text: #include "config.h"
  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  #include <inttypes.h>
  
  #include "mp_msg.h"
  
  #include "img_format.h"
  #include "mp_image.h"
  #include "vf.h"
  
  struct vf_priv_s {
      int csp;
  };
  
  //===========================================================================//
  
  static int config(struct vf_instance_s* vf,
          int width, int height, int d_width, int d_height,
  	unsigned int flags, unsigned int outfmt){
      return vf_next_config(vf, width, height, d_width, d_height, flags, outfmt);
  }
  
  static inline int clamp_y(int x){
      return (x > 235) ? 235 : (x < 16) ? 16 : x;
  }
  
  static inline int clamp_c(int x){
      return (x > 240) ? 240 : (x < 16) ? 16 : x;
  }
  
  static int put_image(struct vf_instance_s* vf, mp_image_t *mpi, double pts){
      int i,j;
      uint8_t *y_in, *cb_in, *cr_in;
      uint8_t *y_out, *cb_out, *cr_out;
  
      vf->dmpi=vf_get_image(vf->next,mpi->imgfmt,
  	MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE,
  	mpi->width, mpi->height);
      
      y_in = mpi->planes[0];
      cb_in = mpi->planes[1];
      cr_in = mpi->planes[2];
  
      y_out = vf->dmpi->planes[0];
      cb_out = vf->dmpi->planes[1];
      cr_out = vf->dmpi->planes[2];
      
      for (i = 0; i < mpi->height; i++)
  	for (j = 0; j < mpi->width; j++)
  	    y_out[i*vf->dmpi->stride[0]+j] = clamp_y(y_in[i*mpi->stride[0]+j]);
  
      for (i = 0; i < mpi->chroma_height; i++)
  	for (j = 0; j < mpi->chroma_width; j++)
  	{
  	    cb_out[i*vf->dmpi->stride[1]+j] = clamp_c(cb_in[i*mpi->stride[1]+j]);
  	    cr_out[i*vf->dmpi->stride[2]+j] = clamp_c(cr_in[i*mpi->stride[2]+j]);
  	}
      
      return vf_next_put_image(vf,vf->dmpi, pts);
  }
  
  //===========================================================================//
  
  static void uninit(struct vf_instance_s* vf){
  	free(vf->priv);
  }
  
  static int query_format(struct vf_instance_s* vf, unsigned int fmt){
      switch(fmt){
  	case IMGFMT_YV12:
  	case IMGFMT_I420:
  	case IMGFMT_IYUV:
  	    return 1;
      }
      return 0;
  }
  
  static int open(vf_instance_t *vf, char* args){
      vf->config=config;
      vf->put_image=put_image;
  //    vf->uninit=uninit;
      vf->query_format=query_format;
  //    vf->priv=calloc(1, sizeof(struct vf_priv_s));
  //    if (args)
  //	vf->priv->csp = atoi(args);
      return 1;
  }
  
  vf_info_t vf_info_yuvcsp = {
      "yuv colorspace converter",
      "yuvcsp",
      "Alex Beregszaszi",
      "",
      open,
      NULL
  };
  
  //===========================================================================//
  