Trait opencv::prelude::CUDA_RawVideoSourceTraitConst

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pub trait CUDA_RawVideoSourceTraitConst {
    // Required method
    fn as_raw_CUDA_RawVideoSource(&self) -> *const c_void;

    // Provided methods
    fn last_packet_contains_key_frame(&self) -> Result<bool> { ... }
    fn format(&self) -> Result<CUDA_FormatInfo> { ... }
    fn get_extra_data(&self, extra_data: &mut Mat) -> Result<()> { ... }
    fn get(&self, property_id: i32, property_val: &mut f64) -> Result<bool> { ... }
    fn get_first_frame_idx(&self) -> Result<i32> { ... }
}
Expand description

Constant methods for crate::cudacodec::CUDA_RawVideoSource

Required Methods§

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fn as_raw_CUDA_RawVideoSource(&self) -> *const c_void

Provided Methods§

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fn last_packet_contains_key_frame(&self) -> Result<bool>

Returns true if the last packet contained a key frame.

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fn format(&self) -> Result<CUDA_FormatInfo>

Returns information about video file format.

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fn get_extra_data(&self, extra_data: &mut Mat) -> Result<()>

Returns any extra data associated with the video source.

Parameters
  • extraData: 1D cv::Mat containing the extra data if it exists.
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fn get(&self, property_id: i32, property_val: &mut f64) -> Result<bool>

Retrieves the specified property used by the VideoSource.

Parameters
  • propertyId: Property identifier from cv::VideoCaptureProperties (eg. cv::CAP_PROP_POS_MSEC, cv::CAP_PROP_POS_FRAMES, …) or one from [videoio_flags_others].
  • propertyVal: Value for the specified property.
Returns

true unless the property is unset set or not supported.

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fn get_first_frame_idx(&self) -> Result<i32>

Retrieve the index of the first frame that will returned after construction.

Returns

index of the index of the first frame that will returned after construction.

Note: To reduce the decoding overhead when initializing VideoReader to start its decoding from frame N, RawVideoSource should seek to the first valid key frame less than or equal to N and return that index here.

Implementors§