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-rw-r--r--spa/plugins/libcamera/libcamera-source.cpp1073
1 files changed, 1073 insertions, 0 deletions
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, &param, &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, &param, &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,
+};
+}