/* GStreamer

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

 * Copyright (C) 2012 Collabora Ltd.

 *	Author : Edward Hervey <edward@collabora.com>

 *

 * 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.

 */

#ifndef __GST_JPEG_DEC_H__

#define __GST_JPEG_DEC_H__

#include <setjmp.h>

#include <gst/gst.h>

#include <gst/video/video.h>

#include <gst/video/gstvideodecoder.h>

#include <gst/base/gstadapter.h>

/* this is a hack hack hack to get around jpeglib header bugs... */

#ifdef HAVE_STDLIB_H

# undef HAVE_STDLIB_H

#endif

#include <stdio.h>

#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 {

  GstVideoDecoder decoder;

  /* negotiated state */

  GstVideoCodecState *input_state;

  GstVideoCodecFrame *current_frame;

  GstMapInfo current_frame_map;

  /* parse state */

  gboolean saw_header;

  gint     parse_entropy_len;

  gint     parse_resync;

  /* properties */

  gint     idct_method;

  gint     max_errors;  /* ATOMIC */

  struct jpeg_decompress_struct cinfo;

  struct GstJpegDecErrorMgr     jerr;

  struct GstJpegDecSourceMgr    jsrc;

  /* arrays for indirect decoding */

  gboolean idr_width_allocated;

  guchar *idr_y[16],*idr_u[16],*idr_v[16];

  /* current (parsed) image size */

  guint    rem_img_len;

};

struct _GstJpegDecClass {

  GstVideoDecoderClass decoder_class;

};

GType gst_jpeg_dec_get_type(void);

G_END_DECLS

#endif /* __GST_JPEG_DEC_H__ */