README
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Go ALSA bindings
These bindings allow capture and playback of audio via ALSA using the alsa-lib library.
Installation
go get github.com/cocoonlife/goalsa
Status
The code has support for capture and playback with various parameters however it is only quite lightly tested so it is likely that bugs remain. Playback in particular has not been very well tested.
Documentation
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Overview ¶
Package goalsa provides Go bindings to the ALSA library.
Index ¶
Constants ¶
const ( FormatS8 = C.SND_PCM_FORMAT_S8 FormatU8 = C.SND_PCM_FORMAT_U8 FormatS16LE = C.SND_PCM_FORMAT_S16_LE FormatS16BE = C.SND_PCM_FORMAT_S16_BE FormatU16LE = C.SND_PCM_FORMAT_U16_LE FormatU16BE = C.SND_PCM_FORMAT_U16_BE FormatS24LE = C.SND_PCM_FORMAT_S24_LE FormatS24BE = C.SND_PCM_FORMAT_S24_BE FormatU24LE = C.SND_PCM_FORMAT_U24_LE FormatU24BE = C.SND_PCM_FORMAT_U24_BE FormatS32LE = C.SND_PCM_FORMAT_S32_LE FormatS32BE = C.SND_PCM_FORMAT_S32_BE FormatU32LE = C.SND_PCM_FORMAT_U32_LE FormatU32BE = C.SND_PCM_FORMAT_U32_BE FormatFloatLE = C.SND_PCM_FORMAT_FLOAT_LE FormatFloatBE = C.SND_PCM_FORMAT_FLOAT_BE FormatFloat64LE = C.SND_PCM_FORMAT_FLOAT64_LE FormatFloat64BE = C.SND_PCM_FORMAT_FLOAT64_BE )
The range of sample formats supported by ALSA.
Variables ¶
Functions ¶
This section is empty.
Types ¶
type BufferParams ¶
BufferParams specifies the buffer parameters of a device.
type CaptureDevice ¶
type CaptureDevice struct {
// contains filtered or unexported fields
}
CaptureDevice is an ALSA device configured to record audio.
func NewCaptureDevice ¶
func NewCaptureDevice(deviceName string, channels int, format Format, rate int, bufferParams BufferParams) (c *CaptureDevice, err error)
NewCaptureDevice creates a new CaptureDevice object.
func (*CaptureDevice) Close ¶
func (d *CaptureDevice) Close()
Close closes a device and frees the resources associated with it.
func (*CaptureDevice) GetMasterVolume ¶
func (*CaptureDevice) Read ¶
func (c *CaptureDevice) Read(buffer interface{}) (samples int, err error)
Read reads samples into a buffer and returns the amount read.
func (*CaptureDevice) SetMasterVolume ¶
type PlaybackDevice ¶
type PlaybackDevice struct {
// contains filtered or unexported fields
}
PlaybackDevice is an ALSA device configured to playback audio.
func NewPlaybackDevice ¶
func NewPlaybackDevice(deviceName string, channels int, format Format, rate int, bufferParams BufferParams) (p *PlaybackDevice, err error)
NewPlaybackDevice creates a new PlaybackDevice object.
func (*PlaybackDevice) Close ¶
func (d *PlaybackDevice) Close()
Close closes a device and frees the resources associated with it.
func (*PlaybackDevice) Drop ¶
func (p *PlaybackDevice) Drop() error
Drop stream, this function stops the PCM immediately. The pending samples on the buffer are ignored.
func (*PlaybackDevice) GetMasterVolume ¶
func (*PlaybackDevice) SetMasterVolume ¶
func (*PlaybackDevice) Write ¶
func (p *PlaybackDevice) Write(buffer interface{}) (samples int, err error)
Write writes a buffer of data to a playback device.
Source Files