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gl: new glsinkbin element

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similar to glfilterbin but for sinks
This commit is contained in:
Matthew Waters 2015-02-19 18:23:37 +11:00 committed by Tim-Philipp Müller
parent 3e608bcce7
commit 1412e9c764
4 changed files with 484 additions and 0 deletions
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2
ext/gl/Makefile.am
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@ -7,6 +7,7 @@ libgstopengl_la_SOURCES = \
gstgldownloadelement.c \
gstglcolorconvertelement.c \
gstglfilterbin.c \
gstglsinkbin.c \
gstglimagesink.c \
gstglfiltercube.c \
gstgleffects.c \
@ -26,6 +27,7 @@ noinst_HEADERS = \
gstgldownloadelement.h \
gstglcolorconvertelement.h \
gstglfilterbin.h \
gstglsinkbin.h \
gstglimagesink.h \
gstglfiltercube.h \
gstgleffects.h \

401
ext/gl/gstglsinkbin.c Normal file
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@ -0,0 +1,401 @@
/*
* 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 <gst/video/videooverlay.h>
#include <gst/video/navigation.h>
#include "gstglsinkbin.h"
GST_DEBUG_CATEGORY (gst_debug_gl_sink_bin);
#define GST_CAT_DEFAULT gst_debug_gl_sink_bin
static void gst_gl_sink_bin_finalize (GObject * object);
static void gst_gl_sink_bin_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * param_spec);
static void gst_gl_sink_bin_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * param_spec);
static GstStateChangeReturn gst_gl_sink_bin_change_state (GstElement * element,
GstStateChange transition);
static void gst_gl_sink_bin_video_overlay_init (gpointer g_iface,
gpointer g_iface_data);
static void gst_gl_sink_bin_navigation_interface_init (gpointer g_iface,
gpointer g_iface_data);
static GstStaticPadTemplate gst_gl_sink_bin_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/x-raw(ANY)"));
enum
{
PROP_0,
PROP_FORCE_ASPECT_RATIO,
PROP_SINK,
};
enum
{
SIGNAL_0,
SIGNAL_CREATE_ELEMENT,
SIGNAL_LAST,
};
static guint gst_gl_sink_bin_signals[SIGNAL_LAST] = { 0, };
#define gst_gl_sink_bin_parent_class parent_class
G_DEFINE_TYPE_WITH_CODE (GstGLSinkBin, gst_gl_sink_bin,
GST_TYPE_BIN, G_IMPLEMENT_INTERFACE (GST_TYPE_VIDEO_OVERLAY,
gst_gl_sink_bin_video_overlay_init);
G_IMPLEMENT_INTERFACE (GST_TYPE_NAVIGATION,
gst_gl_sink_bin_navigation_interface_init);
GST_DEBUG_CATEGORY_INIT (gst_debug_gl_sink_bin, "glimagesink", 0,
"OpenGL Video Sink Bin"));
static void
gst_gl_sink_bin_class_init (GstGLSinkBinClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *element_class;
gobject_class = (GObjectClass *) klass;
element_class = GST_ELEMENT_CLASS (klass);
element_class->change_state = gst_gl_sink_bin_change_state;
gobject_class->set_property = gst_gl_sink_bin_set_property;
gobject_class->get_property = gst_gl_sink_bin_get_property;
gobject_class->finalize = gst_gl_sink_bin_finalize;
g_object_class_install_property (gobject_class, PROP_FORCE_ASPECT_RATIO,
g_param_spec_boolean ("force-aspect-ratio",
"Force aspect ratio",
"When enabled, scaling will respect original aspect ratio", TRUE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_SINK,
g_param_spec_object ("sink",
"GL sink element",
"The GL sink chain to use",
GST_TYPE_ELEMENT,
GST_PARAM_MUTABLE_READY | G_PARAM_READWRITE |
G_PARAM_STATIC_STRINGS));
/**
* GstGLSinkBin::create-element:
* @object: the #GstGLSinkBin
*
* Will be emitted when we need the processing element/s that this bin will use
*
* Returns: a new #GstElement
*/
gst_gl_sink_bin_signals[SIGNAL_CREATE_ELEMENT] =
g_signal_new ("create-element", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, 0, NULL, NULL, g_cclosure_marshal_generic,
GST_TYPE_ELEMENT, 0);
gst_element_class_set_metadata (element_class,
"GL Sink Bin", "Sink/Video",
"Infrastructure to process GL textures",
"Matthew Waters <matthew@centricular.com>");
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_gl_sink_bin_template));
}
static void
gst_gl_sink_bin_finalize (GObject * object)
{
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gst_gl_sink_bin_init (GstGLSinkBin * self)
{
gboolean res = TRUE;
GstPad *pad;
self->upload = gst_element_factory_make ("glupload", NULL);
self->convert = gst_element_factory_make ("glcolorconvert", NULL);
res &= gst_bin_add (GST_BIN (self), self->upload);
res &= gst_bin_add (GST_BIN (self), self->convert);
res &= gst_element_link_pads (self->upload, "src", self->convert, "sink");
pad = gst_element_get_static_pad (self->upload, "sink");
if (!pad) {
res = FALSE;
} else {
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);
}
if (!res) {
GST_WARNING_OBJECT (self, "Failed to add/connect the necessary machinery");
}
}
static gboolean
_connect_sink_element (GstGLSinkBin * self)
{
gboolean res = TRUE;
gst_object_set_name (GST_OBJECT (self->sink), "sink");
res &= gst_bin_add (GST_BIN (self), self->sink);
res &= gst_element_link_pads (self->convert, "src", self->sink, "sink");
if (!res)
GST_ERROR_OBJECT (self, "Failed to link sink element into the pipeline");
return res;
}
void
gst_gl_sink_bin_finish_init_with_element (GstGLSinkBin * self,
GstElement * element)
{
g_return_if_fail (GST_IS_ELEMENT (element));
self->sink = element;
if (!_connect_sink_element (self)) {
gst_object_unref (self->sink);
self->sink = NULL;
}
}
void
gst_gl_sink_bin_finish_init (GstGLSinkBin * self)
{
GstGLSinkBinClass *klass = GST_GL_SINK_BIN_GET_CLASS (self);
GstElement *element = NULL;
if (klass->create_element)
element = klass->create_element ();
if (element)
gst_gl_sink_bin_finish_init_with_element (self, element);
}
static void
gst_gl_sink_bin_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstGLSinkBin *self = GST_GL_SINK_BIN (object);
switch (prop_id) {
case PROP_SINK:
{
GstElement *sink = g_value_get_object (value);
if (self->sink)
gst_bin_remove (GST_BIN (self), self->sink);
self->sink = sink;
if (sink)
_connect_sink_element (self);
break;
}
case PROP_FORCE_ASPECT_RATIO:
if (self->sink)
g_object_set_property (G_OBJECT (self->sink), pspec->name, value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_gl_sink_bin_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstGLSinkBin *self = GST_GL_SINK_BIN (object);
switch (prop_id) {
case PROP_SINK:
g_value_set_object (value, self->sink);
break;
case PROP_FORCE_ASPECT_RATIO:
if (self->sink)
g_object_get_property (G_OBJECT (self->sink), pspec->name, value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstStateChangeReturn
gst_gl_sink_bin_change_state (GstElement * element, GstStateChange transition)
{
GstGLSinkBin *self = GST_GL_SINK_BIN (element);
GstGLSinkBinClass *klass = GST_GL_SINK_BIN_GET_CLASS (self);
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
GST_DEBUG ("changing state: %s => %s",
gst_element_state_get_name (GST_STATE_TRANSITION_CURRENT (transition)),
gst_element_state_get_name (GST_STATE_TRANSITION_NEXT (transition)));
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
if (!self->sink) {
if (klass->create_element)
self->sink = klass->create_element ();
if (!self->sink)
g_signal_emit (element,
gst_gl_sink_bin_signals[SIGNAL_CREATE_ELEMENT], 0, &self->sink);
if (!self->sink) {
GST_ERROR_OBJECT (element, "Failed to retreive element");
return GST_STATE_CHANGE_FAILURE;
}
if (!_connect_sink_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;
}
static void
gst_gl_sink_bin_navigation_send_event (GstNavigation * navigation, GstStructure
* structure)
{
GstGLSinkBin *self = GST_GL_SINK_BIN (navigation);
GstElement *nav =
gst_bin_get_by_interface (GST_BIN (self), GST_TYPE_NAVIGATION);
if (nav) {
gst_navigation_send_event (GST_NAVIGATION (nav), structure);
structure = NULL;
gst_object_unref (nav);
} else {
GstEvent *event = gst_event_new_navigation (structure);
structure = NULL;
gst_element_send_event (GST_ELEMENT (self), event);
}
}
static void
gst_gl_sink_bin_navigation_interface_init (gpointer g_iface,
gpointer g_iface_data)
{
GstNavigationInterface *iface = (GstNavigationInterface *) g_iface;
iface->send_event = gst_gl_sink_bin_navigation_send_event;
}
static void
gst_gl_sink_bin_overlay_expose (GstVideoOverlay * overlay)
{
GstGLSinkBin *self = GST_GL_SINK_BIN (overlay);
GstVideoOverlay *overlay_element = NULL;
overlay_element =
GST_VIDEO_OVERLAY (gst_bin_get_by_interface (GST_BIN (self),
GST_TYPE_VIDEO_OVERLAY));
if (overlay_element) {
gst_video_overlay_expose (overlay_element);
gst_object_unref (overlay_element);
}
}
static void
gst_gl_sink_bin_overlay_handle_events (GstVideoOverlay * overlay,
gboolean handle_events)
{
GstGLSinkBin *self = GST_GL_SINK_BIN (overlay);
GstVideoOverlay *overlay_element = NULL;
overlay_element =
GST_VIDEO_OVERLAY (gst_bin_get_by_interface (GST_BIN (self),
GST_TYPE_VIDEO_OVERLAY));
if (overlay_element) {
gst_video_overlay_handle_events (overlay_element, handle_events);
gst_object_unref (overlay_element);
}
}
static void
gst_gl_sink_bin_overlay_set_render_rectangle (GstVideoOverlay * overlay, gint x,
gint y, gint width, gint height)
{
GstGLSinkBin *self = GST_GL_SINK_BIN (overlay);
GstVideoOverlay *overlay_element = NULL;
overlay_element =
GST_VIDEO_OVERLAY (gst_bin_get_by_interface (GST_BIN (self),
GST_TYPE_VIDEO_OVERLAY));
if (overlay_element) {
gst_video_overlay_set_render_rectangle (overlay_element, x, y, width,
height);
gst_object_unref (overlay_element);
}
}
static void
gst_gl_sink_bin_overlay_set_window_handle (GstVideoOverlay * overlay,
guintptr handle)
{
GstGLSinkBin *self = GST_GL_SINK_BIN (overlay);
GstVideoOverlay *overlay_element = NULL;
overlay_element =
GST_VIDEO_OVERLAY (gst_bin_get_by_interface (GST_BIN (self),
GST_TYPE_VIDEO_OVERLAY));
if (overlay_element) {
gst_video_overlay_set_window_handle (overlay_element, handle);
gst_object_unref (overlay_element);
}
}
static void
gst_gl_sink_bin_video_overlay_init (gpointer g_iface, gpointer g_iface_data)
{
GstVideoOverlayInterface *iface = (GstVideoOverlayInterface *) g_iface;
iface->expose = gst_gl_sink_bin_overlay_expose;
iface->handle_events = gst_gl_sink_bin_overlay_handle_events;
iface->set_render_rectangle = gst_gl_sink_bin_overlay_set_render_rectangle;
iface->set_window_handle = gst_gl_sink_bin_overlay_set_window_handle;
}

75
ext/gl/gstglsinkbin.h Normal file
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@ -0,0 +1,75 @@
/*
* GStreamer
* Copyright (C) 2003 Julien Moutte <julien@moutte.net>
* Copyright (C) 2005,2006,2007 David A. Schleef <ds@schleef.org>
* Copyright (C) 2008 Julien Isorce <julien.isorce@gmail.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.
*/
#ifndef _GST_GL_SINK_BIN_H_
#define _GST_GL_SINK_BIN_H_
#include <gst/gst.h>
#include <gst/video/gstvideosink.h>
#include <gst/video/video.h>
#include <gst/gl/gl.h>
G_BEGIN_DECLS
GType gst_gl_sink_bin_get_type(void);
#define GST_TYPE_GL_SINK_BIN \
(gst_gl_sink_bin_get_type())
#define GST_GL_SINK_BIN(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_GL_SINK_BIN,GstGLSinkBin))
#define GST_GL_SINK_BIN_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_GL_SINK_BIN,GstGLSinkBinClass))
#define GST_IS_GL_SINK_BIN(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_GL_SINK_BIN))
#define GST_IS_GL_SINK_BIN_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_GL_SINK_BIN))
#define GST_GL_SINK_BIN_GET_CLASS(obj) \
(G_TYPE_INSTANCE_GET_CLASS((obj) ,GST_TYPE_GL_SINK_BIN,GstGLSinkBinClass))
typedef struct _GstGLSinkBin GstGLSinkBin;
typedef struct _GstGLSinkBinClass GstGLSinkBinClass;
struct _GstGLSinkBin
{
GstBin parent;
GstPad *sinkpad;
GstElement *upload;
GstElement *convert;
GstElement *sink;
};
struct _GstGLSinkBinClass
{
GstBinClass parent_class;
GstElement * (*create_element) (void);
};
void gst_gl_sink_bin_finish_init (GstGLSinkBin * self);
void gst_gl_sink_bin_finish_init_with_element (GstGLSinkBin * self,
GstElement * element);
G_END_DECLS
#endif

6
ext/gl/gstopengl.c
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@ -48,6 +48,7 @@
#include "gstgldownloadelement.h"
#include "gstglcolorconvertelement.h"
#include "gstglfilterbin.h"
#include "gstglsinkbin.h"
#include "gstglfiltercube.h"
#include "gstgleffects.h"
@ -136,6 +137,11 @@ plugin_init (GstPlugin * plugin)
return FALSE;
}
if (!gst_element_register (plugin, "glsinkbin",
GST_RANK_NONE, GST_TYPE_GL_SINK_BIN)) {
return FALSE;
}
if (!gst_element_register (plugin, "glfiltercube",
GST_RANK_NONE, GST_TYPE_GL_FILTER_CUBE)) {
return FALSE;