libmpcodecs/vf_fil.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <string.h>
   4
   5 #include "config.h"
   6 #include "mp_msg.h"
   7
   8 #include "mp_image.h"
   9 #include "vf.h"
  10
  11 struct vf_priv_s {
  12     int interleave;
  13     int height;
  14     int width;
  15     int stridefactor;
  16 };
  17
  18 //===========================================================================//
  19
  20 static int config(struct vf_instance* vf,
  21         int width, int height, int d_width, int d_height,
  22         unsigned int flags, unsigned int outfmt){
  23         int pixel_stride= (width+15)&~15; //FIXME this is ust a guess ... especially for non planar its somewhat bad one
  24
  25 #if 0
  26     if(mpi->flags&MP_IMGFLAG_PLANAR)
  27         pixel_stride= mpi->stride[0];
  28     else
  29         pixel_stride= 8*mpi->stride[0] / mpi->bpp;
  30
  31 #endif
  32
  33     if(vf->priv->interleave){
  34         vf->priv->height= 2*height;
  35         vf->priv->width= width - (pixel_stride/2);
  36         vf->priv->stridefactor=1;
  37     }else{
  38         vf->priv->height= height/2;
  39         vf->priv->width= width + pixel_stride;
  40         vf->priv->stridefactor=4;
  41     }
  42 //printf("hX %d %d %d\n", vf->priv->width,vf->priv->height,vf->priv->stridefactor);
  43
  44     return vf_next_config(vf, vf->priv->width, vf->priv->height,
  45         (d_width*vf->priv->stridefactor)>>1, 2*d_height/vf->priv->stridefactor, flags, outfmt);
  46 }
  47
  48 static int put_image(struct vf_instance* vf, mp_image_t *mpi, double pts){
  49     if(mpi->flags&MP_IMGFLAG_DIRECT){
  50         // we've used DR, so we're ready...
  51         return vf_next_put_image(vf,(mp_image_t*)mpi->priv, pts);
  52     }
  53
  54     vf->dmpi=vf_get_image(vf->next,mpi->imgfmt,
  55         MP_IMGTYPE_EXPORT, MP_IMGFLAG_ACCEPT_STRIDE,
  56         vf->priv->width, vf->priv->height);
  57
  58     // set up mpi as a double-stride image of dmpi:
  59     vf->dmpi->planes[0]=mpi->planes[0];
  60     vf->dmpi->stride[0]=(mpi->stride[0]*vf->priv->stridefactor)>>1;
  61     if(vf->dmpi->flags&MP_IMGFLAG_PLANAR){
  62         vf->dmpi->planes[1]=mpi->planes[1];
  63         vf->dmpi->stride[1]=(mpi->stride[1]*vf->priv->stridefactor)>>1;
  64         vf->dmpi->planes[2]=mpi->planes[2];
  65         vf->dmpi->stride[2]=(mpi->stride[2]*vf->priv->stridefactor)>>1;
  66     } else
  67         vf->dmpi->planes[1]=mpi->planes[1]; // passthru bgr8 palette!!!
  68
  69     return vf_next_put_image(vf,vf->dmpi, pts);
  70 }
  71
  72 //===========================================================================//
  73
  74 static void uninit(struct vf_instance* vf)
  75 {
  76         free(vf->priv);
  77 }
  78
  79 static int open(vf_instance_t *vf, char* args){
  80     vf->config=config;
  81     vf->put_image=put_image;
  82     vf->uninit=uninit;
  83     vf->default_reqs=VFCAP_ACCEPT_STRIDE;
  84     vf->priv=calloc(1, sizeof(struct vf_priv_s));
  85     vf->priv->interleave= args && (*args == 'i');
  86     return 1;
  87 }
  88
  89 const vf_info_t vf_info_fil = {
  90     "fast (de)interleaver",
  91     "fil",
  92     "Michael Niedermayer",
  93     "",
  94     open,
  95     NULL
  96 };
  97
  98 //===========================================================================//