1 files changed, 0 insertions, 167 deletions
diff --git a/host/common/include/chre_host/st_hal_lpma_handler.h b/host/common/include/chre_host/st_hal_lpma_handler.h
deleted file mode 100644
index 4210802f..00000000
--- a/host/common/include/chre_host/st_hal_lpma_handler.h
+++ /dev/null
@@ -1,167 +0,0 @@
-/*
- * 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.
- */
-
-#ifndef ST_HAL_LPMA_HANDLER_H_
-#define ST_HAL_LPMA_HANDLER_H_
-
-#include <condition_variable>
-#include <cstdio>
-#include <functional>
-#include <mutex>
-#include <thread>
-
-#include "chre_host/log.h"
-
-#include <android/hardware/soundtrigger/2.0/ISoundTriggerHw.h>
-#include <hardware_legacy/power.h>
-
-using android::hardware::hidl_death_recipient;
-using android::hardware::Return;
-using android::hardware::soundtrigger::V2_0::ISoundTriggerHw;
-using android::hardware::soundtrigger::V2_0::SoundModelHandle;
-using android::hardware::soundtrigger::V2_0::SoundModelType;
-using android::hidl::base::V1_0::IBase;
-
-namespace android {
-namespace chre {
-
-/**
- * Handles interactions with the SoundTrigger (ST) HAL, to issue configuration
- * requests for the always-on audio hardware to enable Low Power Microphone
- * Access (LPMA) in CHRE. Typically, this class is used when the CHRE audio
- * implementation for a given system requires notifying the ST HAL when audio
- * is requested/released within CHRE
- */
-class StHalLpmaHandler {
- public:
-  //! Class to handle when a connected ST HAL service dies
-  class StHalDeathRecipient : public hidl_death_recipient {
-   public:
-    StHalDeathRecipient() = delete;
-    explicit StHalDeathRecipient(std::function<void()> cb) : mCallback(cb) {}
-
-    /**
-     * Callback that is called when a connected service dies. It mainly
-     * resets the LPMA Enabled flag, and unblocks the LPMA processing thread.
-     * It is to be used in conjunction with linkToDeath(), which we do
-     * in checkConnectionToStHalServiceLocked().
-     */
-    virtual void serviceDied(uint64_t /* cookie */,
-                             const wp<IBase> & /* who */) override {
-      mCallback();
-    }
-
-   private:
-    std::function<void()> mCallback;
-  };
-
-  StHalLpmaHandler() = delete;
-
-  explicit StHalLpmaHandler(bool allowed);
-
-  ~StHalLpmaHandler() {
-    if (mThread.has_value()) {
-      // TODO: Change this to join after adding proper handler
-      mThread->detach();
-    }
-  }
-
-  /**
-   * If LPMA is enabled, starts a worker thread to load/unload models.
-   */
-  void init();
-
-  /**
-   * Sets the target state for LPMA to be enabled. This triggers another thread
-   * to perform the async operation of enabling or disabling the LPMA use case.
-   *
-   * @param enabled Whether LPMA is to be enabled or disabled.
-   */
-  void enable(bool enabled);
-
-  /**
-   * Loads the LPMA use case via the SoundTrigger HAL HIDL service.
-   *
-   * @return true if LPMA was enabled successfully, false otherwise.
-   */
-  bool load();
-
-  /**
-   * Unloads the LPMA use case via the SoundTrigger HAL HIDL service. This
-   * function does not indicate success/failure as it is expected that even in
-   * the event of a failure to unload, the use case will be unloaded. As long as
-   * the sound trigger HAL received the request we can be assured that the use
-   * case will be unloaded (even if it means reseting the codec or otherwise).
-   */
-  void unload();
-
-  /**
-   * Entry point for the thread that loads/unloads sound models from the
-   * ST HAL
-   */
-  void StHalLpmaHandlerThreadEntry();
-
- private:
-  const bool mIsLpmaAllowed;
-  bool mCurrentLpmaEnabled;
-  bool mTargetLpmaEnabled;
-  bool mCondVarPredicate;
-  SoundModelHandle mLpmaHandle = 0;
-
-  int mRetryCount;
-  useconds_t mRetryDelay;
-
-  std::optional<std::thread> mThread;
-  std::mutex mMutex;
-  std::condition_variable mCondVar;
-
-  sp<StHalDeathRecipient> mDeathRecipient;
-  sp<ISoundTriggerHw> mStHalService;
-
-  /**
-   * Checks for a valid connection to the ST HAL service, reconnects if not
-   * already connected. This method should only be invoked after acquiring the
-   * class mutex has been locked.
-   */
-  void checkConnectionToStHalServiceLocked();
-
-  /**
-   * Invoked by the HAL service death callback. see
-   * StHalDeathRecipient::ServiceDied()
-   */
-  void onStHalServiceDeath();
-
-  /**
-   * This function blocks on a condition variable and when notified, based
-   * on its current state and as notified by enable(), performs a load or
-   * unload. The function also resets the delay and retry counts if the current
-   * and next states match
-   *
-   * @return true if the state update succeeded, and we don't need to retry with
-   * a delay
-   */
-  bool waitOnStHalRequestAndProcess();
-
-  /**
-   * Delay retrying a load if a state update failed
-   */
-  void delay();
-};
-
-}  // namespace chre
-}  // namespace android
-
-#endif  // ST_HAL_LPMA_HANDLER_H_