[retro-gtk] retro-gobject: Default aspect ratio to width/height

[Adrien Plazas <aplazas src gnome org>]

commit 2ecf599e5373b00ba0b5810b38305cd36ad382f1
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Thu Jan 26 10:59:20 2017 +0100

    retro-gobject: Default aspect ratio to width/height
    
    Follow the Libretro specification and default the aspect ration to
    width/height.
    
    This avoids having an invalid aspect ratio as long as the width and
    height are valid.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=777489

 retro-gobject/retro-environment.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)
---
diff --git a/retro-gobject/retro-environment.c b/retro-gobject/retro-environment.c
index 3f70e5a..d769943 100644
--- a/retro-gobject/retro-environment.c
+++ b/retro-gobject/retro-environment.c
@@ -429,7 +429,10 @@ void retro_core_set_system_av_info (RetroCore *self, RetroSystemAvInfo *system_a
                self->_frames_per_second = system_av_info->timing.fps;
                g_object_notify (G_OBJECT (self), "frames-per-second");
        }
-       self->aspect_ratio = system_av_info->geometry.aspect_ratio;
+       if (system_av_info->geometry.aspect_ratio > 0.f)
+               self->aspect_ratio = system_av_info->geometry.aspect_ratio;
+       else
+               self->aspect_ratio = system_av_info->geometry.base_width / 
system_av_info->geometry.base_height;
        self->sample_rate = system_av_info->timing.sample_rate;
 }