Rename and move loaders, expose parsers

Former-commit-id: 932ae2aab020f956d3fdb91107f6842ff292aa08

src/Nazara/Utility/Formats/DDSLoader.cpp

@@ -0,0 +1,123 @@
+// Copyright (C) 2015 Jérôme Leclercq - 2009 Cruden BV
+// This file is part of the "Nazara Engine - Utility module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#include <Nazara/Utility/Formats/DDSLoader.hpp>
+#include <Nazara/Core/Endianness.hpp>
+#include <Nazara/Core/Error.hpp>
+#include <Nazara/Core/InputStream.hpp>
+#include <Nazara/Utility/Image.hpp>
+#include <Nazara/Utility/Formats/DDSConstants.hpp>
+#include <memory>
+#include <Nazara/Utility/Debug.hpp>
+
+namespace
+{
+	bool IsSupported(const NzString& extension)
+	{
+		return (extension == "dds");
+	}
+
+	nzTernary Check(NzInputStream& stream, const NzImageParams& parameters)
+	{
+		NazaraUnused(parameters);
+
+		nzUInt32 magic;
+		if (stream.Read(&magic, sizeof(nzUInt32)) == sizeof(nzUInt32))
+		{
+			#ifdef NAZARA_BIG_ENDIAN
+			NzByteSwap(&magic, sizeof(nzUInt32));
+			#endif
+
+			if (magic == DDS_MAGIC)
+				return nzTernary_True;
+		}
+
+		return nzTernary_False;
+	}
+
+	bool Load(NzImage* image, NzInputStream& stream, const NzImageParams& parameters)
+	{
+		NazaraUnused(parameters);
+
+		DDSHeader header;
+		if (stream.Read(&header, sizeof(DDSHeader)) != sizeof(DDSHeader))
+		{
+			NazaraError("Failed to read DDS header");
+			return false;
+		}
+
+		DDSHeaderDX10Ext headerDX10;
+		if (header.format.flags & DDPF_FOURCC && header.format.fourCC == D3DFMT_DX10)
+		{
+			if (stream.Read(&headerDX10, sizeof(DDSHeaderDX10Ext)) != sizeof(DDSHeaderDX10Ext))
+			{
+				NazaraError("Failed to read DDS DX10 extension header");
+				return false;
+			}
+		}
+		else
+		{
+			headerDX10.arraySize = 1;
+			headerDX10.dxgiFormat = DXGI_FORMAT_UNKNOWN;
+			headerDX10.miscFlag = 0;
+			headerDX10.resourceDimension = D3D10_RESOURCE_DIMENSION_UNKNOWN;
+		}
+
+		#ifdef NAZARA_BIG_ENDIAN
+		// Les fichiers DDS sont en little endian
+		NzByteSwap(&header.size, sizeof(nzUInt32));
+		NzByteSwap(&header.flags, sizeof(nzUInt32));
+		NzByteSwap(&header.height, sizeof(nzUInt32));
+		NzByteSwap(&header.width, sizeof(nzUInt32));
+		NzByteSwap(&header.pitch, sizeof(nzUInt32));
+		NzByteSwap(&header.depth, sizeof(nzUInt32));
+		NzByteSwap(&header.levelCount, sizeof(nzUInt32));
+
+		// DDS_PixelFormat
+		NzByteSwap(&header.format.size, sizeof(nzUInt32));
+		NzByteSwap(&header.format.flags, sizeof(nzUInt32));
+		NzByteSwap(&header.format.fourCC, sizeof(nzUInt32));
+		NzByteSwap(&header.format.bpp, sizeof(nzUInt32));
+		NzByteSwap(&header.format.redMask, sizeof(nzUInt32));
+		NzByteSwap(&header.format.greenMask, sizeof(nzUInt32));
+		NzByteSwap(&header.format.blueMask, sizeof(nzUInt32));
+		NzByteSwap(&header.format.alphaMask, sizeof(nzUInt32));
+
+		NzByteSwap(&header.ddsCaps1, sizeof(nzUInt32));
+		NzByteSwap(&header.ddsCaps2, sizeof(nzUInt32));
+		NzByteSwap(&header.ddsCaps3, sizeof(nzUInt32));
+		NzByteSwap(&header.ddsCaps4, sizeof(nzUInt32));
+		#endif
+
+		unsigned int width = header.width;
+		unsigned int height = header.height;
+		unsigned int depth = std::max(header.depth, 1U);
+		unsigned int levelCount = (parameters.levelCount > 0) ? std::min(parameters.levelCount, static_cast<nzUInt8>(header.levelCount)) : header.levelCount;
+
+		// Détermination du type
+		nzImageType type;
+		if (header.ddsCaps2 & DDSCAPS2_CUBEMAP)
+			type = nzImageType_Cubemap;
+		else if (header.ddsCaps2 & DDSCAPS2_VOLUME)
+			type = nzImageType_3D;
+
+		// Détermination du format
+		nzPixelFormat format;
+
+		if (parameters.loadFormat != nzPixelFormat_Undefined)
+			image->Convert(parameters.loadFormat);
+
+		return true;
+	}
+}
+
+void NzLoaders_DDS_Register()
+{
+	NzImageLoader::RegisterLoader(IsSupported, Check, Load);
+}
+
+void NzLoaders_DDS_Unregister()
+{
+	NzImageLoader::UnregisterLoader(IsSupported, Check, Load);
+}