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395 lines
7.4 KiB
395 lines
7.4 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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as32 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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#include "ksquirrel-libs/fmt_types.h"
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#include "ksquirrel-libs/fileio.h"
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#include "ksquirrel-libs/error.h"
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#include "ksquirrel-libs/fmt_utils.h"
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#include "fmt_codec_psd_defs.h"
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#include "fmt_codec_psd.h"
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#include "../xpm/codec_psd.xpm"
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/*
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*
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* Adobe's Photoshop is probably the fullest featured and most highly
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* respected commercial image-processing bitmap manipulation program in
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* the PC and Macintosh worlds. Its wide distribution
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* has meant that image data is often left in PSD
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* format files and may persist in this form after the original image
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* data is long gone.
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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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fmt_codec::~fmt_codec()
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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 = "0.8.1";
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o->name = "Adobe Photoshop PSD";
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o->filter = "*.psd ";
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o->config = "";
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o->mime = "\x0038\x0042\x0050\x0053\x0001";
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o->mimetype = "image/psd;image/x-vnd.adobe.photoshop";
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o->pixmap = codec_psd;
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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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frs.open(file.c_str(), ios::binary | ios::in);
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if(!frs.good())
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return SQE_R_NOFILE;
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currentImage = -1;
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layer = -1;
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u32 ident;
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u16 ver;
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if(!frs.be_getlong(&ident))
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return SQE_R_BADFILE;
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if(ident != 0x38425053)
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return SQE_R_NOTSUPPORTED;
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if(!frs.be_getshort(&ver))
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return SQE_R_BADFILE;
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if(ver != 1)
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return SQE_R_BADFILE;
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last = 0;
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L = 0;
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s8 dummy[6];
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if(!frs.readK(dummy, 6)) return SQE_R_BADFILE;
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if(!frs.be_getshort(&channels))
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return SQE_R_BADFILE;
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if(!frs.be_getlong(&height))
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return SQE_R_BADFILE;
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if(!frs.be_getlong(&width))
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return SQE_R_BADFILE;
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if(!frs.be_getshort(&depth))
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return SQE_R_BADFILE;
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if(!frs.be_getshort(&mode))
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return SQE_R_BADFILE;
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if(depth != 8)
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return SQE_R_NOTSUPPORTED;
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if(mode != PSD_RGB && mode != PSD_CMYK && mode != PSD_INDEXED && mode != PSD_GRAYSCALE)
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return SQE_R_NOTSUPPORTED;
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if(mode == PSD_RGB && channels != 3 && channels != 4)
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return SQE_R_NOTSUPPORTED;
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if(mode == PSD_CMYK && channels != 4 && channels != 5)
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return SQE_R_NOTSUPPORTED;
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if(mode == PSD_INDEXED && channels != 1)
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return SQE_R_NOTSUPPORTED;
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u32 data_count;
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if(!frs.be_getlong(&data_count))
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return SQE_R_BADFILE;
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if(data_count)
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{
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if(!frs.readK(pal, 256 * sizeof(RGB))) return SQE_R_BADFILE;
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}
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if(!frs.be_getlong(&data_count))
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return SQE_R_BADFILE;
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if(data_count)
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frs.seekg(data_count, ios::cur);
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if(!frs.be_getlong(&data_count))
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return SQE_R_BADFILE;
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if(data_count)
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frs.seekg(data_count, ios::cur);
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// find out if the data is compressed
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// 0: no compressiod
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// 1: RLE compressed
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if(!frs.be_getshort(&compression))
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return SQE_R_BADFILE;
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if(compression != 1 && compression != 0)
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return SQE_R_NOTSUPPORTED;
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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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image.hasalpha = (mode == PSD_RGB) ? true : ((channels == 5) ? true : false);
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image.passes = (channels == 5) ? 4 : channels;
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image.h = height;
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image.w = width;
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if(compression)
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{
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u16 b[height * channels];
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if(!frs.readK(b, 2 * height * channels)) return SQE_R_BADFILE;
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}
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std::string type;
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switch(mode)
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{
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case PSD_RGB:
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type = "RGB";
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image.bpp = 24;
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break;
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case PSD_CMYK:
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type = "CMYK";
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image.bpp = (channels == 5) ? 32 : 24;
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break;
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case PSD_INDEXED:
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type = "Color indexed";
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image.bpp = 8;
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break;
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case PSD_GRAYSCALE:
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type = "Grayscale";
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image.bpp = 8;
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break;
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}
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last = (RGBA **)calloc(height, sizeof(RGBA*));
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if(!last)
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return SQE_R_NOMEMORY;
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const s32 S = width * sizeof(RGBA);
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for(u32 i = 0;i < height;i++)
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{
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last[i] = (RGBA*)0;
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}
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for(u32 i = 0;i < height;i++)
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{
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last[i] = (RGBA*)malloc(S);
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if(!last[i])
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return SQE_R_NOMEMORY;
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memset(last[i], 255, S);
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}
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line = -1;
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L = (u8*)calloc(width, 1);
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if(!L)
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return SQE_R_NOMEMORY;
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image.compression = ((compression) ? "RLE" : "-");
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image.colorspace = type;
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finfo.image.push_back(image);
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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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layer++;
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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_scanline(RGBA *scan)
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{
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u8 c, value, *p;
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s32 count = 0;
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fmt_image *im = image(currentImage);
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fmt_utils::fillAlpha(scan, im->w);
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line++;
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memcpy(scan, last[line], im->w * sizeof(RGBA));
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if(compression)
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{
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while(count < im->w)
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{
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if(!frs.readK(&c, 1)) return SQE_R_BADFILE;
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if(c == 128)
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{} // do nothing
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else if(c > 128)
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{
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c ^= 0xff;
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c += 2;
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if(!frs.readK(&value, 1)) return SQE_R_BADFILE;
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for(s32 i = count; i < count+c;i++)
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{
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p = (u8*)(scan+i);
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*(p+layer) = value;
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}
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count += c;
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}
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else if(c < 128)
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{
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c++;
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for(s32 i = count; i < count+c;i++)
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{
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if(!frs.readK(&value, 1)) return SQE_R_BADFILE;
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p = (u8*)(scan+i);
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*(p+layer) = value;
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}
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count += c;
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}
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}
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}
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else
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{
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if(!frs.readK(L, width)) return SQE_R_BADFILE;
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for(u32 i = 0;i < width;i++)
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{
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p = (u8*)(scan+i);
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*(p+layer) = L[i];
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}
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}
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memcpy(last[line], scan, im->w * sizeof(RGBA));
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if(layer == im->passes-1)
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{
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if(mode == PSD_CMYK)
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{
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for(s32 i = 0;i < im->w;i++)
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{
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scan[i].r = (scan[i].r * scan[i].a) >> 8;
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scan[i].g = (scan[i].g * scan[i].a) >> 8;
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scan[i].b = (scan[i].b * scan[i].a) >> 8;
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if(channels == 4)
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scan[i].a = 255;
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}
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}
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else if(mode == PSD_INDEXED)
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{
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u8 r;
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const s32 z1 = 768/3;
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const s32 z2 = z1 << 1;
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for(s32 i = 0;i < im->w;i++)
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{
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u8 *p = (u8*)pal;
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r = scan[i].r;
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(scan+i)->r = *(p+r);
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(scan+i)->g = *(p+r+z1);
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(scan+i)->b = *(p+r+z2);
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scan[i].a = 255;
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}
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}
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else if(mode == PSD_GRAYSCALE)
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{
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u8 v;
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for(s32 i = 0;i < im->w;i++)
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{
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v = scan[i].r;
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(scan+i)->r = v;
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(scan+i)->g = v;
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(scan+i)->b = v;
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scan[i].a = 255;
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}
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}
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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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frs.close();
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if(last)
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{
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for(u32 i = 0;i < height;i++)
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{
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if(last[i])
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free(last[i]);
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}
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free(last);
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}
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finfo.meta.clear();
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finfo.image.clear();
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if(L)
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free(L);
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}
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#include "fmt_codec_cd_func.h"
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