/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */ /* * Copyright (C) 2015-2017 Red Hat Inc. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of the * License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA * 02111-1307, USA. * */ #include "config.h" #include "backends/meta-screen-cast-stream-src.h" #include #include #include #include #include #include #include #include "backends/meta-screen-cast-session.h" #include "backends/meta-screen-cast-stream.h" #include "clutter/clutter-mutter.h" #include "core/meta-fraction.h" #include "meta/boxes.h" #define PRIVATE_OWNER_FROM_FIELD(TypeName, field_ptr, field_name) \ (TypeName *)((guint8 *)(field_ptr) - G_PRIVATE_OFFSET (TypeName, field_name)) #define CURSOR_META_SIZE(width, height) \ (sizeof (struct spa_meta_cursor) + \ sizeof (struct spa_meta_bitmap) + width * height * 4) enum { PROP_0, PROP_STREAM, }; enum { READY, CLOSED, N_SIGNALS }; static guint signals[N_SIGNALS]; typedef struct _MetaPipeWireSource { GSource base; struct pw_loop *pipewire_loop; } MetaPipeWireSource; typedef struct _MetaScreenCastStreamSrcPrivate { MetaScreenCastStream *stream; struct pw_core *pipewire_core; struct pw_remote *pipewire_remote; struct pw_type *pipewire_type; MetaPipeWireSource *pipewire_source; struct spa_hook pipewire_remote_listener; gboolean is_enabled; struct pw_stream *pipewire_stream; struct spa_hook pipewire_stream_listener; MetaSpaType spa_type; struct spa_video_info_raw video_format; uint64_t last_frame_timestamp_us; int stream_width; int stream_height; } MetaScreenCastStreamSrcPrivate; static void meta_screen_cast_stream_src_init_initable_iface (GInitableIface *iface); G_DEFINE_TYPE_WITH_CODE (MetaScreenCastStreamSrc, meta_screen_cast_stream_src, G_TYPE_OBJECT, G_IMPLEMENT_INTERFACE (G_TYPE_INITABLE, meta_screen_cast_stream_src_init_initable_iface) G_ADD_PRIVATE (MetaScreenCastStreamSrc)) #define PROP_RANGE(min, max) 2, (min), (max) static void meta_screen_cast_stream_src_get_specs (MetaScreenCastStreamSrc *src, int *width, int *height, float *frame_rate) { MetaScreenCastStreamSrcClass *klass = META_SCREEN_CAST_STREAM_SRC_GET_CLASS (src); klass->get_specs (src, width, height, frame_rate); } static gboolean meta_screen_cast_stream_src_get_videocrop (MetaScreenCastStreamSrc *src, MetaRectangle *crop_rect) { MetaScreenCastStreamSrcClass *klass = META_SCREEN_CAST_STREAM_SRC_GET_CLASS (src); if (klass->get_videocrop) return klass->get_videocrop (src, crop_rect); return FALSE; } static gboolean meta_screen_cast_stream_src_record_frame (MetaScreenCastStreamSrc *src, uint8_t *data) { MetaScreenCastStreamSrcClass *klass = META_SCREEN_CAST_STREAM_SRC_GET_CLASS (src); return klass->record_frame (src, data); } static void meta_screen_cast_stream_src_set_cursor_metadata (MetaScreenCastStreamSrc *src, struct spa_meta_cursor *spa_meta_cursor) { MetaScreenCastStreamSrcClass *klass = META_SCREEN_CAST_STREAM_SRC_GET_CLASS (src); if (klass->set_cursor_metadata) klass->set_cursor_metadata (src, spa_meta_cursor); } MetaSpaType * meta_screen_cast_stream_src_get_spa_type (MetaScreenCastStreamSrc *src) { MetaScreenCastStreamSrcPrivate *priv = meta_screen_cast_stream_src_get_instance_private (src); return &priv->spa_type; } static gboolean draw_cursor_sprite_via_offscreen (MetaScreenCastStreamSrc *src, CoglTexture *cursor_texture, int bitmap_width, int bitmap_height, uint8_t *bitmap_data, GError **error) { MetaScreenCastStream *stream = meta_screen_cast_stream_src_get_stream (src); MetaScreenCastSession *session = meta_screen_cast_stream_get_session (stream); MetaScreenCast *screen_cast = meta_screen_cast_session_get_screen_cast (session); MetaBackend *backend = meta_screen_cast_get_backend (screen_cast); ClutterBackend *clutter_backend = meta_backend_get_clutter_backend (backend); CoglContext *cogl_context = clutter_backend_get_cogl_context (clutter_backend); CoglTexture2D *bitmap_texture; CoglOffscreen *offscreen; CoglFramebuffer *fb; CoglPipeline *pipeline; CoglColor clear_color; bitmap_texture = cogl_texture_2d_new_with_size (cogl_context, bitmap_width, bitmap_height); cogl_primitive_texture_set_auto_mipmap (COGL_PRIMITIVE_TEXTURE (bitmap_texture), FALSE); if (!cogl_texture_allocate (COGL_TEXTURE (bitmap_texture), error)) { cogl_object_unref (bitmap_texture); return FALSE; } offscreen = cogl_offscreen_new_with_texture (COGL_TEXTURE (bitmap_texture)); fb = COGL_FRAMEBUFFER (offscreen); cogl_object_unref (bitmap_texture); if (!cogl_framebuffer_allocate (fb, error)) { cogl_object_unref (fb); return FALSE; } pipeline = cogl_pipeline_new (cogl_context); cogl_pipeline_set_layer_texture (pipeline, 0, cursor_texture); cogl_pipeline_set_layer_filters (pipeline, 0, COGL_PIPELINE_FILTER_LINEAR, COGL_PIPELINE_FILTER_LINEAR); cogl_color_init_from_4ub (&clear_color, 0, 0, 0, 0); cogl_framebuffer_clear (fb, COGL_BUFFER_BIT_COLOR, &clear_color); cogl_framebuffer_draw_rectangle (fb, pipeline, -1, 1, 1, -1); cogl_object_unref (pipeline); cogl_framebuffer_read_pixels (fb, 0, 0, bitmap_width, bitmap_height, COGL_PIXEL_FORMAT_RGBA_8888_PRE, bitmap_data); cogl_object_unref (fb); return TRUE; } void meta_screen_cast_stream_src_unset_cursor_metadata (MetaScreenCastStreamSrc *src, struct spa_meta_cursor *spa_meta_cursor) { spa_meta_cursor->id = 1; } void meta_screen_cast_stream_src_set_cursor_position_metadata (MetaScreenCastStreamSrc *src, struct spa_meta_cursor *spa_meta_cursor, int x, int y) { spa_meta_cursor->id = 1; spa_meta_cursor->position.x = x; spa_meta_cursor->position.y = y; spa_meta_cursor->hotspot.x = 0; spa_meta_cursor->hotspot.y = 0; spa_meta_cursor->bitmap_offset = 0; } void meta_screen_cast_stream_src_set_empty_cursor_sprite_metadata (MetaScreenCastStreamSrc *src, struct spa_meta_cursor *spa_meta_cursor, int x, int y) { MetaScreenCastStreamSrcPrivate *priv = meta_screen_cast_stream_src_get_instance_private (src); MetaSpaType *spa_type = &priv->spa_type; struct spa_meta_bitmap *spa_meta_bitmap; spa_meta_cursor->id = 1; spa_meta_cursor->position.x = x; spa_meta_cursor->position.y = y; spa_meta_cursor->bitmap_offset = sizeof (struct spa_meta_cursor); spa_meta_bitmap = SPA_MEMBER (spa_meta_cursor, spa_meta_cursor->bitmap_offset, struct spa_meta_bitmap); spa_meta_bitmap->format = spa_type->video_format.RGBA; spa_meta_bitmap->offset = sizeof (struct spa_meta_bitmap); spa_meta_cursor->hotspot.x = 0; spa_meta_cursor->hotspot.y = 0; *spa_meta_bitmap = (struct spa_meta_bitmap) { 0 }; } void meta_screen_cast_stream_src_set_cursor_sprite_metadata (MetaScreenCastStreamSrc *src, struct spa_meta_cursor *spa_meta_cursor, MetaCursorSprite *cursor_sprite, int x, int y, float scale) { MetaScreenCastStreamSrcPrivate *priv = meta_screen_cast_stream_src_get_instance_private (src); MetaSpaType *spa_type = &priv->spa_type; CoglTexture *cursor_texture; struct spa_meta_bitmap *spa_meta_bitmap; int hotspot_x, hotspot_y; int texture_width, texture_height; int bitmap_width, bitmap_height; uint8_t *bitmap_data; cursor_texture = meta_cursor_sprite_get_cogl_texture (cursor_sprite); if (!cursor_texture) { meta_screen_cast_stream_src_set_empty_cursor_sprite_metadata (src, spa_meta_cursor, x, y); return; } spa_meta_cursor->id = 1; spa_meta_cursor->position.x = x; spa_meta_cursor->position.y = y; spa_meta_cursor->bitmap_offset = sizeof (struct spa_meta_cursor); spa_meta_bitmap = SPA_MEMBER (spa_meta_cursor, spa_meta_cursor->bitmap_offset, struct spa_meta_bitmap); spa_meta_bitmap->format = spa_type->video_format.RGBA; spa_meta_bitmap->offset = sizeof (struct spa_meta_bitmap); meta_cursor_sprite_get_hotspot (cursor_sprite, &hotspot_x, &hotspot_y); spa_meta_cursor->hotspot.x = (int32_t) roundf (hotspot_x * scale); spa_meta_cursor->hotspot.y = (int32_t) roundf (hotspot_y * scale); texture_width = cogl_texture_get_width (cursor_texture); texture_height = cogl_texture_get_height (cursor_texture); bitmap_width = texture_width * scale; bitmap_height = texture_height * scale; spa_meta_bitmap->size.width = bitmap_width; spa_meta_bitmap->size.height = bitmap_height; spa_meta_bitmap->stride = bitmap_width * 4; bitmap_data = SPA_MEMBER (spa_meta_bitmap, spa_meta_bitmap->offset, uint8_t); if (texture_width == bitmap_width && texture_height == bitmap_height) { cogl_texture_get_data (cursor_texture, COGL_PIXEL_FORMAT_RGBA_8888_PRE, texture_width * 4, bitmap_data); } else { GError *error = NULL; if (!draw_cursor_sprite_via_offscreen (src, cursor_texture, bitmap_width, bitmap_height, bitmap_data, &error)) { g_warning ("Failed to draw cursor via offscreen: %s", error->message); g_error_free (error); spa_meta_cursor->id = 0; } } } static void add_cursor_metadata (MetaScreenCastStreamSrc *src, struct spa_buffer *spa_buffer) { MetaScreenCastStreamSrcPrivate *priv = meta_screen_cast_stream_src_get_instance_private (src); MetaSpaType *spa_type = &priv->spa_type; struct spa_meta_cursor *spa_meta_cursor; spa_meta_cursor = spa_buffer_find_meta (spa_buffer, spa_type->meta_cursor); if (spa_meta_cursor) meta_screen_cast_stream_src_set_cursor_metadata (src, spa_meta_cursor); } static void maybe_record_cursor (MetaScreenCastStreamSrc *src, struct spa_buffer *spa_buffer, uint8_t *data) { MetaScreenCastStream *stream = meta_screen_cast_stream_src_get_stream (src); switch (meta_screen_cast_stream_get_cursor_mode (stream)) { case META_SCREEN_CAST_CURSOR_MODE_HIDDEN: case META_SCREEN_CAST_CURSOR_MODE_EMBEDDED: return; case META_SCREEN_CAST_CURSOR_MODE_METADATA: add_cursor_metadata (src, spa_buffer); return; } g_assert_not_reached (); } void meta_screen_cast_stream_src_maybe_record_frame (MetaScreenCastStreamSrc *src) { MetaScreenCastStreamSrcPrivate *priv = meta_screen_cast_stream_src_get_instance_private (src); MetaRectangle crop_rect; struct pw_buffer *buffer; struct spa_buffer *spa_buffer; uint8_t *map = NULL; uint8_t *data; uint64_t now_us; now_us = g_get_monotonic_time (); if (priv->last_frame_timestamp_us != 0 && (now_us - priv->last_frame_timestamp_us < ((1000000 * priv->video_format.max_framerate.denom) / priv->video_format.max_framerate.num))) return; if (!priv->pipewire_stream) return; buffer = pw_stream_dequeue_buffer (priv->pipewire_stream); if (!buffer) { g_warning ("Failed to dequeue at PipeWire buffer"); return; } spa_buffer = buffer->buffer; if (spa_buffer->datas[0].data) { data = spa_buffer->datas[0].data; } else if (spa_buffer->datas[0].type == priv->pipewire_type->data.MemFd) { map = mmap (NULL, spa_buffer->datas[0].maxsize + spa_buffer->datas[0].mapoffset, PROT_READ | PROT_WRITE, MAP_SHARED, spa_buffer->datas[0].fd, 0); if (map == MAP_FAILED) { g_warning ("Failed to mmap pipewire stream buffer: %s\n", strerror (errno)); return; } data = SPA_MEMBER (map, spa_buffer->datas[0].mapoffset, uint8_t); } else { g_warning ("Unhandled spa buffer type: %d", spa_buffer->datas[0].type); return; } if (meta_screen_cast_stream_src_record_frame (src, data)) { struct spa_meta_video_crop *spa_meta_video_crop; spa_buffer->datas[0].chunk->size = spa_buffer->datas[0].maxsize; /* Update VideoCrop if needed */ spa_meta_video_crop = spa_buffer_find_meta (spa_buffer, priv->pipewire_type->meta.VideoCrop); if (spa_meta_video_crop) { if (meta_screen_cast_stream_src_get_videocrop (src, &crop_rect)) { spa_meta_video_crop->x = crop_rect.x; spa_meta_video_crop->y = crop_rect.y; spa_meta_video_crop->width = crop_rect.width; spa_meta_video_crop->height = crop_rect.height; } else { spa_meta_video_crop->x = 0; spa_meta_video_crop->y = 0; spa_meta_video_crop->width = priv->stream_width; spa_meta_video_crop->height = priv->stream_height; } } } else { spa_buffer->datas[0].chunk->size = 0; } maybe_record_cursor (src, spa_buffer, data); priv->last_frame_timestamp_us = now_us; if (map) munmap (map, spa_buffer->datas[0].maxsize + spa_buffer->datas[0].mapoffset); pw_stream_queue_buffer (priv->pipewire_stream, buffer); } static gboolean meta_screen_cast_stream_src_is_enabled (MetaScreenCastStreamSrc *src) { MetaScreenCastStreamSrcPrivate *priv = meta_screen_cast_stream_src_get_instance_private (src); return priv->is_enabled; } static void meta_screen_cast_stream_src_enable (MetaScreenCastStreamSrc *src) { MetaScreenCastStreamSrcPrivate *priv = meta_screen_cast_stream_src_get_instance_private (src); META_SCREEN_CAST_STREAM_SRC_GET_CLASS (src)->enable (src); priv->is_enabled = TRUE; } static void meta_screen_cast_stream_src_disable (MetaScreenCastStreamSrc *src) { MetaScreenCastStreamSrcPrivate *priv = meta_screen_cast_stream_src_get_instance_private (src); META_SCREEN_CAST_STREAM_SRC_GET_CLASS (src)->disable (src); priv->is_enabled = FALSE; } static void meta_screen_cast_stream_src_notify_closed (MetaScreenCastStreamSrc *src) { g_signal_emit (src, signals[CLOSED], 0); } static void on_stream_state_changed (void *data, enum pw_stream_state old, enum pw_stream_state state, const char *error_message) { MetaScreenCastStreamSrc *src = data; MetaScreenCastStreamSrcPrivate *priv = meta_screen_cast_stream_src_get_instance_private (src); uint32_t node_id; switch (state) { case PW_STREAM_STATE_ERROR: g_warning ("pipewire stream error: %s", error_message); meta_screen_cast_stream_src_notify_closed (src); break; case PW_STREAM_STATE_CONFIGURE: node_id = pw_stream_get_node_id (priv->pipewire_stream); g_signal_emit (src, signals[READY], 0, (unsigned int) node_id); break; case PW_STREAM_STATE_UNCONNECTED: case PW_STREAM_STATE_CONNECTING: case PW_STREAM_STATE_READY: case PW_STREAM_STATE_PAUSED: if (meta_screen_cast_stream_src_is_enabled (src)) meta_screen_cast_stream_src_disable (src); break; case PW_STREAM_STATE_STREAMING: if (!meta_screen_cast_stream_src_is_enabled (src)) meta_screen_cast_stream_src_enable (src); break; } } static void on_stream_format_changed (void *data, const struct spa_pod *format) { MetaScreenCastStreamSrc *src = data; MetaScreenCastStreamSrcPrivate *priv = meta_screen_cast_stream_src_get_instance_private (src); struct pw_type *pipewire_type = priv->pipewire_type; uint8_t params_buffer[1024]; int32_t width, height, stride, size; struct spa_pod_builder pod_builder; const struct spa_pod *params[3]; const int bpp = 4; if (!format) { pw_stream_finish_format (priv->pipewire_stream, 0, NULL, 0); return; } spa_format_video_raw_parse (format, &priv->video_format, &priv->spa_type.format_video); width = priv->video_format.size.width; height = priv->video_format.size.height; stride = SPA_ROUND_UP_N (width * bpp, 4); size = height * stride; pod_builder = SPA_POD_BUILDER_INIT (params_buffer, sizeof (params_buffer)); params[0] = spa_pod_builder_object ( &pod_builder, pipewire_type->param.idBuffers, pipewire_type->param_buffers.Buffers, ":", pipewire_type->param_buffers.size, "i", size, ":", pipewire_type->param_buffers.stride, "i", stride, ":", pipewire_type->param_buffers.buffers, "iru", 16, PROP_RANGE (2, 16), ":", pipewire_type->param_buffers.align, "i", 16); params[1] = spa_pod_builder_object ( &pod_builder, pipewire_type->param.idMeta, pipewire_type->param_meta.Meta, ":", pipewire_type->param_meta.type, "I", pipewire_type->meta.VideoCrop, ":", pipewire_type->param_meta.size, "i", sizeof (struct spa_meta_video_crop)); params[2] = spa_pod_builder_object ( &pod_builder, pipewire_type->param.idMeta, pipewire_type->param_meta.Meta, ":", pipewire_type->param_meta.type, "I", priv->spa_type.meta_cursor, ":", pipewire_type->param_meta.size, "i", CURSOR_META_SIZE (64, 64)); pw_stream_finish_format (priv->pipewire_stream, 0, params, G_N_ELEMENTS (params)); } static const struct pw_stream_events stream_events = { PW_VERSION_STREAM_EVENTS, .state_changed = on_stream_state_changed, .format_changed = on_stream_format_changed, }; static struct pw_stream * create_pipewire_stream (MetaScreenCastStreamSrc *src, GError **error) { MetaScreenCastStreamSrcPrivate *priv = meta_screen_cast_stream_src_get_instance_private (src); struct pw_stream *pipewire_stream; uint8_t buffer[1024]; struct spa_pod_builder pod_builder = SPA_POD_BUILDER_INIT (buffer, sizeof (buffer)); MetaSpaType *spa_type = &priv->spa_type; struct pw_type *pipewire_type = priv->pipewire_type; float frame_rate; MetaFraction frame_rate_fraction; struct spa_fraction max_framerate; struct spa_fraction min_framerate; const struct spa_pod *params[1]; int result; pipewire_stream = pw_stream_new (priv->pipewire_remote, "meta-screen-cast-src", NULL); if (!pipewire_stream) { g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED, "Failed to create PipeWire stream: %s", strerror (errno)); return NULL; } meta_screen_cast_stream_src_get_specs (src, &priv->stream_width, &priv->stream_height, &frame_rate); frame_rate_fraction = meta_fraction_from_double (frame_rate); min_framerate = SPA_FRACTION (1, 1); max_framerate = SPA_FRACTION (frame_rate_fraction.num, frame_rate_fraction.denom); params[0] = spa_pod_builder_object ( &pod_builder, pipewire_type->param.idEnumFormat, pipewire_type->spa_format, "I", spa_type->media_type.video, "I", spa_type->media_subtype.raw, ":", spa_type->format_video.format, "I", spa_type->video_format.BGRx, ":", spa_type->format_video.size, "R", &SPA_RECTANGLE (priv->stream_width, priv->stream_height), ":", spa_type->format_video.framerate, "F", &SPA_FRACTION (0, 1), ":", spa_type->format_video.max_framerate, "Fru", &max_framerate, PROP_RANGE (&min_framerate, &max_framerate)); pw_stream_add_listener (pipewire_stream, &priv->pipewire_stream_listener, &stream_events, src); result = pw_stream_connect (pipewire_stream, PW_DIRECTION_OUTPUT, NULL, (PW_STREAM_FLAG_DRIVER | PW_STREAM_FLAG_MAP_BUFFERS), params, G_N_ELEMENTS (params)); if (result != 0) { g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED, "Could not connect: %s", spa_strerror (result)); return NULL; } return pipewire_stream; } static void on_state_changed (void *data, enum pw_remote_state old, enum pw_remote_state state, const char *error_message) { MetaScreenCastStreamSrc *src = data; MetaScreenCastStreamSrcPrivate *priv = meta_screen_cast_stream_src_get_instance_private (src); struct pw_stream *pipewire_stream; GError *error = NULL; switch (state) { case PW_REMOTE_STATE_ERROR: g_warning ("pipewire remote error: %s\n", error_message); meta_screen_cast_stream_src_notify_closed (src); break; case PW_REMOTE_STATE_CONNECTED: pipewire_stream = create_pipewire_stream (src, &error); if (!pipewire_stream) { g_warning ("Could not create pipewire stream: %s", error->message); g_error_free (error); meta_screen_cast_stream_src_notify_closed (src); } else { priv->pipewire_stream = pipewire_stream; } break; case PW_REMOTE_STATE_UNCONNECTED: case PW_REMOTE_STATE_CONNECTING: break; } } static gboolean pipewire_loop_source_prepare (GSource *base, int *timeout) { *timeout = -1; return FALSE; } static gboolean pipewire_loop_source_dispatch (GSource *source, GSourceFunc callback, gpointer user_data) { MetaPipeWireSource *pipewire_source = (MetaPipeWireSource *) source; int result; result = pw_loop_iterate (pipewire_source->pipewire_loop, 0); if (result < 0) g_warning ("pipewire_loop_iterate failed: %s", spa_strerror (result)); return TRUE; } static void pipewire_loop_source_finalize (GSource *source) { MetaPipeWireSource *pipewire_source = (MetaPipeWireSource *) source; pw_loop_leave (pipewire_source->pipewire_loop); pw_loop_destroy (pipewire_source->pipewire_loop); } static GSourceFuncs pipewire_source_funcs = { pipewire_loop_source_prepare, NULL, pipewire_loop_source_dispatch, pipewire_loop_source_finalize }; static void init_spa_type (MetaSpaType *type, struct spa_type_map *map) { spa_type_media_type_map (map, &type->media_type); spa_type_media_subtype_map (map, &type->media_subtype); spa_type_format_video_map (map, &type->format_video); spa_type_video_format_map (map, &type->video_format); type->meta_cursor = spa_type_map_get_id(map, SPA_TYPE_META__Cursor); } static MetaPipeWireSource * create_pipewire_source (void) { MetaPipeWireSource *pipewire_source; pipewire_source = (MetaPipeWireSource *) g_source_new (&pipewire_source_funcs, sizeof (MetaPipeWireSource)); pipewire_source->pipewire_loop = pw_loop_new (NULL); if (!pipewire_source->pipewire_loop) { g_source_destroy ((GSource *) pipewire_source); return NULL; } g_source_add_unix_fd (&pipewire_source->base, pw_loop_get_fd (pipewire_source->pipewire_loop), G_IO_IN | G_IO_ERR); pw_loop_enter (pipewire_source->pipewire_loop); g_source_attach (&pipewire_source->base, NULL); return pipewire_source; } static const struct pw_remote_events remote_events = { PW_VERSION_REMOTE_EVENTS, .state_changed = on_state_changed, }; static gboolean meta_screen_cast_stream_src_initable_init (GInitable *initable, GCancellable *cancellable, GError **error) { MetaScreenCastStreamSrc *src = META_SCREEN_CAST_STREAM_SRC (initable); MetaScreenCastStreamSrcPrivate *priv = meta_screen_cast_stream_src_get_instance_private (src); priv->pipewire_source = create_pipewire_source (); if (!priv->pipewire_source) { g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED, "Failed to create PipeWire source"); return FALSE; } priv->pipewire_core = pw_core_new (priv->pipewire_source->pipewire_loop, NULL); if (!priv->pipewire_core) { g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED, "Failed to create pipewire core"); return FALSE; } priv->pipewire_remote = pw_remote_new (priv->pipewire_core, NULL, 0); if (!priv->pipewire_remote) { g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED, "Couldn't creat pipewire remote"); return FALSE; } pw_remote_add_listener (priv->pipewire_remote, &priv->pipewire_remote_listener, &remote_events, src); priv->pipewire_type = pw_core_get_type (priv->pipewire_core); init_spa_type (&priv->spa_type, priv->pipewire_type->map); if (pw_remote_connect (priv->pipewire_remote) != 0) { g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED, "Couldn't connect pipewire remote"); return FALSE; } return TRUE; } static void meta_screen_cast_stream_src_init_initable_iface (GInitableIface *iface) { iface->init = meta_screen_cast_stream_src_initable_init; } MetaScreenCastStream * meta_screen_cast_stream_src_get_stream (MetaScreenCastStreamSrc *src) { MetaScreenCastStreamSrcPrivate *priv = meta_screen_cast_stream_src_get_instance_private (src); return priv->stream; } static void meta_screen_cast_stream_src_finalize (GObject *object) { MetaScreenCastStreamSrc *src = META_SCREEN_CAST_STREAM_SRC (object); MetaScreenCastStreamSrcPrivate *priv = meta_screen_cast_stream_src_get_instance_private (src); if (meta_screen_cast_stream_src_is_enabled (src)) meta_screen_cast_stream_src_disable (src); g_clear_pointer (&priv->pipewire_stream, pw_stream_destroy); g_clear_pointer (&priv->pipewire_remote, pw_remote_destroy); g_clear_pointer (&priv->pipewire_core, pw_core_destroy); g_source_destroy (&priv->pipewire_source->base); G_OBJECT_CLASS (meta_screen_cast_stream_src_parent_class)->finalize (object); } static void meta_screen_cast_stream_src_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { MetaScreenCastStreamSrc *src = META_SCREEN_CAST_STREAM_SRC (object); MetaScreenCastStreamSrcPrivate *priv = meta_screen_cast_stream_src_get_instance_private (src); switch (prop_id) { case PROP_STREAM: priv->stream = g_value_get_object (value); break;; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); } } static void meta_screen_cast_stream_src_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { MetaScreenCastStreamSrc *src = META_SCREEN_CAST_STREAM_SRC (object); MetaScreenCastStreamSrcPrivate *priv = meta_screen_cast_stream_src_get_instance_private (src); switch (prop_id) { case PROP_STREAM: g_value_set_object (value, priv->stream); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); } } static void meta_screen_cast_stream_src_init (MetaScreenCastStreamSrc *src) { } static void meta_screen_cast_stream_src_class_init (MetaScreenCastStreamSrcClass *klass) { GObjectClass *object_class = G_OBJECT_CLASS (klass); object_class->finalize = meta_screen_cast_stream_src_finalize; object_class->set_property = meta_screen_cast_stream_src_set_property; object_class->get_property = meta_screen_cast_stream_src_get_property; g_object_class_install_property (object_class, PROP_STREAM, g_param_spec_object ("stream", "stream", "MetaScreenCastStream", META_TYPE_SCREEN_CAST_STREAM, G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS)); signals[READY] = g_signal_new ("ready", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST, 0, NULL, NULL, NULL, G_TYPE_NONE, 1, G_TYPE_UINT); signals[CLOSED] = g_signal_new ("closed", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST, 0, NULL, NULL, NULL, G_TYPE_NONE, 0); }