Function rsmpeg::ffi::av_fast_realloc

pub unsafe extern "C" fn av_fast_realloc(
    ptr: *mut c_void, 
    size: *mut u32, 
    min_size: u32
) -> *mut c_void

Reallocate the given buffer if it is not large enough, otherwise do nothing.

If the given buffer is NULL, then a new uninitialized buffer is allocated.

If the given buffer is not large enough, and reallocation fails, NULL is returned and *size is set to 0, but the original buffer is not changed or freed.

A typical use pattern follows:

@code{.c} uint8_t *buf = …; uint8_t *new_buf = av_fast_realloc(buf, &current_size, size_needed); if (!new_buf) { // Allocation failed; clean up original buffer av_freep(&buf); return AVERROR(ENOMEM); } @endcode

@param[in,out] ptr Already allocated buffer, or NULL @param[in,out] size Pointer to the size of buffer ptr. *size is updated to the new allocated size, in particular 0 in case of failure. @param[in] min_size Desired minimal size of buffer ptr @return ptr if the buffer is large enough, a pointer to newly reallocated buffer if the buffer was not large enough, or NULL in case of error @see av_realloc() @see av_fast_malloc()