DataHoarder
b703396844
All checks were successful
continuous-integration/drone/push Build is passing
993 lines
29 KiB
Go
993 lines
29 KiB
Go
package main
|
|
|
|
import (
|
|
"bytes"
|
|
"crypto/sha256"
|
|
"encoding/binary"
|
|
"encoding/hex"
|
|
"encoding/json"
|
|
"errors"
|
|
"fmt"
|
|
"git.gammaspectra.live/S.O.N.G/Kirika/audio"
|
|
"git.gammaspectra.live/S.O.N.G/Kirika/audio/filter"
|
|
"git.gammaspectra.live/S.O.N.G/Kirika/audio/format/guess"
|
|
"git.gammaspectra.live/S.O.N.G/Kirika/audio/packetizer"
|
|
"git.gammaspectra.live/S.O.N.G/Kirika/audio/queue"
|
|
"git.gammaspectra.live/S.O.N.G/Kirika/audio/replaygain"
|
|
"github.com/dhowden/tag"
|
|
"io"
|
|
"log"
|
|
"net/http"
|
|
"os"
|
|
"path"
|
|
"runtime"
|
|
"strconv"
|
|
"strings"
|
|
"sync"
|
|
"sync/atomic"
|
|
"time"
|
|
)
|
|
|
|
const maxBufferSize = 10
|
|
|
|
type QueueTrackEntry struct {
|
|
QueueIdentifier queue.QueueIdentifier
|
|
Path string
|
|
Metadata struct {
|
|
Title interface{} `json:"title"`
|
|
Album interface{} `json:"album"`
|
|
Artist interface{} `json:"artist"`
|
|
Art string `json:"art"`
|
|
ReplayGain struct {
|
|
TrackPeak float64 `json:"track_peak"`
|
|
TrackGain float64 `json:"track_gain"`
|
|
AlbumPeak float64 `json:"album_peak"`
|
|
AlbumGain float64 `json:"album_gain"`
|
|
} `json:"replay_gain,omitempty"`
|
|
}
|
|
reader io.ReadSeekCloser
|
|
source audio.Source
|
|
|
|
original map[string]interface{}
|
|
}
|
|
|
|
func (e *QueueTrackEntry) Title() string {
|
|
if strVal, ok := e.Metadata.Title.(string); ok {
|
|
return strVal
|
|
} else if intVal, ok := e.Metadata.Title.(int); ok {
|
|
return strconv.Itoa(intVal)
|
|
}
|
|
|
|
return ""
|
|
}
|
|
|
|
func (e *QueueTrackEntry) Album() string {
|
|
if strVal, ok := e.Metadata.Album.(string); ok {
|
|
return strVal
|
|
} else if intVal, ok := e.Metadata.Album.(int); ok {
|
|
return strconv.Itoa(intVal)
|
|
}
|
|
|
|
return ""
|
|
}
|
|
|
|
func (e *QueueTrackEntry) Artist() string {
|
|
if strVal, ok := e.Metadata.Artist.(string); ok {
|
|
return strVal
|
|
} else if intVal, ok := e.Metadata.Artist.(int); ok {
|
|
return strconv.Itoa(intVal)
|
|
}
|
|
|
|
return ""
|
|
}
|
|
|
|
func (e *QueueTrackEntry) Load() error {
|
|
if e.source != nil {
|
|
return nil
|
|
}
|
|
|
|
fileName := path.Base(e.Path)
|
|
|
|
if len(e.Path) > 4 && e.Path[:4] == "http" {
|
|
s, err := NewRangeReadSeekCloser(e.Path)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
fileName = s.GetFileName()
|
|
|
|
runtime.SetFinalizer(s, (*RangeReadSeekCloser).Close)
|
|
|
|
e.reader = s
|
|
} else {
|
|
f, err := os.Open(e.Path)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
runtime.SetFinalizer(f, (*os.File).Close)
|
|
|
|
e.reader = f
|
|
}
|
|
|
|
if e.reader == nil {
|
|
return errors.New("could not find stream opener")
|
|
}
|
|
|
|
meta, err := tag.ReadFrom(e.reader)
|
|
if err != nil {
|
|
err = nil
|
|
}
|
|
if _, err = e.reader.Seek(0, io.SeekStart); err != nil {
|
|
return err
|
|
}
|
|
|
|
decoders, err := guess.GetDecoders(e.reader, fileName)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
source, err := guess.Open(e.reader, decoders)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if source == nil {
|
|
return fmt.Errorf("could not find decoder for %s", e.Path)
|
|
}
|
|
|
|
e.source = source
|
|
|
|
//apply tags found on file
|
|
if meta != nil {
|
|
if e.Title() == "" {
|
|
e.Metadata.Title = meta.Title()
|
|
}
|
|
if e.Album() == "" {
|
|
e.Metadata.Album = meta.Album()
|
|
}
|
|
if e.Artist() == "" {
|
|
e.Metadata.Artist = meta.Artist()
|
|
}
|
|
if e.Artist() == "" {
|
|
e.Metadata.Artist = meta.AlbumArtist()
|
|
}
|
|
|
|
tags := meta.Raw()
|
|
var strValue string
|
|
var value interface{}
|
|
var ok bool
|
|
|
|
getDb := func(strValue string) (ret float64) {
|
|
ret, _ = strconv.ParseFloat(strings.TrimSpace(strings.TrimSuffix(strings.ToLower(strValue), "db")), 64)
|
|
return
|
|
}
|
|
|
|
if e.Metadata.ReplayGain.TrackPeak == 0 {
|
|
if value, ok = tags["replaygain_track_gain"]; ok {
|
|
if strValue, ok = value.(string); ok {
|
|
e.Metadata.ReplayGain.TrackGain = getDb(strValue)
|
|
}
|
|
}
|
|
if value, ok = tags["replaygain_track_peak"]; ok {
|
|
if strValue, ok = value.(string); ok {
|
|
e.Metadata.ReplayGain.TrackPeak = getDb(strValue)
|
|
}
|
|
}
|
|
if value, ok = tags["replaygain_album_gain"]; ok {
|
|
if strValue, ok = value.(string); ok {
|
|
e.Metadata.ReplayGain.AlbumGain = getDb(strValue)
|
|
}
|
|
}
|
|
if value, ok = tags["replaygain_album_peak"]; ok {
|
|
if strValue, ok = value.(string); ok {
|
|
e.Metadata.ReplayGain.AlbumPeak = getDb(strValue)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
type QueueMetadataPacket struct {
|
|
sampleNumber int64
|
|
TrackEntry *QueueTrackEntry
|
|
}
|
|
|
|
func (p *QueueMetadataPacket) KeepMode() packetizer.KeepMode {
|
|
return packetizer.KeepLast
|
|
}
|
|
|
|
func (p *QueueMetadataPacket) GetStartSampleNumber() int64 {
|
|
return p.sampleNumber
|
|
}
|
|
|
|
func (p *QueueMetadataPacket) GetEndSampleNumber() int64 {
|
|
return p.sampleNumber
|
|
}
|
|
|
|
func (p *QueueMetadataPacket) Category() int64 {
|
|
return -1
|
|
}
|
|
|
|
func (p *QueueMetadataPacket) GetData() []byte {
|
|
return nil
|
|
}
|
|
|
|
type Queue struct {
|
|
NowPlaying chan *QueueTrackEntry
|
|
QueueEmpty chan *QueueTrackEntry
|
|
duration atomic.Int64
|
|
durationError int64
|
|
audioQueue *queue.Queue
|
|
mounts []*StreamMount
|
|
queue []*QueueTrackEntry
|
|
mutex sync.RWMutex
|
|
config *Config
|
|
wg sync.WaitGroup
|
|
}
|
|
|
|
func NewQueue(config *Config) *Queue {
|
|
if config.Queue.SampleRate <= 0 {
|
|
config.Queue.SampleRate = 44100
|
|
}
|
|
|
|
sampleFormat := audio.SourceInt16
|
|
bitDepth := 16
|
|
switch config.Queue.SampleFormat {
|
|
case "f32", "float", "float32", "f32le":
|
|
sampleFormat = audio.SourceFloat32
|
|
bitDepth = 0
|
|
case "i32", "s32", "int32", "int", "s32le":
|
|
sampleFormat = audio.SourceInt32
|
|
bitDepth = 32
|
|
case "i16", "s16", "int16", "s16le":
|
|
sampleFormat = audio.SourceInt16
|
|
bitDepth = 16
|
|
}
|
|
if config.Queue.BitDepth > 0 {
|
|
bitDepth = config.Queue.BitDepth
|
|
}
|
|
|
|
q := &Queue{
|
|
NowPlaying: make(chan *QueueTrackEntry, 1),
|
|
QueueEmpty: make(chan *QueueTrackEntry),
|
|
config: config,
|
|
audioQueue: queue.NewQueue(sampleFormat, bitDepth, config.Queue.SampleRate, 2),
|
|
}
|
|
blocksPerSecond := 20
|
|
|
|
sources := filter.NewFilterChain(q.audioQueue.GetSource(), filter.NewBufferFilter(16), filter.NewRealTimeFilter(blocksPerSecond), filter.NewBufferFilter(maxBufferSize*blocksPerSecond)).Split(len(config.Streams))
|
|
for i, s := range q.config.Streams {
|
|
mount := NewStreamMount(sources[i], s)
|
|
if mount == nil {
|
|
log.Panicf("could not initialize %s\n", s.MountPath)
|
|
}
|
|
q.mounts = append(q.mounts, mount)
|
|
q.wg.Add(1)
|
|
go mount.Process(&q.wg)
|
|
}
|
|
|
|
return q
|
|
}
|
|
|
|
func (q *Queue) GetDuration() time.Duration {
|
|
return time.Duration(q.duration.Load())
|
|
}
|
|
|
|
func (q *Queue) Wait() {
|
|
q.wg.Wait()
|
|
close(q.NowPlaying)
|
|
}
|
|
|
|
func (q *Queue) AddTrack(entry *QueueTrackEntry, tail bool) error {
|
|
|
|
if err := entry.Load(); err != nil {
|
|
return err
|
|
}
|
|
|
|
startCallback := func(queue *queue.Queue, queueEntry *queue.QueueEntry) {
|
|
if e := q.Get(queueEntry.Identifier); e != nil { //is this needed?
|
|
log.Printf("now playing %s\n", e.Path)
|
|
q.NowPlaying <- e
|
|
for _, mount := range q.mounts {
|
|
_ = mount.MetadataQueue.Enqueue(&QueueMetadataPacket{
|
|
//TODO: carry sample rate error
|
|
sampleNumber: (q.duration.Load() * int64(queue.GetSampleRate())) / int64(time.Second),
|
|
TrackEntry: e,
|
|
})
|
|
}
|
|
} else {
|
|
log.Printf("now playing %s\n", entry.Path)
|
|
}
|
|
}
|
|
|
|
endCallback := func(queue *queue.Queue, entry *queue.QueueEntry) {
|
|
|
|
}
|
|
|
|
removeCallback := func(queue *queue.Queue, entry *queue.QueueEntry) {
|
|
//TODO: carry sample rate error
|
|
q.duration.Add(int64((time.Second * time.Duration(entry.ReadSamples.Load())) / time.Duration(entry.Source.GetSampleRate())))
|
|
|
|
q.Remove(entry.Identifier)
|
|
q.HandleQueue()
|
|
}
|
|
|
|
q.mutex.Lock()
|
|
defer q.mutex.Unlock()
|
|
|
|
if q.config.Queue.Length > 0 && len(q.queue) >= q.config.Queue.Length {
|
|
return errors.New("queue too long")
|
|
}
|
|
|
|
source := entry.source
|
|
if q.config.Queue.ReplayGain {
|
|
if entry.Metadata.ReplayGain.TrackPeak != 0 {
|
|
source = replaygain.NewReplayGainFilter(entry.Metadata.ReplayGain.TrackGain, entry.Metadata.ReplayGain.TrackPeak, 0).Process(source)
|
|
} else {
|
|
source = replaygain.NewNormalizationFilter(5).Process(source)
|
|
}
|
|
}
|
|
|
|
if tail {
|
|
entry.QueueIdentifier = q.audioQueue.AddTail(source, startCallback, endCallback, removeCallback)
|
|
} else {
|
|
entry.QueueIdentifier = q.audioQueue.AddHead(source, startCallback, endCallback, removeCallback)
|
|
}
|
|
|
|
entry.original["queue_id"] = entry.QueueIdentifier
|
|
|
|
if tail || len(q.queue) == 0 {
|
|
q.queue = append(q.queue, entry)
|
|
} else {
|
|
q.queue = append(q.queue[:1], append([]*QueueTrackEntry{entry}, q.queue[1:]...)...)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (q *Queue) HandleQueue() {
|
|
if q.audioQueue.GetQueueSize() == 0 {
|
|
if err := q.AddTrack(<-q.QueueEmpty, true); err != nil {
|
|
log.Printf("track addition error: \"%s\"", err)
|
|
|
|
//TODO: maybe fail after n tries
|
|
time.Sleep(time.Second)
|
|
|
|
q.HandleQueue()
|
|
}
|
|
}
|
|
}
|
|
|
|
func (q *Queue) GetQueue() (result []*QueueTrackEntry) {
|
|
q.mutex.RLock()
|
|
defer q.mutex.RUnlock()
|
|
|
|
if len(q.queue) > 1 {
|
|
result = make([]*QueueTrackEntry, len(q.queue)-1)
|
|
copy(result, q.queue[1:])
|
|
}
|
|
|
|
return
|
|
}
|
|
|
|
func (q *Queue) Get(identifier queue.QueueIdentifier) *QueueTrackEntry {
|
|
q.mutex.RLock()
|
|
defer q.mutex.RUnlock()
|
|
for _, e := range q.queue {
|
|
if e.QueueIdentifier == identifier {
|
|
return e
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (q *Queue) GetNowPlaying() *QueueTrackEntry {
|
|
if e := q.audioQueue.GetQueueHead(); e != nil {
|
|
return q.Get(e.Identifier)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (q *Queue) SkipNowPlaying() bool {
|
|
if e := q.audioQueue.GetQueueHead(); e != nil {
|
|
return q.Remove(e.Identifier)
|
|
}
|
|
|
|
return false
|
|
}
|
|
|
|
func (q *Queue) GetIndex(index int) *QueueTrackEntry {
|
|
if e := q.audioQueue.GetQueueIndex(index + 1); e != nil {
|
|
return q.Get(e.Identifier)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (q *Queue) GetHead() *QueueTrackEntry {
|
|
if e := q.audioQueue.GetQueueIndex(1); e != nil {
|
|
return q.Get(e.Identifier)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (q *Queue) GetTail() *QueueTrackEntry {
|
|
if i, e := q.audioQueue.GetQueueTail(); i != 0 && e != nil {
|
|
return q.Get(e.Identifier)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (q *Queue) Remove(identifier queue.QueueIdentifier) bool {
|
|
q.mutex.Lock()
|
|
for i, e := range q.queue {
|
|
if e.QueueIdentifier == identifier {
|
|
q.queue = append(q.queue[:i], q.queue[i+1:]...)
|
|
q.mutex.Unlock()
|
|
q.audioQueue.Remove(identifier)
|
|
if e.reader != nil {
|
|
e.reader.Close()
|
|
}
|
|
return true
|
|
}
|
|
}
|
|
q.mutex.Unlock()
|
|
q.audioQueue.Remove(identifier)
|
|
return false
|
|
}
|
|
|
|
func (q *Queue) RemoveListener(identifier string) bool {
|
|
q.mutex.RLock()
|
|
defer q.mutex.RUnlock()
|
|
for _, mount := range q.mounts {
|
|
if mount.RemoveListener(identifier) {
|
|
return true
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
|
|
func (q *Queue) GetListeners() (listeners []*ListenerInformation) {
|
|
q.mutex.RLock()
|
|
defer q.mutex.RUnlock()
|
|
|
|
listeners = make([]*ListenerInformation, 0, 1)
|
|
|
|
for _, mount := range q.mounts {
|
|
listeners = append(listeners, mount.GetListeners()...)
|
|
}
|
|
return
|
|
}
|
|
|
|
type PacketStreamType uint64
|
|
|
|
// PacketStreamType The order of these fields is important and set on-wire protocol
|
|
const (
|
|
Header = PacketStreamType(iota)
|
|
DataKeepLast
|
|
DataKeep
|
|
DataGroupKeep
|
|
DataGroupDiscard
|
|
DataDiscard
|
|
TrackIdentifier
|
|
TrackMetadata
|
|
)
|
|
|
|
type packetStreamFrame struct {
|
|
Type PacketStreamType
|
|
Category int64
|
|
StartSampleNumber int64
|
|
DurationInSamples int64
|
|
//automatically filled based on Data
|
|
//Size uint64
|
|
Data []byte
|
|
}
|
|
|
|
func (p *packetStreamFrame) Encode() []byte {
|
|
buf := new(bytes.Buffer)
|
|
|
|
varBuf := make([]byte, binary.MaxVarintLen64)
|
|
|
|
n := binary.PutUvarint(varBuf, uint64(p.Type))
|
|
buf.Write(varBuf[:n])
|
|
|
|
n = binary.PutUvarint(varBuf, uint64(p.Category))
|
|
buf.Write(varBuf[:n])
|
|
|
|
n = binary.PutVarint(varBuf, p.StartSampleNumber)
|
|
buf.Write(varBuf[:n])
|
|
|
|
n = binary.PutVarint(varBuf, p.DurationInSamples)
|
|
buf.Write(varBuf[:n])
|
|
|
|
n = binary.PutUvarint(varBuf, uint64(len(p.Data)))
|
|
buf.Write(varBuf[:n])
|
|
|
|
buf.Write(p.Data)
|
|
|
|
return buf.Bytes()
|
|
}
|
|
|
|
func (q *Queue) HandleRadioRequest(writer http.ResponseWriter, request *http.Request) {
|
|
writer.Header().Set("Server", "MeteorLight/radio")
|
|
writer.Header().Set("Connection", "close")
|
|
writer.Header().Set("X-Content-Type-Options", "nosniff")
|
|
writer.Header().Set("Access-Control-Allow-Origin", "*")
|
|
writer.Header().Set("Access-Control-Allow-Headers", "Accept, Content-Type, Icy-Metadata")
|
|
writer.Header().Set("Accept-Ranges", "none")
|
|
writer.Header().Set("Connection", "close")
|
|
|
|
if strings.HasSuffix(request.URL.Path, "mounts") {
|
|
writer.Header().Set("Content-Type", "application/json; charset=utf-8")
|
|
writer.Header().Set("Access-Control-Expose-Headers", "Accept-Ranges, Server, Content-Type")
|
|
|
|
type mountData struct {
|
|
Path string `json:"mount"`
|
|
MimeType string `json:"mime"`
|
|
FormatDescription string `json:"formatDescription"`
|
|
SampleRate int `json:"sampleRate"`
|
|
Channels int `json:"channels"`
|
|
Listeners int `json:"listeners"`
|
|
Options map[string]interface{} `json:"options"`
|
|
}
|
|
|
|
var mounts []mountData
|
|
|
|
for _, mount := range q.mounts {
|
|
mounts = append(mounts, mountData{
|
|
Path: strings.TrimSuffix(request.URL.Path, "mounts") + mount.Mount,
|
|
MimeType: mount.MimeType,
|
|
SampleRate: mount.SampleRate,
|
|
FormatDescription: mount.FormatDescription,
|
|
Channels: mount.Channels,
|
|
Listeners: len(mount.listeners),
|
|
Options: mount.Options,
|
|
})
|
|
}
|
|
|
|
jsonBytes, _ := json.MarshalIndent(mounts, "", " ")
|
|
|
|
writer.WriteHeader(http.StatusOK)
|
|
writer.Write(jsonBytes)
|
|
return
|
|
}
|
|
|
|
for _, mount := range q.mounts {
|
|
if strings.HasSuffix(request.URL.Path, mount.Mount) {
|
|
writer.Header().Set("Content-Type", mount.MimeType)
|
|
writer.Header().Set("Cache-Control", "no-store, max-age=604800")
|
|
writer.Header().Set("Access-Control-Expose-Headers", "Accept-Ranges, Server, Content-Type, Icy-MetaInt, X-Listener-Identifier")
|
|
writer.Header().Set("Vary", "*")
|
|
|
|
rangeHeader := request.Header.Get("range")
|
|
if rangeHeader != "" && rangeHeader != "bytes=0-" {
|
|
//TODO: maybe should fail in case bytes are requested
|
|
|
|
if strings.Index(request.UserAgent(), " Safari/") != -1 && mount.MimeType == "audio/flac" {
|
|
//Safari special case, fake Range check so it decodes afterwards.
|
|
//Safari creates a request with Range for 0-1, specifically for FLAC, and expects a result supporting range. Afterwards it requests the whole file.
|
|
//However the decoder is able to decode FLAC livestreams. If we fake the initial range response, then afterwards serve normal responses, Safari will happily work.
|
|
//TODO: remove this AS SOON as safari works on its own
|
|
//safariLargeFileValue arbitrary large value, cannot be that large or iOS Safari fails.
|
|
safariLargeFileValue := 1024 * 1024 * 1024 * 1024 * 16 // 16 TiB
|
|
|
|
if rangeHeader == "bytes=0-1" {
|
|
//first request
|
|
writer.Header().Set("Accept-Ranges", "bytes")
|
|
writer.Header().Set("Content-Range", fmt.Sprintf("bytes 0-1/%d", safariLargeFileValue)) //64 TiB max fake size
|
|
writer.Header().Set("Content-Length", "2")
|
|
writer.WriteHeader(http.StatusPartialContent)
|
|
writer.Write([]byte{'f', 'L'})
|
|
return
|
|
} else if rangeHeader == fmt.Sprintf("bytes=0-%d", safariLargeFileValue-1) {
|
|
//second request, serve status 200 to keep retries to a minimum
|
|
writer.Header().Set("Content-Length", fmt.Sprintf("%d", safariLargeFileValue))
|
|
writer.WriteHeader(http.StatusOK)
|
|
} else if strings.HasPrefix(rangeHeader, "bytes=") && strings.HasSuffix(rangeHeader, fmt.Sprintf("-%d", safariLargeFileValue-1)) {
|
|
//any other requests, these should fail
|
|
writer.Header().Set("Content-Range", fmt.Sprintf("bytes %s/%d", strings.TrimPrefix(rangeHeader, "bytes="), safariLargeFileValue))
|
|
writer.Header().Set("Accept-Ranges", "bytes")
|
|
writer.WriteHeader(http.StatusRequestedRangeNotSatisfiable)
|
|
return
|
|
}
|
|
}
|
|
}
|
|
|
|
bitrate := 0
|
|
if value, ok := mount.Options["bitrate"]; ok {
|
|
if intValue, ok := value.(int); ok {
|
|
bitrate = intValue
|
|
} else if int64Value, ok := value.(int64); ok {
|
|
bitrate = int(int64Value)
|
|
}
|
|
}
|
|
|
|
//set some audiocast/icy radio headers
|
|
writer.Header().Set("x-audiocast-name", q.config.Radio.Name)
|
|
writer.Header().Set("x-audiocast-bitrate", fmt.Sprintf("%d", bitrate))
|
|
writer.Header().Set("icy-name", q.config.Radio.Name)
|
|
writer.Header().Set("icy-version", "2")
|
|
writer.Header().Set("icy-index-metadata", "1")
|
|
if q.config.Radio.Description != "" {
|
|
writer.Header().Set("x-audiocast-description", q.config.Radio.Description)
|
|
writer.Header().Set("icy-description", q.config.Radio.Description)
|
|
}
|
|
if q.config.Radio.URL != "" {
|
|
writer.Header().Set("x-audiocast-url", q.config.Radio.URL)
|
|
writer.Header().Set("icy-url", q.config.Radio.URL)
|
|
}
|
|
if q.config.Radio.Logo != "" {
|
|
writer.Header().Set("icy-logo", q.config.Radio.Logo)
|
|
}
|
|
writer.Header().Set("icy-br", fmt.Sprintf("%d", bitrate))
|
|
writer.Header().Set("icy-sr", fmt.Sprintf("%d", mount.SampleRate))
|
|
writer.Header().Set("icy-audio-info", fmt.Sprintf("ice-channels=%d;ice-samplerate=%d;ice-bitrate=%d", mount.Channels, mount.SampleRate, bitrate))
|
|
if q.config.Radio.Private {
|
|
writer.Header().Set("icy-pub", "0")
|
|
writer.Header().Set("icy-do-not-index", "1")
|
|
writer.Header().Set("x-audiocast-public", "0")
|
|
writer.Header().Set("x-robots-tag", "noindex, nofollow")
|
|
} else {
|
|
writer.Header().Set("icy-pub", "1")
|
|
writer.Header().Set("icy-do-not-index", "0")
|
|
writer.Header().Set("x-audiocast-public", "1")
|
|
}
|
|
|
|
var packetWriteCallback func(packet packetizer.Packet) error
|
|
|
|
//buffer a bit, drop channels when buffer grows to not lock others. They will get disconnected elsewhere
|
|
const byteSliceChannelBuffer = 1024 * 16
|
|
writeChannel := make(chan []byte, byteSliceChannelBuffer)
|
|
|
|
requestDone := struct {
|
|
Done atomic.Bool
|
|
Lock sync.Mutex
|
|
Error error
|
|
}{}
|
|
var wgClient sync.WaitGroup
|
|
|
|
//set X-Audio-Packet-Stream for strictly timed packets and metadata
|
|
if numberValue, err := strconv.Atoi(request.Header.Get("x-audio-packet-stream")); err == nil && numberValue == 1 {
|
|
//version 1
|
|
|
|
writer.Header().Set("x-audio-packet-stream", "1")
|
|
writer.Header().Set("Content-Type", "application/x-audio-packet-stream")
|
|
|
|
packetWriteCallback = func(packet packetizer.Packet) error {
|
|
if requestDone.Done.Load() {
|
|
return requestDone.Error
|
|
}
|
|
if metadataPacket, ok := packet.(*QueueMetadataPacket); ok {
|
|
|
|
queueInfoBuf := make([]byte, binary.MaxVarintLen64)
|
|
n := binary.PutVarint(queueInfoBuf, int64(metadataPacket.TrackEntry.QueueIdentifier))
|
|
|
|
if len(writeChannel) >= (byteSliceChannelBuffer - 1) {
|
|
requestDone.Lock.Lock()
|
|
defer requestDone.Lock.Unlock()
|
|
requestDone.Error = errors.New("client ran out of buffer")
|
|
requestDone.Done.Store(true)
|
|
return requestDone.Error
|
|
}
|
|
|
|
writeChannel <- (&packetStreamFrame{
|
|
Type: TrackIdentifier,
|
|
Category: packet.Category(),
|
|
StartSampleNumber: packet.GetStartSampleNumber(),
|
|
DurationInSamples: packet.GetEndSampleNumber() - packet.GetStartSampleNumber(),
|
|
Data: queueInfoBuf[:n],
|
|
}).Encode()
|
|
|
|
if metadataBytes, err := json.Marshal(metadataPacket.TrackEntry.Metadata); err == nil {
|
|
if len(writeChannel) >= (byteSliceChannelBuffer - 1) {
|
|
requestDone.Lock.Lock()
|
|
defer requestDone.Lock.Unlock()
|
|
requestDone.Error = errors.New("client ran out of buffer")
|
|
requestDone.Done.Store(true)
|
|
return requestDone.Error
|
|
}
|
|
|
|
writeChannel <- (&packetStreamFrame{
|
|
Type: TrackMetadata,
|
|
Category: packet.Category(),
|
|
StartSampleNumber: packet.GetStartSampleNumber(),
|
|
DurationInSamples: packet.GetEndSampleNumber() - packet.GetStartSampleNumber(),
|
|
Data: metadataBytes,
|
|
}).Encode()
|
|
}
|
|
return nil
|
|
}
|
|
|
|
if len(writeChannel) >= (byteSliceChannelBuffer - 1) {
|
|
requestDone.Lock.Lock()
|
|
defer requestDone.Lock.Unlock()
|
|
requestDone.Error = errors.New("client ran out of buffer")
|
|
requestDone.Done.Store(true)
|
|
return requestDone.Error
|
|
}
|
|
|
|
var frameType PacketStreamType
|
|
switch packet.KeepMode() {
|
|
case packetizer.KeepLast:
|
|
frameType = DataKeepLast
|
|
case packetizer.Keep:
|
|
frameType = DataKeep
|
|
case packetizer.GroupKeep:
|
|
frameType = DataGroupKeep
|
|
case packetizer.GroupDiscard:
|
|
frameType = DataGroupDiscard
|
|
case packetizer.Discard:
|
|
frameType = DataDiscard
|
|
default:
|
|
return errors.New("unknown KeepMode")
|
|
}
|
|
|
|
writeChannel <- (&packetStreamFrame{
|
|
Type: frameType,
|
|
Category: packet.Category(),
|
|
StartSampleNumber: packet.GetStartSampleNumber(),
|
|
DurationInSamples: packet.GetEndSampleNumber() - packet.GetStartSampleNumber(),
|
|
Data: packet.GetData(),
|
|
}).Encode()
|
|
return nil
|
|
}
|
|
|
|
headerBytes := new(bytes.Buffer)
|
|
|
|
binary.Write(headerBytes, binary.LittleEndian, int64(mount.Channels))
|
|
binary.Write(headerBytes, binary.LittleEndian, int64(mount.SampleRate))
|
|
binary.Write(headerBytes, binary.LittleEndian, int32(len(mount.MimeType)))
|
|
headerBytes.Write([]byte(mount.MimeType))
|
|
|
|
writeChannel <- (&packetStreamFrame{
|
|
Type: Header,
|
|
Category: 0,
|
|
StartSampleNumber: 0,
|
|
DurationInSamples: 0,
|
|
Data: headerBytes.Bytes(),
|
|
}).Encode()
|
|
} else if numberValue, err = strconv.Atoi(request.Header.Get("icy-metadata")); err == nil && numberValue >= 1 {
|
|
metadataToSend := make(map[string]string)
|
|
const icyInterval = 8192 //weird clients might not support other numbers than this
|
|
icyCounter := 0
|
|
writer.Header().Set("icy-metaint", fmt.Sprintf("%d", icyInterval))
|
|
|
|
writeIcy := func() []byte {
|
|
packetContent := make([]byte, 1, 16*255+1)
|
|
for k, v := range metadataToSend {
|
|
packetContent = append(packetContent, []byte(fmt.Sprintf("%s='%s';", k, v))...)
|
|
delete(metadataToSend, k)
|
|
|
|
//shouldn't send multiple properties in same packet if we want working single quotes, wait until next ICY frame
|
|
break
|
|
}
|
|
|
|
contentLength := len(packetContent) - 1
|
|
if contentLength > 16*255 {
|
|
//cannot send long titles
|
|
return make([]byte, 1)
|
|
}
|
|
|
|
if (contentLength % 16) == 0 { //already padded
|
|
packetContent[0] = byte(contentLength / 16)
|
|
} else {
|
|
packetContent[0] = byte(contentLength/16) + 1
|
|
packetContent = append(packetContent, make([]byte, 16-(contentLength%16))...)
|
|
}
|
|
|
|
return packetContent
|
|
}
|
|
|
|
var streamStartOffset int64 = -1
|
|
|
|
packetWriteCallback = func(packet packetizer.Packet) error {
|
|
if requestDone.Done.Load() {
|
|
return requestDone.Error
|
|
}
|
|
if metadataPacket, ok := packet.(*QueueMetadataPacket); ok {
|
|
if len(metadataPacket.TrackEntry.Artist()) > 0 {
|
|
metadataToSend["StreamTitle"] = fmt.Sprintf("%s - %s", metadataPacket.TrackEntry.Artist(), metadataPacket.TrackEntry.Title())
|
|
} else {
|
|
metadataToSend["StreamTitle"] = metadataPacket.TrackEntry.Title()
|
|
}
|
|
if len(metadataPacket.TrackEntry.Metadata.Art) > 0 {
|
|
metadataToSend["StreamURL"] = metadataPacket.TrackEntry.Metadata.Art
|
|
}
|
|
return nil
|
|
}
|
|
|
|
var p []byte
|
|
if offsetable, ok := packet.(packetizer.OffsetablePacket); mount.OffsetStart && ok {
|
|
if streamStartOffset <= -1 {
|
|
if offsetable.KeepMode() != packetizer.Keep {
|
|
streamStartOffset = offsetable.GetStartSampleNumber()
|
|
p = offsetable.GetDataOffset(streamStartOffset)
|
|
} else {
|
|
p = packet.GetData()
|
|
}
|
|
} else {
|
|
p = offsetable.GetDataOffset(streamStartOffset)
|
|
}
|
|
} else {
|
|
p = packet.GetData()
|
|
}
|
|
|
|
var data []byte
|
|
for len(p) > 0 {
|
|
l := icyInterval - icyCounter
|
|
if l <= len(p) {
|
|
data = append(data, p[:l]...)
|
|
data = append(data, writeIcy()...)
|
|
icyCounter = 0
|
|
p = p[l:]
|
|
} else {
|
|
data = append(data, p...)
|
|
icyCounter += len(p)
|
|
p = p[:0]
|
|
}
|
|
}
|
|
|
|
if len(writeChannel) >= (byteSliceChannelBuffer - 1) {
|
|
requestDone.Lock.Lock()
|
|
defer requestDone.Lock.Unlock()
|
|
requestDone.Error = errors.New("client ran out of buffer")
|
|
requestDone.Done.Store(true)
|
|
return requestDone.Error
|
|
}
|
|
writeChannel <- data
|
|
return nil
|
|
}
|
|
} else {
|
|
var streamStartOffset int64 = -1
|
|
packetWriteCallback = func(packet packetizer.Packet) error {
|
|
if requestDone.Done.Load() {
|
|
return requestDone.Error
|
|
}
|
|
if _, ok := packet.(*QueueMetadataPacket); ok {
|
|
return nil
|
|
}
|
|
|
|
if len(writeChannel) >= (byteSliceChannelBuffer - 1) {
|
|
requestDone.Lock.Lock()
|
|
defer requestDone.Lock.Unlock()
|
|
requestDone.Error = errors.New("client ran out of buffer")
|
|
requestDone.Done.Store(true)
|
|
return requestDone.Error
|
|
}
|
|
|
|
if offsetable, ok := packet.(packetizer.OffsetablePacket); mount.OffsetStart && ok {
|
|
if streamStartOffset <= -1 {
|
|
if offsetable.KeepMode() != packetizer.Keep {
|
|
streamStartOffset = offsetable.GetStartSampleNumber()
|
|
writeChannel <- offsetable.GetDataOffset(streamStartOffset)
|
|
} else {
|
|
writeChannel <- packet.GetData()
|
|
}
|
|
} else {
|
|
writeChannel <- offsetable.GetDataOffset(streamStartOffset)
|
|
}
|
|
} else {
|
|
writeChannel <- packet.GetData()
|
|
}
|
|
|
|
return nil
|
|
}
|
|
}
|
|
|
|
wgClient.Add(1)
|
|
go func() {
|
|
defer wgClient.Done()
|
|
var flusher http.Flusher
|
|
if httpFlusher, ok := writer.(http.Flusher); ok {
|
|
flusher = httpFlusher
|
|
}
|
|
|
|
for byteSlice := range writeChannel {
|
|
if _, err := writer.Write(byteSlice); err != nil {
|
|
requestDone.Lock.Lock()
|
|
defer requestDone.Lock.Unlock()
|
|
requestDone.Error = errors.New("client ran out of buffer")
|
|
requestDone.Done.Store(true)
|
|
return
|
|
}
|
|
//try flush
|
|
if flusher != nil {
|
|
flusher.Flush()
|
|
}
|
|
}
|
|
|
|
}()
|
|
|
|
var headers []HeaderEntry
|
|
for k, v := range request.Header {
|
|
for _, s := range v {
|
|
headers = append(headers, HeaderEntry{
|
|
Name: k,
|
|
Value: s,
|
|
})
|
|
}
|
|
}
|
|
|
|
uriPath := request.URL.Path
|
|
if len(request.URL.Query().Encode()) > 0 {
|
|
uriPath += "?" + request.URL.Query().Encode()
|
|
}
|
|
|
|
getKnownBufferSize := func() time.Duration {
|
|
userAgent := request.Header.Get("user-agent")
|
|
if strings.Index(userAgent, "libmpv") != -1 || strings.Index(userAgent, "mpv ") != -1 { //mpv
|
|
return time.Millisecond * 2500
|
|
} else if strings.Index(userAgent, "libvlc") != -1 { //VLC
|
|
return time.Millisecond * 2500
|
|
} else if strings.Index(userAgent, "lavf/") != -1 { //ffplay
|
|
return time.Millisecond * 2500
|
|
} else if strings.Index(userAgent, "gvfs/") != -1 { //gvfs
|
|
return time.Millisecond * 2500
|
|
} else if strings.Index(userAgent, "Music Player Daemon ") != -1 { //MPD
|
|
return time.Millisecond * 2500
|
|
} else if strings.Index(userAgent, " Chrome/") != -1 { //Chromium-based
|
|
return time.Millisecond * 4000
|
|
} else if strings.Index(userAgent, " Safari/") != -1 { //Safari-based
|
|
return time.Millisecond * 5000
|
|
} else if strings.Index(userAgent, " Gecko/") != -1 { //Gecko-based (Firefox)
|
|
return time.Millisecond * 5000
|
|
} else if request.Header.Get("icy-metadata") == "1" { //other unknown players
|
|
return time.Millisecond * 5000
|
|
}
|
|
|
|
//fallback and provide maximum buffer
|
|
return time.Second * maxBufferSize
|
|
}
|
|
|
|
sampleBufferLimit := int64(q.config.Queue.BufferSeconds * mount.SampleRate)
|
|
if q.config.Queue.BufferSeconds == 0 { //auto buffer setup based on user agent and other client headers
|
|
sampleBufferLimit = int64(getKnownBufferSize().Seconds() * float64(mount.SampleRate))
|
|
}
|
|
|
|
wgClient.Add(1)
|
|
|
|
hashSum := sha256.Sum256([]byte(fmt.Sprintf("%s-%s-%s-%s", request.RequestURI, request.RemoteAddr, request.Proto, request.Header.Get("user-agent"))))
|
|
listenerIdentifier := hex.EncodeToString(hashSum[16:])
|
|
|
|
writer.Header().Set("x-listener-identifier", listenerIdentifier)
|
|
|
|
mount.AddListener(&StreamListener{
|
|
Information: ListenerInformation{
|
|
Identifier: listenerIdentifier,
|
|
Mount: mount.Mount,
|
|
Path: uriPath,
|
|
Headers: headers,
|
|
},
|
|
Start: func(packets []packetizer.Packet) error {
|
|
log.Printf("adding %s client to stream %s (%s, %s, agent \"%s\", buffer %.2f seconds)\n", listenerIdentifier, mount.Mount, request.RemoteAddr, request.Proto, request.Header.Get("user-agent"), float64(sampleBufferLimit)/float64(mount.SampleRate))
|
|
if len(packets) > 0 {
|
|
sampleBufferMin := packets[len(packets)-1].GetStartSampleNumber() - sampleBufferLimit
|
|
for _, p := range packets {
|
|
if p.KeepMode() != packetizer.Discard || p.GetEndSampleNumber() >= sampleBufferMin {
|
|
if err := packetWriteCallback(p); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return nil
|
|
},
|
|
Write: packetWriteCallback,
|
|
Close: func() {
|
|
log.Printf("removing %s client from stream %s\n", listenerIdentifier, mount.Mount)
|
|
defer wgClient.Done()
|
|
close(writeChannel)
|
|
},
|
|
})
|
|
wgClient.Wait()
|
|
return
|
|
}
|
|
}
|
|
|
|
writer.WriteHeader(http.StatusNotFound)
|
|
return
|
|
}
|