelLayout::LAYOUT_STEREO,

                               AudioChannelLayout::LAYOUT_FRONT_BACK},

                              {8000, 11025, 12000, 16000, 22050, 24000, 32000, 44100, 48000}));

        c.ports.push_back(primaryInMix);



        c.routes.push_back(createRoute({zeroInDevice.id}, primaryInMix.id));



        c.initialConfigs.push_back(

                createPortConfig(zeroInDevice.id, zeroInDevice.id, PcmType::INT_24_BIT,

                                 AudioChannelLayout::LAYOUT_MONO, 48000, 0, true,

                                 createDeviceExt(AudioDeviceType::IN_MICROPHONE, 0)));



        AudioPort loopInDevice = createPort(c.nextPortId++, "Loopback In", 0, true,

                                            createDeviceExt(AudioDeviceType::IN_SUBMIX, 0));

        loopInDevice.profiles.push_back(

                createProfile(PcmType::INT_24_BIT, {AudioChannelLayout::LAYOUT_STEREO}, {48000}));

        c.ports.push_back(loopInDevice);



        AudioPort loopInMix =

                createPort(c.nextPortId++, "loopback input", 0, true, createPortMixExt(0, 0));

        loopInMix.profiles.push_back(

                createProfile(PcmType::INT_24_BIT, {AudioChannelLayout::LAYOUT_STEREO}, {48000}));

        c.ports.push_back(loopInMix);



        c.routes.push_back(createRoute({loopInDevice.id}, loopInMix.id));



        c.portConfigs.insert(c.portConfigs.end(), c.initialConfigs.begin(), c.initialConfigs.end());

        return c;

    }();

    return configuration;

}



}  // namespace aidl::android::hardware::audio::core::internal