1 /* 2 * jdmaster.h 3 * 4 * This file was part of the Independent JPEG Group's software: 5 * Copyright (C) 1991-1995, Thomas G. Lane. 6 * For conditions of distribution and use, see the accompanying README.ijg 7 * file. 8 * 9 * This file contains the master control structure for the JPEG decompressor. 10 */ 11 12 /* Private state */ 13 14 typedef struct { 15 struct jpeg_decomp_master pub; /* public fields */ 16 17 int pass_number; /* # of passes completed */ 18 19 boolean using_merged_upsample; /* TRUE if using merged upsample/cconvert */ 20 21 /* Saved references to initialized quantizer modules, 22 * in case we need to switch modes. 23 */ 24 struct jpeg_color_quantizer *quantizer_1pass; 25 struct jpeg_color_quantizer *quantizer_2pass; 26 } my_decomp_master; 27 28 typedef my_decomp_master *my_master_ptr; 29