/* 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_JPEG_DEC_H__

#define __GST_JPEG_DEC_H__

#include <setjmp.h>

#include <gst/gstelement.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_JPEG_DEC \

  (gst_jpeg_dec_get_type())

#define GST_JPEG_DEC(obj) \

  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_JPEG_DEC,GstJpegDec))

#define GST_JPEG_DEC_CLASS(klass) \

  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_JPEG_DEC,GstJpegDecClass))

#define GST_IS_JPEG_DEC(obj) \

  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_JPEG_DEC))

#define GST_IS_JPEG_DEC_CLASS(klass) \

  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_JPEG_DEC))

typedef struct _GstJpegDec           GstJpegDec;

typedef struct _GstJpegDecClass      GstJpegDecClass;

struct GstJpegDecErrorMgr {

  struct jpeg_error_mgr    pub;   /* public fields */

  jmp_buf                  setjmp_buffer;

};

struct GstJpegDecSourceMgr {

  struct jpeg_source_mgr   pub;   /* public fields */

  GstJpegDec              *dec;

};

/* Can't use GstBaseTransform, because GstBaseTransform

 * doesn't handle the N buffers in, 1 buffer out case,

 * but only the 1-in 1-out case */

struct _GstJpegDec {

  GstElement element;

  /* pads */

  GstPad  *sinkpad;

  GstPad  *srcpad;

  GstBuffer *tempbuf;

  /* TRUE if each input buffer contains a whole jpeg image */

  gboolean packetized;

  /* the (expected) timestamp of the next frame */

  guint64  next_ts;

  /* video state */

  gint framerate_numerator;

  gint framerate_denominator;

  /* negotiated state */

  gint     caps_framerate_numerator;

  gint     caps_framerate_denominator;

  gint     caps_width;

  gint     caps_height;

  struct jpeg_decompress_struct cinfo;

  struct GstJpegDecErrorMgr     jerr;

  struct GstJpegDecSourceMgr    jsrc;

};

struct _GstJpegDecClass {

  GstElementClass  parent_class;

};

GType gst_jpeg_dec_get_type(void);

G_END_DECLS

#endif /* __GST_JPEG_DEC_H__ */