libmpcodecs/vf_dvbscale.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <string.h>
   4 #include <inttypes.h>
   5
   6 #include "config.h"
   7 #include "mp_msg.h"
   8
   9 #include "img_format.h"
  10 #include "mp_image.h"
  11 #include "vf.h"
  12
  13 struct vf_priv_s {
  14     int aspect;
  15 };
  16
  17 //===========================================================================//
  18
  19 static int config(struct vf_instance_s* vf,
  20         int width, int height, int d_width, int d_height,
  21         unsigned int flags, unsigned int outfmt){
  22
  23     int scaled_y=vf->priv->aspect*d_height/d_width;
  24
  25     d_width=width; // do X-scaling by hardware
  26     d_height=scaled_y;
  27
  28     return vf_next_config(vf,width,height,d_width,d_height,flags,outfmt);
  29 }
  30
  31 static int open(vf_instance_t *vf, char* args){
  32     vf->config=config;
  33     vf->default_caps=0;
  34     vf->priv=malloc(sizeof(struct vf_priv_s));
  35     vf->priv->aspect=768;
  36     if(args) vf->priv->aspect=atoi(args);
  37     return 1;
  38 }
  39
  40 const vf_info_t vf_info_dvbscale = {
  41     "calc Y scaling for DVB card",
  42     "dvbscale",
  43     "A'rpi",
  44     "",
  45     open,
  46     NULL
  47 };
  48
  49 //===========================================================================//