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121 lines
3.6 KiB
C
121 lines
3.6 KiB
C
/* GStreamer
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* Copyright (C) 2010 David Schleef <ds@schleef.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <gst/gst.h>
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#include <gst/base/gstbasesink.h>
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#include "gstchecksumsink.h"
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static void gst_checksum_sink_dispose (GObject * object);
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static void gst_checksum_sink_finalize (GObject * object);
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static gboolean gst_checksum_sink_start (GstBaseSink * sink);
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static gboolean gst_checksum_sink_stop (GstBaseSink * sink);
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static GstFlowReturn
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gst_checksum_sink_render (GstBaseSink * sink, GstBuffer * buffer);
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static GstStaticPadTemplate gst_checksum_sink_sink_template =
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GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS_ANY);
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static GstStaticPadTemplate gst_checksum_sink_src_template =
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GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS_ANY);
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/* class initialization */
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#define gst_checksum_sink_parent_class parent_class
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G_DEFINE_TYPE (GstChecksumSink, gst_checksum_sink, GST_TYPE_BASE_SINK);
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static void
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gst_checksum_sink_class_init (GstChecksumSinkClass * klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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GstBaseSinkClass *base_sink_class = GST_BASE_SINK_CLASS (klass);
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gobject_class->dispose = gst_checksum_sink_dispose;
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gobject_class->finalize = gst_checksum_sink_finalize;
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base_sink_class->start = GST_DEBUG_FUNCPTR (gst_checksum_sink_start);
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base_sink_class->stop = GST_DEBUG_FUNCPTR (gst_checksum_sink_stop);
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base_sink_class->render = GST_DEBUG_FUNCPTR (gst_checksum_sink_render);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_checksum_sink_src_template));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_checksum_sink_sink_template));
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gst_element_class_set_metadata (element_class, "Checksum sink",
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"Debug/Sink", "Calculates a checksum for buffers",
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"David Schleef <ds@schleef.org>");
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}
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static void
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gst_checksum_sink_init (GstChecksumSink * checksumsink)
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{
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gst_base_sink_set_sync (GST_BASE_SINK (checksumsink), FALSE);
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}
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void
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gst_checksum_sink_dispose (GObject * object)
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{
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G_OBJECT_CLASS (parent_class)->dispose (object);
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}
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void
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gst_checksum_sink_finalize (GObject * object)
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{
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static gboolean
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gst_checksum_sink_start (GstBaseSink * sink)
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{
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return TRUE;
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}
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static gboolean
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gst_checksum_sink_stop (GstBaseSink * sink)
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{
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return TRUE;
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}
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static GstFlowReturn
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gst_checksum_sink_render (GstBaseSink * sink, GstBuffer * buffer)
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{
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gchar *s;
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GstMapInfo map;
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gst_buffer_map (buffer, &map, GST_MAP_READ);
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s = g_compute_checksum_for_data (G_CHECKSUM_SHA1, map.data, map.size);
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gst_buffer_unmap (buffer, &map);
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g_print ("%" GST_TIME_FORMAT " %s\n",
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GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)), s);
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g_free (s);
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return GST_FLOW_OK;
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}
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