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gstreamer/gst/elements/gstidentity.c
Thomas Vander Stichele 5f91e9ad66 suffix errors with period. 
Original commit message from CVS:
suffix errors with period.
use (NULL) over NULL
2004-01-31 19:30:31 +00:00

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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 <stdlib.h>
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "../gst-i18n-lib.h"
#include "gstidentity.h"
GST_DEBUG_CATEGORY_STATIC (gst_identity_debug);
#define GST_CAT_DEFAULT gst_identity_debug
GstElementDetails gst_identity_details = GST_ELEMENT_DETAILS (
"Identity",
"Generic",
"Pass data without modification",
"Erik Walthinsen <omega@cse.ogi.edu>"
);
/* Identity signals and args */
enum {
SIGNAL_HANDOFF,
/* FILL ME */
LAST_SIGNAL
};
enum {
ARG_0,
ARG_LOOP_BASED,
ARG_SLEEP_TIME,
ARG_DUPLICATE,
ARG_ERROR_AFTER,
ARG_DROP_PROBABILITY,
ARG_SILENT,
ARG_LAST_MESSAGE,
ARG_DUMP
};
#define _do_init(bla) \
GST_DEBUG_CATEGORY_INIT (gst_identity_debug, "identity", 0, "identity element");
GST_BOILERPLATE_FULL (GstIdentity, gst_identity, GstElement, GST_TYPE_ELEMENT, _do_init);
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_chain (GstPad *pad, GstData *_data);
static guint gst_identity_signals[LAST_SIGNAL] = { 0 };
static void
gst_identity_base_init (gpointer g_class)
{
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_set_details (gstelement_class, &gst_identity_details);
}
static void
gst_identity_class_init (GstIdentityClass *klass)
{
GObjectClass *gobject_class;
gobject_class = G_OBJECT_CLASS (klass);
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_LOOP_BASED,
g_param_spec_boolean ("loop-based", "Loop-based",
"Set to TRUE to use loop-based rather than chain-based scheduling",
TRUE, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_SLEEP_TIME,
g_param_spec_uint ("sleep-time", "Sleep time", "Microseconds to sleep between processing",
0, G_MAXUINT, 0, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DUPLICATE,
g_param_spec_uint ("duplicate", "Duplicate Buffers", "Push the buffers N times",
0, G_MAXUINT, 1, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_ERROR_AFTER,
g_param_spec_int ("error_after", "Error After", "Error after N buffers",
G_MININT, G_MAXINT, -1, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DROP_PROBABILITY,
g_param_spec_float ("drop_probability", "Drop Probability", "The Probability a buffer is dropped",
0.0, 1.0, 0.0, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_SILENT,
g_param_spec_boolean ("silent", "silent", "silent",
FALSE, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_LAST_MESSAGE,
g_param_spec_string ("last-message", "last-message", "last-message",
NULL, G_PARAM_READABLE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DUMP,
g_param_spec_boolean("dump", "Dump", "Dump buffer contents",
FALSE, G_PARAM_READWRITE));
gst_identity_signals[SIGNAL_HANDOFF] =
g_signal_new ("handoff", G_TYPE_FROM_CLASS(klass), G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GstIdentityClass, handoff), NULL, NULL,
gst_marshal_VOID__POINTER, G_TYPE_NONE, 1,
GST_TYPE_BUFFER);
gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_identity_set_property);
gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_identity_get_property);
}
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_chain_function (identity->sinkpad, GST_DEBUG_FUNCPTR (gst_identity_chain));
gst_pad_set_link_function (identity->sinkpad, gst_pad_proxy_pad_link);
gst_pad_set_getcaps_function (identity->sinkpad, gst_pad_proxy_getcaps);
identity->srcpad = gst_pad_new ("src", GST_PAD_SRC);
gst_element_add_pad (GST_ELEMENT (identity), identity->srcpad);
gst_pad_set_link_function (identity->srcpad, gst_pad_proxy_pad_link);
gst_pad_set_getcaps_function (identity->srcpad, gst_pad_proxy_getcaps);
identity->loop_based = FALSE;
identity->sleep_time = 0;
identity->duplicate = 1;
identity->error_after = -1;
identity->drop_probability = 0.0;
identity->silent = FALSE;
identity->dump = FALSE;
identity->last_message = NULL;
identity->srccaps = NULL;
}
static void
gst_identity_chain (GstPad *pad, GstData *_data)
{
GstBuffer *buf = GST_BUFFER (_data);
GstIdentity *identity;
guint i;
g_return_if_fail (pad != NULL);
g_return_if_fail (GST_IS_PAD (pad));
g_return_if_fail (buf != NULL);
identity = GST_IDENTITY (gst_pad_get_parent (pad));
if (identity->error_after >= 0) {
identity->error_after--;
if (identity->error_after == 0) {
gst_buffer_unref (buf);
GST_ELEMENT_ERROR (identity, CORE, FAILED,
(_("Failed after iterations as requested.")),
(NULL));
return;
}
}
if (identity->drop_probability > 0.0) {
if ((gfloat)(1.0*rand()/(RAND_MAX)) < identity->drop_probability) {
if (identity->last_message != NULL) {
g_free (identity->last_message);
}
identity->last_message = g_strdup_printf ("dropping ******* (%s:%s)i (%d bytes, %"
G_GINT64_FORMAT ")",
GST_DEBUG_PAD_NAME (identity->sinkpad), GST_BUFFER_SIZE (buf), GST_BUFFER_TIMESTAMP (buf));
g_object_notify (G_OBJECT (identity), "last-message");
gst_buffer_unref (buf);
return;
}
}
if (identity->dump) {
gst_util_dump_mem (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf));
}
for (i = identity->duplicate; i; i--) {
if (!identity->silent) {
g_free (identity->last_message);
identity->last_message = g_strdup_printf ("chain ******* (%s:%s)i (%d bytes, %"
G_GINT64_FORMAT ")",
GST_DEBUG_PAD_NAME (identity->sinkpad), GST_BUFFER_SIZE (buf), GST_BUFFER_TIMESTAMP (buf));
g_object_notify (G_OBJECT (identity), "last-message");
}
g_signal_emit (G_OBJECT (identity), gst_identity_signals[SIGNAL_HANDOFF], 0,
buf);
if (i>1)
gst_buffer_ref (buf);
gst_pad_push (identity->srcpad, GST_DATA (buf));
if (identity->sleep_time)
g_usleep (identity->sleep_time);
}
}
static void
gst_identity_loop (GstElement *element)
{
GstIdentity *identity;
GstBuffer *buf;
g_return_if_fail (element != NULL);
g_return_if_fail (GST_IS_IDENTITY (element));
identity = GST_IDENTITY (element);
buf = GST_BUFFER (gst_pad_pull (identity->sinkpad));
if (GST_IS_EVENT (buf)) {
GstEvent *event = GST_EVENT (buf);
if (GST_EVENT_IS_INTERRUPT (event)) {
gst_event_unref (event);
}
else {
gst_pad_event_default (identity->sinkpad, event);
}
}
else {
gst_identity_chain (identity->sinkpad, GST_DATA (buf));
}
}
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_LOOP_BASED:
identity->loop_based = g_value_get_boolean (value);
if (identity->loop_based) {
gst_element_set_loop_function (GST_ELEMENT (identity), gst_identity_loop);
gst_pad_set_chain_function (identity->sinkpad, NULL);
}
else {
gst_pad_set_chain_function (identity->sinkpad, gst_identity_chain);
gst_element_set_loop_function (GST_ELEMENT (identity), NULL);
}
break;
case ARG_SLEEP_TIME:
identity->sleep_time = g_value_get_uint (value);
break;
case ARG_SILENT:
identity->silent = g_value_get_boolean (value);
break;
case ARG_DUPLICATE:
identity->duplicate = g_value_get_uint (value);
break;
case ARG_DUMP:
identity->dump = g_value_get_boolean (value);
break;
case ARG_ERROR_AFTER:
identity->error_after = g_value_get_int (value);
break;
case ARG_DROP_PROBABILITY:
identity->drop_probability = g_value_get_float (value);
break;
default:
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_LOOP_BASED:
g_value_set_boolean (value, identity->loop_based);
break;
case ARG_SLEEP_TIME:
g_value_set_uint (value, identity->sleep_time);
break;
case ARG_DUPLICATE:
g_value_set_uint (value, identity->duplicate);
break;
case ARG_ERROR_AFTER:
g_value_set_int (value, identity->error_after);
break;
case ARG_DROP_PROBABILITY:
g_value_set_float (value, identity->drop_probability);
break;
case ARG_SILENT:
g_value_set_boolean (value, identity->silent);
break;
case ARG_DUMP:
g_value_set_boolean (value, identity->dump);
break;
case ARG_LAST_MESSAGE:
g_value_set_string (value, identity->last_message);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
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