//TODO:
// * Modify lzhuf.c's Encode() so we don't have to use temp files.
// * Handle go errors.
func encDec(data []byte, encode bool) []byte {
// Create temp files
outf, _ := ioutil.TempFile("", "lzhuf")
inf, _ := ioutil.TempFile("", "lzhuf")
defer func() {
outf.Close()
os.Remove(outf.Name())
os.Remove(inf.Name())
}()
// Copy data to in file
io.Copy(inf, bytes.NewBuffer(data))
inf.Sync()
inf.Close()
// Encode/Decode the inf to outf
lzs := C.AllocStruct()
var retval C.int
if encode {
retval = C.Encode(0, C.CString(inf.Name()), C.CString(outf.Name()), lzs, 1)
} else {
retval = C.Decode(0, C.CString(inf.Name()), C.CString(outf.Name()), lzs, 1)
}
C.FreeStruct(lzs)
if retval < 0 {
panic("lzhuf encode/decode error")
}
// Read the compressed/decompressed data from outf
b, _ := ioutil.ReadAll(outf)
return b
}
func Decode(r io.Reader) (f *audio.File, e error) {
f = &audio.File{}
c := &container{
file: f,
}
c.decoder = C.FLAC__stream_decoder_new()
C.FLAC__stream_decoder_set_md5_checking(c.decoder, C.FLAC__bool(0))
c.input.buffer, e = ioutil.ReadAll(r)
if e != nil {
return
}
C.Decode(unsafe.Pointer(c))
return
}