Function av_buffer_replace

libavutil/buffer.c:233–257

}

int av_buffer_replace(AVBufferRef **pdst, const AVBufferRef *src)
{
    AVBufferRef *dst = *pdst;
    AVBufferRef *tmp;

    if (!src) {
        av_buffer_unref(pdst);
        return 0;
    }

    if (dst && dst->buffer == src->buffer) {
        /* make sure the data pointers match */
        dst->data = src->data;
        dst->size = src->size;
        return 0;
    }

    tmp = av_buffer_ref(src);
    if (!tmp)
        return AVERROR(ENOMEM);

    av_buffer_unref(pdst);
    *pdst = tmp;
    return 0;
}

AVBufferPool *av_buffer_pool_init2(size_t size, void *opaque,
                                   AVBufferRef* (*alloc)(void *opaque, size_t size),