diff options
Diffstat (limited to 'spa/plugins/libcamera')
| -rw-r--r-- | spa/plugins/libcamera/libcamera-client.c | 247 | ||||
| -rw-r--r-- | spa/plugins/libcamera/libcamera-device.cpp | 332 | ||||
| -rw-r--r-- | spa/plugins/libcamera/libcamera-manager.cpp | 488 | ||||
| -rw-r--r-- | spa/plugins/libcamera/libcamera-manager.hpp | 29 | ||||
| -rw-r--r-- | spa/plugins/libcamera/libcamera-source.cpp | 1073 | ||||
| -rw-r--r-- | spa/plugins/libcamera/libcamera-utils.cpp | 990 | ||||
| -rw-r--r-- | spa/plugins/libcamera/libcamera.c | 57 | ||||
| -rw-r--r-- | spa/plugins/libcamera/libcamera.h | 51 | ||||
| -rw-r--r-- | spa/plugins/libcamera/meson.build | 17 |
9 files changed, 3284 insertions, 0 deletions
diff --git a/spa/plugins/libcamera/libcamera-client.c b/spa/plugins/libcamera/libcamera-client.c new file mode 100644 index 0000000..a31a41f --- /dev/null +++ b/spa/plugins/libcamera/libcamera-client.c @@ -0,0 +1,247 @@ +/* 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, +}; diff --git a/spa/plugins/libcamera/libcamera-device.cpp b/spa/plugins/libcamera/libcamera-device.cpp new file mode 100644 index 0000000..ff206a4 --- /dev/null +++ b/spa/plugins/libcamera/libcamera-device.cpp @@ -0,0 +1,332 @@ +/* Spa libcamera Device + * + * Copyright (C) 2020, Collabora Ltd. + * Author: Raghavendra Rao Sidlagatta <raghavendra.rao@collabora.com> + * Copyright (C) 2021 Wim Taymans <wim.taymans@gmail.com> + * + * libcamera-device.cpp + * + * 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 <stddef.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> + +#include <sys/ioctl.h> + +#include <spa/support/plugin.h> +#include <spa/support/log.h> +#include <spa/support/loop.h> +#include <spa/utils/keys.h> +#include <spa/utils/result.h> +#include <spa/utils/names.h> +#include <spa/utils/string.h> +#include <spa/node/node.h> +#include <spa/pod/builder.h> +#include <spa/monitor/device.h> +#include <spa/monitor/utils.h> +#include <spa/param/param.h> + +#include "libcamera.h" +#include "libcamera-manager.hpp" + +#include <libcamera/camera.h> +#include <libcamera/property_ids.h> + +using namespace libcamera; + +namespace { + +struct impl { + struct spa_handle handle; + struct spa_device device = {}; + + struct spa_log *log; + + std::string device_id; + + struct spa_hook_list hooks; + + std::shared_ptr<CameraManager> manager; + std::shared_ptr<Camera> camera; + + impl(spa_log *log, + std::shared_ptr<CameraManager> manager, + std::shared_ptr<Camera> camera, + std::string device_id); +}; + +} + +static std::string cameraModel(const Camera *camera) +{ + const ControlList &props = camera->properties(); + + if (auto model = props.get(properties::Model)) + return std::move(model.value()); + + return camera->id(); +} + +static const char *cameraLoc(const Camera *camera) +{ + const ControlList &props = camera->properties(); + + if (auto location = props.get(properties::Location)) { + switch (location.value()) { + case properties::CameraLocationFront: + return "front"; + case properties::CameraLocationBack: + return "back"; + case properties::CameraLocationExternal: + return "external"; + } + } + + return nullptr; +} + +static int emit_info(struct impl *impl, bool full) +{ + struct spa_dict_item items[10]; + struct spa_dict dict; + uint32_t n_items = 0; + struct spa_device_info info; + struct spa_param_info params[2]; + char path[256], model[256], name[256]; + + info = SPA_DEVICE_INFO_INIT(); + + info.change_mask = SPA_DEVICE_CHANGE_MASK_PROPS; + +#define ADD_ITEM(key, value) items[n_items++] = SPA_DICT_ITEM_INIT(key, value) + snprintf(path, sizeof(path), "libcamera:%s", impl->device_id.c_str()); + ADD_ITEM(SPA_KEY_OBJECT_PATH, path); + ADD_ITEM(SPA_KEY_DEVICE_API, "libcamera"); + ADD_ITEM(SPA_KEY_MEDIA_CLASS, "Video/Device"); + ADD_ITEM(SPA_KEY_API_LIBCAMERA_PATH, impl->device_id.c_str()); + + if (auto location = cameraLoc(impl->camera.get())) + ADD_ITEM(SPA_KEY_API_LIBCAMERA_LOCATION, location); + + snprintf(model, sizeof(model), "%s", cameraModel(impl->camera.get()).c_str()); + ADD_ITEM(SPA_KEY_DEVICE_PRODUCT_NAME, model); + ADD_ITEM(SPA_KEY_DEVICE_DESCRIPTION, model); + snprintf(name, sizeof(name), "libcamera_device.%s", impl->device_id.c_str()); + ADD_ITEM(SPA_KEY_DEVICE_NAME, name); +#undef ADD_ITEM + + dict = SPA_DICT_INIT(items, n_items); + info.props = &dict; + + info.change_mask |= SPA_DEVICE_CHANGE_MASK_PARAMS; + params[0] = SPA_PARAM_INFO(SPA_PARAM_EnumProfile, SPA_PARAM_INFO_READ); + params[1] = SPA_PARAM_INFO(SPA_PARAM_Profile, SPA_PARAM_INFO_WRITE); + info.n_params = SPA_N_ELEMENTS(params); + info.params = params; + + spa_device_emit_info(&impl->hooks, &info); + + if (true) { + struct spa_device_object_info oinfo; + + oinfo = SPA_DEVICE_OBJECT_INFO_INIT(); + oinfo.type = SPA_TYPE_INTERFACE_Node; + oinfo.factory_name = SPA_NAME_API_LIBCAMERA_SOURCE; + oinfo.change_mask = SPA_DEVICE_OBJECT_CHANGE_MASK_PROPS; + oinfo.props = &dict; + + spa_device_emit_object_info(&impl->hooks, 0, &oinfo); + } + return 0; +} + +static int impl_add_listener(void *object, + struct spa_hook *listener, + const struct spa_device_events *events, + void *data) +{ + struct impl *impl = (struct impl*)object; + struct spa_hook_list save; + int res = 0; + + spa_return_val_if_fail(impl != NULL, -EINVAL); + spa_return_val_if_fail(events != NULL, -EINVAL); + + spa_hook_list_isolate(&impl->hooks, &save, listener, events, data); + + if (events->info || events->object_info) + res = emit_info(impl, true); + + spa_hook_list_join(&impl->hooks, &save); + + return res; +} + +static int impl_sync(void *object, int seq) +{ + struct impl *impl = (struct impl*) object; + + spa_return_val_if_fail(impl != NULL, -EINVAL); + + spa_device_emit_result(&impl->hooks, seq, 0, 0, NULL); + + return 0; +} + +static int impl_enum_params(void *object, int seq, + uint32_t id, uint32_t start, uint32_t num, + const struct spa_pod *filter) +{ + return -ENOTSUP; +} + +static int impl_set_param(void *object, + uint32_t id, uint32_t flags, + const struct spa_pod *param) +{ + return -ENOTSUP; +} + +static const struct spa_device_methods impl_device = { + SPA_VERSION_DEVICE_METHODS, + .add_listener = impl_add_listener, + .sync = impl_sync, + .enum_params = impl_enum_params, + .set_param = impl_set_param, +}; + +static int impl_get_interface(struct spa_handle *handle, const char *type, void **interface) +{ + struct impl *impl; + + spa_return_val_if_fail(handle != NULL, -EINVAL); + spa_return_val_if_fail(interface != NULL, -EINVAL); + + impl = (struct impl *) handle; + + if (spa_streq(type, SPA_TYPE_INTERFACE_Device)) + *interface = &impl->device; + else + return -ENOENT; + + return 0; +} + +static int impl_clear(struct spa_handle *handle) +{ + std::destroy_at(reinterpret_cast<impl *>(handle)); + return 0; +} + +impl::impl(spa_log *log, + std::shared_ptr<CameraManager> manager, + std::shared_ptr<Camera> camera, + std::string device_id) + : handle({ SPA_VERSION_HANDLE, impl_get_interface, impl_clear }), + log(log), + device_id(std::move(device_id)), + manager(std::move(manager)), + camera(std::move(camera)) +{ + libcamera_log_topic_init(log); + + spa_hook_list_init(&hooks); + + device.iface = SPA_INTERFACE_INIT( + SPA_TYPE_INTERFACE_Device, + SPA_VERSION_DEVICE, + &impl_device, this); +} + +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) +{ + const char *str; + int res; + + spa_return_val_if_fail(factory != NULL, -EINVAL); + spa_return_val_if_fail(handle != NULL, -EINVAL); + + auto log = static_cast<spa_log *>(spa_support_find(support, n_support, SPA_TYPE_INTERFACE_Log)); + + auto manager = libcamera_manager_acquire(res); + if (!manager) { + spa_log_error(log, "can't start camera manager: %s", spa_strerror(res)); + return res; + } + + std::string device_id; + if (info && (str = spa_dict_lookup(info, SPA_KEY_API_LIBCAMERA_PATH))) + device_id = str; + + auto camera = manager->get(device_id); + if (!camera) { + spa_log_error(log, "unknown camera id %s", device_id.c_str()); + return -ENOENT; + } + + new (handle) impl(log, std::move(manager), std::move(camera), std::move(device_id)); + + 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; +} + +extern "C" { +const struct spa_handle_factory spa_libcamera_device_factory = { + SPA_VERSION_HANDLE_FACTORY, + SPA_NAME_API_LIBCAMERA_DEVICE, + NULL, + impl_get_size, + impl_init, + impl_enum_interface_info, +}; +} diff --git a/spa/plugins/libcamera/libcamera-manager.cpp b/spa/plugins/libcamera/libcamera-manager.cpp new file mode 100644 index 0000000..afba403 --- /dev/null +++ b/spa/plugins/libcamera/libcamera-manager.cpp @@ -0,0 +1,488 @@ +/* Spa libcamera manager + * + * Copyright © 2021 Wim Taymans + * + * 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 <stddef.h> +#include <stdio.h> +#include <unistd.h> +#include <limits.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <utility> +#include <mutex> +#include <optional> +#include <queue> + +#include <libcamera/camera.h> +#include <libcamera/camera_manager.h> + +#include <linux/videodev2.h> + +using namespace libcamera; + +#include <spa/support/log.h> +#include <spa/utils/type.h> +#include <spa/utils/keys.h> +#include <spa/utils/names.h> +#include <spa/utils/result.h> +#include <spa/utils/string.h> +#include <spa/support/loop.h> +#include <spa/support/plugin.h> +#include <spa/monitor/device.h> +#include <spa/monitor/utils.h> + +#include "libcamera.h" +#include "libcamera-manager.hpp" + +#define MAX_DEVICES 64 + +namespace { + +struct device { + uint32_t id; + std::shared_ptr<Camera> camera; +}; + +struct impl { + struct spa_handle handle; + struct spa_device device = {}; + + struct spa_log *log; + struct spa_loop_utils *loop_utils; + + struct spa_hook_list hooks; + + static constexpr uint64_t info_all = SPA_DEVICE_CHANGE_MASK_FLAGS | SPA_DEVICE_CHANGE_MASK_PROPS; + struct spa_device_info info = SPA_DEVICE_INFO_INIT(); + + std::shared_ptr<CameraManager> manager; + void addCamera(std::shared_ptr<libcamera::Camera> camera); + void removeCamera(std::shared_ptr<libcamera::Camera> camera); + + struct device devices[MAX_DEVICES]; + uint32_t n_devices = 0; + + struct hotplug_event { + enum class type { add, remove } type; + std::shared_ptr<Camera> camera; + }; + + std::mutex hotplug_events_lock; + std::queue<hotplug_event> hotplug_events; + struct spa_source *hotplug_event_source; + + impl(spa_log *log, spa_loop_utils *loop_utils, spa_source *hotplug_event_source); + + ~impl() + { + spa_loop_utils_destroy_source(loop_utils, hotplug_event_source); + } +}; + +} + +static std::weak_ptr<CameraManager> global_manager; + +std::shared_ptr<CameraManager> libcamera_manager_acquire(int& res) +{ + if (auto manager = global_manager.lock()) + return manager; + + auto manager = std::make_shared<CameraManager>(); + if ((res = manager->start()) < 0) + return {}; + + global_manager = manager; + + return manager; +} +static uint32_t get_free_id(struct impl *impl) +{ + for (std::size_t i = 0; i < MAX_DEVICES; i++) + if (impl->devices[i].camera == nullptr) + return i; + return 0; +} + +static struct device *add_device(struct impl *impl, std::shared_ptr<Camera> camera) +{ + struct device *device; + uint32_t id; + + if (impl->n_devices >= MAX_DEVICES) + return NULL; + id = get_free_id(impl);; + device = &impl->devices[id]; + device->id = get_free_id(impl);; + device->camera = std::move(camera); + impl->n_devices++; + return device; +} + +static struct device *find_device(struct impl *impl, const Camera *camera) +{ + uint32_t i; + for (i = 0; i < impl->n_devices; i++) { + if (impl->devices[i].camera.get() == camera) + return &impl->devices[i]; + } + return NULL; +} + +static void remove_device(struct impl *impl, struct device *device) +{ + uint32_t old = --impl->n_devices; + device->camera.reset(); + *device = std::move(impl->devices[old]); + impl->devices[old].camera = nullptr; +} + +static void clear_devices(struct impl *impl) +{ + while (impl->n_devices > 0) + impl->devices[--impl->n_devices].camera.reset(); +} + +static int emit_object_info(struct impl *impl, struct device *device) +{ + struct spa_device_object_info info; + uint32_t id = device->id; + struct spa_dict_item items[20]; + struct spa_dict dict; + uint32_t n_items = 0; + char path[256]; + + 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; + +#define ADD_ITEM(key, value) items[n_items++] = SPA_DICT_ITEM_INIT(key, value) + ADD_ITEM(SPA_KEY_DEVICE_ENUM_API,"libcamera.manager"); + ADD_ITEM(SPA_KEY_DEVICE_API, "libcamera"); + ADD_ITEM(SPA_KEY_MEDIA_CLASS, "Video/Device"); + snprintf(path, sizeof(path), "%s", device->camera->id().c_str()); + ADD_ITEM(SPA_KEY_API_LIBCAMERA_PATH, path); +#undef ADD_ITEM + + dict = SPA_DICT_INIT(items, n_items); + info.props = &dict; + spa_device_emit_object_info(&impl->hooks, id, &info); + + return 1; +} + +static void try_add_camera(struct impl *impl, std::shared_ptr<Camera> camera) +{ + struct device *device; + + if ((device = find_device(impl, camera.get())) != NULL) + return; + + if ((device = add_device(impl, std::move(camera))) == NULL) + return; + + spa_log_info(impl->log, "camera added: id:%d %s", device->id, + device->camera->id().c_str()); + emit_object_info(impl, device); +} + +static void try_remove_camera(struct impl *impl, const Camera *camera) +{ + struct device *device; + + if ((device = find_device(impl, camera)) == NULL) + return; + + spa_log_info(impl->log, "camera removed: id:%d %s", device->id, + device->camera->id().c_str()); + spa_device_emit_object_info(&impl->hooks, device->id, NULL); + remove_device(impl, device); +} + +static void consume_hotplug_event(struct impl *impl, impl::hotplug_event& event) +{ + auto& [ type, camera ] = event; + + switch (type) { + case impl::hotplug_event::type::add: + spa_log_info(impl->log, "camera appeared: %s", camera->id().c_str()); + try_add_camera(impl, std::move(camera)); + break; + case impl::hotplug_event::type::remove: + spa_log_info(impl->log, "camera disappeared: %s", camera->id().c_str()); + try_remove_camera(impl, camera.get()); + break; + } +} + +static void on_hotplug_event(void *data, std::uint64_t) +{ + auto impl = static_cast<struct impl *>(data); + + for (;;) { + std::optional<impl::hotplug_event> event; + + { + std::unique_lock guard(impl->hotplug_events_lock); + + if (!impl->hotplug_events.empty()) { + event = std::move(impl->hotplug_events.front()); + impl->hotplug_events.pop(); + } + } + + if (!event) + break; + + consume_hotplug_event(impl, *event); + } +} + +void impl::addCamera(std::shared_ptr<Camera> camera) +{ + { + std::unique_lock guard(hotplug_events_lock); + hotplug_events.push({ hotplug_event::type::add, std::move(camera) }); + } + + spa_loop_utils_signal_event(loop_utils, hotplug_event_source); +} + +void impl::removeCamera(std::shared_ptr<Camera> camera) +{ + { + std::unique_lock guard(hotplug_events_lock); + hotplug_events.push({ hotplug_event::type::remove, std::move(camera) }); + } + + spa_loop_utils_signal_event(loop_utils, hotplug_event_source); +} + +static void start_monitor(struct impl *impl) +{ + impl->manager->cameraAdded.connect(impl, &impl::addCamera); + impl->manager->cameraRemoved.connect(impl, &impl::removeCamera); +} + +static int stop_monitor(struct impl *impl) +{ + if (impl->manager) { + impl->manager->cameraAdded.disconnect(impl, &impl::addCamera); + impl->manager->cameraRemoved.disconnect(impl, &impl::removeCamera); + } + clear_devices (impl); + return 0; +} + +static void collect_existing_devices(struct impl *impl) +{ + auto cameras = impl->manager->cameras(); + + for (std::shared_ptr<Camera>& camera : cameras) + try_add_camera(impl, std::move(camera)); +} + +static const struct spa_dict_item device_info_items[] = { + { SPA_KEY_DEVICE_API, "libcamera" }, + { SPA_KEY_DEVICE_NICK, "libcamera-manager" }, +}; + +static void emit_device_info(struct impl *impl, bool full) +{ + uint64_t old = full ? impl->info.change_mask : 0; + if (full) + impl->info.change_mask = impl->info_all; + if (impl->info.change_mask) { + struct spa_dict dict; + dict = SPA_DICT_INIT_ARRAY(device_info_items); + impl->info.props = &dict; + spa_device_emit_info(&impl->hooks, &impl->info); + impl->info.change_mask = old; + } +} + +static void impl_hook_removed(struct spa_hook *hook) +{ + struct impl *impl = (struct impl*)hook->priv; + if (spa_hook_list_is_empty(&impl->hooks)) { + stop_monitor(impl); + impl->manager.reset(); + } +} + +static int +impl_device_add_listener(void *object, struct spa_hook *listener, + const struct spa_device_events *events, void *data) +{ + int res; + struct impl *impl = (struct impl*) object; + struct spa_hook_list save; + bool had_manager = !!impl->manager; + + spa_return_val_if_fail(impl != NULL, -EINVAL); + spa_return_val_if_fail(events != NULL, -EINVAL); + + if (!impl->manager && !(impl->manager = libcamera_manager_acquire(res))) + return res; + + spa_hook_list_isolate(&impl->hooks, &save, listener, events, data); + + emit_device_info(impl, true); + + if (had_manager) { + for (std::size_t i = 0; i < impl->n_devices; i++) + emit_object_info(impl, &impl->devices[i]); + } + else { + collect_existing_devices(impl); + start_monitor(impl); + } + + spa_hook_list_join(&impl->hooks, &save); + + listener->removed = impl_hook_removed; + listener->priv = impl; + + 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 *impl; + + spa_return_val_if_fail(handle != NULL, -EINVAL); + spa_return_val_if_fail(interface != NULL, -EINVAL); + + impl = (struct impl *) handle; + + if (spa_streq(type, SPA_TYPE_INTERFACE_Device)) + *interface = &impl->device; + else + return -ENOENT; + + return 0; +} + +static int impl_clear(struct spa_handle *handle) +{ + auto impl = reinterpret_cast<struct impl *>(handle); + + stop_monitor(impl); + std::destroy_at(impl); + + return 0; +} + +impl::impl(spa_log *log, spa_loop_utils *loop_utils, spa_source *hotplug_event_source) + : handle({ SPA_VERSION_HANDLE, impl_get_interface, impl_clear }), + log(log), + loop_utils(loop_utils), + hotplug_event_source(hotplug_event_source) +{ + libcamera_log_topic_init(log); + + spa_hook_list_init(&hooks); + + device.iface = SPA_INTERFACE_INIT( + SPA_TYPE_INTERFACE_Device, + SPA_VERSION_DEVICE, + &impl_device, this); +} + +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) +{ + spa_return_val_if_fail(factory != NULL, -EINVAL); + spa_return_val_if_fail(handle != NULL, -EINVAL); + + auto log = static_cast<spa_log *>(spa_support_find(support, n_support, SPA_TYPE_INTERFACE_Log)); + + auto loop_utils = static_cast<spa_loop_utils *>(spa_support_find(support, n_support, SPA_TYPE_INTERFACE_LoopUtils)); + if (!loop_utils) { + spa_log_error(log, "a " SPA_TYPE_INTERFACE_LoopUtils " is needed"); + return -EINVAL; + } + + auto hotplug_event_source = spa_loop_utils_add_event(loop_utils, on_hotplug_event, handle); + if (!hotplug_event_source) { + int res = -errno; + spa_log_error(log, "failed to create hotplug event: %m"); + return res; + } + + new (handle) impl(log, loop_utils, hotplug_event_source); + + 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; +} + +extern "C" { +const struct spa_handle_factory spa_libcamera_manager_factory = { + SPA_VERSION_HANDLE_FACTORY, + SPA_NAME_API_LIBCAMERA_ENUM_MANAGER, + NULL, + impl_get_size, + impl_init, + impl_enum_interface_info, +}; +} diff --git a/spa/plugins/libcamera/libcamera-manager.hpp b/spa/plugins/libcamera/libcamera-manager.hpp new file mode 100644 index 0000000..4336a39 --- /dev/null +++ b/spa/plugins/libcamera/libcamera-manager.hpp @@ -0,0 +1,29 @@ +/* Spa libcamera support + * + * Copyright © 2021 wim Taymans <wim.taymans@gmail.com> + * + * 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 <memory> + +#include <libcamera/camera_manager.h> + +std::shared_ptr<libcamera::CameraManager> libcamera_manager_acquire(int& res); diff --git a/spa/plugins/libcamera/libcamera-source.cpp b/spa/plugins/libcamera/libcamera-source.cpp new file mode 100644 index 0000000..d2ca670 --- /dev/null +++ b/spa/plugins/libcamera/libcamera-source.cpp @@ -0,0 +1,1073 @@ +/* Spa libcamera Source + * + * Copyright (C) 2020, Collabora Ltd. + * Author: Raghavendra Rao Sidlagatta <raghavendra.rao@collabora.com> + * Copyright (C) 2021 Wim Taymans <wim.taymans@gmail.com> + * + * libcamera-source.cpp + * + * 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 <stddef.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <deque> +#include <optional> + +#include <spa/support/plugin.h> +#include <spa/support/log.h> +#include <spa/support/loop.h> +#include <spa/utils/list.h> +#include <spa/utils/keys.h> +#include <spa/utils/names.h> +#include <spa/utils/result.h> +#include <spa/utils/string.h> +#include <spa/utils/ringbuffer.h> +#include <spa/monitor/device.h> +#include <spa/node/node.h> +#include <spa/node/io.h> +#include <spa/node/utils.h> +#include <spa/node/keys.h> +#include <spa/param/video/format-utils.h> +#include <spa/param/param.h> +#include <spa/control/control.h> +#include <spa/pod/filter.h> + +#include <libcamera/camera.h> +#include <libcamera/stream.h> +#include <libcamera/formats.h> +#include <libcamera/framebuffer.h> +#include <libcamera/framebuffer_allocator.h> + +#include "libcamera.h" +#include "libcamera-manager.hpp" + +using namespace libcamera; + +namespace { + +#define MAX_BUFFERS 32 +#define MASK_BUFFERS 31 + +#define BUFFER_FLAG_OUTSTANDING (1<<0) +#define BUFFER_FLAG_ALLOCATED (1<<1) +#define BUFFER_FLAG_MAPPED (1<<2) + +struct buffer { + uint32_t id; + uint32_t flags; + struct spa_list link; + struct spa_buffer *outbuf; + struct spa_meta_header *h; + struct spa_meta_videotransform *videotransform; + void *ptr; +}; + +#define MAX_CONTROLS 64 + +struct control { + uint32_t id; + uint32_t ctrl_id; + double value; +}; + +struct port { + struct impl *impl; + + std::optional<spa_video_info> current_format; + + struct spa_fraction rate = {}; + StreamConfiguration streamConfig; + + uint32_t memtype = 0; + + struct control controls[MAX_CONTROLS]; + uint32_t n_controls = 0; + + struct buffer buffers[MAX_BUFFERS]; + uint32_t n_buffers = 0; + struct spa_list queue; + struct spa_ringbuffer ring = SPA_RINGBUFFER_INIT(); + uint32_t ring_ids[MAX_BUFFERS]; + + static constexpr uint64_t info_all = SPA_PORT_CHANGE_MASK_FLAGS | SPA_PORT_CHANGE_MASK_PARAMS; + struct spa_port_info info = SPA_PORT_INFO_INIT(); + struct spa_io_buffers *io = nullptr; + struct spa_io_sequence *control = nullptr; +#define PORT_PropInfo 0 +#define PORT_EnumFormat 1 +#define PORT_Meta 2 +#define PORT_IO 3 +#define PORT_Format 4 +#define PORT_Buffers 5 +#define N_PORT_PARAMS 6 + struct spa_param_info params[N_PORT_PARAMS]; + + uint32_t fmt_index = 0; + PixelFormat enum_fmt; + uint32_t size_index = 0; + + port(struct impl *impl) + : impl(impl) + { + spa_list_init(&queue); + + params[PORT_PropInfo] = SPA_PARAM_INFO(SPA_PARAM_PropInfo, SPA_PARAM_INFO_READ); + params[PORT_EnumFormat] = SPA_PARAM_INFO(SPA_PARAM_EnumFormat, SPA_PARAM_INFO_READ); + params[PORT_Meta] = SPA_PARAM_INFO(SPA_PARAM_Meta, SPA_PARAM_INFO_READ); + params[PORT_IO] = SPA_PARAM_INFO(SPA_PARAM_IO, SPA_PARAM_INFO_READ); + params[PORT_Format] = SPA_PARAM_INFO(SPA_PARAM_Format, SPA_PARAM_INFO_WRITE); + params[PORT_Buffers] = SPA_PARAM_INFO(SPA_PARAM_Buffers, 0); + + info.flags = SPA_PORT_FLAG_LIVE | SPA_PORT_FLAG_PHYSICAL | SPA_PORT_FLAG_TERMINAL; + info.params = params; + info.n_params = N_PORT_PARAMS; + } +}; + +struct impl { + struct spa_handle handle; + struct spa_node node = {}; + + struct spa_log *log; + struct spa_loop *data_loop; + struct spa_system *system; + + static constexpr uint64_t info_all = + SPA_NODE_CHANGE_MASK_FLAGS | + SPA_NODE_CHANGE_MASK_PROPS | + SPA_NODE_CHANGE_MASK_PARAMS; + struct spa_node_info info = SPA_NODE_INFO_INIT(); +#define NODE_PropInfo 0 +#define NODE_Props 1 +#define NODE_EnumFormat 2 +#define NODE_Format 3 +#define N_NODE_PARAMS 4 + struct spa_param_info params[N_NODE_PARAMS]; + + std::string device_id; + std::string device_name; + + struct spa_hook_list hooks; + struct spa_callbacks callbacks = {}; + + std::array<port, 1> out_ports; + + struct spa_io_position *position = nullptr; + struct spa_io_clock *clock = nullptr; + + std::shared_ptr<CameraManager> manager; + std::shared_ptr<Camera> camera; + + FrameBufferAllocator *allocator = nullptr; + std::vector<std::unique_ptr<libcamera::Request>> requestPool; + std::deque<libcamera::Request *> pendingRequests; + + void requestComplete(libcamera::Request *request); + + std::unique_ptr<CameraConfiguration> config; + + struct spa_source source = {}; + + ControlList ctrls; + bool active = false; + bool acquired = false; + + impl(spa_log *log, spa_loop *data_loop, spa_system *system, + std::shared_ptr<CameraManager> manager, std::shared_ptr<Camera> camera, std::string device_id); +}; + +} + +#define CHECK_PORT(impl,direction,port_id) ((direction) == SPA_DIRECTION_OUTPUT && (port_id) == 0) + +#define GET_OUT_PORT(impl,p) (&impl->out_ports[p]) +#define GET_PORT(impl,d,p) GET_OUT_PORT(impl,p) + +#include "libcamera-utils.cpp" + +static int port_get_format(struct impl *impl, struct port *port, + uint32_t index, + const struct spa_pod *filter, + struct spa_pod **param, + struct spa_pod_builder *builder) +{ + struct spa_pod_frame f; + + if (!port->current_format) + return -EIO; + if (index > 0) + return 0; + + spa_pod_builder_push_object(builder, &f, SPA_TYPE_OBJECT_Format, SPA_PARAM_Format); + spa_pod_builder_add(builder, + SPA_FORMAT_mediaType, SPA_POD_Id(port->current_format->media_type), + SPA_FORMAT_mediaSubtype, SPA_POD_Id(port->current_format->media_subtype), + 0); + + switch (port->current_format->media_subtype) { + case SPA_MEDIA_SUBTYPE_raw: + spa_pod_builder_add(builder, + SPA_FORMAT_VIDEO_format, SPA_POD_Id(port->current_format->info.raw.format), + SPA_FORMAT_VIDEO_size, SPA_POD_Rectangle(&port->current_format->info.raw.size), + SPA_FORMAT_VIDEO_framerate, SPA_POD_Fraction(&port->current_format->info.raw.framerate), + 0); + break; + case SPA_MEDIA_SUBTYPE_mjpg: + case SPA_MEDIA_SUBTYPE_jpeg: + spa_pod_builder_add(builder, + SPA_FORMAT_VIDEO_size, SPA_POD_Rectangle(&port->current_format->info.mjpg.size), + SPA_FORMAT_VIDEO_framerate, SPA_POD_Fraction(&port->current_format->info.mjpg.framerate), + 0); + break; + case SPA_MEDIA_SUBTYPE_h264: + spa_pod_builder_add(builder, + SPA_FORMAT_VIDEO_size, SPA_POD_Rectangle(&port->current_format->info.h264.size), + SPA_FORMAT_VIDEO_framerate, SPA_POD_Fraction(&port->current_format->info.h264.framerate), + 0); + break; + default: + return -EIO; + } + + *param = (struct spa_pod*)spa_pod_builder_pop(builder, &f); + + return 1; +} + +static int impl_node_enum_params(void *object, int seq, + uint32_t id, uint32_t start, uint32_t num, + const struct spa_pod *filter) +{ + struct impl *impl = (struct impl*)object; + struct spa_pod *param; + struct spa_pod_builder b = { 0 }; + uint8_t buffer[1024]; + struct spa_result_node_params result; + uint32_t count = 0; + int res; + + spa_return_val_if_fail(impl != NULL, -EINVAL); + spa_return_val_if_fail(num != 0, -EINVAL); + + result.id = id; + result.next = start; +next: + result.index = result.next++; + + spa_pod_builder_init(&b, buffer, sizeof(buffer)); + + switch (id) { + case SPA_PARAM_PropInfo: + { + switch (result.index) { + case 0: + param = (struct spa_pod*)spa_pod_builder_add_object(&b, + SPA_TYPE_OBJECT_PropInfo, id, + SPA_PROP_INFO_id, SPA_POD_Id(SPA_PROP_device), + SPA_PROP_INFO_description, SPA_POD_String("The libcamera device"), + SPA_PROP_INFO_type, SPA_POD_String(impl->device_id.c_str())); + break; + case 1: + param = (struct spa_pod*)spa_pod_builder_add_object(&b, + SPA_TYPE_OBJECT_PropInfo, id, + SPA_PROP_INFO_id, SPA_POD_Id(SPA_PROP_deviceName), + SPA_PROP_INFO_description, SPA_POD_String("The libcamera device name"), + SPA_PROP_INFO_type, SPA_POD_String(impl->device_name.c_str())); + break; + default: + return spa_libcamera_enum_controls(impl, + GET_OUT_PORT(impl, 0), + seq, result.index - 2, num, filter); + } + break; + } + case SPA_PARAM_Props: + { + switch (result.index) { + case 0: + param = (struct spa_pod*)spa_pod_builder_add_object(&b, + SPA_TYPE_OBJECT_Props, id, + SPA_PROP_device, SPA_POD_String(impl->device_id.c_str()), + SPA_PROP_deviceName, SPA_POD_String(impl->device_name.c_str())); + break; + default: + return 0; + } + break; + } + case SPA_PARAM_EnumFormat: + return spa_libcamera_enum_format(impl, GET_OUT_PORT(impl, 0), + seq, start, num, filter); + case SPA_PARAM_Format: + if ((res = port_get_format(impl, GET_OUT_PORT(impl, 0), result.index, filter, ¶m, &b)) <= 0) + return res; + break; + default: + return -ENOENT; + } + + if (spa_pod_filter(&b, &result.param, param, filter) < 0) + goto next; + + spa_node_emit_result(&impl->hooks, seq, 0, SPA_RESULT_TYPE_NODE_PARAMS, &result); + + if (++count != num) + goto next; + + return 0; +} + +static int impl_node_set_param(void *object, + uint32_t id, uint32_t flags, + const struct spa_pod *param) +{ + struct impl *impl = (struct impl*)object; + + spa_return_val_if_fail(impl != NULL, -EINVAL); + + switch (id) { + case SPA_PARAM_Props: + { + struct spa_pod_object *obj = (struct spa_pod_object *) param; + struct spa_pod_prop *prop; + + if (param == NULL) { + impl->device_id.clear(); + impl->device_name.clear(); + return 0; + } + SPA_POD_OBJECT_FOREACH(obj, prop) { + char device[128]; + + switch (prop->key) { + case SPA_PROP_device: + strncpy(device, (char *)SPA_POD_CONTENTS(struct spa_pod_string, &prop->value), + sizeof(device)-1); + impl->device_id = device; + break; + default: + spa_libcamera_set_control(impl, prop); + break; + } + } + break; + } + default: + return -ENOENT; + } + return 0; +} + +static int impl_node_set_io(void *object, uint32_t id, void *data, size_t size) +{ + struct impl *impl = (struct impl*)object; + + spa_return_val_if_fail(impl != NULL, -EINVAL); + + switch (id) { + case SPA_IO_Clock: + impl->clock = (struct spa_io_clock*)data; + break; + case SPA_IO_Position: + impl->position = (struct spa_io_position*)data; + break; + default: + return -ENOENT; + } + return 0; +} + +static int impl_node_send_command(void *object, const struct spa_command *command) +{ + struct impl *impl = (struct impl*)object; + int res; + + spa_return_val_if_fail(impl != NULL, -EINVAL); + spa_return_val_if_fail(command != NULL, -EINVAL); + + switch (SPA_NODE_COMMAND_ID(command)) { + case SPA_NODE_COMMAND_Start: + { + struct port *port = GET_OUT_PORT(impl, 0); + + if (!port->current_format) + return -EIO; + if (port->n_buffers == 0) + return -EIO; + + if ((res = spa_libcamera_stream_on(impl)) < 0) + return res; + break; + } + case SPA_NODE_COMMAND_Pause: + case SPA_NODE_COMMAND_Suspend: + if ((res = spa_libcamera_stream_off(impl)) < 0) + return res; + break; + default: + return -ENOTSUP; + } + + return 0; +} + +static const struct spa_dict_item info_items[] = { + { SPA_KEY_DEVICE_API, "libcamera" }, + { SPA_KEY_MEDIA_CLASS, "Video/Source" }, + { SPA_KEY_MEDIA_ROLE, "Camera" }, + { SPA_KEY_NODE_DRIVER, "true" }, +}; + +static void emit_node_info(struct impl *impl, bool full) +{ + uint64_t old = full ? impl->info.change_mask : 0; + if (full) + impl->info.change_mask = impl->info_all; + if (impl->info.change_mask) { + struct spa_dict dict = SPA_DICT_INIT_ARRAY(info_items); + impl->info.props = &dict; + spa_node_emit_info(&impl->hooks, &impl->info); + impl->info.change_mask = old; + } +} + +static void emit_port_info(struct impl *impl, struct port *port, bool full) +{ + uint64_t old = full ? port->info.change_mask : 0; + if (full) + port->info.change_mask = port->info_all; + if (port->info.change_mask) { + spa_node_emit_port_info(&impl->hooks, + SPA_DIRECTION_OUTPUT, 0, &port->info); + port->info.change_mask = old; + } +} + +static int +impl_node_add_listener(void *object, + struct spa_hook *listener, + const struct spa_node_events *events, + void *data) +{ + struct impl *impl = (struct impl*)object; + struct spa_hook_list save; + + spa_return_val_if_fail(impl != NULL, -EINVAL); + + spa_hook_list_isolate(&impl->hooks, &save, listener, events, data); + + emit_node_info(impl, true); + emit_port_info(impl, GET_OUT_PORT(impl, 0), true); + + spa_hook_list_join(&impl->hooks, &save); + + return 0; +} + +static int impl_node_set_callbacks(void *object, + const struct spa_node_callbacks *callbacks, + void *data) +{ + struct impl *impl = (struct impl*)object; + + spa_return_val_if_fail(impl != NULL, -EINVAL); + + impl->callbacks = SPA_CALLBACKS_INIT(callbacks, data); + + return 0; +} + +static int impl_node_sync(void *object, int seq) +{ + struct impl *impl = (struct impl*)object; + + spa_return_val_if_fail(impl != NULL, -EINVAL); + + spa_node_emit_result(&impl->hooks, seq, 0, 0, NULL); + + return 0; +} + +static int impl_node_add_port(void *object, + enum spa_direction direction, + uint32_t port_id, const struct spa_dict *props) +{ + return -ENOTSUP; +} + +static int impl_node_remove_port(void *object, + enum spa_direction direction, + uint32_t port_id) +{ + return -ENOTSUP; +} + +static int impl_node_port_enum_params(void *object, int seq, + enum spa_direction direction, + uint32_t port_id, + uint32_t id, uint32_t start, uint32_t num, + const struct spa_pod *filter) +{ + + struct impl *impl = (struct impl*)object; + struct port *port; + struct spa_pod *param; + struct spa_pod_builder b = { 0 }; + uint8_t buffer[1024]; + struct spa_result_node_params result; + uint32_t count = 0; + int res; + + spa_return_val_if_fail(impl != NULL, -EINVAL); + spa_return_val_if_fail(num != 0, -EINVAL); + spa_return_val_if_fail(CHECK_PORT(impl, direction, port_id), -EINVAL); + + port = GET_PORT(impl, direction, port_id); + + result.id = id; + result.next = start; +next: + result.index = result.next++; + + spa_pod_builder_init(&b, buffer, sizeof(buffer)); + + switch (id) { + case SPA_PARAM_PropInfo: + return spa_libcamera_enum_controls(impl, port, seq, start, num, filter); + + case SPA_PARAM_EnumFormat: + return spa_libcamera_enum_format(impl, port, seq, start, num, filter); + + case SPA_PARAM_Format: + if((res = port_get_format(impl, port, result.index, filter, ¶m, &b)) <= 0) + return res; + break; + case SPA_PARAM_Buffers: + { + if (!port->current_format) + return -EIO; + if (result.index > 0) + return 0; + + /* Get the number of buffers to be used from libcamera and send the same to pipewire + * so that exact number of buffers are allocated + */ + uint32_t n_buffers = port->streamConfig.bufferCount; + + param = (struct spa_pod*)spa_pod_builder_add_object(&b, + SPA_TYPE_OBJECT_ParamBuffers, id, + SPA_PARAM_BUFFERS_buffers, SPA_POD_CHOICE_RANGE_Int(n_buffers, n_buffers, n_buffers), + SPA_PARAM_BUFFERS_blocks, SPA_POD_Int(1), + SPA_PARAM_BUFFERS_size, SPA_POD_Int(port->streamConfig.frameSize), + SPA_PARAM_BUFFERS_stride, SPA_POD_Int(port->streamConfig.stride)); + break; + } + case SPA_PARAM_Meta: + switch (result.index) { + case 0: + param = (struct spa_pod*)spa_pod_builder_add_object(&b, + SPA_TYPE_OBJECT_ParamMeta, id, + SPA_PARAM_META_type, SPA_POD_Id(SPA_META_Header), + SPA_PARAM_META_size, SPA_POD_Int(sizeof(struct spa_meta_header))); + break; + case 1: + param = (struct spa_pod*)spa_pod_builder_add_object(&b, + SPA_TYPE_OBJECT_ParamMeta, id, + SPA_PARAM_META_type, SPA_POD_Id(SPA_META_VideoTransform), + SPA_PARAM_META_size, SPA_POD_Int(sizeof(struct spa_meta_videotransform))); + break; + default: + return 0; + } + break; + case SPA_PARAM_IO: + switch (result.index) { + case 0: + param = (struct spa_pod*)spa_pod_builder_add_object(&b, + SPA_TYPE_OBJECT_ParamIO, id, + SPA_PARAM_IO_id, SPA_POD_Id(SPA_IO_Buffers), + SPA_PARAM_IO_size, SPA_POD_Int(sizeof(struct spa_io_buffers))); + break; + case 1: + param = (struct spa_pod*)spa_pod_builder_add_object(&b, + SPA_TYPE_OBJECT_ParamIO, id, + SPA_PARAM_IO_id, SPA_POD_Id(SPA_IO_Clock), + SPA_PARAM_IO_size, SPA_POD_Int(sizeof(struct spa_io_clock))); + break; + case 2: + param = (struct spa_pod*)spa_pod_builder_add_object(&b, + SPA_TYPE_OBJECT_ParamIO, id, + SPA_PARAM_IO_id, SPA_POD_Id(SPA_IO_Control), + SPA_PARAM_IO_size, SPA_POD_Int(sizeof(struct spa_io_sequence))); + break; + default: + return 0; + } + break; + default: + return -ENOENT; + } + + if (spa_pod_filter(&b, &result.param, param, filter) < 0) + goto next; + + spa_node_emit_result(&impl->hooks, seq, 0, SPA_RESULT_TYPE_NODE_PARAMS, &result); + + if (++count != num) + goto next; + + return 0; +} + +static int port_set_format(struct impl *impl, struct port *port, + uint32_t flags, const struct spa_pod *format) +{ + struct spa_video_info info; + int res; + + if (format == NULL) { + if (!port->current_format) + return 0; + + spa_libcamera_stream_off(impl); + spa_libcamera_clear_buffers(impl, port); + port->current_format.reset(); + + spa_libcamera_close(impl); + goto done; + } else { + spa_zero(info); + if ((res = spa_format_parse(format, &info.media_type, &info.media_subtype)) < 0) + return res; + + if (info.media_type != SPA_MEDIA_TYPE_video) { + spa_log_error(impl->log, "media type must be video"); + return -EINVAL; + } + + switch (info.media_subtype) { + case SPA_MEDIA_SUBTYPE_raw: + if (spa_format_video_raw_parse(format, &info.info.raw) < 0) { + spa_log_error(impl->log, "can't parse video raw"); + return -EINVAL; + } + + if (port->current_format && info.media_type == port->current_format->media_type && + info.media_subtype == port->current_format->media_subtype && + info.info.raw.format == port->current_format->info.raw.format && + info.info.raw.size.width == port->current_format->info.raw.size.width && + info.info.raw.size.height == port->current_format->info.raw.size.height && + info.info.raw.flags == port->current_format->info.raw.flags && + (!(info.info.raw.flags & SPA_VIDEO_FLAG_MODIFIER) || + (info.info.raw.modifier == port->current_format->info.raw.modifier))) + return 0; + break; + case SPA_MEDIA_SUBTYPE_mjpg: + if (spa_format_video_mjpg_parse(format, &info.info.mjpg) < 0) + return -EINVAL; + + if (port->current_format && info.media_type == port->current_format->media_type && + info.media_subtype == port->current_format->media_subtype && + info.info.mjpg.size.width == port->current_format->info.mjpg.size.width && + info.info.mjpg.size.height == port->current_format->info.mjpg.size.height) + return 0; + break; + case SPA_MEDIA_SUBTYPE_h264: + if (spa_format_video_h264_parse(format, &info.info.h264) < 0) + return -EINVAL; + + if (port->current_format && info.media_type == port->current_format->media_type && + info.media_subtype == port->current_format->media_subtype && + info.info.h264.size.width == port->current_format->info.h264.size.width && + info.info.h264.size.height == port->current_format->info.h264.size.height) + return 0; + break; + default: + return -EINVAL; + } + } + + if (port->current_format && !(flags & SPA_NODE_PARAM_FLAG_TEST_ONLY)) { + spa_libcamera_use_buffers(impl, port, NULL, 0); + port->current_format.reset(); + } + + if (spa_libcamera_set_format(impl, port, &info, flags & SPA_NODE_PARAM_FLAG_TEST_ONLY) < 0) + return -EINVAL; + + if (!(flags & SPA_NODE_PARAM_FLAG_TEST_ONLY)) { + port->current_format = info; + } + + done: + impl->info.change_mask |= SPA_NODE_CHANGE_MASK_PARAMS; + port->info.change_mask |= SPA_PORT_CHANGE_MASK_PARAMS; + if (port->current_format) { + impl->params[NODE_Format] = SPA_PARAM_INFO(SPA_PARAM_Format, SPA_PARAM_INFO_READWRITE); + port->params[PORT_Format] = SPA_PARAM_INFO(SPA_PARAM_Format, SPA_PARAM_INFO_READWRITE); + port->params[PORT_Buffers] = SPA_PARAM_INFO(SPA_PARAM_Buffers, SPA_PARAM_INFO_READ); + } else { + impl->params[NODE_Format] = SPA_PARAM_INFO(SPA_PARAM_Format, SPA_PARAM_INFO_WRITE); + port->params[PORT_Format] = SPA_PARAM_INFO(SPA_PARAM_Format, SPA_PARAM_INFO_WRITE); + port->params[PORT_Buffers] = SPA_PARAM_INFO(SPA_PARAM_Buffers, 0); + } + emit_port_info(impl, port, false); + emit_node_info(impl, false); + + return 0; +} + +static int impl_node_port_set_param(void *object, + enum spa_direction direction, uint32_t port_id, + uint32_t id, uint32_t flags, + const struct spa_pod *param) +{ + struct impl *impl = (struct impl*)object; + struct port *port; + int res; + + spa_return_val_if_fail(object != NULL, -EINVAL); + spa_return_val_if_fail(CHECK_PORT(impl, direction, port_id), -EINVAL); + + port = GET_PORT(impl, direction, port_id); + + switch (id) { + case SPA_PARAM_Format: + res = port_set_format(impl, port, flags, param); + break; + default: + res = -ENOENT; + } + return res; +} + +static int impl_node_port_use_buffers(void *object, + enum spa_direction direction, + uint32_t port_id, + uint32_t flags, + struct spa_buffer **buffers, + uint32_t n_buffers) +{ + struct impl *impl = (struct impl*)object; + struct port *port; + int res; + + spa_return_val_if_fail(impl != NULL, -EINVAL); + spa_return_val_if_fail(CHECK_PORT(impl, direction, port_id), -EINVAL); + + port = GET_PORT(impl, direction, port_id); + + if (port->n_buffers) { + spa_libcamera_stream_off(impl); + if ((res = spa_libcamera_clear_buffers(impl, port)) < 0) + return res; + } + if (n_buffers > 0 && !port->current_format) + return -EIO; + if (n_buffers > MAX_BUFFERS) + return -ENOSPC; + if (buffers == NULL) + return 0; + + if (flags & SPA_NODE_BUFFERS_FLAG_ALLOC) { + res = spa_libcamera_alloc_buffers(impl, port, buffers, n_buffers); + } else { + res = spa_libcamera_use_buffers(impl, port, buffers, n_buffers); + } + return res; +} + +static int impl_node_port_set_io(void *object, + enum spa_direction direction, + uint32_t port_id, + uint32_t id, + void *data, size_t size) +{ + struct impl *impl = (struct impl*)object; + struct port *port; + + spa_return_val_if_fail(impl != NULL, -EINVAL); + spa_return_val_if_fail(CHECK_PORT(impl, direction, port_id), -EINVAL); + + port = GET_PORT(impl, direction, port_id); + + switch (id) { + case SPA_IO_Buffers: + port->io = (struct spa_io_buffers*)data; + break; + case SPA_IO_Control: + port->control = (struct spa_io_sequence*)data; + break; + default: + return -ENOENT; + } + return 0; +} + +static int impl_node_port_reuse_buffer(void *object, + uint32_t port_id, + uint32_t buffer_id) +{ + struct impl *impl = (struct impl*)object; + struct port *port; + int res; + + spa_return_val_if_fail(impl != NULL, -EINVAL); + spa_return_val_if_fail(port_id == 0, -EINVAL); + + port = GET_OUT_PORT(impl, port_id); + + spa_return_val_if_fail(buffer_id < port->n_buffers, -EINVAL); + + res = spa_libcamera_buffer_recycle(impl, port, buffer_id); + + return res; +} + +static int process_control(struct impl *impl, struct spa_pod_sequence *control) +{ + struct spa_pod_control *c; + + SPA_POD_SEQUENCE_FOREACH(control, c) { + switch (c->type) { + case SPA_CONTROL_Properties: + { + struct spa_pod_prop *prop; + struct spa_pod_object *obj = (struct spa_pod_object *) &c->value; + + SPA_POD_OBJECT_FOREACH(obj, prop) { + spa_libcamera_set_control(impl, prop); + } + break; + } + default: + break; + } + } + return 0; +} + +static int impl_node_process(void *object) +{ + struct impl *impl = (struct impl*)object; + int res; + struct spa_io_buffers *io; + struct port *port; + struct buffer *b; + + spa_return_val_if_fail(impl != NULL, -EINVAL); + + port = GET_OUT_PORT(impl, 0); + if ((io = port->io) == NULL) + return -EIO; + + if (port->control) + process_control(impl, &port->control->sequence); + + spa_log_trace(impl->log, "%p; status %d", impl, io->status); + + if (io->status == SPA_STATUS_HAVE_DATA) { + return SPA_STATUS_HAVE_DATA; + } + + if (io->buffer_id < port->n_buffers) { + if ((res = spa_libcamera_buffer_recycle(impl, port, io->buffer_id)) < 0) + return res; + + io->buffer_id = SPA_ID_INVALID; + } + + if (spa_list_is_empty(&port->queue)) { + return SPA_STATUS_OK; + } + + b = spa_list_first(&port->queue, struct buffer, link); + spa_list_remove(&b->link); + SPA_FLAG_SET(b->flags, BUFFER_FLAG_OUTSTANDING); + + spa_log_trace(impl->log, "%p: dequeue buffer %d", impl, b->id); + + io->buffer_id = b->id; + io->status = SPA_STATUS_HAVE_DATA; + + return SPA_STATUS_HAVE_DATA; +} + +static const struct spa_node_methods impl_node = { + SPA_VERSION_NODE_METHODS, + .add_listener = impl_node_add_listener, + .set_callbacks = impl_node_set_callbacks, + .sync = impl_node_sync, + .enum_params = impl_node_enum_params, + .set_param = impl_node_set_param, + .set_io = impl_node_set_io, + .send_command = impl_node_send_command, + .add_port = impl_node_add_port, + .remove_port = impl_node_remove_port, + .port_enum_params = impl_node_port_enum_params, + .port_set_param = impl_node_port_set_param, + .port_use_buffers = impl_node_port_use_buffers, + .port_set_io = impl_node_port_set_io, + .port_reuse_buffer = impl_node_port_reuse_buffer, + .process = impl_node_process, +}; + +static int impl_get_interface(struct spa_handle *handle, const char *type, void **interface) +{ + struct impl *impl; + + spa_return_val_if_fail(handle != NULL, -EINVAL); + spa_return_val_if_fail(interface != NULL, -EINVAL); + + impl = (struct impl *) handle; + + if (spa_streq(type, SPA_TYPE_INTERFACE_Node)) + *interface = &impl->node; + else + return -ENOENT; + + return 0; +} + +static int impl_clear(struct spa_handle *handle) +{ + std::destroy_at(reinterpret_cast<impl *>(handle)); + return 0; +} + +impl::impl(spa_log *log, spa_loop *data_loop, spa_system *system, + std::shared_ptr<CameraManager> manager, std::shared_ptr<Camera> camera, std::string device_id) + : handle({ SPA_VERSION_HANDLE, impl_get_interface, impl_clear }), + log(log), + data_loop(data_loop), + system(system), + device_id(std::move(device_id)), + out_ports{{this}}, + manager(std::move(manager)), + camera(std::move(camera)) +{ + libcamera_log_topic_init(log); + + spa_hook_list_init(&hooks); + + node.iface = SPA_INTERFACE_INIT( + SPA_TYPE_INTERFACE_Node, + SPA_VERSION_NODE, + &impl_node, this); + + params[NODE_PropInfo] = SPA_PARAM_INFO(SPA_PARAM_PropInfo, SPA_PARAM_INFO_READ); + params[NODE_Props] = SPA_PARAM_INFO(SPA_PARAM_Props, SPA_PARAM_INFO_READWRITE); + params[NODE_EnumFormat] = SPA_PARAM_INFO(SPA_PARAM_EnumFormat, SPA_PARAM_INFO_READ); + params[NODE_Format] = SPA_PARAM_INFO(SPA_PARAM_Format, SPA_PARAM_INFO_WRITE); + + info.max_output_ports = 1; + info.flags = SPA_NODE_FLAG_RT; + info.params = params; + info.n_params = N_NODE_PARAMS; +} + +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) +{ + const char *str; + int res; + + spa_return_val_if_fail(factory != NULL, -EINVAL); + spa_return_val_if_fail(handle != NULL, -EINVAL); + + auto log = static_cast<spa_log *>(spa_support_find(support, n_support, SPA_TYPE_INTERFACE_Log)); + auto data_loop = static_cast<spa_loop *>(spa_support_find(support, n_support, SPA_TYPE_INTERFACE_DataLoop)); + auto system = static_cast<spa_system *>(spa_support_find(support, n_support, SPA_TYPE_INTERFACE_System)); + + if (!data_loop) { + spa_log_error(log, "a data_loop is needed"); + return -EINVAL; + } + + if (!system) { + spa_log_error(log, "a system is needed"); + return -EINVAL; + } + + auto manager = libcamera_manager_acquire(res); + if (!manager) { + spa_log_error(log, "can't start camera manager: %s", spa_strerror(res)); + return res; + } + + std::string device_id; + if (info && (str = spa_dict_lookup(info, SPA_KEY_API_LIBCAMERA_PATH))) + device_id = str; + + auto camera = manager->get(device_id); + if (!camera) { + spa_log_error(log, "unknown camera id %s", device_id.c_str()); + return -ENOENT; + } + + new (handle) impl(log, data_loop, system, + std::move(manager), std::move(camera), std::move(device_id)); + + return 0; +} + +static const struct spa_interface_info impl_interfaces[] = { + {SPA_TYPE_INTERFACE_Node,}, +}; + +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; +} + +extern "C" { +const struct spa_handle_factory spa_libcamera_source_factory = { + SPA_VERSION_HANDLE_FACTORY, + SPA_NAME_API_LIBCAMERA_SOURCE, + NULL, + impl_get_size, + impl_init, + impl_enum_interface_info, +}; +} diff --git a/spa/plugins/libcamera/libcamera-utils.cpp b/spa/plugins/libcamera/libcamera-utils.cpp new file mode 100644 index 0000000..af07484 --- /dev/null +++ b/spa/plugins/libcamera/libcamera-utils.cpp @@ -0,0 +1,990 @@ +/* Spa + * + * Copyright (C) 2020, Collabora Ltd. + * Author: Raghavendra Rao Sidlagatta <raghavendra.rao@collabora.com> + * Copyright (C) 2021 Wim Taymans <wim.taymans@gmail.com> + * + * libcamera-utils.cpp + * + * 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 <stdio.h> +#include <string.h> +#include <unistd.h> +#include <sched.h> +#include <errno.h> +#include <sys/mman.h> +#include <poll.h> +#include <limits.h> + +#include <linux/media.h> + +int spa_libcamera_open(struct impl *impl) +{ + if (impl->acquired) + return 0; + + spa_log_info(impl->log, "open camera %s", impl->device_id.c_str()); + impl->camera->acquire(); + + impl->allocator = new FrameBufferAllocator(impl->camera); + + impl->acquired = true; + return 0; +} + +int spa_libcamera_close(struct impl *impl) +{ + struct port *port = &impl->out_ports[0]; + if (!impl->acquired) + return 0; + if (impl->active || port->current_format) + return 0; + + spa_log_info(impl->log, "close camera %s", impl->device_id.c_str()); + delete impl->allocator; + impl->allocator = nullptr; + + impl->camera->release(); + + impl->acquired = false; + return 0; +} + +static void spa_libcamera_get_config(struct impl *impl) +{ + if (impl->config) + return; + + StreamRoles roles; + roles.push_back(StreamRole::VideoRecording); + impl->config = impl->camera->generateConfiguration(roles); +} + +static int spa_libcamera_buffer_recycle(struct impl *impl, struct port *port, uint32_t buffer_id) +{ + struct buffer *b = &port->buffers[buffer_id]; + int res; + + if (!SPA_FLAG_IS_SET(b->flags, BUFFER_FLAG_OUTSTANDING)) + return 0; + + SPA_FLAG_CLEAR(b->flags, BUFFER_FLAG_OUTSTANDING); + + if (buffer_id >= impl->requestPool.size()) { + spa_log_warn(impl->log, "invalid buffer_id %u >= %zu", + buffer_id, impl->requestPool.size()); + return -EINVAL; + } + Request *request = impl->requestPool[buffer_id].get(); + Stream *stream = port->streamConfig.stream(); + FrameBuffer *buffer = impl->allocator->buffers(stream)[buffer_id].get(); + if ((res = request->addBuffer(stream, buffer)) < 0) { + spa_log_warn(impl->log, "can't add buffer %u for request: %s", + buffer_id, spa_strerror(res)); + return -ENOMEM; + } + if (!impl->active) { + impl->pendingRequests.push_back(request); + return 0; + } else { + request->controls().merge(impl->ctrls); + impl->ctrls.clear(); + if ((res = impl->camera->queueRequest(request)) < 0) { + spa_log_warn(impl->log, "can't queue buffer %u: %s", + buffer_id, spa_strerror(res)); + return res == -EACCES ? -EBUSY : res; + } + } + return 0; +} + +static int allocBuffers(struct impl *impl, struct port *port, unsigned int count) +{ + int res; + + if ((res = impl->allocator->allocate(port->streamConfig.stream())) < 0) + return res; + + for (unsigned int i = 0; i < count; i++) { + std::unique_ptr<Request> request = impl->camera->createRequest(i); + if (!request) { + impl->requestPool.clear(); + return -ENOMEM; + } + impl->requestPool.push_back(std::move(request)); + } + return res; +} + +static void freeBuffers(struct impl *impl, struct port *port) +{ + impl->pendingRequests.clear(); + impl->requestPool.clear(); + impl->allocator->free(port->streamConfig.stream()); +} + +static int spa_libcamera_clear_buffers(struct impl *impl, struct port *port) +{ + uint32_t i; + + if (port->n_buffers == 0) + return 0; + + for (i = 0; i < port->n_buffers; i++) { + struct buffer *b; + struct spa_data *d; + + b = &port->buffers[i]; + d = b->outbuf->datas; + + if (SPA_FLAG_IS_SET(b->flags, BUFFER_FLAG_OUTSTANDING)) { + spa_log_debug(impl->log, "queueing outstanding buffer %p", b); + spa_libcamera_buffer_recycle(impl, port, i); + } + if (SPA_FLAG_IS_SET(b->flags, BUFFER_FLAG_MAPPED)) { + munmap(SPA_PTROFF(b->ptr, -d[0].mapoffset, void), + d[0].maxsize - d[0].mapoffset); + } + if (SPA_FLAG_IS_SET(b->flags, BUFFER_FLAG_ALLOCATED)) { + close(d[0].fd); + } + d[0].type = SPA_ID_INVALID; + } + + freeBuffers(impl, port); + port->n_buffers = 0; + + return 0; +} + +struct format_info { + PixelFormat pix; + uint32_t format; + uint32_t media_type; + uint32_t media_subtype; +}; + +#define MAKE_FMT(pix,fmt,mt,mst) { pix, SPA_VIDEO_FORMAT_ ##fmt, SPA_MEDIA_TYPE_ ##mt, SPA_MEDIA_SUBTYPE_ ##mst } +static const struct format_info format_info[] = { + /* RGB formats */ + MAKE_FMT(formats::RGB565, RGB16, video, raw), + MAKE_FMT(formats::RGB565_BE, RGB16, video, raw), + MAKE_FMT(formats::RGB888, RGB, video, raw), + MAKE_FMT(formats::BGR888, BGR, video, raw), + MAKE_FMT(formats::XRGB8888, xRGB, video, raw), + MAKE_FMT(formats::XBGR8888, xBGR, video, raw), + MAKE_FMT(formats::RGBX8888, RGBx, video, raw), + MAKE_FMT(formats::BGRX8888, BGRx, video, raw), + MAKE_FMT(formats::ARGB8888, ARGB, video, raw), + MAKE_FMT(formats::ABGR8888, ABGR, video, raw), + MAKE_FMT(formats::RGBA8888, RGBA, video, raw), + MAKE_FMT(formats::BGRA8888, BGRA, video, raw), + + MAKE_FMT(formats::YUYV, YUY2, video, raw), + MAKE_FMT(formats::YVYU, YVYU, video, raw), + MAKE_FMT(formats::UYVY, UYVY, video, raw), + MAKE_FMT(formats::VYUY, VYUY, video, raw), + + MAKE_FMT(formats::NV12, NV12, video, raw), + MAKE_FMT(formats::NV21, NV21, video, raw), + MAKE_FMT(formats::NV16, NV16, video, raw), + MAKE_FMT(formats::NV61, NV61, video, raw), + MAKE_FMT(formats::NV24, NV24, video, raw), + + MAKE_FMT(formats::YUV420, I420, video, raw), + MAKE_FMT(formats::YVU420, YV12, video, raw), + MAKE_FMT(formats::YUV422, Y42B, video, raw), + + MAKE_FMT(formats::MJPEG, ENCODED, video, mjpg), +#undef MAKE_FMT +}; + +static const struct format_info *video_format_to_info(const PixelFormat &pix) { + size_t i; + + for (i = 0; i < SPA_N_ELEMENTS(format_info); i++) { + if (format_info[i].pix == pix) + return &format_info[i]; + } + return NULL; +} + +static const struct format_info *find_format_info_by_media_type(uint32_t type, + uint32_t subtype, uint32_t format, int startidx) +{ + size_t i; + + for (i = startidx; i < SPA_N_ELEMENTS(format_info); i++) { + if ((format_info[i].media_type == type) && + (format_info[i].media_subtype == subtype) && + (format == 0 || format_info[i].format == format)) + return &format_info[i]; + } + return NULL; +} + +static int score_size(Size &a, Size &b) +{ + int x, y; + x = (int)a.width - (int)b.width; + y = (int)a.height - (int)b.height; + return x * x + y * y; +} + +static int +spa_libcamera_enum_format(struct impl *impl, struct port *port, int seq, + uint32_t start, uint32_t num, const struct spa_pod *filter) +{ + int res; + const struct format_info *info; + uint8_t buffer[1024]; + struct spa_pod_builder b = { 0 }; + struct spa_pod_frame f[2]; + struct spa_result_node_params result; + struct spa_pod *fmt; + uint32_t i, count = 0, num_sizes; + PixelFormat format; + Size frameSize; + SizeRange sizeRange = SizeRange(); + + spa_libcamera_get_config(impl); + + const StreamConfiguration& streamConfig = impl->config->at(0); + const StreamFormats &formats = streamConfig.formats(); + + result.id = SPA_PARAM_EnumFormat; + result.next = start; + + if (result.next == 0) { + port->fmt_index = 0; + port->size_index = 0; + } +next: + result.index = result.next++; + +next_fmt: + if (port->fmt_index >= formats.pixelformats().size()) + goto enum_end; + + format = formats.pixelformats()[port->fmt_index]; + + spa_log_debug(impl->log, "format: %s", format.toString().c_str()); + + info = video_format_to_info(format); + if (info == NULL) { + spa_log_debug(impl->log, "unknown format"); + port->fmt_index++; + goto next_fmt; + } + + num_sizes = formats.sizes(format).size(); + if (num_sizes > 0 && port->size_index <= num_sizes) { + if (port->size_index == 0) { + Size wanted = Size(640, 480), test; + int score, best = INT_MAX; + for (i = 0; i < num_sizes; i++) { + test = formats.sizes(format)[i]; + score = score_size(wanted, test); + if (score < best) { + best = score; + frameSize = test; + } + } + } + else { + frameSize = formats.sizes(format)[port->size_index - 1]; + } + } else if (port->size_index < 1) { + sizeRange = formats.range(format); + if (sizeRange.hStep == 0 || sizeRange.vStep == 0) { + port->size_index = 0; + port->fmt_index++; + goto next_fmt; + } + } else { + port->size_index = 0; + port->fmt_index++; + goto next_fmt; + } + port->size_index++; + + spa_pod_builder_init(&b, buffer, sizeof(buffer)); + spa_pod_builder_push_object(&b, &f[0], SPA_TYPE_OBJECT_Format, SPA_PARAM_EnumFormat); + spa_pod_builder_add(&b, + SPA_FORMAT_mediaType, SPA_POD_Id(info->media_type), + SPA_FORMAT_mediaSubtype, SPA_POD_Id(info->media_subtype), + 0); + + if (info->media_subtype == SPA_MEDIA_SUBTYPE_raw) { + spa_pod_builder_prop(&b, SPA_FORMAT_VIDEO_format, 0); + spa_pod_builder_id(&b, info->format); + } + if (info->pix.modifier()) { + spa_pod_builder_prop(&b, SPA_FORMAT_VIDEO_modifier, 0); + spa_pod_builder_long(&b, info->pix.modifier()); + } + spa_pod_builder_prop(&b, SPA_FORMAT_VIDEO_size, 0); + + if (sizeRange.hStep != 0 && sizeRange.vStep != 0) { + spa_pod_builder_push_choice(&b, &f[1], SPA_CHOICE_Step, 0); + spa_pod_builder_frame(&b, &f[1]); + spa_pod_builder_rectangle(&b, + sizeRange.min.width, + sizeRange.min.height); + spa_pod_builder_rectangle(&b, + sizeRange.min.width, + sizeRange.min.height); + spa_pod_builder_rectangle(&b, + sizeRange.max.width, + sizeRange.max.height); + spa_pod_builder_rectangle(&b, + sizeRange.hStep, + sizeRange.vStep); + spa_pod_builder_pop(&b, &f[1]); + + } else { + spa_pod_builder_rectangle(&b, frameSize.width, frameSize.height); + } + + fmt = (struct spa_pod*) spa_pod_builder_pop(&b, &f[0]); + + if (spa_pod_filter(&b, &result.param, fmt, filter) < 0) + goto next; + + spa_node_emit_result(&impl->hooks, seq, 0, SPA_RESULT_TYPE_NODE_PARAMS, &result); + + if (++count != num) + goto next; + + enum_end: + res = 0; + return res; +} + +static int spa_libcamera_set_format(struct impl *impl, struct port *port, + struct spa_video_info *format, bool try_only) +{ + const struct format_info *info = NULL; + uint32_t video_format; + struct spa_rectangle *size = NULL; + struct spa_fraction *framerate = NULL; + CameraConfiguration::Status validation; + int res; + + switch (format->media_subtype) { + case SPA_MEDIA_SUBTYPE_raw: + video_format = format->info.raw.format; + size = &format->info.raw.size; + framerate = &format->info.raw.framerate; + break; + case SPA_MEDIA_SUBTYPE_mjpg: + case SPA_MEDIA_SUBTYPE_jpeg: + video_format = SPA_VIDEO_FORMAT_ENCODED; + size = &format->info.mjpg.size; + framerate = &format->info.mjpg.framerate; + break; + case SPA_MEDIA_SUBTYPE_h264: + video_format = SPA_VIDEO_FORMAT_ENCODED; + size = &format->info.h264.size; + framerate = &format->info.h264.framerate; + break; + default: + video_format = SPA_VIDEO_FORMAT_ENCODED; + break; + } + + info = find_format_info_by_media_type(format->media_type, + format->media_subtype, video_format, 0); + if (info == NULL || size == NULL || framerate == NULL) { + spa_log_error(impl->log, "unknown media type %d %d %d", format->media_type, + format->media_subtype, video_format); + return -EINVAL; + } + StreamConfiguration& streamConfig = impl->config->at(0); + + streamConfig.pixelFormat = info->pix; + streamConfig.size.width = size->width; + streamConfig.size.height = size->height; + streamConfig.bufferCount = 8; + + validation = impl->config->validate(); + if (validation == CameraConfiguration::Invalid) + return -EINVAL; + + if (try_only) + return 0; + + if ((res = spa_libcamera_open(impl)) < 0) + return res; + + res = impl->camera->configure(impl->config.get()); + if (res != 0) + goto error; + + port->streamConfig = impl->config->at(0); + + if ((res = allocBuffers(impl, port, port->streamConfig.bufferCount)) < 0) + goto error; + + port->info.change_mask |= SPA_PORT_CHANGE_MASK_FLAGS | SPA_PORT_CHANGE_MASK_RATE; + port->info.flags = SPA_PORT_FLAG_CAN_ALLOC_BUFFERS | + SPA_PORT_FLAG_LIVE | + SPA_PORT_FLAG_PHYSICAL | + SPA_PORT_FLAG_TERMINAL; + port->info.rate = SPA_FRACTION(port->rate.num, port->rate.denom); + + return 0; +error: + spa_libcamera_close(impl); + return res; + +} + +static int +spa_libcamera_enum_controls(struct impl *impl, struct port *port, int seq, + uint32_t start, uint32_t num, + const struct spa_pod *filter) +{ + const ControlInfoMap &info = impl->camera->controls(); + uint8_t buffer[1024]; + struct spa_pod_builder b = { 0 }; + struct spa_pod_frame f[2]; + struct spa_result_node_params result; + struct spa_pod *ctrl; + uint32_t count = 0, skip; + int res; + const ControlId *ctrl_id; + ControlInfo ctrl_info; + + result.id = SPA_PARAM_PropInfo; + result.next = start; + + auto it = info.begin(); + for (skip = result.next; skip; skip--) + it++; + + if (false) { +next: + it++; + } + result.index = result.next++; + if (it == info.end()) + goto enum_end; + + ctrl_id = it->first; + ctrl_info = it->second; + + spa_pod_builder_init(&b, buffer, sizeof(buffer)); + spa_pod_builder_push_object(&b, &f[0], SPA_TYPE_OBJECT_PropInfo, SPA_PARAM_PropInfo); + spa_pod_builder_add(&b, + SPA_PROP_INFO_id, SPA_POD_Id(ctrl_id->id()), + SPA_PROP_INFO_description, SPA_POD_String(ctrl_id->name().c_str()), + 0); + + switch (ctrl_id->type()) { + case ControlTypeBool: { + bool def; + if (ctrl_info.def().isNone()) + def = ctrl_info.min().get<bool>(); + else + def = ctrl_info.def().get<bool>(); + + spa_pod_builder_add(&b, + SPA_PROP_INFO_type, SPA_POD_CHOICE_Bool( + def), + 0); + } break; + case ControlTypeFloat: { + float min = ctrl_info.min().get<float>(); + float max = ctrl_info.max().get<float>(); + float def; + + if (ctrl_info.def().isNone()) + def = (min + max) / 2; + else + def = ctrl_info.def().get<float>(); + + spa_pod_builder_add(&b, + SPA_PROP_INFO_type, SPA_POD_CHOICE_RANGE_Float( + def, min, max), + 0); + } break; + case ControlTypeInteger32: { + int32_t min = ctrl_info.min().get<int32_t>(); + int32_t max = ctrl_info.max().get<int32_t>(); + int32_t def; + + if (ctrl_info.def().isNone()) + def = (min + max) / 2; + else + def = ctrl_info.def().get<int32_t>(); + + spa_pod_builder_add(&b, + SPA_PROP_INFO_type, SPA_POD_CHOICE_RANGE_Int( + def, min, max), + 0); + } break; + default: + goto next; + } + + ctrl = (struct spa_pod*) spa_pod_builder_pop(&b, &f[0]); + + if (spa_pod_filter(&b, &result.param, ctrl, filter) < 0) + goto next; + + spa_node_emit_result(&impl->hooks, seq, 0, SPA_RESULT_TYPE_NODE_PARAMS, &result); + + if (++count != num) + goto next; + +enum_end: + res = 0; + return res; +} + +struct val { + uint32_t type; + float f_val; + int32_t i_val; + bool b_val; + uint32_t id; +}; + +static int do_update_ctrls(struct spa_loop *loop, + bool async, + uint32_t seq, + const void *data, + size_t size, + void *user_data) +{ + struct impl *impl = (struct impl *)user_data; + const struct val *d = (const struct val *)data; + switch (d->type) { + case ControlTypeBool: + impl->ctrls.set(d->id, d->b_val); + break; + case ControlTypeFloat: + impl->ctrls.set(d->id, d->f_val); + break; + case ControlTypeInteger32: + //impl->ctrls.set(d->id, (int32_t)d->i_val); + break; + default: + break; + } + return 0; +} + +static int +spa_libcamera_set_control(struct impl *impl, const struct spa_pod_prop *prop) +{ + const ControlInfoMap &info = impl->camera->controls(); + const ControlId *ctrl_id; + int res; + struct val d; + + auto v = info.idmap().find(prop->key); + if (v == info.idmap().end()) + return -ENOENT; + + ctrl_id = v->second; + + d.type = ctrl_id->type(); + d.id = ctrl_id->id(); + + switch (d.type) { + case ControlTypeBool: + if ((res = spa_pod_get_bool(&prop->value, &d.b_val)) < 0) + goto done; + break; + case ControlTypeFloat: + if ((res = spa_pod_get_float(&prop->value, &d.f_val)) < 0) + goto done; + break; + case ControlTypeInteger32: + if ((res = spa_pod_get_int(&prop->value, &d.i_val)) < 0) + goto done; + break; + default: + res = -EINVAL; + goto done; + } + spa_loop_invoke(impl->data_loop, do_update_ctrls, 0, &d, sizeof(d), true, impl); + res = 0; +done: + return res; +} + + +static void libcamera_on_fd_events(struct spa_source *source) +{ + struct impl *impl = (struct impl*) source->data; + struct spa_io_buffers *io; + struct port *port = &impl->out_ports[0]; + uint32_t index, buffer_id; + struct buffer *b; + uint64_t cnt; + + if (source->rmask & SPA_IO_ERR) { + spa_log_error(impl->log, "libcamera %p: error %08x", impl, source->rmask); + if (impl->source.loop) + spa_loop_remove_source(impl->data_loop, &impl->source); + return; + } + + if (!(source->rmask & SPA_IO_IN)) { + spa_log_warn(impl->log, "libcamera %p: spurious wakeup %d", impl, source->rmask); + return; + } + + if (spa_system_eventfd_read(impl->system, impl->source.fd, &cnt) < 0) { + spa_log_error(impl->log, "Failed to read on event fd"); + return; + } + + if (spa_ringbuffer_get_read_index(&port->ring, &index) < 1) { + spa_log_error(impl->log, "nothing is queued"); + return; + } + buffer_id = port->ring_ids[index & MASK_BUFFERS]; + spa_ringbuffer_read_update(&port->ring, index + 1); + + b = &port->buffers[buffer_id]; + spa_list_append(&port->queue, &b->link); + + io = port->io; + if (io == NULL) { + b = spa_list_first(&port->queue, struct buffer, link); + spa_list_remove(&b->link); + SPA_FLAG_SET(b->flags, BUFFER_FLAG_OUTSTANDING); + spa_libcamera_buffer_recycle(impl, port, b->id); + } else if (io->status != SPA_STATUS_HAVE_DATA) { + if (io->buffer_id < port->n_buffers) + spa_libcamera_buffer_recycle(impl, port, io->buffer_id); + + b = spa_list_first(&port->queue, struct buffer, link); + spa_list_remove(&b->link); + SPA_FLAG_SET(b->flags, BUFFER_FLAG_OUTSTANDING); + + io->buffer_id = b->id; + io->status = SPA_STATUS_HAVE_DATA; + spa_log_trace(impl->log, "libcamera %p: now queued %d", impl, b->id); + } + spa_node_call_ready(&impl->callbacks, SPA_STATUS_HAVE_DATA); +} + +static int spa_libcamera_use_buffers(struct impl *impl, struct port *port, + struct spa_buffer **buffers, uint32_t n_buffers) +{ + return -ENOTSUP; +} + +static const struct { + Transform libcamera_transform; + uint32_t spa_transform_value; +} transform_map[] = { + { Transform::Identity, SPA_META_TRANSFORMATION_None }, + { Transform::Rot0, SPA_META_TRANSFORMATION_None }, + { Transform::HFlip, SPA_META_TRANSFORMATION_Flipped }, + { Transform::VFlip, SPA_META_TRANSFORMATION_Flipped180 }, + { Transform::HVFlip, SPA_META_TRANSFORMATION_180 }, + { Transform::Rot180, SPA_META_TRANSFORMATION_180 }, + { Transform::Transpose, SPA_META_TRANSFORMATION_Flipped90 }, + { Transform::Rot90, SPA_META_TRANSFORMATION_90 }, + { Transform::Rot270, SPA_META_TRANSFORMATION_270 }, + { Transform::Rot180Transpose, SPA_META_TRANSFORMATION_Flipped270 }, +}; + +static uint32_t libcamera_transform_to_spa_transform_value(Transform transform) +{ + for (const auto& t : transform_map) { + if (t.libcamera_transform == transform) + return t.spa_transform_value; + } + return SPA_META_TRANSFORMATION_None; +} + +static int +mmap_init(struct impl *impl, struct port *port, + struct spa_buffer **buffers, uint32_t n_buffers) +{ + unsigned int i, j; + struct spa_data *d; + Stream *stream = impl->config->at(0).stream(); + const std::vector<std::unique_ptr<FrameBuffer>> &bufs = + impl->allocator->buffers(stream); + + if (n_buffers > 0) { + if (bufs.size() != n_buffers) + return -EINVAL; + + d = buffers[0]->datas; + + if (d[0].type != SPA_ID_INVALID && + d[0].type & (1u << SPA_DATA_DmaBuf)) { + port->memtype = SPA_DATA_DmaBuf; + } else if (d[0].type != SPA_ID_INVALID && + d[0].type & (1u << SPA_DATA_MemFd)) { + port->memtype = SPA_DATA_MemFd; + } else if (d[0].type & (1u << SPA_DATA_MemPtr)) { + port->memtype = SPA_DATA_MemPtr; + } else { + spa_log_error(impl->log, "v4l2: can't use buffers of type %d", d[0].type); + return -EINVAL; + } + } + + for (i = 0; i < n_buffers; i++) { + struct buffer *b; + + if (buffers[i]->n_datas < 1) { + spa_log_error(impl->log, "invalid buffer data"); + return -EINVAL; + } + + b = &port->buffers[i]; + b->id = i; + b->outbuf = buffers[i]; + b->flags = BUFFER_FLAG_OUTSTANDING; + b->h = (struct spa_meta_header*)spa_buffer_find_meta_data(buffers[i], SPA_META_Header, sizeof(*b->h)); + + b->videotransform = (struct spa_meta_videotransform*)spa_buffer_find_meta_data( + buffers[i], SPA_META_VideoTransform, sizeof(*b->videotransform)); + if (b->videotransform) { + b->videotransform->transform = + libcamera_transform_to_spa_transform_value(impl->config->transform); + spa_log_debug(impl->log, "Setting videotransform for buffer %d to %u (from %s)", + i, b->videotransform->transform, transformToString(impl->config->transform)); + + } + + d = buffers[i]->datas; + for(j = 0; j < buffers[i]->n_datas; ++j) { + d[j].type = port->memtype; + d[j].flags = SPA_DATA_FLAG_READABLE; + d[j].mapoffset = 0; + d[j].maxsize = port->streamConfig.frameSize; + d[j].chunk->offset = 0; + d[j].chunk->size = port->streamConfig.frameSize; + d[j].chunk->stride = port->streamConfig.stride; + d[j].chunk->flags = 0; + + if (port->memtype == SPA_DATA_DmaBuf || + port->memtype == SPA_DATA_MemFd) { + d[j].fd = bufs[i]->planes()[j].fd.get(); + spa_log_debug(impl->log, "Got fd = %ld for buffer: #%d", d[j].fd, i); + d[j].data = NULL; + SPA_FLAG_SET(b->flags, BUFFER_FLAG_ALLOCATED); + } + else if(port->memtype == SPA_DATA_MemPtr) { + d[j].fd = -1; + d[j].data = mmap(NULL, + d[j].maxsize + d[j].mapoffset, + PROT_READ, MAP_SHARED, + bufs[i]->planes()[j].fd.get(), + 0); + if (d[j].data == MAP_FAILED) { + spa_log_error(impl->log, "mmap: %m"); + continue; + } + b->ptr = d[j].data; + SPA_FLAG_SET(b->flags, BUFFER_FLAG_MAPPED); + spa_log_debug(impl->log, "mmap ptr:%p", d[j].data); + } else { + spa_log_error(impl->log, "invalid buffer type"); + return -EIO; + } + } + spa_libcamera_buffer_recycle(impl, port, i); + } + port->n_buffers = n_buffers; + spa_log_debug(impl->log, "we have %d buffers", n_buffers); + + return 0; +} + +static int +spa_libcamera_alloc_buffers(struct impl *impl, struct port *port, + struct spa_buffer **buffers, + uint32_t n_buffers) +{ + int res; + + if (port->n_buffers > 0) + return -EIO; + + if ((res = mmap_init(impl, port, buffers, n_buffers)) < 0) + return res; + + return 0; +} + + +void impl::requestComplete(libcamera::Request *request) +{ + struct impl *impl = this; + struct port *port = &impl->out_ports[0]; + Stream *stream = port->streamConfig.stream(); + uint32_t index, buffer_id; + struct buffer *b; + + spa_log_debug(impl->log, "request complete"); + + buffer_id = request->cookie(); + b = &port->buffers[buffer_id]; + + if ((request->status() == Request::RequestCancelled)) { + spa_log_debug(impl->log, "Request was cancelled"); + request->reuse(); + SPA_FLAG_SET(b->flags, BUFFER_FLAG_OUTSTANDING); + spa_libcamera_buffer_recycle(impl, port, b->id); + return; + } + FrameBuffer *buffer = request->findBuffer(stream); + if (buffer == nullptr) { + spa_log_warn(impl->log, "unknown buffer"); + return; + } + const FrameMetadata &fmd = buffer->metadata(); + + + + if (impl->clock) { + impl->clock->nsec = fmd.timestamp; + impl->clock->rate = port->rate; + impl->clock->position = fmd.sequence; + impl->clock->duration = 1; + impl->clock->delay = 0; + impl->clock->rate_diff = 1.0; + impl->clock->next_nsec = fmd.timestamp; + } + if (b->h) { + b->h->flags = 0; + b->h->offset = 0; + b->h->seq = fmd.sequence; + b->h->pts = fmd.timestamp; + b->h->dts_offset = 0; + } + request->reuse(); + + spa_ringbuffer_get_write_index(&port->ring, &index); + port->ring_ids[index & MASK_BUFFERS] = buffer_id; + spa_ringbuffer_write_update(&port->ring, index + 1); + + if (spa_system_eventfd_write(impl->system, impl->source.fd, 1) < 0) + spa_log_error(impl->log, "Failed to write on event fd"); + +} + +static int spa_libcamera_stream_on(struct impl *impl) +{ + struct port *port = &impl->out_ports[0]; + int res; + + if (!port->current_format) { + spa_log_error(impl->log, "Exting %s with -EIO", __FUNCTION__); + return -EIO; + } + + if (impl->active) + return 0; + + impl->camera->requestCompleted.connect(impl, &impl::requestComplete); + + spa_log_info(impl->log, "starting camera %s", impl->device_id.c_str()); + if ((res = impl->camera->start()) < 0) + goto error; + + for (Request *req : impl->pendingRequests) { + if ((res = impl->camera->queueRequest(req)) < 0) + goto error_stop; + } + impl->pendingRequests.clear(); + + impl->source.func = libcamera_on_fd_events; + impl->source.data = impl; + impl->source.fd = spa_system_eventfd_create(impl->system, SPA_FD_CLOEXEC | SPA_FD_NONBLOCK); + impl->source.mask = SPA_IO_IN | SPA_IO_ERR; + impl->source.rmask = 0; + if (impl->source.fd < 0) { + spa_log_error(impl->log, "Failed to create eventfd: %s", spa_strerror(impl->source.fd)); + res = impl->source.fd; + goto error_stop; + } + spa_loop_add_source(impl->data_loop, &impl->source); + + impl->active = true; + + return 0; + +error_stop: + impl->camera->stop(); +error: + impl->camera->requestCompleted.disconnect(impl, &impl::requestComplete); + return res == -EACCES ? -EBUSY : res; +} + +static int do_remove_source(struct spa_loop *loop, + bool async, + uint32_t seq, + const void *data, + size_t size, + void *user_data) +{ + struct impl *impl = (struct impl *)user_data; + if (impl->source.loop) + spa_loop_remove_source(loop, &impl->source); + return 0; +} + +static int spa_libcamera_stream_off(struct impl *impl) +{ + struct port *port = &impl->out_ports[0]; + int res; + + if (!impl->active) { + for (std::unique_ptr<Request> &req : impl->requestPool) + req->reuse(); + return 0; + } + + impl->active = false; + spa_log_info(impl->log, "stopping camera %s", impl->device_id.c_str()); + impl->pendingRequests.clear(); + + if ((res = impl->camera->stop()) < 0) { + spa_log_warn(impl->log, "error stopping camera %s: %s", + impl->device_id.c_str(), spa_strerror(res)); + } + + impl->camera->requestCompleted.disconnect(impl, &impl::requestComplete); + + spa_loop_invoke(impl->data_loop, do_remove_source, 0, NULL, 0, true, impl); + if (impl->source.fd >= 0) { + spa_system_close(impl->system, impl->source.fd); + impl->source.fd = -1; + } + + spa_list_init(&port->queue); + + return 0; +} diff --git a/spa/plugins/libcamera/libcamera.c b/spa/plugins/libcamera/libcamera.c new file mode 100644 index 0000000..bcf24d2 --- /dev/null +++ b/spa/plugins/libcamera/libcamera.c @@ -0,0 +1,57 @@ +/* Spa libcamera support + * + * Copyright © 2020 collabora + * + * 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 <spa/support/plugin.h> +#include <spa/support/log.h> + +#include "libcamera.h" + +struct spa_log_topic log_topic = SPA_LOG_TOPIC(0, "spa.libcamera"); +struct spa_log_topic *libcamera_log_topic = &log_topic; + +SPA_EXPORT +int spa_handle_factory_enum(const struct spa_handle_factory **factory, + uint32_t *index) +{ + spa_return_val_if_fail(factory != NULL, -EINVAL); + spa_return_val_if_fail(index != NULL, -EINVAL); + + switch (*index) { + case 0: + *factory = &spa_libcamera_manager_factory; + break; + case 1: + *factory = &spa_libcamera_device_factory; + break; + case 2: + *factory = &spa_libcamera_source_factory; + break; + default: + return 0; + } + (*index)++; + return 1; +} diff --git a/spa/plugins/libcamera/libcamera.h b/spa/plugins/libcamera/libcamera.h new file mode 100644 index 0000000..1a4d618 --- /dev/null +++ b/spa/plugins/libcamera/libcamera.h @@ -0,0 +1,51 @@ +/* Spa libcamera support + * + * Copyright © 2020 collabora + * + * 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 <linux/media.h> + +#include <spa/support/log.h> +#include <spa/support/system.h> + +#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */ + +extern const struct spa_handle_factory spa_libcamera_source_factory; +extern const struct spa_handle_factory spa_libcamera_manager_factory; +extern const struct spa_handle_factory spa_libcamera_device_factory; + +#undef SPA_LOG_TOPIC_DEFAULT +#define SPA_LOG_TOPIC_DEFAULT libcamera_log_topic +extern struct spa_log_topic *libcamera_log_topic; + +static inline void libcamera_log_topic_init(struct spa_log *log) +{ + spa_log_topic_init(log, libcamera_log_topic); +} + +#ifdef __cplusplus +} +#endif /* __cplusplus */ diff --git a/spa/plugins/libcamera/meson.build b/spa/plugins/libcamera/meson.build new file mode 100644 index 0000000..abb1a42 --- /dev/null +++ b/spa/plugins/libcamera/meson.build @@ -0,0 +1,17 @@ +libcamera_sources = [ + 'libcamera.c', + 'libcamera-manager.cpp', + 'libcamera-device.cpp', + 'libcamera-source.cpp' +] + +libdrm_dep = dependency('libdrm', version : '>= 2.4.98', + required : get_option('libcamera')) +summary({'libdrm': libdrm_dep.found()}, bool_yn: true, section: 'Backend') +if libdrm_dep.found() + libcameralib = shared_library('spa-libcamera', + libcamera_sources, + dependencies : [ spa_dep, libudev_dep, libcamera_dep, pthread_lib, libdrm_dep ], + install : true, + install_dir : spa_plugindir / 'libcamera') +endif |