enum
{
- PROP_0,
- PROP_CLIENT_RESHAPE_CALLBACK,
- PROP_CLIENT_DRAW_CALLBACK,
- PROP_CLIENT_DATA
+ SIGNAL_0,
+ CLIENT_DRAW_SIGNAL,
+ LAST_SIGNAL
};
+static guint gst_gl_filter_app_signals[LAST_SIGNAL] = { 0 };
+
#define DEBUG_INIT \
GST_DEBUG_CATEGORY_INIT (gst_gl_filter_app_debug, "glfilterapp", 0, "glfilterapp element");
GST_GL_FILTER_CLASS (klass)->filter_texture =
gst_gl_filter_app_filter_texture;
- g_object_class_install_property (gobject_class, PROP_CLIENT_RESHAPE_CALLBACK,
- g_param_spec_pointer ("client-reshape-callback",
- "Client reshape callback",
- "Define a custom reshape callback in a client code",
- G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS));
-
- g_object_class_install_property (gobject_class, PROP_CLIENT_DRAW_CALLBACK,
- g_param_spec_pointer ("client-draw-callback", "Client draw callback",
- "Define a custom draw callback in a client code",
- G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS));
-
- g_object_class_install_property (gobject_class, PROP_CLIENT_DATA,
- g_param_spec_pointer ("client-data", "Client data",
- "Pass data to the draw and reshape callbacks",
- G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS));
+ /**
+ * GstGLFilterApp::client-draw:
+ * @object: the #GstGLImageSink
+ * @texture: the #guint id of the texture.
+ * @width: the #guint width of the texture.
+ * @height: the #guint height of the texture.
+ *
+ * Will be emitted before to draw the texture. The client should
+ * redraw the surface/contents with the @texture, @width and @height.
+ */
+ gst_gl_filter_app_signals[CLIENT_DRAW_SIGNAL] =
+ g_signal_new ("client-draw", G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST, 0, NULL, NULL, g_cclosure_marshal_generic,
+ G_TYPE_NONE, 3, G_TYPE_UINT, G_TYPE_UINT, G_TYPE_UINT);
gst_element_class_set_metadata (element_class,
"OpenGL application filter", "Filter/Effect",
static void
gst_gl_filter_app_init (GstGLFilterApp * filter)
{
- filter->clientReshapeCallback = NULL;
- filter->clientDrawCallback = NULL;
- filter->client_data = NULL;
}
static void
gst_gl_filter_app_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
- GstGLFilterApp *filter = GST_GL_FILTER_APP (object);
-
switch (prop_id) {
- case PROP_CLIENT_RESHAPE_CALLBACK:
- {
- filter->clientReshapeCallback = g_value_get_pointer (value);
- break;
- }
- case PROP_CLIENT_DRAW_CALLBACK:
- {
- filter->clientDrawCallback = g_value_get_pointer (value);
- break;
- }
- case PROP_CLIENT_DATA:
- {
- filter->client_data = g_value_get_pointer (value);
- break;
- }
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
gst_gl_filter_app_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
- //GstGLFilterApp* filter = GST_GL_FILTER_APP (object);
-
switch (prop_id) {
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
return TRUE;
}
+static void
+_emit_draw_signal (guint tex, gint width, gint height, gpointer data)
+{
+ GstGLFilter *filter = data;
+
+ g_signal_emit (filter, gst_gl_filter_app_signals[CLIENT_DRAW_SIGNAL], 0,
+ tex, width, height);
+}
+
static gboolean
gst_gl_filter_app_filter_texture (GstGLFilter * filter, guint in_tex,
guint out_tex)
gst_gl_context_use_fbo (filter->context,
GST_VIDEO_INFO_WIDTH (&filter->out_info),
GST_VIDEO_INFO_HEIGHT (&filter->out_info),
- filter->fbo, filter->depthbuffer, out_tex,
- app_filter->clientDrawCallback,
+ filter->fbo, filter->depthbuffer, out_tex, (GLCB) _emit_draw_signal,
GST_VIDEO_INFO_WIDTH (&filter->in_info),
GST_VIDEO_INFO_HEIGHT (&filter->in_info),
in_tex, 45,
(gfloat) GST_VIDEO_INFO_WIDTH (&filter->out_info) /
(gfloat) GST_VIDEO_INFO_HEIGHT (&filter->out_info),
- 0.1, 100, GST_GL_DISPLAY_PROJECTION_PERSPECTIVE,
- app_filter->client_data);
+ 0.1, 100, GST_GL_DISPLAY_PROJECTION_PERSPECTIVE, filter);
}
//default
else {
return TRUE;
}
-//client reshape callback
-static void reshapeCallback (GLuint width, GLuint height)
-{
- glViewport(0, 0, width, height);
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- gluPerspective(45, (gfloat)width/(gfloat)height, 0.1, 100);
- glMatrixMode(GL_MODELVIEW);
-}
-
-
//client draw callback
-static gboolean drawCallback (GLuint width, GLuint height, GLuint texture, gpointer data)
+static gboolean drawCallback (void *filter, GLuint width, GLuint height, GLuint texture, gpointer data)
{
static GLfloat xrot = 0;
static GLfloat yrot = 0;
/* configure elements */
g_object_set(G_OBJECT(videosrc), "num-buffers", 400, NULL);
- g_object_set(G_OBJECT(glfilterapp), "client-reshape-callback", reshapeCallback, NULL);
- g_object_set(G_OBJECT(glfilterapp), "client-draw-callback", drawCallback, NULL);
- g_object_set(G_OBJECT(glfilterapp), "client-data", NULL, NULL);
+ g_signal_connect(G_OBJECT(glfilterapp), "client-draw", G_CALLBACK (drawCallback), NULL);
g_object_set(G_OBJECT(filesink), "location", "record.avi", NULL);
/* add elements */