media/libaudiohal/impl/DeviceHalHidl.cpp

/*
 * Copyright (C) 2016 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 <stdio.h>

#define LOG_TAG "DeviceHalHidl"
//#define LOG_NDEBUG 0

#include <cutils/native_handle.h>
#include <cutils/properties.h>
#include <hwbinder/IPCThreadState.h>
#include <media/AudioContainers.h>
#include <utils/Log.h>

#include PATH(android/hardware/audio/FILE_VERSION/IPrimaryDevice.h)
#include <HidlUtils.h>
#include <common/all-versions/VersionUtils.h>
#include <util/CoreUtils.h>

#include "DeviceHalHidl.h"
#include "EffectHalHidl.h"
#include "ParameterUtils.h"
#include "StreamHalHidl.h"

using ::android::hardware::audio::common::CPP_VERSION::implementation::HidlUtils;
using ::android::hardware::audio::common::utils::EnumBitfield;
using ::android::hardware::audio::CPP_VERSION::implementation::CoreUtils;
using ::android::hardware::hidl_string;
using ::android::hardware::hidl_vec;

namespace android {
namespace CPP_VERSION {

using namespace ::android::hardware::audio::common::CPP_VERSION;
using namespace ::android::hardware::audio::CPP_VERSION;

using EffectHalHidl = ::android::effect::CPP_VERSION::EffectHalHidl;

DeviceHalHidl::DeviceHalHidl(const sp<IDevice>& device)
        : ConversionHelperHidl("Device"), mDevice(device),
          mPrimaryDevice(IPrimaryDevice::castFrom(device)) {
}

DeviceHalHidl::~DeviceHalHidl() {
    if (mDevice != 0) {
#if MAJOR_VERSION <= 5
        mDevice.clear();
        hardware::IPCThreadState::self()->flushCommands();
#elif MAJOR_VERSION >= 6
        mDevice->close();
#endif
    }
}

status_t DeviceHalHidl::getSupportedDevices(uint32_t*) {
    // Obsolete.
    return INVALID_OPERATION;
}

status_t DeviceHalHidl::initCheck() {
    if (mDevice == 0) return NO_INIT;
    return processReturn("initCheck", mDevice->initCheck());
}

status_t DeviceHalHidl::setVoiceVolume(float volume) {
    if (mDevice == 0) return NO_INIT;
    if (mPrimaryDevice == 0) return INVALID_OPERATION;
    return processReturn("setVoiceVolume", mPrimaryDevice->setVoiceVolume(volume));
}

status_t DeviceHalHidl::setMasterVolume(float volume) {
    if (mDevice == 0) return NO_INIT;
    return processReturn("setMasterVolume", mDevice->setMasterVolume(volume));
}

status_t DeviceHalHidl::getMasterVolume(float *volume) {
    if (mDevice == 0) return NO_INIT;
    Result retval;
    Return<void> ret = mDevice->getMasterVolume(
            [&](Result r, float v) {
                retval = r;
                if (retval == Result::OK) {
                    *volume = v;
                }
            });
    return processReturn("getMasterVolume", ret, retval);
}

status_t DeviceHalHidl::setMode(audio_mode_t mode) {
    if (mDevice == 0) return NO_INIT;
    if (mPrimaryDevice == 0) return INVALID_OPERATION;
    return processReturn("setMode", mPrimaryDevice->setMode(AudioMode(mode)));
}

status_t DeviceHalHidl::setMicMute(bool state) {
    if (mDevice == 0) return NO_INIT;
    return processReturn("setMicMute", mDevice->setMicMute(state));
}

status_t DeviceHalHidl::getMicMute(bool *state) {
    if (mDevice == 0) return NO_INIT;
    Result retval;
    Return<void> ret = mDevice->getMicMute(
            [&](Result r, bool mute) {
                retval = r;
                if (retval == Result::OK) {
                    *state = mute;
                }
            });
    return processReturn("getMicMute", ret, retval);
}

status_t DeviceHalHidl::setMasterMute(bool state) {
    if (mDevice == 0) return NO_INIT;
    return processReturn("setMasterMute", mDevice->setMasterMute(state));
}

status_t DeviceHalHidl::getMasterMute(bool *state) {
    if (mDevice == 0) return NO_INIT;
    Result retval;
    Return<void> ret = mDevice->getMasterMute(
            [&](Result r, bool mute) {
                retval = r;
                if (retval == Result::OK) {
                    *state = mute;
                }
            });
    return processReturn("getMasterMute", ret, retval);
}

status_t DeviceHalHidl::setParameters(const String8& kvPairs) {
    if (mDevice == 0) return NO_INIT;
    hidl_vec<ParameterValue> hidlParams;
    status_t status = parametersFromHal(kvPairs, &hidlParams);
    if (status != OK) return status;
    // TODO: change the API so that context and kvPairs are separated
    return processReturn("setParameters",
                         utils::setParameters(mDevice, {} /* context */, hidlParams));
}

status_t DeviceHalHidl::getParameters(const String8& keys, String8 *values) {
    values->clear();
    if (mDevice == 0) return NO_INIT;
    hidl_vec<hidl_string> hidlKeys;
    status_t status = keysFromHal(keys, &hidlKeys);
    if (status != OK) return status;
    Result retval;
    Return<void> ret = utils::getParameters(mDevice,
            {} /* context */,
            hidlKeys,
            [&](Result r, const hidl_vec<ParameterValue>& parameters) {
                retval = r;
                if (retval == Result::OK) {
                    parametersToHal(parameters, values);
                }
            });
    return processReturn("getParameters", ret, retval);
}

status_t DeviceHalHidl::getInputBufferSize(
        const struct audio_config *config, size_t *size) {
    if (mDevice == 0) return NO_INIT;
    AudioConfig hidlConfig;
    HidlUtils::audioConfigFromHal(*config, true /*isInput*/, &hidlConfig);
    Result retval;
    Return<void> ret = mDevice->getInputBufferSize(
            hidlConfig,
            [&](Result r, uint64_t bufferSize) {
                retval = r;
                if (retval == Result::OK) {
                    *size = static_cast<size_t>(bufferSize);
                }
            });
    return processReturn("getInputBufferSize", ret, retval);
}

status_t DeviceHalHidl::openOutputStream(
        audio_io_handle_t handle,
        audio_devices_t deviceType,
        audio_output_flags_t flags,
        struct audio_config *config,
        const char *address,
        sp<StreamOutHalInterface> *outStream) {
    if (mDevice == 0) return NO_INIT;
    DeviceAddress hidlDevice;
    if (status_t status = CoreUtils::deviceAddressFromHal(deviceType, address, &hidlDevice);
            status != OK) {
        return status;
    }
    AudioConfig hidlConfig;
    if (status_t status = HidlUtils::audioConfigFromHal(*config, false /*isInput*/, &hidlConfig);
            status != OK) {
        return status;
    }
    CoreUtils::AudioOutputFlags hidlFlags;
    if (status_t status = CoreUtils::audioOutputFlagsFromHal(flags, &hidlFlags); status != OK) {
        return status;
    }
    Result retval = Result::NOT_INITIALIZED;
    Return<void> ret = mDevice->openOutputStream(
            handle, hidlDevice, hidlConfig, hidlFlags,
#if MAJOR_VERSION >= 4
            {} /* metadata */,
#endif
            [&](Result r, const sp<IStreamOut>& result, const AudioConfig& suggestedConfig) {
                retval = r;
                if (retval == Result::OK) {
                    *outStream = new StreamOutHalHidl(result);
                }
                HidlUtils::audioConfigToHal(suggestedConfig, config);
            });
    return processReturn("openOutputStream", ret, retval);
}

status_t DeviceHalHidl::openInputStream(
        audio_io_handle_t handle,
        audio_devices_t devices,
        struct audio_config *config,
        audio_input_flags_t flags,
        const char *address,
        audio_source_t source,
        audio_devices_t outputDevice,
        const char *outputDeviceAddress,
        sp<StreamInHalInterface> *inStream) {
    if (mDevice == 0) return NO_INIT;
    DeviceAddress hidlDevice;
    if (status_t status = CoreUtils::deviceAddressFromHal(devices, address, &hidlDevice);
            status != OK) {
        return status;
    }
    AudioConfig hidlConfig;
    if (status_t status = HidlUtils::audioConfigFromHal(*config, true /*isInput*/, &hidlConfig);
            status != OK) {
        return status;
    }
    CoreUtils::AudioInputFlags hidlFlags;
#if MAJOR_VERSION <= 5
    // Some flags were specific to framework and must not leak to the HAL.
    flags = static_cast<audio_input_flags_t>(flags & ~AUDIO_INPUT_FLAG_DIRECT);
#endif
    if (status_t status = CoreUtils::audioInputFlagsFromHal(flags, &hidlFlags); status != OK) {
        return status;
    }
    Result retval = Result::NOT_INITIALIZED;
#if MAJOR_VERSION == 2
    auto sinkMetadata = AudioSource(source);
#elif MAJOR_VERSION >= 4
    // TODO: correctly propagate the tracks sources and volume
    //       for now, only send the main source at 1dbfs
    AudioSource hidlSource;
    if (status_t status = HidlUtils::audioSourceFromHal(source, &hidlSource); status != OK) {
        return status;
    }
    SinkMetadata sinkMetadata = {{{ .source = std::move(hidlSource), .gain = 1 }}};
#endif
#if MAJOR_VERSION < 5
    (void)outputDevice;
    (void)outputDeviceAddress;
#else
#if MAJOR_VERSION >= 7
    (void)HidlUtils::audioChannelMaskFromHal(
            AUDIO_CHANNEL_NONE, true /*isInput*/, &sinkMetadata.tracks[0].channelMask);
#endif
    if (outputDevice != AUDIO_DEVICE_NONE) {
        DeviceAddress hidlOutputDevice;
        if (status_t status = CoreUtils::deviceAddressFromHal(
                        outputDevice, outputDeviceAddress, &hidlOutputDevice); status != OK) {
            return status;
        }
        sinkMetadata.tracks[0].destination.device(std::move(hidlOutputDevice));
    }
#endif
    Return<void> ret = mDevice->openInputStream(
            handle, hidlDevice, hidlConfig, hidlFlags, sinkMetadata,
            [&](Result r, const sp<IStreamIn>& result, const AudioConfig& suggestedConfig) {
                retval = r;
                if (retval == Result::OK) {
                    *inStream = new StreamInHalHidl(result);
                }
                HidlUtils::audioConfigToHal(suggestedConfig, config);
            });
    return processReturn("openInputStream", ret, retval);
}

status_t DeviceHalHidl::supportsAudioPatches(bool *supportsPatches) {
    if (mDevice == 0) return NO_INIT;
    return processReturn("supportsAudioPatches", mDevice->supportsAudioPatches(), supportsPatches);
}

status_t DeviceHalHidl::createAudioPatch(
        unsigned int num_sources,
        const struct audio_port_config *sources,
        unsigned int num_sinks,
        const struct audio_port_config *sinks,
        audio_patch_handle_t *patch) {
    if (mDevice == 0) return NO_INIT;
    if (patch == nullptr) return BAD_VALUE;

#if MAJOR_VERSION < 6
    if (*patch != AUDIO_PATCH_HANDLE_NONE) {
        status_t status = releaseAudioPatch(*patch);
        ALOGW_IF(status != NO_ERROR, "%s error %d releasing patch handle %d",
            __func__, status, *patch);
        *patch = AUDIO_PATCH_HANDLE_NONE;
    }
#endif

    hidl_vec<AudioPortConfig> hidlSources, hidlSinks;
    HidlUtils::audioPortConfigsFromHal(num_sources, sources, &hidlSources);
    HidlUtils::audioPortConfigsFromHal(num_sinks, sinks, &hidlSinks);
    Result retval = Result::OK;
    Return<void> ret;
    std::string methodName = "createAudioPatch";
    if (*patch == AUDIO_PATCH_HANDLE_NONE) {  // always true for MAJOR_VERSION < 6
        ret = mDevice->createAudioPatch(
                hidlSources, hidlSinks,
                [&](Result r, AudioPatchHandle hidlPatch) {
                    retval = r;
                    if (retval == Result::OK) {
                        *patch = static_cast<audio_patch_handle_t>(hidlPatch);
                    }
                });
    } else {
#if MAJOR_VERSION >= 6
        ret = mDevice->updateAudioPatch(
                *patch,
                hidlSources, hidlSinks,
                [&](Result r, AudioPatchHandle hidlPatch) {
                    retval = r;
                    if (retval == Result::OK) {
                        *patch = static_cast<audio_patch_handle_t>(hidlPatch);
                    }
                });
        methodName = "updateAudioPatch";
#endif
    }
    return processReturn(methodName.c_str(), ret, retval);
}

status_t DeviceHalHidl::releaseAudioPatch(audio_patch_handle_t patch) {
    if (mDevice == 0) return NO_INIT;
    return processReturn("releaseAudioPatch", mDevice->releaseAudioPatch(patch));
}

template <typename HalPort>
status_t DeviceHalHidl::getAudioPortImpl(HalPort *port) {
    if (mDevice == 0) return NO_INIT;
    AudioPort hidlPort;
    HidlUtils::audioPortFromHal(*port, &hidlPort);
    Result retval;
    Return<void> ret = mDevice->getAudioPort(
            hidlPort,
            [&](Result r, const AudioPort& p) {
                retval = r;
                if (retval == Result::OK) {
                    HidlUtils::audioPortToHal(p, port);
                }
            });
    return processReturn("getAudioPort", ret, retval);
}

status_t DeviceHalHidl::getAudioPort(struct audio_port *port) {
    return getAudioPortImpl(port);
}

status_t DeviceHalHidl::getAudioPort(struct audio_port_v7 *port) {
#if MAJOR_VERSION >= 7
    return getAudioPortImpl(port);
#else
    struct audio_port audioPort = {};
    status_t result = NO_ERROR;
    if (!audio_populate_audio_port(port, &audioPort)) {
        ALOGE("Failed to populate legacy audio port from audio_port_v7");
        result = BAD_VALUE;
    }
    status_t status = getAudioPort(&audioPort);
    if (status == NO_ERROR) {
        audio_populate_audio_port_v7(&audioPort, port);
    } else {
        result = status;
    }
    return result;
#endif
}

status_t DeviceHalHidl::setAudioPortConfig(const struct audio_port_config *config) {
    if (mDevice == 0) return NO_INIT;
    AudioPortConfig hidlConfig;
    HidlUtils::audioPortConfigFromHal(*config, &hidlConfig);
    return processReturn("setAudioPortConfig", mDevice->setAudioPortConfig(hidlConfig));
}

#if MAJOR_VERSION == 2
status_t DeviceHalHidl::getMicrophones(
        std::vector<media::MicrophoneInfo> *microphonesInfo __unused) {
    if (mDevice == 0) return NO_INIT;
    return INVALID_OPERATION;
}
#elif MAJOR_VERSION >= 4
status_t DeviceHalHidl::getMicrophones(std::vector<media::MicrophoneInfo> *microphonesInfo) {
    if (mDevice == 0) return NO_INIT;
    Result retval;
    Return<void> ret = mDevice->getMicrophones(
            [&](Result r, hidl_vec<MicrophoneInfo> micArrayHal) {
        retval = r;
        for (size_t k = 0; k < micArrayHal.size(); k++) {
            audio_microphone_characteristic_t dst;
            //convert
            (void)CoreUtils::microphoneInfoToHal(micArrayHal[k], &dst);
            media::MicrophoneInfo microphone = media::MicrophoneInfo(dst);
            microphonesInfo->push_back(microphone);
        }
    });
    return processReturn("getMicrophones", ret, retval);
}
#endif

#if MAJOR_VERSION >= 6
status_t DeviceHalHidl::addDeviceEffect(
        audio_port_handle_t device, sp<EffectHalInterface> effect) {
    if (mDevice == 0) return NO_INIT;
    return processReturn("addDeviceEffect", mDevice->addDeviceEffect(
            static_cast<AudioPortHandle>(device),
            static_cast<EffectHalHidl*>(effect.get())->effectId()));
}
#else
status_t DeviceHalHidl::addDeviceEffect(
        audio_port_handle_t device __unused, sp<EffectHalInterface> effect __unused) {
    return INVALID_OPERATION;
}
#endif

#if MAJOR_VERSION >= 6
status_t DeviceHalHidl::removeDeviceEffect(
        audio_port_handle_t device, sp<EffectHalInterface> effect) {
    if (mDevice == 0) return NO_INIT;
    return processReturn("removeDeviceEffect", mDevice->removeDeviceEffect(
            static_cast<AudioPortHandle>(device),
            static_cast<EffectHalHidl*>(effect.get())->effectId()));
}
#else
status_t DeviceHalHidl::removeDeviceEffect(
        audio_port_handle_t device __unused, sp<EffectHalInterface> effect __unused) {
    return INVALID_OPERATION;
}
#endif

status_t DeviceHalHidl::dump(int fd, const Vector<String16>& args) {
    if (mDevice == 0) return NO_INIT;
    native_handle_t* hidlHandle = native_handle_create(1, 0);
    hidlHandle->data[0] = fd;
    hidl_vec<hidl_string> hidlArgs;
    argsFromHal(args, &hidlArgs);
    Return<void> ret = mDevice->debug(hidlHandle, hidlArgs);
    native_handle_delete(hidlHandle);

    // TODO(b/111997867, b/177271958)  Workaround - remove when fixed.
    // A Binder transmitted fd may not close immediately due to a race condition b/111997867
    // when the remote binder thread removes the last refcount to the fd blocks in the
    // kernel for binder activity. We send a Binder ping() command to unblock the thread
    // and complete the fd close / release.
    //
    // See DeviceHalHidl::dump(), EffectHalHidl::dump(), StreamHalHidl::dump(),
    //     EffectsFactoryHalHidl::dumpEffects().

    (void)mDevice->ping(); // synchronous Binder call

    return processReturn("dump", ret);
}

} // namespace CPP_VERSION
} // namespace android