GstGLAPI
gst_gl_display_get_gl_api_unlocked (GstGLDisplay * display)
{
g_return_val_if_fail (GST_IS_GL_DISPLAY (display), GST_GL_API_NONE);
return display->priv->gl_api;
}
/**
* gst_gl_display_get_handle_type:
* @display: a #GstGLDisplay
*
* Returns: the #GstGLDisplayType of @display
*
* Since: 1.4
*/
GstGLDisplayType
gst_gl_display_get_handle_type (GstGLDisplay * display)
{
g_return_val_if_fail (GST_IS_GL_DISPLAY (display), GST_GL_DISPLAY_TYPE_NONE);
return display->type;
}
guintptr
gst_gl_display_get_handle (GstGLDisplay * display)
{
GstGLDisplayClass *klass;
g_return_val_if_fail (GST_IS_GL_DISPLAY (display), 0);
klass = GST_GL_DISPLAY_GET_CLASS (display);
g_return_val_if_fail (klass->get_handle != NULL, 0);
return klass->get_handle (display);
}
/**
* gst_gl_display_get_gl_api:
* @display: a #GstGLDisplay
*
* see gst_gl_display_filter_gl_api() for what the returned value represents
*
* Returns: the #GstGLAPI configured for @display
*/
GstGLAPI
gst_gl_display_get_gl_api (GstGLDisplay * display)
{
GstGLAPI ret;
g_return_val_if_fail (GST_IS_GL_DISPLAY (display), GST_GL_API_NONE);
GST_OBJECT_LOCK (display);
ret = display->priv->gl_api;
GST_OBJECT_UNLOCK (display);
return ret;
}
/**
* gst_gl_display_get_gl_context_for_thread:
* @display: a #GstGLDisplay
* @thread: a #GThread
*
* Returns: (transfer full): the #GstGLContext current on @thread or %NULL
*
* Must be called with the object lock held.
*
* Since: 1.6
*/
GstGLContext *
gst_gl_display_get_gl_context_for_thread (GstGLDisplay * display,
GThread * thread)
{
GstGLContext *context;
g_return_val_if_fail (GST_IS_GL_DISPLAY (display), NULL);
context = _get_gl_context_for_thread_unlocked (display, thread);
GST_DEBUG_OBJECT (display, "returning context %" GST_PTR_FORMAT " for thread "
"%p", context, thread);
return context;
}
/**
* gst_gl_display_egl_from_gl_display:
* @display: an existing #GstGLDisplay
*
* Creates a EGL display connection from a native Display.
*
* This function will return the same value for multiple calls with the same
* @display.
*
* Returns: (transfer full): a new #GstGLDisplayEGL
*
* Since: 1.12
*/
GstGLDisplayEGL *
gst_gl_display_egl_from_gl_display (GstGLDisplay * display)
{
GstGLDisplayEGL *ret;
GstGLDisplayType display_type;
guintptr native_display;
g_return_val_if_fail (GST_IS_GL_DISPLAY (display), NULL);
GST_DEBUG_CATEGORY_GET (gst_gl_display_debug, "gldisplay");
if (GST_IS_GL_DISPLAY_EGL (display)) {
GST_LOG_OBJECT (display, "display %" GST_PTR_FORMAT "is already a "
"GstGLDisplayEGL", display);
return gst_object_ref (display);
}
/* try to get a previously set GstGLDisplayEGL */
ret = g_object_dup_data (G_OBJECT (display), GST_GL_DISPLAY_EGL_NAME,
(GDuplicateFunc) _ref_if_set, NULL);
if (ret && GST_IS_GL_DISPLAY_EGL (ret)) {
GST_LOG_OBJECT (display, "display %" GST_PTR_FORMAT "already has a "
"GstGLDisplayEGL %" GST_PTR_FORMAT, display, ret);
return ret;
}
if (ret)
gst_object_unref (ret);
display_type = gst_gl_display_get_handle_type (display);
native_display = gst_gl_display_get_handle (display);
g_return_val_if_fail (native_display != 0, NULL);
g_return_val_if_fail (display_type != GST_GL_DISPLAY_TYPE_NONE, NULL);
ret = g_object_new (GST_TYPE_GL_DISPLAY_EGL, NULL);
ret->display =
gst_gl_display_egl_get_from_native (display_type, native_display);
if (!ret->display) {
GST_WARNING_OBJECT (ret, "failed to get EGLDisplay from native display");
gst_object_unref (ret);
return NULL;
}
g_object_set_data_full (G_OBJECT (display), GST_GL_DISPLAY_EGL_NAME,
gst_object_ref (ret), (GDestroyNotify) gst_object_unref);
return ret;
}
/**
* gst_gl_display_filter_gl_api:
* @display: a #GstGLDisplay
* @gl_api: a #GstGLAPI to filter with
*
* limit the use of OpenGL to the requested @gl_api. This is intended to allow
* application and elements to request a specific set of OpenGL API's based on
* what they support. See gst_gl_context_get_gl_api() for the retreiving the
* API supported by a #GstGLContext.
*/
void
gst_gl_display_filter_gl_api (GstGLDisplay * display, GstGLAPI gl_api)
{
gchar *gl_api_s;
g_return_if_fail (GST_IS_GL_DISPLAY (display));
gl_api_s = gst_gl_api_to_string (gl_api);
GST_TRACE_OBJECT (display, "filtering with api %s", gl_api_s);
g_free (gl_api_s);
GST_OBJECT_LOCK (display);
display->priv->gl_api &= gl_api;
GST_OBJECT_UNLOCK (display);
}
/**
* gst_gl_display_add_context:
* @display: a #GstGLDisplay
* @context: (transfer none): a #GstGLContext
*
* Returns: whether @context was successfully added. %FALSE may be returned
* if there already exists another context for @context's active thread.
*
* Must be called with the object lock held.
*
* Since: 1.6
*/
gboolean
gst_gl_display_add_context (GstGLDisplay * display, GstGLContext * context)
{
GstGLContext *collision = NULL;
GstGLDisplay *context_display;
gboolean ret = TRUE;
GThread *thread;
GWeakRef *ref;
g_return_val_if_fail (GST_IS_GL_DISPLAY (display), FALSE);
g_return_val_if_fail (GST_IS_GL_CONTEXT (context), FALSE);
context_display = gst_gl_context_get_display (context);
g_assert (context_display == display);
gst_object_unref (context_display);
thread = gst_gl_context_get_thread (context);
if (thread) {
collision = _get_gl_context_for_thread_unlocked (display, thread);
g_thread_unref (thread);
/* adding the same context is a no-op */
if (context == collision) {
ret = TRUE;
goto out;
}
if (_check_collision (context, collision)) {
ret = FALSE;
goto out;
}
}
ref = g_new0 (GWeakRef, 1);
g_weak_ref_init (ref, context);
display->priv->contexts = g_list_prepend (display->priv->contexts, ref);
out:
if (collision)
gst_object_unref (collision);
GST_DEBUG_OBJECT (display, "%ssuccessfully inserted context %" GST_PTR_FORMAT,
ret ? "" : "un", context);
return ret;
}
/**
* gst_gl_handle_context_query:
* @element: a #GstElement
* @query: a #GstQuery of type %GST_QUERY_CONTEXT
* @display: (transfer none) (nullable): a #GstGLDisplay
* @context: (transfer none) (nullable): a #GstGLContext
* @other_context: (transfer none) (nullable): application provided #GstGLContext
*
* Returns: Whether the @query was successfully responded to from the passed
* @display, @context, and @other_context.
*/
gboolean
gst_gl_handle_context_query (GstElement * element, GstQuery * query,
GstGLDisplay * display, GstGLContext * gl_context,
GstGLContext * other_context)
{
const gchar *context_type;
GstContext *context, *old_context;
g_return_val_if_fail (GST_IS_ELEMENT (element), FALSE);
g_return_val_if_fail (GST_IS_QUERY (query), FALSE);
g_return_val_if_fail (display == NULL || GST_IS_GL_DISPLAY (display), FALSE);
g_return_val_if_fail (gl_context == NULL
|| GST_IS_GL_CONTEXT (gl_context), FALSE);
g_return_val_if_fail (other_context == NULL
|| GST_IS_GL_CONTEXT (other_context), FALSE);
GST_LOG_OBJECT (element, "handle context query %" GST_PTR_FORMAT, query);
gst_query_parse_context_type (query, &context_type);
if (display && g_strcmp0 (context_type, GST_GL_DISPLAY_CONTEXT_TYPE) == 0) {
gst_query_parse_context (query, &old_context);
if (old_context)
context = gst_context_copy (old_context);
else
context = gst_context_new (GST_GL_DISPLAY_CONTEXT_TYPE, TRUE);
gst_context_set_gl_display (context, display);
gst_query_set_context (query, context);
gst_context_unref (context);
GST_DEBUG_OBJECT (element, "successfully set %" GST_PTR_FORMAT
" on %" GST_PTR_FORMAT, display, query);
return TRUE;
}
#if GST_GL_HAVE_WINDOW_X11
else if (display && g_strcmp0 (context_type, "gst.x11.display.handle") == 0) {
GstStructure *s;
gst_query_parse_context (query, &old_context);
if (old_context)
context = gst_context_copy (old_context);
else
context = gst_context_new ("gst.x11.display.handle", TRUE);
if (gst_gl_display_get_handle_type (display) & GST_GL_DISPLAY_TYPE_X11) {
Display *x11_display = (Display *) gst_gl_display_get_handle (display);
if (x11_display) {
s = gst_context_writable_structure (context);
gst_structure_set (s, "display", G_TYPE_POINTER, x11_display, NULL);
gst_query_set_context (query, context);
gst_context_unref (context);
GST_DEBUG_OBJECT (element, "successfully set x11 display %p (from %"
GST_PTR_FORMAT ") on %" GST_PTR_FORMAT, x11_display, display,
query);
return TRUE;
}
}
}
#endif
#if GST_GL_HAVE_WINDOW_WAYLAND
else if (display
&& g_strcmp0 (context_type, "GstWaylandDisplayHandleContextType") == 0) {
GstStructure *s;
gst_query_parse_context (query, &old_context);
if (old_context)
context = gst_context_copy (old_context);
else
context = gst_context_new ("GstWaylandDisplayHandleContextType", TRUE);
if (gst_gl_display_get_handle_type (display) & GST_GL_DISPLAY_TYPE_WAYLAND) {
struct wl_display *wayland_display =
(struct wl_display *) gst_gl_display_get_handle (display);
if (wayland_display) {
s = gst_context_writable_structure (context);
gst_structure_set (s, "display", G_TYPE_POINTER, wayland_display, NULL);
gst_query_set_context (query, context);
gst_context_unref (context);
GST_DEBUG_OBJECT (element, "successfully set wayland display %p (from %"
GST_PTR_FORMAT ") on %" GST_PTR_FORMAT, wayland_display, display,
query);
return TRUE;
}
}
}
#endif
else if (other_context && g_strcmp0 (context_type, "gst.gl.app_context") == 0) {
GstStructure *s;
gst_query_parse_context (query, &old_context);
if (old_context)
context = gst_context_copy (old_context);
else
context = gst_context_new ("gst.gl.app_context", TRUE);
s = gst_context_writable_structure (context);
gst_structure_set (s, "context", GST_TYPE_GL_CONTEXT, other_context, NULL);
gst_query_set_context (query, context);
gst_context_unref (context);
GST_DEBUG_OBJECT (element, "successfully set application GL context %"
GST_PTR_FORMAT " on %" GST_PTR_FORMAT, other_context, query);
return TRUE;
} else if (gl_context
&& g_strcmp0 (context_type, "gst.gl.local_context") == 0) {
GstStructure *s;
gst_query_parse_context (query, &old_context);
if (old_context)
context = gst_context_copy (old_context);
else
context = gst_context_new ("gst.gl.local_context", TRUE);
s = gst_context_writable_structure (context);
gst_structure_set (s, "context", GST_TYPE_GL_CONTEXT, gl_context, NULL);
gst_query_set_context (query, context);
gst_context_unref (context);
GST_DEBUG_OBJECT (element, "successfully set GL context %"
GST_PTR_FORMAT " on %" GST_PTR_FORMAT, gl_context, query);
return TRUE;
}
return FALSE;
}
