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244 lines
9.1 KiB
244 lines
9.1 KiB
/* |
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This file is part of Magnum. |
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Copyright © 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019 |
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Vladimír Vondruš <mosra@centrum.cz> |
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Permission is hereby granted, free of charge, to any person obtaining a |
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copy of this software and associated documentation files (the "Software"), |
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to deal in the Software without restriction, including without limitation |
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the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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and/or sell copies of the Software, and to permit persons to whom the |
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Software is furnished to do so, subject to the following conditions: |
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The above copyright notice and this permission notice shall be included |
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in all copies or substantial portions of the Software. |
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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DEALINGS IN THE SOFTWARE. |
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*/ |
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#include "PixelFormat.h" |
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#include <string> |
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#include <Corrade/Containers/ArrayView.h> |
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#include <Corrade/Utility/Assert.h> |
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#include <Corrade/Utility/Debug.h> |
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#include "Magnum/Math/Vector3.h" |
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namespace Magnum { |
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UnsignedInt pixelSize(const PixelFormat format) { |
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CORRADE_ASSERT(!isPixelFormatImplementationSpecific(format), |
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"pixelSize(): can't determine size of an implementation-specific format" << reinterpret_cast<void*>(pixelFormatUnwrap(format)), {}); |
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#ifdef __GNUC__ |
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#pragma GCC diagnostic push |
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#pragma GCC diagnostic error "-Wswitch" |
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#endif |
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switch(format) { |
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case PixelFormat::R8Unorm: |
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case PixelFormat::R8Snorm: |
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case PixelFormat::R8Srgb: |
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case PixelFormat::R8UI: |
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case PixelFormat::R8I: |
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return 1; |
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case PixelFormat::RG8Unorm: |
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case PixelFormat::RG8Snorm: |
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case PixelFormat::RG8Srgb: |
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case PixelFormat::RG8UI: |
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case PixelFormat::RG8I: |
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case PixelFormat::R16Unorm: |
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case PixelFormat::R16Snorm: |
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case PixelFormat::R16UI: |
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case PixelFormat::R16I: |
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case PixelFormat::R16F: |
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return 2; |
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case PixelFormat::RGB8Unorm: |
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case PixelFormat::RGB8Snorm: |
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case PixelFormat::RGB8Srgb: |
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case PixelFormat::RGB8UI: |
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case PixelFormat::RGB8I: |
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return 3; |
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case PixelFormat::RGBA8Unorm: |
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case PixelFormat::RGBA8Snorm: |
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case PixelFormat::RGBA8Srgb: |
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case PixelFormat::RGBA8UI: |
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case PixelFormat::RGBA8I: |
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case PixelFormat::RG16Unorm: |
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case PixelFormat::RG16Snorm: |
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case PixelFormat::RG16UI: |
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case PixelFormat::RG16I: |
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case PixelFormat::RG16F: |
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case PixelFormat::R32UI: |
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case PixelFormat::R32I: |
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case PixelFormat::R32F: |
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return 4; |
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case PixelFormat::RGB16Unorm: |
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case PixelFormat::RGB16Snorm: |
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case PixelFormat::RGB16UI: |
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case PixelFormat::RGB16I: |
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case PixelFormat::RGB16F: |
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return 6; |
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case PixelFormat::RGBA16Unorm: |
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case PixelFormat::RGBA16Snorm: |
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case PixelFormat::RGBA16UI: |
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case PixelFormat::RGBA16I: |
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case PixelFormat::RGBA16F: |
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case PixelFormat::RG32UI: |
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case PixelFormat::RG32I: |
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case PixelFormat::RG32F: |
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return 8; |
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case PixelFormat::RGB32UI: |
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case PixelFormat::RGB32I: |
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case PixelFormat::RGB32F: |
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return 12; |
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case PixelFormat::RGBA32UI: |
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case PixelFormat::RGBA32I: |
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case PixelFormat::RGBA32F: |
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return 16; |
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} |
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#ifdef __GNUC__ |
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#pragma GCC diagnostic pop |
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#endif |
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CORRADE_ASSERT(false, "pixelSize(): invalid format" << format, {}); |
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} |
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namespace { |
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#ifndef DOXYGEN_GENERATING_OUTPUT /* It gets *really* confused */ |
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constexpr const char* PixelFormatNames[] { |
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#define _c(format) #format, |
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#include "Magnum/Implementation/pixelFormatMapping.hpp" |
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#undef _c |
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}; |
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#endif |
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} |
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#ifndef DOXYGEN_GENERATING_OUTPUT |
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Debug& operator<<(Debug& debug, const PixelFormat value) { |
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debug << "PixelFormat" << Debug::nospace; |
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if(isPixelFormatImplementationSpecific(value)) { |
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return debug << "::ImplementationSpecific(" << Debug::nospace << reinterpret_cast<void*>(pixelFormatUnwrap(value)) << Debug::nospace << ")"; |
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} |
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if(UnsignedInt(value) - 1 < Containers::arraySize(PixelFormatNames)) { |
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return debug << "::" << Debug::nospace << PixelFormatNames[UnsignedInt(value) - 1]; |
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} |
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return debug << "(" << Debug::nospace << reinterpret_cast<void*>(UnsignedInt(value)) << Debug::nospace << ")"; |
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} |
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#endif |
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namespace { |
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#ifndef DOXYGEN_GENERATING_OUTPUT /* It gets *really* confused */ |
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constexpr const char* CompressedPixelFormatNames[] { |
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#define _c(format, width, height, depth, size) #format, |
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#include "Magnum/Implementation/compressedPixelFormatMapping.hpp" |
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#undef _c |
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}; |
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constexpr UnsignedShort CompressedBlockData[] { |
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/* Assuming w/h/d/s is never larger than 16 (and never zero), each number |
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has 1 subtracted and packed into four bits, 16 bits in total. The size |
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is supplied in bits, so first divide by eight and then subtract 1. For |
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the currently ~100 supported formats that makes this table to be about |
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256 bytes.*/ |
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#define _c(format, width, height, depth, size) \ |
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((width - 1) << 12) | \ |
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((height - 1) << 8) | \ |
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((depth - 1) << 4) | \ |
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((size >> 3) - 1), |
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#include "Magnum/Implementation/compressedPixelFormatMapping.hpp" |
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#undef _c |
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}; |
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#endif |
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} |
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Vector3i compressedBlockSize(const CompressedPixelFormat format) { |
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CORRADE_ASSERT(!(UnsignedInt(format) & (1 << 31)), |
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"compressedBlockSize(): can't determine size of an implementation-specific format" << reinterpret_cast<void*>(compressedPixelFormatUnwrap(format)), {}); |
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CORRADE_ASSERT(UnsignedInt(format) - 1 < Containers::arraySize(CompressedBlockData), |
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"compressedBlockSize(): invalid format" << format, {}); |
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const UnsignedInt data = CompressedBlockData[UnsignedInt(format) - 1]; |
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return { |
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(Int(data >> 12) & 0xf) + 1, |
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(Int(data >> 8) & 0xf) + 1, |
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(Int(data >> 4) & 0xf) + 1, |
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}; |
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} |
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UnsignedInt compressedBlockDataSize(const CompressedPixelFormat format) { |
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CORRADE_ASSERT(!(UnsignedInt(format) & (1 << 31)), |
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"compressedBlockDataSize(): can't determine size of an implementation-specific format" << reinterpret_cast<void*>(compressedPixelFormatUnwrap(format)), {}); |
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CORRADE_ASSERT(UnsignedInt(format) - 1 < Containers::arraySize(CompressedBlockData), |
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"compressedBlockDataSize(): invalid format" << format, {}); |
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return (CompressedBlockData[UnsignedInt(format) - 1] & 0xf) + 1; |
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} |
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#ifndef DOXYGEN_GENERATING_OUTPUT |
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Debug& operator<<(Debug& debug, const CompressedPixelFormat value) { |
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debug << "CompressedPixelFormat" << Debug::nospace; |
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if(isCompressedPixelFormatImplementationSpecific(value)) { |
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return debug << "::ImplementationSpecific(" << Debug::nospace << reinterpret_cast<void*>(compressedPixelFormatUnwrap(value)) << Debug::nospace << ")"; |
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} |
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if(UnsignedInt(value) - 1 < Containers::arraySize(CompressedPixelFormatNames)) { |
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return debug << "::" << Debug::nospace << CompressedPixelFormatNames[UnsignedInt(value) - 1]; |
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} |
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return debug << "(" << Debug::nospace << reinterpret_cast<void*>(UnsignedInt(value)) << Debug::nospace << ")"; |
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} |
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#endif |
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} |
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namespace Corrade { namespace Utility { |
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std::string ConfigurationValue<Magnum::PixelFormat>::toString(Magnum::PixelFormat value, ConfigurationValueFlags) { |
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if(Magnum::UnsignedInt(value) - 1 < Containers::arraySize(Magnum::PixelFormatNames)) |
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return Magnum::PixelFormatNames[Magnum::UnsignedInt(value) - 1]; |
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return {}; |
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} |
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Magnum::PixelFormat ConfigurationValue<Magnum::PixelFormat>::fromString(const std::string& stringValue, ConfigurationValueFlags) { |
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/** @todo This is extremely slow with >100 values. Do a binary search on a |
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sorted index list instead (extracted into a common utility) */ |
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for(std::size_t i = 0; i != Containers::arraySize(Magnum::PixelFormatNames); ++i) |
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if(stringValue == Magnum::PixelFormatNames[i]) return Magnum::PixelFormat(i + 1); |
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return {}; |
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} |
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std::string ConfigurationValue<Magnum::CompressedPixelFormat>::toString(Magnum::CompressedPixelFormat value, ConfigurationValueFlags) { |
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if(Magnum::UnsignedInt(value) - 1 < Containers::arraySize(Magnum::CompressedPixelFormatNames)) |
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return Magnum::CompressedPixelFormatNames[Magnum::UnsignedInt(value) - 1]; |
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return {}; |
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} |
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Magnum::CompressedPixelFormat ConfigurationValue<Magnum::CompressedPixelFormat>::fromString(const std::string& stringValue, ConfigurationValueFlags) { |
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/** @todo This is extremely slow with >100 values. Do a binary search on a |
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sorted index list instead (extracted into a common utility) */ |
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for(std::size_t i = 0; i != Containers::arraySize(Magnum::CompressedPixelFormatNames); ++i) |
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if(stringValue == Magnum::CompressedPixelFormatNames[i]) return Magnum::CompressedPixelFormat(i + 1); |
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return {}; |
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} |
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}}
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