proc av_get_alt_sample_fmt(sample_fmt: AVSampleFormat; planar: cint): AVSampleFormat {.
    importc, cdecl, ...raises: [], tags: [], forbids: [].}

proc av_get_bytes_per_sample(sample_fmt: AVSampleFormat): cint {.importc, cdecl,
    ...raises: [], tags: [], forbids: [].}

proc av_get_packed_sample_fmt(sample_fmt: AVSampleFormat): AVSampleFormat {.
    importc, cdecl, ...raises: [], tags: [], forbids: [].}

proc av_get_planar_sample_fmt(saample_fmt: AVSampleFormat): AVSampleFormat {.
    importc, cdecl, ...raises: [], tags: [], forbids: [].}

proc av_get_sample_fmt(name: cstring): AVSampleFormat {.importc, cdecl,
    ...raises: [], tags: [], forbids: [].}

proc av_get_sample_fmt_name(sample_fmt: AVSampleFormat): cstring {.importc,
    cdecl, ...raises: [], tags: [], forbids: [].}

proc av_get_sample_fmt_string(buf: cstring; buf_size: cint;
                              sample_fmt: AVSampleFormat): cstring {.importc,
    cdecl, ...raises: [], tags: [], forbids: [].}

proc av_sample_fmt_is_planar(sample_fmt: AVSampleFormat): cint {.importc, cdecl,
    ...raises: [], tags: [], forbids: [].}

proc av_samples_alloc(audio_data: ptr ptr uint8; linesize: ptr cint;
                      buf: ptr uint8; nb_channels: cint; nb_samples: cint;
                      sample_fmt: AVSampleFormat; align: cint): cint {.importc,
    cdecl, ...raises: [], tags: [], forbids: [].}

proc av_samples_alloc_array_and_samples(audio_data: ptr ptr uint8;
                                        linesize: ptr cint; buf: ptr uint8;
                                        nb_channels: cint; nb_samples: cint;
                                        sample_fmt: AVSampleFormat; align: cint): cint {.
    importc, cdecl, ...raises: [], tags: [], forbids: [].}

proc av_samples_copy(dst: ptr ptr uint8; src: ptr ptr uint8; dst_offset: cint;
                     src_offset: cint; nb_samples: cint; nb_channels: cint;
                     sample_fmt: AVSampleFormat): cint {.importc, cdecl,
    ...raises: [], tags: [], forbids: [].}

proc av_samples_fill_arrays(audio_data: ptr ptr uint8; linesize: ptr cint;
                            buf: ptr uint8; nb_channels: cint; nb_samples: cint;
                            sample_fmt: AVSampleFormat; align: cint): cint {.
    importc, cdecl, ...raises: [], tags: [], forbids: [].}

proc av_samples_get_buffer_size(linesize: ptr cint; nb_channels: cint;
                                nb_samples: cint; sample_fmt: AVSampleFormat;
                                align: cint): cint {.importc, cdecl, ...raises: [],
    tags: [], forbids: [].}

proc av_samples_set_silence(audio_data: ptr ptr uint8; offset: cint;
                            nb_samples: cint; nb_channels: cint;
                            sample_fmt: AVSampleFormat): cint {.importc, cdecl,
    ...raises: [], tags: [], forbids: [].}