libmpcodecs/vf_yvu9.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 "libvo/fastmemcpy.h"
  32
  33 //===========================================================================//
  34
  35 static int config(struct vf_instance *vf,
  36         int width, int height, int d_width, int d_height,
  37         unsigned int flags, unsigned int outfmt){
  38
  39     if(vf_next_query_format(vf,IMGFMT_YV12)<=0){
  40         mp_tmsg(MSGT_VFILTER, MSGL_WARN, "%s not supported by next filter/vo :(\n", "YVU9");
  41         return 0;
  42     }
  43
  44     return vf_next_config(vf,width,height,d_width,d_height,flags,IMGFMT_YV12);
  45 }
  46
  47 static int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts){
  48     mp_image_t *dmpi;
  49     int y,w,h;
  50
  51     // hope we'll get DR buffer:
  52     dmpi=vf_get_image(vf->next,IMGFMT_YV12,
  53         MP_IMGTYPE_TEMP, 0/*MP_IMGFLAG_ACCEPT_STRIDE*/,
  54         mpi->w, mpi->h);
  55
  56     for(y=0;y<mpi->h;y++)
  57         fast_memcpy(dmpi->planes[0]+dmpi->stride[0]*y,
  58                mpi->planes[0]+mpi->stride[0]*y,
  59                mpi->w);
  60
  61     w=mpi->w/4; h=mpi->h/2;
  62     for(y=0;y<h;y++){
  63         unsigned char* s=mpi->planes[1]+mpi->stride[1]*(y>>1);
  64         unsigned char* d=dmpi->planes[1]+dmpi->stride[1]*y;
  65         int x;
  66         for(x=0;x<w;x++) d[2*x]=d[2*x+1]=s[x];
  67     }
  68     for(y=0;y<h;y++){
  69         unsigned char* s=mpi->planes[2]+mpi->stride[2]*(y>>1);
  70         unsigned char* d=dmpi->planes[2]+dmpi->stride[2]*y;
  71         int x;
  72         for(x=0;x<w;x++) d[2*x]=d[2*x+1]=s[x];
  73     }
  74
  75     vf_clone_mpi_attributes(dmpi, mpi);
  76
  77     return vf_next_put_image(vf,dmpi, pts);
  78 }
  79
  80 //===========================================================================//
  81
  82 static int query_format(struct vf_instance *vf, unsigned int fmt){
  83     if (fmt == IMGFMT_YVU9 || fmt == IMGFMT_IF09)
  84         return vf_next_query_format(vf,IMGFMT_YV12) & (~VFCAP_CSP_SUPPORTED_BY_HW);
  85     return 0;
  86 }
  87
  88 static int vf_open(vf_instance_t *vf, char *args){
  89     vf->config=config;
  90     vf->put_image=put_image;
  91     vf->query_format=query_format;
  92     return 1;
  93 }
  94
  95 const vf_info_t vf_info_yvu9 = {
  96     "fast YVU9->YV12 conversion",
  97     "yvu9",
  98     "alex",
  99     "",
 100     vf_open,
 101     NULL
 102 };
 103
 104 //===========================================================================//