libmpcodecs/vf_fil.c

   1 /*
   2  * This file is part of MPlayer.
   3  *
   4  * MPlayer is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * MPlayer is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17  */
  18
  19 #include <stdio.h>
  20 #include <stdlib.h>
  21 #include <string.h>
  22
  23 #include "config.h"
  24 #include "mp_msg.h"
  25
  26 #include "mp_image.h"
  27 #include "vf.h"
  28
  29 struct vf_priv_s {
  30     int interleave;
  31     int height;
  32     int width;
  33     int stridefactor;
  34 };
  35
  36 //===========================================================================//
  37
  38 static int config(struct vf_instance *vf,
  39         int width, int height, int d_width, int d_height,
  40         unsigned int flags, unsigned int outfmt){
  41         int pixel_stride= (width+15)&~15; //FIXME this is ust a guess ... especially for non planar its somewhat bad one
  42
  43 #if 0
  44     if(mpi->flags&MP_IMGFLAG_PLANAR)
  45         pixel_stride= mpi->stride[0];
  46     else
  47         pixel_stride= 8*mpi->stride[0] / mpi->bpp;
  48
  49 #endif
  50
  51     if(vf->priv->interleave){
  52         vf->priv->height= 2*height;
  53         vf->priv->width= width - (pixel_stride/2);
  54         vf->priv->stridefactor=1;
  55     }else{
  56         vf->priv->height= height/2;
  57         vf->priv->width= width + pixel_stride;
  58         vf->priv->stridefactor=4;
  59     }
  60 //printf("hX %d %d %d\n", vf->priv->width,vf->priv->height,vf->priv->stridefactor);
  61
  62     return vf_next_config(vf, vf->priv->width, vf->priv->height,
  63         (d_width*vf->priv->stridefactor)>>1, 2*d_height/vf->priv->stridefactor, flags, outfmt);
  64 }
  65
  66 static int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts){
  67     if(mpi->flags&MP_IMGFLAG_DIRECT){
  68         // we've used DR, so we're ready...
  69         return vf_next_put_image(vf,(mp_image_t*)mpi->priv, pts);
  70     }
  71
  72     vf->dmpi=vf_get_image(vf->next,mpi->imgfmt,
  73         MP_IMGTYPE_EXPORT, MP_IMGFLAG_ACCEPT_STRIDE,
  74         vf->priv->width, vf->priv->height);
  75
  76     // set up mpi as a double-stride image of dmpi:
  77     vf->dmpi->planes[0]=mpi->planes[0];
  78     vf->dmpi->stride[0]=(mpi->stride[0]*vf->priv->stridefactor)>>1;
  79     if(vf->dmpi->flags&MP_IMGFLAG_PLANAR){
  80         vf->dmpi->planes[1]=mpi->planes[1];
  81         vf->dmpi->stride[1]=(mpi->stride[1]*vf->priv->stridefactor)>>1;
  82         vf->dmpi->planes[2]=mpi->planes[2];
  83         vf->dmpi->stride[2]=(mpi->stride[2]*vf->priv->stridefactor)>>1;
  84     } else
  85         vf->dmpi->planes[1]=mpi->planes[1]; // passthru bgr8 palette!!!
  86
  87     return vf_next_put_image(vf,vf->dmpi, pts);
  88 }
  89
  90 //===========================================================================//
  91
  92 static void uninit(struct vf_instance *vf)
  93 {
  94         free(vf->priv);
  95 }
  96
  97 static int vf_open(vf_instance_t *vf, char *args){
  98     vf->config=config;
  99     vf->put_image=put_image;
 100     vf->uninit=uninit;
 101     vf->default_reqs=VFCAP_ACCEPT_STRIDE;
 102     vf->priv=calloc(1, sizeof(struct vf_priv_s));
 103     vf->priv->interleave= args && (*args == 'i');
 104     return 1;
 105 }
 106
 107 const vf_info_t vf_info_fil = {
 108     "fast (de)interleaver",
 109     "fil",
 110     "Michael Niedermayer",
 111     "",
 112     vf_open,
 113     NULL
 114 };
 115
 116 //===========================================================================//