Trait FramePool 

pub trait FramePool:
    Send
    + Sync
    + Debug {
    // Required method
    fn acquire(&self, size: usize) -> Option<PooledBuffer>;

    // Provided method
    fn release(&self, _buffer: Vec<u8>) { ... }
}

A trait for frame buffer pooling.

Implementing this trait allows custom memory management strategies for decoded video frames. This is useful for reducing allocation pressure during real-time video playback.

Thread Safety

Implementations must be Send + Sync to allow sharing across threads.

Example Implementation

use ff_common::{FramePool, PooledBuffer};
use std::sync::{Arc, Mutex};

struct SimplePool {
    buffers: Mutex<Vec<Vec<u8>>>,
    buffer_size: usize,
}

impl FramePool for SimplePool {
    fn acquire(&self, size: usize) -> Option<PooledBuffer> {
        // Implementation...
        None
    }
}

Required Methods

fn acquire(&self, size: usize) -> Option<PooledBuffer>

Acquires a buffer of at least the specified size from the pool.

Arguments

• size - The minimum required buffer size in bytes.

Returns

Returns Some(PooledBuffer) if a buffer is available, or None if the pool is exhausted. When None is returned, the decoder will allocate a new buffer directly.

Thread Safety

This method may be called from multiple threads concurrently.

Provided Methods

fn release(&self, _buffer: Vec<u8>)

Returns a buffer to the pool.

This method is called automatically when a PooledBuffer is dropped. The default implementation does nothing (the buffer is simply dropped).

Arguments

• buffer - The buffer data to return to the pool.

Implementors

impl FramePool for SimpleFramePool