/*
  * 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
  */
 
 #ifndef AVFILTER_OPENCL_H
 #define AVFILTER_OPENCL_H
 
 #include "libavutil/buffer.h"
 #include "libavutil/hwcontext.h"
 #include "libavutil/hwcontext_opencl.h"
 #include "libavutil/pixfmt.h"
 
 #include "avfilter.h"
 
 typedef struct OpenCLFilterContext {
     const AVClass     *class;
 
     AVBufferRef       *device_ref;
     AVHWDeviceContext *device;
     AVOpenCLDeviceContext *hwctx;
 
     cl_program         program;
 
     enum AVPixelFormat output_format;
     int                output_width;
     int                output_height;
 } OpenCLFilterContext;
 
 /**
  * Return that all inputs and outputs support only AV_PIX_FMT_OPENCL.
  */
 int ff_opencl_filter_query_formats(AVFilterContext *avctx);
 
 /**
  * Check that the input link contains a suitable hardware frames
  * context and extract the device from it.
  */
 int ff_opencl_filter_config_input(AVFilterLink *inlink);
 
 /**
  * Create a suitable hardware frames context for the output.
  */
 int ff_opencl_filter_config_output(AVFilterLink *outlink);
 
 /**
  * Initialise an OpenCL filter context.
  */
 int ff_opencl_filter_init(AVFilterContext *avctx);
 
 /**
  * Uninitialise an OpenCL filter context.
  */
 void ff_opencl_filter_uninit(AVFilterContext *avctx);
 
 /**
  * Load a new OpenCL program from strings in memory.
  *
  * Creates a new program and compiles it for the current device.
  * Will log any build errors if compilation fails.
  */
 int ff_opencl_filter_load_program(AVFilterContext *avctx,
                                   const char **program_source_array,
                                   int nb_strings);
 
 /**
  * Load a new OpenCL program from a file.
  *
  * Same as ff_opencl_filter_load_program(), but from a file.
  */
 int ff_opencl_filter_load_program_from_file(AVFilterContext *avctx,
                                             const char *filename);
 
 #endif /* AVFILTER_OPENCL_H */