C++ (Cpp) channelReadMixedの例

コード例 #1

ファイル: il_pic.c プロジェクト: AMDmi3/DevIL

ILuint readScanline(ILubyte *scan, ILint width, CHANNEL *channel, ILint bytes)
{
	ILint		noCol;
	ILint		off[4];
	ILuint		status=0;

	while (channel) {
		noCol = 0;
		if(channel->Chan & PIC_RED_CHANNEL) {
			off[noCol] = 0;
			noCol++;
		}
		if(channel->Chan & PIC_GREEN_CHANNEL) {
			off[noCol] = 1;
			noCol++;
		}
		if(channel->Chan & PIC_BLUE_CHANNEL) {
			off[noCol] = 2;
			noCol++;
		}
		if(channel->Chan & PIC_ALPHA_CHANNEL) {
			off[noCol] = 3;
			noCol++;
			//@TODO: Find out if this is possible.
			if (bytes == 3)  // Alpha channel in a 24-bit image.  Do not know what to do with this.
				return 0;
		}

		switch(channel->Type & 0x0F)
		{
			case PIC_UNCOMPRESSED:
				status = channelReadRaw(scan, width, noCol, off, bytes);
				break;
			case PIC_PURE_RUN_LENGTH:
				status = channelReadPure(scan, width, noCol, off, bytes);
				break;
			case PIC_MIXED_RUN_LENGTH:
				status = channelReadMixed(scan, width, noCol, off, bytes);
				break;
		}
		if (!status)
			break;

		channel = (CHANNEL*)channel->Next;
	}
	return status;
}

コード例 #2

ILuint readScanline(ILubyte *scan, ILint width, CHANNEL *channel, ILint bytes)
{
	ILint		noCol;
	ILint		off[4];
	ILuint		status=0;

	while (channel) {
		noCol = 0;
//#ifndef sgi
		if(channel->Chan & PIC_RED_CHANNEL) {
			off[noCol] = 0;
			noCol++;
		}
		if(channel->Chan & PIC_GREEN_CHANNEL) {
			off[noCol] = 1;
			noCol++;
		}
		if(channel->Chan & PIC_BLUE_CHANNEL) {
			off[noCol] = 2;
			noCol++;
		}
		if(channel->Chan & PIC_ALPHA_CHANNEL) {
			off[noCol] = 3;
			noCol++;
		}
/*#else
		if(channel->channels & PIC_RED_CHANNEL) {
			off[noCol] = 3;
			noCol++;
		}
		if(channel->channels & PIC_GREEN_CHANNEL) {
			off[noCol] = 2;
			noCol++;
		}
		if(channel->channels & PIC_BLUE_CHANNEL) {
			off[noCol] = 1;
			noCol++;
		}
		if(channel->channels & PIC_ALPHA_CHANNEL) {
			off[noCol] = 0;
			noCol++;
		}
#endif*/

		switch(channel->Type & 0x0F) {
			case PIC_UNCOMPRESSED:
				status = channelReadRaw(scan, width, noCol, off, bytes);
				break;
			case PIC_PURE_RUN_LENGTH:
				status = channelReadPure(scan, width, noCol, off, bytes);
				break;
			case PIC_MIXED_RUN_LENGTH:
				status = channelReadMixed(scan, width, noCol, off, bytes);
				break;
		}
		if (!status)
			break;

		channel = channel->Next;
	}
	return status;
}