163 lines
3.8 KiB
C++
163 lines
3.8 KiB
C++
/*
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Copyright (c) 2013 yvt
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This file is part of OpenSpades.
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OpenSpades is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenSpades 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with OpenSpades. If not, see <http://www.gnu.org/licenses/>.
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*/
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//#include "FltkImageReader.h"
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#include "IBitmapCodec.h"
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#include "Debug.h"
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#include "Exception.h"
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#include "IStream.h"
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#include "Bitmap.h"
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#include <FL/Fl_PNG_Image.H>
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#include <FL/Fl_JPEG_Image.H>
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#include <string.h>
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namespace spades {
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class FltkImageReader: public IBitmapCodec {
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public:
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virtual std::string GetName() = 0;
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virtual Fl_RGB_Image *LoadFltkImage(const std::string& data) = 0;
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virtual bool CanLoad() { return true; }
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virtual bool CanSave() { return false; }
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virtual bool CheckExtension(const std::string&) = 0;
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virtual Bitmap *Load(IStream *stream){
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SPADES_MARK_FUNCTION();
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// read all
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std::string data = stream->ReadAllBytes();
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// copy to buffer
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Fl_Image *img = LoadFltkImage(data);
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SPAssert(img);
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SPAssert(img->count() >= 1);
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const unsigned char* inPixels =
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(const unsigned char *)img->data()[0];
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int depth = img->d();
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int width = img->w();
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int height = img->h();
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int pitch = width * depth + img->ld();
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Handle<Bitmap> bmp;
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try{
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bmp = new Bitmap(width, height);
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}catch(...){
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delete img;
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throw;
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}
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try{
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unsigned char *outPixels = (unsigned char *)bmp->GetPixels();
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if(pitch == width * 4 && depth == 4){
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// if the format matches the requirement of Bitmap,
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// just use it
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memcpy(outPixels, inPixels, pitch * height);
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} else {
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// convert
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const unsigned char* line;
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for(int y = 0; y < height; y++){
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line = inPixels;
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for(int x = 0; x < width; x++){
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uint8_t r, g, b, a;
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switch(depth){
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case 1:
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r = g = b = *(line++);
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a = 255;
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break;
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case 2:
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r = g = b = *(line++);
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a = *(line++);
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break;
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case 3:
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r = *(line++);
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g = *(line++);
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b = *(line++);
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a = 255;
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break;
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case 4:
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r = *(line++);
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g = *(line++);
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b = *(line++);
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a = *(line++);
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break;
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default:
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SPAssert(false);
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}
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*(outPixels++) = r;
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*(outPixels++) = g;
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*(outPixels++) = b;
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*(outPixels++) = a;
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}
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inPixels += pitch;
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}
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}
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delete img;
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return bmp.Unmanage();
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}catch(...){
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delete img;
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throw;
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}
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}
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virtual void Save(IStream *, Bitmap *) {
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SPADES_MARK_FUNCTION();
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SPNotImplemented();
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}
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};
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class FltkPngReader: public FltkImageReader {
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public:
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virtual std::string GetName(){
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return "FLTK PNG Reader";
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}
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virtual Fl_RGB_Image *LoadFltkImage(const std::string& data) {
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return new Fl_PNG_Image(NULL, (const unsigned char *)data.data(),
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data.size());
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}
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virtual bool CheckExtension(const std::string& fn) {
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return EndsWith(fn, ".png");
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}
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} pngReader;
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class FltkJpegReader: public FltkImageReader {
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public:
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virtual std::string GetName(){
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return "FLTK JPEG Reader";
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}
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virtual Fl_RGB_Image *LoadFltkImage(const std::string& data) {
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return new Fl_JPEG_Image(NULL, (const unsigned char *)data.data());
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}
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virtual bool CheckExtension(const std::string& fn) {
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return EndsWith(fn, ".jpg") ||
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EndsWith(fn, ".jpeg") || EndsWith(fn, ".jpe");
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}
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} jpegReader;
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}
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