android: Remove internal thread

Now that libcamera creates threads internally and doesn't rely on an
application-provided event loop, remove the thread from the Android
Camera HAL layer. The CameraProxy class becomes meaningless, remove it
and communicate directly from the CameraHalManager to the CameraDevice.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Jacopo Mondi <jacopo@jmondi.org>

src/android/camera_hal_manager.h

@@ -7,8 +7,7 @@
 #ifndef __ANDROID_CAMERA_MANAGER_H__
 #define __ANDROID_CAMERA_MANAGER_H__
 
-#include <condition_variable>
-#include <mutex>
+#include <stddef.h>
 #include <vector>
 
 #include <hardware/hardware.h>
@@ -16,33 +15,27 @@
 
 #include <libcamera/camera_manager.h>
 
-#include "thread.h"
-
 class CameraDevice;
-class CameraProxy;
 
-class CameraHalManager : public libcamera::Thread
+class CameraHalManager
 {
 public:
+	CameraHalManager();
 	~CameraHalManager();
 
 	int init();
 
-	CameraProxy *open(unsigned int id, const hw_module_t *module);
+	CameraDevice *open(unsigned int id, const hw_module_t *module);
 
 	unsigned int numCameras() const;
 	int getCameraInfo(unsigned int id, struct camera_info *info);
 
 private:
-	void run() override;
 	camera_metadata_t *getStaticMetadata(unsigned int id);
 
 	libcamera::CameraManager *cameraManager_;
 
-	std::mutex mutex_;
-	std::condition_variable cv_;
-
-	std::vector<std::unique_ptr<CameraProxy>> proxies_;
+	std::vector<std::unique_ptr<CameraDevice>> cameras_;
 };
 
 #endif /* __ANDROID_CAMERA_MANAGER_H__ */