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authorLaurent Pinchart <laurent.pinchart@ideasonboard.com>2024-02-26 05:40:59 +0200
committerLaurent Pinchart <laurent.pinchart@ideasonboard.com>2024-03-15 12:54:47 +0200
commit1a1cf4a2c13a04f23593419ce93e97f9a5bb22d1 (patch)
treece9be8479a8582ed57efae98305ce19d3ac137ce /src/android/data
parent3777d80acc863a19e1d0847d14f4ae86905fb76b (diff)
libcamera: v4l2_subdevice: Add code member to MediaBusFormatInfo
To prepare for exposing the MediaBusFormatInfo structure as an internal API, add a code member to the structure to store the media bus code. This makes MediaBusFormatInfo usable standalone, without having to externally associate the code related to the info. The entries in the mediaBusFormatInfo map are becoming too long, so split them on multiple lines. While at it, swap the order of the members to match the PixelFormatInfo class for consistency. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Diffstat (limited to 'src/android/data')
0 files changed, 0 insertions, 0 deletions
generated by cgit v1.2.1 (git 2.18.0) at 2025-05-05 05:39:02 +0000
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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
 * Copyright (C) 2021, Google Inc.
 *
 * 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;
	numPlanes_ = bufferManager_->GetNumPlanes(camera3Buffer);
}

CameraBuffer::Private::~Private()
{
	int ret;
	if (mapped_) {
		ret = bufferManager_->Unlock(handle_);
		if (ret != 0)
			LOG(HAL, Error) << "Failed to unlock buffer: "
					<< strerror(-ret);
	}

	if (registered_) {
		ret = bufferManager_->Deregister(handle_);
		if (ret != 0)
			LOG(HAL, Error) << "Failed to deregister buffer: "
					<< strerror(-ret);
	}
}

unsigned int CameraBuffer::Private::numPlanes() const
{
	return bufferManager_->GetNumPlanes(handle_);
}

Span<uint8_t> CameraBuffer::Private::plane(unsigned int plane)
{
	if (!mapped_)
		map();
	if (!mapped_)
		return {};

	void *addr;