mirror of
https://github.com/brl/mutter.git
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74ab2120fa
The new RecordVirtual API creates a virtual monitor, i.e. a region of the stage that isn't backed by real monitor hardware. It's intended to be used by e.g. network screens on active sessions, virtual remote desktop screens when running headless, and scenarios like that. A major difference between the current Record* API's is that RecordVirtual relies on PipeWire itself to negotiate the refresh rate and size, as it can't rely on any existing monitor, for those details. This also means that the virtual monitor is not created until the stream negotiation has finished and a virtual monitor resolution has been determined. Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1698>
613 lines
21 KiB
C
613 lines
21 KiB
C
/*
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* Copyright (C) 2021 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-virtual-stream-src.h"
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#include "backends/meta-crtc-mode.h"
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#include "backends/meta-cursor-tracker-private.h"
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#include "backends/meta-screen-cast-session.h"
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#include "backends/meta-stage-private.h"
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#include "backends/meta-virtual-monitor.h"
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#include "core/boxes-private.h"
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struct _MetaScreenCastVirtualStreamSrc
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{
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MetaScreenCastStreamSrc parent;
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MetaVirtualMonitor *virtual_monitor;
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gboolean cursor_bitmap_invalid;
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gboolean hw_cursor_inhibited;
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MetaStageWatch *watch;
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gulong position_invalidated_handler_id;
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gulong cursor_changed_handler_id;
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gulong monitors_changed_handler_id;
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};
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static void
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hw_cursor_inhibitor_iface_init (MetaHwCursorInhibitorInterface *iface);
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G_DEFINE_TYPE_WITH_CODE (MetaScreenCastVirtualStreamSrc,
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meta_screen_cast_virtual_stream_src,
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META_TYPE_SCREEN_CAST_STREAM_SRC,
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G_IMPLEMENT_INTERFACE (META_TYPE_HW_CURSOR_INHIBITOR,
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hw_cursor_inhibitor_iface_init))
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static gboolean
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meta_screen_cast_virtual_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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return FALSE;
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}
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static MetaBackend *
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backend_from_src (MetaScreenCastStreamSrc *src)
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{
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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 ClutterStageView *
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view_from_src (MetaScreenCastStreamSrc *src)
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{
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MetaScreenCastVirtualStreamSrc *virtual_src =
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META_SCREEN_CAST_VIRTUAL_STREAM_SRC (src);
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MetaVirtualMonitor *virtual_monitor = virtual_src->virtual_monitor;
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MetaCrtc *crtc = meta_virtual_monitor_get_crtc (virtual_monitor);
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MetaRenderer *renderer = meta_backend_get_renderer (backend_from_src (src));
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MetaRendererView *view = meta_renderer_get_view_for_crtc (renderer, crtc);
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return CLUTTER_STAGE_VIEW (view);
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}
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static ClutterStage *
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stage_from_src (MetaScreenCastStreamSrc *src)
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{
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return CLUTTER_STAGE (meta_backend_get_stage (backend_from_src (src)));
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}
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static gboolean
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is_redraw_queued (MetaScreenCastVirtualStreamSrc *virtual_src)
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{
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MetaScreenCastStreamSrc *src = META_SCREEN_CAST_STREAM_SRC (virtual_src);
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return clutter_stage_is_redraw_queued_on_view (stage_from_src (src),
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view_from_src (src));
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}
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ClutterStageView *
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meta_screen_cast_virtual_stream_src_get_view (MetaScreenCastVirtualStreamSrc *virtual_src)
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{
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return view_from_src (META_SCREEN_CAST_STREAM_SRC (virtual_src));
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}
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static void
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sync_cursor_state (MetaScreenCastVirtualStreamSrc *virtual_src)
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{
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MetaScreenCastStreamSrc *src = META_SCREEN_CAST_STREAM_SRC (virtual_src);
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MetaScreenCastRecordFlag flags;
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if (is_redraw_queued (virtual_src))
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return;
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if (meta_screen_cast_stream_src_pending_follow_up_frame (src))
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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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pointer_position_invalidated (MetaCursorTracker *cursor_tracker,
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MetaScreenCastVirtualStreamSrc *virtual_src)
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{
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sync_cursor_state (virtual_src);
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}
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static void
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cursor_changed (MetaCursorTracker *cursor_tracker,
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MetaScreenCastVirtualStreamSrc *virtual_src)
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{
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virtual_src->cursor_bitmap_invalid = TRUE;
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sync_cursor_state (virtual_src);
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}
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static void
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inhibit_hw_cursor (MetaScreenCastVirtualStreamSrc *virtual_src)
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{
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MetaHwCursorInhibitor *inhibitor;
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MetaBackend *backend;
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g_return_if_fail (!virtual_src->hw_cursor_inhibited);
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backend = backend_from_src (META_SCREEN_CAST_STREAM_SRC (virtual_src));
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inhibitor = META_HW_CURSOR_INHIBITOR (virtual_src);
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meta_backend_add_hw_cursor_inhibitor (backend, inhibitor);
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virtual_src->hw_cursor_inhibited = TRUE;
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}
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static void
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uninhibit_hw_cursor (MetaScreenCastVirtualStreamSrc *virtual_src)
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{
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MetaHwCursorInhibitor *inhibitor;
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MetaBackend *backend;
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g_return_if_fail (virtual_src->hw_cursor_inhibited);
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backend = backend_from_src (META_SCREEN_CAST_STREAM_SRC (virtual_src));
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inhibitor = META_HW_CURSOR_INHIBITOR (virtual_src);
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meta_backend_remove_hw_cursor_inhibitor (backend, inhibitor);
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virtual_src->hw_cursor_inhibited = FALSE;
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}
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static void
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actors_painted (MetaStage *stage,
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ClutterStageView *view,
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ClutterPaintContext *paint_context,
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gpointer user_data)
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{
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MetaScreenCastStreamSrc *src = META_SCREEN_CAST_STREAM_SRC (user_data);
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MetaScreenCastRecordFlag flags;
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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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add_watch (MetaScreenCastVirtualStreamSrc *virtual_src)
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{
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MetaScreenCastStreamSrc *src = META_SCREEN_CAST_STREAM_SRC (virtual_src);
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MetaStage *meta_stage = META_STAGE (stage_from_src (src));
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g_return_if_fail (!virtual_src->watch);
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virtual_src->watch = meta_stage_watch_view (meta_stage,
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view_from_src (src),
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META_STAGE_WATCH_AFTER_PAINT,
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actors_painted,
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virtual_src);
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}
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static void
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on_monitors_changed (MetaMonitorManager *monitor_manager,
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MetaScreenCastVirtualStreamSrc *virtual_src)
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{
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MetaScreenCastStreamSrc *src = META_SCREEN_CAST_STREAM_SRC (virtual_src);
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MetaStage *stage = META_STAGE (stage_from_src (src));
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meta_stage_remove_watch (stage, virtual_src->watch);
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virtual_src->watch = NULL;
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add_watch (virtual_src);
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}
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static void
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init_record_callbacks (MetaScreenCastVirtualStreamSrc *virtual_src)
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{
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MetaScreenCastStreamSrc *src = META_SCREEN_CAST_STREAM_SRC (virtual_src);
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MetaScreenCastStream *stream = meta_screen_cast_stream_src_get_stream (src);
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MetaBackend *backend = backend_from_src (src);
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MetaMonitorManager *monitor_manager =
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meta_backend_get_monitor_manager (backend);
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MetaCursorTracker *cursor_tracker =
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meta_backend_get_cursor_tracker (backend);
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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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virtual_src->position_invalidated_handler_id =
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g_signal_connect_after (cursor_tracker, "position-invalidated",
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G_CALLBACK (pointer_position_invalidated),
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virtual_src);
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virtual_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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virtual_src);
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G_GNUC_FALLTHROUGH;
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case META_SCREEN_CAST_CURSOR_MODE_EMBEDDED:
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case META_SCREEN_CAST_CURSOR_MODE_HIDDEN:
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add_watch (virtual_src);
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break;
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}
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if (meta_screen_cast_stream_get_cursor_mode (stream) ==
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META_SCREEN_CAST_CURSOR_MODE_EMBEDDED)
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inhibit_hw_cursor (virtual_src);
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virtual_src->monitors_changed_handler_id =
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g_signal_connect (monitor_manager, "monitors-changed-internal",
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G_CALLBACK (on_monitors_changed),
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virtual_src);
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}
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static void
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meta_screen_cast_virtual_stream_src_enable (MetaScreenCastStreamSrc *src)
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{
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MetaScreenCastVirtualStreamSrc *virtual_src =
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META_SCREEN_CAST_VIRTUAL_STREAM_SRC (src);
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MetaScreenCastStream *stream = meta_screen_cast_stream_src_get_stream (src);
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MetaBackend *backend = backend_from_src (src);
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MetaCursorTracker *cursor_tracker = meta_backend_get_cursor_tracker (backend);
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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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meta_cursor_tracker_track_position (cursor_tracker);
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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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init_record_callbacks (virtual_src);
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clutter_actor_queue_redraw_with_clip (CLUTTER_ACTOR (stage_from_src (src)),
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NULL);
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clutter_stage_schedule_update (stage_from_src (src));
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}
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static void
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meta_screen_cast_virtual_stream_src_disable (MetaScreenCastStreamSrc *src)
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{
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MetaScreenCastVirtualStreamSrc *virtual_src =
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META_SCREEN_CAST_VIRTUAL_STREAM_SRC (src);
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MetaScreenCastStream *stream = meta_screen_cast_stream_src_get_stream (src);
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MetaBackend *backend = backend_from_src (src);
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MetaCursorTracker *cursor_tracker = meta_backend_get_cursor_tracker (backend);
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MetaMonitorManager *monitor_manager =
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meta_backend_get_monitor_manager (backend);
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if (virtual_src->hw_cursor_inhibited)
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uninhibit_hw_cursor (virtual_src);
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if (virtual_src->watch)
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{
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meta_stage_remove_watch (META_STAGE (stage_from_src (src)),
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virtual_src->watch);
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virtual_src->watch = NULL;
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}
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g_clear_signal_handler (&virtual_src->position_invalidated_handler_id,
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cursor_tracker);
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g_clear_signal_handler (&virtual_src->cursor_changed_handler_id,
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cursor_tracker);
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g_clear_signal_handler (&virtual_src->monitors_changed_handler_id,
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monitor_manager);
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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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meta_cursor_tracker_untrack_position (cursor_tracker);
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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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g_clear_object (&virtual_src->virtual_monitor);
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}
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static gboolean
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meta_screen_cast_virtual_stream_src_record_to_buffer (MetaScreenCastStreamSrc *src,
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int width,
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int height,
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int stride,
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uint8_t *data,
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GError **error)
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{
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clutter_stage_capture_view_into (stage_from_src (src),
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view_from_src (src),
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NULL,
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data,
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stride);
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return TRUE;
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}
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static gboolean
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meta_screen_cast_virtual_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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ClutterStageView *view;
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CoglFramebuffer *view_framebuffer;
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view = view_from_src (src);
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view_framebuffer = clutter_stage_view_get_framebuffer (view);
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if (!cogl_blit_framebuffer (view_framebuffer,
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framebuffer,
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0, 0,
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0, 0,
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cogl_framebuffer_get_width (view_framebuffer),
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cogl_framebuffer_get_height (view_framebuffer),
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error))
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return FALSE;
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cogl_framebuffer_flush (framebuffer);
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return TRUE;
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}
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static void
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meta_screen_cast_virtual_stream_record_follow_up (MetaScreenCastStreamSrc *src)
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{
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MetaRectangle damage;
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clutter_stage_view_get_layout (view_from_src (src), &damage);
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damage.width = 1;
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damage.height = 1;
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clutter_actor_queue_redraw_with_clip (CLUTTER_ACTOR (stage_from_src (src)),
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&damage);
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}
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static gboolean
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is_cursor_in_stream (MetaScreenCastVirtualStreamSrc *virtual_src)
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{
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MetaScreenCastStreamSrc *src = META_SCREEN_CAST_STREAM_SRC (virtual_src);
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MetaBackend *backend = backend_from_src (src);
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MetaCursorRenderer *cursor_renderer =
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meta_backend_get_cursor_renderer (backend);
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ClutterStageView *stage_view = view_from_src (src);
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MetaRectangle view_layout;
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graphene_rect_t view_rect;
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MetaCursorSprite *cursor_sprite;
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clutter_stage_view_get_layout (stage_view, &view_layout);
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view_rect = meta_rectangle_to_graphene_rect (&view_layout);
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cursor_sprite = meta_cursor_renderer_get_cursor (cursor_renderer);
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if (cursor_sprite)
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{
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graphene_rect_t cursor_rect;
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cursor_rect = meta_cursor_renderer_calculate_rect (cursor_renderer,
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cursor_sprite);
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return graphene_rect_intersection (&cursor_rect, &view_rect, NULL);
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}
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else
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{
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MetaCursorTracker *cursor_tracker =
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meta_backend_get_cursor_tracker (backend);
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graphene_point_t cursor_position;
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meta_cursor_tracker_get_pointer (cursor_tracker, &cursor_position, NULL);
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return graphene_rect_contains_point (&view_rect,
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&cursor_position);
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}
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}
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static void
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meta_screen_cast_virtual_stream_src_set_cursor_metadata (MetaScreenCastStreamSrc *src,
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struct spa_meta_cursor *spa_meta_cursor)
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{
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MetaScreenCastVirtualStreamSrc *virtual_src =
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META_SCREEN_CAST_VIRTUAL_STREAM_SRC (src);
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MetaBackend *backend = backend_from_src (src);
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MetaCursorRenderer *cursor_renderer =
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meta_backend_get_cursor_renderer (backend);
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MetaCursorTracker *cursor_tracker =
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meta_backend_get_cursor_tracker (backend);
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MetaCursorSprite *cursor_sprite;
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ClutterStageView *stage_view;
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MetaRectangle view_layout;
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float view_scale;
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graphene_rect_t view_rect;
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graphene_point_t cursor_position;
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int x, y;
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cursor_sprite = meta_cursor_renderer_get_cursor (cursor_renderer);
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if (!meta_cursor_tracker_get_pointer_visible (cursor_tracker) ||
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!is_cursor_in_stream (virtual_src))
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{
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meta_screen_cast_stream_src_unset_cursor_metadata (src,
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spa_meta_cursor);
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return;
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}
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stage_view = view_from_src (src);
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clutter_stage_view_get_layout (stage_view, &view_layout);
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view_rect = meta_rectangle_to_graphene_rect (&view_layout);
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view_scale = clutter_stage_view_get_scale (stage_view);
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meta_cursor_tracker_get_pointer (cursor_tracker, &cursor_position, NULL);
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cursor_position.x -= view_rect.origin.x;
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cursor_position.y -= view_rect.origin.y;
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cursor_position.x *= view_scale;
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cursor_position.y *= view_scale;
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x = (int) roundf (cursor_position.x);
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y = (int) roundf (cursor_position.y);
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if (virtual_src->cursor_bitmap_invalid)
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{
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if (cursor_sprite)
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{
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float cursor_scale;
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float scale;
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cursor_scale = meta_cursor_sprite_get_texture_scale (cursor_sprite);
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scale = view_scale * cursor_scale;
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meta_screen_cast_stream_src_set_cursor_sprite_metadata (src,
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spa_meta_cursor,
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cursor_sprite,
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x, y,
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scale);
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}
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else
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{
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meta_screen_cast_stream_src_set_empty_cursor_sprite_metadata (src,
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spa_meta_cursor,
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x, y);
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}
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virtual_src->cursor_bitmap_invalid = FALSE;
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}
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else
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{
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meta_screen_cast_stream_src_set_cursor_position_metadata (src,
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spa_meta_cursor,
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x, y);
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}
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}
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static MetaVirtualMonitor *
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create_virtual_monitor (MetaScreenCastVirtualStreamSrc *virtual_src,
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struct spa_video_info_raw *video_format,
|
|
GError **error)
|
|
{
|
|
MetaScreenCastStreamSrc *src = META_SCREEN_CAST_STREAM_SRC (virtual_src);
|
|
MetaBackend *backend = backend_from_src (src);
|
|
MetaMonitorManager *monitor_manager =
|
|
meta_backend_get_monitor_manager (backend);
|
|
static int virtual_monitor_src_seq = 0;
|
|
int width, height;
|
|
float refresh_rate;
|
|
g_autofree char *serial = NULL;
|
|
g_autoptr (MetaVirtualMonitorInfo) info = NULL;
|
|
|
|
width = video_format->size.width;
|
|
height = video_format->size.height;
|
|
refresh_rate = ((float) video_format->max_framerate.num /
|
|
video_format->max_framerate.denom);
|
|
serial = g_strdup_printf ("0x%.6x", ++virtual_monitor_src_seq);
|
|
info = meta_virtual_monitor_info_new (width, height, refresh_rate,
|
|
"MetaVendor",
|
|
"Virtual remote monitor",
|
|
serial);
|
|
return meta_monitor_manager_create_virtual_monitor (monitor_manager,
|
|
info,
|
|
error);
|
|
}
|
|
|
|
static void
|
|
ensure_virtual_monitor (MetaScreenCastVirtualStreamSrc *virtual_src,
|
|
struct spa_video_info_raw *video_format)
|
|
{
|
|
MetaScreenCastStreamSrc *src = META_SCREEN_CAST_STREAM_SRC (virtual_src);
|
|
MetaBackend *backend = backend_from_src (src);
|
|
MetaMonitorManager *monitor_manager =
|
|
meta_backend_get_monitor_manager (backend);
|
|
g_autoptr (GError) error = NULL;
|
|
MetaVirtualMonitor *virtual_monitor;
|
|
|
|
virtual_monitor = virtual_src->virtual_monitor;
|
|
if (virtual_monitor)
|
|
{
|
|
MetaCrtcMode *crtc_mode =
|
|
meta_virtual_monitor_get_crtc_mode (virtual_monitor);
|
|
const MetaCrtcModeInfo *mode_info = meta_crtc_mode_get_info (crtc_mode);
|
|
|
|
if (mode_info->width == video_format->size.width &&
|
|
mode_info->height == video_format->size.height)
|
|
return;
|
|
|
|
g_clear_object (&virtual_src->virtual_monitor);
|
|
}
|
|
|
|
virtual_monitor = create_virtual_monitor (virtual_src, video_format, &error);
|
|
if (!virtual_monitor)
|
|
{
|
|
MetaScreenCastStreamSrc *src = META_SCREEN_CAST_STREAM_SRC (virtual_src);
|
|
|
|
g_warning ("Failed to create virtual monitor with size %dx%d: %s",
|
|
video_format->size.width, video_format->size.height,
|
|
error->message);
|
|
meta_screen_cast_stream_src_close (src);
|
|
return;
|
|
}
|
|
virtual_src->virtual_monitor = virtual_monitor;
|
|
|
|
meta_monitor_manager_reload (monitor_manager);
|
|
}
|
|
|
|
static void
|
|
meta_screen_cast_virtual_stream_src_notify_params_updated (MetaScreenCastStreamSrc *src,
|
|
struct spa_video_info_raw *video_format)
|
|
{
|
|
MetaScreenCastVirtualStreamSrc *virtual_src =
|
|
META_SCREEN_CAST_VIRTUAL_STREAM_SRC (src);
|
|
|
|
ensure_virtual_monitor (virtual_src, video_format);
|
|
}
|
|
|
|
MetaScreenCastVirtualStreamSrc *
|
|
meta_screen_cast_virtual_stream_src_new (MetaScreenCastVirtualStream *virtual_stream,
|
|
GError **error)
|
|
{
|
|
return g_initable_new (META_TYPE_SCREEN_CAST_VIRTUAL_STREAM_SRC, NULL, error,
|
|
"stream", virtual_stream,
|
|
NULL);
|
|
}
|
|
|
|
static gboolean
|
|
meta_screen_cast_virtual_stream_src_is_cursor_inhibited (MetaHwCursorInhibitor *inhibitor)
|
|
{
|
|
MetaScreenCastVirtualStreamSrc *virtual_src =
|
|
META_SCREEN_CAST_VIRTUAL_STREAM_SRC (inhibitor);
|
|
|
|
return is_cursor_in_stream (virtual_src);
|
|
}
|
|
|
|
static void
|
|
hw_cursor_inhibitor_iface_init (MetaHwCursorInhibitorInterface *iface)
|
|
{
|
|
iface->is_cursor_inhibited =
|
|
meta_screen_cast_virtual_stream_src_is_cursor_inhibited;
|
|
}
|
|
|
|
static void
|
|
meta_screen_cast_virtual_stream_src_init (MetaScreenCastVirtualStreamSrc *virtual_src)
|
|
{
|
|
}
|
|
|
|
static void
|
|
meta_screen_cast_virtual_stream_src_class_init (MetaScreenCastVirtualStreamSrcClass *klass)
|
|
{
|
|
MetaScreenCastStreamSrcClass *src_class =
|
|
META_SCREEN_CAST_STREAM_SRC_CLASS (klass);
|
|
|
|
src_class->get_specs = meta_screen_cast_virtual_stream_src_get_specs;
|
|
src_class->enable = meta_screen_cast_virtual_stream_src_enable;
|
|
src_class->disable = meta_screen_cast_virtual_stream_src_disable;
|
|
src_class->record_to_buffer =
|
|
meta_screen_cast_virtual_stream_src_record_to_buffer;
|
|
src_class->record_to_framebuffer =
|
|
meta_screen_cast_virtual_stream_src_record_to_framebuffer;
|
|
src_class->record_follow_up =
|
|
meta_screen_cast_virtual_stream_record_follow_up;
|
|
src_class->set_cursor_metadata =
|
|
meta_screen_cast_virtual_stream_src_set_cursor_metadata;
|
|
src_class->notify_params_updated =
|
|
meta_screen_cast_virtual_stream_src_notify_params_updated;
|
|
}
|