1 /* 2 * Copyright (C) 2012 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 ANDROID_SERVERS_CAMERA_CAMERA2_CALLBACKPROCESSOR_H 18 #define ANDROID_SERVERS_CAMERA_CAMERA2_CALLBACKPROCESSOR_H 19 20 #include <atomic> 21 22 #include <utils/Thread.h> 23 #include <utils/String16.h> 24 #include <utils/Vector.h> 25 #include <utils/Mutex.h> 26 #include <utils/Condition.h> 27 #include <gui/CpuConsumer.h> 28 29 #include "api1/client2/Camera2Heap.h" 30 31 namespace android { 32 33 class Camera2Client; 34 class CameraDeviceBase; 35 36 namespace camera2 { 37 38 struct Parameters; 39 40 /*** 41 * Still image capture output image processing 42 */ 43 class CallbackProcessor: 44 public Thread, public CpuConsumer::FrameAvailableListener { 45 public: 46 explicit CallbackProcessor(sp<Camera2Client> client); 47 ~CallbackProcessor(); 48 49 void onFrameAvailable(const BufferItem& item); 50 51 // Set to NULL to disable the direct-to-app callback window 52 status_t setCallbackWindow(const sp<Surface>& callbackWindow); 53 status_t updateStream(const Parameters ¶ms); 54 status_t deleteStream(); 55 int getStreamId() const; 56 57 void unpauseCallback(); 58 void pauseCallback(); 59 60 void dump(int fd, const Vector<String16>& args) const; 61 private: 62 static const nsecs_t kWaitDuration = 10000000; // 10 ms 63 wp<Camera2Client> mClient; 64 wp<CameraDeviceBase> mDevice; 65 int mId; 66 67 mutable Mutex mInputMutex; 68 bool mCallbackAvailable; 69 Condition mCallbackAvailableSignal; 70 71 enum { 72 NO_STREAM = -1 73 }; 74 75 std::atomic<bool> mCallbackPaused; 76 77 // True if mCallbackWindow is a remote consumer, false if just the local 78 // mCallbackConsumer 79 bool mCallbackToApp; 80 int mCallbackStreamId; 81 static const size_t kCallbackHeapCount = 6; 82 sp<CpuConsumer> mCallbackConsumer; 83 sp<Surface> mCallbackWindow; 84 sp<Camera2Heap> mCallbackHeap; 85 size_t mCallbackHeapHead, mCallbackHeapFree; 86 87 virtual bool threadLoop(); 88 89 status_t processNewCallback(sp<Camera2Client> &client); 90 // Used when shutting down 91 status_t discardNewCallback(); 92 93 // Convert from flexible YUV to NV21 or YV12 94 status_t convertFromFlexibleYuv(int32_t previewFormat, 95 uint8_t *dst, 96 const CpuConsumer::LockedBuffer &src, 97 uint32_t dstYStride, 98 uint32_t dstCStride) const; 99 }; 100 101 102 }; //namespace camera2 103 }; //namespace android 104 105 #endif 106