jpege_tables.h

来自「motion Jpeg 在SPI DSP平台优化好的代码」· C头文件 代码 · 共 41 行

////////////////////////////////////////////////////////////////////////////////////////////////////
//
//                      jpege_tables.h (JPEG Encoder Table declarations)
//
//      Notice:         COPYRIGHT (C) STREAM PROCESSORS, INC. 2005-2007
//                      THIS PROGRAM IS PROVIDED UNDER THE TERMS OF THE SPI
//                      END-USER LICENSE AGREEMENT (EULA). THE PROGRAM MAY ONLY
//                      BE USED IN A MANNER EXPLICITLY SPECIFIED IN THE EULA,
//                      WHICH INCLUDES LIMITATIONS ON COPYING, MODIFYING,
//                      REDISTRIBUTION AND WARANTIES. UNAUTHORIZED USE OF THIS
//                      PROGRAM IS STRICTLY PROHIBITED. YOU MAY OBTAIN A COPY OF
//                      THE EULA FROM WWW.STREAMPROCESSORS.COM. 
//    
////////////////////////////////////////////////////////////////////////////////////////////////////


#ifndef __JPEGE_TABLES_H
#define __JPEGE_TABLES_H

extern const unsigned char zigzag[];

  /* These are the sample quantization tables given in JPEG spec section K.1.
	The spec says that the values given produce "good" quality, and
	when divided by 2, "very good" quality.*/
extern unsigned char std_luma_quant[];
    
extern unsigned char std_chroma_quant[];
    
// Standard Huffman tables (cf. JPEG standard section K.3) */
extern unsigned char std_dc_luma_bits[];
extern unsigned char std_dc_luma_values[];

extern unsigned char std_dc_chroma_bits[];
extern unsigned char std_dc_chroma_values[];

extern unsigned char std_ac_luma_bits[];
extern unsigned char std_ac_luma_values[];
extern unsigned char std_ac_chroma_bits[];
extern unsigned char std_ac_chroma_values[];
#endif