gstreamer/testsuite/dynparams/dparamstest.c

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/* GStreamer
* Copyright (C) 2001 Steve Baker <stevebaker_org@yahoo.co.uk>
*
* dparamstest.c:
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <stdlib.h>
#include <string.h>
#include <gst/gst.h>
#include <libs/control/gstcontrol.h>
#define GST_TYPE_DPTEST (gst_dptest_get_type())
#define GST_DPTEST(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DPTEST,GstDpTest))
#define GST_DPTEST_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_DPTEST,GstDpTestClass))
#define GST_IS_DPTEST(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DPTEST))
#define GST_IS_DPTEST_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_DPTEST))
typedef struct _GstDpTest GstDpTest;
typedef struct _GstDpTestClass GstDpTestClass;
struct _GstDpTest
{
GstElement element;
GstPad *sinkpad;
GstPad *srcpad;
GstDParamManager *dpman;
gfloat float1;
gfloat float2;
gboolean bool1;
gdouble double1;
};
struct _GstDpTestClass
{
GstElementClass parent_class;
};
GType gst_dptest_get_type (void);
GstElementDetails gst_dptest_details = {
"DParamsTest",
"Filter",
"Test for the GstDParam code",
VERSION,
"Steve Baker <stevebaker_org@yahoo.co.uk>",
"(C) 2001",
};
enum
{
ARG_0,
};
static void gst_dptest_class_init (GstDpTestClass * klass);
static void gst_dptest_init (GstDpTest * dptest);
static void gst_dptest_set_property (GObject * object, guint prop_id, const GValue * value,
GParamSpec * pspec);
static GstElementStateReturn gst_dptest_change_state (GstElement *element);
static void gst_dptest_chain (GstPad *pad, GstBuffer *buf);
static GstElementClass *parent_class = NULL;
GType
gst_dptest_get_type (void)
{
static GType dptest_type = 0;
if (!dptest_type) {
static const GTypeInfo dptest_info = {
sizeof (GstDpTestClass), NULL,
NULL,
(GClassInitFunc) gst_dptest_class_init,
NULL,
NULL,
sizeof (GstDpTest),
0,
(GInstanceInitFunc) gst_dptest_init,
};
dptest_type = g_type_register_static (GST_TYPE_ELEMENT, "GstDpTest", &dptest_info, 0);
}
return dptest_type;
}
static void
gst_dptest_class_init (GstDpTestClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass*)klass;
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_dptest_set_property);
gstelement_class->change_state = gst_dptest_change_state;
}
static void
gst_dptest_init (GstDpTest * dptest)
{
GstDParamSpec *spec;
dptest->sinkpad = gst_pad_new ("sink", GST_PAD_SINK);
gst_element_add_pad (GST_ELEMENT (dptest), dptest->sinkpad);
gst_pad_set_chain_function(dptest->sinkpad, gst_dptest_chain);
dptest->srcpad = gst_pad_new ("src", GST_PAD_SRC);
gst_element_add_pad (GST_ELEMENT (dptest), dptest->srcpad);
dptest->dpman = gst_dpman_new ("dptest_dpman", GST_ELEMENT(dptest));
gst_dpman_add_required_dparam_direct (dptest->dpman, "float1", G_TYPE_FLOAT, &(dptest->float1));
spec = gst_dpman_get_dparam_spec (dptest->dpman, "float1");
g_value_set_float(spec->min_val, 0.0);
g_value_set_float(spec->max_val, 1.0);
g_value_set_float(spec->default_val, 0.5);
spec->unit_name = "scalar";
dptest->float1 = 0.0;
}
static void
gst_dptest_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec)
{
GstDpTest *dptest;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_DPTEST (object));
dptest = GST_DPTEST (object);
switch (prop_id) {
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstElementStateReturn
gst_dptest_change_state (GstElement *element)
{
GstDpTest *dptest;
g_return_val_if_fail (GST_IS_DPTEST (element), GST_STATE_FAILURE);
g_print("changing state\n");
dptest = GST_DPTEST (element);
if (GST_ELEMENT_CLASS (parent_class)->change_state)
return GST_ELEMENT_CLASS (parent_class)->change_state (element);
return GST_STATE_SUCCESS;
}
static void
gst_dptest_chain (GstPad *pad, GstBuffer *buf)
{
g_print("dp chain\n");
}
int main(int argc,char *argv[]) {
GstElementFactory *factory;
GstElement *src;
GstElement *sink;
GstElement *dp;
GstElement *pipeline;
gst_init (&argc, &argv);
gst_control_init(&argc,&argv);
factory = gst_elementfactory_new ("dptest", GST_TYPE_DPTEST, &gst_dptest_details);
g_assert (factory != NULL);
pipeline = gst_elementfactory_make ("pipeline", "pipeline");
g_assert (pipeline);
src = gst_elementfactory_make ("fakesrc", "src");
g_assert (src);
sink = gst_elementfactory_make ("fakesink", "sink");
g_assert (sink);
dp = gst_elementfactory_make ("dptest", "dp");
g_assert (dp);
gst_element_connect (src, "src", dp, "sink");
gst_element_connect (dp, "src", sink, "sink");
gst_bin_add (GST_BIN (pipeline), src);
gst_bin_add (GST_BIN (pipeline), dp);
gst_bin_add (GST_BIN (pipeline), sink);
gst_element_set_state (GST_ELEMENT (pipeline), GST_STATE_PLAYING);
g_object_set (G_OBJECT (src), "num_buffers", 2, NULL);
gst_bin_iterate (GST_BIN (pipeline));
gst_element_set_state (GST_ELEMENT (pipeline), GST_STATE_NULL);
gst_element_set_state (GST_ELEMENT (pipeline), GST_STATE_PLAYING);
g_object_set (G_OBJECT (src), "num_buffers", 2, NULL);
gst_bin_iterate (GST_BIN (pipeline));
return 0;
}