Function ffav_sys::av_bprint_get_buffer

pub unsafe extern "C" fn av_bprint_get_buffer(
    buf: *mut AVBPrint, 
    size: c_uint, 
    mem: *mut *mut c_uchar, 
    actual_size: *mut c_uint
)

Allocate bytes in the buffer for external use.

@param[in] buf buffer structure @param[in] size required size @param[out] mem pointer to the memory area @param[out] actual_size size of the memory area after allocation; can be larger or smaller than size