godot/drivers/jpg/image_loader_jpg.cpp
2014-02-09 22:10:30 -03:00

94 lines
2.0 KiB
C++

/*************************************************/
/* image_loader_jpg.cpp */
/*************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/*************************************************/
/* Source code within this file is: */
/* (c) 2007-2010 Juan Linietsky, Ariel Manzur */
/* All Rights Reserved. */
/*************************************************/
#include "image_loader_jpg.h"
#include "print_string.h"
#include "os/os.h"
#include "drivers/jpg/tinyjpeg.h"
static void* _tinyjpg_alloc(unsigned int amount) {
return memalloc(amount);
}
static void _tinyjpg_free(void *ptr) {
memfree(ptr);
}
Error ImageLoaderJPG::load_image(Image *p_image,FileAccess *f) {
DVector<uint8_t> src_image;
int src_image_len = f->get_len();
ERR_FAIL_COND_V(src_image_len == 0, ERR_FILE_CORRUPT);
src_image.resize(src_image_len);
DVector<uint8_t>::Write w = src_image.write();
f->get_buffer(&w[0],src_image_len);
f->close();
jdec_private* jdec=tinyjpeg_init(_tinyjpg_alloc,_tinyjpg_free);
ERR_FAIL_COND_V(!jdec,ERR_UNAVAILABLE);
int ret = tinyjpeg_parse_header(jdec,&w[0],src_image_len);
if (ret!=0) {
tinyjpeg_free(jdec);
}
ERR_FAIL_COND_V(ret!=0,ERR_FILE_CORRUPT);
unsigned int width,height;
tinyjpeg_get_size(jdec,&width,&height);
DVector<uint8_t> imgdata;
imgdata.resize(width*height*3);
DVector<uint8_t>::Write imgdataw = imgdata.write();
unsigned char *components[1]={&imgdataw[0]};
tinyjpeg_set_components(jdec,components,1);
tinyjpeg_decode(jdec,TINYJPEG_FMT_RGB24);
imgdataw = DVector<uint8_t>::Write();
Image dst_image(width,height,0,Image::FORMAT_RGB,imgdata);
tinyjpeg_free(jdec);
*p_image=dst_image;
return OK;
}
void ImageLoaderJPG::get_recognized_extensions(List<String> *p_extensions) const {
p_extensions->push_back("jpg");
p_extensions->push_back("jpeg");
}
ImageLoaderJPG::ImageLoaderJPG() {
}