9bab8e8751
During animation or other things that cause multiple frames in a row being painted, we might skip recording frames if the max framerate is reached. Doing so means we might end up skipping the last frame in a series, ending with the last frame we sent was not the last one, making things appear to get stuck sometimes. Handle this by creating a timeout if we ever throttle, and at the time the timeout callback is triggered, make sure we eventually send an up to date frame. This is handle differently depending on the source type. A monitor source type reports 1x1 pixel damage on each view its monitor overlaps, while a window source type simply records a frame from the surface directly, except without recording a timestamp, so that timestamps always refer to when damage actually happened. https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1361
613 lines
22 KiB
C
613 lines
22 KiB
C
/*
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* Copyright (C) 2018 Red Hat Inc.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*
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*/
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#include "config.h"
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#include "backends/meta-screen-cast-window-stream-src.h"
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#include "backends/meta-backend-private.h"
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#include "backends/meta-screen-cast-session.h"
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#include "backends/meta-screen-cast-window.h"
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#include "backends/meta-screen-cast-window-stream.h"
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#include "compositor/meta-window-actor-private.h"
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struct _MetaScreenCastWindowStreamSrc
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{
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MetaScreenCastStreamSrc parent;
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MetaScreenCastWindow *screen_cast_window;
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unsigned long screen_cast_window_damaged_handler_id;
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unsigned long screen_cast_window_destroyed_handler_id;
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unsigned long cursor_moved_handler_id;
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unsigned long cursor_changed_handler_id;
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gboolean cursor_bitmap_invalid;
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};
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G_DEFINE_TYPE (MetaScreenCastWindowStreamSrc,
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meta_screen_cast_window_stream_src,
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META_TYPE_SCREEN_CAST_STREAM_SRC)
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static MetaBackend *
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get_backend (MetaScreenCastWindowStreamSrc *window_src)
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{
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MetaScreenCastStreamSrc *src = META_SCREEN_CAST_STREAM_SRC (window_src);
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MetaScreenCastStream *stream = meta_screen_cast_stream_src_get_stream (src);
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MetaScreenCastSession *session = meta_screen_cast_stream_get_session (stream);
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MetaScreenCast *screen_cast =
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meta_screen_cast_session_get_screen_cast (session);
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return meta_screen_cast_get_backend (screen_cast);
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}
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static MetaScreenCastWindowStream *
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get_window_stream (MetaScreenCastWindowStreamSrc *window_src)
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{
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MetaScreenCastStreamSrc *src;
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MetaScreenCastStream *stream;
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src = META_SCREEN_CAST_STREAM_SRC (window_src);
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stream = meta_screen_cast_stream_src_get_stream (src);
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return META_SCREEN_CAST_WINDOW_STREAM (stream);
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}
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static MetaWindow *
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get_window (MetaScreenCastWindowStreamSrc *window_src)
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{
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MetaScreenCastWindowStream *window_stream;
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window_stream = get_window_stream (window_src);
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return meta_screen_cast_window_stream_get_window (window_stream);
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}
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static int
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get_stream_width (MetaScreenCastWindowStreamSrc *window_src)
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{
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MetaScreenCastWindowStream *window_stream;
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window_stream = get_window_stream (window_src);
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return meta_screen_cast_window_stream_get_width (window_stream);
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}
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static int
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get_stream_height (MetaScreenCastWindowStreamSrc *window_src)
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{
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MetaScreenCastWindowStream *window_stream;
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window_stream = get_window_stream (window_src);
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return meta_screen_cast_window_stream_get_height (window_stream);
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}
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static void
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maybe_draw_cursor_sprite (MetaScreenCastWindowStreamSrc *window_src,
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uint8_t *data,
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MetaRectangle *stream_rect)
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{
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MetaScreenCastStreamSrc *src = META_SCREEN_CAST_STREAM_SRC (window_src);
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MetaBackend *backend = get_backend (window_src);
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MetaCursorRenderer *cursor_renderer =
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meta_backend_get_cursor_renderer (backend);
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MetaCursorSprite *cursor_sprite;
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CoglTexture *cursor_texture;
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MetaScreenCastWindow *screen_cast_window;
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graphene_point_t cursor_position;
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graphene_point_t relative_cursor_position;
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cairo_surface_t *cursor_surface;
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uint8_t *cursor_surface_data;
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GError *error = NULL;
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cairo_surface_t *stream_surface;
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int width, height;
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float scale;
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int hotspot_x, hotspot_y;
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cairo_t *cr;
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cursor_sprite = meta_cursor_renderer_get_cursor (cursor_renderer);
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if (!cursor_sprite)
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return;
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cursor_texture = meta_cursor_sprite_get_cogl_texture (cursor_sprite);
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if (!cursor_texture)
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return;
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screen_cast_window = window_src->screen_cast_window;
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cursor_position = meta_cursor_renderer_get_position (cursor_renderer);
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if (!meta_screen_cast_window_transform_cursor_position (screen_cast_window,
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cursor_sprite,
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&cursor_position,
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&scale,
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&relative_cursor_position))
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return;
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meta_cursor_sprite_get_hotspot (cursor_sprite, &hotspot_x, &hotspot_y);
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width = cogl_texture_get_width (cursor_texture) * scale;
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height = cogl_texture_get_height (cursor_texture) * scale;
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cursor_surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
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width, height);
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cursor_surface_data = cairo_image_surface_get_data (cursor_surface);
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if (!meta_screen_cast_stream_src_draw_cursor_into (src,
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cursor_texture,
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scale,
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cursor_surface_data,
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&error))
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{
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g_warning ("Failed to draw cursor: %s", error->message);
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g_error_free (error);
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cairo_surface_destroy (cursor_surface);
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return;
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}
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stream_surface =
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cairo_image_surface_create_for_data (data, CAIRO_FORMAT_ARGB32,
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stream_rect->width,
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stream_rect->height,
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stream_rect->width * 4);
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cr = cairo_create (stream_surface);
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cairo_surface_mark_dirty (cursor_surface);
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cairo_surface_flush (cursor_surface);
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cairo_set_source_surface (cr, cursor_surface,
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relative_cursor_position.x - hotspot_x * scale,
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relative_cursor_position.y - hotspot_y * scale);
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cairo_paint (cr);
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cairo_destroy (cr);
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cairo_surface_destroy (stream_surface);
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cairo_surface_destroy (cursor_surface);
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}
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static void
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maybe_blit_cursor_sprite (MetaScreenCastWindowStreamSrc *window_src,
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CoglFramebuffer *framebuffer,
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MetaRectangle *stream_rect)
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{
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MetaBackend *backend = get_backend (window_src);
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CoglContext *cogl_context =
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clutter_backend_get_cogl_context (clutter_get_default_backend ());
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MetaCursorRenderer *cursor_renderer =
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meta_backend_get_cursor_renderer (backend);
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MetaScreenCastWindow *screen_cast_window;
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MetaCursorSprite *cursor_sprite;
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graphene_point_t relative_cursor_position;
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graphene_point_t cursor_position;
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CoglTexture *cursor_texture;
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CoglPipeline *pipeline;
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int width, height;
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float scale;
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int hotspot_x, hotspot_y;
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float x, y;
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cursor_sprite = meta_cursor_renderer_get_cursor (cursor_renderer);
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if (!cursor_sprite)
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return;
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cursor_texture = meta_cursor_sprite_get_cogl_texture (cursor_sprite);
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if (!cursor_texture)
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return;
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screen_cast_window = window_src->screen_cast_window;
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cursor_position = meta_cursor_renderer_get_position (cursor_renderer);
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if (!meta_screen_cast_window_transform_cursor_position (screen_cast_window,
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cursor_sprite,
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&cursor_position,
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&scale,
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&relative_cursor_position))
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return;
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meta_cursor_sprite_get_hotspot (cursor_sprite, &hotspot_x, &hotspot_y);
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x = (relative_cursor_position.x - hotspot_x) * scale;
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y = (relative_cursor_position.y - hotspot_y) * scale;
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width = cogl_texture_get_width (cursor_texture);
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height = cogl_texture_get_height (cursor_texture);
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pipeline = cogl_pipeline_new (cogl_context);
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cogl_pipeline_set_layer_texture (pipeline, 0, cursor_texture);
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cogl_pipeline_set_layer_filters (pipeline, 0,
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COGL_PIPELINE_FILTER_LINEAR,
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COGL_PIPELINE_FILTER_LINEAR);
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cogl_framebuffer_draw_rectangle (framebuffer,
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pipeline,
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x, y,
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x + width, y + height);
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cogl_object_unref (pipeline);
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}
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static gboolean
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capture_into (MetaScreenCastWindowStreamSrc *window_src,
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uint8_t *data)
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{
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MetaScreenCastStreamSrc *src = META_SCREEN_CAST_STREAM_SRC (window_src);
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MetaRectangle stream_rect;
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MetaScreenCastStream *stream;
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stream_rect.x = 0;
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stream_rect.y = 0;
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stream_rect.width = get_stream_width (window_src);
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stream_rect.height = get_stream_height (window_src);
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meta_screen_cast_window_capture_into (window_src->screen_cast_window,
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&stream_rect, data);
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stream = meta_screen_cast_stream_src_get_stream (src);
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switch (meta_screen_cast_stream_get_cursor_mode (stream))
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{
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case META_SCREEN_CAST_CURSOR_MODE_EMBEDDED:
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maybe_draw_cursor_sprite (window_src, data, &stream_rect);
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break;
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case META_SCREEN_CAST_CURSOR_MODE_METADATA:
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case META_SCREEN_CAST_CURSOR_MODE_HIDDEN:
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break;
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}
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return TRUE;
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}
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static void
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meta_screen_cast_window_stream_src_get_specs (MetaScreenCastStreamSrc *src,
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int *width,
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int *height,
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float *frame_rate)
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{
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MetaScreenCastWindowStreamSrc *window_src =
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META_SCREEN_CAST_WINDOW_STREAM_SRC (src);
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*width = get_stream_width (window_src);
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*height = get_stream_height (window_src);
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*frame_rate = 60.0f;
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}
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static gboolean
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meta_screen_cast_window_stream_src_get_videocrop (MetaScreenCastStreamSrc *src,
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MetaRectangle *crop_rect)
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{
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MetaScreenCastWindowStreamSrc *window_src =
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META_SCREEN_CAST_WINDOW_STREAM_SRC (src);
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MetaRectangle stream_rect;
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meta_screen_cast_window_get_buffer_bounds (window_src->screen_cast_window,
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crop_rect);
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stream_rect.x = 0;
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stream_rect.y = 0;
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stream_rect.width = get_stream_width (window_src);
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stream_rect.height = get_stream_height (window_src);
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meta_rectangle_intersect (crop_rect, &stream_rect, crop_rect);
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return TRUE;
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}
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static void
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meta_screen_cast_window_stream_src_stop (MetaScreenCastWindowStreamSrc *window_src)
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{
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MetaBackend *backend = get_backend (window_src);
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MetaCursorTracker *cursor_tracker = meta_backend_get_cursor_tracker (backend);
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if (!window_src->screen_cast_window)
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return;
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g_clear_signal_handler (&window_src->screen_cast_window_damaged_handler_id,
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window_src->screen_cast_window);
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g_clear_signal_handler (&window_src->screen_cast_window_destroyed_handler_id,
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window_src->screen_cast_window);
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g_clear_signal_handler (&window_src->cursor_moved_handler_id,
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cursor_tracker);
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g_clear_signal_handler (&window_src->cursor_changed_handler_id,
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cursor_tracker);
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}
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static void
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screen_cast_window_damaged (MetaWindowActor *actor,
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MetaScreenCastWindowStreamSrc *window_src)
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{
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MetaScreenCastStreamSrc *src = META_SCREEN_CAST_STREAM_SRC (window_src);
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MetaScreenCastRecordFlag flags;
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flags = META_SCREEN_CAST_RECORD_FLAG_CURSOR_ONLY;
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meta_screen_cast_stream_src_maybe_record_frame (src, flags);
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}
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static void
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screen_cast_window_destroyed (MetaWindowActor *actor,
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MetaScreenCastWindowStreamSrc *window_src)
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{
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meta_screen_cast_window_stream_src_stop (window_src);
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window_src->screen_cast_window = NULL;
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}
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static gboolean
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is_cursor_in_stream (MetaScreenCastWindowStreamSrc *window_src)
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{
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MetaBackend *backend = get_backend (window_src);
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MetaCursorRenderer *cursor_renderer =
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meta_backend_get_cursor_renderer (backend);
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MetaCursorSprite *cursor_sprite;
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graphene_point_t cursor_position;
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MetaScreenCastWindow *screen_cast_window;
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cursor_sprite = meta_cursor_renderer_get_cursor (cursor_renderer);
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cursor_position = meta_cursor_renderer_get_position (cursor_renderer);
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screen_cast_window = window_src->screen_cast_window;
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return meta_screen_cast_window_transform_cursor_position (screen_cast_window,
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cursor_sprite,
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&cursor_position,
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NULL,
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NULL);
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}
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static void
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sync_cursor_state (MetaScreenCastWindowStreamSrc *window_src)
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{
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MetaScreenCastStreamSrc *src = META_SCREEN_CAST_STREAM_SRC (window_src);
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MetaScreenCastRecordFlag flags;
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if (!is_cursor_in_stream (window_src))
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return;
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if (meta_screen_cast_window_has_damage (window_src->screen_cast_window))
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return;
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flags = META_SCREEN_CAST_RECORD_FLAG_CURSOR_ONLY;
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meta_screen_cast_stream_src_maybe_record_frame (src, flags);
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}
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static void
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cursor_moved (MetaCursorTracker *cursor_tracker,
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float x,
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float y,
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MetaScreenCastWindowStreamSrc *window_src)
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{
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sync_cursor_state (window_src);
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}
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static void
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cursor_changed (MetaCursorTracker *cursor_tracker,
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MetaScreenCastWindowStreamSrc *window_src)
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{
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window_src->cursor_bitmap_invalid = TRUE;
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sync_cursor_state (window_src);
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}
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static void
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meta_screen_cast_window_stream_src_enable (MetaScreenCastStreamSrc *src)
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{
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MetaScreenCastWindowStreamSrc *window_src =
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META_SCREEN_CAST_WINDOW_STREAM_SRC (src);
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MetaBackend *backend = get_backend (window_src);
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MetaCursorTracker *cursor_tracker = meta_backend_get_cursor_tracker (backend);
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MetaWindowActor *window_actor;
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MetaScreenCastStream *stream;
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MetaScreenCastRecordFlag flags;
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window_actor = meta_window_actor_from_window (get_window (window_src));
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if (!window_actor)
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return;
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window_src->screen_cast_window = META_SCREEN_CAST_WINDOW (window_actor);
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window_src->screen_cast_window_damaged_handler_id =
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g_signal_connect (window_src->screen_cast_window,
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"damaged",
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G_CALLBACK (screen_cast_window_damaged),
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window_src);
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window_src->screen_cast_window_destroyed_handler_id =
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g_signal_connect (window_src->screen_cast_window,
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"destroy",
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G_CALLBACK (screen_cast_window_destroyed),
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window_src);
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stream = meta_screen_cast_stream_src_get_stream (src);
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switch (meta_screen_cast_stream_get_cursor_mode (stream))
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{
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case META_SCREEN_CAST_CURSOR_MODE_METADATA:
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case META_SCREEN_CAST_CURSOR_MODE_EMBEDDED:
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window_src->cursor_moved_handler_id =
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g_signal_connect_after (cursor_tracker, "cursor-moved",
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G_CALLBACK (cursor_moved),
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window_src);
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window_src->cursor_changed_handler_id =
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g_signal_connect_after (cursor_tracker, "cursor-changed",
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G_CALLBACK (cursor_changed),
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window_src);
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break;
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case META_SCREEN_CAST_CURSOR_MODE_HIDDEN:
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break;
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}
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flags = META_SCREEN_CAST_RECORD_FLAG_NONE;
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meta_screen_cast_stream_src_maybe_record_frame (src, flags);
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}
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static void
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meta_screen_cast_window_stream_src_disable (MetaScreenCastStreamSrc *src)
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{
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MetaScreenCastWindowStreamSrc *window_src =
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META_SCREEN_CAST_WINDOW_STREAM_SRC (src);
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meta_screen_cast_window_stream_src_stop (window_src);
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}
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static gboolean
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meta_screen_cast_window_stream_src_record_to_buffer (MetaScreenCastStreamSrc *src,
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uint8_t *data,
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GError **error)
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{
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MetaScreenCastWindowStreamSrc *window_src =
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META_SCREEN_CAST_WINDOW_STREAM_SRC (src);
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capture_into (window_src, data);
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return TRUE;
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}
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static gboolean
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meta_screen_cast_window_stream_src_record_to_framebuffer (MetaScreenCastStreamSrc *src,
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CoglFramebuffer *framebuffer,
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GError **error)
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{
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MetaScreenCastWindowStreamSrc *window_src =
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META_SCREEN_CAST_WINDOW_STREAM_SRC (src);
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MetaScreenCastStream *stream;
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MetaRectangle stream_rect;
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stream_rect.x = 0;
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stream_rect.y = 0;
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stream_rect.width = get_stream_width (window_src);
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stream_rect.height = get_stream_height (window_src);
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if (!meta_screen_cast_window_blit_to_framebuffer (window_src->screen_cast_window,
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&stream_rect,
|
|
framebuffer))
|
|
{
|
|
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
|
|
"Failed to blit window content to framebuffer");
|
|
return FALSE;
|
|
}
|
|
|
|
stream = meta_screen_cast_stream_src_get_stream (src);
|
|
switch (meta_screen_cast_stream_get_cursor_mode (stream))
|
|
{
|
|
case META_SCREEN_CAST_CURSOR_MODE_EMBEDDED:
|
|
maybe_blit_cursor_sprite (window_src, framebuffer, &stream_rect);
|
|
break;
|
|
case META_SCREEN_CAST_CURSOR_MODE_METADATA:
|
|
case META_SCREEN_CAST_CURSOR_MODE_HIDDEN:
|
|
break;
|
|
}
|
|
|
|
cogl_framebuffer_finish (framebuffer);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
meta_screen_cast_window_stream_record_follow_up (MetaScreenCastStreamSrc *src)
|
|
{
|
|
MetaScreenCastRecordFlag flags;
|
|
|
|
flags = META_SCREEN_CAST_RECORD_FLAG_NONE;
|
|
meta_screen_cast_stream_src_maybe_record_frame (src, flags);
|
|
}
|
|
|
|
static void
|
|
meta_screen_cast_window_stream_src_set_cursor_metadata (MetaScreenCastStreamSrc *src,
|
|
struct spa_meta_cursor *spa_meta_cursor)
|
|
{
|
|
MetaScreenCastWindowStreamSrc *window_src =
|
|
META_SCREEN_CAST_WINDOW_STREAM_SRC (src);
|
|
MetaBackend *backend = get_backend (window_src);
|
|
MetaCursorRenderer *cursor_renderer =
|
|
meta_backend_get_cursor_renderer (backend);
|
|
MetaScreenCastWindow *screen_cast_window = window_src->screen_cast_window;
|
|
MetaCursorSprite *cursor_sprite;
|
|
graphene_point_t cursor_position;
|
|
float scale;
|
|
graphene_point_t relative_cursor_position;
|
|
int x, y;
|
|
|
|
cursor_sprite = meta_cursor_renderer_get_cursor (cursor_renderer);
|
|
cursor_position = meta_cursor_renderer_get_position (cursor_renderer);
|
|
|
|
if (!meta_screen_cast_window_transform_cursor_position (screen_cast_window,
|
|
cursor_sprite,
|
|
&cursor_position,
|
|
&scale,
|
|
&relative_cursor_position))
|
|
{
|
|
meta_screen_cast_stream_src_unset_cursor_metadata (src,
|
|
spa_meta_cursor);
|
|
return;
|
|
}
|
|
|
|
x = (int) roundf (relative_cursor_position.x);
|
|
y = (int) roundf (relative_cursor_position.y);
|
|
|
|
if (window_src->cursor_bitmap_invalid)
|
|
{
|
|
if (cursor_sprite)
|
|
{
|
|
meta_screen_cast_stream_src_set_cursor_sprite_metadata (src,
|
|
spa_meta_cursor,
|
|
cursor_sprite,
|
|
x, y,
|
|
scale);
|
|
}
|
|
else
|
|
{
|
|
meta_screen_cast_stream_src_set_empty_cursor_sprite_metadata (src,
|
|
spa_meta_cursor,
|
|
x, y);
|
|
}
|
|
window_src->cursor_bitmap_invalid = FALSE;
|
|
}
|
|
else
|
|
{
|
|
meta_screen_cast_stream_src_set_cursor_position_metadata (src,
|
|
spa_meta_cursor,
|
|
x, y);
|
|
}
|
|
}
|
|
|
|
MetaScreenCastWindowStreamSrc *
|
|
meta_screen_cast_window_stream_src_new (MetaScreenCastWindowStream *window_stream,
|
|
GError **error)
|
|
{
|
|
return g_initable_new (META_TYPE_SCREEN_CAST_WINDOW_STREAM_SRC, NULL, error,
|
|
"stream", window_stream,
|
|
NULL);
|
|
}
|
|
|
|
static void
|
|
meta_screen_cast_window_stream_src_init (MetaScreenCastWindowStreamSrc *window_src)
|
|
{
|
|
window_src->cursor_bitmap_invalid = TRUE;
|
|
}
|
|
|
|
static void
|
|
meta_screen_cast_window_stream_src_class_init (MetaScreenCastWindowStreamSrcClass *klass)
|
|
{
|
|
MetaScreenCastStreamSrcClass *src_class =
|
|
META_SCREEN_CAST_STREAM_SRC_CLASS (klass);
|
|
|
|
src_class->get_specs = meta_screen_cast_window_stream_src_get_specs;
|
|
src_class->enable = meta_screen_cast_window_stream_src_enable;
|
|
src_class->disable = meta_screen_cast_window_stream_src_disable;
|
|
src_class->record_to_buffer =
|
|
meta_screen_cast_window_stream_src_record_to_buffer;
|
|
src_class->record_to_framebuffer =
|
|
meta_screen_cast_window_stream_src_record_to_framebuffer;
|
|
src_class->record_follow_up =
|
|
meta_screen_cast_window_stream_record_follow_up;
|
|
src_class->get_videocrop = meta_screen_cast_window_stream_src_get_videocrop;
|
|
src_class->set_cursor_metadata = meta_screen_cast_window_stream_src_set_cursor_metadata;
|
|
}
|