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eglglessink: Handle frame scaling to fill surface

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This commit is contained in:
Reynaldo H. Verdejo Pinochet 2012-09-21 01:09:11 -03:00 committed by Sebastian Dröge
parent 90d5b76dc5
commit 8018681187
2 changed files with 33 additions and 10 deletions
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42
ext/eglgles/gsteglglessink.c
View file

@ -206,6 +206,7 @@ enum
PROP_0,
PROP_SILENT,
PROP_CAN_CREATE_WINDOW,
PROP_KEEP_ASPECT_RATIO,
PROP_DEFAULT_HEIGHT,
PROP_DEFAULT_WIDTH,
PROP_FORCE_RENDERING_SLOW
@ -1519,7 +1520,9 @@ static GstFlowReturn
gst_eglglessink_render_and_display (GstEglGlesSink * eglglessink,
GstBuffer * buf)
{
GstVideoRectangle frame, surface;
gint w, h;
#ifdef EGL_FAST_RENDERING_POSSIBLE
EGLImageKHR img = EGL_NO_IMAGE_KHR;
EGLint attrs[] = { EGL_IMAGE_PRESERVED_KHR,
@ -1534,6 +1537,7 @@ gst_eglglessink_render_and_display (GstEglGlesSink * eglglessink,
w = GST_VIDEO_SINK_WIDTH (eglglessink);
h = GST_VIDEO_SINK_HEIGHT (eglglessink);
GST_DEBUG_OBJECT (eglglessink,
"Got good buffer %p. Sink geometry is %dx%d size %d", buf, w, h,
GST_BUFFER_SIZE (buf));
@ -1595,20 +1599,28 @@ gst_eglglessink_render_and_display (GstEglGlesSink * eglglessink,
/* If no one has set a display rectangle on us initialize
* a sane default. According to the docs on the xOverlay
* interface we are supposed to fill the overlay 100%
*
* XXX: If this is not desired just use calculated pos with
* lower left corner as 0,0 and w,h from the decoded frame.
*/
if (!eglglessink->display_region.w || !eglglessink->display_region.h)
{
eglglessink->display_region.x = 0;
eglglessink->display_region.y = 0;
eglglessink->display_region.w = eglglessink->surface_width;
eglglessink->display_region.h = eglglessink->surface_height;
}
/* XXX: Do we really want to lock here? */
if (!eglglessink->keep_aspect_ratio) {
eglglessink->display_region.x = 0;
eglglessink->display_region.y = 0;
eglglessink->display_region.w = eglglessink->surface_width;
eglglessink->display_region.h = eglglessink->surface_height;
} else {
/* XXX: Proly consider display pixel aspect ratio too? */
frame.w = w;
frame.h = h;
surface.w = eglglessink->surface_width;
surface.h = eglglessink->surface_height;
gst_video_sink_center_rect (frame, surface,
&eglglessink->display_region, TRUE);
}
glViewport (eglglessink->display_region.x, eglglessink->display_region.y,
eglglessink->display_region.w, eglglessink->display_region.h);
glViewport (eglglessink->display_region.x, eglglessink->display_region.y,
eglglessink->display_region.w, eglglessink->display_region.h);
}
glDrawElements (GL_TRIANGLE_STRIP, 4, GL_UNSIGNED_SHORT, 0);
if (got_gl_error ("glDrawElements"))
@ -1804,6 +1816,9 @@ gst_eglglessink_set_property (GObject * object, guint prop_id,
case PROP_FORCE_RENDERING_SLOW:
eglglessink->force_rendering_slow = g_value_get_boolean (value);
break;
case PROP_KEEP_ASPECT_RATIO:
eglglessink->keep_aspect_ratio = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -1836,6 +1851,9 @@ gst_eglglessink_get_property (GObject * object, guint prop_id,
case PROP_FORCE_RENDERING_SLOW:
g_value_set_boolean (value, eglglessink->force_rendering_slow);
break;
case PROP_KEEP_ASPECT_RATIO:
g_value_set_boolean (value, eglglessink->keep_aspect_ratio);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
@ -1891,6 +1909,9 @@ gst_eglglessink_class_init (GstEglGlesSinkClass * klass)
g_object_class_install_property (gobject_class, PROP_FORCE_RENDERING_SLOW,
g_param_spec_boolean ("force_rendering_slow", "ForceRenderingSlow",
"Force slow rendering path?", FALSE, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, PROP_KEEP_ASPECT_RATIO,
g_param_spec_boolean ("keep_aspect_ratio", "KeepAspectRatio",
"Keep aspect ratio while scaling?", TRUE, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, PROP_DEFAULT_WIDTH,
g_param_spec_int ("window_default_width", "DefaultWidth",
@ -1918,6 +1939,7 @@ gst_eglglessink_init (GstEglGlesSink * eglglessink,
eglglessink->running = FALSE; /* XXX: unused */
eglglessink->can_create_window = TRUE;
eglglessink->force_rendering_slow = FALSE;
eglglessink->keep_aspect_ratio = TRUE;
eglglessink->flow_lock = g_mutex_new ();
}

1
ext/eglgles/gsteglglessink.h
View file

@ -158,6 +158,7 @@ struct _GstEglGlesSink
gboolean silent;
gboolean can_create_window;
gboolean force_rendering_slow;
gboolean keep_aspect_ratio;
gint window_default_width;
gint window_default_height;
EGLint surface_width;