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-rw-r--r--src/android/camera3_hal.cpp8
-rw-r--r--src/android/camera_device.cpp48
-rw-r--r--src/android/camera_device.h16
-rw-r--r--src/android/camera_hal_manager.cpp78
-rw-r--r--src/android/camera_hal_manager.h17
-rw-r--r--src/android/camera_ops.cpp96
-rw-r--r--src/android/camera_ops.h15
-rw-r--r--src/android/camera_proxy.cpp180
-rw-r--r--src/android/camera_proxy.h42
-rw-r--r--src/android/meson.build2
10 files changed, 188 insertions, 314 deletions
diff --git a/src/android/camera3_hal.cpp b/src/android/camera3_hal.cpp
index 8d2629ca..d6fc1ecc 100644
--- a/src/android/camera3_hal.cpp
+++ b/src/android/camera3_hal.cpp
@@ -7,8 +7,8 @@
#include <hardware/camera_common.h>
+#include "camera_device.h"
#include "camera_hal_manager.h"
-#include "camera_proxy.h"
#include "log.h"
using namespace libcamera;
@@ -71,14 +71,14 @@ static int hal_dev_open(const hw_module_t *module, const char *name,
LOG(HAL, Debug) << "Open camera " << name;
int id = atoi(name);
- CameraProxy *proxy = cameraManager.open(id, module);
- if (!proxy) {
+ CameraDevice *camera = cameraManager.open(id, module);
+ if (!camera) {
LOG(HAL, Error)
<< "Failed to open camera module '" << id << "'";
return -ENODEV;
}
- *device = &proxy->camera3Device()->common;
+ *device = &camera->camera3Device()->common;
return 0;
}
diff --git a/src/android/camera_device.cpp b/src/android/camera_device.cpp
index 67c1d47e..b460d499 100644
--- a/src/android/camera_device.cpp
+++ b/src/android/camera_device.cpp
@@ -6,6 +6,7 @@
*/
#include "camera_device.h"
+#include "camera_ops.h"
#include "log.h"
#include "utils.h"
@@ -39,13 +40,13 @@ CameraDevice::Camera3RequestDescriptor::~Camera3RequestDescriptor()
* \class CameraDevice
*
* The CameraDevice class wraps a libcamera::Camera instance, and implements
- * the camera_device_t interface by handling RPC requests received from its
- * associated CameraProxy.
+ * the camera3_device_t interface, bridging calls received from the Android
+ * camera service to the CameraDevice.
*
- * It translate parameters and operations from Camera HALv3 API to the libcamera
- * ones to provide static information for a Camera, create request templates
- * for it, process capture requests and then deliver capture results back
- * to the framework using the designated callbacks.
+ * The class translates parameters and operations from the Camera HALv3 API to
+ * the libcamera API to provide static information for a Camera, create request
+ * templates for it, process capture requests and then deliver capture results
+ * back to the framework using the designated callbacks.
*/
CameraDevice::CameraDevice(unsigned int id, const std::shared_ptr<Camera> &camera)
@@ -63,7 +64,7 @@ CameraDevice::~CameraDevice()
delete it.second;
}
-int CameraDevice::open()
+int CameraDevice::open(const hw_module_t *hardwareModule)
{
int ret = camera_->acquire();
if (ret) {
@@ -71,6 +72,19 @@ int CameraDevice::open()
return ret;
}
+ /* Initialize the hw_device_t in the instance camera3_module_t. */
+ camera3Device_.common.tag = HARDWARE_DEVICE_TAG;
+ camera3Device_.common.version = CAMERA_DEVICE_API_VERSION_3_3;
+ camera3Device_.common.module = (hw_module_t *)hardwareModule;
+ camera3Device_.common.close = hal_dev_close;
+
+ /*
+ * The camera device operations. These actually implement
+ * the Android Camera HALv3 interface.
+ */
+ camera3Device_.ops = &hal_dev_ops;
+ camera3Device_.priv = this;
+
return 0;
}
@@ -90,7 +104,7 @@ void CameraDevice::setCallbacks(const camera3_callback_ops_t *callbacks)
/*
* Return static information for the camera.
*/
-camera_metadata_t *CameraDevice::getStaticMetadata()
+const camera_metadata_t *CameraDevice::getStaticMetadata()
{
if (staticMetadata_)
return staticMetadata_->get();
@@ -675,7 +689,7 @@ int CameraDevice::configureStreams(camera3_stream_configuration_t *stream_list)
return 0;
}
-void CameraDevice::processCaptureRequest(camera3_capture_request_t *camera3Request)
+int CameraDevice::processCaptureRequest(camera3_capture_request_t *camera3Request)
{
StreamConfiguration *streamConfiguration = &config_->at(0);
Stream *stream = streamConfiguration->stream();
@@ -683,7 +697,7 @@ void CameraDevice::processCaptureRequest(camera3_capture_request_t *camera3Reque
if (camera3Request->num_output_buffers != 1) {
LOG(HAL, Error) << "Invalid number of output buffers: "
<< camera3Request->num_output_buffers;
- return;
+ return -EINVAL;
}
/* Start the camera if that's the first request we handle. */
@@ -691,7 +705,7 @@ void CameraDevice::processCaptureRequest(camera3_capture_request_t *camera3Reque
int ret = camera_->start();
if (ret) {
LOG(HAL, Error) << "Failed to start camera";
- return;
+ return ret;
}
running_ = true;
@@ -747,7 +761,7 @@ void CameraDevice::processCaptureRequest(camera3_capture_request_t *camera3Reque
if (!buffer) {
LOG(HAL, Error) << "Failed to create buffer";
delete descriptor;
- return;
+ return -ENOMEM;
}
Request *request =
@@ -757,14 +771,12 @@ void CameraDevice::processCaptureRequest(camera3_capture_request_t *camera3Reque
int ret = camera_->queueRequest(request);
if (ret) {
LOG(HAL, Error) << "Failed to queue request";
- goto error;
+ delete request;
+ delete descriptor;
+ return ret;
}
- return;
-
-error:
- delete request;
- delete descriptor;
+ return 0;
}
void CameraDevice::requestComplete(Request *request)
diff --git a/src/android/camera_device.h b/src/android/camera_device.h
index caa617dc..55eac317 100644
--- a/src/android/camera_device.h
+++ b/src/android/camera_device.h
@@ -13,7 +13,6 @@
#include <libcamera/buffer.h>
#include <libcamera/camera.h>
-#include <libcamera/object.h>
#include <libcamera/request.h>
#include <libcamera/stream.h>
@@ -21,19 +20,23 @@
class CameraMetadata;
-class CameraDevice : public libcamera::Object
+class CameraDevice
{
public:
CameraDevice(unsigned int id, const std::shared_ptr<libcamera::Camera> &camera);
~CameraDevice();
- int open();
+ int open(const hw_module_t *hardwareModule);
void close();
+
+ unsigned int id() const { return id_; }
+ camera3_device_t *camera3Device() { return &camera3Device_; }
+
void setCallbacks(const camera3_callback_ops_t *callbacks);
- camera_metadata_t *getStaticMetadata();
+ const camera_metadata_t *getStaticMetadata();
const camera_metadata_t *constructDefaultRequestSettings(int type);
int configureStreams(camera3_stream_configuration_t *stream_list);
- void processCaptureRequest(camera3_capture_request_t *request);
+ int processCaptureRequest(camera3_capture_request_t *request);
void requestComplete(libcamera::Request *request);
private:
@@ -52,6 +55,9 @@ private:
std::unique_ptr<CameraMetadata> getResultMetadata(int frame_number,
int64_t timestamp);
+ unsigned int id_;
+ camera3_device_t camera3Device_;
+
bool running_;
std::shared_ptr<libcamera::Camera> camera_;
std::unique_ptr<libcamera::CameraConfiguration> config_;
diff --git a/src/android/camera_hal_manager.cpp b/src/android/camera_hal_manager.cpp
index 22f0323b..5bd3bdba 100644
--- a/src/android/camera_hal_manager.cpp
+++ b/src/android/camera_hal_manager.cpp
@@ -12,7 +12,6 @@
#include "log.h"
#include "camera_device.h"
-#include "camera_proxy.h"
using namespace libcamera;
@@ -28,92 +27,67 @@ LOG_DECLARE_CATEGORY(HAL);
* their static information and to open camera devices.
*/
-CameraHalManager::~CameraHalManager()
+CameraHalManager::CameraHalManager()
+ : cameraManager_(nullptr)
{
- if (isRunning()) {
- exit(0);
- /* \todo Wait with a timeout, just in case. */
- wait();
- }
}
-int CameraHalManager::init()
+CameraHalManager::~CameraHalManager()
{
- /*
- * Start the camera HAL manager thread and wait until its
- * initialisation completes to be fully operational before
- * receiving calls from the camera stack.
- */
- start();
-
- MutexLocker locker(mutex_);
- cv_.wait(locker);
+ cameras_.clear();
- return 0;
+ if (cameraManager_) {
+ cameraManager_->stop();
+ delete cameraManager_;
+ cameraManager_ = nullptr;
+ }
}
-void CameraHalManager::run()
+int CameraHalManager::init()
{
- /*
- * All the libcamera components must be initialised here, in
- * order to bind them to the camera HAL manager thread that
- * executes the event dispatcher.
- */
cameraManager_ = new CameraManager();
int ret = cameraManager_->start();
if (ret) {
LOG(HAL, Error) << "Failed to start camera manager: "
<< strerror(-ret);
- return;
+ delete cameraManager_;
+ cameraManager_ = nullptr;
+ return ret;
}
/*
- * For each Camera registered in the system, a CameraProxy
- * gets created here to wraps a camera device.
+ * For each Camera registered in the system, a CameraDevice
+ * gets created here to wraps a libcamera Camera instance.
*
* \todo Support camera hotplug.
*/
unsigned int index = 0;
- for (auto &camera : cameraManager_->cameras()) {
- CameraProxy *proxy = new CameraProxy(index, camera);
- proxies_.emplace_back(proxy);
+ for (auto &cam : cameraManager_->cameras()) {
+ CameraDevice *camera = new CameraDevice(index, cam);
+ cameras_.emplace_back(camera);
++index;
}
- /*
- * libcamera has been initialized. Unlock the init() caller
- * as we're now ready to handle calls from the framework.
- */
- cv_.notify_one();
-
- /* Now start processing events and messages. */
- exec();
-
- /* Clean up the resources we have allocated. */
- proxies_.clear();
-
- cameraManager_->stop();
- delete cameraManager_;
- cameraManager_ = nullptr;
+ return 0;
}
-CameraProxy *CameraHalManager::open(unsigned int id,
- const hw_module_t *hardwareModule)
+CameraDevice *CameraHalManager::open(unsigned int id,
+ const hw_module_t *hardwareModule)
{
if (id >= numCameras()) {
LOG(HAL, Error) << "Invalid camera id '" << id << "'";
return nullptr;
}
- CameraProxy *proxy = proxies_[id].get();
- if (proxy->open(hardwareModule))
+ CameraDevice *camera = cameras_[id].get();
+ if (camera->open(hardwareModule))
return nullptr;
LOG(HAL, Info) << "Open camera '" << id << "'";
- return proxy;
+ return camera;
}
unsigned int CameraHalManager::numCameras() const
@@ -131,14 +105,14 @@ int CameraHalManager::getCameraInfo(unsigned int id, struct camera_info *info)
return -EINVAL;
}
- CameraProxy *proxy = proxies_[id].get();
+ CameraDevice *camera = cameras_[id].get();
/* \todo Get these info dynamically inspecting the camera module. */
info->facing = id ? CAMERA_FACING_FRONT : CAMERA_FACING_BACK;
info->orientation = 0;
info->device_version = 0;
info->resource_cost = 0;
- info->static_camera_characteristics = proxy->getStaticMetadata();
+ info->static_camera_characteristics = camera->getStaticMetadata();
info->conflicting_devices = nullptr;
info->conflicting_devices_length = 0;
diff --git a/src/android/camera_hal_manager.h b/src/android/camera_hal_manager.h
index c23abd1c..94d8f005 100644
--- a/src/android/camera_hal_manager.h
+++ b/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__ */
diff --git a/src/android/camera_ops.cpp b/src/android/camera_ops.cpp
new file mode 100644
index 00000000..9dfc2e65
--- /dev/null
+++ b/src/android/camera_ops.cpp
@@ -0,0 +1,96 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+/*
+ * Copyright (C) 2019, Google Inc.
+ *
+ * camera_ops.h - Android Camera HAL Operations
+ */
+
+#include "camera_ops.h"
+
+#include <system/camera_metadata.h>
+
+#include "camera_device.h"
+
+using namespace libcamera;
+
+/*
+ * Translatation layer between the Android Camera HAL device operations and the
+ * CameraDevice.
+ */
+
+static int hal_dev_initialize(const struct camera3_device *dev,
+ const camera3_callback_ops_t *callback_ops)
+{
+ if (!dev)
+ return -EINVAL;
+
+ CameraDevice *camera = reinterpret_cast<CameraDevice *>(dev->priv);
+ camera->setCallbacks(callback_ops);
+
+ return 0;
+}
+
+static int hal_dev_configure_streams(const struct camera3_device *dev,
+ camera3_stream_configuration_t *stream_list)
+{
+ if (!dev)
+ return -EINVAL;
+
+ CameraDevice *camera = reinterpret_cast<CameraDevice *>(dev->priv);
+ return camera->configureStreams(stream_list);
+}
+
+static const camera_metadata_t *
+hal_dev_construct_default_request_settings(const struct camera3_device *dev,
+ int type)
+{
+ if (!dev)
+ return nullptr;
+
+ CameraDevice *camera = reinterpret_cast<CameraDevice *>(dev->priv);
+ return camera->constructDefaultRequestSettings(type);
+}
+
+static int hal_dev_process_capture_request(const struct camera3_device *dev,
+ camera3_capture_request_t *request)
+{
+ if (!dev)
+ return -EINVAL;
+
+ CameraDevice *camera = reinterpret_cast<CameraDevice *>(dev->priv);
+ return camera->processCaptureRequest(request);
+}
+
+static void hal_dev_dump(const struct camera3_device *dev, int fd)
+{
+}
+
+static int hal_dev_flush(const struct camera3_device *dev)
+{
+ return 0;
+}
+
+int hal_dev_close(hw_device_t *hw_device)
+{
+ if (!hw_device)
+ return -EINVAL;
+
+ camera3_device_t *dev = reinterpret_cast<camera3_device_t *>(hw_device);
+ CameraDevice *camera = reinterpret_cast<CameraDevice *>(dev->priv);
+
+ camera->close();
+
+ return 0;
+}
+
+camera3_device_ops hal_dev_ops = {
+ .initialize = hal_dev_initialize,
+ .configure_streams = hal_dev_configure_streams,
+ .register_stream_buffers = nullptr,
+ .construct_default_request_settings = hal_dev_construct_default_request_settings,
+ .process_capture_request = hal_dev_process_capture_request,
+ .get_metadata_vendor_tag_ops = nullptr,
+ .dump = hal_dev_dump,
+ .flush = hal_dev_flush,
+ .reserved = { nullptr },
+};
diff --git a/src/android/camera_ops.h b/src/android/camera_ops.h
new file mode 100644
index 00000000..304e7b85
--- /dev/null
+++ b/src/android/camera_ops.h
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+/*
+ * Copyright (C) 2019, Google Inc.
+ *
+ * camera_ops.h - Android Camera HAL Operations
+ */
+#ifndef __ANDROID_CAMERA_OPS_H__
+#define __ANDROID_CAMERA_OPS_H__
+
+#include <hardware/camera3.h>
+
+int hal_dev_close(hw_device_t *hw_device);
+extern camera3_device_ops hal_dev_ops;
+
+#endif /* __ANDROID_CAMERA_OPS_H__ */
diff --git a/src/android/camera_proxy.cpp b/src/android/camera_proxy.cpp
deleted file mode 100644
index 3964b566..00000000
--- a/src/android/camera_proxy.cpp
+++ /dev/null
@@ -1,180 +0,0 @@
-/* SPDX-License-Identifier: LGPL-2.1-or-later */
-/*
- * Copyright (C) 2019, Google Inc.
- *
- * camera_proxy.cpp - Proxy to camera devices
- */
-
-#include "camera_proxy.h"
-
-#include <system/camera_metadata.h>
-
-#include <libcamera/object.h>
-
-#include "log.h"
-#include "message.h"
-#include "utils.h"
-
-#include "camera_device.h"
-
-using namespace libcamera;
-
-LOG_DECLARE_CATEGORY(HAL);
-
-/*
- * \class CameraProxy
- *
- * The CameraProxy wraps a CameraDevice and implements the camera3_device_t
- * API, bridging calls received from the camera framework to the CameraDevice.
- *
- * Bridging operation calls between the framework and the CameraDevice is
- * required as the two run in two different threads and certain operations,
- * such as queueing a new capture request to the camera, shall be called in
- * the thread that dispatches events. Other operations do not require any
- * bridging and resolve to direct function calls on the CameraDevice instance
- * instead.
- */
-
-static int hal_dev_initialize(const struct camera3_device *dev,
- const camera3_callback_ops_t *callback_ops)
-{
- if (!dev)
- return -EINVAL;
-
- CameraProxy *proxy = reinterpret_cast<CameraProxy *>(dev->priv);
- proxy->initialize(callback_ops);
-
- return 0;
-}
-
-static int hal_dev_configure_streams(const struct camera3_device *dev,
- camera3_stream_configuration_t *stream_list)
-{
- if (!dev)
- return -EINVAL;
-
- CameraProxy *proxy = reinterpret_cast<CameraProxy *>(dev->priv);
- return proxy->configureStreams(stream_list);
-}
-
-static const camera_metadata_t *
-hal_dev_construct_default_request_settings(const struct camera3_device *dev,
- int type)
-{
- if (!dev)
- return nullptr;
-
- CameraProxy *proxy = reinterpret_cast<CameraProxy *>(dev->priv);
- return proxy->constructDefaultRequestSettings(type);
-}
-
-static int hal_dev_process_capture_request(const struct camera3_device *dev,
- camera3_capture_request_t *request)
-{
- if (!dev)
- return -EINVAL;
-
- CameraProxy *proxy = reinterpret_cast<CameraProxy *>(dev->priv);
- return proxy->processCaptureRequest(request);
-}
-
-static void hal_dev_dump(const struct camera3_device *dev, int fd)
-{
-}
-
-static int hal_dev_flush(const struct camera3_device *dev)
-{
- return 0;
-}
-
-static int hal_dev_close(hw_device_t *hw_device)
-{
- if (!hw_device)
- return -EINVAL;
-
- camera3_device_t *dev = reinterpret_cast<camera3_device_t *>(hw_device);
- CameraProxy *proxy = reinterpret_cast<CameraProxy *>(dev->priv);
-
- proxy->close();
-
- return 0;
-}
-
-static camera3_device_ops hal_dev_ops = {
- .initialize = hal_dev_initialize,
- .configure_streams = hal_dev_configure_streams,
- .register_stream_buffers = nullptr,
- .construct_default_request_settings = hal_dev_construct_default_request_settings,
- .process_capture_request = hal_dev_process_capture_request,
- .get_metadata_vendor_tag_ops = nullptr,
- .dump = hal_dev_dump,
- .flush = hal_dev_flush,
- .reserved = { nullptr },
-};
-
-CameraProxy::CameraProxy(unsigned int id, const std::shared_ptr<Camera> &camera)
- : id_(id)
-{
- cameraDevice_ = new CameraDevice(id, camera);
-}
-
-CameraProxy::~CameraProxy()
-{
- delete cameraDevice_;
-}
-
-int CameraProxy::open(const hw_module_t *hardwareModule)
-{
- int ret = cameraDevice_->open();
- if (ret)
- return ret;
-
- /* Initialize the hw_device_t in the instance camera3_module_t. */
- camera3Device_.common.tag = HARDWARE_DEVICE_TAG;
- camera3Device_.common.version = CAMERA_DEVICE_API_VERSION_3_3;
- camera3Device_.common.module = (hw_module_t *)hardwareModule;
- camera3Device_.common.close = hal_dev_close;
-
- /*
- * The camera device operations. These actually implement
- * the Android Camera HALv3 interface.
- */
- camera3Device_.ops = &hal_dev_ops;
- camera3Device_.priv = this;
-
- return 0;
-}
-
-void CameraProxy::close()
-{
- cameraDevice_->invokeMethod(&CameraDevice::close,
- ConnectionTypeBlocking);
-}
-
-void CameraProxy::initialize(const camera3_callback_ops_t *callbacks)
-{
- cameraDevice_->setCallbacks(callbacks);
-}
-
-const camera_metadata_t *CameraProxy::getStaticMetadata()
-{
- return cameraDevice_->getStaticMetadata();
-}
-
-const camera_metadata_t *CameraProxy::constructDefaultRequestSettings(int type)
-{
- return cameraDevice_->constructDefaultRequestSettings(type);
-}
-
-int CameraProxy::configureStreams(camera3_stream_configuration_t *stream_list)
-{
- return cameraDevice_->configureStreams(stream_list);
-}
-
-int CameraProxy::processCaptureRequest(camera3_capture_request_t *request)
-{
- cameraDevice_->invokeMethod(&CameraDevice::processCaptureRequest,
- ConnectionTypeBlocking, request);
-
- return 0;
-}
diff --git a/src/android/camera_proxy.h b/src/android/camera_proxy.h
deleted file mode 100644
index e8cfbc9d..00000000
--- a/src/android/camera_proxy.h
+++ /dev/null
@@ -1,42 +0,0 @@
-/* SPDX-License-Identifier: LGPL-2.1-or-later */
-/*
- * Copyright (C) 2019, Google Inc.
- *
- * camera_proxy.h - Proxy to camera devices
- */
-#ifndef __ANDROID_CAMERA_PROXY_H__
-#define __ANDROID_CAMERA_PROXY_H__
-
-#include <memory>
-
-#include <hardware/camera3.h>
-
-#include <libcamera/camera.h>
-
-class CameraDevice;
-
-class CameraProxy
-{
-public:
- CameraProxy(unsigned int id, const std::shared_ptr<libcamera::Camera> &camera);
- ~CameraProxy();
-
- int open(const hw_module_t *hardwareModule);
- void close();
-
- void initialize(const camera3_callback_ops_t *callbacks);
- const camera_metadata_t *getStaticMetadata();
- const camera_metadata_t *constructDefaultRequestSettings(int type);
- int configureStreams(camera3_stream_configuration_t *stream_list);
- int processCaptureRequest(camera3_capture_request_t *request);
-
- unsigned int id() const { return id_; }
- camera3_device_t *camera3Device() { return &camera3Device_; }
-
-private:
- unsigned int id_;
- CameraDevice *cameraDevice_;
- camera3_device_t camera3Device_;
-};
-
-#endif /* __ANDROID_CAMERA_PROXY_H__ */
diff --git a/src/android/meson.build b/src/android/meson.build
index 70dfcc1d..5a5a332e 100644
--- a/src/android/meson.build
+++ b/src/android/meson.build
@@ -3,7 +3,7 @@ android_hal_sources = files([
'camera_hal_manager.cpp',
'camera_device.cpp',
'camera_metadata.cpp',
- 'camera_proxy.cpp',
+ 'camera_ops.cpp',
])
android_camera_metadata_sources = files([