src/lib/jpeg.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 /*
   4  * a tiny jpeg decoder.
   5  *
   6  * written in August 2001 by Michael Schroeder <mls@suse.de>
   7  */
   8
   9 #ifndef __JPEG_H
  10 #define __JPEG_H
  11
  12 #define ERR_NO_SOI 1
  13 #define ERR_NOT_8BIT 2
  14 #define ERR_HEIGHT_MISMATCH 3
  15 #define ERR_WIDTH_MISMATCH 4
  16 #define ERR_BAD_WIDTH_OR_HEIGHT 5
  17 #define ERR_TOO_MANY_COMPPS 6
  18 #define ERR_ILLEGAL_HV 7
  19 #define ERR_QUANT_TABLE_SELECTOR 8
  20 #define ERR_NOT_YCBCR_221111 9
  21 #define ERR_UNKNOWN_CID_IN_SCAN 10
  22 #define ERR_NOT_SEQUENTIAL_DCT 11
  23 #define ERR_WRONG_MARKER 12
  24 #define ERR_NO_EOI 13
  25 #define ERR_BAD_TABLES 14
  26 #define ERR_DEPTH_MISMATCH 15
  27
  28 struct jpeg_decdata {
  29         int dcts[6 * 64 + 16];
  30         int out[64 * 6];
  31         int dquant[3][64];
  32 };
  33
  34 int jpeg_decode(unsigned char *, unsigned char *, int, int, int,
  35         struct jpeg_decdata *);
  36 void jpeg_fetch_size(unsigned char *buf, int *width, int *height);
  37 int jpeg_check_size(unsigned char *, int, int);
  38
  39 #endif