| <link rel="stylesheet" href="../style.css" /> |
| |
| [TOC] |
| # fuchsia.audio.effects |
| |
| <p><b>Added:7</b></p> |
| |
| ## **PROTOCOLS** |
| |
| ## Processor {#Processor} |
| *Defined in [fuchsia.audio.effects/processor.fidl](https://cs.opensource.google/fuchsia/fuchsia/+/main:sdk/fidl/fuchsia.audio.effects/processor.fidl;l=26)* |
| <p>An audio effect processor. Consumes one or more input streams, producing one |
| or more output streams. On creation, this protocol must be tied to a |
| <a class='link' href='../fuchsia.audio.effects.Processor/'>fuchsia.audio.effects.Processor</a>/<a class='link' href='../fuchsia.audio.effects.Processor/#ProcessorConfiguration'>ProcessorConfiguration</a>, which defines |
| the processor's input and output streams.</p> |
| |
| ### Process {#Processor.Process} |
| |
| <p>Processes the given number of frames. This will consume <code>num_frames</code> from |
| each <code>ProcessorConfiguration.inputs[i]</code> and produce an equivalent number of |
| frames in each <code>ProcessorConfiguration.outputs[i]</code>.</p> |
| <h2>Execution model</h2> |
| <p>All inputs and outputs must have identical frame rates. This simplifies |
| the problem of matching input and output frames, as described below.</p> |
| <p>At each call to <code>Process</code>, the effect collects audio from a set of input buffers |
| and produces a set of output buffers. The input buffers should be aligned by |
| time. That means: the first frame in each input buffer, input[i].buffer[0], |
| should have the same presentation time as all other frames input[j].buffer[0].</p> |
| <p>Output buffers with non-zero latency may be shifted relative to input buffers. |
| For each output k, input frame 0 has the same presentation time as the frame at |
| output[k].buffer[output[k].latency_frames].</p> |
| <ul> |
| <li>request <code>num_frames</code> The number of frames to process.</li> |
| <li>request <code>options</code> Extra options.</li> |
| </ul> |
| <ul> |
| <li>response <code>per_stage_metrics </code>Metrics about this process call, possibly |
| subdivided into multiple stages.</li> |
| </ul> |
| <ul> |
| <li>error A zx.status value indicating success or failure.</li> |
| </ul> |
| |
| #### Request {#Processor.Process_Request} |
| |
| <table> |
| <tr><th>Name</th><th>Type</th></tr> |
| <tr> |
| <td><code>num_frames</code></td> |
| <td> |
| <code>uint64</code> |
| </td> |
| </tr> |
| <tr> |
| <td><code>options</code></td> |
| <td> |
| <code><a class='link' href='#ProcessOptions'>ProcessOptions</a></code> |
| </td> |
| </tr> |
| </table> |
| |
| |
| #### Response {#Processor.Process_Response} |
| |
| <table> |
| <tr><th>Name</th><th>Type</th></tr> |
| <tr> |
| <td><code>result</code></td> |
| <td> |
| <code><a class='link' href='#Processor_Process_Result'>Processor_Process_Result</a></code> |
| </td> |
| </tr> |
| </table> |
| |
| ## ProcessorCreator {#ProcessorCreator} |
| *Defined in [fuchsia.audio.effects/creator.fidl](https://cs.opensource.google/fuchsia/fuchsia/+/main:sdk/fidl/fuchsia.audio.effects/creator.fidl;l=10)* |
| <p>A factory for creating processors.</p> |
| |
| ### Create {#ProcessorCreator.Create} |
| |
| <p>Create a new Processor and return it's ProcessorConfiguration.</p> |
| <ul> |
| <li>request <code>name</code> A string naming the processor to create. The meaning of this |
| name is up to the implementor.</li> |
| </ul> |
| <ul> |
| <li>response <code>processor_configuration</code> Description of the new processor.</li> |
| </ul> |
| <ul> |
| <li>error A zx.status value indicating success or failure.</li> |
| </ul> |
| |
| #### Request {#ProcessorCreator.Create_Request} |
| |
| <table> |
| <tr><th>Name</th><th>Type</th></tr> |
| <tr> |
| <td><code>name</code></td> |
| <td> |
| <code>string[1024]</code> |
| </td> |
| </tr> |
| </table> |
| |
| |
| #### Response {#ProcessorCreator.Create_Response} |
| |
| <table> |
| <tr><th>Name</th><th>Type</th></tr> |
| <tr> |
| <td><code>result</code></td> |
| <td> |
| <code><a class='link' href='#ProcessorCreator_Create_Result'>ProcessorCreator_Create_Result</a></code> |
| </td> |
| </tr> |
| </table> |
| |
| |
| ## **STRUCTS** |
| |
| ### ProcessorCreator_Create_Response [resource](/fuchsia-src/reference/fidl/language/language.md#value-vs-resource){:.fidl-attribute} {#ProcessorCreator_Create_Response data-text="ProcessorCreator_Create_Response"} |
| *Defined in [fuchsia.audio.effects/creator.fidl](https://cs.opensource.google/fuchsia/fuchsia/+/main:sdk/fidl/fuchsia.audio.effects/creator.fidl;l=19)* |
| |
| <table> |
| <tr><th>Field</th><th>Type</th><th>Description</th><th>Default</th></tr> |
| <tr id="ProcessorCreator_Create_Response.processor_configuration"> |
| <td><code>processor_configuration</code></td> |
| <td> |
| <code><a class='link' href='#ProcessorConfiguration'>ProcessorConfiguration</a></code> |
| </td> |
| <td></td> |
| <td>No default</td> |
| </tr> |
| </table> |
| |
| ### Processor_Process_Response {#Processor_Process_Response data-text="Processor_Process_Response"} |
| *Defined in [fuchsia.audio.effects/processor.fidl](https://cs.opensource.google/fuchsia/fuchsia/+/main:sdk/fidl/fuchsia.audio.effects/processor.fidl;l=53)* |
| |
| <table> |
| <tr><th>Field</th><th>Type</th><th>Description</th><th>Default</th></tr> |
| <tr id="Processor_Process_Response.per_stage_metrics"> |
| <td><code>per_stage_metrics</code></td> |
| <td> |
| <code>vector<<a class='link' href='#ProcessMetrics'>ProcessMetrics</a>>[8]</code> |
| </td> |
| <td></td> |
| <td>No default</td> |
| </tr> |
| </table> |
| |
| |
| |
| ## **TABLES** |
| |
| ### InputConfiguration [resource](/fuchsia-src/reference/fidl/language/language.md#value-vs-resource){:.fidl-attribute} {#InputConfiguration data-text="InputConfiguration"} |
| |
| |
| *Defined in [fuchsia.audio.effects/processor.fidl](https://cs.opensource.google/fuchsia/fuchsia/+/main:sdk/fidl/fuchsia.audio.effects/processor.fidl;l=145)* |
| <p>Configures a single input stream.</p> |
| |
| <table> |
| <tr><th>Ordinal</th><th>Field</th><th>Type</th><th>Description</th></tr> |
| <tr id="InputConfiguration.format"> |
| <td><h3 id="InputConfiguration.format" class="add-link hide-from-toc">1</h3></td> |
| <td><code>format</code></td> |
| <td> |
| <code><a class='link' href='../fuchsia.mediastreams/'>fuchsia.mediastreams</a>/<a class='link' href='../fuchsia.mediastreams/#AudioFormat'>AudioFormat</a></code> |
| </td> |
| <td><p>Format of this input stream. |
| Required.</p> |
| </td> |
| </tr> |
| <tr id="InputConfiguration.buffer"> |
| <td><h3 id="InputConfiguration.buffer" class="add-link hide-from-toc">2</h3></td> |
| <td><code>buffer</code></td> |
| <td> |
| <code><a class='link' href='../fuchsia.mem/'>fuchsia.mem</a>/<a class='link' href='../fuchsia.mem/#Range'>Range</a></code> |
| </td> |
| <td><p>Buffer for this input stream. Must provide write access and must have |
| enough space for <code>ProcessorConfiguration.max_frames_per_call</code>.</p> |
| <p>Required.</p> |
| </td> |
| </tr> |
| </table> |
| |
| ### OutputConfiguration [resource](/fuchsia-src/reference/fidl/language/language.md#value-vs-resource){:.fidl-attribute} {#OutputConfiguration data-text="OutputConfiguration"} |
| |
| |
| *Defined in [fuchsia.audio.effects/processor.fidl](https://cs.opensource.google/fuchsia/fuchsia/+/main:sdk/fidl/fuchsia.audio.effects/processor.fidl;l=158)* |
| <p>Configures a single output stream.</p> |
| |
| <table> |
| <tr><th>Ordinal</th><th>Field</th><th>Type</th><th>Description</th></tr> |
| <tr id="OutputConfiguration.format"> |
| <td><h3 id="OutputConfiguration.format" class="add-link hide-from-toc">1</h3></td> |
| <td><code>format</code></td> |
| <td> |
| <code><a class='link' href='../fuchsia.mediastreams/'>fuchsia.mediastreams</a>/<a class='link' href='../fuchsia.mediastreams/#AudioFormat'>AudioFormat</a></code> |
| </td> |
| <td><p>Format of this output stream. |
| Required.</p> |
| </td> |
| </tr> |
| <tr id="OutputConfiguration.buffer"> |
| <td><h3 id="OutputConfiguration.buffer" class="add-link hide-from-toc">2</h3></td> |
| <td><code>buffer</code></td> |
| <td> |
| <code><a class='link' href='../fuchsia.mem/'>fuchsia.mem</a>/<a class='link' href='../fuchsia.mem/#Range'>Range</a></code> |
| </td> |
| <td><p>Buffer for this output stream. Must provide write access and must have |
| enough space for <code>ProcessorConfiguration.max_frames_per_call</code>. |
| Write access is needed so the audio system can write to the output |
| buffer in error cases, such as when the Processor disconnects.</p> |
| <p>If the effect supports in-place updates, this may refer to the same memory |
| range as an input buffer.</p> |
| <p>Required.</p> |
| </td> |
| </tr> |
| <tr id="OutputConfiguration.latency_frames"> |
| <td><h3 id="OutputConfiguration.latency_frames" class="add-link hide-from-toc">3</h3></td> |
| <td><code>latency_frames</code></td> |
| <td> |
| <code>uint64</code> |
| </td> |
| <td><p>If specified, the output signal is shifted by this many frames. |
| If not specified, this is zero. |
| See the explanation at <code>[fuchsia.audio.effects/Processor.Process]</code>.</p> |
| </td> |
| </tr> |
| <tr id="OutputConfiguration.ring_out_frames"> |
| <td><h3 id="OutputConfiguration.ring_out_frames" class="add-link hide-from-toc">4</h3></td> |
| <td><code>ring_out_frames</code></td> |
| <td> |
| <code>uint64</code> |
| </td> |
| <td><p>If specified, then input frame F will affect the output stream up through |
| frame F + <code>ring_out_frames</code>. If not specified, this is zero.</p> |
| <p>Put differently, if the effect is given an input stream with N non-silent |
| frames followed by infinite silence, the effect will produce up to N + |
| <code>ring_out_frames</code> non-silent frames before emitting silence.</p> |
| </td> |
| </tr> |
| </table> |
| |
| ### ProcessMetrics {#ProcessMetrics data-text="ProcessMetrics"} |
| |
| |
| *Defined in [fuchsia.audio.effects/processor.fidl](https://cs.opensource.google/fuchsia/fuchsia/+/main:sdk/fidl/fuchsia.audio.effects/processor.fidl;l=82)* |
| <p>An extensible container of metrics about a single Processor.Process call. |
| All fields are optional.</p> |
| |
| <table> |
| <tr><th>Ordinal</th><th>Field</th><th>Type</th><th>Description</th></tr> |
| <tr id="ProcessMetrics.name"> |
| <td><h3 id="ProcessMetrics.name" class="add-link hide-from-toc">1</h3></td> |
| <td><code>name</code></td> |
| <td> |
| <code>string[64]</code> |
| </td> |
| <td><p>Each process call may be (optionally) divided into multiple stages, |
| each with their own ProcessMetrics. This field names the stage described |
| by this table.</p> |
| </td> |
| </tr> |
| <tr id="ProcessMetrics.wall_time"> |
| <td><h3 id="ProcessMetrics.wall_time" class="add-link hide-from-toc">2</h3></td> |
| <td><code>wall_time</code></td> |
| <td> |
| <code><a class='link' href='../zx/'>zx</a>/<a class='link' href='../zx/#duration'>duration</a></code> |
| </td> |
| <td><p>Total wall-clock time from the moment the Process call is received to |
| the moment a response is returned.</p> |
| </td> |
| </tr> |
| <tr id="ProcessMetrics.cpu_time"> |
| <td><h3 id="ProcessMetrics.cpu_time" class="add-link hide-from-toc">3</h3></td> |
| <td><code>cpu_time</code></td> |
| <td> |
| <code><a class='link' href='../zx/'>zx</a>/<a class='link' href='../zx/#duration'>duration</a></code> |
| </td> |
| <td><p>Total amount of time spent running on the CPU. |
| See zx_info_task_runtime.cpu_time.</p> |
| </td> |
| </tr> |
| <tr id="ProcessMetrics.queue_time"> |
| <td><h3 id="ProcessMetrics.queue_time" class="add-link hide-from-toc">4</h3></td> |
| <td><code>queue_time</code></td> |
| <td> |
| <code><a class='link' href='../zx/'>zx</a>/<a class='link' href='../zx/#duration'>duration</a></code> |
| </td> |
| <td><p>Total amount of time spent waiting to run. Only counts "ready" time. |
| See zx_info_task_runtime.queue_time.</p> |
| </td> |
| </tr> |
| <tr id="ProcessMetrics.page_fault_time"> |
| <td><h3 id="ProcessMetrics.page_fault_time" class="add-link hide-from-toc">5</h3></td> |
| <td><code>page_fault_time</code></td> |
| <td> |
| <code><a class='link' href='../zx/'>zx</a>/<a class='link' href='../zx/#duration'>duration</a></code> |
| </td> |
| <td><p>Total amount of time spent handling page faults. |
| See zx_info_task_runtime.page_fault_time.</p> |
| </td> |
| </tr> |
| <tr id="ProcessMetrics.kernel_lock_contention_time"> |
| <td><h3 id="ProcessMetrics.kernel_lock_contention_time" class="add-link hide-from-toc">6</h3></td> |
| <td><code>kernel_lock_contention_time</code></td> |
| <td> |
| <code><a class='link' href='../zx/'>zx</a>/<a class='link' href='../zx/#duration'>duration</a></code> |
| </td> |
| <td><p>Total amount of time spent waiting on contended kernel locks. |
| See zx_info_task_runtime.lock_contention_time.</p> |
| </td> |
| </tr> |
| </table> |
| |
| ### ProcessOptions {#ProcessOptions data-text="ProcessOptions"} |
| |
| |
| *Defined in [fuchsia.audio.effects/processor.fidl](https://cs.opensource.google/fuchsia/fuchsia/+/main:sdk/fidl/fuchsia.audio.effects/processor.fidl;l=59)* |
| <p>An extensible container of options for Processor.Process.</p> |
| |
| <table> |
| <tr><th>Ordinal</th><th>Field</th><th>Type</th><th>Description</th></tr> |
| <tr id="ProcessOptions.total_applied_gain_db_per_input"> |
| <td><h3 id="ProcessOptions.total_applied_gain_db_per_input" class="add-link hide-from-toc">1</h3></td> |
| <td><code>total_applied_gain_db_per_input</code></td> |
| <td> |
| <code>vector<float32>[8]</code> |
| </td> |
| <td><p>The total gain that has been applied to each input stream by prior |
| processing steps. For example, given an audio pipeline of the form input -> |
| ProcessorA -> ProcessorB, if input is a sine wave with unity amplitude and |
| ProcessorA applies a gain of -5.0dB, then ProcessorB should be called with |
| total_applied_gain_db_per_input[0] = -5.0dB and ProcessorB's input buffer |
| should contain a sine wave with amplitude -5.0dB.</p> |
| <p>If not specified, the applied gain is 0 dB for each input.</p> |
| </td> |
| </tr> |
| <tr id="ProcessOptions.usage_mask_per_input"> |
| <td><h3 id="ProcessOptions.usage_mask_per_input" class="add-link hide-from-toc">2</h3></td> |
| <td><code>usage_mask_per_input</code></td> |
| <td> |
| <code>vector<uint32>[8]</code> |
| </td> |
| <td><p>All fuchsia.media.AudioRenderUsages that contribute to each input |
| stream. This is a bitmask of (1 << r), for each AudioRenderUsage that |
| contributes. For example, if an input stream contains BACKGROUND (== 0) |
| and INTERRUPTION (== 2), the bitmask is ((1<<0)|(1<<2)) = 0x5.</p> |
| <p>Note: this field may be removed once we have transitions to the new |
| Fuchsia media APIs.</p> |
| </td> |
| </tr> |
| </table> |
| |
| ### ProcessorConfiguration [resource](/fuchsia-src/reference/fidl/language/language.md#value-vs-resource){:.fidl-attribute} {#ProcessorConfiguration data-text="ProcessorConfiguration"} |
| |
| |
| *Defined in [fuchsia.audio.effects/processor.fidl](https://cs.opensource.google/fuchsia/fuchsia/+/main:sdk/fidl/fuchsia.audio.effects/processor.fidl;l=110)* |
| <p>Configures a Processor.</p> |
| |
| <table> |
| <tr><th>Ordinal</th><th>Field</th><th>Type</th><th>Description</th></tr> |
| <tr id="ProcessorConfiguration.processor"> |
| <td><h3 id="ProcessorConfiguration.processor" class="add-link hide-from-toc">1</h3></td> |
| <td><code>processor</code></td> |
| <td> |
| <code><a class='link' href='#Processor'>Processor</a></code> |
| </td> |
| <td><p>Dedicated FIDL channel for this processor. |
| Required.</p> |
| </td> |
| </tr> |
| <tr id="ProcessorConfiguration.inputs"> |
| <td><h3 id="ProcessorConfiguration.inputs" class="add-link hide-from-toc">2</h3></td> |
| <td><code>inputs</code></td> |
| <td> |
| <code>vector<<a class='link' href='#InputConfiguration'>InputConfiguration</a>>[8]</code> |
| </td> |
| <td><p>A description of all input streams for this processor. |
| Must have at least one input.</p> |
| <p>Each input stream can have a different sample format or channel count, but |
| all inputs must have the same frame rate.</p> |
| </td> |
| </tr> |
| <tr id="ProcessorConfiguration.outputs"> |
| <td><h3 id="ProcessorConfiguration.outputs" class="add-link hide-from-toc">3</h3></td> |
| <td><code>outputs</code></td> |
| <td> |
| <code>vector<<a class='link' href='#OutputConfiguration'>OutputConfiguration</a>>[8]</code> |
| </td> |
| <td><p>A description of all output streams for this processor. |
| Must have at least one output.</p> |
| <p>Each output stream can have a different sample format or channel count, |
| but all outputs must have the same frame rate as the input(s) -- effects |
| are allowed to perform sample format conversion and rechannelization as |
| long as the frame rate does not change.</p> |
| </td> |
| </tr> |
| <tr id="ProcessorConfiguration.max_frames_per_call"> |
| <td><h3 id="ProcessorConfiguration.max_frames_per_call" class="add-link hide-from-toc">4</h3></td> |
| <td><code>max_frames_per_call</code></td> |
| <td> |
| <code>uint64</code> |
| </td> |
| <td><p>The maximum number of frames that may be processed per call to |
| <a class='link' href='../fuchsia.audio.effects/'>fuchsia.audio.effects</a>/<a class='link' href='../fuchsia.audio.effects/#Processor.Process'>Processor.Process</a>. The default limit is the |
| number of frames that can fit in the smallest input buffer. If specified, |
| this must be smaller than the default limit.</p> |
| </td> |
| </tr> |
| <tr id="ProcessorConfiguration.block_size_frames"> |
| <td><h3 id="ProcessorConfiguration.block_size_frames" class="add-link hide-from-toc">5</h3></td> |
| <td><code>block_size_frames</code></td> |
| <td> |
| <code>uint64</code> |
| </td> |
| <td><p>If specified, all calls to <a class='link' href='../fuchsia.audio.effects/'>fuchsia.audio.effects</a>/<a class='link' href='../fuchsia.audio.effects/#Processor.Process'>Processor.Process</a>. |
| must set <code>num_frames</code> to a multiple of this number. Must be less than or |
| equal to <code>max_frames_per_call</code>. If not specified, then any block size is |
| allowed.</p> |
| </td> |
| </tr> |
| </table> |
| |
| |
| ## **UNIONS** |
| |
| ### ProcessorCreator_Create_Result [strict](/fuchsia-src/reference/fidl/language/language.md#strict-vs-flexible){:.fidl-attribute} [resource](/fuchsia-src/reference/fidl/language/language.md#value-vs-resource){:.fidl-attribute} {#ProcessorCreator_Create_Result data-text="ProcessorCreator_Create_Result"} |
| *Defined in [fuchsia.audio.effects/creator.fidl](https://cs.opensource.google/fuchsia/fuchsia/+/main:sdk/fidl/fuchsia.audio.effects/creator.fidl;l=19)* |
| <table> |
| <tr><th>Ordinal</th><th>Variant</th><th>Type</th><th>Description</th></tr> |
| <tr id="ProcessorCreator_Create_Result.response"> |
| <td><h3 id="ProcessorCreator_Create_Result.response" class="add-link hide-from-toc">1</h3></td> |
| <td><code>response</code></td> |
| <td> |
| <code><a class='link' href='#ProcessorCreator_Create_Response'>ProcessorCreator_Create_Response</a></code> |
| </td> |
| <td></td> |
| </tr> |
| <tr id="ProcessorCreator_Create_Result.err"> |
| <td><h3 id="ProcessorCreator_Create_Result.err" class="add-link hide-from-toc">2</h3></td> |
| <td><code>err</code></td> |
| <td> |
| <code><a class='link' href='../zx/'>zx</a>/<a class='link' href='../zx/#status'>status</a></code> |
| </td> |
| <td></td> |
| </tr> |
| </table> |
| |
| ### Processor_Process_Result [strict](/fuchsia-src/reference/fidl/language/language.md#strict-vs-flexible){:.fidl-attribute} {#Processor_Process_Result data-text="Processor_Process_Result"} |
| *Defined in [fuchsia.audio.effects/processor.fidl](https://cs.opensource.google/fuchsia/fuchsia/+/main:sdk/fidl/fuchsia.audio.effects/processor.fidl;l=53)* |
| <table> |
| <tr><th>Ordinal</th><th>Variant</th><th>Type</th><th>Description</th></tr> |
| <tr id="Processor_Process_Result.response"> |
| <td><h3 id="Processor_Process_Result.response" class="add-link hide-from-toc">1</h3></td> |
| <td><code>response</code></td> |
| <td> |
| <code><a class='link' href='#Processor_Process_Response'>Processor_Process_Response</a></code> |
| </td> |
| <td></td> |
| </tr> |
| <tr id="Processor_Process_Result.err"> |
| <td><h3 id="Processor_Process_Result.err" class="add-link hide-from-toc">2</h3></td> |
| <td><code>err</code></td> |
| <td> |
| <code><a class='link' href='../zx/'>zx</a>/<a class='link' href='../zx/#status'>status</a></code> |
| </td> |
| <td></td> |
| </tr> |
| </table> |
| |
| |
| |
| ## **CONSTANTS** |
| |
| <table> |
| <tr><th>Name</th><th>Value</th><th>Type</th><th>Description</th></tr> |
| <tr id="MAX_INPUT_STREAMS"> |
| <td><a href="https://cs.opensource.google/fuchsia/fuchsia/+/main:sdk/fidl/fuchsia.audio.effects/processor.fidl;l=13">MAX_INPUT_STREAMS</a></td> |
| <td> |
| <code>8</code> |
| </td> |
| <td><code>uint32</code></td> |
| <td><p>The maximum number of input and output streams. |
| These bounds are somewhat arbitrary; in practice we don't expect more than 1 |
| or 2 inputs and outputs in the vast majority of cases.</p> |
| </td> |
| </tr> |
| <tr id="MAX_OUTPUT_STREAMS"> |
| <td><a href="https://cs.opensource.google/fuchsia/fuchsia/+/main:sdk/fidl/fuchsia.audio.effects/processor.fidl;l=14">MAX_OUTPUT_STREAMS</a></td> |
| <td> |
| <code>8</code> |
| </td> |
| <td><code>uint32</code></td> |
| <td></td> |
| </tr> |
| <tr id="MAX_PROCESS_STAGES"> |
| <td><a href="https://cs.opensource.google/fuchsia/fuchsia/+/main:sdk/fidl/fuchsia.audio.effects/processor.fidl;l=17">MAX_PROCESS_STAGES</a></td> |
| <td> |
| <code>8</code> |
| </td> |
| <td><code>uint32</code></td> |
| <td><p>The maximum size of the per_stage_metrics array.</p> |
| </td> |
| </tr> |
| <tr id="MAX_PROCESS_STAGE_NAME_LENGTH"> |
| <td><a href="https://cs.opensource.google/fuchsia/fuchsia/+/main:sdk/fidl/fuchsia.audio.effects/processor.fidl;l=20">MAX_PROCESS_STAGE_NAME_LENGTH</a></td> |
| <td> |
| <code>64</code> |
| </td> |
| <td><code>uint32</code></td> |
| <td><p>The maximum length of the name of a process stage.</p> |
| </td> |
| </tr> |
| </table> |
