dolphin/Source/Core/DiscIO/Src/BannerLoaderGC.cpp

193 lines
3.8 KiB
C++

// Copyright (C) 2003-2008 Dolphin Project.
// 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, version 2.0.
// 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 2.0 for more details.
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
// Official SVN repository and contact information can be found at
// http://code.google.com/p/dolphin-emu/
#include "stdafx.h"
#include "BannerLoaderGC.h"
namespace DiscIO
{
CBannerLoaderGC::CBannerLoaderGC(DiscIO::IFileSystem& _rFileSystem)
: m_pBannerFile(NULL),
m_IsValid(false)
{
// build LUT Table
for (int i = 0; i < 8; i++)
{
lut3to8[i] = (i * 255) / 7;
}
for (int i = 0; i < 16; i++)
{
lut4to8[i] = (i * 255) / 15;
}
for (int i = 0; i < 32; i++)
{
lut5to8[i] = (i * 255) / 31;
}
// load the opening.bnr
size_t FileSize = _rFileSystem.GetFileSize("opening.bnr");
if (FileSize > 0)
{
m_pBannerFile = new u8[FileSize];
_rFileSystem.ReadFile("opening.bnr", m_pBannerFile, FileSize);
m_IsValid = true;
}
}
CBannerLoaderGC::~CBannerLoaderGC()
{
delete[] m_pBannerFile;
}
bool
CBannerLoaderGC::IsValid()
{
return(m_IsValid);
}
bool
CBannerLoaderGC::GetBanner(u32* _pBannerImage)
{
if (!IsValid())
{
return(false);
}
DVDBanner2* pBanner = (DVDBanner2*)m_pBannerFile;
decode5A3image(_pBannerImage, pBanner->image, DVD_BANNER_WIDTH, DVD_BANNER_HEIGHT);
return(true);
}
bool
CBannerLoaderGC::GetName(std::string& _rName, int language)
{
_rName = "invalid image";
if (!IsValid())
{
return(false);
}
DVDBanner2* pBanner = (DVDBanner2*)m_pBannerFile;
if (!CopyToStringAndCheck(_rName, language != 0 ? pBanner->comment[0].shortTitle : pBanner->comment[0].longTitle))
{
return(false);
}
return(true);
}
bool
CBannerLoaderGC::GetCompany(std::string& _rCompany)
{
_rCompany = "invalid images";
if (!IsValid())
{
return(false);
}
DVDBanner2* pBanner = (DVDBanner2*)m_pBannerFile;
if (!CopyToStringAndCheck(_rCompany, pBanner->comment[0].shortMaker))
{
return(false);
}
return(true);
}
bool
CBannerLoaderGC::GetDescription(std::string& _rDescription)
{
_rDescription = "invalid images";
if (!IsValid())
{
return(false);
}
DVDBanner2* pBanner = (DVDBanner2*)m_pBannerFile;
if (!CopyToStringAndCheck(_rDescription, pBanner->comment[0].comment))
{
_rDescription = "";
}
return(true);
}
u32
CBannerLoaderGC::decode5A3(u16 val)
{
u32 bannerBGColor = 0x00000000;
int r, g, b, a;
if ((val & 0x8000))
{
r = lut5to8[(val >> 10) & 0x1f];
g = lut5to8[(val >> 5) & 0x1f];
b = lut5to8[(val) & 0x1f];
a = 0xFF;
}
else
{
a = lut3to8[(val >> 12) & 0x7];
r = (lut4to8[(val >> 8) & 0xf] * a + (bannerBGColor & 0xFF) * (255 - a)) / 255;
g = (lut4to8[(val >> 4) & 0xf] * a + ((bannerBGColor >> 8) & 0xFF) * (255 - a)) / 255;
b = (lut4to8[(val) & 0xf] * a + ((bannerBGColor >> 16) & 0xFF) * (255 - a)) / 255;
a = 0xFF;
}
return((a << 24) | (r << 16) | (g << 8) | b);
}
void
CBannerLoaderGC::decode5A3image(u32* dst, u16* src, int width, int height)
{
for (int y = 0; y < height; y += 4)
{
for (int x = 0; x < width; x += 4)
{
for (int iy = 0; iy < 4; iy++, src += 4)
{
for (int ix = 0; ix < 4; ix++)
{
u32 RGBA = decode5A3(Common::swap16(src[ix]));
dst[(y + iy) * 96 + (x + ix)] = RGBA;
}
}
}
}
}
} // namespace