package format

import (
	"git.gammaspectra.live/S.O.N.G/Kirika/audio"
	"io"
)

type Format interface {
	// Identify checks whether a format is of a type. peek includes a few first bytes, extension is the lowercase file extension without a dot.
	Identify(peek []byte, extension string) bool

	// Open Opens a stream and decodes it into an audio.Stream
	Open(r io.ReadSeekCloser, blockSize int) (*audio.Stream, error)
}

type AnalyzerFormat interface {
	Format
	// OpenAnalyzer Opens a stream and decodes it into an audio.Stream, and additionally copy AnalyzerPacket back
	OpenAnalyzer(r io.ReadSeekCloser, blockSize int) (*audio.Stream, chan *AnalyzerPacket, error)
}

type WriteSeekCloser interface {
	io.Writer
	io.Closer
	io.Seeker
}

type Encoder interface {
	// Encode Receives a stream and encodes it into a writer
	Encode(stream *audio.Stream, writer WriteSeekCloser) error
}

type AnalyzerPacket struct {
	//Samples interleaved samples
	Samples    []int32
	Channels   int
	SampleRate int
	BitDepth   int
}