//======================================================// 文件名稱：	BitMap.c// 功能描述：	位圖處理// 維護記錄：	2007-02-09	v1.0	by lijian// 注意事項：	該程序中涉及到的數據類型需要根據平臺確定//				其中，COLOR類型為無符號16bit數據類型//				RGB()是一個宏主要完成RGB三色數據向16bit 565格式的轉換,//				該宏的完整定義如下：//					#define RGB(r, g, b) RGB24(r, g, b)//					#define RGB24(r, g, b) ( (((COLOR)r&0xf8)<<8) | (((COLOR)g&0xfc)<<3) | (((COLOR)b&0xf8)>>3) )//					#define RGB16(rgb) ( (((COLOR)rgb&0xffe0)<<1) | ((COLOR)rgb&0x1f) )//======================================================#include "BitMap.h"//=============================================================//語法格式：	UINT8 BMP_OpenFile(UINT8 *BitFile)//實現功能：	讀取位圖文件信息//參數：		BFile	-	BMP文件指針//				BitFile	-	位圖文件保存首地址//返回值：		成功返回0, 失敗(不支持的格式)返回-1//=============================================================UINT8 BMP_OpenFile(BITMAP_FILE *BFile, UINT8 *BitFile){	UINT32 i;	BFile->Opened = 0;	BFile->FileHead.Type = (UINT16)BitFile[0] + ((UINT16)BitFile[1] << 8);	BFile->FileHead.FileSize = (UINT32)BitFile[2] + ((UINT32)BitFile[3] << 8) + ((UINT32)BitFile[4] << 16) + ((UINT32)BitFile[5] << 24);	BFile->FileHead.Offset = (UINT32)BitFile[0x0a] + ((UINT32)BitFile[0x0b] << 8) + ((UINT32)BitFile[0x0c] << 16) + ((UINT32)BitFile[0x0d] << 24);	BFile->InfoHead.HeadSize = (UINT32)BitFile[0x0e] + ((UINT32)BitFile[0x0f] << 8) + ((UINT32)BitFile[0x10] << 16) + ((UINT32)BitFile[0x11] << 24);	BFile->InfoHead.Width = (UINT32)BitFile[0x12] + ((UINT32)BitFile[0x13] << 8) + ((UINT32)BitFile[0x14] << 16) + ((UINT32)BitFile[0x15] << 24);	BFile->InfoHead.Height = (UINT32)BitFile[0x16] + ((UINT32)BitFile[0x17] << 8) + ((UINT32)BitFile[0x18] << 16) + ((UINT32)BitFile[0x19] << 24);	BFile->InfoHead.BitPerPixel = (UINT16)BitFile[0x1c] + ((UINT16)BitFile[0x1d] << 8);	BFile->InfoHead.CompresType = (UINT32)BitFile[0x1e] + ((UINT32)BitFile[0x1f] << 8) + ((UINT32)BitFile[0x20] << 16) + ((UINT32)BitFile[0x21] << 24);	BFile->InfoHead.ColorTable.CTOffset = BFile->InfoHead.HeadSize + 0x0e;	BFile->InfoHead.ColorTable.CTSize = (BFile->FileHead.Offset - BFile->InfoHead.HeadSize - 0x0e) >> 2;	BFile->InfoHead.DataSize = (UINT32)BitFile[0x22] + ((UINT32)BitFile[0x23] << 8) + ((UINT32)BitFile[0x24] << 16) + ((UINT32)BitFile[0x25] << 24);	BFile->Data = BitFile;	BFile->LineWidth = (((BFile->InfoHead.Width * BFile->InfoHead.BitPerPixel) + 31) >> 5) << 2;	if((BFile->FileHead.Type != 0x4d42) || ((BFile->InfoHead.CompresType != BI_RGB) && (BFile->InfoHead.CompresType != BI_BITFIELDS)))																		// 僅支持不壓縮的位圖格式	{		return -1;	}	for(i = 0; i < BFile->InfoHead.ColorTable.CTSize; i++)	{		BFile->InfoHead.ColorTable.ColorTable[i].B = BitFile[BFile->InfoHead.ColorTable.CTOffset + 4 * i];		BFile->InfoHead.ColorTable.ColorTable[i].G = BitFile[BFile->InfoHead.ColorTable.CTOffset + 4 * i + 1];		BFile->InfoHead.ColorTable.ColorTable[i].R = BitFile[BFile->InfoHead.ColorTable.CTOffset + 4 * i + 2];		BFile->InfoHead.ColorTable.ColorTable[i].Filled = 0;	}	BFile->Opened = 1;	return 0;}//=============================================================//語法格式：	UINT8 BMP_CheckFormat(void)//實現功能：	檢查文件格式是否支持//參數：		BFile	-	BMP文件指針//返回值：		支持返回1, 不支持返回0//注意事項：	需要首先調用BMP_OpenFile()函數讀取文件信息//=============================================================UINT8 BMP_CheckFormat(BITMAP_FILE *BFile){	return BFile->Opened;}//=============================================================//語法格式：	UINT32 BMP_GetWidth(void)//實現功能：	得到文件寬度//參數：		BFile	-	BMP文件指針//返回值：		文件寬度//注意事項：	需要首先調用BMP_OpenFile()函數讀取文件信息//=============================================================UINT32 BMP_GetWidth(BITMAP_FILE *BFile){	if(BFile->Opened == 0)		return 0;	return(BFile->InfoHead.Width);}//=============================================================//語法格式：	UINT32 BMP_GetHeight(void)//實現功能：	得到文件高度//參數：		BFile	-	BMP文件指針//返回值：		文件高度//注意事項：	需要首先調用BMP_OpenFile()函數讀取文件信息//=============================================================UINT32 BMP_GetHeight(BITMAP_FILE *BFile){	if(BFile->Opened == 0)		return 0;	return(BFile->InfoHead.Height);}//=============================================================//語法格式：	UINT32 BMP_GetOffset(void)//實現功能：	得到位圖數據的偏移地址//參數：		BFile	-	BMP文件指針//返回值：		位圖數據偏移//注意事項：	需要首先調用BMP_OpenFile()函數讀取文件信息//=============================================================UINT32 BMP_GetOffset(BITMAP_FILE *BFile){	if(BFile->Opened == 0)		return 0;	return(BFile->FileHead.Offset);}//=============================================================//語法格式：	UINT32 BMP_GetLineWidth(void)//實現功能：	得到每行圖象占用的byte數//參數：		BFile	-	BMP文件指針//返回值：		每行圖象占用的byte數//注意事項：	需要首先調用BMP_OpenFile()函數讀取文件信息//=============================================================UINT32 BMP_GetLineWidth(BITMAP_FILE *BFile){	if(BFile->Opened == 0)		return 0;	return(BFile->LineWidth);}//=============================================================//語法格式：	UINT32 BMP_GetLineColor2(BITMAP_FILE *BFile, UINT8 *DataAddr, COLOR *ColorTable)//實現功能：	從指定地址處獲取該行的顏色//參數：		BFile	-	BMP文件指針//				DataAddr-	位圖行數據保存首地址//				ColorTable-	保存顏色的數組//返回值：		成功返回0, 失敗(不支持的格式)返回-1//=============================================================UINT32 BMP_GetLineColor2(BITMAP_FILE *BFile, UINT8 *DataAddr, COLOR *ColorTable){	UINT32 Offset = 0;	RGBQUAD CT;	int i;	if(BFile->Opened == 0)		return 0;//	Offset = (BFile->InfoHead.Height - 1 - line) * (BFile->LineWidth << 3) + BFile->FileHead.Offset * 8;	Offset = 0;	switch(BFile->InfoHead.BitPerPixel)	{		case BP_SINGLE:			for(i = 0; i < BFile->InfoHead.Width; i++)			{				if((DataAddr[Offset >> 3] & (0x80 >> ((UINT8)Offset & 0x07))) != 0)					ColorTable[i] = RGB(0xff, 0xff, 0xff);				else					ColorTable[i] = RGB(0, 0, 0);				Offset++;			}			break;		case BP_16COLOR:			for(i = 0; i < BFile->InfoHead.Width; i++)			{				if(((UINT8)Offset & 0x08))					CT = BFile->InfoHead.ColorTable.ColorTable[DataAddr[Offset >> 3] & 0x0f];				else					CT = BFile->InfoHead.ColorTable.ColorTable[(DataAddr[Offset >> 3] >> 4) & 0x0f];				ColorTable[i] = RGB(CT.R, CT.G, CT.B);				Offset += 4;			}			break;		case BP_256COLOR:			for(i = 0; i < BFile->InfoHead.Width; i++)			{				CT = BFile->InfoHead.ColorTable.ColorTable[DataAddr[Offset >> 3]];				ColorTable[i] = RGB(CT.R, CT.G, CT.B);				Offset += 8;			}			break;		case BP_16BITCOLOR:			Offset >>= 3;			for(i = 0; i < BFile->InfoHead.Width; i++)			{				ColorTable[i] = RGB16(*(UINT16 *)(DataAddr + Offset));				Offset += 2;			}			break;		case BP_24BITCOLOR:		case BP_32BITCOLOR:			Offset >>= 3;			for(i = 0; i < BFile->InfoHead.Width; i++)			{				ColorTable[i] = RGB(DataAddr[Offset + 2], DataAddr[Offset + 1], DataAddr[Offset]);				Offset += 3;			}			break;		default:			return 0;			break;	}	return BFile->InfoHead.Width;}//=============================================================//語法格式：	UINT32 BMP_GetLineColor(BITMAP_FILE *BFile, UINT16 line, COLOR *ColorTable)//實現功能：	獲取指定行的顏色//參數：		BFile	-	BMP文件指針//				line	-	行數(自上而下)//				ColorTable-	保存顏色的數組//返回值：		成功返回0, 失敗(不支持的格式)返回-1//=============================================================UINT32 BMP_GetLineColor(BITMAP_FILE *BFile, UINT16 line, COLOR *ColorTable){	UINT32 Offset = 0;	RGBQUAD CT;	int i;	if(BFile->Opened == 0)		return 0;	Offset = (BFile->InfoHead.Height - 1 - line) * (BFile->LineWidth << 3) + BFile->FileHead.Offset * 8;	switch(BFile->InfoHead.BitPerPixel)	{		case BP_SINGLE:			for(i = 0; i < BFile->InfoHead.Width; i++)			{				if((BFile->Data[Offset >> 3] & (0x80 >> ((UINT8)Offset & 0x07))) != 0)					ColorTable[i] = RGB(0xff, 0xff, 0xff);				else					ColorTable[i] = RGB(0, 0, 0);				Offset++;			}			break;		case BP_16COLOR:			for(i = 0; i < BFile->InfoHead.Width; i++)			{				if(((UINT8)Offset & 0x08))					CT = BFile->InfoHead.ColorTable.ColorTable[BFile->Data[Offset >> 3] & 0x0f];				else					CT = BFile->InfoHead.ColorTable.ColorTable[(BFile->Data[Offset >> 3] >> 4) & 0x0f];				ColorTable[i] = RGB(CT.R, CT.G, CT.B);				Offset += 4;			}			break;		case BP_256COLOR:			for(i = 0; i < BFile->InfoHead.Width; i++)			{				CT = BFile->InfoHead.ColorTable.ColorTable[BFile->Data[Offset >> 3]];				ColorTable[i] = RGB(CT.R, CT.G, CT.B);				Offset += 8;			}			break;		case BP_16BITCOLOR:			Offset >>= 3;			for(i = 0; i < BFile->InfoHead.Width; i++)			{				ColorTable[i] = RGB16(*(UINT16 *)(BFile->Data + Offset));				Offset += 2;			}			break;		case BP_24BITCOLOR:		case BP_32BITCOLOR:			Offset >>= 3;			for(i = 0; i < BFile->InfoHead.Width; i++)			{				ColorTable[i] = RGB(BFile->Data[Offset + 2], BFile->Data[Offset + 1], BFile->Data[Offset]);				Offset += 3;			}			break;		default:			return 0;			break;	}	return BFile->InfoHead.Width;}//=============================================================//語法格式：	COLOR BMP_GetPixelColor(UINT16 x, UINT16 y)//實現功能：	得到指定點的顏色//參數：		BFile	-	BMP文件指針//				x		-	橫坐標//				y		-	縱坐標//返回值：		顏色(保存格式為16bit 565真彩格式：rrrrr-ggggg-bbbbb)//注意事項：	需要首先調用BMP_OpenFile()函數讀取文件信息//				另外，函數中沒有對坐標的有效性進行檢查，使用的時候注意！//=============================================================COLOR BMP_GetPixelColor(BITMAP_FILE *BFile, UINT16 x, UINT16 y){	UINT32 Offset = 0;	COLOR Ret = RGB(0, 0, 0);	RGBQUAD CT;	if(BFile->Opened == 0)		return RGB(0, 0, 0);	Offset = (BFile->InfoHead.Height - 1 - y) * (BFile->LineWidth << 3) + x * BFile->InfoHead.BitPerPixel + BFile->FileHead.Offset * 8;	switch(BFile->InfoHead.BitPerPixel)	{		case BP_SINGLE:			if((BFile->Data[Offset >> 3] & (0x80 >> ((UINT8)Offset & 0x07))) != 0)				Ret = RGB(0xff, 0xff, 0xff);			else				Ret = RGB(0, 0, 0);			break;		case BP_16COLOR:			if(((UINT8)Offset & 0x08))				CT = BFile->InfoHead.ColorTable.ColorTable[BFile->Data[Offset >> 3] & 0x0f];			else				CT = BFile->InfoHead.ColorTable.ColorTable[(BFile->Data[Offset >> 3] >> 4) & 0x0f];			Ret = RGB(CT.R, CT.G, CT.B);			break;		case BP_256COLOR:			CT = BFile->InfoHead.ColorTable.ColorTable[BFile->Data[Offset >> 3]];			Ret = RGB(CT.R, CT.G, CT.B);			break;		case BP_16BITCOLOR:			Ret = RGB16(*(UINT16 *)(BFile->Data + (Offset >> 3)));			break;		case BP_24BITCOLOR:		case BP_32BITCOLOR:			Offset >>= 3;			Ret = RGB(BFile->Data[Offset + 2], BFile->Data[Offset + 1], BFile->Data[Offset]);			break;		default:			Ret = RGB(0, 0, 0);			break;	}	return Ret;}//=============================================================//語法格式：	void BMP_CloseFile(void)//實現功能：	關閉位圖文件//參數：		BFile	-	BMP文件指針//返回值：		無//=============================================================void BMP_CloseFile(BITMAP_FILE *BFile){	BFile->Opened = 0;}#if 0int BMP_CreateFile(BITMAP_FILE *BFile, UINT8 *SaveAddr, UINT32 Width, UINT32 Height, INT32 BitMode){	BFile->LineWidth = (((BFile->InfoHead.Width * BFile->InfoHead.BitPerPixel) + 31) >> 5) << 2;	BFile->InfoHead.HeadSize = 0x28;	BFile->InfoHead.Width = Width;	BFile->InfoHead.Height = Height;	BFile->InfoHead.Planes = 1;	if(BitMode==24)	{		BFile->InfoHead.BitPerPixel = 24;		BFile->InfoHead.DataSize = BFile->LineWidth * Height * 3;	}	else if(BitMode==16)	{		BFile->InfoHead.BitPerPixel = 16;		BFile->InfoHead.DataSize = BFile->LineWidth * Height * 2;	}	else		return -1;	BFile->InfoHead.CompresType = 0;		BFile->InfoHead.HResolution = 0;	BFile->InfoHead.VResolution = 0;	BFile->InfoHead.Colors = 0;	BFile->InfoHead.ImportColor = 0;		BFile->FileHead.Type = 0x4d42;	BFile->FileHead.FileSize = 0x36 + BFile->InfoHead.DataSize;	BFile->FileHead.Reserved = 0;	BFile->FileHead.Offset = 0x36;	memcpy(SaveAddr, (UINT8 *)BFile + 2, 0x36);	BFile->Data = SaveAddr + 0x36;	return 0;}void BMP_PutPixel(BITMAP_FILE *BFile, UINT16 x, UINT16 y, COLOR Color){}#endif