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Remove BMP image support (#15434)

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Co-authored-by: Lars Mueller <appgurulars@gmx.de>
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sfan5 2024-11-15 12:21:30 +01:00 • committed by GitHub
parent 46f0baff09
commit 11837d4623
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11 changed files with 6 additions and 713 deletions
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87
irr/src/CColorConverter.cpp
View file

@ -12,93 +12,6 @@ namespace irr
namespace video
{
//! converts a monochrome bitmap to A1R5G5B5 data
void CColorConverter::convert1BitTo16Bit(const u8 *in, s16 *out, s32 width, s32 height, s32 linepad, bool flip)
{
if (!in || !out)
return;
if (flip)
out += width * height;
for (s32 y = 0; y < height; ++y) {
s32 shift = 7;
if (flip)
out -= width;
for (s32 x = 0; x < width; ++x) {
out[x] = *in >> shift & 0x01 ? (s16)0xffff : (s16)0x8000;
if ((--shift) < 0) { // 8 pixel done
shift = 7;
++in;
}
}
if (shift != 7) // width did not fill last byte
++in;
if (!flip)
out += width;
in += linepad;
}
}
//! converts a 4 bit palettized image to A1R5G5B5
void CColorConverter::convert4BitTo16Bit(const u8 *in, s16 *out, s32 width, s32 height, const s32 *palette, s32 linepad, bool flip)
{
if (!in || !out || !palette)
return;
if (flip)
out += width * height;
for (s32 y = 0; y < height; ++y) {
s32 shift = 4;
if (flip)
out -= width;
for (s32 x = 0; x < width; ++x) {
out[x] = X8R8G8B8toA1R5G5B5(palette[(u8)((*in >> shift) & 0xf)]);
if (shift == 0) {
shift = 4;
++in;
} else
shift = 0;
}
if (shift == 0) // odd width
++in;
if (!flip)
out += width;
in += linepad;
}
}
//! converts a 8 bit palettized image into A1R5G5B5
void CColorConverter::convert8BitTo16Bit(const u8 *in, s16 *out, s32 width, s32 height, const s32 *palette, s32 linepad, bool flip)
{
if (!in || !out || !palette)
return;
if (flip)
out += width * height;
for (s32 y = 0; y < height; ++y) {
if (flip)
out -= width; // one line back
for (s32 x = 0; x < width; ++x) {
out[x] = X8R8G8B8toA1R5G5B5(palette[(u8)(*in)]);
++in;
}
if (!flip)
out += width;
in += linepad;
}
}
//! converts a 8 bit palettized or non palettized image (A8) into R8G8B8
void CColorConverter::convert8BitTo24Bit(const u8 *in, u8 *out, s32 width, s32 height, const u8 *palette, s32 linepad, bool flip)
{

8
irr/src/CColorConverter.h
View file

@ -15,14 +15,6 @@ namespace video
class CColorConverter
{
public:
//! converts a monochrome bitmap to A1R5G5B5
static void convert1BitTo16Bit(const u8 *in, s16 *out, s32 width, s32 height, s32 linepad = 0, bool flip = false);
//! converts a 4 bit palettized image to A1R5G5B5
static void convert4BitTo16Bit(const u8 *in, s16 *out, s32 width, s32 height, const s32 *palette, s32 linepad = 0, bool flip = false);
//! converts a 8 bit palettized image to A1R5G5B5
static void convert8BitTo16Bit(const u8 *in, s16 *out, s32 width, s32 height, const s32 *palette, s32 linepad = 0, bool flip = false);
//! converts a 8 bit palettized or non palettized image (A8) into R8G8B8
static void convert8BitTo24Bit(const u8 *in, u8 *out, s32 width, s32 height, const u8 *palette, s32 linepad = 0, bool flip = false);

402
irr/src/CImageLoaderBMP.cpp
View file

@ -1,402 +0,0 @@
// Copyright (C) 2002-2012 Nikolaus Gebhardt
// This file is part of the "Irrlicht Engine".
// For conditions of distribution and use, see copyright notice in irrlicht.h
#include "CImageLoaderBMP.h"
#include "IReadFile.h"
#include "SColor.h"
#include "CColorConverter.h"
#include "CImage.h"
#include "coreutil.h"
#include "os.h"
namespace irr
{
namespace video
{
//! constructor
CImageLoaderBMP::CImageLoaderBMP()
{
#ifdef _DEBUG
setDebugName("CImageLoaderBMP");
#endif
}
//! returns true if the file maybe is able to be loaded by this class
//! based on the file extension (e.g. ".tga")
bool CImageLoaderBMP::isALoadableFileExtension(const io::path &filename) const
{
return core::hasFileExtension(filename, "bmp");
}
//! returns true if the file maybe is able to be loaded by this class
bool CImageLoaderBMP::isALoadableFileFormat(io::IReadFile *file) const
{
u16 headerID;
file->read(&headerID, sizeof(u16));
#ifdef __BIG_ENDIAN__
headerID = os::Byteswap::byteswap(headerID);
#endif
return headerID == 0x4d42;
}
// UB-safe overflow check
static inline bool overflowCheck(const void *base, size_t offset, const void *end)
{
auto baseI = reinterpret_cast<uintptr_t>(base),
endI = reinterpret_cast<uintptr_t>(end);
return baseI > endI || offset >= (endI - baseI);
}
// check whether &p[0] to &p[_off - 1] can be accessed
#define CHECKP(_off) \
if ((_off) < 0 || overflowCheck(p, _off, pEnd)) \
goto exit
// same for d
#define CHECKD(_off) \
if ((_off) < 0 || overflowCheck(d, _off, destEnd)) \
goto exit
void CImageLoaderBMP::decompress8BitRLE(u8 *&bmpData, s32 size, s32 width, s32 height, s32 pitch) const
{
u8 *p = bmpData;
const u8 *pEnd = bmpData + size;
u8 *newBmp = new u8[(width + pitch) * height];
u8 *d = newBmp;
const u8 *destEnd = newBmp + (width + pitch) * height;
s32 line = 0;
while (p < pEnd && d < destEnd) {
if (*p == 0) {
++p;
CHECKP(1);
switch (*p) {
case 0: // end of line
++p;
++line;
d = newBmp + (line * (width + pitch));
break;
case 1: // end of bmp
goto exit;
case 2:
++p;
CHECKP(2);
d += (u8)*p;
++p; // delta
d += ((u8)*p) * (width + pitch);
++p;
break;
default: {
// absolute mode
s32 count = (u8)*p;
++p;
s32 readAdditional = ((2 - (count % 2)) % 2);
CHECKP(count);
CHECKD(count);
for (s32 i = 0; i < count; ++i) {
*d = *p;
++p;
++d;
}
CHECKP(readAdditional);
for (s32 i = 0; i < readAdditional; ++i)
++p;
}
}
} else {
s32 count = (u8)*p;
++p;
CHECKP(1);
u8 color = *p;
++p;
CHECKD(count);
for (s32 i = 0; i < count; ++i) {
*d = color;
++d;
}
}
}
exit:
delete[] bmpData;
bmpData = newBmp;
}
// how many bytes will be touched given the current state of decompress4BitRLE
static inline u32 shiftedCount(s32 count, s32 shift)
{
_IRR_DEBUG_BREAK_IF(count < 0)
u32 ret = count / 2;
if (shift == 0 || count % 2 == 1)
++ret;
return ret;
}
void CImageLoaderBMP::decompress4BitRLE(u8 *&bmpData, s32 size, s32 width, s32 height, s32 pitch) const
{
const s32 lineWidth = (width + 1) / 2 + pitch;
u8 *p = bmpData;
const u8 *pEnd = bmpData + size;
u8 *newBmp = new u8[lineWidth * height];
u8 *d = newBmp;
const u8 *destEnd = newBmp + lineWidth * height;
s32 line = 0;
s32 shift = 4;
while (p < pEnd && d < destEnd) {
if (*p == 0) {
++p;
CHECKP(1);
switch (*p) {
case 0: // end of line
++p;
++line;
d = newBmp + (line * lineWidth);
shift = 4;
break;
case 1: // end of bmp
goto exit;
case 2: {
++p;
CHECKP(2);
s32 x = (u8)*p;
++p;
s32 y = (u8)*p;
++p;
d += x / 2 + y * lineWidth;
shift = x % 2 == 0 ? 4 : 0;
} break;
default: {
// absolute mode
s32 count = (u8)*p;
++p;
s32 readAdditional = ((2 - ((count) % 2)) % 2);
s32 readShift = 4;
CHECKP(shiftedCount(count, readShift));
CHECKD(shiftedCount(count, shift));
for (s32 i = 0; i < count; ++i) {
s32 color = (((u8)*p) >> readShift) & 0x0f;
readShift -= 4;
if (readShift < 0) {
++*p; // <- bug?
readShift = 4;
}
u8 mask = 0x0f << shift;
*d = (*d & (~mask)) | ((color << shift) & mask);
shift -= 4;
if (shift < 0) {
shift = 4;
++d;
}
}
CHECKP(readAdditional);
for (s32 i = 0; i < readAdditional; ++i)
++p;
}
}
} else {
s32 count = (u8)*p;
++p;
CHECKP(1);
s32 color1 = (u8)*p;
color1 = color1 & 0x0f;
s32 color2 = (u8)*p;
color2 = (color2 >> 4) & 0x0f;
++p;
CHECKD(shiftedCount(count, shift));
for (s32 i = 0; i < count; ++i) {
u8 mask = 0x0f << shift;
u8 toSet = (shift == 0 ? color1 : color2) << shift;
*d = (*d & (~mask)) | (toSet & mask);
shift -= 4;
if (shift < 0) {
shift = 4;
++d;
}
}
}
}
exit:
delete[] bmpData;
bmpData = newBmp;
}
#undef CHECKOFF
#undef CHECKP
#undef CHECKD
//! creates a surface from the file
IImage *CImageLoaderBMP::loadImage(io::IReadFile *file) const
{
SBMPHeader header;
file->read(&header, sizeof(header));
#ifdef __BIG_ENDIAN__
header.Id = os::Byteswap::byteswap(header.Id);
header.FileSize = os::Byteswap::byteswap(header.FileSize);
header.BitmapDataOffset = os::Byteswap::byteswap(header.BitmapDataOffset);
header.BitmapHeaderSize = os::Byteswap::byteswap(header.BitmapHeaderSize);
header.Width = os::Byteswap::byteswap(header.Width);
header.Height = os::Byteswap::byteswap(header.Height);
header.Planes = os::Byteswap::byteswap(header.Planes);
header.BPP = os::Byteswap::byteswap(header.BPP);
header.Compression = os::Byteswap::byteswap(header.Compression);
header.BitmapDataSize = os::Byteswap::byteswap(header.BitmapDataSize);
header.PixelPerMeterX = os::Byteswap::byteswap(header.PixelPerMeterX);
header.PixelPerMeterY = os::Byteswap::byteswap(header.PixelPerMeterY);
header.Colors = os::Byteswap::byteswap(header.Colors);
header.ImportantColors = os::Byteswap::byteswap(header.ImportantColors);
#endif
s32 pitch = 0;
//! return if the header is false
if (header.Id != 0x4d42)
return 0;
if (header.Compression > 2) { // we'll only handle RLE-Compression
os::Printer::log("Compression mode not supported.", ELL_ERROR);
return 0;
}
if (header.BPP > 32 || !checkImageDimensions(header.Width, header.Height)) {
os::Printer::log("Rejecting BMP with unreasonable size or BPP.", ELL_ERROR);
return 0;
}
// adjust bitmap data size to dword boundary
header.BitmapDataSize += (4 - (header.BitmapDataSize % 4)) % 4;
// read palette
long pos = file->getPos();
constexpr s32 paletteAllocSize = 256;
s32 paletteSize = (header.BitmapDataOffset - pos) / 4;
paletteSize = core::clamp(paletteSize, 0, paletteAllocSize);
s32 *paletteData = 0;
if (paletteSize) {
// always allocate an 8-bit palette to ensure enough space
paletteData = new s32[paletteAllocSize];
memset(paletteData, 0, paletteAllocSize * sizeof(s32));
file->read(paletteData, paletteSize * sizeof(s32));
#ifdef __BIG_ENDIAN__
for (s32 i = 0; i < paletteSize; ++i)
paletteData[i] = os::Byteswap::byteswap(paletteData[i]);
#endif
}
// read image data
if (!header.BitmapDataSize) {
// okay, lets guess the size
// some tools simply don't set it
header.BitmapDataSize = static_cast<u32>(file->getSize()) - header.BitmapDataOffset;
}
file->seek(header.BitmapDataOffset);
s32 widthInBytes;
{
f32 t = (header.Width) * (header.BPP / 8.0f);
widthInBytes = (s32)t;
t -= widthInBytes;
if (t != 0.0f)
++widthInBytes;
}
const s32 lineSize = widthInBytes + ((4 - (widthInBytes % 4))) % 4;
pitch = lineSize - widthInBytes;
u8 *bmpData = new u8[header.BitmapDataSize];
file->read(bmpData, header.BitmapDataSize);
// decompress data if needed
switch (header.Compression) {
case 1: // 8 bit rle
decompress8BitRLE(bmpData, header.BitmapDataSize, header.Width, header.Height, pitch);
header.BitmapDataSize = (header.Width + pitch) * header.Height;
break;
case 2: // 4 bit rle
decompress4BitRLE(bmpData, header.BitmapDataSize, header.Width, header.Height, pitch);
header.BitmapDataSize = ((header.Width + 1) / 2 + pitch) * header.Height;
break;
}
if (header.BitmapDataSize < lineSize * header.Height) {
os::Printer::log("Bitmap data is cut off.", ELL_ERROR);
delete[] paletteData;
delete[] bmpData;
return 0;
}
// create surface
core::dimension2d<u32> dim;
dim.Width = header.Width;
dim.Height = header.Height;
IImage *image = 0;
switch (header.BPP) {
case 1:
image = new CImage(ECF_A1R5G5B5, dim);
if (image)
CColorConverter::convert1BitTo16Bit(bmpData, (s16 *)image->getData(), header.Width, header.Height, pitch, true);
break;
case 4:
image = new CImage(ECF_A1R5G5B5, dim);
if (image)
CColorConverter::convert4BitTo16Bit(bmpData, (s16 *)image->getData(), header.Width, header.Height, paletteData, pitch, true);
break;
case 8:
image = new CImage(ECF_A1R5G5B5, dim);
if (image)
CColorConverter::convert8BitTo16Bit(bmpData, (s16 *)image->getData(), header.Width, header.Height, paletteData, pitch, true);
break;
case 16:
image = new CImage(ECF_A1R5G5B5, dim);
if (image)
CColorConverter::convert16BitTo16Bit((s16 *)bmpData, (s16 *)image->getData(), header.Width, header.Height, pitch, true);
break;
case 24:
image = new CImage(ECF_R8G8B8, dim);
if (image)
CColorConverter::convert24BitTo24Bit(bmpData, (u8 *)image->getData(), header.Width, header.Height, pitch, true, true);
break;
case 32: // thx to Reinhard Ostermeier
image = new CImage(ECF_A8R8G8B8, dim);
if (image)
CColorConverter::convert32BitTo32Bit((s32 *)bmpData, (s32 *)image->getData(), header.Width, header.Height, pitch, true);
break;
};
// clean up
delete[] paletteData;
delete[] bmpData;
return image;
}
//! creates a loader which is able to load windows bitmaps
IImageLoader *createImageLoaderBMP()
{
return new CImageLoaderBMP;
}
} // end namespace video
} // end namespace irr

81
irr/src/CImageLoaderBMP.h
View file

@ -1,81 +0,0 @@
// Copyright (C) 2002-2012 Nikolaus Gebhardt
// This file is part of the "Irrlicht Engine".
// For conditions of distribution and use, see copyright notice in irrlicht.h
#pragma once
#include "IImageLoader.h"
namespace irr
{
namespace video
{
// byte-align structures
#include "irrpack.h"
struct SBMPHeader
{
u16 Id; // BM - Windows 3.1x, 95, NT, 98, 2000, ME, XP
// BA - OS/2 Bitmap Array
// CI - OS/2 Color Icon
// CP - OS/2 Color Pointer
// IC - OS/2 Icon
// PT - OS/2 Pointer
u32 FileSize;
u32 Reserved;
u32 BitmapDataOffset;
u32 BitmapHeaderSize; // should be 28h for windows bitmaps or
// 0Ch for OS/2 1.x or F0h for OS/2 2.x
u32 Width;
u32 Height;
u16 Planes;
u16 BPP; // 1: Monochrome bitmap
// 4: 16 color bitmap
// 8: 256 color bitmap
// 16: 16bit (high color) bitmap
// 24: 24bit (true color) bitmap
// 32: 32bit (true color) bitmap
u32 Compression; // 0: none (Also identified by BI_RGB)
// 1: RLE 8-bit / pixel (Also identified by BI_RLE4)
// 2: RLE 4-bit / pixel (Also identified by BI_RLE8)
// 3: Bitfields (Also identified by BI_BITFIELDS)
u32 BitmapDataSize; // Size of the bitmap data in bytes. This number must be rounded to the next 4 byte boundary.
u32 PixelPerMeterX;
u32 PixelPerMeterY;
u32 Colors;
u32 ImportantColors;
} PACK_STRUCT;
// Default alignment
#include "irrunpack.h"
/*!
Surface Loader for Windows bitmaps
*/
class CImageLoaderBMP : public IImageLoader
{
public:
//! constructor
CImageLoaderBMP();
//! returns true if the file maybe is able to be loaded by this class
//! based on the file extension (e.g. ".tga")
bool isALoadableFileExtension(const io::path &filename) const override;
//! returns true if the file maybe is able to be loaded by this class
bool isALoadableFileFormat(io::IReadFile *file) const override;
//! creates a surface from the file
IImage *loadImage(io::IReadFile *file) const override;
private:
void decompress8BitRLE(u8 *&BmpData, s32 size, s32 width, s32 height, s32 pitch) const;
void decompress4BitRLE(u8 *&BmpData, s32 size, s32 width, s32 height, s32 pitch) const;
};
} // end namespace video
} // end namespace irr

1
irr/src/CMakeLists.txt
View file

@ -370,7 +370,6 @@ endif()
set(IRRIMAGEOBJ
CColorConverter.cpp
CImage.cpp
CImageLoaderBMP.cpp
CImageLoaderJPG.cpp
CImageLoaderPNG.cpp
CImageLoaderTGA.cpp

4
irr/src/CNullDriver.cpp
View file

@ -22,9 +22,6 @@ namespace irr
namespace video
{
//! creates a loader which is able to load windows bitmaps
IImageLoader *createImageLoaderBMP();
//! creates a loader which is able to load jpeg images
IImageLoader *createImageLoaderJPG();
@ -93,7 +90,6 @@ CNullDriver::CNullDriver(io::IFileSystem *io, const core::dimension2d<u32> &scre
SurfaceLoader.push_back(video::createImageLoaderTGA());
SurfaceLoader.push_back(video::createImageLoaderPNG());
SurfaceLoader.push_back(video::createImageLoaderJPG());
SurfaceLoader.push_back(video::createImageLoaderBMP());
SurfaceWriter.push_back(video::createImageWriterJPG());
SurfaceWriter.push_back(video::createImageWriterPNG());