IUT CACHAN
SD + Bitmap
Dependencies: TS_DISCO_F746NG LCD_DISCO_F746NG BSP_DISCO_F746NG
Diff: bitmap.h
- Revision:
- 0:14e97aa401f3
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/bitmap.h Tue May 21 10:24:03 2019 +0000
@@ -0,0 +1,774 @@
+/*
+ * Windows Bitmap File Loader
+ * Version 1.2.5 (20120929)
+ *
+ * Supported Formats: 1, 4, 8, 16, 24, 32 Bit Images
+ * Alpha Bitmaps are also supported.
+ * Supported compression types: RLE 8, BITFIELDS
+ *
+ * Created by: Benjamin Kalytta, 2006 - 2012
+ * Thanks for bug fixes goes to: Chris Campbell
+ *
+ * Licence: Free to use, URL to my source and my name is required in your source code.
+ *
+ * Source can be found at http://www.kalytta.com/bitmap.h
+ *
+ * Warning: This code should not be used in unmodified form in a production environment.
+ * It should only serve as a basis for your own development.
+ * There is only a minimal error handling in this code. (Notice added 20111211)
+ */
+
+#ifndef BITMAP_H
+#define BITMAP_H
+
+#include <iostream>
+#include <fstream>
+#include <string>
+
+#ifndef __LITTLE_ENDIAN__
+ #ifndef __BIG_ENDIAN__
+ #define __LITTLE_ENDIAN__
+ #endif
+#endif
+
+#ifdef __LITTLE_ENDIAN__
+ #define BITMAP_SIGNATURE 0x4d42
+#else
+ #define BITMAP_SIGNATURE 0x424d
+#endif
+
+#if defined(_MSC_VER) || defined(__INTEL_COMPILER)
+ typedef unsigned __int32 uint32_t;
+ typedef unsigned __int16 uint16_t;
+ typedef unsigned __int8 uint8_t;
+ typedef __int32 int32_t;
+#elif defined(__GNUC__) || defined(__CYGWIN__) || defined(__MWERKS__) || defined(__WATCOMC__) || defined(__PGI) || defined(__LCC__)
+ #include <stdint.h>
+#else
+ typedef unsigned int uint32_t;
+ typedef unsigned short int uint16_t;
+ typedef unsigned char uint8_t;
+ typedef int int32_t;
+#endif
+
+#pragma pack(push, 1)
+
+typedef struct _BITMAP_FILEHEADER {
+ uint16_t Signature;
+ uint32_t Size;
+ uint32_t Reserved;
+ uint32_t BitsOffset;
+} BITMAP_FILEHEADER;
+
+#define BITMAP_FILEHEADER_SIZE 14
+
+typedef struct _BITMAP_HEADER {
+ uint32_t HeaderSize;
+ int32_t Width;
+ int32_t Height;
+ uint16_t Planes;
+ uint16_t BitCount;
+ uint32_t Compression;
+ uint32_t SizeImage;
+ int32_t PelsPerMeterX;
+ int32_t PelsPerMeterY;
+ uint32_t ClrUsed;
+ uint32_t ClrImportant;
+ uint32_t RedMask;
+ uint32_t GreenMask;
+ uint32_t BlueMask;
+ uint32_t AlphaMask;
+ uint32_t CsType;
+ uint32_t Endpoints[9]; // see http://msdn2.microsoft.com/en-us/library/ms536569.aspx
+ uint32_t GammaRed;
+ uint32_t GammaGreen;
+ uint32_t GammaBlue;
+} BITMAP_HEADER;
+
+typedef struct _RGBA {
+ uint8_t Red;
+ uint8_t Green;
+ uint8_t Blue;
+ uint8_t Alpha;
+} RGBA;
+
+typedef struct _BGRA {
+ uint8_t Blue;
+ uint8_t Green;
+ uint8_t Red;
+ uint8_t Alpha;
+} BGRA;
+
+#pragma pack(pop)
+
+class CBitmap {
+private:
+ BITMAP_FILEHEADER m_BitmapFileHeader;
+ BITMAP_HEADER m_BitmapHeader;
+ BGRA *m_BitmapData;
+ unsigned int m_BitmapSize;
+
+ // Masks and bit counts shouldn't exceed 32 Bits
+public:
+ class CColor {
+public:
+ static inline unsigned int BitCountByMask(unsigned int Mask) {
+ unsigned int BitCount = 0;
+ while (Mask) {
+ Mask &= Mask - 1;
+ BitCount++;
+ }
+ return BitCount;
+ }
+
+ static inline unsigned int BitPositionByMask(unsigned int Mask) {
+ return BitCountByMask((Mask & (~Mask + 1)) - 1);
+ }
+
+ static inline unsigned int ComponentByMask(unsigned int Color, unsigned int Mask) {
+ unsigned int Component = Color & Mask;
+ return Component >> BitPositionByMask(Mask);
+ }
+
+ static inline unsigned int BitCountToMask(unsigned int BitCount) {
+ return (BitCount == 32) ? 0xFFFFFFFF : (1 << BitCount) - 1;
+ }
+
+ static unsigned int Convert(unsigned int Color, unsigned int FromBitCount, unsigned int ToBitCount) {
+ if (ToBitCount < FromBitCount) {
+ Color >>= (FromBitCount - ToBitCount);
+ } else {
+ Color <<= (ToBitCount - FromBitCount);
+ if (Color > 0) {
+ Color |= BitCountToMask(ToBitCount - FromBitCount);
+ }
+ }
+ return Color;
+ }
+ };
+
+public:
+
+ CBitmap() : m_BitmapData(0), m_BitmapSize(0) {
+ Dispose();
+ }
+
+ CBitmap(const char* Filename) : m_BitmapData(0), m_BitmapSize(0) {
+ Load(Filename);
+ }
+
+ ~CBitmap() {
+ Dispose();
+ }
+
+ void Dispose() {
+ if (m_BitmapData) {
+ delete[] m_BitmapData;
+ m_BitmapData = 0;
+ }
+ memset(&m_BitmapFileHeader, 0, sizeof(m_BitmapFileHeader));
+ memset(&m_BitmapHeader, 0, sizeof(m_BitmapHeader));
+ }
+
+ /* Load specified Bitmap and stores it as RGBA in an internal buffer */
+
+ bool Load(const char *Filename) {
+ std::ifstream file(Filename, std::ios::binary | std::ios::in);
+
+ if (file.bad()) {
+ return false;
+ }
+
+ if (file.is_open() == false) {
+ return false;
+ }
+
+ Dispose();
+
+ file.read((char*) &m_BitmapFileHeader, BITMAP_FILEHEADER_SIZE);
+ if (m_BitmapFileHeader.Signature != BITMAP_SIGNATURE) {
+ return false;
+ }
+
+ file.read((char*) &m_BitmapHeader, sizeof(BITMAP_HEADER));
+
+ /* Load Color Table */
+
+ file.seekg(BITMAP_FILEHEADER_SIZE + m_BitmapHeader.HeaderSize, std::ios::beg);
+
+ unsigned int ColorTableSize = 0;
+
+ if (m_BitmapHeader.BitCount == 1) {
+ ColorTableSize = 2;
+ } else if (m_BitmapHeader.BitCount == 4) {
+ ColorTableSize = 16;
+ } else if (m_BitmapHeader.BitCount == 8) {
+ ColorTableSize = 256;
+ }
+
+ // Always allocate full sized color table
+
+ BGRA* ColorTable = new BGRA[ColorTableSize]; // std::bad_alloc exception should be thrown if memory is not available
+
+ file.read((char*) ColorTable, sizeof(BGRA) * m_BitmapHeader.ClrUsed);
+
+ /* ... Color Table for 16 bits images are not supported yet */
+
+ m_BitmapSize = GetWidth() * GetHeight();
+ m_BitmapData = new BGRA[m_BitmapSize];
+
+ unsigned int LineWidth = ((GetWidth() * GetBitCount() / 8) + 3) & ~3;
+ uint8_t *Line = new uint8_t[LineWidth];
+
+ file.seekg(m_BitmapFileHeader.BitsOffset, std::ios::beg);
+
+ int Index = 0;
+ bool Result = true;
+
+ if (m_BitmapHeader.Compression == 0) {
+ for (unsigned int i = 0; i < GetHeight(); i++) {
+ file.read((char*) Line, LineWidth);
+
+ uint8_t *LinePtr = Line;
+
+ for (unsigned int j = 0; j < GetWidth(); j++) {
+ if (m_BitmapHeader.BitCount == 1) {
+ uint32_t Color = *((uint8_t*) LinePtr);
+ for (int k = 0; k < 8; k++) {
+ m_BitmapData[Index].Red = ColorTable[Color & 0x80 ? 1 : 0].Red;
+ m_BitmapData[Index].Green = ColorTable[Color & 0x80 ? 1 : 0].Green;
+ m_BitmapData[Index].Blue = ColorTable[Color & 0x80 ? 1 : 0].Blue;
+ m_BitmapData[Index].Alpha = ColorTable[Color & 0x80 ? 1 : 0].Alpha;
+ Index++;
+ Color <<= 1;
+ }
+ LinePtr++;
+ j += 7;
+ } else if (m_BitmapHeader.BitCount == 4) {
+ uint32_t Color = *((uint8_t*) LinePtr);
+ m_BitmapData[Index].Red = ColorTable[(Color >> 4) & 0x0f].Red;
+ m_BitmapData[Index].Green = ColorTable[(Color >> 4) & 0x0f].Green;
+ m_BitmapData[Index].Blue = ColorTable[(Color >> 4) & 0x0f].Blue;
+ m_BitmapData[Index].Alpha = ColorTable[(Color >> 4) & 0x0f].Alpha;
+ Index++;
+ m_BitmapData[Index].Red = ColorTable[Color & 0x0f].Red;
+ m_BitmapData[Index].Green = ColorTable[Color & 0x0f].Green;
+ m_BitmapData[Index].Blue = ColorTable[Color & 0x0f].Blue;
+ m_BitmapData[Index].Alpha = ColorTable[Color & 0x0f].Alpha;
+ Index++;
+ LinePtr++;
+ j++;
+ } else if (m_BitmapHeader.BitCount == 8) {
+ uint32_t Color = *((uint8_t*) LinePtr);
+ m_BitmapData[Index].Red = ColorTable[Color].Red;
+ m_BitmapData[Index].Green = ColorTable[Color].Green;
+ m_BitmapData[Index].Blue = ColorTable[Color].Blue;
+ m_BitmapData[Index].Alpha = ColorTable[Color].Alpha;
+ Index++;
+ LinePtr++;
+ } else if (m_BitmapHeader.BitCount == 16) {
+ uint32_t Color = *((uint16_t*) LinePtr);
+ m_BitmapData[Index].Red = ((Color >> 10) & 0x1f) << 3;
+ m_BitmapData[Index].Green = ((Color >> 5) & 0x1f) << 3;
+ m_BitmapData[Index].Blue = (Color & 0x1f) << 3;
+ m_BitmapData[Index].Alpha = 255;
+ Index++;
+ LinePtr += 2;
+ } else if (m_BitmapHeader.BitCount == 24) {
+ uint32_t Color = *((uint32_t*) LinePtr);
+ m_BitmapData[Index].Blue = Color & 0xff;
+ m_BitmapData[Index].Green = (Color >> 8) & 0xff;
+ m_BitmapData[Index].Red = (Color >> 16) & 0xff;
+ m_BitmapData[Index].Alpha = 255;
+ Index++;
+ LinePtr += 3;
+ } else if (m_BitmapHeader.BitCount == 32) {
+ uint32_t Color = *((uint32_t*) LinePtr);
+ m_BitmapData[Index].Blue = Color & 0xff;
+ m_BitmapData[Index].Green = (Color >> 8) & 0xff;
+ m_BitmapData[Index].Red = (Color >> 16) & 0xff;
+ m_BitmapData[Index].Alpha = Color >> 24;
+ Index++;
+ LinePtr += 4;
+ }
+ }
+ }
+ } else if (m_BitmapHeader.Compression == 1) { // RLE 8
+ uint8_t Count = 0;
+ uint8_t ColorIndex = 0;
+ int x = 0, y = 0;
+
+ while (file.eof() == false) {
+ file.read((char*) &Count, sizeof(uint8_t));
+ file.read((char*) &ColorIndex, sizeof(uint8_t));
+
+ if (Count > 0) {
+ Index = x + y * GetWidth();
+ for (int k = 0; k < Count; k++) {
+ m_BitmapData[Index + k].Red = ColorTable[ColorIndex].Red;
+ m_BitmapData[Index + k].Green = ColorTable[ColorIndex].Green;
+ m_BitmapData[Index + k].Blue = ColorTable[ColorIndex].Blue;
+ m_BitmapData[Index + k].Alpha = ColorTable[ColorIndex].Alpha;
+ }
+ x += Count;
+ } else if (Count == 0) {
+ int Flag = ColorIndex;
+ if (Flag == 0) {
+ x = 0;
+ y++;
+ } else if (Flag == 1) {
+ break;
+ } else if (Flag == 2) {
+ char rx = 0;
+ char ry = 0;
+ file.read((char*) &rx, sizeof(char));
+ file.read((char*) &ry, sizeof(char));
+ x += rx;
+ y += ry;
+ } else {
+ Count = Flag;
+ Index = x + y * GetWidth();
+ for (int k = 0; k < Count; k++) {
+ file.read((char*) &ColorIndex, sizeof(uint8_t));
+ m_BitmapData[Index + k].Red = ColorTable[ColorIndex].Red;
+ m_BitmapData[Index + k].Green = ColorTable[ColorIndex].Green;
+ m_BitmapData[Index + k].Blue = ColorTable[ColorIndex].Blue;
+ m_BitmapData[Index + k].Alpha = ColorTable[ColorIndex].Alpha;
+ }
+ x += Count;
+ // Attention: Current Microsoft STL implementation seems to be buggy, tellg() always returns 0.
+ if (file.tellg() & 1) {
+ file.seekg(1, std::ios::cur);
+ }
+ }
+ }
+ }
+ } else if (m_BitmapHeader.Compression == 2) { // RLE 4
+ /* RLE 4 is not supported */
+ Result = false;
+ } else if (m_BitmapHeader.Compression == 3) { // BITFIELDS
+
+ /* We assumes that mask of each color component can be in any order */
+
+ uint32_t BitCountRed = CColor::BitCountByMask(m_BitmapHeader.RedMask);
+ uint32_t BitCountGreen = CColor::BitCountByMask(m_BitmapHeader.GreenMask);
+ uint32_t BitCountBlue = CColor::BitCountByMask(m_BitmapHeader.BlueMask);
+ uint32_t BitCountAlpha = CColor::BitCountByMask(m_BitmapHeader.AlphaMask);
+
+ for (unsigned int i = 0; i < GetHeight(); i++) {
+ file.read((char*) Line, LineWidth);
+
+ uint8_t *LinePtr = Line;
+
+ for (unsigned int j = 0; j < GetWidth(); j++) {
+
+ uint32_t Color = 0;
+
+ if (m_BitmapHeader.BitCount == 16) {
+ Color = *((uint16_t*) LinePtr);
+ LinePtr += 2;
+ } else if (m_BitmapHeader.BitCount == 32) {
+ Color = *((uint32_t*) LinePtr);
+ LinePtr += 4;
+ } else {
+ // Other formats are not valid
+ }
+ m_BitmapData[Index].Red = CColor::Convert(CColor::ComponentByMask(Color, m_BitmapHeader.RedMask), BitCountRed, 8);
+ m_BitmapData[Index].Green = CColor::Convert(CColor::ComponentByMask(Color, m_BitmapHeader.GreenMask), BitCountGreen, 8);
+ m_BitmapData[Index].Blue = CColor::Convert(CColor::ComponentByMask(Color, m_BitmapHeader.BlueMask), BitCountBlue, 8);
+ m_BitmapData[Index].Alpha = CColor::Convert(CColor::ComponentByMask(Color, m_BitmapHeader.AlphaMask), BitCountAlpha, 8);
+
+ Index++;
+ }
+ }
+ }
+
+ delete [] ColorTable;
+ delete [] Line;
+
+ file.close();
+ return Result;
+ }
+
+ bool Save(const char* Filename, unsigned int BitCount = 32) {
+ bool Result = true;
+
+ std::ofstream file(Filename, std::ios::out | std::ios::binary);
+
+ if (file.is_open() == false) {
+ return false;
+ }
+
+ BITMAP_FILEHEADER bfh;
+ BITMAP_HEADER bh;
+ memset(&bfh, 0, sizeof(bfh));
+ memset(&bh, 0, sizeof(bh));
+
+ bfh.Signature = BITMAP_SIGNATURE;
+ bfh.BitsOffset = BITMAP_FILEHEADER_SIZE + sizeof(BITMAP_HEADER);
+ bfh.Size = (GetWidth() * GetHeight() * BitCount) / 8 + bfh.BitsOffset;
+
+ bh.HeaderSize = sizeof(BITMAP_HEADER);
+ bh.BitCount = BitCount;
+
+ if (BitCount == 32) {
+ bh.Compression = 3; // BITFIELD
+ bh.AlphaMask = 0xff000000;
+ bh.BlueMask = 0x00ff0000;
+ bh.GreenMask = 0x0000ff00;
+ bh.RedMask = 0x000000ff;
+ } else if (BitCount == 16) {
+ bh.Compression = 3; // BITFIELD
+ bh.AlphaMask = 0x00000000;
+ bh.BlueMask = 0x0000001f;
+ bh.GreenMask = 0x000007E0;
+ bh.RedMask = 0x0000F800;
+ } else {
+ bh.Compression = 0; // RGB
+ }
+
+ unsigned int LineWidth = (GetWidth() + 3) & ~3;
+
+ bh.Planes = 1;
+ bh.Height = GetHeight();
+ bh.Width = GetWidth();
+ bh.SizeImage = (LineWidth * BitCount * GetHeight()) / 8;
+ bh.PelsPerMeterX = 3780;
+ bh.PelsPerMeterY = 3780;
+
+ if (BitCount == 32) {
+ file.write((char*) &bfh, sizeof(BITMAP_FILEHEADER));
+ file.write((char*) &bh, sizeof(BITMAP_HEADER));
+ file.write((char*) m_BitmapData, bh.SizeImage);
+ } else if (BitCount < 16) {
+ uint8_t* Bitmap = new uint8_t[bh.SizeImage];
+
+ BGRA *Palette = 0;
+ unsigned int PaletteSize = 0;
+
+ if (GetBitsWithPalette(Bitmap, bh.SizeImage, BitCount, Palette, PaletteSize)) {
+ bfh.BitsOffset += PaletteSize * sizeof(BGRA);
+
+ file.write((char*) &bfh, BITMAP_FILEHEADER_SIZE);
+ file.write((char*) &bh, sizeof(BITMAP_HEADER));
+ file.write((char*) Palette, PaletteSize * sizeof(BGRA));
+ file.write((char*) Bitmap, bh.SizeImage);
+ }
+ delete [] Bitmap;
+ delete [] Palette;
+ } else {
+ uint32_t RedMask = 0;
+ uint32_t GreenMask = 0;
+ uint32_t BlueMask = 0;
+ uint32_t AlphaMask = 0;
+
+ if (BitCount == 16) {
+ RedMask = 0x0000F800;
+ GreenMask = 0x000007E0;
+ BlueMask = 0x0000001F;
+ AlphaMask = 0x00000000;
+ } else if (BitCount == 24) {
+ RedMask = 0x00FF0000;
+ GreenMask = 0x0000FF00;
+ BlueMask = 0x000000FF;
+ } else {
+ // Other color formats are not valid
+ Result = false;
+ }
+
+ if (Result) {
+ if (GetBits(NULL, bh.SizeImage, RedMask, GreenMask, BlueMask, AlphaMask)) {
+ uint8_t* Bitmap = new uint8_t[bh.SizeImage];
+ if (GetBits(Bitmap, bh.SizeImage, RedMask, GreenMask, BlueMask, AlphaMask)) {
+ file.write((char*) &bfh, sizeof(BITMAP_FILEHEADER));
+ file.write((char*) &bh, sizeof(BITMAP_HEADER));
+ file.write((char*) Bitmap, bh.SizeImage);
+ }
+ delete [] Bitmap;
+ }
+ }
+ }
+
+ file.close();
+ return Result;
+ }
+
+ unsigned int GetWidth() {
+ /* Add plausibility test */
+ // if (abs(m_BitmapHeader.Width) > 8192) {
+ // m_BitmapHeader.Width = 8192;
+ // }
+ return m_BitmapHeader.Width < 0 ? -m_BitmapHeader.Width : m_BitmapHeader.Width;
+ }
+
+ unsigned int GetHeight() {
+ /* Add plausibility test */
+ // if (abs(m_BitmapHeader.Height) > 8192) {
+ // m_BitmapHeader.Height = 8192;
+ // }
+ return m_BitmapHeader.Height < 0 ? -m_BitmapHeader.Height : m_BitmapHeader.Height;
+ }
+
+ unsigned int GetBitCount() {
+ /* Add plausibility test */
+ // if (m_BitmapHeader.BitCount > 32) {
+ // m_BitmapHeader.BitCount = 32;
+ // }
+ return m_BitmapHeader.BitCount;
+ }
+
+ /* Copies internal RGBA buffer to user specified buffer */
+
+ bool GetBits(void* Buffer, unsigned int &Size) {
+ bool Result = false;
+ if (Size == 0 || Buffer == 0) {
+ Size = m_BitmapSize * sizeof(RGBA);
+ Result = m_BitmapSize != 0;
+ } else {
+ memcpy(Buffer, m_BitmapData, Size);
+ Result = true;
+ }
+ return Result;
+ }
+
+ /* Returns internal RGBA buffer */
+
+ void* GetBits() {
+ return m_BitmapData;
+ }
+
+ /* Copies internal RGBA buffer to user specified buffer and converts it into destination
+ * bit format specified by component masks.
+ *
+ * Typical Bitmap color formats (BGR/BGRA):
+ *
+ * Masks for 16 bit (5-5-5): ALPHA = 0x00000000, RED = 0x00007C00, GREEN = 0x000003E0, BLUE = 0x0000001F
+ * Masks for 16 bit (5-6-5): ALPHA = 0x00000000, RED = 0x0000F800, GREEN = 0x000007E0, BLUE = 0x0000001F
+ * Masks for 24 bit: ALPHA = 0x00000000, RED = 0x00FF0000, GREEN = 0x0000FF00, BLUE = 0x000000FF
+ * Masks for 32 bit: ALPHA = 0xFF000000, RED = 0x00FF0000, GREEN = 0x0000FF00, BLUE = 0x000000FF
+ *
+ * Other color formats (RGB/RGBA):
+ *
+ * Masks for 32 bit (RGBA): ALPHA = 0xFF000000, RED = 0x000000FF, GREEN = 0x0000FF00, BLUE = 0x00FF0000
+ *
+ * Bit count will be rounded to next 8 bit boundary. If IncludePadding is true, it will be ensured
+ * that line width is a multiple of 4. padding bytes are included if necessary.
+ *
+ * NOTE: systems with big endian byte order may require masks in inversion order.
+ */
+
+ bool GetBits(void* Buffer, unsigned int &Size, unsigned int RedMask, unsigned int GreenMask, unsigned int BlueMask, unsigned int AlphaMask, bool IncludePadding = true) {
+ bool Result = false;
+
+ uint32_t BitCountRed = CColor::BitCountByMask(RedMask);
+ uint32_t BitCountGreen = CColor::BitCountByMask(GreenMask);
+ uint32_t BitCountBlue = CColor::BitCountByMask(BlueMask);
+ uint32_t BitCountAlpha = CColor::BitCountByMask(AlphaMask);
+
+ unsigned int BitCount = (BitCountRed + BitCountGreen + BitCountBlue + BitCountAlpha + 7) & ~7;
+
+ if (BitCount > 32) {
+ return false;
+ }
+
+ unsigned int w = GetWidth();
+ //unsigned int LineWidth = (w + 3) & ~3;
+ unsigned int dataBytesPerLine = (w * BitCount + 7) / 8;
+ unsigned int LineWidth = (dataBytesPerLine + 3) & ~3;
+
+ if (Size == 0 || Buffer == 0) {
+ //Size = (LineWidth * GetHeight() * BitCount) / 8 + sizeof(unsigned int);
+ Size = (GetWidth() * GetHeight() * BitCount) / 8 + sizeof(unsigned int);
+ return true;
+ }
+
+ uint8_t* BufferPtr = (uint8_t*) Buffer;
+
+ Result = true;
+
+ uint32_t BitPosRed = CColor::BitPositionByMask(RedMask);
+ uint32_t BitPosGreen = CColor::BitPositionByMask(GreenMask);
+ uint32_t BitPosBlue = CColor::BitPositionByMask(BlueMask);
+ uint32_t BitPosAlpha = CColor::BitPositionByMask(AlphaMask);
+
+ unsigned int j = 0;
+
+ for (unsigned int i = 0; i < m_BitmapSize; i++) {
+ *(uint32_t*) BufferPtr =
+ (CColor::Convert(m_BitmapData[i].Blue, 8, BitCountBlue) << BitPosBlue) |
+ (CColor::Convert(m_BitmapData[i].Green, 8, BitCountGreen) << BitPosGreen) |
+ (CColor::Convert(m_BitmapData[i].Red, 8, BitCountRed) << BitPosRed) |
+ (CColor::Convert(m_BitmapData[i].Alpha, 8, BitCountAlpha) << BitPosAlpha);
+
+ if (IncludePadding) {
+ j++;
+ if (j >= w) {
+ for (unsigned int k = 0; k < LineWidth - dataBytesPerLine; k++) {
+ BufferPtr += (BitCount >> 3);
+ }
+ j = 0;
+ }
+ }
+
+ BufferPtr += (BitCount >> 3);
+ }
+
+ Size -= sizeof(unsigned int);
+
+ return Result;
+ }
+
+ /* See GetBits().
+ * It creates a corresponding color table (palette) which have to be destroyed by the user after usage.
+ *
+ * Supported Bit depths are: 4, 8
+ *
+ * Todo: Optimize, use optimized palette, do ditehring (see my dithering class), support padding for 4 bit bitmaps
+ */
+
+ bool GetBitsWithPalette(void* Buffer, unsigned int &Size, unsigned int BitCount, BGRA* &Palette, unsigned int &PaletteSize, bool OptimalPalette = false, bool IncludePadding = true) {
+ bool Result = false;
+
+ if (BitCount > 16) {
+ return false;
+ }
+
+ unsigned int w = GetWidth();
+ unsigned int dataBytesPerLine = (w * BitCount + 7) / 8;
+ unsigned int LineWidth = (dataBytesPerLine + 3) & ~3;
+
+ if (Size == 0 || Buffer == 0) {
+ Size = (LineWidth * GetHeight() * BitCount) / 8;
+ return true;
+ }
+
+
+ if (OptimalPalette) {
+ PaletteSize = 0;
+ // Not implemented
+ } else {
+ if (BitCount == 1) {
+ PaletteSize = 2;
+ // Not implemented: Who need that?
+ } else if (BitCount == 4) { // 2:2:1
+ PaletteSize = 16;
+ Palette = new BGRA[PaletteSize];
+ for (int r = 0; r < 4; r++) {
+ for (int g = 0; g < 2; g++) {
+ for (int b = 0; b < 2; b++) {
+ Palette[r | g << 2 | b << 3].Red = r ? (r << 6) | 0x3f : 0;
+ Palette[r | g << 2 | b << 3].Green = g ? (g << 7) | 0x7f : 0;
+ Palette[r | g << 2 | b << 3].Blue = b ? (b << 7) | 0x7f : 0;
+ Palette[r | g << 2 | b << 3].Alpha = 0xff;
+ }
+ }
+ }
+ } else if (BitCount == 8) { // 3:3:2
+ PaletteSize = 256;
+ Palette = new BGRA[PaletteSize];
+ for (int r = 0; r < 8; r++) {
+ for (int g = 0; g < 8; g++) {
+ for (int b = 0; b < 4; b++) {
+ Palette[r | g << 3 | b << 6].Red = r ? (r << 5) | 0x1f : 0;
+ Palette[r | g << 3 | b << 6].Green = g ? (g << 5) | 0x1f : 0;
+ Palette[r | g << 3 | b << 6].Blue = b ? (b << 6) | 0x3f : 0;
+ Palette[r | g << 3 | b << 6].Alpha = 0xff;
+ }
+ }
+ }
+ } else if (BitCount == 16) { // 5:5:5
+ // Not implemented
+ }
+ }
+
+ unsigned int j = 0;
+ uint8_t* BufferPtr = (uint8_t*) Buffer;
+
+ for (unsigned int i = 0; i < m_BitmapSize; i++) {
+ if (BitCount == 1) {
+ // Not implemented: Who needs that?
+ } else if (BitCount == 4) {
+ *BufferPtr = ((m_BitmapData[i].Red >> 6) | (m_BitmapData[i].Green >> 7) << 2 | (m_BitmapData[i].Blue >> 7) << 3) << 4;
+ i++;
+ *BufferPtr |= (m_BitmapData[i].Red >> 6) | (m_BitmapData[i].Green >> 7) << 2 | (m_BitmapData[i].Blue >> 7) << 3;
+ } else if (BitCount == 8) {
+ *BufferPtr = (m_BitmapData[i].Red >> 5) | (m_BitmapData[i].Green >> 5) << 3 | (m_BitmapData[i].Blue >> 5) << 6;
+ } else if (BitCount == 16) {
+ // Not implemented
+ }
+
+ if (IncludePadding) {
+ j++;
+ if (j >= w) {
+ for (unsigned int k = 0; k < (LineWidth - dataBytesPerLine); k++) {
+ BufferPtr += BitCount / 8;
+ }
+ j = 0;
+ }
+ }
+
+ BufferPtr++;
+ }
+
+ Result = true;
+
+ return Result;
+ }
+
+ /* Set Bitmap Bits. Will be converted to RGBA internally */
+
+ bool SetBits(void* Buffer, unsigned int Width, unsigned int Height, unsigned int RedMask, unsigned int GreenMask, unsigned int BlueMask, unsigned int AlphaMask = 0) {
+ if (Buffer == 0) {
+ return false;
+ }
+
+ uint8_t *BufferPtr = (uint8_t*) Buffer;
+
+ Dispose();
+
+ m_BitmapHeader.Width = Width;
+ m_BitmapHeader.Height = Height;
+ m_BitmapHeader.BitCount = 32;
+ m_BitmapHeader.Compression = 3;
+
+ m_BitmapSize = GetWidth() * GetHeight();
+ m_BitmapData = new BGRA[m_BitmapSize];
+
+ /* Find bit count by masks (rounded to next 8 bit boundary) */
+
+ unsigned int BitCount = (CColor::BitCountByMask(RedMask | GreenMask | BlueMask | AlphaMask) + 7) & ~7;
+
+ uint32_t BitCountRed = CColor::BitCountByMask(RedMask);
+ uint32_t BitCountGreen = CColor::BitCountByMask(GreenMask);
+ uint32_t BitCountBlue = CColor::BitCountByMask(BlueMask);
+ uint32_t BitCountAlpha = CColor::BitCountByMask(AlphaMask);
+
+ for (unsigned int i = 0; i < m_BitmapSize; i++) {
+ unsigned int Color = 0;
+ if (BitCount <= 8) {
+ Color = *((uint8_t*) BufferPtr);
+ BufferPtr += 1;
+ } else if (BitCount <= 16) {
+ Color = *((uint16_t*) BufferPtr);
+ BufferPtr += 2;
+ } else if (BitCount <= 24) {
+ Color = *((uint32_t*) BufferPtr);
+ BufferPtr += 3;
+ } else if (BitCount <= 32) {
+ Color = *((uint32_t*) BufferPtr);
+ BufferPtr += 4;
+ } else {
+ /* unsupported */
+ BufferPtr += 1;
+ }
+ m_BitmapData[i].Alpha = CColor::Convert(CColor::ComponentByMask(Color, AlphaMask), BitCountAlpha, 8);
+ m_BitmapData[i].Red = CColor::Convert(CColor::ComponentByMask(Color, RedMask), BitCountRed, 8);
+ m_BitmapData[i].Green = CColor::Convert(CColor::ComponentByMask(Color, GreenMask), BitCountGreen, 8);
+ m_BitmapData[i].Blue = CColor::Convert(CColor::ComponentByMask(Color, BlueMask), BitCountBlue, 8);
+ }
+
+ return true;
+ }
+};
+
+#endif