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Update test program.

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This commit is contained in:
Ernie Pasveer
2022-10-29 12:27:10 -05:00
parent de8571fd85
commit 2ea1fffb07
2 changed files with 19 additions and 30 deletions
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tests/helloimage/helloimage.cpp
+18 -29
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@@ -2,46 +2,35 @@
#include <iostream>
#include <fstream>
#include <filesystem>
#include <QtGui/QImageReader>
#include <QtCore/QDebug>
int main (int argc, char** argv) {
std::cout << "Hello, Image!" << std::endl;
// Allocate and read BMP
std::uintmax_t filesize_bmp = std::filesystem::file_size("lena.bmp");
QImageReader reader("lena.bmp");
reader.setAutoTransform(true);
char* buffer_bmp = (char*)malloc(filesize_bmp);
std::ifstream fin_bmp("lena.bmp", std::ios::in | std::ios::binary );
if (!fin_bmp) {
std::cout << "Can't open BMP file." << std::endl;
return 1;
QImage image = reader.read();
if (image.isNull()) {
return false;
}
fin_bmp.read(buffer_bmp, filesize_bmp);
QImage image_rgb = image.convertToFormat(QImage::Format_RGB888);
QImage image_rgba = image.convertToFormat(QImage::Format_RGBA8888);
int n_bmp = fin_bmp.gcount();
qDebug() << image;
qDebug() << image_rgb;
qDebug() << image_rgba;
// Allocate and read PNG
std::uintmax_t filesize_png = std::filesystem::file_size("lena.png");
// QImage(QSize(512, 512),format=QImage::Format_Indexed8,depth=8,colorCount=256,devicePixelRatio=1,bytesPerLine=512,sizeInBytes=262144)
// QImage(QSize(512, 512),format=QImage::Format_RGB888,depth=24,devicePixelRatio=1,bytesPerLine=1536,sizeInBytes=786432)
// QImage(QSize(512, 512),format=QImage::Format_RGBA8888,depth=32,devicePixelRatio=1,bytesPerLine=2048,sizeInBytes=1048576)
char* buffer_png = (char*)malloc(filesize_png);
std::ifstream fin_png("lena.png", std::ios::in | std::ios::binary );
if (!fin_png) {
std::cout << "Can't open PNG file." << std::endl;
return 1;
}
fin_png.read(buffer_png, filesize_png);
int n_png = fin_png.gcount();
// Free things
free(buffer_bmp);
free(buffer_png);
const uchar* bits = image.bits();
const uchar* bits_rgb = image_rgb.bits();
const uchar* bits_rgba = image_rgba.bits();
return 0;
}