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 #pragma once 17 #include <android/hardware/camera/device/3.4/ICameraDeviceSession.h> 18 #include "HandleImporter.h" 19 20 namespace android::hardware::camera::device::V3_4::implementation { 21 22 using ::android::hardware::camera::common::V1_0::helper::HandleImporter; 23 using ::android::hardware::camera::device::V3_2::StreamBuffer; 24 25 // Small wrapper for allocating/freeing native handles 26 class ReleaseFence { 27 public: 28 ReleaseFence(int fence_fd); 29 ~ReleaseFence(); 30 handle()31 native_handle_t* handle() const { return handle_; } 32 33 private: 34 native_handle_t* handle_; 35 }; 36 37 // CachedStreamBuffer holds a buffer of camera3 stream. 38 class CachedStreamBuffer { 39 public: 40 CachedStreamBuffer(); 41 CachedStreamBuffer(const StreamBuffer& buffer); 42 // Not copyable 43 CachedStreamBuffer(const CachedStreamBuffer&) = delete; 44 CachedStreamBuffer& operator=(const CachedStreamBuffer&) = delete; 45 // ...but movable 46 CachedStreamBuffer(CachedStreamBuffer&& from) noexcept; 47 CachedStreamBuffer& operator=(CachedStreamBuffer&& from) noexcept; 48 49 ~CachedStreamBuffer(); 50 valid()51 bool valid() const { return buffer_ != nullptr; } bufferId()52 uint64_t bufferId() const { return buffer_id_; } streamId()53 int32_t streamId() const { return stream_id_; } acquireFence()54 int acquireFence() const { return acquire_fence_; } 55 56 void importFence(const native_handle_t* fence_handle); 57 // Acquire methods wait first on acquire fence and then return pointers to 58 // data. Data is nullptr if the wait timed out 59 YCbCrLayout acquireAsYUV(int32_t width, int32_t height, int timeout_ms); 60 void* acquireAsBlob(int32_t size, int timeout_ms); 61 int release(); 62 63 private: 64 buffer_handle_t buffer_; 65 uint64_t buffer_id_; 66 int32_t stream_id_; 67 int acquire_fence_; 68 }; 69 70 } // namespace android::hardware::camera::device::V3_4::implementation 71