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screen-cast/monitor-src: Use clutter_stage_paint_to_buffer

Browse Source 
It works correctly with scanouts, in contrast to
clutter_stage_capture_into. Inspired by
meta_screen_cast_area_stream_src_record_to_buffer.

maybe_paint_cursor_sprite is now unused and thus removed.

v2:
* clutter_stage_paint_to_buffer requires switching to recording from an
  idle callback as well. (Jonas Ådahl)
v3:
* Set human readable name for idle source. (Ivan Molodetskikh)

Closes: https://gitlab.gnome.org/GNOME/mutter/-/issues/1940
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1914>
This commit is contained in:
Michel Dänzer 2021-06-25 18:33:28 +02:00 committed by Marge Bot
parent 10d1de2bdf
commit 6c818cd8d5
1 changed files with 57 additions and 82 deletions
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139
src/backends/meta-screen-cast-monitor-stream-src.c
View File

@ -48,6 +48,8 @@ struct _MetaScreenCastMonitorStreamSrc
gulong position_invalidated_handler_id;
gulong cursor_changed_handler_id;
guint maybe_record_idle_id;
};
static void
@ -116,17 +118,39 @@ meta_screen_cast_monitor_stream_src_get_specs (MetaScreenCastStreamSrc *src,
return TRUE;
}
static gboolean
maybe_record_frame_on_idle (gpointer user_data)
{
MetaScreenCastMonitorStreamSrc *monitor_src =
META_SCREEN_CAST_MONITOR_STREAM_SRC (user_data);
MetaScreenCastStreamSrc *src = META_SCREEN_CAST_STREAM_SRC (monitor_src);
MetaScreenCastRecordFlag flags;
monitor_src->maybe_record_idle_id = 0;
flags = META_SCREEN_CAST_RECORD_FLAG_NONE;
meta_screen_cast_stream_src_maybe_record_frame (src, flags);
return G_SOURCE_REMOVE;
}
static void
stage_painted (MetaStage *stage,
ClutterStageView *view,
ClutterPaintContext *paint_context,
gpointer user_data)
{
MetaScreenCastStreamSrc *src = META_SCREEN_CAST_STREAM_SRC (user_data);
MetaScreenCastRecordFlag flags;
MetaScreenCastMonitorStreamSrc *monitor_src =
META_SCREEN_CAST_MONITOR_STREAM_SRC (user_data);
MetaScreenCastStreamSrc *src = META_SCREEN_CAST_STREAM_SRC (monitor_src);
flags = META_SCREEN_CAST_RECORD_FLAG_NONE;
meta_screen_cast_stream_src_maybe_record_frame (src, flags);
if (monitor_src->maybe_record_idle_id)
return;
monitor_src->maybe_record_idle_id = g_idle_add (maybe_record_frame_on_idle,
src);
g_source_set_name_by_id (monitor_src->maybe_record_idle_id,
"[mutter] maybe_record_frame_on_idle [monitor-src]");
}
static void
@ -135,17 +159,20 @@ before_stage_painted (MetaStage *stage,
ClutterPaintContext *paint_context,
gpointer user_data)
{
MetaScreenCastStreamSrc *src = META_SCREEN_CAST_STREAM_SRC (user_data);
CoglScanout *scanout;
MetaScreenCastMonitorStreamSrc *monitor_src =
META_SCREEN_CAST_MONITOR_STREAM_SRC (user_data);
MetaScreenCastStreamSrc *src = META_SCREEN_CAST_STREAM_SRC (monitor_src);
scanout = clutter_stage_view_peek_scanout (view);
if (scanout)
{
MetaScreenCastRecordFlag flags;
if (monitor_src->maybe_record_idle_id)
return;
flags = META_SCREEN_CAST_RECORD_FLAG_NONE;
meta_screen_cast_stream_src_maybe_record_frame (src, flags);
}
if (!clutter_stage_view_peek_scanout (view))
return;
monitor_src->maybe_record_idle_id = g_idle_add (maybe_record_frame_on_idle,
src);
g_source_set_name_by_id (monitor_src->maybe_record_idle_id,
"[mutter] maybe_record_frame_on_idle [monitor-src]");
}
static MetaBackend *
@ -440,6 +467,8 @@ meta_screen_cast_monitor_stream_src_disable (MetaScreenCastStreamSrc *src)
g_clear_signal_handler (&monitor_src->cursor_changed_handler_id,
cursor_tracker);
g_clear_handle_id (&monitor_src->maybe_record_idle_id, g_source_remove);
switch (meta_screen_cast_stream_get_cursor_mode (stream))
{
case META_SCREEN_CAST_CURSOR_MODE_METADATA:
@ -451,70 +480,6 @@ meta_screen_cast_monitor_stream_src_disable (MetaScreenCastStreamSrc *src)
}
}
static void
maybe_paint_cursor_sprite (MetaScreenCastMonitorStreamSrc *monitor_src,
int width,
int height,
int stride,
uint8_t *data)
{
MetaBackend *backend = get_backend (monitor_src);
MetaCursorRenderer *cursor_renderer =
meta_backend_get_cursor_renderer (backend);
MetaCursorSprite *cursor_sprite;
CoglTexture *sprite_texture;
int sprite_width, sprite_height, sprite_stride;
float sprite_scale;
uint8_t *sprite_data;
cairo_surface_t *sprite_surface;
graphene_rect_t sprite_rect;
cairo_surface_t *surface;
cairo_t *cr;
if (!is_cursor_in_stream (monitor_src))
return;
cursor_sprite = meta_cursor_renderer_get_cursor (cursor_renderer);
if (!cursor_sprite)
return;
if (meta_cursor_renderer_is_overlay_visible (cursor_renderer))
return;
sprite_rect = meta_cursor_renderer_calculate_rect (cursor_renderer,
cursor_sprite);
sprite_texture = meta_cursor_sprite_get_cogl_texture (cursor_sprite);
sprite_width = cogl_texture_get_width (sprite_texture);
sprite_height = cogl_texture_get_height (sprite_texture);
sprite_stride = sprite_width * 4;
sprite_scale = meta_cursor_sprite_get_texture_scale (cursor_sprite);
sprite_data = g_new0 (uint8_t, sprite_stride * sprite_height);
cogl_texture_get_data (sprite_texture,
CLUTTER_CAIRO_FORMAT_ARGB32,
sprite_stride,
sprite_data);
sprite_surface = cairo_image_surface_create_for_data (sprite_data,
CAIRO_FORMAT_ARGB32,
sprite_width,
sprite_height,
sprite_stride);
cairo_surface_set_device_scale (sprite_surface, sprite_scale, sprite_scale);
surface = cairo_image_surface_create_for_data (data,
CAIRO_FORMAT_ARGB32,
width, height, stride);
cr = cairo_create (surface);
cairo_set_source_surface (cr, sprite_surface,
sprite_rect.origin.x,
sprite_rect.origin.y);
cairo_paint (cr);
cairo_destroy (cr);
cairo_surface_destroy (sprite_surface);
cairo_surface_destroy (surface);
g_free (sprite_data);
}
static gboolean
meta_screen_cast_monitor_stream_src_record_to_buffer (MetaScreenCastStreamSrc *src,
int width,
@ -530,6 +495,7 @@ meta_screen_cast_monitor_stream_src_record_to_buffer (MetaScreenCastStreamSrc *
MetaMonitor *monitor;
MetaLogicalMonitor *logical_monitor;
float scale;
ClutterPaintFlag paint_flags = CLUTTER_PAINT_FLAG_CLEAR;
monitor = get_monitor (monitor_src);
logical_monitor = meta_monitor_get_logical_monitor (monitor);
@ -540,18 +506,25 @@ meta_screen_cast_monitor_stream_src_record_to_buffer (MetaScreenCastStreamSrc *
else
scale = 1.0;
clutter_stage_capture_into (stage, &logical_monitor->rect, scale, data, stride);
switch (meta_screen_cast_stream_get_cursor_mode (stream))
{
case META_SCREEN_CAST_CURSOR_MODE_EMBEDDED:
maybe_paint_cursor_sprite (monitor_src, width, height, stride, data);
break;
case META_SCREEN_CAST_CURSOR_MODE_METADATA:
case META_SCREEN_CAST_CURSOR_MODE_HIDDEN:
paint_flags |= CLUTTER_PAINT_FLAG_NO_CURSORS;
break;
case META_SCREEN_CAST_CURSOR_MODE_EMBEDDED:
paint_flags |= CLUTTER_PAINT_FLAG_FORCE_CURSORS;
break;
}
if (!clutter_stage_paint_to_buffer (stage, &logical_monitor->rect, scale,
data,
stride,
CLUTTER_CAIRO_FORMAT_ARGB32,
paint_flags,
error))
return FALSE;
return TRUE;
}
@ -636,6 +609,8 @@ meta_screen_cast_monitor_stream_record_follow_up (MetaScreenCastStreamSrc *src)
MetaRectangle logical_monitor_layout;
GList *l;
g_clear_handle_id (&monitor_src->maybe_record_idle_id, g_source_remove);
monitor = get_monitor (monitor_src);
logical_monitor = meta_monitor_get_logical_monitor (monitor);
logical_monitor_layout = meta_logical_monitor_get_layout (logical_monitor);