You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: flac_streaminfo.go
    path of file: ./repos/fq/format/flac
    
    the code of the file until where you have to start completion: package flac

import (
	"github.com/wader/fq/format"
	"github.com/wader/fq/pkg/decode"
	"github.com/wader/fq/pkg/interp"
	"github.com/wader/fq/pkg/scalar"
)

func init() {
	interp.RegisterFormat(
		format.FLAC_Streaminfo,
		&decode.Format{
			Description: "FLAC streaminfo",
			DecodeFn:    streaminfoDecode,
		})
}

func streaminfoDecode(d *decode.D) any {
	d.FieldU16("minimum_block_size")
	d.FieldU16("maximum_block_size")
	d.FieldU24("minimum_frame_size")
	d.FieldU24("maximum_frame_size")
	sampleRate := d.FieldU("sample_rate", 20)
	// <3> (number of channels)-1. FLAC supports from 1 to 8 channels
	d.FieldU3("channels", scalar.UintActualAdd(1))
	// <5> (bits per sample)-1. 
    
func streaminfoDecode(d *decode.D) any {
	d.FieldU16("minimum_block_size")
	d.FieldU16("maximum_block_size")
	d.FieldU24("minimum_frame_size")
	d.FieldU24("maximum_frame_size")
	sampleRate := d.FieldU("sample_rate", 20)
	// <3> (number of channels)-1. FLAC supports from 1 to 8 channels
	d.FieldU3("channels", scalar.UintActualAdd(1))
	// <5> (bits per sample)-1. FLAC supports from 4 to 32 bits per sample. Currently the reference encoder and decoders only support up to 24 bits per sample.
	bitsPerSample := d.FieldU5("bits_per_sample", scalar.UintActualAdd(1))
	totalSamplesInStream := d.FieldU("total_samples_in_stream", 36)
	md5BR := d.FieldRawLen("md5", 16*8, scalar.RawHex)
	md5b := d.ReadAllBits(md5BR)

	return format.FLAC_Streaminfo_Out{
		StreamInfo: format.FLAC_Stream_Info{
			SampleRate:           sampleRate,
			BitsPerSample:        bitsPerSample,
			TotalSamplesInStream: totalSamplesInStream,
			MD5:                  md5b,
		},
	}
}