func (s *Stream) OnAudioPacket(e *gumble.AudioPacketEvent) {
packet := e.AudioPacket
samples := len(packet.PositionalAudioBuffer.AudioBuffer)
if samples*2 > cap(s.buffer) {
return
}
var source openal.Source
if userSource, ok := s.userStreams[packet.Sender.Session]; !ok {
source = openal.NewSource()
s.userStreams[packet.Sender.Session] = source
} else {
source = userSource
}
for i, value := range packet.PositionalAudioBuffer.AudioBuffer {
binary.LittleEndian.PutUint16(s.buffer[i*2:], uint16(value))
}
var buffer openal.Buffer
for source.BuffersProcessed() > 0 {
openal.DeleteBuffer(source.UnqueueBuffer())
}
buffer = openal.NewBuffer()
buffer.SetData(openal.FormatMono16, s.buffer[0:samples*2], gumble.AudioSampleRate)
source.QueueBuffer(buffer)
if source.State() != openal.Playing {
source.Play()
}
}
func (s *Stream) OnAudioStream(e *gumble.AudioStreamEvent) {
go func() {
source := openal.NewSource()
var raw [gumble.AudioMaximumFrameSize * 2]byte
for packet := range e.C {
samples := len(packet.AudioBuffer)
if samples > cap(raw) {
continue
}
for i, value := range packet.AudioBuffer {
binary.LittleEndian.PutUint16(raw[i*2:], uint16(value))
}
for source.BuffersProcessed() > 0 {
source.UnqueueBuffer().Delete()
}
buffer := openal.NewBuffer()
buffer.SetData(openal.FormatMono16, raw[:samples*2], gumble.AudioSampleRate)
source.QueueBuffer(buffer)
if source.State() != openal.Playing {
source.Play()
}
}
for source.BuffersProcessed() > 0 {
source.UnqueueBuffer().Delete()
}
source.Delete()
}()
}
func main() {
device := openal.OpenDevice("")
context := device.CreateContext()
context.Activate()
//listener := new(openal.Listener)
source := openal.NewSource()
//source.SetPitch(1)
//source.SetGain(1)
//position := &openal.Vector{0, 0, 0}
//velocity := &openal.Vector{0, 0, 0}
//source.SetPosition(position)
//source.SetVelocity(velocity)
source.SetLooping(false)
buffer := openal.NewBuffer()
data, err := ioutil.ReadFile("welcome.wav")
if err != nil {
panic(err)
}
buffer.SetData(openal.FormatMono16, data, 44100)
source.SetBuffer(buffer)
source.Play()
for source.State() == openal.Playing {
//loop long enough to let the wave file finish
}
source.Pause()
context.Destroy()
}
func ExampleMonitor() {
const (
frequency = 44100
format = openal.FormatStereo16
captureSize = 512
buffersCount = 10
)
mic := openal.CaptureOpenDevice("", frequency, format, frequency*2)
mic.CaptureStart()
defer mic.CloseDevice()
device := openal.OpenDevice("")
defer device.CloseDevice()
context := device.CreateContext()
context.Activate()
defer context.Destroy()
source := openal.NewSource()
source.SetLooping(false)
defer source.Stop()
buffers := openal.NewBuffers(buffersCount)
samples := make([]byte, captureSize*format.SampleSize())
start := time.Now()
for time.Since(start) < time.Second { // play for 1 second
if err := openal.Err(); err != nil {
fmt.Println("error:", err)
return
}
// Get any free buffers
if prcessed := source.BuffersProcessed(); prcessed > 0 {
buffersNew := make(openal.Buffers, prcessed)
source.UnqueueBuffers(buffersNew)
buffers = append(buffers, buffersNew...)
}
if len(buffers) == 0 {
continue
}
if mic.CapturedSamples() >= captureSize {
mic.CaptureTo(samples)
buffer := buffers[len(buffers)-1]
buffers = buffers[:len(buffers)-1]
buffer.SetData(format, samples, frequency)
source.QueueBuffer(buffer)
// If we have enough buffers, start playing
if source.State() != openal.Playing {
if source.BuffersQueued() > 2 {
source.Play()
}
}
}
}
fmt.Println(source.State())
// Output: Playing
}
func play_crash() {
menu_click := openal.NewSource()
menu_click.SetLooping(false)
file := "sounds" + slash + "crash.wav"
buffer := openal.NewBuffer()
data, _ := ioutil.ReadFile(file)
buffer.SetData(openal.FormatStereo16, data, 44100)
menu_click.SetBuffer(buffer)
menu_click.Play()
}
func play_explosion() {
menu_click := openal.NewSource()
menu_click.SetLooping(false)
file := "sounds" + slash + "bomb.wav"
buffer := openal.NewBuffer()
data, _ := ioutil.ReadFile(file)
buffer.SetData(openal.FormatStereo16, data, 11025)
menu_click.SetBuffer(buffer)
menu_click.Play()
}
func main() {
music := openal.NewSource()
music.SetLooping(false)
if game.music {
go play_music(music)
musicThread = true
}
for game.loop {
get_event()
logic(music)
renderer.Clear()
render()
renderer.Present()
sdl.Delay(delay)
}
}
func main() {
d := openal.OpenDevice(openal.GetString(openal.DefaultDeviceSpecifier))
ctx := d.CreateContext()
ctx.Activate()
s := openal.NewSource()
stereo := newStereo()
var arr = make([][2]int16, sampleRate)
for i := 0; i < 3; i++ {
b := openal.NewBuffer()
stereo.processAudio(arr)
b.SetDataStereo16(arr, sampleRate)
s.QueueBuffer(b)
}
s.Play()
time.Sleep(5 * time.Second)
}
func NewPlayer(sampleRate, channelNum, bytesPerSample int) (*Player, error) {
d := openal.OpenDevice("")
if d == nil {
return nil, fmt.Errorf("driver: OpenDevice must not return nil")
}
c := d.CreateContext()
if c == nil {
return nil, fmt.Errorf("driver: CreateContext must not return nil")
}
// Don't check openal.Err until making the current context is done.
// Linux might fail this check even though it succeeds (#204).
c.Activate()
if err := openal.Err(); err != nil {
return nil, fmt.Errorf("driver: Activate: %v", err)
}
s := openal.NewSource()
if err := openal.Err(); err != nil {
return nil, fmt.Errorf("driver: NewSource: %v", err)
}
p := &Player{
alDevice: d,
alSource: s,
alBuffers: []openal.Buffer{},
sampleRate: sampleRate,
alFormat: alFormat(channelNum, bytesPerSample),
}
runtime.SetFinalizer(p, (*Player).Close)
bs := openal.NewBuffers(maxBufferNum)
const bufferSize = 1024
emptyBytes := make([]byte, bufferSize)
for _, b := range bs {
// Note that the third argument of only the first buffer is used.
b.SetData(p.alFormat, emptyBytes, int32(p.sampleRate))
p.alBuffers = append(p.alBuffers, b)
}
p.alSource.Play()
return p, nil
}
func ExamplePlay() {
device := openal.OpenDevice("")
defer device.CloseDevice()
context := device.CreateContext()
defer context.Destroy()
context.Activate()
source := openal.NewSource()
defer source.Pause()
source.SetLooping(false)
buffer := openal.NewBuffer()
if err := openal.Err(); err != nil {
fmt.Println(err)
return
}
data, err := ioutil.ReadFile("data/welcome.wav")
if err != nil {
fmt.Println(err)
return
}
buffer.SetData(openal.FormatMono16, data, 44100)
source.SetBuffer(buffer)
source.Play()
for source.State() == openal.Playing {
// loop long enough to let the wave file finish
time.Sleep(time.Millisecond * 100)
}
source.Delete()
fmt.Println("sound played")
// Output: sound played
}
