proc avcodec_dct_alloc(): ptr AVDCT {.importc, cdecl, ...raises: [], tags: [],
                                      forbids: [].}

proc avcodec_dct_get_class(): ptr AVClass {.importc, cdecl, ...raises: [],
    tags: [], forbids: [].}

proc avcodec_dct_init(a1: ptr AVDCT): cint {.importc, cdecl, ...raises: [],
    tags: [], forbids: [].}