BufferPool Class¶
Description¶
BufferPool 实现了一个内存池，可用于自定义摄像头接入等需要反复分配相同大小内存的功能，降低内存分配耗时。
Constructor¶
block_size为每个 Buffer 的字节大小。
capacity为最大 Buffer 数量。
- C
void easyar_BufferPool__ctor(int block_size, int capacity, easyar_BufferPool * * Return)
- C++17
BufferPool(int block_size, int capacity)
- C++03
BufferPool(int block_size, int capacity)
- Java
public BufferPool(int block_size, int capacity)
- Kotlin
constructor(block_size: Int, capacity: Int)
- Objective-C
+ (easyar_BufferPool *) create:(int)block_size capacity:(int)capacity
- Swift
public convenience init(_ block_size: Int32, _ capacity: Int32)
- C#
public BufferPool(int block_size, int capacity)
block_size¶
每个 Buffer 的字节大小。
- C
int easyar_BufferPool_block_size(const easyar_BufferPool * This)
- C++17
int block_size()
- C++03
int block_size()
- Java
public int block_size()
- Kotlin
fun block_size(): Int
- Objective-C
- (int)block_size
- Swift
public func block_size() -> Int32
- C#
public virtual int block_size()
capacity¶
最大 Buffer 数量。
- C
int easyar_BufferPool_capacity(const easyar_BufferPool * This)
- C++17
int capacity()
- C++03
int capacity()
- Java
public int capacity()
- Kotlin
fun capacity(): Int
- Objective-C
- (int)capacity
- Swift
public func capacity() -> Int32
- C#
public virtual int capacity()
size¶
当前外部获得的 Buffer 数量。
- C
int easyar_BufferPool_size(const easyar_BufferPool * This)
- C++17
int size()
- C++03
int size()
- Java
public int size()
- Kotlin
fun size(): Int
- Objective-C
- (int)size
- Swift
public func size() -> Int32
- C#
public virtual int size()
tryAcquire¶
尝试获得内存块。如果当前外部获得的 Buffer 数量没有达到最大 Buffer 数量，则取出或分配一个新的 Buffer ，否则返回空。
- C
void easyar_BufferPool_tryAcquire(easyar_BufferPool * This, easyar_OptionalOfBuffer * Return)
- C++17
std::optional<std::shared_ptr<Buffer>> tryAcquire()
- C++03
void tryAcquire(Buffer * * Return)
- Java
public @Nullable Buffer tryAcquire()
- Kotlin
fun tryAcquire(): Buffer?
- Objective-C
- (easyar_Buffer *)tryAcquire
- Swift
public func tryAcquire() -> Buffer?
- C#
public virtual Optional<Buffer> tryAcquire()