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/*
* The ManaPlus Client
* Copyright (C) 2004-2009 The Mana World Development Team
* Copyright (C) 2009-2010 The Mana Developers
* Copyright (C) 2011-2013 The ManaPlus Developers
*
* This file is part of The ManaPlus Client.
*
* This program 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
* any later version.
*
* This program 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, see <http://www.gnu.org/licenses/>.
*/
#include "resources/imagehelper.h"
#include "logger.h"
#include "main.h"
#include "utils/sdlcheckutils.h"
#include <SDL_image.h>
#include "debug.h"
ImageHelper *imageHelper = nullptr;
ImageHelper *surfaceImageHelper = nullptr;
bool ImageHelper::mEnableAlpha = true;
RenderType ImageHelper::mUseOpenGL = RENDER_SOFTWARE;
Image *ImageHelper::load(SDL_RWops *const rw) const
{
SDL_Surface *const tmpImage = loadPng(rw);
if (!tmpImage)
{
logger->log("Error, image load failed: %s", IMG_GetError());
return nullptr;
}
Image *const image = load(tmpImage);
MSDL_FreeSurface(tmpImage);
return image;
}
SDL_Surface* ImageHelper::convertTo32Bit(SDL_Surface *const tmpImage)
{
if (!tmpImage)
return nullptr;
SDL_PixelFormat RGBAFormat;
RGBAFormat.palette = nullptr;
#ifndef USE_SDL2
RGBAFormat.colorkey = 0;
RGBAFormat.alpha = 0;
#endif
RGBAFormat.BitsPerPixel = 32;
RGBAFormat.BytesPerPixel = 4;
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
RGBAFormat.Rmask = 0xFF000000;
RGBAFormat.Rshift = 0;
RGBAFormat.Rloss = 0;
RGBAFormat.Gmask = 0x00FF0000;
RGBAFormat.Gshift = 8;
RGBAFormat.Gloss = 0;
RGBAFormat.Bmask = 0x0000FF00;
RGBAFormat.Bshift = 16;
RGBAFormat.Bloss = 0;
RGBAFormat.Amask = 0x000000FF;
RGBAFormat.Ashift = 24;
RGBAFormat.Aloss = 0;
#else
RGBAFormat.Rmask = 0x000000FF;
RGBAFormat.Rshift = 24;
RGBAFormat.Rloss = 0;
RGBAFormat.Gmask = 0x0000FF00;
RGBAFormat.Gshift = 16;
RGBAFormat.Gloss = 0;
RGBAFormat.Bmask = 0x00FF0000;
RGBAFormat.Bshift = 8;
RGBAFormat.Bloss = 0;
RGBAFormat.Amask = 0xFF000000;
RGBAFormat.Ashift = 0;
RGBAFormat.Aloss = 0;
#endif
return MSDL_ConvertSurface(tmpImage, &RGBAFormat, SDL_SWSURFACE);
}
void ImageHelper::dumpSurfaceFormat(const SDL_Surface *const image) const
{
if (image->format)
{
const SDL_PixelFormat * const format = image->format;
logger->log("Bytes per pixel: %d", format->BytesPerPixel);
#ifndef USE_SDL2
logger->log("Alpha: %d", format->alpha);
#endif
logger->log("Loss: %02x, %02x, %02x, %02x",
static_cast<int>(format->Rloss), static_cast<int>(format->Gloss),
static_cast<int>(format->Bloss), static_cast<int>(format->Aloss));
logger->log("Shift: %02x, %02x, %02x, %02x",
static_cast<int>(format->Rshift), static_cast<int>(format->Gshift),
static_cast<int>(format->Bshift),
static_cast<int>(format->Ashift));
logger->log("Mask: %08x, %08x, %08x, %08x", format->Rmask,
format->Gmask, format->Bmask, format->Amask);
}
}
SDL_Surface *ImageHelper::loadPng(SDL_RWops *const rw)
{
if (!rw)
return nullptr;
if (!IMG_isPNG(rw))
{
logger->log("Error, image is not png");
SDL_RWclose(rw);
return nullptr;
}
SDL_Surface *const tmpImage = MIMG_LoadPNG_RW(rw);
SDL_RWclose(rw);
return tmpImage;
}
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