sl@0: /*
sl@0: * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: * All rights reserved.
sl@0: * This component and the accompanying materials are made available
sl@0: * under the terms of "Eclipse Public License v1.0"
sl@0: * which accompanies this distribution, and is available
sl@0: * at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: *
sl@0: * Initial Contributors:
sl@0: * Nokia Corporation - initial contribution.
sl@0: *
sl@0: * Contributors:
sl@0: *
sl@0: * Description: 
sl@0: *
sl@0: */
sl@0: 
sl@0: #ifndef _JPEG_INTERNAL_H_
sl@0: #define _JPEG_INTERNAL_H_
sl@0: 
sl@0: #include "jpeg.h"
sl@0: #include "jpeg_huffman.h"
sl@0: #include "jpeg_bits.h"
sl@0: #include "jpeg_debug.h"
sl@0: 
sl@0: #ifndef TRUE
sl@0: #define TRUE 1
sl@0: #endif
sl@0: #ifndef FALSE
sl@0: #define FALSE 0
sl@0: #endif
sl@0: 
sl@0: 
sl@0: #define JPEG_MAX_COMPONENTS 256
sl@0: 
sl@0: typedef struct _JpegScan JpegScan;
sl@0: typedef struct _JpegQuantTable JpegQuantTable;
sl@0: 
sl@0: #define JPEG_ENTROPY_SEGMENT 0x0001
sl@0: #define JPEG_LENGTH 0x0002
sl@0: 
sl@0: struct _JpegQuantTable {
sl@0:   int pq;
sl@0:   int16_t quantizer[64];
sl@0: };
sl@0: 
sl@0: struct _JpegDecoder {
sl@0: 	int width;
sl@0: 	int height;
sl@0: 	int depth;
sl@0: 	int n_components;
sl@0: 	JpegBits bits;
sl@0:         int error;
sl@0:         char *error_message;
sl@0: 
sl@0:         int sof_type;
sl@0: 
sl@0: 	int width_blocks;
sl@0: 	int height_blocks;
sl@0: 
sl@0: 	int restart_interval;
sl@0: 
sl@0: 	unsigned char *data;
sl@0: 	unsigned int data_len;
sl@0: 
sl@0: 	struct{
sl@0: 		int id;
sl@0: 		int h_sample;
sl@0: 		int v_sample;
sl@0: 		int quant_table;
sl@0: 
sl@0: 		int h_subsample;
sl@0: 		int v_subsample;
sl@0: 		unsigned char *image;
sl@0: 		int rowstride;
sl@0: 	} components[JPEG_MAX_COMPONENTS];
sl@0: 
sl@0:         JpegQuantTable quant_tables[4];
sl@0: 	HuffmanTable dc_huff_table[4];
sl@0: 	HuffmanTable ac_huff_table[4];
sl@0: 
sl@0: 	int scan_list_length;
sl@0: 	struct{
sl@0: 		int component_index;
sl@0: 		int dc_table;
sl@0: 		int ac_table;
sl@0: 		int quant_table;
sl@0: 		int x;
sl@0: 		int y;
sl@0: 		int offset;
sl@0: 	}scan_list[10];
sl@0: 	int scan_h_subsample;
sl@0: 	int scan_v_subsample;
sl@0: 
sl@0: 	/* scan state */
sl@0: 	int x,y;
sl@0: 	int dc[4];
sl@0: };
sl@0: 
sl@0: struct _JpegScan {
sl@0: 	int length;
sl@0: 	
sl@0: 	int n_components;
sl@0: 	struct {
sl@0: 		int index;
sl@0: 		int dc_table;
sl@0: 		int ac_table;
sl@0: 	}block_list[10];
sl@0: };
sl@0: 
sl@0: 
sl@0: /* jpeg.c */
sl@0: 
sl@0: int jpeg_decoder_sof_baseline_dct(JpegDecoder *dec, JpegBits *bits);
sl@0: int jpeg_decoder_define_quant_table(JpegDecoder *dec, JpegBits *bits);
sl@0: int jpeg_decoder_define_huffman_table(JpegDecoder *dec, JpegBits *bits);
sl@0: int jpeg_decoder_sos(JpegDecoder *dec, JpegBits *bits);
sl@0: int jpeg_decoder_soi(JpegDecoder *dec, JpegBits *bits);
sl@0: int jpeg_decoder_eoi(JpegDecoder *dec, JpegBits *bits);
sl@0: int jpeg_decoder_application0(JpegDecoder *dec, JpegBits *bits);
sl@0: int jpeg_decoder_application_misc(JpegDecoder *dec, JpegBits *bits);
sl@0: int jpeg_decoder_comment(JpegDecoder *dec, JpegBits *bits);
sl@0: int jpeg_decoder_restart_interval(JpegDecoder *dec, JpegBits *bits);
sl@0: int jpeg_decoder_restart(JpegDecoder *dec, JpegBits *bits);
sl@0: void jpeg_decoder_decode_entropy_segment(JpegDecoder *dec);
sl@0: 
sl@0: 
sl@0: #endif
sl@0: 
sl@0: