/*
  * Copyright (C) 2012 Peng Gao <peng@multicorewareinc.com>
  * Copyright (C) 2012 Li   Cao <li@multicorewareinc.com>
  * Copyright (C) 2012 Wei  Gao <weigao@multicorewareinc.com>
  *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
  * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 #include "opencl_internal.h"
 #include "libavutil/log.h"
 

 int avpriv_opencl_set_parameter(FFOpenclParam *opencl_param, ...)

 {
     int ret = 0;
     va_list arg_ptr;
     void *param;
     size_t param_size;
     cl_int status;
     if (!opencl_param->kernel) {
         av_log(opencl_param->ctx, AV_LOG_ERROR, "OpenCL kernel must be set\n");
         return AVERROR(EINVAL);
     }
     va_start(arg_ptr, opencl_param);
     do {
         param = va_arg(arg_ptr, void *);
         if (!param)
             break;
         param_size = va_arg(arg_ptr, size_t);
         if (!param_size) {
             av_log(opencl_param->ctx, AV_LOG_ERROR, "Parameter size must not be 0\n");
             ret = AVERROR(EINVAL);
             goto end;
         }
         status = clSetKernelArg(opencl_param->kernel, opencl_param->param_num, param_size, param);
         if (status != CL_SUCCESS) {

             av_log(opencl_param->ctx, AV_LOG_ERROR, "Cannot set kernel argument: %s\n", av_opencl_errstr(status));

             ret = AVERROR_EXTERNAL;
             goto end;
         }
         opencl_param->param_num++;
     } while (param && param_size);
 end:
     va_end(arg_ptr);
     return ret;
 }