libmpcodecs/vf_swapuv.c

   1 /*
   2     Copyright (C) 2002 Michael Niedermayer <michaelni@gmx.at>
   3
   4     This program 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     This program 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
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  17 */
  18
  19 #include <stdio.h>
  20 #include <stdlib.h>
  21 #include <string.h>
  22 #include <inttypes.h>
  23 #include <assert.h>
  24
  25 #include "config.h"
  26 #include "mp_msg.h"
  27
  28 #ifdef HAVE_MALLOC_H
  29 #include <malloc.h>
  30 #endif
  31
  32 #include "img_format.h"
  33 #include "mp_image.h"
  34 #include "vf.h"
  35
  36
  37 //===========================================================================//
  38
  39 static void get_image(struct vf_instance_s* vf, mp_image_t *mpi){
  40     mp_image_t *dmpi= vf_get_image(vf->next, mpi->imgfmt,
  41         mpi->type, mpi->flags, mpi->w, mpi->h);
  42
  43     mpi->planes[0]=dmpi->planes[0];
  44     mpi->planes[1]=dmpi->planes[2];
  45     mpi->planes[2]=dmpi->planes[1];
  46     mpi->stride[0]=dmpi->stride[0];
  47     mpi->stride[1]=dmpi->stride[2];
  48     mpi->stride[2]=dmpi->stride[1];
  49     mpi->width=dmpi->width;
  50
  51     mpi->flags|=MP_IMGFLAG_DIRECT;
  52     mpi->priv=(void*)dmpi;
  53 }
  54
  55 static int put_image(struct vf_instance_s* vf, mp_image_t *mpi, double pts){
  56     mp_image_t *dmpi;
  57
  58     if(mpi->flags&MP_IMGFLAG_DIRECT){
  59         dmpi=(mp_image_t*)mpi->priv;
  60     } else {
  61         dmpi=vf_get_image(vf->next, mpi->imgfmt, MP_IMGTYPE_EXPORT, 0, mpi->w, mpi->h);
  62         assert(mpi->flags&MP_IMGFLAG_PLANAR);
  63         dmpi->planes[0]=mpi->planes[0];
  64         dmpi->planes[1]=mpi->planes[2];
  65         dmpi->planes[2]=mpi->planes[1];
  66         dmpi->stride[0]=mpi->stride[0];
  67         dmpi->stride[1]=mpi->stride[2];
  68         dmpi->stride[2]=mpi->stride[1];
  69         dmpi->width=mpi->width;
  70     }
  71
  72     vf_clone_mpi_attributes(dmpi, mpi);
  73
  74     return vf_next_put_image(vf,dmpi, pts);
  75 }
  76
  77 //===========================================================================//
  78
  79 static int query_format(struct vf_instance_s* vf, unsigned int fmt){
  80         switch(fmt)
  81         {
  82         case IMGFMT_YV12:
  83         case IMGFMT_I420:
  84         case IMGFMT_IYUV:
  85         case IMGFMT_YVU9:
  86         case IMGFMT_444P:
  87         case IMGFMT_422P:
  88         case IMGFMT_411P:
  89                 return vf_next_query_format(vf, fmt);
  90         }
  91         return 0;
  92 }
  93
  94 static int open(vf_instance_t *vf, char* args){
  95     vf->put_image=put_image;
  96     vf->get_image=get_image;
  97     vf->query_format=query_format;
  98     return 1;
  99 }
 100
 101 const vf_info_t vf_info_swapuv = {
 102     "UV swapper",
 103     "swapuv",
 104     "Michael Niedermayer",
 105     "",
 106     open,
 107     NULL
 108 };
 109
 110 //===========================================================================//