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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-indent-level: 8; c-basic-offset: 8 -*- */
/*
* Copyright (C) 2003 Remi Cohen-Scali
*
* Author:
* Remi Cohen-Scali <Remi@Cohen-Scali.com>
*
* GPdf is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* GPdf is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
* License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*/
#include <aconf.h>
#include <string.h>
#ifdef USE_GCC_PRAGMAS
#pragma implementation
#endif
#include <gpdf-g-switch.h>
# include <glib.h>
#include <gpdf-g-switch.h>
#include "gmem.h"
#include "Object.h"
#include "Gfx.h"
#include "GfxState.h"
#include "Thumb.h"
/*
* Thumb
*/
Thumb::Thumb(XRef *xrefA, Object *obj) :
xref(xrefA),
str(NULL),
ok_flag(0)
{
Object obj1, obj2;
Dict *dict;
GfxColorSpace *colorSpace;
do {
/* Get stream dict */
dict = obj->streamGetDict ();
str = obj->getStream();
/* Get width */
dict->lookup ("Width", &obj1);
if (obj1.isNull ())
{
obj1.free ();
dict->lookup ("W", &obj1);
}
if (!obj1.isInt ()) {
fprintf (stderr, "Error: Invalid Width object %s\n",
obj1.getTypeName ());
obj1.free ();
break;
}
width = obj1.getInt ();
obj1.free ();
/* Get heigth */
dict->lookup ("Height", &obj1);
if (obj1.isNull ())
{
obj1.free ();
dict->lookup ("H", &obj1);
}
if (!obj1.isInt ()) {
fprintf (stderr, "Error: Invalid Height object %s\n",
obj1.getTypeName ());
obj1.free ();
break;
}
height = obj1.getInt ();
obj1.free ();
/* bit depth */
dict->lookup ("BitsPerComponent", &obj1);
if (obj1.isNull ())
{
obj1.free ();
dict->lookup ("BPC", &obj1);
}
if (!obj1.isInt ()) {
fprintf (stderr, "Error: Invalid BitsPerComponent object %s\n",
obj1.getTypeName ());
obj1.free ();
break;
}
bits = obj1.getInt ();
obj1.free ();
/* Get color space */
dict->lookup ("ColorSpace", &obj1);
if (obj1.isNull ())
{
obj1.free ();
dict->lookup ("CS", &obj1);
}
colorSpace = GfxColorSpace::parse(&obj1);
obj1.free();
if (!colorSpace) {
fprintf (stderr, "Error: Cannot parse color space\n");
break;
}
dict->lookup("Decode", &obj1);
if (obj1.isNull()) {
obj1.free();
dict->lookup("D", &obj1);
}
colorMap = new GfxImageColorMap(bits, &obj1, colorSpace);
obj1.free();
if (!colorMap->isOk()) {
fprintf (stderr, "Error: invalid colormap\n");
delete colorMap;
colorMap = NULL;
}
dict->lookup ("Length", &obj1);
if (!obj1.isInt ()) {
fprintf (stderr, "Error: Invalid Length Object %s\n",
obj1.getTypeName ());
obj1.free ();
break;
}
length = obj1.getInt ();
obj1.free ();
str->addFilters(obj);
ok_flag = 1;
}
while (0);
}
unsigned char *
Thumb::getPixbufData()
{
ImageStream *imgstr;
unsigned char *pixbufdata;
unsigned int pixbufdatasize;
int row, col;
unsigned char *p;
/* RGB Pixbuf data */
pixbufdatasize = width * height * 3;
if (colorMap) {
pixbufdata =(unsigned char *)g_malloc(pixbufdatasize);
} else {
pixbufdata =(unsigned char *)g_malloc0(pixbufdatasize);
return pixbufdata;
}
p = pixbufdata;
imgstr = new ImageStream(str, width, colorMap->getNumPixelComps(), colorMap->getBits());
imgstr->reset();
for (row = 0; row < height; ++row) {
for (col = 0; col < width; ++col) {
Guchar pix[gfxColorMaxComps];
GfxRGB rgb;
imgstr->getPixel(pix);
colorMap->getRGB(pix, &rgb);
*p++ = (guchar)(rgb.r * 255.99999);
*p++ = (guchar)(rgb.g * 255.99999);
*p++ = (guchar)(rgb.b * 255.99999);
}
}
delete imgstr;
return pixbufdata;
}
Thumb::~Thumb() {
delete colorMap;
delete str;
}
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