xdg-desktop-portal-gnome/SOURCES/0007-screencast-pass-stream-ids.patch

From c865ffdb24d1a945f36a1bf873fe0900cbbade14 Mon Sep 17 00:00:00 2001
From: Georges Basile Stavracas Neto <georges.stavracas@gmail.com>
Date: Thu, 11 Nov 2021 00:05:27 -0300
Subject: [PATCH] screencast: Pass stream ids

The stream id is any string that can uniquely
identify a stream within a screencast session.
Add that to the list of stream properties.

For now, only use a simple positional integer
as id.
---
 src/gnomescreencast.c  | 21 ++++++++++++++++++---
 src/screencast.c       |  5 ++++-
 src/screencast.h       |  1 +
 src/screencastwidget.c |  4 ++++
 4 files changed, 27 insertions(+), 4 deletions(-)

diff --git a/src/gnomescreencast.c b/src/gnomescreencast.c
index 3f8539c..482fcd0 100644
--- a/src/gnomescreencast.c
+++ b/src/gnomescreencast.c
@@ -59,6 +59,7 @@ typedef struct _GnomeScreenCastStream
 
   ScreenCastSourceType source_type;
 
+  uint32_t id;
   char *path;
   OrgGnomeMutterScreenCastStream *proxy;
 
@@ -219,6 +220,7 @@ void
 gnome_screen_cast_session_add_stream_properties (GnomeScreenCastSession *gnome_screen_cast_session,
                                                  GVariantBuilder *streams_builder)
 {
+  char id[64] = { 0, };
   GList *streams;
   GList *l;
 
@@ -234,6 +236,10 @@ gnome_screen_cast_session_add_stream_properties (GnomeScreenCastSession *gnome_s
 
       g_variant_builder_init (&stream_properties_builder, G_VARIANT_TYPE_VARDICT);
 
+      g_snprintf (id, G_N_ELEMENTS (id), "%u", stream->id);
+      g_variant_builder_add (&stream_properties_builder, "{sv}",
+                             "id",
+                             g_variant_new ("s", id));
       g_variant_builder_add (&stream_properties_builder, "{sv}",
                              "source_type",
                              g_variant_new ("u", stream->source_type));
@@ -275,6 +281,7 @@ cursor_mode_to_gnome_cursor_mode (ScreenCastCursorMode cursor_mode)
 
 static gboolean
 gnome_screen_cast_session_record_window (GnomeScreenCastSession  *gnome_screen_cast_session,
+                                         uint32_t                 id,
                                          Window                  *window,
                                          ScreenCastSelection     *select,
                                          GError                 **error)
@@ -327,6 +334,7 @@ gnome_screen_cast_session_record_window (GnomeScreenCastSession  *gnome_screen_c
   stream->session = gnome_screen_cast_session;
   stream->path = g_strdup (stream_path);
   stream->proxy = stream_proxy;
+  stream->id = id;
 
   parameters = org_gnome_mutter_screen_cast_stream_get_parameters (stream->proxy);
   if (parameters)
@@ -357,6 +365,7 @@ gnome_screen_cast_session_record_window (GnomeScreenCastSession  *gnome_screen_c
 
 static gboolean
 gnome_screen_cast_session_record_monitor (GnomeScreenCastSession  *gnome_screen_cast_session,
+                                          uint32_t                 id,
                                           Monitor                 *monitor,
                                           ScreenCastSelection     *select,
                                           GError                 **error)
@@ -409,6 +418,7 @@ gnome_screen_cast_session_record_monitor (GnomeScreenCastSession  *gnome_screen_
   stream->session = gnome_screen_cast_session;
   stream->path = g_strdup (stream_path);
   stream->proxy = stream_proxy;
+  stream->id = id;
 
   parameters = org_gnome_mutter_screen_cast_stream_get_parameters (stream->proxy);
   if (parameters)
@@ -453,6 +463,7 @@ gnome_screen_cast_session_record_selections (GnomeScreenCastSession  *gnome_scre
         {
         case SCREEN_CAST_SOURCE_TYPE_MONITOR:
           if (!gnome_screen_cast_session_record_monitor (gnome_screen_cast_session,
+                                                         info->id,
                                                          info->data.monitor,
                                                          select,
                                                          error))
@@ -460,6 +471,7 @@ gnome_screen_cast_session_record_selections (GnomeScreenCastSession  *gnome_scre
           break;
         case SCREEN_CAST_SOURCE_TYPE_WINDOW:
           if (!gnome_screen_cast_session_record_window (gnome_screen_cast_session,
+                                                        info->id,
                                                         info->data.window,
                                                         select,
                                                         error))
diff --git a/src/screencast.c b/src/screencast.c
index 55a3e5c..3be8337 100644
--- a/src/screencast.c
+++ b/src/screencast.c
@@ -162,7 +162,7 @@ serialize_streams_as_restore_data (ScreenCastSession *screen_cast_session,
 
       g_variant_builder_add (&impl_builder,
                              "(uuv)",
-                             i,
+                             info->id,
                              info->type,
                              stream_variant);
     }
@@ -502,6 +502,7 @@ restore_stream_from_data (ScreenCastSession *screen_cast_session)
             info = g_new0 (ScreenCastStreamInfo, 1);
             info->type = SCREEN_CAST_SOURCE_TYPE_MONITOR;
             info->data.monitor = monitor;
+            info->id = id;
             g_ptr_array_add (streams, info);
           }
           break;
@@ -526,6 +527,7 @@ restore_stream_from_data (ScreenCastSession *screen_cast_session)
             info = g_new0 (ScreenCastStreamInfo, 1);
             info->type = SCREEN_CAST_SOURCE_TYPE_WINDOW;
             info->data.window = window;
+            info->id = id;
             g_ptr_array_add (streams, info);
           }
           break;
diff --git a/src/screencast.h b/src/screencast.h
index d78066e..3d64b4a 100644
--- a/src/screencast.h
+++ b/src/screencast.h
@@ -55,6 +55,7 @@ typedef struct _ScreenCastSelection
 typedef struct
 {
   ScreenCastSourceType type;
+  uint32_t id;
   union {
     Monitor *monitor;
     Window *window;
diff --git a/src/screencastwidget.c b/src/screencastwidget.c
index c100ad9..20df194 100644
--- a/src/screencastwidget.c
+++ b/src/screencastwidget.c
@@ -597,6 +597,7 @@ screen_cast_widget_get_selected_streams (ScreenCastWidget *self)
   g_autoptr(GPtrArray) streams = NULL;
   g_autoptr(GList) selected_monitor_rows = NULL;
   g_autoptr(GList) selected_window_rows = NULL;
+  uint32_t id = 0;
   GList *l;
 
   streams = g_ptr_array_new_with_free_func (g_free);
@@ -620,6 +621,7 @@ screen_cast_widget_get_selected_streams (ScreenCastWidget *self)
       info = g_new0 (ScreenCastStreamInfo, 1);
       info->type = SCREEN_CAST_SOURCE_TYPE_MONITOR;
       info->data.monitor = monitor;
+      info->id = id++;
       g_ptr_array_add (streams, info);
     }
 
@@ -634,6 +636,7 @@ screen_cast_widget_get_selected_streams (ScreenCastWidget *self)
       info = g_new0 (ScreenCastStreamInfo, 1);
       info->type = SCREEN_CAST_SOURCE_TYPE_WINDOW;
       info->data.window = window;
+      info->id = id++;
       g_ptr_array_add (streams, info);
     }