Documentation
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Overview ¶
Package rdpsnd implements the RDPSND (Audio Output Virtual Channel Extension) protocol (MS-RDPEA) for server-to-client audio redirection.
It can operate over either a static virtual channel ("rdpsnd") or a dynamic virtual channel (AUDIO_PLAYBACK_DVC / AUDIO_PLAYBACK_LOSSY_DVC).
Index ¶
Constants ¶
const ( ChannelName = plugin.RDPSND_SVC_CHANNEL_NAME ChannelOption = plugin.CHANNEL_OPTION_INITIALIZED | plugin.CHANNEL_OPTION_ENCRYPT_RDP )
const ( SNDC_CLOSE = 0x01 SNDC_WAVE = 0x02 SNDC_SETVOLUME = 0x03 SNDC_SETPITCH = 0x04 SNDC_WAVECONFIRM = 0x05 SNDC_TRAINING = 0x06 SNDC_FORMATS = 0x07 SNDC_CRYPTKEY = 0x08 SNDC_WAVEENCRYPT = 0x09 SNDC_UDPWAVE = 0x0A SNDC_UDPWAVELAST = 0x0B SNDC_QUALITYMODE = 0x0C SNDC_WAVE2 = 0x0D )
RDPSND PDU types (MS-RDPEA 2.2)
const ( TSSNDCAPS_ALIVE = 0x00000001 TSSNDCAPS_VOLUME = 0x00000002 TSSNDCAPS_PITCH = 0x00000004 )
RDPSND capabilities flags
const ( WAVE_FORMAT_PCM = 0x0001 WAVE_FORMAT_ADPCM = 0x0002 WAVE_FORMAT_ALAW = 0x0006 WAVE_FORMAT_MULAW = 0x0007 )
Audio format tags
const (
RDPSND_VERSION_MAJOR = 0x06
)
RDPSND version
Variables ¶
This section is empty.
Functions ¶
This section is empty.
Types ¶
type AudioFormat ¶
type AudioFormat struct {
Tag uint16
Channels uint16
SamplesPerSec uint32
AvgBytesPerSec uint32
BlockAlign uint16
BitsPerSample uint16
ExtraData []byte
}
AudioFormat represents a WAVEFORMATEX structure.
func (AudioFormat) IsPCM ¶
func (f AudioFormat) IsPCM() bool
func (AudioFormat) String ¶
func (f AudioFormat) String() string
type DvcAdapter ¶
type DvcAdapter struct {
// contains filtered or unexported fields
}
DvcAdapter wraps an rdpsnd Handler to work as a DVC channel handler. Each DVC channel gets its own adapter so responses go to the correct channel.
func NewDvcAdapter ¶
func NewDvcAdapter(handler *Handler) *DvcAdapter
NewDvcAdapter creates a DVC adapter that routes audio data to the given Handler.
func (*DvcAdapter) Process ¶
func (a *DvcAdapter) Process(data []byte)
Process implements drdynvc.DvcChannelHandler.
func (*DvcAdapter) SetSendFunc ¶
func (a *DvcAdapter) SetSendFunc(fn func([]byte))
SetSendFunc is called by the DVC client to provide the send function.
type Handler ¶
type Handler struct {
// contains filtered or unexported fields
}
Handler implements the RDPSND protocol over a static virtual channel. It also serves as the DVC audio handler via ProcessData.
func NewHandler ¶
func NewHandler(onAudio func(AudioFormat, []byte)) *Handler
NewHandler creates a new RDPSND handler. onAudio is called with the active AudioFormat and PCM audio data for each wave.
func (*Handler) Process ¶
Process handles data from the static virtual channel (already reassembled).
func (*Handler) ProcessData ¶
ProcessData processes a reassembled RDPSND PDU payload. This is used by both the static VChannel path and the DVC path.
func (*Handler) Sender ¶
func (h *Handler) Sender(s core.ChannelSender)
Source Files