libmpcodecs/vf_swapuv.c

   1 /*
   2  * Copyright (C) 2002 Michael Niedermayer <michaelni@gmx.at>
   3  *
   4  * This file is part of MPlayer.
   5  *
   6  * MPlayer is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * MPlayer is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  */
  20
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #include <inttypes.h>
  25 #include <assert.h>
  26
  27 #include "mp_msg.h"
  28 #include "img_format.h"
  29 #include "mp_image.h"
  30 #include "vf.h"
  31
  32
  33 //===========================================================================//
  34
  35 static void get_image(struct vf_instance *vf, mp_image_t *mpi){
  36     mp_image_t *dmpi= vf_get_image(vf->next, mpi->imgfmt,
  37         mpi->type, mpi->flags, mpi->w, mpi->h);
  38
  39     mpi->planes[0]=dmpi->planes[0];
  40     mpi->planes[1]=dmpi->planes[2];
  41     mpi->planes[2]=dmpi->planes[1];
  42     mpi->stride[0]=dmpi->stride[0];
  43     mpi->stride[1]=dmpi->stride[2];
  44     mpi->stride[2]=dmpi->stride[1];
  45     mpi->width=dmpi->width;
  46
  47     mpi->flags|=MP_IMGFLAG_DIRECT;
  48     mpi->priv=(void*)dmpi;
  49 }
  50
  51 static int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts){
  52     mp_image_t *dmpi;
  53
  54     if(mpi->flags&MP_IMGFLAG_DIRECT){
  55         dmpi=(mp_image_t*)mpi->priv;
  56     } else {
  57         dmpi=vf_get_image(vf->next, mpi->imgfmt, MP_IMGTYPE_EXPORT, 0, mpi->w, mpi->h);
  58         assert(mpi->flags&MP_IMGFLAG_PLANAR);
  59         dmpi->planes[0]=mpi->planes[0];
  60         dmpi->planes[1]=mpi->planes[2];
  61         dmpi->planes[2]=mpi->planes[1];
  62         dmpi->stride[0]=mpi->stride[0];
  63         dmpi->stride[1]=mpi->stride[2];
  64         dmpi->stride[2]=mpi->stride[1];
  65         dmpi->width=mpi->width;
  66     }
  67
  68     vf_clone_mpi_attributes(dmpi, mpi);
  69
  70     return vf_next_put_image(vf,dmpi, pts);
  71 }
  72
  73 //===========================================================================//
  74
  75 static int query_format(struct vf_instance *vf, unsigned int fmt){
  76         switch(fmt)
  77         {
  78         case IMGFMT_YV12:
  79         case IMGFMT_I420:
  80         case IMGFMT_IYUV:
  81         case IMGFMT_YVU9:
  82         case IMGFMT_444P:
  83         case IMGFMT_422P:
  84         case IMGFMT_411P:
  85                 return vf_next_query_format(vf, fmt);
  86         }
  87         return 0;
  88 }
  89
  90 static int vf_open(vf_instance_t *vf, char *args){
  91     vf->put_image=put_image;
  92     vf->get_image=get_image;
  93     vf->query_format=query_format;
  94     return 1;
  95 }
  96
  97 const vf_info_t vf_info_swapuv = {
  98     "UV swapper",
  99     "swapuv",
 100     "Michael Niedermayer",
 101     "",
 102     vf_open,
 103     NULL
 104 };
 105
 106 //===========================================================================//