gstreamer/ext/jpeg/gstjpegenc.h

/* 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.
 */


#ifndef __GST_JPEGENC_H__
#define __GST_JPEGENC_H__


#include <gst/gst.h>
/* this is a hack hack hack to get around jpeglib header bugs... */
#ifdef HAVE_STDLIB_H
# undef HAVE_STDLIB_H
#endif
#include <jpeglib.h>

G_BEGIN_DECLS

#define GST_TYPE_JPEGENC \
  (gst_jpegenc_get_type())
#define GST_JPEGENC(obj) \
  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_JPEGENC,GstJpegEnc))
#define GST_JPEGENC_CLASS(klass) \
  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_JPEGENC,GstJpegEncClass))
#define GST_IS_JPEGENC(obj) \
  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_JPEGENC))
#define GST_IS_JPEGENC_CLASS(klass) \
  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_JPEGENC))

typedef struct _GstJpegEnc GstJpegEnc;
typedef struct _GstJpegEncClass GstJpegEncClass;

struct _GstJpegEnc {
  GstElement element;

  /* pads */
  GstPad *sinkpad,*srcpad;

  /* video state */
  gint format;
  gint width;
  gint height;
  /* the video buffer */
  gint bufsize;
  guint row_stride;
  /* the jpeg line buffer */
  guchar **line[3];

  struct jpeg_compress_struct cinfo;
  struct jpeg_error_mgr jerr;
  struct jpeg_destination_mgr jdest;

  /* properties */
  gint quality;
  gint smoothing;
  gint idct_method;
};

struct _GstJpegEncClass {
  GstElementClass parent_class;

  /* signals */
  void (*frame_encoded) (GstElement *element);
};

GType gst_jpegenc_get_type(void);

G_END_DECLS

#endif /* __GST_JPEGENC_H__ */