libmpcodecs/vf_rgb2bgr.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 #include <inttypes.h>
  23
  24 #include "config.h"
  25 #include "mp_msg.h"
  26
  27 #include "img_format.h"
  28 #include "mp_image.h"
  29 #include "vf.h"
  30
  31 #include "libswscale/rgb2rgb.h"
  32
  33 //===========================================================================//
  34
  35 struct vf_priv_s {
  36     unsigned int fmt;
  37     int forced;
  38 };
  39
  40 static unsigned int getfmt(unsigned int outfmt,int forced){
  41     if(forced) switch(outfmt){
  42     case IMGFMT_RGB24:
  43     case IMGFMT_RGB32:
  44     case IMGFMT_BGR24:
  45     case IMGFMT_BGR32:
  46         return outfmt;
  47     }
  48     switch(outfmt){
  49     case IMGFMT_RGB24: return IMGFMT_BGR24;
  50     case IMGFMT_RGB32: return IMGFMT_BGR32;
  51     case IMGFMT_BGR24: return IMGFMT_RGB24;
  52     case IMGFMT_BGR32: return IMGFMT_RGB32;
  53     }
  54     return 0;
  55 }
  56
  57 static int config(struct vf_instance *vf,
  58         int width, int height, int d_width, int d_height,
  59         unsigned int flags, unsigned int outfmt){
  60     vf->priv->fmt=getfmt(outfmt,vf->priv->forced);
  61     return vf_next_config(vf,width,height,d_width,d_height,flags,vf->priv->fmt);
  62 }
  63
  64 static int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts){
  65     mp_image_t *dmpi;
  66
  67     // hope we'll get DR buffer:
  68     dmpi=vf_get_image(vf->next,vf->priv->fmt,
  69         MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE,
  70         mpi->w, mpi->h);
  71
  72     if(mpi->stride[0]!=dmpi->stride[0] || mpi->stride[0]!=mpi->w*(mpi->bpp/8)){
  73         int y;
  74         unsigned char* src=mpi->planes[0];
  75         unsigned char* dst=dmpi->planes[0];
  76         int srcsize=mpi->w*mpi->bpp/8;
  77         for(y=0;y<mpi->h;y++){
  78             if(mpi->bpp==32)
  79                 rgb32tobgr32(src,dst,srcsize);
  80             else
  81                 rgb24tobgr24(src,dst,srcsize);
  82             src+=mpi->stride[0];
  83             dst+=dmpi->stride[0];
  84         }
  85     } else {
  86         if(mpi->bpp==32)
  87             rgb32tobgr32(mpi->planes[0],dmpi->planes[0],mpi->w*mpi->h*4);
  88         else
  89             rgb24tobgr24(mpi->planes[0],dmpi->planes[0],mpi->w*mpi->h*3);
  90     }
  91
  92     return vf_next_put_image(vf,dmpi, pts);
  93 }
  94
  95 //===========================================================================//
  96
  97 static int query_format(struct vf_instance *vf, unsigned int outfmt){
  98     unsigned int fmt=getfmt(outfmt,vf->priv->forced);
  99     if(!fmt) return 0;
 100     return vf_next_query_format(vf,fmt) & (~VFCAP_CSP_SUPPORTED_BY_HW);
 101 }
 102
 103 static int vf_open(vf_instance_t *vf, char *args){
 104     vf->config=config;
 105     vf->put_image=put_image;
 106     vf->query_format=query_format;
 107     vf->priv=malloc(sizeof(struct vf_priv_s));
 108     vf->priv->forced=args && !strcasecmp(args,"swap");
 109     return 1;
 110 }
 111
 112 const vf_info_t vf_info_rgb2bgr = {
 113     "fast 24/32bpp RGB<->BGR conversion",
 114     "rgb2bgr",
 115     "A'rpi",
 116     "",
 117     vf_open,
 118     NULL
 119 };
 120
 121 //===========================================================================//