Struct CUDA_VideoReaderInitParams

#[repr(C)]
pub struct CUDA_VideoReaderInitParams {
    pub udp_source: bool,
    pub allow_frame_drop: bool,
    pub min_num_decode_surfaces: i32,
    pub raw_mode: bool,
    pub target_sz: Size,
    pub src_roi: Rect,
    pub target_roi: Rect,
    pub enable_histogram: bool,
    pub first_frame_idx: i32,
}

VideoReader initialization parameters

Parameters

• udpSource: Remove validation which can cause VideoReader() to throw exceptions when reading from a UDP source.
• allowFrameDrop: Allow frames to be dropped when ingesting from a live capture source to prevent delay and eventual disconnection when calls to nextFrame()/grab() cannot keep up with the source’s fps. Only use if delay and disconnection are a problem, i.e. not when decoding from video files where setting this flag will cause frames to be unnecessarily discarded.
• minNumDecodeSurfaces: Minimum number of internal decode surfaces used by the hardware decoder. NVDEC will automatically determine the minimum number of surfaces it requires for correct functionality and optimal video memory usage but not necessarily for best performance, which depends on the design of the overall application. The optimal number of decode surfaces (in terms of performance and memory utilization) should be decided by experimentation for each application, but it cannot go below the number determined by NVDEC.
• rawMode: Allow the raw encoded data which has been read up until the last call to grab() to be retrieved by calling retrieve(rawData,RAW_DATA_IDX).
• targetSz: Post-processed size (width/height should be multiples of 2) of the output frame, defaults to the size of the encoded video source.
• srcRoi: Region of interest (x/width should be multiples of 4 and y/height multiples of 2) decoded from video source, defaults to the full frame.
• targetRoi: Region of interest (x/width should be multiples of 4 and y/height multiples of 2) within the output frame to copy and resize the decoded frame to, defaults to the full frame.
• enableHistogram: Request output of decoded luma histogram \a hist from VideoReader::nextFrame(GpuMat& frame, GpuMat& hist, Stream& stream), if hardware supported.
• firstFrameIdx: Index of the first frame to seek to on initialization of the VideoReader.

Fields

udp_source: bool

allow_frame_drop: bool

min_num_decode_surfaces: i32

raw_mode: bool

target_sz: Size

src_roi: Rect

target_roi: Rect

enable_histogram: bool

first_frame_idx: i32

Implementations

impl CUDA_VideoReaderInitParams

pub fn default() -> Result<CUDA_VideoReaderInitParams>

Trait Implementations

impl Clone for CUDA_VideoReaderInitParams

fn clone(&self) -> CUDA_VideoReaderInitParams

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for CUDA_VideoReaderInitParams

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

Formats the value using the given formatter.

impl PartialEq for CUDA_VideoReaderInitParams

fn eq(&self, other: &CUDA_VideoReaderInitParams) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for CUDA_VideoReaderInitParams

impl StructuralPartialEq for CUDA_VideoReaderInitParams