proc av_buffer_alloc(size: csize_t): ptr AVBufferRef {.importc, cdecl,
    ...raises: [], tags: [], forbids: [].}

proc av_buffer_allocz(size: csize_t): ptr AVBufferRef {.importc, cdecl,
    ...raises: [], tags: [], forbids: [].}

proc av_buffer_create(data: ptr uint8; size: csize_t;
                      free: proc (opaque: pointer; data: ptr uint8);
                      opaque: pointer; flags: cint): ptr AVBufferRef {.importc,
    cdecl, ...raises: [], tags: [], forbids: [].}

proc av_buffer_default_free(opaque: pointer; data: ptr uint8) {.importc, cdecl,
    ...raises: [], tags: [], forbids: [].}

proc av_buffer_get_opaque(buf: ptr AVBufferRef) {.importc, cdecl, ...raises: [],
    tags: [], forbids: [].}

proc av_buffer_get_ref_count(ubf: ptr AVBufferRef): cint {.importc, cdecl,
    ...raises: [], tags: [], forbids: [].}

proc av_buffer_is_writable(buf: ptr AVBufferRef): cint {.importc, cdecl,
    ...raises: [], tags: [], forbids: [].}

proc av_buffer_make_writable(buf: ptr ptr AVBufferRef): cint {.importc, cdecl,
    ...raises: [], tags: [], forbids: [].}

proc av_buffer_pool_buffer_get_opaque(ref: ptr AVBufferRef) {.importc, cdecl,
    ...raises: [], tags: [], forbids: [].}

proc av_buffer_pool_get(pool: ptr AVBufferPool): AVBufferRef {.importc, cdecl,
    ...raises: [], tags: [], forbids: [].}

proc av_buffer_pool_init(size: csize_t;
                         alloc: proc (size: csize_t): ptr AVBufferRef): AVBufferPool {.
    importc, cdecl, ...raises: [], tags: [], forbids: [].}

proc av_buffer_pool_init2(size: csize_t; opaque: pointer; alloc: proc (
    opaque: pointer; size: csize_t): ptr AVBufferRef;
                          pool_free: proc (opaque: pointer)): ptr AVBufferPool {.
    importc, cdecl, ...raises: [], tags: [], forbids: [].}

proc av_buffer_pool_uninit(pool: ptr ptr AVBufferPool) {.importc, cdecl,
    ...raises: [], tags: [], forbids: [].}

proc av_buffer_realloc(buf: ptr ptr AVBufferRef; size: csize_t): cint {.importc,
    cdecl, ...raises: [], tags: [], forbids: [].}

proc av_buffer_ref(buf: ptr AVBufferRef): ptr AVBufferRef {.importc, cdecl,
    ...raises: [], tags: [], forbids: [].}

proc av_buffer_replace(dst: ptr ptr AVBufferRef; src: ptr AVBufferRef): cint {.
    importc, cdecl, ...raises: [], tags: [], forbids: [].}

proc av_buffer_unref(buf: ptr ptr AVBufferRef) {.importc, cdecl, ...raises: [],
    tags: [], forbids: [].}