blob: 909a1d82fb504c82e9e98d9e18151ebfa79f5c0b [file] [log] [blame]
/* Copyright 2016 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef HAL_USB_METADATA_HANDLER_H_
#define HAL_USB_METADATA_HANDLER_H_
#include <memory>
#include <base/threading/thread_checker.h>
#include <camera/camera_metadata.h>
#include <hardware/camera3.h>
#include "hal/usb/common_types.h"
namespace cros {
struct CameraMetadataDeleter {
inline void operator()(camera_metadata_t* metadata) const {
free_camera_metadata(metadata);
}
};
typedef std::unique_ptr<camera_metadata_t, CameraMetadataDeleter>
CameraMetadataUniquePtr;
// MetadataHandler is thread-safe. It is used for saving metadata states of
// CameraDevice.
class MetadataHandler {
public:
explicit MetadataHandler(const camera_metadata_t& metadata);
~MetadataHandler();
static int FillDefaultMetadata(android::CameraMetadata* metadata);
static int FillMetadataFromSupportedFormats(
const SupportedFormats& supported_formats,
android::CameraMetadata* metadata);
static int FillMetadataFromDeviceInfo(const DeviceInfo& device_info,
android::CameraMetadata* metadata);
// Get default settings according to the |template_type|. Can be called on
// any thread.
const camera_metadata_t* GetDefaultRequestSettings(int template_type);
// PreHandleRequest and PostHandleRequest should run on the same thread.
// Called before the request is processed. This function is used for checking
// metadata values to setup related states and image settings.
void PreHandleRequest(int frame_number,
const android::CameraMetadata& metadata);
// Called after the request is processed. This function is used to update
// required metadata which can be gotton from 3A or image processor.
int PostHandleRequest(int frame_number,
int64_t timestamp,
android::CameraMetadata* metadata);
private:
// Check |template_type| is valid or not.
bool IsValidTemplateType(int template_type);
// Return a copy of metadata according to |template_type|.
CameraMetadataUniquePtr CreateDefaultRequestSettings(int template_type);
int FillDefaultPreviewSettings(android::CameraMetadata* metadata);
int FillDefaultStillCaptureSettings(android::CameraMetadata* metadata);
int FillDefaultVideoRecordSettings(android::CameraMetadata* metadata);
int FillDefaultVideoSnapshotSettings(android::CameraMetadata* metadata);
int FillDefaultZeroShutterLagSettings(android::CameraMetadata* metadata);
int FillDefaultManualSettings(android::CameraMetadata* metadata);
// Metadata containing persistent camera characteristics.
android::CameraMetadata metadata_;
// Static array of standard camera settings templates. These are owned by
// CameraClient.
CameraMetadataUniquePtr template_settings_[CAMERA3_TEMPLATE_COUNT];
// Use to check PreHandleRequest and PostHandleRequest are called on the same
// thread.
base::ThreadChecker thread_checker_;
int current_frame_number_;
bool af_trigger_;
};
} // namespace cros
#endif // HAL_USB_METADATA_HANDLER_H_