CUETools.Codecs.FLAKE.FlakeWriter.measure_frame_size C# (CSharp) Method

		unsafe uint measure_frame_size(FlacFrame frame, bool do_midside)
		{
			// crude estimation of header/footer size
			uint total = (uint)(32 + ((BitReader.log2i(frame_count) + 4) / 5) * 8 + (eparams.variable_block_size != 0 ? 16 : 0) + 16);

			if (do_midside)
			{
				uint bitsBest = AudioSamples.UINT32_MAX;
				ChannelMode modeBest = ChannelMode.LeftRight;

				if (bitsBest > frame.subframes[2].best.size + frame.subframes[3].best.size)
				{
					bitsBest = frame.subframes[2].best.size + frame.subframes[3].best.size;
					modeBest = ChannelMode.MidSide;
				}
				if (bitsBest > frame.subframes[3].best.size + frame.subframes[1].best.size)
				{
					bitsBest = frame.subframes[3].best.size + frame.subframes[1].best.size;
					modeBest = ChannelMode.RightSide;
				}
				if (bitsBest > frame.subframes[3].best.size + frame.subframes[0].best.size)
				{
					bitsBest = frame.subframes[3].best.size + frame.subframes[0].best.size;
					modeBest = ChannelMode.LeftSide;
				}
				if (bitsBest > frame.subframes[0].best.size + frame.subframes[1].best.size)
				{
					bitsBest = frame.subframes[0].best.size + frame.subframes[1].best.size;
					modeBest = ChannelMode.LeftRight;
				}
				frame.ch_mode = modeBest;
				return total + bitsBest;
			}

			for (int ch = 0; ch < channels; ch++)
				total += frame.subframes[ch].best.size;
			return total;
		}