proc av_murmur3_alloc(): AVMurMur3 {.importc, cdecl, ...raises: [], tags: [],
                                     forbids: [].}

proc av_murmur3_final(c: ptr AVMurMur3; dst: ptr uint8) {.importc, cdecl,
    ...raises: [], tags: [], forbids: [].}

proc av_murmur3_init(c: ptr AVMurMur3) {.importc, cdecl, ...raises: [], tags: [],
    forbids: [].}

proc av_murmur3_init_seeded(c: ptr AVMurMur3; seed: uint64) {.importc, cdecl,
    ...raises: [], tags: [], forbids: [].}

proc av_murmur3_update(c: ptr AVMurMur3; src: ptr uint8; len: csize_t) {.
    importc, cdecl, ...raises: [], tags: [], forbids: [].}