Function PsdGetData

DevIL/src-IL/src/il_psd.cpp:628–792

ILboolean PsdGetData(PSDHEAD *Head, void *Buffer, ILboolean Compressed)
{
	ILuint		c, x, y, i, Size, ReadResult, NumChan;
	ILubyte		*Channel = NULL;
	ILushort	*ShortPtr;
	ILuint		*ChanLen = NULL;

	// Added 01-07-2009: This is needed to correctly load greyscale and
	//  paletted images.
	switch (Head->Mode)
	{
		case 1:
		case 2:
			NumChan = 1;
			break;
		default:
			NumChan = 3;
	}

	Channel = (ILubyte*)ialloc(Head->Width * Head->Height * iCurImage->Bpc);
	if (Channel == NULL) {
		return IL_FALSE;
	}
	ShortPtr = (ILushort*)Channel;

	// @TODO: Add support for this in, though I have yet to run across a .psd
	//	file that uses this.
	if (Compressed && iCurImage->Type == IL_UNSIGNED_SHORT) {
		ilSetError(IL_FORMAT_NOT_SUPPORTED);
		return IL_FALSE;
	}

	if (!Compressed) {
		if (iCurImage->Bpc == 1) {
			for (c = 0; c < NumChan; c++) {
				i = 0;
				if (iread(Channel, Head->Width * Head->Height, 1) != 1) {
					ifree(Channel);
					return IL_FALSE;
				}
				for (y = 0; y < Head->Height * iCurImage->Bps; y += iCurImage->Bps) {
					for (x = 0; x < iCurImage->Bps; x += iCurImage->Bpp, i++) {
						iCurImage->Data[y + x + c] = Channel[i];
					}
				}
			}
			// Accumulate any remaining channels into a single alpha channel
			//@TODO: This needs to be changed for greyscale images.
			for (; c < Head->Channels; c++) {
				i = 0;
				if (iread(Channel, Head->Width * Head->Height, 1) != 1) {
					ifree(Channel);
					return IL_FALSE;
				}
				for (y = 0; y < Head->Height * iCurImage->Bps; y += iCurImage->Bps) {
					for (x = 0; x < iCurImage->Bps; x += iCurImage->Bpp, i++) {
						float curVal = ubyte_to_float(iCurImage->Data[y + x + 3]);
						float newVal = ubyte_to_float(Channel[i]);