gstreamer/gst/rtjpeg/gstrtjpegdec.c

/* GStreamer
 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
 *
 * 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 <gstrtjpegdec.h>



/* elementfactory information */
GstElementDetails gst_rtjpegdec_details = {
  "RTjpeg decoder",
  "Codec/Video/Decoder",
  "LGPL",
  "Decodes video in RTjpeg format",
  VERSION,
  "Erik Walthinsen <omega@cse.ogi.edu>",
  "(C) 1999",
};

/* GstRTJpegDec signals and args */
enum {
  /* FILL ME */
  LAST_SIGNAL
};

enum {
  ARG_0,
  ARG_QUALITY,
};


static void	gst_rtjpegdec_class_init	(GstRTJpegDecClass *klass);
static void	gst_rtjpegdec_init		(GstRTJpegDec *rtjpegdec);

static void	gst_rtjpegdec_chain		(GstPad *pad, GstBuffer *buf);

static GstElementClass *parent_class = NULL;
/*static guint gst_rtjpegdec_signals[LAST_SIGNAL] = { 0 }; */

GType
gst_rtjpegdec_get_type (void)
{
  static GType rtjpegdec_type = 0;

  if (!rtjpegdec_type) {
    static const GTypeInfo rtjpegdec_info = {
      sizeof(GstRTJpegDecClass),      NULL,
      NULL,
      (GClassInitFunc)gst_rtjpegdec_class_init,
      NULL,
      NULL,
      sizeof(GstRTJpegDec),
      0,
      (GInstanceInitFunc)gst_rtjpegdec_init,
    };
    rtjpegdec_type = g_type_register_static(GST_TYPE_ELEMENT, "GstRTJpegDec", &rtjpegdec_info, 0);
  }
  return rtjpegdec_type;
}

static void
gst_rtjpegdec_class_init (GstRTJpegDecClass *klass)
{
  GstElementClass *gstelement_class;

  gstelement_class = (GstElementClass*)klass;

  parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
}

static void
gst_rtjpegdec_init (GstRTJpegDec *rtjpegdec)
{
  rtjpegdec->sinkpad = gst_pad_new("sink",GST_PAD_SINK);
  gst_element_add_pad(GST_ELEMENT(rtjpegdec),rtjpegdec->sinkpad);
  gst_pad_set_chain_function(rtjpegdec->sinkpad,gst_rtjpegdec_chain);
  rtjpegdec->srcpad = gst_pad_new("src",GST_PAD_SRC);
  gst_element_add_pad(GST_ELEMENT(rtjpegdec),rtjpegdec->srcpad);
}

static void
gst_rtjpegdec_chain (GstPad *pad, GstBuffer *buf)
{
  GstRTJpegDec *rtjpegdec;
  guchar *data;
  gulong size;

  g_return_if_fail (pad != NULL);
  g_return_if_fail (GST_IS_PAD (pad));
  g_return_if_fail (buf != NULL);

  rtjpegdec = GST_RTJPEGDEC (GST_OBJECT_PARENT (pad));
  data = GST_BUFFER_DATA(buf);
  size = GST_BUFFER_SIZE(buf);

  gst_info("would be encoding frame here\n");

  gst_pad_push(rtjpegdec->srcpad,buf);
}