Function ff_vaapi_decode_make_param_buffer

libavcodec/vaapi_decode.c:34–73

int ff_vaapi_decode_make_param_buffer(AVCodecContext *avctx,
                                      VAAPIDecodePicture *pic,
                                      int type,
                                      const void *data,
                                      size_t size)
{
    VAAPIDecodeContext *ctx = avctx->internal->hwaccel_priv_data;
    VAStatus vas;

    av_assert0(pic->nb_param_buffers <= pic->nb_param_buffers_allocated);
    if (pic->nb_param_buffers == pic->nb_param_buffers_allocated) {
        VABufferID *tmp =
            av_realloc_array(pic->param_buffers,
                             pic->nb_param_buffers_allocated + 16,
                             sizeof(*pic->param_buffers));
        if (!tmp)
            return AVERROR(ENOMEM);

        pic->param_buffers = tmp;
        pic->nb_param_buffers_allocated += 16;
    }
    av_assert0(pic->nb_param_buffers + 1 <= pic->nb_param_buffers_allocated);

    vas = vaCreateBuffer(ctx->hwctx->display, ctx->va_context,
                         type, size, 1, (void*)data,
                         &pic->param_buffers[pic->nb_param_buffers]);
    if (vas != VA_STATUS_SUCCESS) {
        av_log(avctx, AV_LOG_ERROR, "Failed to create parameter "
               "buffer (type %d): %d (%s).\n",
               type, vas, vaErrorStr(vas));
        return AVERROR(EIO);
    }

    av_log(avctx, AV_LOG_DEBUG, "Param buffer (type %d, %zu bytes) "
           "is %#x.\n", type, size, pic->param_buffers[pic->nb_param_buffers]);

    ++pic->nb_param_buffers;

    return 0;
}

int ff_vaapi_decode_make_slice_buffer(AVCodecContext *avctx,
                                      VAAPIDecodePicture *pic,