134 lines
4.2 KiB
C++
134 lines
4.2 KiB
C++
/*
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---------------------------------------------------------------------------
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Open Asset Import Library (assimp)
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---------------------------------------------------------------------------
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Copyright (c) 2006-2022, assimp team
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All rights reserved.
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Redistribution and use of this software in source and binary forms,
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with or without modification, are permitted provided that the following
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conditions are met:
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* Redistributions of source code must retain the above
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copyright notice, this list of conditions and the
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following disclaimer.
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* Redistributions in binary form must reproduce the above
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copyright notice, this list of conditions and the
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following disclaimer in the documentation and/or other
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materials provided with the distribution.
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* Neither the name of the assimp team, nor the names of its
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contributors may be used to endorse or promote products
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derived from this software without specific prior
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written permission of the assimp team.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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---------------------------------------------------------------------------
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*/
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/** @file Bitmap.h
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* @brief Defines bitmap format helper for textures
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*
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* Used for file formats which embed their textures into the model file.
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*/
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#pragma once
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#ifndef AI_BITMAP_H_INC
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#define AI_BITMAP_H_INC
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#ifdef __GNUC__
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# pragma GCC system_header
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#endif
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#include "defs.h"
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#include <cstdint>
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#include <cstddef>
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struct aiTexture;
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namespace Assimp {
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class IOStream;
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// ---------------------------------------------------------------------------
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/**
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* This class is used to store and write bitmap information.
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*/
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class ASSIMP_API Bitmap {
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protected:
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struct Header {
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uint16_t type;
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uint32_t size;
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uint16_t reserved1;
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uint16_t reserved2;
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uint32_t offset;
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// We define the struct size because sizeof(Header) might return a wrong result because of structure padding.
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static constexpr std::size_t header_size =
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sizeof(uint16_t) +
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sizeof(uint32_t) +
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sizeof(uint16_t) +
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sizeof(uint16_t) +
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sizeof(uint32_t);
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};
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struct DIB {
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uint32_t size;
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int32_t width;
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int32_t height;
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uint16_t planes;
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uint16_t bits_per_pixel;
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uint32_t compression;
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uint32_t image_size;
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int32_t x_resolution;
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int32_t y_resolution;
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uint32_t nb_colors;
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uint32_t nb_important_colors;
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// We define the struct size because sizeof(DIB) might return a wrong result because of structure padding.
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static constexpr std::size_t dib_size =
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sizeof(uint32_t) +
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sizeof(int32_t) +
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sizeof(int32_t) +
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sizeof(uint16_t) +
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sizeof(uint16_t) +
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sizeof(uint32_t) +
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sizeof(uint32_t) +
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sizeof(int32_t) +
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sizeof(int32_t) +
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sizeof(uint32_t) +
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sizeof(uint32_t);
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};
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static constexpr std::size_t mBytesPerPixel = 4;
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public:
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/// @brief Will save an aiTexture instance as a bitmap.
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/// @param texture The pointer to the texture instance
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/// @param file The filename to save into.
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/// @return true if successfully saved, false if not.
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static bool Save(aiTexture* texture, IOStream* file);
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protected:
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static void WriteHeader(Header& header, IOStream* file);
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static void WriteDIB(DIB& dib, IOStream* file);
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static void WriteData(aiTexture* texture, IOStream* file);
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};
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}
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#endif // AI_BITMAP_H_INC
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