proc av_mediacodec_alloc_context(): AVMediaCodecContext {.importc, cdecl,
    ...raises: [], tags: [], forbids: [].}

proc av_mediacodec_default_free(avctx: ptr AVCodecContext) {.importc, cdecl,
    ...raises: [], tags: [], forbids: [].}

proc av_mediacodec_default_init(avctx: ptr AVCodecContext;
                                ctx: ptr AVMediaCodecContext; surface: pointer): cint {.
    importc, cdecl, ...raises: [], tags: [], forbids: [].}

proc av_mediacodec_release_buffer(buffer: ptr AVMediaCodecContext; render: cint): cint {.
    importc, cdecl, ...raises: [], tags: [], forbids: [].}

proc av_mediacodec_render_buffer_at_time(buffer: ptr AVMediaCodecContext;
    time: int64): cint {.importc, cdecl, ...raises: [], tags: [], forbids: [].}