Change for loop to Buffer.MemoryCopy

[zhoupc2015]

To improve performance, add the manually controllable macro HAS_SYSTEM_MEMORY_COPY, which can change the code from a for loop to the form of Buffer.MemoryCopy. For example, the method ToArray of the structure bytearray61440: public byte[] ToArray() { var a = new byte[61440]; for (uint i = 0; i < 61440; i++) a[i] = [i]; return a; } becomes public byte[] ToArray() { var a = new byte[61440];fixed (byte* src = _, dst = a){ Buffer.MemoryCopy(src, dst, 61440, 61440); } return a; }

[zhoupc2015]

sorry, I should remove the commits of [Merge branch 'master']

[Ruslan-B]

you think faster? i did consider that but from .net5 makes no difference - in aspect of api - it is intresting, just wander if it actually is but have to powerfull system cant mesure it reliably. across versions of ffmpeg api.

[zhoupc2015]

You are right, it's great to learn from you, thank you! I ran my test method a little more, and it’s exactly what you said. I’m sorry.

[Ruslan-B]

No sorry needed. we come covered it here as community ;)