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vf_fil.c
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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 {
31  int height;
32  int width;
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 ff_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 ff_vf_next_put_image(vf,(mp_image_t*)mpi->priv, pts);
70  }
71 
72  vf->dmpi=ff_vf_get_image(vf->next,mpi->imgfmt,
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 ff_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;
102  vf->priv=calloc(1, sizeof(struct vf_priv_s));
103  vf->priv->interleave= args && (*args == 'i');
104  return 1;
105 }
106 
108  "fast (de)interleaver",
109  "fil",
110  "Michael Niedermayer",
111  "",
112  vf_open,
113  NULL
114 };
115 
116 //===========================================================================//