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284 lines
6.0 KiB
284 lines
6.0 KiB
/* This file is part of ksquirrel-libs (http://ksquirrel.sf.net)
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Copyright (c) 2005 Dmitry Baryshev <ksquirrel@tut.by>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation;
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either version 2 of the License, or (at your option) any later
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version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#include <iostream>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#if defined(HAVE_STDINT_H)
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#if !defined(__STDC_LIMIT_MACROS)
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#define __STDC_LIMIT_MACROS
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#endif
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#include <stdint.h>
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#endif
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#include "ksquirrel-libs/fmt_types.h"
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#include "ksquirrel-libs/fileio.h"
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#undef PACKAGE
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#undef PACKAGE_BUGREPORT
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#undef PACKAGE_NAME
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#undef PACKAGE_STRING
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#undef PACKAGE_TARNAME
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#undef PACKAGE_VERSION
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#undef VERSION
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#include <jasper/jasper.h>
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#include "fmt_codec_jpeg2000_defs.h"
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#include "fmt_codec_jpeg2000.h"
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#include "ksquirrel-libs/fmt_utils.h"
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#include "ksquirrel-libs/error.h"
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#include "../xpm/codec_jpeg2000.xpm"
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/*
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*
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* JPEG 2000 standard supports lossy and lossless compression of
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* single-component (e.g., grayscale) and multicomponent (e.g., color)
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* imagery.
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*
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*/
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fmt_codec::fmt_codec() : fmt_codec_base()
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{
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jas_init();
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}
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fmt_codec::~fmt_codec()
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{
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jas_cleanup();
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}
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void fmt_codec::options(codec_options *o)
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{
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o->version = "0.4.0";
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o->name = "JPEG 2000";
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o->filter = "*.jp2 *.j2k ";
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// mime is "....\152\120\040\040",
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// but some jp2 files don't have this mime header (why ?)
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// => o->mime is empty
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o->mime = "";
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o->mimetype = "image/jp2";
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o->config = "";
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o->pixmap = codec_jpeg2000;
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o->readable = true;
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o->canbemultiple = false;
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o->writestatic = false;
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o->writeanimated = false;
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o->needtempfile = false;
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}
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s32 fmt_codec::read_init(const std::string &file)
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{
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gs.image = 0;
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gs.altimage = 0;
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gs.data[0] = 0;
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gs.data[1] = 0;
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gs.data[2] = 0;
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in = jas_stream_fopen(file.c_str(), "rb");
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if(!in)
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return SQE_R_NOFILE;
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currentImage = -1;
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read_error = false;
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finfo.animated = false;
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return SQE_OK;
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}
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s32 fmt_codec::read_next()
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{
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currentImage++;
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if(currentImage)
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return SQE_NOTOK;
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fmt_image image;
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gs.image = jas_image_decode(in, -1, 0);
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jas_stream_close(in);
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if(!gs.image)
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return SQE_R_NOMEMORY;
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s32 family = jas_clrspc_fam(jas_image_clrspc(gs.image));
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if(!convert_colorspace())
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return SQE_R_BADFILE;
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jas_image_destroy(gs.image);
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gs.image = gs.altimage;
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gs.altimage = 0;
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image.w = jas_image_width(gs.image);
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image.h = jas_image_height(gs.image);
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switch(family)
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{
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case JAS_CLRSPC_FAM_RGB:
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image.colorspace = "RGB";
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image.bpp = 24;
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break;
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case JAS_CLRSPC_FAM_YCBCR:
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image.colorspace = "YCbCr";
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image.bpp = 24;
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break;
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case JAS_CLRSPC_FAM_GRAY:
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image.colorspace = "Grayscale";
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image.bpp = 8;
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break;
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case JAS_CLRSPC_FAM_LAB:
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image.colorspace = "LAB";
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image.bpp = 24;
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break;
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default:
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image.colorspace = "Unknown";
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image.bpp = 0;
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}
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image.compression = "JPEG2000";
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if((gs.cmptlut[0] = jas_image_getcmptbytype(gs.image, JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_R))) < 0 ||
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(gs.cmptlut[1] = jas_image_getcmptbytype(gs.image, JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_G))) < 0 ||
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(gs.cmptlut[2] = jas_image_getcmptbytype(gs.image, JAS_IMAGE_CT_COLOR(JAS_CLRSPC_CHANIND_RGB_B))) < 0)
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return SQE_R_NOMEMORY;
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const s32 *cmptlut = gs.cmptlut;
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// check that all components have the same size.
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const s32 width = jas_image_cmptwidth(gs.image, cmptlut[0]);
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const s32 height = jas_image_cmptheight(gs.image, cmptlut[0]);
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for(s32 i = 1; i < 3; ++i)
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{
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if(jas_image_cmptwidth(gs.image, cmptlut[i]) != width ||
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jas_image_cmptheight(gs.image, cmptlut[i]) != height)
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return SQE_R_BADFILE;
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}
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for(s32 i = 0;i < 3;i++)
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{
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if(!(gs.data[i] = jas_matrix_create(1, image.w)))
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return SQE_R_BADFILE;
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}
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finfo.image.push_back(image);
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line = -1;
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return SQE_OK;
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}
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s32 fmt_codec::read_next_pass()
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{
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return SQE_OK;
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}
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s32 fmt_codec::read_scanline(RGBA *scan)
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{
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fmt_image *im = image(currentImage);
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jas_seqent_t v;
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fmt_utils::fillAlpha(scan, im->w);
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line++;
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u8 *data = (u8 *)scan;
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for(s32 cmptno = 0; cmptno < 3; ++cmptno)
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{
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if(jas_image_readcmpt(gs.image, gs.cmptlut[cmptno], 0, line, im->w, 1, gs.data[cmptno]))
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return SQE_R_BADFILE;
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gs.d[cmptno] = jas_matrix_getref(gs.data[cmptno], 0, 0);
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}
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for(s32 x = 0; x < im->w;++x)
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{
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for(int k = 0; k < 3; ++k)
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{
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v = *gs.d[k];
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if(v < 0)
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v = 0;
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else if(v > 255)
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v = 255;
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*data = v;
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data++;
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++gs.d[k];
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}
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data++;
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}
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return SQE_OK;
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}
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void fmt_codec::read_close()
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{
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for(s32 cmptno = 0; cmptno < 3; ++cmptno)
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{
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if (gs.data[cmptno])
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jas_matrix_destroy(gs.data[cmptno]);
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}
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if(gs.image) jas_image_destroy(gs.image);
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if(gs.altimage) jas_image_destroy(gs.altimage);
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finfo.meta.clear();
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finfo.image.clear();
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}
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// helper method
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bool fmt_codec::convert_colorspace()
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{
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jas_cmprof_t *outprof = jas_cmprof_createfromclrspc(JAS_CLRSPC_SRGB);
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if(!outprof)
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return false;
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gs.altimage = jas_image_chclrspc(gs.image, outprof, JAS_CMXFORM_INTENT_PER);
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if(!gs.altimage)
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return false;
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jas_cmprof_destroy(outprof);
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return true;
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}
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#include "fmt_codec_cd_func.h"
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