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enc_test.go
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enc_test.go
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package flac_test
import (
"bytes"
"io"
"io/ioutil"
"testing"
"github.com/mewkiz/flac"
"github.com/mewkiz/flac/meta"
)
func TestEncode(t *testing.T) {
paths := []string{
// metadata test cases.
"meta/testdata/input-SCPAP.flac",
"meta/testdata/input-SCVA.flac",
"meta/testdata/input-SCVPAP.flac",
"meta/testdata/input-VA.flac",
"meta/testdata/input-SCVAUP.flac", // empty metadata block (of type 0x7e)
"meta/testdata/input-SVAUP.flac", // empty metadata block (of type 0x7e)
"meta/testdata/silence.flac",
// flac test cases.
"testdata/19875.flac", // prediction method 3 (FIR)
"testdata/44127.flac", // prediction method 3 (FIR)
// TODO: fix diff.
//"testdata/59996.flac",
"testdata/80574.flac", // prediction method 3 (FIR)
// TODO: fix diff.
//"testdata/172960.flac",
// TODO: fix diff.
//"testdata/189983.flac",
// TODO: fix: invalid number of samples per channel; expected >= 16 && <= 65535, got 1
//"testdata/191885.flac",
// TODO: fix diff.
//"testdata/212768.flac",
"testdata/220014.flac", // prediction method 2 (Fixed)
"testdata/243749.flac", // prediction method 2 (Fixed)
// TODO: fix diff.
//"testdata/256529.flac",
"testdata/257344.flac", // prediction method 3 (FIR)
"testdata/8297-275156-0011.flac", // prediction method 3 (FIR)
"testdata/love.flac", // wasted bits
// IETF test cases.
// TODO: fix diff.
//"testdata/flac-test-files/subset/01 - blocksize 4096.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/02 - blocksize 4608.flac",
// TODO: fix: invalid number of samples per channel; expected >= 16 && <= 65535, got 12
//"testdata/flac-test-files/subset/03 - blocksize 16.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/04 - blocksize 192.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/05 - blocksize 254.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/06 - blocksize 512.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/07 - blocksize 725.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/08 - blocksize 1000.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/09 - blocksize 1937.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/10 - blocksize 2304.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/11 - partition order 8.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/12 - qlp precision 15 bit.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/13 - qlp precision 2 bit.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/14 - wasted bits.flac",
"testdata/flac-test-files/subset/15 - only verbatim subframes.flac",
// TODO: implement encoding of escaped partitions
//"testdata/flac-test-files/subset/16 - partition order 8 containing escaped partitions.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/17 - all fixed orders.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/18 - precision search.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/19 - samplerate 35467Hz.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/20 - samplerate 39kHz.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/21 - samplerate 22050Hz.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/22 - 12 bit per sample.flac",
// TODO: fix: invalid number of samples per channel; expected >= 16 && <= 65535, got 5
//"testdata/flac-test-files/subset/23 - 8 bit per sample.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/24 - variable blocksize file created with flake revision 264.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/25 - variable blocksize file created with flake revision 264, modified to create smaller blocks.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/26 - variable blocksize file created with CUETools.Flake 2.1.6.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/27 - old format variable blocksize file created with Flake 0.11.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/28 - high resolution audio, default settings.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/29 - high resolution audio, blocksize 16384.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/30 - high resolution audio, blocksize 13456.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/31 - high resolution audio, using only 32nd order predictors.flac",
// TODO: implement encoding of escaped partitions.
//"testdata/flac-test-files/subset/32 - high resolution audio, partition order 8 containing escaped partitions.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/33 - samplerate 192kHz.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/34 - samplerate 192kHz, using only 32nd order predictors.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/35 - samplerate 134560Hz.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/36 - samplerate 384kHz.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/37 - 20 bit per sample.flac",
"testdata/flac-test-files/subset/38 - 3 channels (3.0).flac",
"testdata/flac-test-files/subset/39 - 4 channels (4.0).flac",
"testdata/flac-test-files/subset/40 - 5 channels (5.0).flac",
"testdata/flac-test-files/subset/41 - 6 channels (5.1).flac",
"testdata/flac-test-files/subset/42 - 7 channels (6.1).flac",
"testdata/flac-test-files/subset/43 - 8 channels (7.1).flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/44 - 8-channel surround, 192kHz, 24 bit, using only 32nd order predictors.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/45 - no total number of samples set.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/46 - no min-max framesize set.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/47 - only STREAMINFO.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/48 - Extremely large SEEKTABLE.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/49 - Extremely large PADDING.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/50 - Extremely large PICTURE.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/51 - Extremely large VORBISCOMMENT.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/52 - Extremely large APPLICATION.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/53 - CUESHEET with very many indexes.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/54 - 1000x repeating VORBISCOMMENT.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/55 - file 48-53 combined.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/56 - JPG PICTURE.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/57 - PNG PICTURE.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/58 - GIF PICTURE.flac",
// TODO: fix diff.
//"testdata/flac-test-files/subset/59 - AVIF PICTURE.flac",
"testdata/flac-test-files/subset/60 - mono audio.flac",
"testdata/flac-test-files/subset/61 - predictor overflow check, 16-bit.flac",
"testdata/flac-test-files/subset/62 - predictor overflow check, 20-bit.flac",
"testdata/flac-test-files/subset/63 - predictor overflow check, 24-bit.flac",
// TODO: implement encoding of escaped partitions.
//"testdata/flac-test-files/subset/64 - rice partitions with escape code zero.flac",
}
for _, path := range paths {
t.Run(path, func(t *testing.T) {
// Decode source file.
stream, err := flac.ParseFile(path)
if err != nil {
t.Fatalf("%q: unable to parse FLAC file; %v", path, err)
}
defer stream.Close()
// Open encoder for FLAC stream.
out := new(bytes.Buffer)
enc, err := flac.NewEncoder(out, stream.Info, stream.Blocks...)
if err != nil {
t.Fatalf("%q: unable to create encoder for FLAC stream; %v", path, err)
}
// Encode audio samples.
for {
frame, err := stream.ParseNext()
if err != nil {
if err == io.EOF {
break
}
t.Fatalf("%q: unable to parse audio frame of FLAC stream; %v", path, err)
}
if err := enc.WriteFrame(frame); err != nil {
t.Fatalf("%q: unable to encode audio frame of FLAC stream; %v", path, err)
}
}
// Close encoder and flush pending writes.
if err := enc.Close(); err != nil {
t.Fatalf("%q: unable to close encoder for FLAC stream; %v", path, err)
}
// Compare source and destination FLAC streams.
want, err := ioutil.ReadFile(path)
if err != nil {
t.Fatalf("%q: unable to read file; %v", path, err)
}
got := out.Bytes()
if !bytes.Equal(got, want) {
//if err := ioutil.WriteFile("/tmp/got.flac", got, 0o644); err != nil {
// panic(err)
//}
t.Fatalf("%q: content mismatch; expected % X, got % X", path, want, got)
}
})
}
}
func TestEncodeComment(t *testing.T) {
// Decode FLAC file.
const path = "meta/testdata/input-VA.flac"
src, err := flac.ParseFile(path)
if err != nil {
t.Fatalf("unable to parse input FLAC file; %v", err)
}
defer src.Close()
// Add custom vorbis comment.
const want = "FLAC encoding test case"
for _, block := range src.Blocks {
if comment, ok := block.Body.(*meta.VorbisComment); ok {
comment.Vendor = want
}
}
// Open encoder for FLAC stream.
out := new(bytes.Buffer)
enc, err := flac.NewEncoder(out, src.Info, src.Blocks...)
if err != nil {
t.Fatalf("%q: unable to create encoder for FLAC stream; %v", path, err)
}
// Encode audio samples.
for {
frame, err := src.ParseNext()
if err != nil {
if err == io.EOF {
break
}
t.Fatalf("%q: unable to parse audio frame of FLAC stream; %v", path, err)
}
if err := enc.WriteFrame(frame); err != nil {
t.Fatalf("%q: unable to encode audio frame of FLAC stream; %v", path, err)
}
}
// Close encoder and flush pending writes.
if err := enc.Close(); err != nil {
t.Fatalf("%q: unable to close encoder for FLAC stream; %v", path, err)
}
// Parse encoded FLAC file.
stream, err := flac.Parse(out)
if err != nil {
t.Fatalf("unable to parse output FLAC file; %v", err)
}
defer stream.Close()
// Add custom vorbis comment.
for _, block := range stream.Blocks {
if comment, ok := block.Body.(*meta.VorbisComment); ok {
got := comment.Vendor
if got != want {
t.Errorf("Vorbis comment mismatch; expected %q, got %q", want, got)
continue
}
}
}
}