[retro-gtk] environment: Implement RETRO_ENVIRONMENT_SET_GEOMETRY

[Adrien Plazas <aplazas src gnome org>]

commit cd3f053edacfc41c02be951e0b8251e6dd85b5ec
Author: Exalm <exalm7659 gmail com>
Date:   Thu Apr 26 17:08:12 2018 +0500

    environment: Implement RETRO_ENVIRONMENT_SET_GEOMETRY
    
    Allows cores to change aspect ratio separately from framerate.

 retro-gtk/retro-core-private.h |  2 ++
 retro-gtk/retro-core.c         | 17 ++++++++++++-----
 retro-gtk/retro-environment.c  | 13 ++++++++++++-
 3 files changed, 26 insertions(+), 6 deletions(-)
---
diff --git a/retro-gtk/retro-core-private.h b/retro-gtk/retro-core-private.h
index 2cf046c..ad128aa 100644
--- a/retro-gtk/retro-core-private.h
+++ b/retro-gtk/retro-core-private.h
@@ -66,6 +66,8 @@ void retro_core_set_support_no_game (RetroCore *self,
 gchar *retro_core_get_name (RetroCore *self);
 void retro_core_set_system_av_info (RetroCore         *self,
                                     RetroSystemAvInfo *system_av_info);
+void retro_core_set_geometry (RetroCore         *self,
+                              RetroGameGeometry *geometry);
 void retro_core_poll_controllers (RetroCore *self);
 gint16 retro_core_get_controller_input_state (RetroCore  *self,
                                               uint        port,
diff --git a/retro-gtk/retro-core.c b/retro-gtk/retro-core.c
index 598aee1..1a5bdf6 100644
--- a/retro-gtk/retro-core.c
+++ b/retro-gtk/retro-core.c
@@ -603,14 +603,21 @@ retro_core_set_system_av_info (RetroCore         *self,
     self->frames_per_second = system_av_info->timing.fps;
     g_object_notify (G_OBJECT (self), "frames-per-second");
   }
-  if (system_av_info->geometry.aspect_ratio > 0.f)
-    self->aspect_ratio = system_av_info->geometry.aspect_ratio;
-  else
-    self->aspect_ratio = (float) system_av_info->geometry.base_width /
-                             (float) system_av_info->geometry.base_height;
+  retro_core_set_geometry (self, &system_av_info->geometry);
   self->sample_rate = system_av_info->timing.sample_rate;
 }
 
+void
+retro_core_set_geometry (RetroCore         *self,
+                         RetroGameGeometry *geometry)
+{
+  if (geometry->aspect_ratio > 0.f)
+    self->aspect_ratio = geometry->aspect_ratio;
+  else
+    self->aspect_ratio = (float) geometry->base_width /
+                         (float) geometry->base_height;
+}
+
 /**
  * retro_core_get_name:
  * @self: a #RetroCore
diff --git a/retro-gtk/retro-environment.c b/retro-gtk/retro-environment.c
index 0a94048..82a9d18 100644
--- a/retro-gtk/retro-environment.c
+++ b/retro-gtk/retro-environment.c
@@ -214,6 +214,15 @@ set_disk_control_interface (RetroCore                *self,
   return TRUE;
 }
 
+static gboolean
+set_geometry (RetroCore         *self,
+              RetroGameGeometry *geometry)
+{
+  retro_core_set_geometry (self, geometry);
+
+  return TRUE;
+}
+
 static gboolean
 set_input_descriptors (RetroCore            *self,
                        RetroInputDescriptor *descriptors)
@@ -347,6 +356,9 @@ environment_core_command (RetroCore *self,
   case RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE:
     set_disk_control_interface (self, (RetroDiskControlCallback *) data);
 
+  case RETRO_ENVIRONMENT_SET_GEOMETRY:
+    return set_geometry (self, (RetroGameGeometry *) data);
+
   case RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS:
     return set_input_descriptors (self, (RetroInputDescriptor *) data);
 
@@ -383,7 +395,6 @@ environment_core_command (RetroCore *self,
   case RETRO_ENVIRONMENT_SET_AUDIO_CALLBACK:
   case RETRO_ENVIRONMENT_SET_CONTROLLER_INFO:
   case RETRO_ENVIRONMENT_SET_FRAME_TIME_CALLBACK:
-  case RETRO_ENVIRONMENT_SET_GEOMETRY:
   case RETRO_ENVIRONMENT_SET_HW_RENDER:
   case RETRO_ENVIRONMENT_SET_MEMORY_MAPS:
   case RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL: