Method Len

testutil/image_hash.go:167–176

Len returns the length of the hash data (excluding type byte)

()

// Len returns the length of the hash data (excluding type byte)
func (h *ImageHash) Len() int {
	switch h.hashType {
	case HashTypeSHA256:
		return 32
	case HashTypeDct:
		return len(h.dctHash) * 4 // float32 is 4 bytes
	default:
		return 0
	}
}

// calcDct2Hash calculates the DCT hash for the given image data buffer
func (h *ImageHash) calcDct2Hash(buf []byte) error {