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Window mode will cast the content of a single window using the `MetaScreenCastWindow` interface. https://gitlab.gnome.org/GNOME/mutter/merge_requests/306
246 lines
7.5 KiB
C
246 lines
7.5 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-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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MetaWindowActor *window_actor;
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unsigned long actor_painted_handler_id;
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unsigned long actor_destroyed_handler_id;
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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 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 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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MetaRectangle stream_rect;
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MetaScreenCastWindow *screen_cast_window;
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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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screen_cast_window = META_SCREEN_CAST_WINDOW (window_src->window_actor);
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meta_screen_cast_window_capture_into (screen_cast_window, &stream_rect, data);
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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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MetaScreenCastWindow *screen_cast_window;
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MetaRectangle stream_rect;
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screen_cast_window = META_SCREEN_CAST_WINDOW (window_src->window_actor);
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meta_screen_cast_window_get_frame_bounds (screen_cast_window, 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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if (!window_src->window_actor)
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return;
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if (window_src->actor_painted_handler_id)
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g_signal_handler_disconnect (window_src->window_actor,
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window_src->actor_painted_handler_id);
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window_src->actor_painted_handler_id = 0;
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if (window_src->actor_destroyed_handler_id)
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g_signal_handler_disconnect (window_src->window_actor,
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window_src->actor_destroyed_handler_id);
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window_src->actor_destroyed_handler_id = 0;
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}
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static void
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window_actor_painted (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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meta_screen_cast_stream_src_maybe_record_frame (src);
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}
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static void
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window_actor_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->window_actor = NULL;
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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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MetaWindowActor *window_actor;
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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->window_actor = window_actor;
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window_src->actor_painted_handler_id =
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g_signal_connect_after (window_src->window_actor,
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"paint",
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G_CALLBACK (window_actor_painted),
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window_src);
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window_src->actor_destroyed_handler_id =
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g_signal_connect (window_src->window_actor,
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"destroy",
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G_CALLBACK (window_actor_destroyed),
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window_src);
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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 void
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meta_screen_cast_window_stream_src_record_frame (MetaScreenCastStreamSrc *src,
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uint8_t *data)
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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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}
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MetaScreenCastWindowStreamSrc *
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meta_screen_cast_window_stream_src_new (MetaScreenCastWindowStream *window_stream,
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GError **error)
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{
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return g_initable_new (META_TYPE_SCREEN_CAST_WINDOW_STREAM_SRC, NULL, error,
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"stream", window_stream,
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NULL);
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}
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static void
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meta_screen_cast_window_stream_src_init (MetaScreenCastWindowStreamSrc *window_src)
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{
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}
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static void
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meta_screen_cast_window_stream_src_class_init (MetaScreenCastWindowStreamSrcClass *klass)
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{
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MetaScreenCastStreamSrcClass *src_class =
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META_SCREEN_CAST_STREAM_SRC_CLASS (klass);
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src_class->get_specs = meta_screen_cast_window_stream_src_get_specs;
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src_class->enable = meta_screen_cast_window_stream_src_enable;
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src_class->disable = meta_screen_cast_window_stream_src_disable;
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src_class->record_frame = meta_screen_cast_window_stream_src_record_frame;
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src_class->get_videocrop = meta_screen_cast_window_stream_src_get_videocrop;
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}
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