mutter/src/backends/meta-screen-cast-monitor-stream-src.c
Jonas Ådahl 424016d66c stage: Pass paint context in phase callbacks
If there is a paint context available (i.e. for the phases that are
during the actual stage paint), pass it along the callbacks, so that
the callback implementations can change their operation depending on the
paint context state.

This also means we can get the current view from the paint context,
instead of the temporarily used field in the instance struct.

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1207
2020-04-23 14:45:53 +00:00

571 lines
19 KiB
C

/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (C) 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-monitor-stream-src.h"
#include <spa/buffer/meta.h>
#include "backends/meta-backend-private.h"
#include "backends/meta-cursor-tracker-private.h"
#include "backends/meta-logical-monitor.h"
#include "backends/meta-monitor.h"
#include "backends/meta-screen-cast-monitor-stream.h"
#include "backends/meta-screen-cast-session.h"
#include "backends/meta-stage-private.h"
#include "clutter/clutter.h"
#include "clutter/clutter-mutter.h"
#include "core/boxes-private.h"
struct _MetaScreenCastMonitorStreamSrc
{
MetaScreenCastStreamSrc parent;
gboolean cursor_bitmap_invalid;
gboolean hw_cursor_inhibited;
GList *watches;
gulong cursor_moved_handler_id;
gulong cursor_changed_handler_id;
};
static void
hw_cursor_inhibitor_iface_init (MetaHwCursorInhibitorInterface *iface);
G_DEFINE_TYPE_WITH_CODE (MetaScreenCastMonitorStreamSrc,
meta_screen_cast_monitor_stream_src,
META_TYPE_SCREEN_CAST_STREAM_SRC,
G_IMPLEMENT_INTERFACE (META_TYPE_HW_CURSOR_INHIBITOR,
hw_cursor_inhibitor_iface_init))
static ClutterStage *
get_stage (MetaScreenCastMonitorStreamSrc *monitor_src)
{
MetaScreenCastStreamSrc *src;
MetaScreenCastStream *stream;
MetaScreenCastMonitorStream *monitor_stream;
src = META_SCREEN_CAST_STREAM_SRC (monitor_src);
stream = meta_screen_cast_stream_src_get_stream (src);
monitor_stream = META_SCREEN_CAST_MONITOR_STREAM (stream);
return meta_screen_cast_monitor_stream_get_stage (monitor_stream);
}
static MetaMonitor *
get_monitor (MetaScreenCastMonitorStreamSrc *monitor_src)
{
MetaScreenCastStreamSrc *src;
MetaScreenCastStream *stream;
MetaScreenCastMonitorStream *monitor_stream;
src = META_SCREEN_CAST_STREAM_SRC (monitor_src);
stream = meta_screen_cast_stream_src_get_stream (src);
monitor_stream = META_SCREEN_CAST_MONITOR_STREAM (stream);
return meta_screen_cast_monitor_stream_get_monitor (monitor_stream);
}
static void
meta_screen_cast_monitor_stream_src_get_specs (MetaScreenCastStreamSrc *src,
int *width,
int *height,
float *frame_rate)
{
MetaScreenCastMonitorStreamSrc *monitor_src =
META_SCREEN_CAST_MONITOR_STREAM_SRC (src);
MetaMonitor *monitor;
MetaLogicalMonitor *logical_monitor;
float scale;
MetaMonitorMode *mode;
monitor = get_monitor (monitor_src);
logical_monitor = meta_monitor_get_logical_monitor (monitor);
mode = meta_monitor_get_current_mode (monitor);
if (meta_is_stage_views_scaled ())
scale = logical_monitor->scale;
else
scale = 1.0;
*width = (int) roundf (logical_monitor->rect.width * scale);
*height = (int) roundf (logical_monitor->rect.height * scale);
*frame_rate = meta_monitor_mode_get_refresh_rate (mode);
}
static void
stage_painted (MetaStage *stage,
ClutterStageView *view,
ClutterPaintContext *paint_context,
gpointer user_data)
{
MetaScreenCastStreamSrc *src = META_SCREEN_CAST_STREAM_SRC (user_data);
meta_screen_cast_stream_src_maybe_record_frame (src);
}
static MetaBackend *
get_backend (MetaScreenCastMonitorStreamSrc *monitor_src)
{
MetaScreenCastStreamSrc *src = META_SCREEN_CAST_STREAM_SRC (monitor_src);
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);
return meta_screen_cast_get_backend (screen_cast);
}
static gboolean
is_cursor_in_stream (MetaScreenCastMonitorStreamSrc *monitor_src)
{
MetaBackend *backend = get_backend (monitor_src);
MetaCursorRenderer *cursor_renderer =
meta_backend_get_cursor_renderer (backend);
MetaMonitor *monitor;
MetaLogicalMonitor *logical_monitor;
MetaRectangle logical_monitor_layout;
graphene_rect_t logical_monitor_rect;
MetaCursorSprite *cursor_sprite;
monitor = get_monitor (monitor_src);
logical_monitor = meta_monitor_get_logical_monitor (monitor);
logical_monitor_layout = meta_logical_monitor_get_layout (logical_monitor);
logical_monitor_rect =
meta_rectangle_to_graphene_rect (&logical_monitor_layout);
cursor_sprite = meta_cursor_renderer_get_cursor (cursor_renderer);
if (cursor_sprite)
{
graphene_rect_t cursor_rect;
cursor_rect = meta_cursor_renderer_calculate_rect (cursor_renderer,
cursor_sprite);
return graphene_rect_intersection (&cursor_rect,
&logical_monitor_rect,
NULL);
}
else
{
graphene_point_t cursor_position;
cursor_position = meta_cursor_renderer_get_position (cursor_renderer);
return graphene_rect_contains_point (&logical_monitor_rect,
&cursor_position);
}
}
static void
sync_cursor_state (MetaScreenCastMonitorStreamSrc *monitor_src)
{
MetaScreenCastStreamSrc *src = META_SCREEN_CAST_STREAM_SRC (monitor_src);
ClutterStage *stage = get_stage (monitor_src);
if (!is_cursor_in_stream (monitor_src))
return;
if (clutter_stage_is_redraw_queued (stage))
return;
meta_screen_cast_stream_src_maybe_record_frame (src);
}
static void
cursor_moved (MetaCursorTracker *cursor_tracker,
float x,
float y,
MetaScreenCastMonitorStreamSrc *monitor_src)
{
sync_cursor_state (monitor_src);
}
static void
cursor_changed (MetaCursorTracker *cursor_tracker,
MetaScreenCastMonitorStreamSrc *monitor_src)
{
monitor_src->cursor_bitmap_invalid = TRUE;
sync_cursor_state (monitor_src);
}
static MetaCursorRenderer *
get_cursor_renderer (MetaScreenCastMonitorStreamSrc *monitor_src)
{
MetaScreenCastStreamSrc *src = META_SCREEN_CAST_STREAM_SRC (monitor_src);
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);
return meta_backend_get_cursor_renderer (backend);
}
static void
inhibit_hw_cursor (MetaScreenCastMonitorStreamSrc *monitor_src)
{
MetaCursorRenderer *cursor_renderer;
MetaHwCursorInhibitor *inhibitor;
g_return_if_fail (!monitor_src->hw_cursor_inhibited);
cursor_renderer = get_cursor_renderer (monitor_src);
inhibitor = META_HW_CURSOR_INHIBITOR (monitor_src);
meta_cursor_renderer_add_hw_cursor_inhibitor (cursor_renderer, inhibitor);
monitor_src->hw_cursor_inhibited = TRUE;
}
static void
uninhibit_hw_cursor (MetaScreenCastMonitorStreamSrc *monitor_src)
{
MetaCursorRenderer *cursor_renderer;
MetaHwCursorInhibitor *inhibitor;
g_return_if_fail (monitor_src->hw_cursor_inhibited);
cursor_renderer = get_cursor_renderer (monitor_src);
inhibitor = META_HW_CURSOR_INHIBITOR (monitor_src);
meta_cursor_renderer_remove_hw_cursor_inhibitor (cursor_renderer, inhibitor);
monitor_src->hw_cursor_inhibited = FALSE;
}
static void
add_view_painted_watches (MetaScreenCastMonitorStreamSrc *monitor_src,
MetaStageWatchPhase watch_phase)
{
MetaBackend *backend = get_backend (monitor_src);
MetaRenderer *renderer = meta_backend_get_renderer (backend);
ClutterStage *stage;
MetaStage *meta_stage;
MetaMonitor *monitor;
MetaLogicalMonitor *logical_monitor;
MetaRectangle logical_monitor_layout;
GList *l;
stage = get_stage (monitor_src);
meta_stage = META_STAGE (stage);
monitor = get_monitor (monitor_src);
logical_monitor = meta_monitor_get_logical_monitor (monitor);
logical_monitor_layout = meta_logical_monitor_get_layout (logical_monitor);
for (l = meta_renderer_get_views (renderer); l; l = l->next)
{
MetaRendererView *view = l->data;
MetaRectangle view_layout;
clutter_stage_view_get_layout (CLUTTER_STAGE_VIEW (view), &view_layout);
if (meta_rectangle_overlap (&logical_monitor_layout, &view_layout))
{
MetaStageWatch *watch;
watch = meta_stage_watch_view (meta_stage,
CLUTTER_STAGE_VIEW (view),
watch_phase,
stage_painted,
monitor_src);
monitor_src->watches = g_list_prepend (monitor_src->watches, watch);
}
}
}
static void
meta_screen_cast_monitor_stream_src_enable (MetaScreenCastStreamSrc *src)
{
MetaScreenCastMonitorStreamSrc *monitor_src =
META_SCREEN_CAST_MONITOR_STREAM_SRC (src);
MetaBackend *backend = get_backend (monitor_src);
MetaCursorTracker *cursor_tracker = meta_backend_get_cursor_tracker (backend);
ClutterStage *stage;
MetaScreenCastStream *stream;
stream = meta_screen_cast_stream_src_get_stream (src);
stage = get_stage (monitor_src);
switch (meta_screen_cast_stream_get_cursor_mode (stream))
{
case META_SCREEN_CAST_CURSOR_MODE_METADATA:
monitor_src->cursor_moved_handler_id =
g_signal_connect_after (cursor_tracker, "cursor-moved",
G_CALLBACK (cursor_moved),
monitor_src);
monitor_src->cursor_changed_handler_id =
g_signal_connect_after (cursor_tracker, "cursor-changed",
G_CALLBACK (cursor_changed),
monitor_src);
G_GNUC_FALLTHROUGH;
case META_SCREEN_CAST_CURSOR_MODE_HIDDEN:
add_view_painted_watches (monitor_src,
META_STAGE_WATCH_AFTER_ACTOR_PAINT);
break;
case META_SCREEN_CAST_CURSOR_MODE_EMBEDDED:
inhibit_hw_cursor (monitor_src);
add_view_painted_watches (monitor_src,
META_STAGE_WATCH_AFTER_PAINT);
break;
}
clutter_actor_queue_redraw (CLUTTER_ACTOR (stage));
}
static void
meta_screen_cast_monitor_stream_src_disable (MetaScreenCastStreamSrc *src)
{
MetaScreenCastMonitorStreamSrc *monitor_src =
META_SCREEN_CAST_MONITOR_STREAM_SRC (src);
MetaBackend *backend = get_backend (monitor_src);
MetaCursorTracker *cursor_tracker = meta_backend_get_cursor_tracker (backend);
ClutterStage *stage;
MetaStage *meta_stage;
GList *l;
stage = get_stage (monitor_src);
meta_stage = META_STAGE (stage);
for (l = monitor_src->watches; l; l = l->next)
{
MetaStageWatch *watch = l->data;
meta_stage_remove_watch (meta_stage, watch);
}
g_clear_pointer (&monitor_src->watches, g_list_free);
if (monitor_src->hw_cursor_inhibited)
uninhibit_hw_cursor (monitor_src);
g_clear_signal_handler (&monitor_src->cursor_moved_handler_id,
cursor_tracker);
g_clear_signal_handler (&monitor_src->cursor_changed_handler_id,
cursor_tracker);
}
static gboolean
meta_screen_cast_monitor_stream_src_record_frame (MetaScreenCastStreamSrc *src,
uint8_t *data)
{
MetaScreenCastMonitorStreamSrc *monitor_src =
META_SCREEN_CAST_MONITOR_STREAM_SRC (src);
ClutterStage *stage;
MetaMonitor *monitor;
MetaLogicalMonitor *logical_monitor;
stage = get_stage (monitor_src);
if (!clutter_stage_is_redraw_queued (stage))
return FALSE;
monitor = get_monitor (monitor_src);
logical_monitor = meta_monitor_get_logical_monitor (monitor);
clutter_stage_capture_into (stage, FALSE, &logical_monitor->rect, data);
return TRUE;
}
static gboolean
meta_screen_cast_monitor_stream_src_blit_to_framebuffer (MetaScreenCastStreamSrc *src,
CoglFramebuffer *framebuffer)
{
MetaScreenCastMonitorStreamSrc *monitor_src =
META_SCREEN_CAST_MONITOR_STREAM_SRC (src);
MetaBackend *backend = get_backend (monitor_src);
MetaRenderer *renderer = meta_backend_get_renderer (backend);
MetaMonitor *monitor;
MetaLogicalMonitor *logical_monitor;
MetaRectangle logical_monitor_layout;
GList *l;
float view_scale;
monitor = get_monitor (monitor_src);
logical_monitor = meta_monitor_get_logical_monitor (monitor);
logical_monitor_layout = meta_logical_monitor_get_layout (logical_monitor);
if (meta_is_stage_views_scaled ())
view_scale = meta_logical_monitor_get_scale (logical_monitor);
else
view_scale = 1.0;
for (l = meta_renderer_get_views (renderer); l; l = l->next)
{
ClutterStageView *view = CLUTTER_STAGE_VIEW (l->data);
g_autoptr (GError) error = NULL;
CoglFramebuffer *view_framebuffer;
MetaRectangle view_layout;
int x, y;
clutter_stage_view_get_layout (view, &view_layout);
if (!meta_rectangle_overlap (&logical_monitor_layout, &view_layout))
continue;
view_framebuffer = clutter_stage_view_get_framebuffer (view);
x = (int) roundf ((view_layout.x - logical_monitor_layout.x) * view_scale);
y = (int) roundf ((view_layout.y - logical_monitor_layout.y) * view_scale);
if (!cogl_blit_framebuffer (view_framebuffer,
framebuffer,
0, 0,
x, y,
cogl_framebuffer_get_width (view_framebuffer),
cogl_framebuffer_get_height (view_framebuffer),
&error))
{
g_warning ("Error blitting view into DMABuf framebuffer: %s",
error->message);
return FALSE;
}
}
cogl_framebuffer_finish (framebuffer);
return TRUE;
}
static void
meta_screen_cast_monitor_stream_src_set_cursor_metadata (MetaScreenCastStreamSrc *src,
struct spa_meta_cursor *spa_meta_cursor)
{
MetaScreenCastMonitorStreamSrc *monitor_src =
META_SCREEN_CAST_MONITOR_STREAM_SRC (src);
MetaBackend *backend = get_backend (monitor_src);
MetaCursorRenderer *cursor_renderer =
meta_backend_get_cursor_renderer (backend);
MetaCursorSprite *cursor_sprite;
MetaMonitor *monitor;
MetaLogicalMonitor *logical_monitor;
MetaRectangle logical_monitor_layout;
graphene_rect_t logical_monitor_rect;
float view_scale;
graphene_point_t cursor_position;
int x, y;
cursor_sprite = meta_cursor_renderer_get_cursor (cursor_renderer);
if (!is_cursor_in_stream (monitor_src))
{
meta_screen_cast_stream_src_unset_cursor_metadata (src,
spa_meta_cursor);
return;
}
monitor = get_monitor (monitor_src);
logical_monitor = meta_monitor_get_logical_monitor (monitor);
logical_monitor_layout = meta_logical_monitor_get_layout (logical_monitor);
logical_monitor_rect =
meta_rectangle_to_graphene_rect (&logical_monitor_layout);
if (meta_is_stage_views_scaled ())
view_scale = meta_logical_monitor_get_scale (logical_monitor);
else
view_scale = 1.0;
cursor_position = meta_cursor_renderer_get_position (cursor_renderer);
cursor_position.x -= logical_monitor_rect.origin.x;
cursor_position.y -= logical_monitor_rect.origin.y;
cursor_position.x *= view_scale;
cursor_position.y *= view_scale;
x = (int) roundf (cursor_position.x);
y = (int) roundf (cursor_position.y);
if (monitor_src->cursor_bitmap_invalid)
{
if (cursor_sprite)
{
float cursor_scale;
float scale;
cursor_scale = meta_cursor_sprite_get_texture_scale (cursor_sprite);
scale = view_scale * cursor_scale;
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);
}
monitor_src->cursor_bitmap_invalid = FALSE;
}
else
{
meta_screen_cast_stream_src_set_cursor_position_metadata (src,
spa_meta_cursor,
x, y);
}
}
static gboolean
meta_screen_cast_monitor_stream_src_is_cursor_sprite_inhibited (MetaHwCursorInhibitor *inhibitor,
MetaCursorSprite *cursor_sprite)
{
MetaScreenCastMonitorStreamSrc *monitor_src =
META_SCREEN_CAST_MONITOR_STREAM_SRC (inhibitor);
return is_cursor_in_stream (monitor_src);
}
static void
hw_cursor_inhibitor_iface_init (MetaHwCursorInhibitorInterface *iface)
{
iface->is_cursor_sprite_inhibited =
meta_screen_cast_monitor_stream_src_is_cursor_sprite_inhibited;
}
MetaScreenCastMonitorStreamSrc *
meta_screen_cast_monitor_stream_src_new (MetaScreenCastMonitorStream *monitor_stream,
GError **error)
{
return g_initable_new (META_TYPE_SCREEN_CAST_MONITOR_STREAM_SRC, NULL, error,
"stream", monitor_stream,
NULL);
}
static void
meta_screen_cast_monitor_stream_src_init (MetaScreenCastMonitorStreamSrc *monitor_src)
{
monitor_src->cursor_bitmap_invalid = TRUE;
}
static void
meta_screen_cast_monitor_stream_src_class_init (MetaScreenCastMonitorStreamSrcClass *klass)
{
MetaScreenCastStreamSrcClass *src_class =
META_SCREEN_CAST_STREAM_SRC_CLASS (klass);
src_class->get_specs = meta_screen_cast_monitor_stream_src_get_specs;
src_class->enable = meta_screen_cast_monitor_stream_src_enable;
src_class->disable = meta_screen_cast_monitor_stream_src_disable;
src_class->record_frame = meta_screen_cast_monitor_stream_src_record_frame;
src_class->blit_to_framebuffer =
meta_screen_cast_monitor_stream_src_blit_to_framebuffer;
src_class->set_cursor_metadata =
meta_screen_cast_monitor_stream_src_set_cursor_metadata;
}