/**
* gst_gl_context_create:
* @context: a #GstGLContext:
* @other_context: (allow-none): a #GstGLContext to share OpenGL objects with
* @error: (allow-none): a #GError
*
* Creates an OpenGL context in the current thread with the specified
* @other_context as a context to share shareable OpenGL objects with. See the
* OpenGL specification for what is shared between contexts.
*
* If an error occurs, and @error is not %NULL, then error will contain details
* of the error and %FALSE will be returned.
*
* Should only be called once.
*
* Returns: whether the context could successfully be created
*/
gboolean
gst_gl_context_create (GstGLContext * context,
GstGLContext * other_context, GError ** error)
{
gboolean alive = FALSE;
g_return_val_if_fail (GST_GL_IS_CONTEXT (context), FALSE);
g_return_val_if_fail (!GST_GL_IS_WRAPPED_CONTEXT (context), FALSE);
_ensure_window (context);
g_mutex_lock (&context->priv->render_lock);
if (!context->priv->created) {
context->priv->other_context = other_context;
context->priv->error = error;
context->priv->gl_thread = g_thread_new ("gstglcontext",
(GThreadFunc) gst_gl_context_create_thread, context);
g_cond_wait (&context->priv->create_cond, &context->priv->render_lock);
context->priv->created = TRUE;
GST_INFO ("gl thread created");
}
alive = context->priv->alive;
g_mutex_unlock (&context->priv->render_lock);
return alive;
}
/**
* gst_gl_context_get_window:
* @context: a #GstGLContext
*
* Returns: the currently set window
*/
GstGLWindow *
gst_gl_context_get_window (GstGLContext * context)
{
g_return_val_if_fail (GST_GL_IS_CONTEXT (context), NULL);
if (GST_GL_IS_WRAPPED_CONTEXT (context))
return NULL;
_ensure_window (context);
return gst_object_ref (context->window);
}
/**
* gst_gl_context_get_window:
* @context: a #GstGLContext
*
* Returns: the currently set window
*
* Since: 1.4
*/
GstGLWindow *
gst_gl_context_get_window (GstGLContext * context)
{
g_return_val_if_fail (GST_IS_GL_CONTEXT (context), NULL);
if (GST_IS_GL_WRAPPED_CONTEXT (context)) {
GST_WARNING_OBJECT (context, "context is not toplevel, returning NULL");
return NULL;
}
_ensure_window (context);
return gst_object_ref (context->window);
}
/**
* gst_gl_context_create:
* @context: a #GstGLContext:
* @other_context: (allow-none): a #GstGLContext to share OpenGL objects with
* @error: (allow-none): a #GError
*
* Creates an OpenGL context in the current thread with the specified
* @other_context as a context to share shareable OpenGL objects with. See the
* OpenGL specification for what is shared between contexts.
*
* If an error occurs, and @error is not %NULL, then error will contain details
* of the error and %FALSE will be returned.
*
* Should only be called once.
*
* Returns: whether the context could successfully be created
*
* Since: 1.4
*/
gboolean
gst_gl_context_create (GstGLContext * context,
GstGLContext * other_context, GError ** error)
{
gboolean alive = FALSE;
g_return_val_if_fail (GST_IS_GL_CONTEXT (context), FALSE);
g_return_val_if_fail (!GST_IS_GL_WRAPPED_CONTEXT (context), FALSE);
GST_DEBUG_OBJECT (context, " other_context:%" GST_PTR_FORMAT, other_context);
_ensure_window (context);
g_mutex_lock (&context->priv->render_lock);
if (!context->priv->created) {
g_weak_ref_set (&context->priv->other_context_ref, other_context);
context->priv->error = error;
if (other_context == NULL)
context->priv->sharegroup_id = _new_sharegroup_id ();
else
context->priv->sharegroup_id = other_context->priv->sharegroup_id;
context->priv->gl_thread = g_thread_new ("gstglcontext",
(GThreadFunc) gst_gl_context_create_thread, context);
g_cond_wait (&context->priv->create_cond, &context->priv->render_lock);
context->priv->created = TRUE;
GST_INFO_OBJECT (context, "gl thread created");
}
alive = context->priv->alive;
g_mutex_unlock (&context->priv->render_lock);
return alive;
}