fuchsia.audio.controller

Name of this device's devfs node, e.g. 3d99d780.

Device type.

The device that has a ring buffer.

The ID of an ENDPOINT (with type RING_BUFFER) signal processing element of the desired ring buffer.

For Dai and StreamConfig devices, this should be fuchsia.audio.device.DEFAULT_RING_BUFFER_ELEMENT_ID.

NOT_SUPPORTED

The operation is not implemented, supported, or enabled.

UNKNOWN_FATAL

Some other problem occurred that cannot be classified using one of the more specific statuses. Future requests to this method will also fail.

UNKNOWN_CAN_RETRY

Some other problem occurred, but there is reason to believe this operation may succeed in the future. Client can retry this request.

ARGUMENTS_MISSING

Necessary arguments missing on request.

INVALID_ARGUMENTS

Unsupported arguments on request.

DEVICE_NOT_FOUND

Could not find a device matching client request parameters.

DEVICE_NOT_REACHABLE

Could not connect to device at specified location.

1

Frequency rate adjustment to a clone of the system monotonic clock, in parts per million relative to the system monotonic rate.

Must fall within [ZX_CLOCK_UPDATE_MIN_RATE_ADJUST, ZX_CLOCK_UPDATE_MAX_RATE_ADJUST]. For more info, see zx_clock_update.

Optional. If not specified, the reference clock's default rate is used.

2

Starting delta between the reference clock passed to AudioRenderer or Capturer and the system monotonic clock.

Optional. If not specified, the reference clock offset is unchanged.

1

Id of the device to set the gain state.

Required.

2

Desired gain state.

Required.

1

Whether to mute the audio stream. If unspecified, do not adjust the existing mute value.

Optional.

2

Gain level in dB. If unspecified, do not adjust stream or device gain.

Optional.

1

Socket for the client to send audio data in WAV format.

The client should transmit an entire file, then close the socket.

Required.

2

The destination to which to play the audio.

Required.

3

Play settings.

Optional. If not specified, use unity gain unmuted, and no other gain processing enabled.

4

Channels to enable during playback.

Optional. If not specified, the active-channels configuration is not changed.

1

Total number of bytes sent to destination.

1

The source from which to record the audio.

Required.

2

The stream format in which to record the audio.

Required.

3

Duration in nanoseconds to record audio data.

If not specified, Recorder will record and write data to the socket until it receives a stop signal on canceler.

If present, the record request is still cancelable via canceler.

Optional.

4

Handle to signal when to stop sending data back to the client.

Required.

5

Record gain settings.

Only used for the capturer and loopback sources.

Optional.

6

Buffer size.

Optional. If not specified, defaults to a size that is enough to hold one second of audio data.

7

Sink for audio data.

The captured data here will be written here as a complete WAV file.

Required.

1

Total number of bytes read from the source.

2

If applicable, number of packets read from an AudioCapturer.

3

If applicable, number of times the capturer woke up too late to read valid data from the device.

If this is non-zero, some data was lost and replaced with silence.

1

The usage of the audio stream.

Required.

2

The reference clock type used by the stream.

Optional. If not specified, the default reference clock provided by the capturer is used.

1

The usage of the audio stream.

Required.

2

The reference clock type used by the stream.

Optional. If not specified, the default reference clock provided by the renderer is used.

3

How many packets to use when sending data to the AudioRenderer.

Optional. If not specified, defaults to four packets.

1

How many packets to use when sending data to the AudioRenderer.

Optional. If not specified, defaults to four packets.

1

AudioCapturer for standard frequencies.

2

AudioCapturer for ultrasonic frequencies.

1

Use a flexible clock.

2

Use the system monotonic clock.

3

Use a monotonic clock with possible rate adjustment and offset relative to the system monotonic clock.

1

2

3

1

Driver node in devfs, e.g. /dev/class/audio-input/3d99d780.

2

A device available through the fuchsia.audio.device/Registry protocol.

1

Create an AudioRenderer using the audio_core API and play audio through it.

2

A device ring buffer.

1

2

3

1

2

1

An audio_core AudioCapturer protocol connection.

2

An audio_core AudioCapturer protocol connection with loopback enabled.

3

A device ring buffer.

1

2

3

1

Renderer for standard frequencies.

2

Renderer for ultrasonic frequencies.