Function iGetOS2Bmp

DevIL/src-IL/src/il_bmp.cpp:726–841

//deleted ilReadRLE4Bmp() USE_POINTER version

ILboolean iGetOS2Bmp(OS2_HEAD *Header)
{
	ILuint	PadSize, Read, i, j, k, c;
	ILubyte	ByteData;

	if (Header->cBitCount == 1) {
		if (!ilTexImage(Header->cx, Header->cy, 1, 1, IL_COLOUR_INDEX, IL_UNSIGNED_BYTE, NULL)) {
			return IL_FALSE;
		}
		iCurImage->Origin = IL_ORIGIN_LOWER_LEFT;

		iCurImage->Pal.Palette = (ILubyte*)ialloc(2 * 3);
		if (iCurImage->Pal.Palette == NULL) {
			return IL_FALSE;
		}
		iCurImage->Pal.PalSize = 2 * 3;
		iCurImage->Pal.PalType = IL_PAL_BGR24;

		if (iread(iCurImage->Pal.Palette, 1, 2 * 3) != 6)
			return IL_FALSE;

		PadSize = ((32 - (iCurImage->Width % 32)) / 8) % 4;  // Has to truncate.
		iseek(Header->DataOff, IL_SEEK_SET);

		for (j = 0; j < iCurImage->Height; j++) {
			Read = 0;
			for (i = 0; i < iCurImage->Width; ) {
				if (iread(&ByteData, 1, 1) != 1)
					return IL_FALSE;
				Read++;
				k = 128;
				for (c = 0; c < 8; c++) {
					iCurImage->Data[j * iCurImage->Width + i] =
						(!!(ByteData & k) == 1 ? 1 : 0);
					k >>= 1;
					if (++i >= iCurImage->Width)
						break;
				}
			}
			iseek(PadSize, IL_SEEK_CUR);
		}
		return IL_TRUE;
	}

	if (Header->cBitCount == 4) {
		if (!ilTexImage(Header->cx, Header->cy, 1, 1, IL_COLOUR_INDEX, IL_UNSIGNED_BYTE, NULL)) {
			return IL_FALSE;
		}
		iCurImage->Origin = IL_ORIGIN_LOWER_LEFT;

		iCurImage->Pal.Palette = (ILubyte*)ialloc(16 * 3);
		if (iCurImage->Pal.Palette == NULL) {
			return IL_FALSE;
		}
		iCurImage->Pal.PalSize = 16 * 3;
		iCurImage->Pal.PalType = IL_PAL_BGR24;

		if (iread(iCurImage->Pal.Palette, 1, 16 * 3) != 16*3)