func HuffmanDecodeSpec(c gospec.Context) {
c.Specify("Basic huffman decode", func() {
var codebook vorbis.Codebook
codebook.Entries = make([]vorbis.CodebookEntry, 8)
codebook.Entries[0].Length = 2
codebook.Entries[1].Length = 4
codebook.Entries[2].Length = 4
codebook.Entries[3].Length = 4
codebook.Entries[4].Length = 4
codebook.Entries[5].Length = 2
codebook.Entries[6].Length = 3
codebook.Entries[7].Length = 3
codebook.AssignCodewords()
v := []uint8{0x5F, 0x6E, 0x2A, 0x00}
br := vorbis.MakeBitReader(bytes.NewBuffer(v))
c.Expect(codebook.DecodeScalar(br), Equals, 7)
c.Expect(codebook.DecodeScalar(br), Equals, 6)
c.Expect(codebook.DecodeScalar(br), Equals, 5)
c.Expect(codebook.DecodeScalar(br), Equals, 4)
c.Expect(codebook.DecodeScalar(br), Equals, 3)
c.Expect(codebook.DecodeScalar(br), Equals, 2)
c.Expect(codebook.DecodeScalar(br), Equals, 1)
c.Expect(codebook.DecodeScalar(br), Equals, 0)
})
}
func BitReaderSpec(c gospec.Context) {
v := []uint8{1, 1, 3, 0, 0, 9}
// 00001001 00000000 00000000 00000011 00000001 00000001
// 1
// 001 0000000
// 001 00000000 00000000 00000011 00000
// 00001
c.Specify("Bitreader reads from an io.Reader properly", func() {
br := vorbis.MakeBitReader(bytes.NewBuffer(v))
c.Expect(uint32(0x1), Equals, br.ReadBits(1))
c.Expect(uint32(0x80), Equals, br.ReadBits(10))
c.Expect(uint32(0x20000060), Equals, br.ReadBits(32))
c.Expect(uint32(0x1), Equals, br.ReadBits(5))
})
}