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