1 /* 2 * Copyright (C) 2021 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef CHRE_PLATFORM_SHARED_AUDIO_PAL_PLATFORM_AUDIO_BASE_H_ 18 #define CHRE_PLATFORM_SHARED_AUDIO_PAL_PLATFORM_AUDIO_BASE_H_ 19 20 #include "chre/pal/audio.h" 21 #include "chre/platform/shared/platform_pal.h" 22 23 namespace chre { 24 25 /** 26 * Provides an instance of the PlatformAudioBase class that uses the CHRE PAL to 27 * access the audio subsystem. 28 */ 29 class PlatformAudioBase : public PlatformPal { 30 protected: 31 //! The instance of callbacks that are provided to the CHRE PAL. 32 static const chrePalAudioCallbacks sCallbacks; 33 34 //! The instance of the CHRE PAL API. This will be set to nullptr if the 35 //! platform does not supply an implementation. 36 const chrePalAudioApi *mApi; 37 38 static void audioDataEventCallback(struct chreAudioDataEvent *event); 39 static void audioAvailabilityCallback(uint32_t handle, bool available); 40 }; 41 42 } // namespace chre 43 44 #endif // CHRE_PLATFORM_SHARED_AUDIO_PAL_PLATFORM_AUDIO_BASE_H_ 45