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Add OpenGL reflection effect ("use-reflection").

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This commit is contained in:
gb 2010-03-29 15:59:44 +00:00
parent 201a7c9ce1
commit c5ff596316
2 changed files with 148 additions and 12 deletions
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159
sys/vaapisink/gstvaapisink.c
View file

@ -80,7 +80,8 @@ enum {
PROP_USE_GLX,
PROP_DISPLAY,
PROP_FULLSCREEN,
PROP_SYNCHRONOUS
PROP_SYNCHRONOUS,
PROP_USE_REFLECTION
};
static GstVaapiDisplay *
@ -268,6 +269,125 @@ gst_vaapisink_set_caps(GstBaseSink *base_sink, GstCaps *caps)
return TRUE;
}
#if USE_VAAPISINK_GLX
static void
render_background(GstVaapiSink *sink)
{
/* Original code from Mirco Muller (MacSlow):
<http://cgit.freedesktop.org/~macslow/gl-gst-player/> */
GLfloat fStartX = 0.0f;
GLfloat fStartY = 0.0f;
GLfloat fWidth = (GLfloat)sink->window_rect.width;
GLfloat fHeight = (GLfloat)sink->window_rect.height;
glClear(GL_COLOR_BUFFER_BIT);
glBegin(GL_QUADS);
{
/* top third, darker grey to white */
glColor3f(0.85f, 0.85f, 0.85f);
glVertex3f(fStartX, fStartY, 0.0f);
glColor3f(0.85f, 0.85f, 0.85f);
glVertex3f(fStartX + fWidth, fStartY, 0.0f);
glColor3f(1.0f, 1.0f, 1.0f);
glVertex3f(fStartX + fWidth, fStartY + fHeight / 3.0f, 0.0f);
glColor3f(1.0f, 1.0f, 1.0f);
glVertex3f(fStartX, fStartY + fHeight / 3.0f, 0.0f);
/* middle third, just plain white */
glColor3f(1.0f, 1.0f, 1.0f);
glVertex3f(fStartX, fStartY + fHeight / 3.0f, 0.0f);
glVertex3f(fStartX + fWidth, fStartY + fHeight / 3.0f, 0.0f);
glVertex3f(fStartX + fWidth, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
glVertex3f(fStartX, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
/* bottom third, white to lighter grey */
glColor3f(1.0f, 1.0f, 1.0f);
glVertex3f(fStartX, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
glColor3f(1.0f, 1.0f, 1.0f);
glVertex3f(fStartX + fWidth, fStartY + 2.0f * fHeight / 3.0f, 0.0f);
glColor3f(0.62f, 0.66f, 0.69f);
glVertex3f(fStartX + fWidth, fStartY + fHeight, 0.0f);
glColor3f(0.62f, 0.66f, 0.69f);
glVertex3f(fStartX, fStartY + fHeight, 0.0f);
}
glEnd();
}
static void
render_frame(GstVaapiSink *sink)
{
const guint w = sink->window_rect.width;
const guint h = sink->window_rect.height;
glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
glBegin(GL_QUADS);
{
glTexCoord2f(0.0f, 0.0f); glVertex2i(0, 0);
glTexCoord2f(0.0f, 1.0f); glVertex2i(0, h);
glTexCoord2f(1.0f, 1.0f); glVertex2i(w, h);
glTexCoord2f(1.0f, 0.0f); glVertex2i(w, 0);
}
glEnd();
}
static void
render_reflection(GstVaapiSink *sink)
{
const guint w = sink->window_rect.width;
const guint h = sink->window_rect.height;
const guint rh = h / 5;
GLfloat ry = 1.0f - (GLfloat)rh / (GLfloat)h;
glBegin(GL_QUADS);
{
glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
glTexCoord2f(0.0f, 1.0f); glVertex2i(0, 0);
glTexCoord2f(1.0f, 1.0f); glVertex2i(w, 0);
glColor4f(1.0f, 1.0f, 1.0f, 0.0f);
glTexCoord2f(1.0f, ry); glVertex2i(w, rh);
glTexCoord2f(0.0f, ry); glVertex2i(0, rh);
}
glEnd();
}
static gboolean
gst_vaapisink_show_frame_glx(GstVaapiSink *sink)
{
GstVaapiWindowGLX * const window = GST_VAAPI_WINDOW_GLX(sink->window);
GLenum target;
GLuint texture;
if (!sink->use_reflection)
return gst_vaapi_window_glx_put_texture(window, sink->texture,
NULL, &sink->window_rect);
target = gst_vaapi_texture_get_target(sink->texture);
texture = gst_vaapi_texture_get_id(sink->texture);
if (target != GL_TEXTURE_2D || !texture)
return FALSE;
render_background(sink);
glEnable(target);
glBindTexture(target, texture);
{
glPushMatrix();
glRotatef(20.0f, 0.0f, 1.0f, 0.0f);
glTranslatef(50.0f, 0.0f, 0.0f);
render_frame(sink);
glPushMatrix();
glTranslatef(0.0, (GLfloat)sink->window_rect.height + 5.0f, 0.0f);
render_reflection(sink);
glPopMatrix();
glPopMatrix();
}
glBindTexture(target, 0);
glDisable(target);
return TRUE;
}
#endif
static GstFlowReturn
gst_vaapisink_show_frame(GstBaseSink *base_sink, GstBuffer *buffer)
{
@ -306,8 +426,7 @@ gst_vaapisink_show_frame(GstBaseSink *base_sink, GstBuffer *buffer)
GST_DEBUG("could not transfer VA surface to texture");
return GST_FLOW_UNEXPECTED;
}
if (!gst_vaapi_window_glx_put_texture(window, sink->texture,
NULL, &sink->window_rect)) {
if (!gst_vaapisink_show_frame_glx(sink)) {
GST_DEBUG("could not render VA/GLX texture");
return GST_FLOW_UNEXPECTED;
}
@ -356,6 +475,9 @@ gst_vaapisink_set_property(
case PROP_SYNCHRONOUS:
sink->synchronous = g_value_get_boolean(value);
break;
case PROP_USE_REFLECTION:
sink->use_reflection = g_value_get_boolean(value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
break;
@ -385,6 +507,9 @@ gst_vaapisink_get_property(
case PROP_SYNCHRONOUS:
g_value_set_boolean(value, sink->synchronous);
break;
case PROP_USE_REFLECTION:
g_value_set_boolean(value, sink->use_reflection);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
break;
@ -427,6 +552,15 @@ static void gst_vaapisink_class_init(GstVaapiSinkClass *klass)
"Enables GLX rendering",
TRUE,
G_PARAM_READWRITE));
g_object_class_install_property
(object_class,
PROP_USE_REFLECTION,
g_param_spec_boolean("use-reflection",
"Reflection effect",
"Enables OpenGL reflection effect",
FALSE,
G_PARAM_READWRITE));
#endif
g_object_class_install_property
@ -465,15 +599,16 @@ static void gst_vaapisink_class_init(GstVaapiSinkClass *klass)
static void gst_vaapisink_init(GstVaapiSink *sink, GstVaapiSinkClass *klass)
{
sink->display_name = NULL;
sink->display = NULL;
sink->window = NULL;
sink->texture = NULL;
sink->video_width = 0;
sink->video_height = 0;
sink->fullscreen = FALSE;
sink->synchronous = FALSE;
sink->use_glx = USE_VAAPISINK_GLX;
sink->display_name = NULL;
sink->display = NULL;
sink->window = NULL;
sink->texture = NULL;
sink->video_width = 0;
sink->video_height = 0;
sink->fullscreen = FALSE;
sink->synchronous = FALSE;
sink->use_glx = USE_VAAPISINK_GLX;
sink->use_reflection = FALSE;
}
GstVaapiDisplay *

1
sys/vaapisink/gstvaapisink.h
View file

@ -76,6 +76,7 @@ struct _GstVaapiSink {
guint fullscreen : 1;
guint synchronous : 1;
guint use_glx : 1;
guint use_reflection : 1;
};
struct _GstVaapiSinkClass {