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Diffstat (limited to 'thirdparty/etc2comp/EtcFileHeader.cpp')
| -rw-r--r-- | thirdparty/etc2comp/EtcFileHeader.cpp | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/thirdparty/etc2comp/EtcFileHeader.cpp b/thirdparty/etc2comp/EtcFileHeader.cpp new file mode 100644 index 0000000000..f02fcab011 --- /dev/null +++ b/thirdparty/etc2comp/EtcFileHeader.cpp @@ -0,0 +1,185 @@ +/* + * Copyright 2015 The Etc2Comp Authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include "EtcFileHeader.h" + +#include "EtcBlock4x4EncodingBits.h" + +#include <assert.h> + +namespace Etc +{ + + // ---------------------------------------------------------------------------------------------------- + // + FileHeader_Pkm::FileHeader_Pkm(File *a_pfile) + { + m_pfile = a_pfile; + + static const char s_acMagicNumberData[4] = { 'P', 'K', 'M', ' ' }; + static const char s_acVersionData[2] = { '1', '0' }; + + for (unsigned int ui = 0; ui < sizeof(s_acMagicNumberData); ui++) + { + m_data.m_acMagicNumber[ui] = s_acMagicNumberData[ui]; + } + + for (unsigned int ui = 0; ui < sizeof(s_acVersionData); ui++) + { + m_data.m_acVersion[ui] = s_acVersionData[ui]; + } + + m_data.m_ucDataType_msb = 0; // ETC1_RGB_NO_MIPMAPS + m_data.m_ucDataType_lsb = 0; + + m_data.m_ucOriginalWidth_msb = (unsigned char)(m_pfile->GetSourceWidth() >> 8); + m_data.m_ucOriginalWidth_lsb = m_pfile->GetSourceWidth() & 0xFF; + m_data.m_ucOriginalHeight_msb = (unsigned char)(m_pfile->GetSourceHeight() >> 8); + m_data.m_ucOriginalHeight_lsb = m_pfile->GetSourceHeight() & 0xFF; + + m_data.m_ucExtendedWidth_msb = (unsigned char)(m_pfile->GetExtendedWidth() >> 8); + m_data.m_ucExtendedWidth_lsb = m_pfile->GetExtendedWidth() & 0xFF; + m_data.m_ucExtendedHeight_msb = (unsigned char)(m_pfile->GetExtendedHeight() >> 8); + m_data.m_ucExtendedHeight_lsb = m_pfile->GetExtendedHeight() & 0xFF; + + } + + // ---------------------------------------------------------------------------------------------------- + // + void FileHeader_Pkm::Write(FILE *a_pfile) + { + + fwrite(&m_data, sizeof(Data), 1, a_pfile); + + } + + // ---------------------------------------------------------------------------------------------------- + // + FileHeader_Ktx::FileHeader_Ktx(File *a_pfile) + { + m_pfile = a_pfile; + + static const uint8_t s_au8Itentfier[12] = + { + 0xAB, 0x4B, 0x54, 0x58, // first four bytes of Byte[12] identifier + 0x20, 0x31, 0x31, 0xBB, // next four bytes of Byte[12] identifier + 0x0D, 0x0A, 0x1A, 0x0A // final four bytes of Byte[12] identifier + }; + + for (unsigned int ui = 0; ui < sizeof(s_au8Itentfier); ui++) + { + m_data.m_au8Identifier[ui] = s_au8Itentfier[ui]; + } + + m_data.m_u32Endianness = 0x04030201; + m_data.m_u32GlType = 0; + m_data.m_u32GlTypeSize = 1; + m_data.m_u32GlFormat = 0; + + switch (m_pfile->GetImageFormat()) + { + case Image::Format::RGB8: + case Image::Format::SRGB8: + m_data.m_u32GlInternalFormat = (unsigned int)InternalFormat::ETC2_RGB8; + m_data.m_u32GlBaseInternalFormat = (unsigned int)BaseInternalFormat::ETC2_RGB8; + break; + + case Image::Format::RGBA8: + case Image::Format::SRGBA8: + m_data.m_u32GlInternalFormat = (unsigned int)InternalFormat::ETC2_RGBA8; + m_data.m_u32GlBaseInternalFormat = (unsigned int)BaseInternalFormat::ETC2_RGBA8; + break; + + case Image::Format::RGB8A1: + case Image::Format::SRGB8A1: + m_data.m_u32GlInternalFormat = (unsigned int)InternalFormat::ETC2_RGB8A1; + m_data.m_u32GlBaseInternalFormat = (unsigned int)BaseInternalFormat::ETC2_RGB8A1; + break; + + case Image::Format::R11: + m_data.m_u32GlInternalFormat = (unsigned int)InternalFormat::ETC2_R11; + m_data.m_u32GlBaseInternalFormat = (unsigned int)BaseInternalFormat::ETC2_R11; + break; + + case Image::Format::SIGNED_R11: + m_data.m_u32GlInternalFormat = (unsigned int)InternalFormat::ETC2_SIGNED_R11; + m_data.m_u32GlBaseInternalFormat = (unsigned int)BaseInternalFormat::ETC2_R11; + break; + + case Image::Format::RG11: + m_data.m_u32GlInternalFormat = (unsigned int)InternalFormat::ETC2_RG11; + m_data.m_u32GlBaseInternalFormat = (unsigned int)BaseInternalFormat::ETC2_RG11; + break; + + case Image::Format::SIGNED_RG11: + m_data.m_u32GlInternalFormat = (unsigned int)InternalFormat::ETC2_SIGNED_RG11; + m_data.m_u32GlBaseInternalFormat = (unsigned int)BaseInternalFormat::ETC2_RG11; + break; + + default: + m_data.m_u32GlInternalFormat = (unsigned int)InternalFormat::ETC1_RGB8; + m_data.m_u32GlBaseInternalFormat = (unsigned int)BaseInternalFormat::ETC1_RGB8; + break; + } + + m_data.m_u32PixelWidth = 0; + m_data.m_u32PixelHeight = 0; + m_data.m_u32PixelDepth = 0; + m_data.m_u32NumberOfArrayElements = 0; + m_data.m_u32NumberOfFaces = 0; + m_data.m_u32BytesOfKeyValueData = 0; + + m_pkeyvaluepair = nullptr; + + m_u32Images = 0; + m_u32KeyValuePairs = 0; + + m_data.m_u32PixelWidth = m_pfile->GetSourceWidth(); + m_data.m_u32PixelHeight = m_pfile->GetSourceHeight(); + m_data.m_u32PixelDepth = 0; + m_data.m_u32NumberOfArrayElements = 0; + m_data.m_u32NumberOfFaces = 1; + m_data.m_u32NumberOfMipmapLevels = m_pfile->GetNumMipmaps(); + + } + + // ---------------------------------------------------------------------------------------------------- + // + void FileHeader_Ktx::Write(FILE *a_pfile) + { + size_t szBytesWritten; + + // Write header + szBytesWritten = fwrite(&m_data, 1, sizeof(Data), a_pfile); + assert(szBytesWritten == sizeof(Data)); + + // Write KeyAndValuePairs + if (m_u32KeyValuePairs) + { + fwrite(m_pkeyvaluepair, m_pkeyvaluepair->u32KeyAndValueByteSize, 1, a_pfile); + } + } + + // ---------------------------------------------------------------------------------------------------- + // + FileHeader_Ktx::Data *FileHeader_Ktx::GetData() + { + return &m_data; + } + + // ---------------------------------------------------------------------------------------------------- + // +} // namespace Etc |