Function av_buffer_is_writable

libavutil/buffer.c:147–153

}

int av_buffer_is_writable(const AVBufferRef *buf)
{
    if (buf->buffer->flags & AV_BUFFER_FLAG_READONLY)
        return 0;

    return atomic_load(&buf->buffer->refcount) == 1;
}

void *av_buffer_get_opaque(const AVBufferRef *buf)
{