1 /* 2 * Copyright (C) 2019 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_HARDWARE_AUTOMOTIVE_EVS_V1_1_EVSCAMERA_H 18 #define ANDROID_HARDWARE_AUTOMOTIVE_EVS_V1_1_EVSCAMERA_H 19 20 #include "ConfigManager.h" 21 22 #include <android/hardware/automotive/evs/1.1/IEvsCamera.h> 23 #include <android/hardware/automotive/evs/1.1/IEvsCameraStream.h> 24 #include <android/hardware/automotive/evs/1.1/IEvsDisplay.h> 25 #include <android/hardware/automotive/evs/1.1/types.h> 26 #include <ui/GraphicBuffer.h> 27 28 #include <thread> 29 30 namespace android::hardware::automotive::evs::V1_1::implementation { 31 32 // From EvsEnumerator.h 33 class EvsEnumerator; 34 35 class EvsCamera : public IEvsCamera { 36 public: 37 // Methods from ::android::hardware::automotive::evs::V1_0::IEvsCamera follow. 38 Return<void> getCameraInfo(getCameraInfo_cb _hidl_cb) override; 39 Return<V1_0::EvsResult> setMaxFramesInFlight(uint32_t bufferCount) override; 40 Return<V1_0::EvsResult> startVideoStream(const sp<V1_0::IEvsCameraStream>& stream) override; 41 Return<void> stopVideoStream() override; 42 Return<void> doneWithFrame(const V1_0::BufferDesc& buffer) override; 43 44 Return<int32_t> getExtendedInfo(uint32_t opaqueIdentifier) override; 45 Return<V1_0::EvsResult> setExtendedInfo(uint32_t opaqueIdentifier, 46 int32_t opaqueValue) override; 47 48 // Methods from ::android::hardware::automotive::evs::V1_1::IEvsCamera follow. 49 Return<void> getCameraInfo_1_1(getCameraInfo_1_1_cb _hidl_cb) override; 50 Return<void> getPhysicalCameraInfo(const hidl_string& id, 51 getPhysicalCameraInfo_cb _hidl_cb) override; 52 Return<V1_0::EvsResult> pauseVideoStream() override; 53 Return<V1_0::EvsResult> resumeVideoStream() override; 54 Return<V1_0::EvsResult> doneWithFrame_1_1(const hidl_vec<BufferDesc>& buffer) override; 55 Return<V1_0::EvsResult> setMaster() override; 56 Return<V1_0::EvsResult> forceMaster(const sp<V1_0::IEvsDisplay>& display) override; 57 Return<V1_0::EvsResult> unsetMaster() override; 58 Return<void> getParameterList(getParameterList_cb _hidl_cb) override; 59 Return<void> getIntParameterRange(CameraParam id, getIntParameterRange_cb _hidl_cb) override; 60 Return<void> setIntParameter(CameraParam id, int32_t value, 61 setIntParameter_cb _hidl_cb) override; 62 Return<void> getIntParameter(CameraParam id, getIntParameter_cb _hidl_cb) override; 63 Return<V1_0::EvsResult> setExtendedInfo_1_1(uint32_t opaqueIdentifier, 64 const hidl_vec<uint8_t>& opaqueValue) override; 65 Return<void> getExtendedInfo_1_1(uint32_t opaqueIdentifier, 66 getExtendedInfo_1_1_cb _hidl_cb) override; 67 Return<void> importExternalBuffers(const hidl_vec<BufferDesc>& buffers, 68 importExternalBuffers_cb _hidl_cb) override; 69 70 static sp<EvsCamera> Create(const char* deviceName); 71 static sp<EvsCamera> Create(const char* deviceName, 72 std::unique_ptr<ConfigManager::CameraInfo>& camInfo, 73 const Stream* streamCfg = nullptr); 74 EvsCamera(const EvsCamera&) = delete; 75 EvsCamera& operator=(const EvsCamera&) = delete; 76 77 virtual ~EvsCamera() override; 78 void forceShutdown(); // This gets called if another caller "steals" ownership of the camera 79 getDesc()80 const CameraDesc& getDesc() { return mDescription; }; 81 82 private: 83 EvsCamera(const char* id, std::unique_ptr<ConfigManager::CameraInfo>& camInfo); 84 // These three functions are expected to be called while mAccessLock is held 85 // 86 bool setAvailableFrames_Locked(unsigned bufferCount); 87 unsigned increaseAvailableFrames_Locked(unsigned numToAdd); 88 unsigned decreaseAvailableFrames_Locked(unsigned numToRemove); 89 90 void generateFrames(); 91 void fillTestFrame(const V1_0::BufferDesc& buff); 92 void fillTestFrame(const BufferDesc& buff); 93 void returnBufferLocked(const uint32_t bufferId, const buffer_handle_t memHandle); 94 95 sp<EvsEnumerator> mEnumerator; // The enumerator object that created this camera 96 97 CameraDesc mDescription = {}; // The properties of this camera 98 99 std::thread mCaptureThread; // The thread we'll use to synthesize frames 100 101 uint32_t mWidth = 0; // Horizontal pixel count in the buffers 102 uint32_t mHeight = 0; // Vertical pixel count in the buffers 103 uint32_t mFormat = 0; // Values from android_pixel_format_t 104 uint64_t mUsage = 0; // Values from from Gralloc.h 105 uint32_t mStride = 0; // Bytes per line in the buffers 106 107 sp<IEvsCameraStream> mStream = nullptr; // The callback used to deliver each frame 108 109 struct BufferRecord { 110 buffer_handle_t handle; 111 bool inUse; 112 BufferRecordBufferRecord113 explicit BufferRecord(buffer_handle_t h) : handle(h), inUse(false){}; 114 }; 115 116 std::vector<BufferRecord> mBuffers; // Graphics buffers to transfer images 117 unsigned mFramesAllowed; // How many buffers are we currently using 118 unsigned mFramesInUse; // How many buffers are currently outstanding 119 120 enum StreamStateValues { 121 STOPPED, 122 RUNNING, 123 STOPPING, 124 DEAD, 125 }; 126 StreamStateValues mStreamState; 127 128 // Synchronization necessary to deconflict mCaptureThread from the main service thread 129 std::mutex mAccessLock; 130 131 // Static camera module information 132 std::unique_ptr<ConfigManager::CameraInfo>& mCameraInfo; 133 134 // For the extended info 135 std::unordered_map<uint32_t, hidl_vec<uint8_t>> mExtInfo; 136 std::unordered_map<CameraParam, int32_t> mParams; 137 }; 138 139 } // namespace android::hardware::automotive::evs::V1_1::implementation 140 141 #endif // ANDROID_HARDWARE_AUTOMOTIVE_EVS_V1_1_EVSCAMERA_H 142