hal/audio_extn/PowerPolicyClient.cpp

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#include "PowerPolicyClient.h"

#include <android-base/logging.h>
#include <dlfcn.h>

#ifdef DAEMON_SUPPORT_AUTO
#define LIB_AUDIO_HAL_PLUGIN "libaudiohalpluginclient.so"
#else
#define LIB_AUDIO_HAL_PLUGIN "libaudiohalplugin.so"
#endif

namespace aafap = aidl::android::frameworks::automotive::powerpolicy;

using aafap::CarPowerPolicy;
using aafap::CarPowerPolicyFilter;
using aafap::PowerComponent;
using ::android::frameworks::automotive::powerpolicy::hasComponent;
using ::ndk::ScopedAStatus;

namespace {

constexpr PowerComponent kAudioComponent = PowerComponent::AUDIO;
constexpr PowerComponent kMicComponent = PowerComponent::MICROPHONE;

}  // namespace

PowerPolicyClient::PowerPolicyClient() {
    plugin_handle = dlopen(LIB_AUDIO_HAL_PLUGIN, RTLD_NOW);
    if (plugin_handle == NULL) {
        LOG(ERROR) << "Failed to open plugin library";
        return;
    }

    hal_plugin_send_msg = (hal_plugin_send_msg_t) dlsym(plugin_handle,
                                         "audio_hal_plugin_send_msg");
    if (hal_plugin_send_msg == NULL) {
        LOG(ERROR) << "dlsym failed for audio_hal_plugin_send_msg";
        dlclose(plugin_handle);
        plugin_handle = NULL;
    }

    LOG(ERROR) << "PowerPolicyClient Initialzed";
}

PowerPolicyClient::~PowerPolicyClient() {
    if (plugin_handle != NULL)
        dlclose(plugin_handle);
}

void PowerPolicyClient::onInitFailed() {
    LOG(ERROR) << "Initializing power policy client failed";
}

std::vector<PowerComponent> PowerPolicyClient::getComponentsOfInterest() {
    std::vector<PowerComponent> components{kAudioComponent, kMicComponent};
    return components;
}

ScopedAStatus PowerPolicyClient::onPolicyChanged(const CarPowerPolicy& powerPolicy) {
    uint8_t disable = 0;

    if (hasComponent(powerPolicy.enabledComponents, kAudioComponent)) {
        LOG(ERROR) << "Power policy: Audio component is enabled";
        disable = 0;
        if (hal_plugin_send_msg != NULL)
            hal_plugin_send_msg(AUDIO_HAL_PLUGIN_MSG_SILENT_MODE,
                                &disable, sizeof(disable));
    } else if (hasComponent(powerPolicy.disabledComponents, kAudioComponent)) {
        LOG(ERROR) << "Power policy: Audio component is disabled";
        disable = 1;
        if (hal_plugin_send_msg != NULL)
            hal_plugin_send_msg(AUDIO_HAL_PLUGIN_MSG_SILENT_MODE,
                                &disable, sizeof(disable));
    }

    if (hasComponent(powerPolicy.enabledComponents, kMicComponent)) {
        LOG(ERROR) << "Power policy: Microphone component is enabled";
        disable = 0;
        if (hal_plugin_send_msg != NULL)
            hal_plugin_send_msg(AUDIO_HAL_PLUGIN_MSG_MIC_STATE,
                                &disable, sizeof(disable));
    } else if (hasComponent(powerPolicy.disabledComponents, kMicComponent)) {
        disable = 1;
        if (hal_plugin_send_msg != NULL)
            hal_plugin_send_msg(AUDIO_HAL_PLUGIN_MSG_MIC_STATE,
                                &disable, sizeof(disable));
        LOG(ERROR) << "Power policy: Microphone component is disabled";
    }
    return ScopedAStatus::ok();
}