Function av_tx_init

pub unsafe extern "C" fn av_tx_init(
    ctx: *mut *mut AVTXContext,
    tx: *mut Option<unsafe extern "C" fn(*mut AVTXContext, *mut c_void, *mut c_void, isize)>,
    type_: u32,
    inv: i32,
    len: i32,
    scale: *const c_void,
    flags: u64,
) -> i32

Initialize a transform context with the given configuration (i)MDCTs with an odd length are currently not supported.

@param ctx the context to allocate, will be NULL on error @param tx pointer to the transform function pointer to set @param type type the type of transform @param inv whether to do an inverse or a forward transform @param len the size of the transform in samples @param scale pointer to the value to scale the output if supported by type @param flags a bitmask of AVTXFlags or 0

@return 0 on success, negative error code on failure