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/* GStreamer
* Copyright (C) 2010 David Schleef <ds@schleef.org>
*
* 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/gst.h>
#include <gst/base/gstbasesink.h>
#include "gstchecksumsink.h"
static void gst_checksum_sink_dispose (GObject * object);
static void gst_checksum_sink_finalize (GObject * object);
static gboolean gst_checksum_sink_start (GstBaseSink * sink);
static gboolean gst_checksum_sink_stop (GstBaseSink * sink);
static GstFlowReturn
gst_checksum_sink_render (GstBaseSink * sink, GstBuffer * buffer);
static GstStaticPadTemplate gst_checksum_sink_sink_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS_ANY);
static GstStaticPadTemplate gst_checksum_sink_src_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS_ANY);
/* class initialization */
#define gst_checksum_sink_parent_class parent_class
G_DEFINE_TYPE (GstChecksumSink, gst_checksum_sink, GST_TYPE_BASE_SINK);
static void
gst_checksum_sink_class_init (GstChecksumSinkClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GstBaseSinkClass *base_sink_class = GST_BASE_SINK_CLASS (klass);
gobject_class->dispose = gst_checksum_sink_dispose;
gobject_class->finalize = gst_checksum_sink_finalize;
base_sink_class->start = GST_DEBUG_FUNCPTR (gst_checksum_sink_start);
base_sink_class->stop = GST_DEBUG_FUNCPTR (gst_checksum_sink_stop);
base_sink_class->render = GST_DEBUG_FUNCPTR (gst_checksum_sink_render);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_checksum_sink_src_template));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_checksum_sink_sink_template));
gst_element_class_set_static_metadata (element_class, "Checksum sink",
"Debug/Sink", "Calculates a checksum for buffers",
"David Schleef <ds@schleef.org>");
}
static void
gst_checksum_sink_init (GstChecksumSink * checksumsink)
{
gst_base_sink_set_sync (GST_BASE_SINK (checksumsink), FALSE);
}
void
gst_checksum_sink_dispose (GObject * object)
{
G_OBJECT_CLASS (parent_class)->dispose (object);
}
void
gst_checksum_sink_finalize (GObject * object)
{
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static gboolean
gst_checksum_sink_start (GstBaseSink * sink)
{
return TRUE;
}
static gboolean
gst_checksum_sink_stop (GstBaseSink * sink)
{
return TRUE;
}
static GstFlowReturn
gst_checksum_sink_render (GstBaseSink * sink, GstBuffer * buffer)
{
gchar *s;
GstMapInfo map;
gst_buffer_map (buffer, &map, GST_MAP_READ);
s = g_compute_checksum_for_data (G_CHECKSUM_SHA1, map.data, map.size);
gst_buffer_unmap (buffer, &map);
g_print ("%" GST_TIME_FORMAT " %s\n",
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)), s);
g_free (s);
return GST_FLOW_OK;
}
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