C / C++ / MFC

alfalf3 wrote:

Have you experience the same problem?

alfalf3 wrote:

any idea on how to do so?

BOOL SaveBmpTo12BitsFile(HBITMAP hBmp, HANDLE hFile);
HBITMAP LoadBmpFrom12BitsFile(HANDLE hFile);

// Encoding

unsigned short s1 = 10;
unsigned short s2 = 20;

BYTE b1 = (s1 & 0x0FF0) >> 4;

BYTE b2 = (s1 & 0x000F) << 4;
b2 |= (s2 & 0x0F00) >> 8;

BYTE b3 = s2 & 0x00FF;

// Decoding

s1 = b1 << 4;
s1 |= (b2 & 0xF0) >> 4;

s2 = (b2 & 0x0F) << 8;
s2 |= b3;

typedef struct _PackedUShort
{
 unsigned char b0 : 4;
 unsigned char b1 : 4;
 unsigned char b2 : 4;
 unsigned char b3 : 4;
} PackedUShort;

typedef union 
{
 unsigned short us;
 PackedUShort pack;
} PackedData;

packBuf = (PackedData*) myImageBuffer;

// allocate new buffer
resultBuf = (PackedData*) malloc(sizeof(PackedData) * newSize);

for(i=0; i<imagesize;>{
  int position = j % 4;

  switch(position) 
  {
    case 0:
	(*resultBuf).pack.b0 = (*packBuf).pack.b0;
	(*resultBuf).pack.b1 = (*packBuf).pack.b1;
	(*resultBuf).pack.b2 = (*packBuf).pack.b2;
	break;
    case 1:
	(*resultBuf).pack.b1 = (*packBuf).pack.b0;
	(*resultBuf).pack.b2 = (*packBuf).pack.b1;
	(*resultBuf).pack.b3 = (*packBuf).pack.b2;
	resultBuf++;
	break;
    case 2:
	(*resultBuf).pack.b2 = (*packBuf).pack.b0;
	(*resultBuf).pack.b3 = (*packBuf).pack.b1;
	resultBuf++;
	(*resultBuf).pack.b0 = (*packBuf).pack.b2;
	break;
    case 3:
	(*resultBuf).pack.b3 = (*packBuf).pack.b0;
	resultBuf++;
	(*resultBuf).pack.b0 = (*packBuf).pack.b1;
	(*resultBuf).pack.b1 = (*packBuf).pack.b2;
	break;
    }
    j+=3;
    packBuf++;
  }
}

Varghese Paul M wrote:

But the debugger is not showing the value unless I call CharToOemW. What CharToOem does on that buffer?

CPallini wrote:

UNICODE.