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 #include "help_mp.h"
  27
  28 #include "img_format.h"
  29 #include "mp_image.h"
  30 #include "vf.h"
  31
  32 #include "libvo/fastmemcpy.h"
  33
  34 //===========================================================================//
  35
  36 static int config(struct vf_instance* vf,
  37         int width, int height, int d_width, int d_height,
  38         unsigned int flags, unsigned int outfmt){
  39
  40     if(vf_next_query_format(vf,IMGFMT_YV12)<=0){
  41         mp_tmsg(MSGT_VFILTER, MSGL_WARN, "%s not supported by next filter/vo :(\n", "YVU9");
  42         return 0;
  43     }
  44
  45     return vf_next_config(vf,width,height,d_width,d_height,flags,IMGFMT_YV12);
  46 }
  47
  48 static int put_image(struct vf_instance* vf, mp_image_t *mpi, double pts){
  49     mp_image_t *dmpi;
  50     int y,w,h;
  51
  52     // hope we'll get DR buffer:
  53     dmpi=vf_get_image(vf->next,IMGFMT_YV12,
  54         MP_IMGTYPE_TEMP, 0/*MP_IMGFLAG_ACCEPT_STRIDE*/,
  55         mpi->w, mpi->h);
  56
  57     for(y=0;y<mpi->h;y++)
  58         fast_memcpy(dmpi->planes[0]+dmpi->stride[0]*y,
  59                mpi->planes[0]+mpi->stride[0]*y,
  60                mpi->w);
  61
  62     w=mpi->w/4; h=mpi->h/2;
  63     for(y=0;y<h;y++){
  64         unsigned char* s=mpi->planes[1]+mpi->stride[1]*(y>>1);
  65         unsigned char* d=dmpi->planes[1]+dmpi->stride[1]*y;
  66         int x;
  67         for(x=0;x<w;x++) d[2*x]=d[2*x+1]=s[x];
  68     }
  69     for(y=0;y<h;y++){
  70         unsigned char* s=mpi->planes[2]+mpi->stride[2]*(y>>1);
  71         unsigned char* d=dmpi->planes[2]+dmpi->stride[2]*y;
  72         int x;
  73         for(x=0;x<w;x++) d[2*x]=d[2*x+1]=s[x];
  74     }
  75
  76     vf_clone_mpi_attributes(dmpi, mpi);
  77
  78     return vf_next_put_image(vf,dmpi, pts);
  79 }
  80
  81 //===========================================================================//
  82
  83 static int query_format(struct vf_instance* vf, unsigned int fmt){
  84     if (fmt == IMGFMT_YVU9 || fmt == IMGFMT_IF09)
  85         return vf_next_query_format(vf,IMGFMT_YV12) & (~VFCAP_CSP_SUPPORTED_BY_HW);
  86     return 0;
  87 }
  88
  89 static int open(vf_instance_t *vf, char* args){
  90     vf->config=config;
  91     vf->put_image=put_image;
  92     vf->query_format=query_format;
  93     return 1;
  94 }
  95
  96 const vf_info_t vf_info_yvu9 = {
  97     "fast YVU9->YV12 conversion",
  98     "yvu9",
  99     "alex",
 100     "",
 101     open,
 102     NULL
 103 };
 104
 105 //===========================================================================//