1 files changed, 184 insertions, 0 deletions
diff --git a/KaplaDemo/samples/sampleViewer3/BmpFile.cpp b/KaplaDemo/samples/sampleViewer3/BmpFile.cpp
new file mode 100644
index 00000000..50c213a2
--- /dev/null
+++ b/KaplaDemo/samples/sampleViewer3/BmpFile.cpp
@@ -0,0 +1,184 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include "BmpFile.h"
+
+static bool isBigEndian() { int i = 1; return *((char*)&i)==0; }
+
+static unsigned short endianSwap(unsigned short nValue)
+{
+   return (((nValue>> 8)) | (nValue << 8));
+
+}
+
+static unsigned int endianSwap(unsigned int i)
+{
+  unsigned char b1, b2, b3, b4;
+
+  b1 = i & 255;
+  b2 = ( i >> 8 ) & 255;
+  b3 = ( i>>16 ) & 255;
+  b4 = ( i>>24 ) & 255;
+
+  return ((unsigned int)b1 << 24) + ((unsigned int)b2 << 16) + ((unsigned int)b3 << 8) + b4;
+}
+
+// -------------------------------------------------------------------
+
+#pragma pack(1)
+
+struct BMPHEADER {
+	unsigned short		Type;
+	unsigned int		Size;
+	unsigned short		Reserved1;
+	unsigned short		Reserved2;
+	unsigned int		OffBits;
+};
+
+// Only Win3.0 BMPINFO (see later for OS/2)
+struct BMPINFO {
+	unsigned int		Size;
+	unsigned int		Width;
+	unsigned int		Height;
+	unsigned short		Planes;
+	unsigned short		BitCount;
+	unsigned int		Compression;
+	unsigned int		SizeImage;
+	unsigned int		XPelsPerMeter;
+	unsigned int		YPelsPerMeter;
+	unsigned int		ClrUsed;
+	unsigned int		ClrImportant;
+};
+
+#pragma pack()
+
+// Compression Type
+#define BI_RGB      0L
+#define BI_RLE8     1L
+#define BI_RLE4     2L
+
+// -------------------------------------------------------------------
+BmpLoaderBuffer::BmpLoaderBuffer() 
+{
+	mWidth = 0;
+	mHeight = 0;
+	mRGB = NULL;
+}
+
+
+// -------------------------------------------------------------------
+BmpLoaderBuffer::~BmpLoaderBuffer() 
+{
+	if (mRGB) free(mRGB);
+}
+
+// -------------------------------------------------------------------
+bool BmpLoaderBuffer::loadFile(const char *filename)
+{
+	if (mRGB) {
+		free(mRGB);
+		mRGB = NULL;
+	}
+	mWidth = 0;
+	mHeight = 0;
+
+	FILE *f = fopen(filename, "rb");
+	if (!f) 
+		return false;
+
+	size_t num;
+	BMPHEADER header;
+	num = fread(&header, sizeof(BMPHEADER), 1, f);
+	if(isBigEndian()) header.Type = endianSwap(header.Type);
+	if (num != 1) { fclose(f); return false; }
+	if (header.Type != 'MB') { fclose(f); return false; }
+
+	BMPINFO info;
+	num = fread(&info, sizeof(BMPINFO), 1, f);
+	if (num != 1) { fclose(f); return false; }
+	if(isBigEndian()) info.Size = endianSwap(info.Size);
+	if(isBigEndian()) info.BitCount = endianSwap(info.BitCount);
+	if(isBigEndian()) info.Compression = endianSwap(info.Compression);
+	if(isBigEndian()) info.Width = endianSwap(info.Width);
+	if(isBigEndian()) info.Height = endianSwap(info.Height);
+
+	if (info.Size != sizeof(BMPINFO)) { fclose(f); return false; }
+	if (info.BitCount != 24) { fclose(f); return false; }
+	if (info.Compression != BI_RGB) { fclose(f); return false; }
+
+	mWidth = info.Width;
+	mHeight = info.Height;
+	mRGB = (unsigned char*)malloc(mWidth * mHeight * 3);
+
+	int lineLen = (((info.Width * (info.BitCount>>3)) + 3)>>2)<<2;
+	unsigned char *line = (unsigned char *)malloc(lineLen);
+
+	for(int i = info.Height-1; i >= 0; i--) {
+		num = fread(line, lineLen, 1, f);
+		if (num != 1) { fclose(f); return false; }
+		unsigned char *src = line;
+		unsigned char *dest = mRGB + i*info.Width*3;
+		for(unsigned int j = 0; j < info.Width; j++) {
+			unsigned char r,g,b;
+			b = *src++; g = *src++; r = *src++;
+			*dest++ = r; *dest++ = g; *dest++ = b;
+		}
+	}
+
+	free(line);
+	fclose(f);
+
+	return true;
+}
+
+// -------------------------------------------------------------------
+bool saveBmpRBG(const char *filename, int width, int height, void *data)
+{
+	FILE *f = fopen(filename, "wb");
+	if (!f) return false;
+
+	// todo : works on pcs only, swap correctly if big endian 
+	BMPHEADER header;
+	header.Type = 'MB';
+	header.Size = sizeof(BMPINFO);
+	header.Reserved1 = 0;
+	header.Reserved2 = 0;
+	header.OffBits = sizeof(BMPHEADER) + sizeof(BMPINFO);
+	fwrite(&header, sizeof(BMPHEADER), 1, f);
+
+	BMPINFO info;
+	info.Size = sizeof(BMPINFO);
+	info.Width = width;
+	info.Height = height;
+	info.Planes = 1;
+	info.BitCount = 24;
+	info.Compression = BI_RGB;
+	info.XPelsPerMeter = 4000;
+	info.YPelsPerMeter = 4000;
+	info.ClrUsed = 0;
+	info.ClrImportant = 0;
+	fwrite(&info, sizeof(info), 1, f);
+
+	// padded to multiple of 4
+	int lineLen = (((info.Width * (info.BitCount>>3)) + 3)>>2)<<2;
+	info.SizeImage = lineLen * height;
+
+	unsigned char *line = (unsigned char *)malloc(lineLen);
+
+	for(int i = 0; i < height; i++) {
+		unsigned char *src = (unsigned char*)data + i*width*3;
+		unsigned char *dest = line;
+		for(int j = 0; j < width; j++) {
+			unsigned char r,g,b;
+			r = *src++; g = *src++; b = *src++;
+			*dest++ = b; *dest++ = g; *dest++ = r;
+		}
+		for (int j = 3*width; j < lineLen; j++)
+			*dest++ = 0;
+		fwrite(line, lineLen, 1, f);
+	}
+
+	free(line);
+	fclose(f);
+
+	return true;
+}
+\ No newline at end of file