Struct VideoFrameProcessor 

pub struct VideoFrameProcessor { /* private fields */ }

GPU-accelerated video frame processor.

Provides CPU-fallback implementations of common video frame operations that would execute on the GPU in production environments.

Implementations

impl VideoFrameProcessor

pub fn new(config: FrameProcessConfig) -> Self

Create a new VideoFrameProcessor with the given configuration.

pub fn compute_histogram(&self, frame: &[u8]) -> Result<Vec<u32>>

Simulate GPU-accelerated frame histogram computation.

For each channel, counts pixel value occurrences (0-255). Returns a Vec of 256 * channels counts (interleaved per channel).

Errors

Returns an error if the frame buffer size does not match the configured dimensions.

pub fn adjust_brightness(&self, frame: &[u8], delta: i16) -> Result<Vec<u8>>

Simulate GPU-accelerated frame brightness adjustment.

Adds delta to each pixel value, clamping the result to [0, 255].

Errors

Returns an error if the frame buffer size does not match the configured dimensions.

pub fn adjust_contrast(&self, frame: &[u8], factor: f32) -> Result<Vec<u8>>

Simulate GPU-accelerated contrast adjustment.

For each pixel: clamp((pixel - 128) * factor + 128, 0, 255).

Errors

Returns an error if the frame buffer size does not match the configured dimensions.

pub fn adjust_saturation(&self, frame: &[u8], factor: f32) -> Result<Vec<u8>>

Simulate GPU-accelerated saturation adjustment for RGB frames (3 channels).

Converts each RGB pixel to HSL, multiplies the S component by factor, then converts back to RGB. For non-RGB frames this is a no-op copy.

Errors

Returns an error if the frame buffer size does not match the configured dimensions.

pub fn frame_difference( &self, frame_a: &[u8], frame_b: &[u8], ) -> Result<Vec<u8>>

Compute frame difference (absolute difference per pixel).

Errors

Returns an error if either frame buffer size does not match the configured dimensions.

pub fn mean_absolute_error(&self, frame_a: &[u8], frame_b: &[u8]) -> Result<f64>

Compute mean absolute error between two frames.

Errors

Returns an error if either frame buffer size does not match the configured dimensions.

pub fn config(&self) -> &FrameProcessConfig

Get the configuration.

pub fn process_frame( &self, frame: &[u8], brightness_delta: i16, ) -> Result<FrameProcessResult>

Process a frame and return a FrameProcessResult with timing information.

This is a convenience wrapper that applies brightness adjustment and records the simulated GPU processing time.

Errors

Returns an error if the frame buffer size does not match the configured dimensions.