mirror of
https://github.com/godotengine/godot.git
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391 lines
12 KiB
C++
391 lines
12 KiB
C++
/*
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* Copyright 2015 The Etc2Comp Authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifdef _WIN32
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#define _CRT_SECURE_NO_WARNINGS (1)
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#endif
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#include "EtcConfig.h"
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#include "EtcFile.h"
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#include "EtcFileHeader.h"
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#include "EtcColor.h"
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#include "Etc.h"
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#include "EtcBlock4x4EncodingBits.h"
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#include <stdio.h>
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#include <string.h>
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#include <assert.h>
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#include <stdlib.h>
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using namespace Etc;
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// ----------------------------------------------------------------------------------------------------
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//
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File::File(const char *a_pstrFilename, Format a_fileformat, Image::Format a_imageformat,
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unsigned char *a_paucEncodingBits, unsigned int a_uiEncodingBitsBytes,
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unsigned int a_uiSourceWidth, unsigned int a_uiSourceHeight,
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unsigned int a_uiExtendedWidth, unsigned int a_uiExtendedHeight)
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{
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if (a_pstrFilename == nullptr)
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{
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m_pstrFilename = const_cast<char *>("");
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}
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else
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{
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m_pstrFilename = new char[strlen(a_pstrFilename) + 1];
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strcpy(m_pstrFilename, a_pstrFilename);
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}
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m_fileformat = a_fileformat;
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if (m_fileformat == Format::INFER_FROM_FILE_EXTENSION)
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{
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// ***** TODO: add this later *****
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m_fileformat = Format::KTX;
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}
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m_imageformat = a_imageformat;
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m_uiNumMipmaps = 1;
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m_pMipmapImages = new RawImage[m_uiNumMipmaps];
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m_pMipmapImages[0].paucEncodingBits = std::shared_ptr<unsigned char>(a_paucEncodingBits, [](unsigned char *p) { delete[] p; } );
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m_pMipmapImages[0].uiEncodingBitsBytes = a_uiEncodingBitsBytes;
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m_pMipmapImages[0].uiExtendedWidth = a_uiExtendedWidth;
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m_pMipmapImages[0].uiExtendedHeight = a_uiExtendedHeight;
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m_uiSourceWidth = a_uiSourceWidth;
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m_uiSourceHeight = a_uiSourceHeight;
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switch (m_fileformat)
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{
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case Format::PKM:
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m_pheader = new FileHeader_Pkm(this);
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break;
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case Format::KTX:
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m_pheader = new FileHeader_Ktx(this);
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break;
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default:
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assert(0);
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break;
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}
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}
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// ----------------------------------------------------------------------------------------------------
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//
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File::File(const char *a_pstrFilename, Format a_fileformat, Image::Format a_imageformat,
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unsigned int a_uiNumMipmaps, RawImage *a_pMipmapImages,
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unsigned int a_uiSourceWidth, unsigned int a_uiSourceHeight)
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{
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if (a_pstrFilename == nullptr)
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{
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m_pstrFilename = const_cast<char *>("");
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}
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else
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{
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m_pstrFilename = new char[strlen(a_pstrFilename) + 1];
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strcpy(m_pstrFilename, a_pstrFilename);
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}
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m_fileformat = a_fileformat;
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if (m_fileformat == Format::INFER_FROM_FILE_EXTENSION)
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{
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// ***** TODO: add this later *****
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m_fileformat = Format::KTX;
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}
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m_imageformat = a_imageformat;
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m_uiNumMipmaps = a_uiNumMipmaps;
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m_pMipmapImages = new RawImage[m_uiNumMipmaps];
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for(unsigned int mip = 0; mip < m_uiNumMipmaps; mip++)
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{
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m_pMipmapImages[mip] = a_pMipmapImages[mip];
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}
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m_uiSourceWidth = a_uiSourceWidth;
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m_uiSourceHeight = a_uiSourceHeight;
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switch (m_fileformat)
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{
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case Format::PKM:
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m_pheader = new FileHeader_Pkm(this);
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break;
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case Format::KTX:
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m_pheader = new FileHeader_Ktx(this);
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break;
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default:
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assert(0);
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break;
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}
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}
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// ----------------------------------------------------------------------------------------------------
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//
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File::File(const char *a_pstrFilename, Format a_fileformat)
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{
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if (a_pstrFilename == nullptr)
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{
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return;
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}
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else
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{
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m_pstrFilename = new char[strlen(a_pstrFilename) + 1];
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strcpy(m_pstrFilename, a_pstrFilename);
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}
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m_fileformat = a_fileformat;
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if (m_fileformat == Format::INFER_FROM_FILE_EXTENSION)
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{
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// ***** TODO: add this later *****
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m_fileformat = Format::KTX;
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}
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FILE *pfile = fopen(m_pstrFilename, "rb");
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if (pfile == nullptr)
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{
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printf("ERROR: Couldn't open %s", m_pstrFilename);
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exit(1);
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}
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fseek(pfile, 0, SEEK_END);
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unsigned int fileSize = ftell(pfile);
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fseek(pfile, 0, SEEK_SET);
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size_t szResult;
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m_pheader = new FileHeader_Ktx(this);
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szResult = fread( ((FileHeader_Ktx*)m_pheader)->GetData(), 1, sizeof(FileHeader_Ktx::Data), pfile);
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assert(szResult > 0);
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m_uiNumMipmaps = 1;
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m_pMipmapImages = new RawImage[m_uiNumMipmaps];
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if (((FileHeader_Ktx*)m_pheader)->GetData()->m_u32BytesOfKeyValueData > 0)
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fseek(pfile, ((FileHeader_Ktx*)m_pheader)->GetData()->m_u32BytesOfKeyValueData, SEEK_CUR);
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szResult = fread(&m_pMipmapImages->uiEncodingBitsBytes, 1, sizeof(unsigned int), pfile);
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assert(szResult > 0);
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m_pMipmapImages->paucEncodingBits = std::shared_ptr<unsigned char>(new unsigned char[m_pMipmapImages->uiEncodingBitsBytes], [](unsigned char *p) { delete[] p; } );
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assert(ftell(pfile) + m_pMipmapImages->uiEncodingBitsBytes <= fileSize);
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szResult = fread(m_pMipmapImages->paucEncodingBits.get(), 1, m_pMipmapImages->uiEncodingBitsBytes, pfile);
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assert(szResult == m_pMipmapImages->uiEncodingBitsBytes);
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uint32_t uiInternalFormat = ((FileHeader_Ktx*)m_pheader)->GetData()->m_u32GlInternalFormat;
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uint32_t uiBaseInternalFormat = ((FileHeader_Ktx*)m_pheader)->GetData()->m_u32GlBaseInternalFormat;
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if (uiInternalFormat == (uint32_t)FileHeader_Ktx::InternalFormat::ETC1_RGB8 && uiBaseInternalFormat == (uint32_t)FileHeader_Ktx::BaseInternalFormat::ETC1_RGB8)
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{
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m_imageformat = Image::Format::ETC1;
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}
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else if (uiInternalFormat == (uint32_t)FileHeader_Ktx::InternalFormat::ETC2_RGB8 && uiBaseInternalFormat == (uint32_t)FileHeader_Ktx::BaseInternalFormat::ETC2_RGB8)
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{
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m_imageformat = Image::Format::RGB8;
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}
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else if (uiInternalFormat == (uint32_t)FileHeader_Ktx::InternalFormat::ETC2_RGB8A1 && uiBaseInternalFormat == (uint32_t)FileHeader_Ktx::BaseInternalFormat::ETC2_RGB8A1)
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{
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m_imageformat = Image::Format::RGB8A1;
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}
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else if (uiInternalFormat == (uint32_t)FileHeader_Ktx::InternalFormat::ETC2_RGBA8 && uiBaseInternalFormat == (uint32_t)FileHeader_Ktx::BaseInternalFormat::ETC2_RGBA8)
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{
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m_imageformat = Image::Format::RGBA8;
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}
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else if (uiInternalFormat == (uint32_t)FileHeader_Ktx::InternalFormat::ETC2_R11 && uiBaseInternalFormat == (uint32_t)FileHeader_Ktx::BaseInternalFormat::ETC2_R11)
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{
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m_imageformat = Image::Format::R11;
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}
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else if (uiInternalFormat == (uint32_t)FileHeader_Ktx::InternalFormat::ETC2_SIGNED_R11 && uiBaseInternalFormat == (uint32_t)FileHeader_Ktx::BaseInternalFormat::ETC2_R11)
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{
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m_imageformat = Image::Format::SIGNED_R11;
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}
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else if (uiInternalFormat == (uint32_t)FileHeader_Ktx::InternalFormat::ETC2_RG11 && uiBaseInternalFormat == (uint32_t)FileHeader_Ktx::BaseInternalFormat::ETC2_RG11)
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{
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m_imageformat = Image::Format::RG11;
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}
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else if (uiInternalFormat == (uint32_t)FileHeader_Ktx::InternalFormat::ETC2_SIGNED_RG11 && uiBaseInternalFormat == (uint32_t)FileHeader_Ktx::BaseInternalFormat::ETC2_RG11)
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{
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m_imageformat = Image::Format::SIGNED_RG11;
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}
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else
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{
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m_imageformat = Image::Format::UNKNOWN;
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}
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m_uiSourceWidth = ((FileHeader_Ktx*)m_pheader)->GetData()->m_u32PixelWidth;
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m_uiSourceHeight = ((FileHeader_Ktx*)m_pheader)->GetData()->m_u32PixelHeight;
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m_pMipmapImages->uiExtendedWidth = Image::CalcExtendedDimension((unsigned short)m_uiSourceWidth);
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m_pMipmapImages->uiExtendedHeight = Image::CalcExtendedDimension((unsigned short)m_uiSourceHeight);
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unsigned int uiBlocks = m_pMipmapImages->uiExtendedWidth * m_pMipmapImages->uiExtendedHeight / 16;
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Block4x4EncodingBits::Format encodingbitsformat = Image::DetermineEncodingBitsFormat(m_imageformat);
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unsigned int expectedbytes = uiBlocks * Block4x4EncodingBits::GetBytesPerBlock(encodingbitsformat);
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assert(expectedbytes == m_pMipmapImages->uiEncodingBitsBytes);
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fclose(pfile);
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}
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File::~File()
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{
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if (m_pMipmapImages != nullptr)
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{
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delete [] m_pMipmapImages;
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}
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if(m_pstrFilename != nullptr)
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{
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delete[] m_pstrFilename;
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m_pstrFilename = nullptr;
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}
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if (m_pheader != nullptr)
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{
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delete m_pheader;
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m_pheader = nullptr;
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}
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}
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void File::UseSingleBlock(int a_iPixelX, int a_iPixelY)
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{
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if (a_iPixelX <= -1 || a_iPixelY <= -1)
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return;
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if (a_iPixelX >(int) m_uiSourceWidth)
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{
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//if we are using a ktx thats the size of a single block or less
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//then make sure we use the 4x4 image as the single block
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if (m_uiSourceWidth <= 4)
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{
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a_iPixelX = 0;
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}
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else
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{
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printf("blockAtHV: H coordinate out of range, capped to image width\n");
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a_iPixelX = m_uiSourceWidth - 1;
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}
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}
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if (a_iPixelY >(int) m_uiSourceHeight)
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{
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//if we are using a ktx thats the size of a single block or less
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//then make sure we use the 4x4 image as the single block
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if (m_uiSourceHeight <= 4)
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{
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a_iPixelY= 0;
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}
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else
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{
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printf("blockAtHV: V coordinate out of range, capped to image height\n");
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a_iPixelY = m_uiSourceHeight - 1;
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}
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}
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unsigned int origWidth = m_uiSourceWidth;
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unsigned int origHeight = m_uiSourceHeight;
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m_uiSourceWidth = 4;
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m_uiSourceHeight = 4;
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Block4x4EncodingBits::Format encodingbitsformat = Image::DetermineEncodingBitsFormat(m_imageformat);
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unsigned int uiEncodingBitsBytesPerBlock = Block4x4EncodingBits::GetBytesPerBlock(encodingbitsformat);
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int numMipmaps = 1;
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RawImage* pMipmapImages = new RawImage[numMipmaps];
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pMipmapImages[0].uiExtendedWidth = Image::CalcExtendedDimension((unsigned short)m_uiSourceWidth);
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pMipmapImages[0].uiExtendedHeight = Image::CalcExtendedDimension((unsigned short)m_uiSourceHeight);
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pMipmapImages[0].uiEncodingBitsBytes = 0;
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pMipmapImages[0].paucEncodingBits = std::shared_ptr<unsigned char>(new unsigned char[uiEncodingBitsBytesPerBlock], [](unsigned char *p) { delete[] p; });
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//block position in pixels
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// remove the bottom 2 bits to get the block coordinates
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unsigned int iBlockPosX = (a_iPixelX & 0xFFFFFFFC);
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unsigned int iBlockPosY = (a_iPixelY & 0xFFFFFFFC);
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int numXBlocks = (origWidth / 4);
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int numYBlocks = (origHeight / 4);
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// block location
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//int iBlockX = (a_iPixelX % 4) == 0 ? a_iPixelX / 4.0f : (a_iPixelX / 4) + 1;
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//int iBlockY = (a_iPixelY % 4) == 0 ? a_iPixelY / 4.0f : (a_iPixelY / 4) + 1;
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//m_paucEncodingBits += ((iBlockY * numXBlocks) + iBlockX) * uiEncodingBitsBytesPerBlock;
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unsigned int num = numXBlocks*numYBlocks;
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unsigned int uiH = 0, uiV = 0;
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unsigned char* pEncodingBits = m_pMipmapImages[0].paucEncodingBits.get();
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for (unsigned int uiBlock = 0; uiBlock < num; uiBlock++)
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{
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if (uiH == iBlockPosX && uiV == iBlockPosY)
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{
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memcpy(pMipmapImages[0].paucEncodingBits.get(),pEncodingBits, uiEncodingBitsBytesPerBlock);
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break;
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}
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pEncodingBits += uiEncodingBitsBytesPerBlock;
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uiH += 4;
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if (uiH >= origWidth)
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{
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uiH = 0;
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uiV += 4;
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}
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}
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delete [] m_pMipmapImages;
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m_pMipmapImages = pMipmapImages;
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}
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// ----------------------------------------------------------------------------------------------------
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//
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void File::Write()
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{
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FILE *pfile = fopen(m_pstrFilename, "wb");
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if (pfile == nullptr)
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{
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printf("Error: couldn't open Etc file (%s)\n", m_pstrFilename);
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exit(1);
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}
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m_pheader->Write(pfile);
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for(unsigned int mip = 0; mip < m_uiNumMipmaps; mip++)
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{
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if(m_fileformat == Format::KTX)
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{
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// Write u32 image size
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uint32_t u32ImageSize = m_pMipmapImages[mip].uiEncodingBitsBytes;
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uint32_t szBytesWritten = fwrite(&u32ImageSize, 1, sizeof(u32ImageSize), pfile);
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assert(szBytesWritten == sizeof(u32ImageSize));
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}
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unsigned int iResult = (int)fwrite(m_pMipmapImages[mip].paucEncodingBits.get(), 1, m_pMipmapImages[mip].uiEncodingBitsBytes, pfile);
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if (iResult != m_pMipmapImages[mip].uiEncodingBitsBytes)
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{
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printf("Error: couldn't write Etc file (%s)\n", m_pstrFilename);
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exit(1);
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}
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}
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fclose(pfile);
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}
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// ----------------------------------------------------------------------------------------------------
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//
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