Enum CompositeRequest

pub enum CompositeRequest {
    GetHealthState {
        responder: CompositeGetHealthStateResponder,
    },
    SignalProcessingConnect {
        protocol: ServerEnd<SignalProcessingMarker>,
        control_handle: CompositeControlHandle,
    },
    Reset {
        responder: CompositeResetResponder,
    },
    GetProperties {
        responder: CompositeGetPropertiesResponder,
    },
    GetRingBufferFormats {
        processing_element_id: u64,
        responder: CompositeGetRingBufferFormatsResponder,
    },
    CreateRingBuffer {
        processing_element_id: u64,
        format: Format,
        ring_buffer: ServerEnd<RingBufferMarker>,
        responder: CompositeCreateRingBufferResponder,
    },
    GetDaiFormats {
        processing_element_id: u64,
        responder: CompositeGetDaiFormatsResponder,
    },
    SetDaiFormat {
        processing_element_id: u64,
        format: DaiFormat,
        responder: CompositeSetDaiFormatResponder,
    },
}

The Composite interface is a FIDL protocol exposed by audio drivers. The Composite interface is generic and allows the configuration of various audio hardware types including those supported by the StreamConfig, Dai and Codec FIDL interfaces. The Composite interface is more generic and provides more flexible routing within audio subsystems. Also see Audio Driver Composite

Variants

GetHealthState

Retrieves top level health state. A driver not responding promptly can be used as an indication of an unhealthy driver.

Fields

responder: CompositeGetHealthStateResponder

SignalProcessingConnect

Connect to a SignalProcessing protocol. Multiple connections may be supported, if a new connection request is not supported, i.e. the maximum number of connections have already been created, for instance one, then the protocol channel (not the channel upon which SignalProcessingConnect is being called) will be closed with a ZX_ERR_ALREADY_BOUND epitaph. If signal processing is not supported at all, then the protocol channel (again, not the channel upon which SignalProcessingConnect is being called) will be closed with a ZX_ERR_NOT_SUPPORTED epitaph. This method is named SignalProcessingConnect instead of Connect because this protocol is intended to be composed, and hence the more verbose name allows differentiation and improved clarity.

Fields

protocol: ServerEnd<SignalProcessingMarker>

control_handle: CompositeControlHandle

Reset

Resets the hardware including all DAI interconnects and signal processing. As a result, all channels obtained by CreateRingBuffer will be closed.

Reset returns when the hardware is fully reset. At this point, a client would need to reconfigure any DAI interconnects, select a signal processing topology and reconfigure any processing elements, and reconstruct any ring buffers.

If the driver can’t successfully reset the hardware, it will return an error and then close the protocol channel, in this case the client may obtain a new protocol channel and retry.

Fields

responder: CompositeResetResponder

GetProperties

Retrieves top level static properties.

Fields

responder: CompositeGetPropertiesResponder

GetRingBufferFormats

Retrieves the ring buffer formats supported by a RING_BUFFER processing element in the topology supported by this driver as returned by GetElements from fuchsia.hardware.audio.signalprocessing. Returns SHOULD_WAIT if the ring buffer formats are not available at the time, the client may retry at a later time. Returns INVALID_ARGS if the processing_element_id does not match an id returned by GetElements. Returns WRONG_TYPE if the ElementType of the element represented by the id is not RING_BUFFER. Retrieving multiple SupportedFormats allows for cases where exclusive combinations of the parameters in SupportedFormats may be supported.

Fields

processing_element_id: u64

responder: CompositeGetRingBufferFormatsResponder

CreateRingBuffer

CreateRingBuffer is sent by clients to select a ring buffer format for the RING_BUFFER processing element specified by processing_element_id. The format is based on information that the driver provides in GetRingBufferFormats, what is supported by the client, and any other requirement. The returned ring_buffer channel is used to access and control the audio buffer provided by the driver. Returns INVALID_ARGS if the processing_element_id does not match an id returned by GetElements. Returns WRONG_TYPE if the ElementType of the element represented by the id is not RING_BUFFER.

Fields

processing_element_id: u64

format: Format

ring_buffer: ServerEnd<RingBufferMarker>

responder: CompositeCreateRingBufferResponder

GetDaiFormats

Retrieves the DAI formats supported by a DAI_INTERCONNECT processing element in the topology supported by this driver as returned by GetElements from fuchsia.hardware.audio.signalprocessing. Returns SHOULD_WAIT if the DAI formats are not available at the time, the client may retry at a later time. Returns INVALID_ARGS if the processing_element_id does not match an id returned by GetElements. Returns WRONG_TYPE if the ElementType of the element represented by the id is not DAI_INTERCONNECT. Retrieving multiple DaiSupportedFormats allows for cases where exclusive combinations of the parameters in SupportedFormats may be supported.

Fields

processing_element_id: u64

responder: CompositeGetDaiFormatsResponder

SetDaiFormat

SetDaiFormat is sent by clients to select a DAI format for the DAI_INTERCONNECT processing element specified by processing_element_id. The format is based on information that the driver provides in GetDaiFormats, what is supported by the client, and any other requirement. Returns INVALID_ARGS if the processing_element_id does not match an id returned by GetElements. Returns WRONG_TYPE if the ElementType of the element represented by the id is not DAI_INTERCONNECT.

Fields

processing_element_id: u64

format: DaiFormat

responder: CompositeSetDaiFormatResponder

Implementations

impl CompositeRequest

pub fn into_get_health_state(self) -> Option<CompositeGetHealthStateResponder>

pub fn into_signal_processing_connect( self, ) -> Option<(ServerEnd<SignalProcessingMarker>, CompositeControlHandle)>

pub fn into_reset(self) -> Option<CompositeResetResponder>

pub fn into_get_properties(self) -> Option<CompositeGetPropertiesResponder>

pub fn into_get_ring_buffer_formats( self, ) -> Option<(u64, CompositeGetRingBufferFormatsResponder)>

pub fn into_create_ring_buffer( self, ) -> Option<(u64, Format, ServerEnd<RingBufferMarker>, CompositeCreateRingBufferResponder)>

pub fn into_get_dai_formats( self, ) -> Option<(u64, CompositeGetDaiFormatsResponder)>

pub fn into_set_dai_format( self, ) -> Option<(u64, DaiFormat, CompositeSetDaiFormatResponder)>

pub fn method_name(&self) -> &'static str

Name of the method defined in FIDL

Trait Implementations

impl Debug for CompositeRequest

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.