Struct CodecProcessor 

pub struct CodecProcessor { /* private fields */ }

Implementations

impl CodecProcessor

pub fn new(mode: CodecMode) -> Self

pub fn compression_ratio(&self) -> f64

Last computed compression ratio (original_size / compressed_size). Returns 1.0 if no compression has been performed yet or on decompression.

Trait Implementations

impl NDPluginProcess for CodecProcessor

fn compression_aware(&self) -> bool

C NDPluginCodec passes compressionAware=true to the base constructor (NDPluginCodec.cpp:865-870), unconditionally regardless of mode, so compressed arrays reach it for decompression. Without this override the runtime drop gate (if compressed && !compression_aware) would discard every compressed input before process_array, making Decompress dead. Returned unconditionally because the same instance can switch Compress↔Decompress at runtime, while this flag is read once at construction.

fn process_array( &mut self, array: &NDArray, _pool: &NDArrayPool, ) -> ProcessResult

Process one array. Return output arrays and param updates.

fn plugin_type(&self) -> &str

Plugin type name for PLUGIN_TYPE param.

fn register_params(&mut self, base: &mut PortDriverBase) -> AsynResult<()>

Register plugin-specific params on the base. Called once during construction.

fn on_param_change( &mut self, reason: usize, params: &PluginParamSnapshot, ) -> ParamChangeResult

Called when a param changes. Reason is the param index. Return param updates to be written back to the port driver.

fn does_array_callbacks(&self) -> bool

Whether this plugin delivers arrays to downstream plugins, i.e. the initial NDArrayCallbacks param value. Defaults to true: most plugins do array callbacks. Terminal plugins that never deliver downstream (NDPluginStdArrays, NDPluginAttribute, every NDPluginFile writer) override this to false so the param reflects the behaviour, matching C (e.g. NDPluginFile.cpp:948 setIntegerParam(NDArrayCallbacks, 0)).

fn array_data_handle( &self, ) -> Option<Arc<Mutex<RawMutex, Option<Arc<NDArray>>>>>

Return a handle to the latest NDArray data for array reads. Override this in plugins like NDPluginStdArrays that serve pixel data via readInt8Array/readInt16Array/etc.