/*

 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

 * All rights reserved.

 * This component and the accompanying materials are made available

 * under the terms of "Eclipse Public License v1.0"

 * which accompanies this distribution, and is available

 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

 *

 * Initial Contributors:

 * Nokia Corporation - initial contribution.

 *

 * Contributors:

 *

 * Description: 

 *

 */

 #ifndef _JPEG_INTERNAL_H_

 #define _JPEG_INTERNAL_H_

 #include "jpeg.h"

 #include "jpeg_huffman.h"

 #include "jpeg_bits.h"

 #include "jpeg_debug.h"

 #ifndef TRUE

 #define TRUE 1

 #endif

 #ifndef FALSE

 #define FALSE 0

 #endif

 #define JPEG_MAX_COMPONENTS 256

 typedef struct _JpegScan JpegScan;

 typedef struct _JpegQuantTable JpegQuantTable;

 #define JPEG_ENTROPY_SEGMENT 0x0001

 #define JPEG_LENGTH 0x0002

 struct _JpegQuantTable {

   int pq;

   int16_t quantizer[64];

 };

 struct _JpegDecoder {

 	int width;

 	int height;

 	int depth;

 	int n_components;

 	JpegBits bits;

         int error;

         char *error_message;

         int sof_type;

 	int width_blocks;

 	int height_blocks;

 	int restart_interval;

 	unsigned char *data;

 	unsigned int data_len;

 	struct{

 		int id;

 		int h_sample;

 		int v_sample;

 		int quant_table;

 		int h_subsample;

 		int v_subsample;

 		unsigned char *image;

 		int rowstride;

 	} components[JPEG_MAX_COMPONENTS];

         JpegQuantTable quant_tables[4];

 	HuffmanTable dc_huff_table[4];

 	HuffmanTable ac_huff_table[4];

 	int scan_list_length;

 	struct{

 		int component_index;

 		int dc_table;

 		int ac_table;

 		int quant_table;

 		int x;

 		int y;

 		int offset;

 	}scan_list[10];

 	int scan_h_subsample;

 	int scan_v_subsample;

 	/* scan state */

 	int x,y;

 	int dc[4];

 };

 struct _JpegScan {

 	int length;

 	int n_components;

 	struct {

 		int index;

 		int dc_table;

 		int ac_table;

 	}block_list[10];

 };

 /* jpeg.c */

 int jpeg_decoder_sof_baseline_dct(JpegDecoder *dec, JpegBits *bits);

 int jpeg_decoder_define_quant_table(JpegDecoder *dec, JpegBits *bits);

 int jpeg_decoder_define_huffman_table(JpegDecoder *dec, JpegBits *bits);

 int jpeg_decoder_sos(JpegDecoder *dec, JpegBits *bits);

 int jpeg_decoder_soi(JpegDecoder *dec, JpegBits *bits);

 int jpeg_decoder_eoi(JpegDecoder *dec, JpegBits *bits);

 int jpeg_decoder_application0(JpegDecoder *dec, JpegBits *bits);

 int jpeg_decoder_application_misc(JpegDecoder *dec, JpegBits *bits);

 int jpeg_decoder_comment(JpegDecoder *dec, JpegBits *bits);

 int jpeg_decoder_restart_interval(JpegDecoder *dec, JpegBits *bits);

 int jpeg_decoder_restart(JpegDecoder *dec, JpegBits *bits);

 void jpeg_decoder_decode_entropy_segment(JpegDecoder *dec);

 #endif