gstreamer/plugins/elements/gstfakesink.c
Andy Wingo a7fa31afef - if you call gst_element_request_pad_by_name() with, say "sink4" as the pad name and there is a "sink%d" template, t...
Original commit message from CVS:
- if you call gst_element_request_pad_by_name() with, say "sink4" as the pad name
and there is a "sink%d" template, the request_new_pad function will be called.
this is to allow for, for example, requesting a certain channel on a multichannel
device.
- to this end, request_new_pad now has the following prototype:
GstPad* (*request_new_pad) (GstElement *element, GstPadTemplate *templ, const gchar *name)
if request_pad_by_name was called with a name like "sink%d" (i.e. no parsing
was necessary) then NULL is passed as 'name'.
- all plugins that use request pads have been changed to the new api.

also, some incremental (untested) alsa updates, switching to the bytestream api...
2001-09-23 22:52:32 +00:00

258 lines
7.1 KiB
C

/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wtay@chello.be>
*
* gstfakesink.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 <gstfakesink.h>
GstElementDetails gst_fakesink_details = {
"Fake Sink",
"Sink",
"Black hole for data",
VERSION,
"Erik Walthinsen <omega@cse.ogi.edu>",
"(C) 1999",
};
/* FakeSink signals and args */
enum {
/* FILL ME */
SIGNAL_HANDOFF,
LAST_SIGNAL
};
enum {
ARG_0,
ARG_NUM_SINKS,
ARG_SILENT,
};
GST_PADTEMPLATE_FACTORY (fakesink_sink_factory,
"sink%d",
GST_PAD_SINK,
GST_PAD_REQUEST,
NULL /* no caps */
);
static void gst_fakesink_class_init (GstFakeSinkClass *klass);
static void gst_fakesink_init (GstFakeSink *fakesink);
static GstPad* gst_fakesink_request_new_pad (GstElement *element, GstPadTemplate *templ, const
gchar *unused);
static void gst_fakesink_set_property (GObject *object, guint prop_id,
const GValue *value, GParamSpec *pspec);
static void gst_fakesink_get_property (GObject *object, guint prop_id,
GValue *value, GParamSpec *pspec);
static void gst_fakesink_chain (GstPad *pad, GstBuffer *buf);
static gboolean gst_fakesink_event (GstPad *pad, GstEventType event, guint64 timestamp, guint32 data);
static GstElementClass *parent_class = NULL;
static guint gst_fakesink_signals[LAST_SIGNAL] = { 0 };
GType
gst_fakesink_get_type (void)
{
static GType fakesink_type = 0;
if (!fakesink_type) {
static const GTypeInfo fakesink_info = {
sizeof(GstFakeSinkClass), NULL,
NULL,
(GClassInitFunc)gst_fakesink_class_init,
NULL,
NULL,
sizeof(GstFakeSink),
0,
(GInstanceInitFunc)gst_fakesink_init,
};
fakesink_type = g_type_register_static (GST_TYPE_ELEMENT, "GstFakeSink", &fakesink_info, 0);
}
return fakesink_type;
}
static void
gst_fakesink_class_init (GstFakeSinkClass *klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass*)klass;
gstelement_class = (GstElementClass*)klass;
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_NUM_SINKS,
g_param_spec_int ("num_sinks", "num_sinks", "num_sinks",
1, G_MAXINT, 1, G_PARAM_READABLE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_SILENT,
g_param_spec_boolean ("silent", "silent", "silent",
FALSE, G_PARAM_READWRITE));
gst_fakesink_signals[SIGNAL_HANDOFF] =
g_signal_new ("handoff", G_TYPE_FROM_CLASS(klass), G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GstFakeSinkClass, handoff), NULL, NULL,
g_cclosure_marshal_VOID__POINTER, G_TYPE_NONE, 1,
G_TYPE_POINTER);
gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_fakesink_set_property);
gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_fakesink_get_property);
gstelement_class->request_new_pad = GST_DEBUG_FUNCPTR (gst_fakesink_request_new_pad);
}
static void
gst_fakesink_init (GstFakeSink *fakesink)
{
GstPad *pad;
pad = gst_pad_new ("sink", GST_PAD_SINK);
gst_element_add_pad (GST_ELEMENT (fakesink), pad);
gst_pad_set_chain_function (pad, GST_DEBUG_FUNCPTR (gst_fakesink_chain));
gst_pad_set_event_function (pad, GST_DEBUG_FUNCPTR (gst_fakesink_event));
fakesink->sinkpads = g_slist_prepend (NULL, pad);
fakesink->numsinkpads = 1;
fakesink->silent = FALSE;
}
static GstPad*
gst_fakesink_request_new_pad (GstElement *element, GstPadTemplate *templ, const gchar *unused)
{
gchar *name;
GstPad *sinkpad;
GstFakeSink *fakesink;
g_return_val_if_fail (GST_IS_FAKESINK (element), NULL);
if (templ->direction != GST_PAD_SINK) {
g_warning ("gstfakesink: request new pad that is not a SINK pad\n");
return NULL;
}
fakesink = GST_FAKESINK (element);
name = g_strdup_printf ("sink%d", fakesink->numsinkpads);
sinkpad = gst_pad_new_from_template (templ, name);
gst_element_add_pad (GST_ELEMENT (fakesink), sinkpad);
fakesink->sinkpads = g_slist_prepend (fakesink->sinkpads, sinkpad);
fakesink->numsinkpads++;
return sinkpad;
}
static void
gst_fakesink_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
{
GstFakeSink *sink;
/* it's not null if we got it, but it might not be ours */
sink = GST_FAKESINK (object);
switch (prop_id) {
case ARG_SILENT:
sink->silent = g_value_get_boolean (value);
break;
default:
break;
}
}
static void
gst_fakesink_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
{
GstFakeSink *sink;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_FAKESINK (object));
sink = GST_FAKESINK (object);
switch (prop_id) {
case ARG_NUM_SINKS:
g_value_set_int (value, sink->numsinkpads);
break;
case ARG_SILENT:
g_value_set_boolean (value, sink->silent);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/**
* gst_fakesink_chain:
* @pad: the pad this faksink is connected to
* @buffer: the buffer or event that has to be absorbed
*
* Take the buffer or event from the pad and unref it without doing
* anything with it.
*/
static void
gst_fakesink_chain (GstPad *pad, GstBuffer *buf)
{
GstFakeSink *fakesink;
g_return_if_fail (pad != NULL);
g_return_if_fail (GST_IS_PAD (pad));
g_return_if_fail (buf != NULL);
fakesink = GST_FAKESINK (gst_pad_get_parent (pad));
if (GST_IS_EVENT(buf)) {
g_print("fakesink: have event!\n");
return;
}
if (!fakesink->silent)
g_print("fakesink: chain ******* (%s:%s)< (%d bytes, %lld) \n",
GST_DEBUG_PAD_NAME (pad), GST_BUFFER_SIZE (buf), GST_BUFFER_TIMESTAMP (buf));
g_signal_emit (G_OBJECT (fakesink), gst_fakesink_signals[SIGNAL_HANDOFF], 0, buf);
gst_buffer_unref (buf);
}
gboolean
gst_fakesink_factory_init (GstElementFactory *factory)
{
gst_elementfactory_add_padtemplate (factory, GST_PADTEMPLATE_GET (fakesink_sink_factory));
return TRUE;
}
static gboolean
gst_fakesink_event (GstPad *pad, GstEventType event, guint64 timestamp, guint32 data)
{
GST_DEBUG (GST_CAT_EVENT, "fakesink has event %d on pad %s:%s\n",event,GST_DEBUG_PAD_NAME(pad));
if (event == GST_EVENT_EOS) {
GST_DEBUG(GST_CAT_EVENT, "have EOS\n");
}
return FALSE;
}