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/* Spa libcamera client
*
* Copyright (C) 2020, Collabora Ltd.
* Author: Raghavendra Rao Sidlagatta <raghavendra.rao@collabora.com>
*
* libcamera-client.c
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include <errno.h>
#include <stddef.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <spa/support/log.h>
#include <spa/support/loop.h>
#include <spa/support/plugin.h>
#include <spa/utils/type.h>
#include <spa/utils/keys.h>
#include <spa/utils/names.h>
#include <spa/utils/string.h>
#include <spa/monitor/device.h>
#include <spa/monitor/utils.h>
#include "libcamera.h"
struct impl {
struct spa_handle handle;
struct spa_device device;
struct spa_log *log;
struct spa_loop *main_loop;
struct spa_hook_list hooks;
uint64_t info_all;
struct spa_device_info info;
struct spa_source source;
};
static int emit_object_info(struct impl *this, uint32_t id)
{
struct spa_device_object_info info;
struct spa_dict_item items[20];
uint32_t n_items = 0;
info = SPA_DEVICE_OBJECT_INFO_INIT();
info.type = SPA_TYPE_INTERFACE_Device;
info.factory_name = SPA_NAME_API_LIBCAMERA_DEVICE;
info.change_mask = (SPA_DEVICE_OBJECT_CHANGE_MASK_FLAGS |
SPA_DEVICE_OBJECT_CHANGE_MASK_PROPS);
info.flags = 0;
items[n_items++] = SPA_DICT_ITEM_INIT(SPA_KEY_DEVICE_ENUM_API,"libcamera-client");
items[n_items++] = SPA_DICT_ITEM_INIT(SPA_KEY_DEVICE_API, "libcamera");
items[n_items++] = SPA_DICT_ITEM_INIT(SPA_KEY_MEDIA_CLASS, "Video/Device");
info.props = &SPA_DICT_INIT(items, n_items);
spa_device_emit_object_info(&this->hooks, id, &info);
return 1;
}
static const struct spa_dict_item device_info_items[] = {
{ SPA_KEY_DEVICE_API, "libcamera" },
{ SPA_KEY_DEVICE_NICK, "libcamera-client" },
{ SPA_KEY_API_UDEV_MATCH, "libcamera" },
};
static void emit_device_info(struct impl *this, bool full)
{
uint64_t old = full ? this->info.change_mask : 0;
if (full)
this->info.change_mask = this->info_all;
if (this->info.change_mask) {
this->info.props = &SPA_DICT_INIT_ARRAY(device_info_items);
spa_device_emit_info(&this->hooks, &this->info);
this->info.change_mask = old;
}
}
static void impl_hook_removed(struct spa_hook *hook)
{
return;
}
static int
impl_device_add_listener(void *object, struct spa_hook *listener,
const struct spa_device_events *events, void *data)
{
struct impl *this = object;
struct spa_hook_list save;
spa_return_val_if_fail(this != NULL, -EINVAL);
spa_return_val_if_fail(events != NULL, -EINVAL);
spa_hook_list_isolate(&this->hooks, &save, listener, events, data);
emit_device_info(this, true);
emit_object_info(this, 0);
spa_hook_list_join(&this->hooks, &save);
listener->removed = impl_hook_removed;
listener->priv = this;
return 0;
}
static const struct spa_device_methods impl_device = {
SPA_VERSION_DEVICE_METHODS,
.add_listener = impl_device_add_listener,
};
static int impl_get_interface(struct spa_handle *handle, const char *type, void **interface)
{
struct impl *this;
spa_return_val_if_fail(handle != NULL, -EINVAL);
spa_return_val_if_fail(interface != NULL, -EINVAL);
this = (struct impl *) handle;
if (spa_streq(type, SPA_TYPE_INTERFACE_Device))
*interface = &this->device;
else
return -ENOENT;
return 0;
}
static int impl_clear(struct spa_handle *handle)
{
struct impl *this = (struct impl *) handle;
if(this->dev.camera) {
deleteLibCamera(this->dev.camera);
this->dev.camera = NULL;
}
return 0;
}
static size_t
impl_get_size(const struct spa_handle_factory *factory,
const struct spa_dict *params)
{
return sizeof(struct impl);
}
static int
impl_init(const struct spa_handle_factory *factory,
struct spa_handle *handle,
const struct spa_dict *info,
const struct spa_support *support,
uint32_t n_support)
{
struct impl *this;
spa_return_val_if_fail(factory != NULL, -EINVAL);
spa_return_val_if_fail(handle != NULL, -EINVAL);
handle->get_interface = impl_get_interface;
handle->clear = impl_clear;
this = (struct impl *) handle;
this->log = spa_support_find(support, n_support, SPA_TYPE_INTERFACE_Log);
libcamera_log_topic_init(this->log);
this->main_loop = spa_support_find(support, n_support, SPA_TYPE_INTERFACE_Loop);
if (this->main_loop == NULL) {
spa_log_error(this->log, "a main-loop is needed");
return -EINVAL;
}
spa_hook_list_init(&this->hooks);
this->device.iface = SPA_INTERFACE_INIT(
SPA_TYPE_INTERFACE_Device,
SPA_VERSION_DEVICE,
&impl_device, this);
this->info = SPA_DEVICE_INFO_INIT();
this->info_all = SPA_DEVICE_CHANGE_MASK_FLAGS |
SPA_DEVICE_CHANGE_MASK_PROPS;
this->info.flags = 0;
if(this->dev.camera == NULL)
this->dev.camera = (LibCamera*)newLibCamera();
if(this->dev.camera != NULL)
libcamera_set_log(this->dev.camera, this->dev.log);
return 0;
}
static const struct spa_interface_info impl_interfaces[] = {
{SPA_TYPE_INTERFACE_Device,},
};
static int
impl_enum_interface_info(const struct spa_handle_factory *factory,
const struct spa_interface_info **info,
uint32_t *index)
{
spa_return_val_if_fail(factory != NULL, -EINVAL);
spa_return_val_if_fail(info != NULL, -EINVAL);
spa_return_val_if_fail(index != NULL, -EINVAL);
if (*index >= SPA_N_ELEMENTS(impl_interfaces))
return 0;
*info = &impl_interfaces[(*index)++];
return 1;
}
const struct spa_handle_factory spa_libcamera_client_factory = {
SPA_VERSION_HANDLE_FACTORY,
SPA_NAME_API_LIBCAMERA_ENUM_CLIENT,
NULL,
impl_get_size,
impl_init,
impl_enum_interface_info,
};
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