Initial Android Auto External View Systems drivers
Add support for EVS system camera and display drivers.
These build and run but still contain significant placeholder code and
TODO items.
Bug: 32095143
Test: run against evs_test (submitted in future change set)
Change-Id: I9187e888f03248e5cd43293253dc76a71184c02d
diff --git a/evs/1.0/default/EvsCamera.h b/evs/1.0/default/EvsCamera.h
new file mode 100644
index 0000000..5d29125
--- /dev/null
+++ b/evs/1.0/default/EvsCamera.h
@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_EVS_V1_0_EVSCAMERA_H
+#define ANDROID_HARDWARE_EVS_V1_0_EVSCAMERA_H
+
+#include <android/hardware/evs/1.0/types.h>
+#include <android/hardware/evs/1.0/IEvsCamera.h>
+#include <ui/GraphicBuffer.h>
+
+#include <thread>
+
+namespace android {
+namespace hardware {
+namespace evs {
+namespace V1_0 {
+namespace implementation {
+
+class EvsCamera : public IEvsCamera {
+public:
+ // Methods from ::android::hardware::evs::V1_0::IEvsCamera follow.
+ Return<void> getId(getId_cb id_cb) override;
+ Return<EvsResult> setMaxFramesInFlight(uint32_t bufferCount) override;
+ Return<EvsResult> startVideoStream(const ::android::sp<IEvsCameraStream>& stream) override;
+ Return<EvsResult> doneWithFrame(uint32_t frameId, const hidl_handle& bufferHandle) override;
+ Return<void> stopVideoStream() override;
+ Return<int32_t> getExtendedInfo(uint32_t opaqueIdentifier) override;
+ Return<EvsResult> setExtendedInfo(uint32_t opaqueIdentifier, int32_t opaqueValue) override;
+
+ // Implementation details
+ EvsCamera(const char* id);
+ virtual ~EvsCamera() override;
+
+ const CameraDesc& getDesc() { return mDescription; };
+ void GenerateFrames();
+
+ static const char kCameraName_Backup[];
+ static const char kCameraName_RightTurn[];
+
+private:
+ CameraDesc mDescription = {}; // The properties of this camera
+
+ buffer_handle_t mBuffer = nullptr; // A graphics buffer into which we'll store images
+ uint32_t mWidth = 0; // number of pixels across the buffer
+ uint32_t mHeight = 0; // number of pixels vertically in the buffer
+ uint32_t mStride = 0; // Bytes per line in the buffer
+
+ sp<IEvsCameraStream> mStream = nullptr; // The callback the user expects when a frame is ready
+
+ std::thread mCaptureThread; // The thread we'll use to synthesize frames
+
+ uint32_t mFrameId; // A frame counter used to identify specific frames
+
+ enum StreamStateValues {
+ STOPPED,
+ RUNNING,
+ STOPPING,
+ };
+ StreamStateValues mStreamState;
+ bool mFrameBusy; // A flag telling us our one buffer is in use
+
+ std::mutex mAccessLock;
+};
+
+} // namespace implementation
+} // namespace V1_0
+} // namespace evs
+} // namespace hardware
+} // namespace android
+
+#endif // ANDROID_HARDWARE_EVS_V1_0_EVSCAMERA_H