gstreamer/libs/gst/bytestream/bstest.c

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/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wtay@chello.be>
*
* gstidentity.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 <gst/gst.h>
#include <gst/bytestream/bytestream.h>
#define GST_TYPE_IDENTITY \
(gst_identity_get_type())
#define GST_IDENTITY(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_IDENTITY,GstIdentity))
#define GST_IDENTITY_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_IDENTITY,GstIdentityClass))
#define GST_IS_IDENTITY(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_IDENTITY))
#define GST_IS_IDENTITY_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_IDENTITY))
typedef struct _GstIdentity GstIdentity;
typedef struct _GstIdentityClass GstIdentityClass;
struct _GstIdentity {
GstElement element;
GstPad *sinkpad;
GstPad *srcpad;
GstByteStream *bs;
gint byte_size;
gint count;
};
struct _GstIdentityClass {
GstElementClass parent_class;
};
GType gst_identity_get_type(void);
GstElementDetails gst_identity_details = {
"ByteStreamTest",
"Filter",
"Test for the GstByteStream code",
VERSION,
"Erik Walthinsen <omega@temple-baptist.com>",
"(C) 2001",
};
/* Identity signals and args */
enum {
/* FILL ME */
LAST_SIGNAL
};
enum {
ARG_0,
ARG_BYTE_SIZE,
ARG_COUNT,
};
static void gst_identity_class_init (GstIdentityClass *klass);
static void gst_identity_init (GstIdentity *identity);
static void gst_identity_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
static void gst_identity_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
static void gst_identity_loop (GstElement *element);
static GstElementClass *parent_class = NULL;
// static guint gst_identity_signals[LAST_SIGNAL] = { 0 };
GType
gst_identity_get_type (void)
{
static GType identity_type = 0;
if (!identity_type) {
static const GTypeInfo identity_info = {
sizeof(GstIdentityClass), NULL,
NULL,
(GClassInitFunc)gst_identity_class_init,
NULL,
NULL,
sizeof(GstIdentity),
0,
(GInstanceInitFunc)gst_identity_init,
};
identity_type = g_type_register_static (GST_TYPE_ELEMENT, "GstBSTest", &identity_info, 0);
}
return identity_type;
}
static void
gst_identity_class_init (GstIdentityClass *klass)
{
GObjectClass *gobject_class;
gobject_class = (GObjectClass*)klass;
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_BYTE_SIZE,
g_param_spec_uint ("byte_size", "byte_size", "byte_size",
0, G_MAXUINT, 0, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_COUNT,
g_param_spec_uint ("count", "count", "count",
0, G_MAXUINT, 0, G_PARAM_READWRITE));
gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_identity_set_property);
gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_identity_get_property);
}
/*
static GstPadNegotiateReturn
gst_identity_negotiate_src (GstPad *pad, GstCaps **caps, gpointer *data)
{
GstIdentity *identity;
identity = GST_IDENTITY (gst_pad_get_parent (pad));
return gst_pad_negotiate_proxy (pad, identity->sinkpad, caps);
}
static GstPadNegotiateReturn
gst_identity_negotiate_sink (GstPad *pad, GstCaps **caps, gpointer *data)
{
GstIdentity *identity;
identity = GST_IDENTITY (gst_pad_get_parent (pad));
return gst_pad_negotiate_proxy (pad, identity->srcpad, caps);
}
*/
static void
gst_identity_init (GstIdentity *identity)
{
identity->sinkpad = gst_pad_new ("sink", GST_PAD_SINK);
gst_element_add_pad (GST_ELEMENT (identity), identity->sinkpad);
//gst_pad_set_negotiate_function (identity->sinkpad, gst_identity_negotiate_sink);
identity->srcpad = gst_pad_new ("src", GST_PAD_SRC);
gst_element_add_pad (GST_ELEMENT (identity), identity->srcpad);
//gst_pad_set_negotiate_function (identity->srcpad, gst_identity_negotiate_src);
gst_element_set_loop_function (GST_ELEMENT (identity), gst_identity_loop);
identity->byte_size = 384;
identity->count = 5;
identity->bs = gst_bytestream_new(identity->sinkpad);
}
static void
gst_identity_loop (GstElement *element)
{
GstIdentity *identity;
GstBuffer *buf;
int i;
g_return_if_fail (element != NULL);
g_return_if_fail (GST_IS_IDENTITY (element));
identity = GST_IDENTITY (element);
/* THIS IS THE BUFFER BASED ONE
do {
// g_print("\n");
for (i=0;i<identity->count;i++) {
// g_print("bstest: getting a buffer of %d bytes\n",identity->byte_size);
buf = gst_bytestream_read(identity->bs,identity->byte_size);
if (!buf) g_print("BUFFER IS BOGUS\n");
// g_print("pushing the buffer, %d bytes at %d\n",GST_BUFFER_SIZE(buf),GST_BUFFER_OFFSET(buf));
gst_pad_push(identity->srcpad,buf);
// g_print("\n");
gst_bytestream_print_status(identity->bs);
// g_print("\n\n");
}
exit(1);
} while (!GST_ELEMENT_IS_COTHREAD_STOPPING(element));
*/
/* THIS IS THE BYTE BASED ONE*/
do {
for (i=0;i<identity->count;i++) {
buf = gst_buffer_new();
// note that this is dangerous, as it does *NOT* refcount the data, it can go away!!!
GST_BUFFER_DATA(buf) = gst_bytestream_peek_bytes(identity->bs,identity->byte_size);
GST_BUFFER_SIZE(buf) = identity->byte_size;
GST_BUFFER_FLAG_SET(buf,GST_BUFFER_DONTFREE);
gst_pad_push(identity->srcpad,buf);
gst_bytestream_flush(identity->bs,identity->byte_size);
}
exit(1);
} while (!GST_ELEMENT_IS_COTHREAD_STOPPING(element));
/**/
}
static void
gst_identity_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
{
GstIdentity *identity;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_IDENTITY (object));
identity = GST_IDENTITY (object);
switch (prop_id) {
case ARG_BYTE_SIZE:
identity->byte_size = g_value_get_uint (value);
break;
case ARG_COUNT:
identity->count = g_value_get_uint (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void gst_identity_get_property(GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) {
GstIdentity *identity;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_IDENTITY (object));
identity = GST_IDENTITY (object);
switch (prop_id) {
case ARG_BYTE_SIZE:
g_value_set_uint (value, identity->byte_size);
break;
case ARG_COUNT:
g_value_set_uint (value, identity->count);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
plugin_init (GModule *module, GstPlugin *plugin)
{
GstElementFactory *factory;
// we need gstbytestream
if (!gst_library_load ("gstbytestream")) {
g_print("can't load bytestream\n");
return FALSE;
}
/* We need to create an ElementFactory for each element we provide.
* This consists of the name of the element, the GType identifier,
* and a pointer to the details structure at the top of the file.
*/
factory = gst_elementfactory_new("gstbstest", GST_TYPE_IDENTITY, &gst_identity_details);
g_return_val_if_fail(factory != NULL, FALSE);
/* The very last thing is to register the elementfactory with the plugin. */
gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
return TRUE;
}
GstPluginDesc plugin_desc = {
GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"gstbstest",
plugin_init
};