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path: root/test

/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
 * Copyright (C) 2021, Google Inc.
 *
 * cros_camera_buffer.cpp - Chromium OS buffer backend using CameraBufferManager
 */

#include "../camera_buffer.h"

#include <libcamera/base/log.h>

#include "cros-camera/camera_buffer_manager.h"

using namespace libcamera;

LOG_DECLARE_CATEGORY(HAL)

class CameraBuffer::Private : public Extensible::Private
{
	LIBCAMERA_DECLARE_PUBLIC(CameraBuffer)

public:
	Private(CameraBuffer *cameraBuffer, buffer_handle_t camera3Buffer,
		PixelFormat pixelFormat, const Size &size,
		int flags);
	~Private();

	bool isValid() const { return registered_; }

	unsigned int numPlanes() const;

	Span<uint8_t> plane(unsigned int plane);

	unsigned int stride(unsigned int plane) const;
	unsigned int offset(unsigned int plane) const;
	unsigned int size(unsigned int plane) const;

	size_t jpegBufferSize(size_t maxJpegBufferSize) const;

private:
	void map();

	cros::CameraBufferManager *bufferManager_;
	buffer_handle_t handle_;
	unsigned int numPlanes_;
	bool mapped_;
	bool registered_;
	union {
		void *addr;
		android_ycbcr ycbcr;
	} mem;
};

CameraBuffer::Private::Private([[maybe_unused]] CameraBuffer *cameraBuffer,
			       buffer_handle_t camera3Buffer,
			       [[maybe_unused]] PixelFormat pixelFormat,
			       [[maybe_unused]] const Size &size,
			       [[maybe_unused]] int flags)
	: handle_(camera3Buffer), numPlanes_(0), mapped_(false),
	  registered_(false)
{
	bufferManager_ = cros::CameraBufferManager::GetInstance();
	if (!bufferManager_) {
		LOG(HAL, Fatal)
			<< "Failed to get cros CameraBufferManager instance";
		return;
	}

	int ret = bufferManager_->Register(camera3Buffer);
	if (ret) {
		LOG(HAL, Error) << "Failed registering a buffer: " << ret;
		return;
	}

	registered_ = true;