1 /* Copyright (C) 1999 Aladdin Enterprises. All rights reserved. 2 3 This file is part of AFPL Ghostscript. 4 5 AFPL Ghostscript is distributed with NO WARRANTY OF ANY KIND. No author or 6 distributor accepts any responsibility for the consequences of using it, or 7 for whether it serves any particular purpose or works at all, unless he or 8 she says so in writing. Refer to the Aladdin Free Public License (the 9 "License") for full details. 10 11 Every copy of AFPL Ghostscript must include a copy of the License, normally 12 in a plain ASCII text file named PUBLIC. The License grants you the right 13 to copy, modify and redistribute AFPL Ghostscript, but only under certain 14 conditions described in the License. Among other things, the License 15 requires that the copyright notice and this notice be preserved on all 16 copies. 17 */ 18 19 /*$Id: gdevmrun.h,v 1.2 2000/09/19 19:00:14 lpd Exp $ */ 20 /* Definition of run-length encoded memory device */ 21 22 #ifndef gdevmrun_INCLUDED 23 # define gdevmrun_INCLUDED 24 25 /* 26 * This memory device stores full-size pixels with run-length 27 * encoding if possible, switching to the standard uncompressed 28 * representation if necessary. 29 */ 30 31 #include "gxdevmem.h" 32 33 /* 34 * Define the device, built on a memory device. 35 */ 36 typedef struct gx_device_run_s { 37 gx_device_memory md; /* must be first */ 38 uint runs_per_line; 39 int umin, umax1; /* some range of uninitialized lines */ 40 int smin, smax1; /* some range in standard (not run) form */ 41 /* 42 * Save memory device procedures that we replace with run-oriented 43 * ones, for use with the uncompressed representation. 44 */ 45 struct sp_ { 46 dev_proc_copy_mono((*copy_mono)); 47 dev_proc_copy_color((*copy_color)); 48 dev_proc_fill_rectangle((*fill_rectangle)); 49 dev_proc_copy_alpha((*copy_alpha)); 50 dev_proc_strip_tile_rectangle((*strip_tile_rectangle)); 51 dev_proc_strip_copy_rop((*strip_copy_rop)); 52 dev_proc_get_bits_rectangle((*get_bits_rectangle)); 53 } save_procs; 54 } gx_device_run; 55 56 /* 57 * Convert a memory device to run-length form. The mdev argument should be 58 * const, but it isn't because we need to call gx_device_white. 59 */ 60 int gdev_run_from_mem(P2(gx_device_run *rdev, gx_device_memory *mdev)); 61 62 #endif /* gdevmrun_INCLUDED */ 63