1 /* 2 * linux/drivers/video/bootsplash/decode-jpg.h - a tiny jpeg decoder. 3 * 4 * (w) August 2001 by Michael Schroeder, <mls@suse.de> 5 */ 6 7 #ifndef __DECODE_JPG_H 8 #define __DECODE_JPG_H 9 10 #define ERR_NO_SOI 1 11 #define ERR_NOT_8BIT 2 12 #define ERR_HEIGHT_MISMATCH 3 13 #define ERR_WIDTH_MISMATCH 4 14 #define ERR_BAD_WIDTH_OR_HEIGHT 5 15 #define ERR_TOO_MANY_COMPPS 6 16 #define ERR_ILLEGAL_HV 7 17 #define ERR_QUANT_TABLE_SELECTOR 8 18 #define ERR_NOT_YCBCR_221111 9 19 #define ERR_UNKNOWN_CID_IN_SCAN 10 20 #define ERR_NOT_SEQUENTIAL_DCT 11 21 #define ERR_WRONG_MARKER 12 22 #define ERR_NO_EOI 13 23 #define ERR_BAD_TABLES 14 24 #define ERR_DEPTH_MISMATCH 15 25 26 struct jpeg_decdata { 27 int dcts[6 * 64 + 16]; 28 int out[64 * 6]; 29 int dquant[3][64]; 30 }; 31 32 extern int jpeg_decode(unsigned char *, unsigned char *, int, int, int, 33 struct jpeg_decdata *); 34 extern int jpeg_check_size(unsigned char *, int, int); 35 36 #endif 37