index : libcamera/libcamera.git	master
	libcamera official repository	git repository hosting on libcamera.org

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Mode	Name	Size
d---------	android	563	logplain
d---------	cam	431	logplain
d---------	ipa	80	logplain
d---------	libcamera	1774	logplain
-rw-r--r--	meson.build	117	logplain
d---------	qcam	435	logplain

generated by cgit v1.2.1 (git 2.18.0) at 2025-05-28 05:56:16 +0000

/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
 * Copyright (C) 2019, Google Inc.
 *
 * camera3_hal.cpp - Android Camera HALv3 module
 */

#include <hardware/camera_common.h>

#include <libcamera/base/log.h>

#include "camera_device.h"
#include "camera_hal_manager.h"

using namespace libcamera;

LOG_DEFINE_CATEGORY(HAL)

/*------------------------------------------------------------------------------
 * Android Camera HAL callbacks
 */

static int hal_get_number_of_cameras()
{
	return CameraHalManager::instance()->numCameras();
}

static int hal_get_camera_info(int id, struct camera_info *info)
{
	return CameraHalManager::instance()->getCameraInfo(id, info);
}

static int hal_set_callbacks(const camera_module_callbacks_t *callbacks)
{
	CameraHalManager::instance()->setCallbacks(callbacks);

	return 0;
}

static int hal_open_legacy([[maybe_unused]] const struct hw_module_t *module,
			   [[maybe_unused]] const char *id,
			   [[maybe_unused]] uint32_t halVersion,
			   [[maybe_unused]] struct hw_device_t **device)
{
	return -ENOSYS;
}

static int hal_set_torch_mode([[maybe_unused]] const char *camera_id,
			      [[maybe_unused]] bool enabled)
{
	return -ENOSYS;
}

/*
 * First entry point of the camera HAL module.
 *
 * Initialize the HAL but does not open any camera device yet (see hal_dev_open)
 */
static int hal_init()
{
	LOG(HAL, Info) << "Initialising Android camera HAL";

	CameraHalManager::instance()->init();

	return 0;
}

/*------------------------------------------------------------------------------
 * Android Camera Device
 */

static int hal_dev_open(const hw_module_t *module, const char *name,
			hw_device_t **device)
{
	LOG(HAL, Debug) << "Open camera " << name;

	int id = atoi(name);

	auto [camera, ret] = CameraHalManager::instance()->open(id, module);
	if (!camera) {
		LOG(HAL, Error)
			<< "Failed to open camera module '" << id << "'";
		return ret == -EBUSY ? -EUSERS : ret;
	}

	*device = &camera->camera3Device()->common;

	return 0;
}

static struct hw_module_methods_t hal_module_methods = {
	.open = hal_dev_open,
};