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 <android/hardware/automotive/evs/1.1/types.h> 21 #include <android/hardware/automotive/evs/1.1/IEvsCamera.h> 22 #include <android/hardware/automotive/evs/1.1/IEvsCameraStream.h> 23 #include <android/hardware/automotive/evs/1.1/IEvsDisplay.h> 24 #include <ui/GraphicBuffer.h> 25 26 #include <thread> 27 28 #include "ConfigManager.h" 29 30 using BufferDesc_1_0 = ::android::hardware::automotive::evs::V1_0::BufferDesc; 31 using BufferDesc_1_1 = ::android::hardware::automotive::evs::V1_1::BufferDesc; 32 using IEvsCameraStream_1_0 = ::android::hardware::automotive::evs::V1_0::IEvsCameraStream; 33 using IEvsCameraStream_1_1 = ::android::hardware::automotive::evs::V1_1::IEvsCameraStream; 34 using ::android::hardware::automotive::evs::V1_0::EvsResult; 35 using ::android::hardware::automotive::evs::V1_0::CameraDesc; 36 using IEvsDisplay_1_0 = ::android::hardware::automotive::evs::V1_0::IEvsDisplay; 37 using IEvsDisplay_1_1 = ::android::hardware::automotive::evs::V1_1::IEvsDisplay; 38 39 40 namespace android { 41 namespace hardware { 42 namespace automotive { 43 namespace evs { 44 namespace V1_1 { 45 namespace implementation { 46 47 48 // From EvsEnumerator.h 49 class EvsEnumerator; 50 51 52 class EvsCamera : public IEvsCamera { 53 public: 54 // Methods from ::android::hardware::automotive::evs::V1_0::IEvsCamera follow. 55 Return<void> getCameraInfo(getCameraInfo_cb _hidl_cb) override; 56 Return<EvsResult> setMaxFramesInFlight(uint32_t bufferCount) override; 57 Return<EvsResult> startVideoStream(const ::android::sp<IEvsCameraStream_1_0>& stream) override; 58 Return<void> stopVideoStream() override; 59 Return<void> doneWithFrame(const BufferDesc_1_0& buffer) override; 60 61 Return<int32_t> getExtendedInfo(uint32_t opaqueIdentifier) override; 62 Return<EvsResult> setExtendedInfo(uint32_t opaqueIdentifier, int32_t opaqueValue) override; 63 64 // Methods from ::android::hardware::automotive::evs::V1_1::IEvsCamera follow. 65 Return<void> getCameraInfo_1_1(getCameraInfo_1_1_cb _hidl_cb) override; 66 Return<void> getPhysicalCameraInfo(const hidl_string& id, 67 getPhysicalCameraInfo_cb _hidl_cb) override; 68 Return<EvsResult> pauseVideoStream() override; 69 Return<EvsResult> resumeVideoStream() override; 70 Return<EvsResult> doneWithFrame_1_1(const hidl_vec<BufferDesc_1_1>& buffer) override; 71 Return<EvsResult> setMaster() override; 72 Return<EvsResult> forceMaster(const sp<IEvsDisplay_1_0>& display) override; 73 Return<EvsResult> unsetMaster() override; 74 Return<void> getParameterList(getParameterList_cb _hidl_cb) override; 75 Return<void> getIntParameterRange(CameraParam id, 76 getIntParameterRange_cb _hidl_cb) override; 77 Return<void> setIntParameter(CameraParam id, int32_t value, 78 setIntParameter_cb _hidl_cb) override; 79 Return<void> getIntParameter(CameraParam id, 80 getIntParameter_cb _hidl_cb) override; 81 Return<EvsResult> setExtendedInfo_1_1(uint32_t opaqueIdentifier, 82 const hidl_vec<uint8_t>& opaqueValue) override; 83 Return<void> getExtendedInfo_1_1(uint32_t opaqueIdentifier, 84 getExtendedInfo_1_1_cb _hidl_cb) override; 85 Return<void> importExternalBuffers(const hidl_vec<BufferDesc_1_1>& buffers, 86 importExternalBuffers_cb _hidl_cb) override; 87 88 static sp<EvsCamera> Create(const char *deviceName); 89 static sp<EvsCamera> Create(const char *deviceName, 90 unique_ptr<ConfigManager::CameraInfo> &camInfo, 91 const Stream *streamCfg = nullptr); 92 EvsCamera(const EvsCamera&) = delete; 93 EvsCamera& operator=(const EvsCamera&) = delete; 94 95 virtual ~EvsCamera() override; 96 void forceShutdown(); // This gets called if another caller "steals" ownership of the camera 97 getDesc()98 const CameraDesc& getDesc() { return mDescription; }; 99 100 static const char kCameraName_Backup[]; 101 102 private: 103 EvsCamera(const char *id, 104 unique_ptr<ConfigManager::CameraInfo> &camInfo); 105 // These three functions are expected to be called while mAccessLock is held 106 // 107 bool setAvailableFrames_Locked(unsigned bufferCount); 108 unsigned increaseAvailableFrames_Locked(unsigned numToAdd); 109 unsigned decreaseAvailableFrames_Locked(unsigned numToRemove); 110 111 void generateFrames(); 112 void fillTestFrame(const BufferDesc_1_0& buff); 113 void fillTestFrame(const BufferDesc_1_1& buff); 114 void returnBuffer(const uint32_t bufferId, const buffer_handle_t memHandle); 115 116 sp<EvsEnumerator> mEnumerator; // The enumerator object that created this camera 117 118 CameraDesc mDescription = {}; // The properties of this camera 119 120 std::thread mCaptureThread; // The thread we'll use to synthesize frames 121 122 uint32_t mWidth = 0; // Horizontal pixel count in the buffers 123 uint32_t mHeight = 0; // Vertical pixel count in the buffers 124 uint32_t mFormat = 0; // Values from android_pixel_format_t 125 uint64_t mUsage = 0; // Values from from Gralloc.h 126 uint32_t mStride = 0; // Bytes per line in the buffers 127 128 sp<IEvsCameraStream_1_1> mStream = nullptr; // The callback used to deliver each frame 129 130 struct BufferRecord { 131 buffer_handle_t handle; 132 bool inUse; 133 BufferRecordBufferRecord134 explicit BufferRecord(buffer_handle_t h) : handle(h), inUse(false) {}; 135 }; 136 137 std::vector <BufferRecord> mBuffers; // Graphics buffers to transfer images 138 unsigned mFramesAllowed; // How many buffers are we currently using 139 unsigned mFramesInUse; // How many buffers are currently outstanding 140 141 enum StreamStateValues { 142 STOPPED, 143 RUNNING, 144 STOPPING, 145 DEAD, 146 }; 147 StreamStateValues mStreamState; 148 149 // Synchronization necessary to deconflict mCaptureThread from the main service thread 150 std::mutex mAccessLock; 151 152 // Static camera module information 153 unique_ptr<ConfigManager::CameraInfo> &mCameraInfo; 154 }; 155 156 } // namespace implementation 157 } // namespace V1_1 158 } // namespace evs 159 } // namespace automotive 160 } // namespace hardware 161 } // namespace android 162 163 #endif // ANDROID_HARDWARE_AUTOMOTIVE_EVS_V1_1_EVSCAMERA_H 164