mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-09-09 05:38:58 +00:00
300 lines
8.7 KiB
C
300 lines
8.7 KiB
C
/*
|
|
* GStreamer
|
|
* Copyright (C) 2015 Matthew Waters <matthew@centricular.com>
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Library General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Library General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Library General Public
|
|
* License along with this library; if not, write to the
|
|
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include "gstglelements.h"
|
|
#include "gstglfilterbin.h"
|
|
|
|
#define GST_CAT_DEFAULT gst_gl_filter_bin_debug
|
|
GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
|
|
|
|
/* Properties */
|
|
enum
|
|
{
|
|
PROP_0,
|
|
PROP_FILTER,
|
|
};
|
|
|
|
enum
|
|
{
|
|
SIGNAL_0,
|
|
SIGNAL_CREATE_ELEMENT,
|
|
LAST_SIGNAL
|
|
};
|
|
|
|
static guint gst_gl_filter_bin_signals[LAST_SIGNAL] = { 0 };
|
|
|
|
#define gst_gl_filter_bin_parent_class parent_class
|
|
G_DEFINE_TYPE_WITH_CODE (GstGLFilterBin, gst_gl_filter_bin,
|
|
GST_TYPE_BIN, GST_DEBUG_CATEGORY_INIT (gst_gl_filter_bin_debug,
|
|
"glfilterbin", 0, "glfilterbin element"););
|
|
GST_ELEMENT_REGISTER_DEFINE_WITH_CODE (glfilterbin, "glfilterbin",
|
|
GST_RANK_NONE, GST_TYPE_GL_FILTER_BIN, gl_element_init (plugin));
|
|
|
|
static void gst_gl_filter_bin_finalize (GObject * object);
|
|
static void gst_gl_filter_bin_get_property (GObject * object, guint prop_id,
|
|
GValue * value, GParamSpec * pspec);
|
|
static void gst_gl_filter_bin_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec);
|
|
|
|
static GstStateChangeReturn gst_gl_filter_bin_change_state (GstElement *
|
|
element, GstStateChange transition);
|
|
|
|
static GstStaticPadTemplate _src_pad_template = GST_STATIC_PAD_TEMPLATE ("src",
|
|
GST_PAD_SRC,
|
|
GST_PAD_ALWAYS,
|
|
GST_STATIC_CAPS ("video/x-raw(ANY)"));
|
|
|
|
static void
|
|
gst_gl_filter_bin_class_init (GstGLFilterBinClass * klass)
|
|
{
|
|
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
|
|
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
|
|
GstCaps *upload_caps;
|
|
|
|
element_class->change_state = gst_gl_filter_bin_change_state;
|
|
|
|
gobject_class->set_property = gst_gl_filter_bin_set_property;
|
|
gobject_class->get_property = gst_gl_filter_bin_get_property;
|
|
gobject_class->finalize = gst_gl_filter_bin_finalize;
|
|
|
|
gst_element_class_add_static_pad_template (element_class, &_src_pad_template);
|
|
|
|
upload_caps = gst_gl_upload_get_input_template_caps ();
|
|
gst_element_class_add_pad_template (element_class,
|
|
gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, upload_caps));
|
|
gst_caps_unref (upload_caps);
|
|
|
|
g_object_class_install_property (gobject_class, PROP_FILTER,
|
|
g_param_spec_object ("filter",
|
|
"GL filter element",
|
|
"The GL filter chain to use",
|
|
GST_TYPE_ELEMENT,
|
|
GST_PARAM_MUTABLE_READY | G_PARAM_READWRITE |
|
|
G_PARAM_STATIC_STRINGS));
|
|
|
|
/**
|
|
* GstFilterBin::create-element:
|
|
* @object: the #GstGLFilterBin
|
|
*
|
|
* Will be emitted when we need the processing element/s that this bin will use
|
|
*
|
|
* Returns: a new #GstElement
|
|
*/
|
|
gst_gl_filter_bin_signals[SIGNAL_CREATE_ELEMENT] =
|
|
g_signal_new ("create-element", G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_LAST, 0, NULL, NULL, NULL, GST_TYPE_ELEMENT, 0);
|
|
|
|
gst_element_class_set_metadata (element_class,
|
|
"GL Filter Bin", "Filter/Video",
|
|
"Infrastructure to process GL textures",
|
|
"Matthew Waters <matthew@centricular.com>");
|
|
}
|
|
|
|
static void
|
|
gst_gl_filter_bin_init (GstGLFilterBin * self)
|
|
{
|
|
GstPad *pad;
|
|
|
|
self->upload = gst_element_factory_make ("glupload", NULL);
|
|
self->in_convert = gst_element_factory_make ("glcolorconvert", NULL);
|
|
self->out_convert = gst_element_factory_make ("glcolorconvert", NULL);
|
|
self->download = gst_element_factory_make ("gldownload", NULL);
|
|
|
|
gst_bin_add (GST_BIN (self), self->upload);
|
|
gst_bin_add (GST_BIN (self), self->in_convert);
|
|
gst_bin_add (GST_BIN (self), self->out_convert);
|
|
gst_bin_add (GST_BIN (self), self->download);
|
|
|
|
gst_element_link_pads (self->upload, "src", self->in_convert, "sink");
|
|
gst_element_link_pads (self->out_convert, "src", self->download, "sink");
|
|
|
|
pad = gst_element_get_static_pad (self->download, "src");
|
|
if (pad) {
|
|
GST_DEBUG_OBJECT (self, "setting target src pad %" GST_PTR_FORMAT, pad);
|
|
self->srcpad = gst_ghost_pad_new ("src", pad);
|
|
gst_element_add_pad (GST_ELEMENT_CAST (self), self->srcpad);
|
|
gst_object_unref (pad);
|
|
}
|
|
|
|
pad = gst_element_get_static_pad (self->upload, "sink");
|
|
if (pad) {
|
|
GST_DEBUG_OBJECT (self, "setting target sink pad %" GST_PTR_FORMAT, pad);
|
|
self->sinkpad = gst_ghost_pad_new ("sink", pad);
|
|
gst_element_add_pad (GST_ELEMENT_CAST (self), self->sinkpad);
|
|
gst_object_unref (pad);
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_gl_filter_bin_finalize (GObject * object)
|
|
{
|
|
GstGLFilterBin *self = GST_GL_FILTER_BIN (object);
|
|
|
|
if (self->filter)
|
|
gst_object_unref (self->filter);
|
|
|
|
G_OBJECT_CLASS (parent_class)->finalize (object);
|
|
}
|
|
|
|
static gboolean
|
|
_connect_filter_element (GstGLFilterBin * self)
|
|
{
|
|
gboolean res = TRUE;
|
|
|
|
gst_object_set_name (GST_OBJECT (self->filter), "filter");
|
|
res &= gst_bin_add (GST_BIN (self), self->filter);
|
|
|
|
res &= gst_element_link_pads (self->in_convert, "src", self->filter, "sink");
|
|
res &= gst_element_link_pads (self->filter, "src", self->out_convert, "sink");
|
|
|
|
if (!res)
|
|
GST_ERROR_OBJECT (self, "Failed to link filter element into the pipeline");
|
|
|
|
return res;
|
|
}
|
|
|
|
/*
|
|
* @filter: (transfer floating):
|
|
*/
|
|
static gboolean
|
|
gst_gl_filter_bin_set_filter (GstGLFilterBin * self, GstElement * filter)
|
|
{
|
|
g_return_val_if_fail (GST_IS_ELEMENT (filter), FALSE);
|
|
|
|
if (self->filter) {
|
|
gst_element_set_locked_state (self->filter, TRUE);
|
|
gst_bin_remove (GST_BIN (self), self->filter);
|
|
gst_element_set_state (self->filter, GST_STATE_NULL);
|
|
gst_object_unref (self->filter);
|
|
self->filter = NULL;
|
|
}
|
|
self->filter = filter;
|
|
|
|
gst_object_ref_sink (filter);
|
|
|
|
if (filter && !_connect_filter_element (self)) {
|
|
gst_object_unref (self->filter);
|
|
self->filter = NULL;
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
void
|
|
gst_gl_filter_bin_finish_init_with_element (GstGLFilterBin * self,
|
|
GstElement * element)
|
|
{
|
|
gst_gl_filter_bin_set_filter (self, element);
|
|
}
|
|
|
|
void
|
|
gst_gl_filter_bin_finish_init (GstGLFilterBin * self)
|
|
{
|
|
GstGLFilterBinClass *klass = GST_GL_FILTER_BIN_GET_CLASS (self);
|
|
GstElement *element = NULL;
|
|
|
|
if (klass->create_element)
|
|
element = klass->create_element ();
|
|
|
|
if (element)
|
|
gst_gl_filter_bin_finish_init_with_element (self, element);
|
|
}
|
|
|
|
static void
|
|
gst_gl_filter_bin_get_property (GObject * object, guint prop_id,
|
|
GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstGLFilterBin *self = GST_GL_FILTER_BIN (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_FILTER:
|
|
g_value_set_object (value, self->filter);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_gl_filter_bin_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstGLFilterBin *self = GST_GL_FILTER_BIN (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_FILTER:
|
|
gst_gl_filter_bin_set_filter (self, g_value_get_object (value));
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static GstStateChangeReturn
|
|
gst_gl_filter_bin_change_state (GstElement * element, GstStateChange transition)
|
|
{
|
|
GstGLFilterBin *self = GST_GL_FILTER_BIN (element);
|
|
GstGLFilterBinClass *klass = GST_GL_FILTER_BIN_GET_CLASS (self);
|
|
GstStateChangeReturn ret;
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_NULL_TO_READY:
|
|
if (!self->filter) {
|
|
if (klass->create_element)
|
|
self->filter = klass->create_element ();
|
|
|
|
if (!self->filter) {
|
|
g_signal_emit (element,
|
|
gst_gl_filter_bin_signals[SIGNAL_CREATE_ELEMENT], 0,
|
|
&self->filter);
|
|
if (self->filter && g_object_is_floating (self->filter))
|
|
gst_object_ref_sink (self->filter);
|
|
}
|
|
|
|
if (!self->filter) {
|
|
GST_ERROR_OBJECT (element, "Failed to retrieve element");
|
|
return GST_STATE_CHANGE_FAILURE;
|
|
}
|
|
if (!_connect_filter_element (self))
|
|
return GST_STATE_CHANGE_FAILURE;
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
|
if (ret == GST_STATE_CHANGE_FAILURE)
|
|
return ret;
|
|
|
|
switch (transition) {
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|