diff options
author | Jake Petroules <jake.petroules@petroules.com> | 2014-01-06 08:34:32 -0500 |
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committer | The Qt Project <gerrit-noreply@qt-project.org> | 2014-01-30 08:31:17 +0100 |
commit | 38c2411fa82975ba41039ea583c46aeb4b4cde61 (patch) | |
tree | 00d1ec15f219a693d2a92ae13ec8b5010b7a7528 /src/3rdparty/jasper/src/libjasper/ras/ras_dec.c | |
parent | 7c857090304c1d3cb052ca275ea40af5ea0652fb (diff) |
Import a copy of JasPer 1.900.1 for use by the JPEG 2000 plugin.
Change-Id: I85348aa66f8c3c145bbfd125f557d6a247046d8f
Reviewed-by: Konstantin Ritt <ritt.ks@gmail.com>
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Diffstat (limited to 'src/3rdparty/jasper/src/libjasper/ras/ras_dec.c')
-rw-r--r-- | src/3rdparty/jasper/src/libjasper/ras/ras_dec.c | 398 |
1 files changed, 398 insertions, 0 deletions
diff --git a/src/3rdparty/jasper/src/libjasper/ras/ras_dec.c b/src/3rdparty/jasper/src/libjasper/ras/ras_dec.c new file mode 100644 index 0000000..ebae2b6 --- /dev/null +++ b/src/3rdparty/jasper/src/libjasper/ras/ras_dec.c @@ -0,0 +1,398 @@ +/* + * Copyright (c) 1999-2000 Image Power, Inc. and the University of + * British Columbia. + * Copyright (c) 2001-2003 Michael David Adams. + * All rights reserved. + */ + +/* __START_OF_JASPER_LICENSE__ + * + * JasPer License Version 2.0 + * + * Copyright (c) 2001-2006 Michael David Adams + * Copyright (c) 1999-2000 Image Power, Inc. + * Copyright (c) 1999-2000 The University of British Columbia + * + * All rights reserved. + * + * Permission is hereby granted, free of charge, to any person (the + * "User") obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without restriction, + * including without limitation the rights to use, copy, modify, merge, + * publish, distribute, and/or sell copies of the Software, and to permit + * persons to whom the Software is furnished to do so, subject to the + * following conditions: + * + * 1. The above copyright notices and this permission notice (which + * includes the disclaimer below) shall be included in all copies or + * substantial portions of the Software. + * + * 2. The name of a copyright holder shall not be used to endorse or + * promote products derived from the Software without specific prior + * written permission. + * + * THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS + * LICENSE. NO USE OF THE SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER + * THIS DISCLAIMER. THE SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS + * "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING + * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A + * PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. IN NO + * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL + * INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING + * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, + * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION + * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. NO ASSURANCES ARE + * PROVIDED BY THE COPYRIGHT HOLDERS THAT THE SOFTWARE DOES NOT INFRINGE + * THE PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OF ANY OTHER ENTITY. + * EACH COPYRIGHT HOLDER DISCLAIMS ANY LIABILITY TO THE USER FOR CLAIMS + * BROUGHT BY ANY OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL + * PROPERTY RIGHTS OR OTHERWISE. AS A CONDITION TO EXERCISING THE RIGHTS + * GRANTED HEREUNDER, EACH USER HEREBY ASSUMES SOLE RESPONSIBILITY TO SECURE + * ANY OTHER INTELLECTUAL PROPERTY RIGHTS NEEDED, IF ANY. THE SOFTWARE + * IS NOT FAULT-TOLERANT AND IS NOT INTENDED FOR USE IN MISSION-CRITICAL + * SYSTEMS, SUCH AS THOSE USED IN THE OPERATION OF NUCLEAR FACILITIES, + * AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL + * SYSTEMS, DIRECT LIFE SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH + * THE FAILURE OF THE SOFTWARE OR SYSTEM COULD LEAD DIRECTLY TO DEATH, + * PERSONAL INJURY, OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH + * RISK ACTIVITIES"). THE COPYRIGHT HOLDERS SPECIFICALLY DISCLAIM ANY + * EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES. + * + * __END_OF_JASPER_LICENSE__ + */ + +/* + * Sun Rasterfile Library + * + * $Id$ + */ + +/******************************************************************************\ +* Includes. +\******************************************************************************/ + +#include <assert.h> +#include <stdlib.h> + +#include "jasper/jas_stream.h" +#include "jasper/jas_image.h" +#include "jasper/jas_debug.h" + +#include "ras_cod.h" + +/******************************************************************************\ +* Prototypes. +\******************************************************************************/ + +static int ras_gethdr(jas_stream_t *in, ras_hdr_t *hdr); +static int ras_getint(jas_stream_t *in, int_fast32_t *val); + +static int ras_getdata(jas_stream_t *in, ras_hdr_t *hdr, ras_cmap_t *cmap, + jas_image_t *image); +static int ras_getdatastd(jas_stream_t *in, ras_hdr_t *hdr, ras_cmap_t *cmap, + jas_image_t *image); +static int ras_getcmap(jas_stream_t *in, ras_hdr_t *hdr, ras_cmap_t *cmap); + +/******************************************************************************\ +* Code. +\******************************************************************************/ + +jas_image_t *ras_decode(jas_stream_t *in, char *optstr) +{ + ras_hdr_t hdr; + ras_cmap_t cmap; + jas_image_t *image; + jas_image_cmptparm_t cmptparms[3]; + jas_image_cmptparm_t *cmptparm; + int clrspc; + int numcmpts; + int i; + + if (optstr) { + jas_eprintf("warning: ignoring RAS decoder options\n"); + } + + /* Read the header. */ + if (ras_gethdr(in, &hdr)) { + return 0; + } + + /* Does the header information look reasonably sane? */ + if (hdr.magic != RAS_MAGIC || hdr.width <= 0 || hdr.height <= 0 || + hdr.depth <= 0 || hdr.depth > 32) { + return 0; + } + + /* In the case of the old format, do not rely on the length field + being properly specified. Calculate the quantity from scratch. */ + if (hdr.type == RAS_TYPE_OLD) { + hdr.length = RAS_ROWSIZE(&hdr) * hdr.height; + } + + /* Calculate some quantities needed for creation of the image + object. */ + if (RAS_ISRGB(&hdr)) { + clrspc = JAS_CLRSPC_SRGB; + numcmpts = 3; + } else { + clrspc = JAS_CLRSPC_SGRAY; + numcmpts = 1; + } + for (i = 0, cmptparm = cmptparms; i < numcmpts; ++i, ++cmptparm) { + cmptparm->tlx = 0; + cmptparm->tly = 0; + cmptparm->hstep = 1; + cmptparm->vstep = 1; + cmptparm->width = hdr.width; + cmptparm->height = hdr.height; + cmptparm->prec = RAS_ISRGB(&hdr) ? 8 : hdr.depth; + cmptparm->sgnd = false; + } + /* Create the image object. */ + if (!(image = jas_image_create(numcmpts, cmptparms, JAS_CLRSPC_UNKNOWN))) { + return 0; + } + + /* Read the color map (if there is one). */ + if (ras_getcmap(in, &hdr, &cmap)) { + jas_image_destroy(image); + return 0; + } + + /* Read the pixel data. */ + if (ras_getdata(in, &hdr, &cmap, image)) { + jas_image_destroy(image); + return 0; + } + + jas_image_setclrspc(image, clrspc); + if (clrspc == JAS_CLRSPC_SRGB) { + jas_image_setcmpttype(image, 0, + JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_R)); + jas_image_setcmpttype(image, 1, + JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_G)); + jas_image_setcmpttype(image, 2, + JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_B)); + } else { + jas_image_setcmpttype(image, 0, + JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_GRAY_Y)); + } + + return image; +} + +int ras_validate(jas_stream_t *in) +{ + uchar buf[RAS_MAGICLEN]; + int i; + int n; + uint_fast32_t magic; + + assert(JAS_STREAM_MAXPUTBACK >= RAS_MAGICLEN); + + /* Read the validation data (i.e., the data used for detecting + the format). */ + if ((n = jas_stream_read(in, buf, RAS_MAGICLEN)) < 0) { + return -1; + } + + /* Put the validation data back onto the stream, so that the + stream position will not be changed. */ + for (i = n - 1; i >= 0; --i) { + if (jas_stream_ungetc(in, buf[i]) == EOF) { + return -1; + } + } + + /* Did we read enough data? */ + if (n < RAS_MAGICLEN) { + return -1; + } + + magic = (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3]; + + /* Is the signature correct for the Sun Rasterfile format? */ + if (magic != RAS_MAGIC) { + return -1; + } + return 0; +} + +static int ras_getdata(jas_stream_t *in, ras_hdr_t *hdr, ras_cmap_t *cmap, + jas_image_t *image) +{ + int ret; + + switch (hdr->type) { + case RAS_TYPE_OLD: + case RAS_TYPE_STD: + ret = ras_getdatastd(in, hdr, cmap, image); + break; + case RAS_TYPE_RLE: + jas_eprintf("error: RLE encoding method not supported\n"); + ret = -1; + break; + default: + jas_eprintf("error: encoding method not supported\n"); + ret = -1; + break; + } + return ret; +} + +static int ras_getdatastd(jas_stream_t *in, ras_hdr_t *hdr, ras_cmap_t *cmap, + jas_image_t *image) +{ + int pad; + int nz; + int z; + int c; + int y; + int x; + int v; + int i; + jas_matrix_t *data[3]; + +/* Note: This function does not properly handle images with a colormap. */ + /* Avoid compiler warnings about unused parameters. */ + cmap = 0; + + for (i = 0; i < jas_image_numcmpts(image); ++i) { + data[i] = jas_matrix_create(1, jas_image_width(image)); + assert(data[i]); + } + + pad = RAS_ROWSIZE(hdr) - (hdr->width * hdr->depth + 7) / 8; + + for (y = 0; y < hdr->height; y++) { + nz = 0; + z = 0; + for (x = 0; x < hdr->width; x++) { + while (nz < hdr->depth) { + if ((c = jas_stream_getc(in)) == EOF) { + return -1; + } + z = (z << 8) | c; + nz += 8; + } + + v = (z >> (nz - hdr->depth)) & RAS_ONES(hdr->depth); + z &= RAS_ONES(nz - hdr->depth); + nz -= hdr->depth; + + if (jas_image_numcmpts(image) == 3) { + jas_matrix_setv(data[0], x, (RAS_GETRED(v))); + jas_matrix_setv(data[1], x, (RAS_GETGREEN(v))); + jas_matrix_setv(data[2], x, (RAS_GETBLUE(v))); + } else { + jas_matrix_setv(data[0], x, (v)); + } + } + if (pad) { + if ((c = jas_stream_getc(in)) == EOF) { + return -1; + } + } + for (i = 0; i < jas_image_numcmpts(image); ++i) { + if (jas_image_writecmpt(image, i, 0, y, hdr->width, 1, + data[i])) { + return -1; + } + } + } + + for (i = 0; i < jas_image_numcmpts(image); ++i) { + jas_matrix_destroy(data[i]); + } + + return 0; +} + +static int ras_getcmap(jas_stream_t *in, ras_hdr_t *hdr, ras_cmap_t *cmap) +{ + int i; + int j; + int x; + int c; + int numcolors; + int actualnumcolors; + + switch (hdr->maptype) { + case RAS_MT_NONE: + break; + case RAS_MT_EQUALRGB: + { + jas_eprintf("warning: palettized images not fully supported\n"); + numcolors = 1 << hdr->depth; + assert(numcolors <= RAS_CMAP_MAXSIZ); + actualnumcolors = hdr->maplength / 3; + for (i = 0; i < numcolors; i++) { + cmap->data[i] = 0; + } + if ((hdr->maplength % 3) || hdr->maplength < 0 || + hdr->maplength > 3 * numcolors) { + return -1; + } + for (i = 0; i < 3; i++) { + for (j = 0; j < actualnumcolors; j++) { + if ((c = jas_stream_getc(in)) == EOF) { + return -1; + } + x = 0; + switch (i) { + case 0: + x = RAS_RED(c); + break; + case 1: + x = RAS_GREEN(c); + break; + case 2: + x = RAS_BLUE(c); + break; + } + cmap->data[j] |= x; + } + } + } + break; + default: + return -1; + break; + } + + return 0; +} + +static int ras_gethdr(jas_stream_t *in, ras_hdr_t *hdr) +{ + if (ras_getint(in, &hdr->magic) || ras_getint(in, &hdr->width) || + ras_getint(in, &hdr->height) || ras_getint(in, &hdr->depth) || + ras_getint(in, &hdr->length) || ras_getint(in, &hdr->type) || + ras_getint(in, &hdr->maptype) || ras_getint(in, &hdr->maplength)) { + return -1; + } + + if (hdr->magic != RAS_MAGIC) { + return -1; + } + + return 0; +} + +static int ras_getint(jas_stream_t *in, int_fast32_t *val) +{ + int x; + int c; + int i; + + x = 0; + for (i = 0; i < 4; i++) { + if ((c = jas_stream_getc(in)) == EOF) { + return -1; + } + x = (x << 8) | (c & 0xff); + } + + *val = x; + return 0; +} |