RV1126 使用上NV12快速转换为RGB888的错误

我使用RV1126做图像处理，因为算法要求图像数据是RGB888的，我们默认抓出来的是NV12格式的，参考librga文档，我实现了快速转换函数。

int nv12_to_rgb24_fast(unsigned char *yuvbuffer, unsigned char *rga_buffer, int width, int height)
{
  rga_buffer_t src = wrapbuffer_virtualaddr(yuvbuffer, width, height,  RK_FORMAT_YCrCb_420_SP);
  rga_buffer_t dst = wrapbuffer_virtualaddr(rga_buffer, width, height, RK_FORMAT_BGR_888);
  IM_STATUS STATUS = imcvtcolor(src, dst, RK_FORMAT_YCrCb_420_SP, RK_FORMAT_BGR_888);
  if (STATUS != IM_STATUS_SUCCESS) {
    log_e("imcvtcolor failed: %s\n", imStrError(STATUS));
    return -1;
  }
   return 0;
}

大体调用流程为：

unsigned char* rgbdata = (unsigned char*)malloc(IR_WIDTH*IR_HEIGHT*3);
while (!isExit) {
    // IR videv = 1
    buffer = RK_MPI_SYS_GetMediaBuffer(RK_ID_VI, viChn, -1);
    if (!buffer)  {
        continue;
    }
    if(index++ %2 ==0 ) {
            last_cts = get_system_cts();
            nv12_to_rgb24_fast((unsigned char*)RK_MPI_MB_GetPtr(buffer), rgbdata, IR_WIDTH, IR_HEIGHT);
            current_cts = get_system_cts();
            log_d("nv122rgb time :%lu", current_cts - last_cts);
    }
}

运行的时候报错 ：imcvtcolor failed: Unsupported function: Src unsupported input BP format.
请问下librga支持这种操作吗？如果不行，请问还有其他快速转换的API可调用不？