Function scale2x4_8_mmx

src/Engine/Scalers/scale2x.cpp:1424–1434

* Scale by a factor of 2x4 a row of pixels of 8 bits. * This function operates like scale2x_8_mmx() but with an expansion * factor of 2x4 instead of 2x2. */

 * factor of 2x4 instead of 2x2.
 */
void scale2x4_8_mmx(scale2x_uint8* dst0, scale2x_uint8* dst1, scale2x_uint8* dst2, scale2x_uint8* dst3, const scale2x_uint8* src0, const scale2x_uint8* src1, const scale2x_uint8* src2, unsigned count)
{
	if (count % 8 != 0 || count < 16) {
		scale2x4_8_def(dst0, dst1, dst2, dst3, src0, src1, src2, count);
	} else {
		scale2x_8_mmx_border(dst0, src0, src1, src2, count);
		scale2x_8_def_center(dst1, src0, src1, src2, count);
		scale2x_8_def_center(dst2, src0, src1, src2, count);
		scale2x_8_mmx_border(dst3, src2, src1, src0, count);
	}
}

/**
 * Scale by a factor of 2x4 a row of pixels of 16 bits.