libmpcodecs/vf_lavcdeint.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 #include "libavcodec/avcodec.h"
  31
  32
  33 struct vf_priv_s
  34 {
  35   int       width, height;
  36   int       pix_fmt;
  37 };
  38
  39 /* Support for avcodec's built-in deinterlacer.
  40  * Based on vf_lavc.c
  41  */
  42
  43 //===========================================================================//
  44
  45
  46 /* Convert mplayer's IMGFMT_* to avcodec's PIX_FMT_* for the supported
  47  * IMGFMT's, and return -1 if the deinterlacer doesn't support
  48  * that format (-1 because 0 is a valid PIX_FMT).
  49  */
  50 /* The deinterlacer supports planer 4:2:0, 4:2:2, and 4:4:4 YUV */
  51 static int
  52 imgfmt_to_pixfmt (int imgfmt)
  53 {
  54   switch(imgfmt)
  55     {
  56       /* I hope I got all the supported formats */
  57
  58       /* 4:2:0 */
  59     case IMGFMT_YV12:
  60     case IMGFMT_I420:
  61     case IMGFMT_IYUV:
  62       return PIX_FMT_YUV420P;
  63       break;
  64
  65 #if 0
  66       /* 4:2:2 */
  67     case IMGFMT_UYVY:
  68     case IMGFMT_UYNV:
  69     case IMGFMT_Y422:
  70     case IMGFMT_YUY2:
  71     case IMGFMT_YUNV:
  72     case IMGFMT_YVYU:
  73     case IMGFMT_Y42T:
  74     case IMGFMT_V422:
  75     case IMGFMT_V655:
  76       return PIX_FMT_YUV422P;
  77       break;
  78 #endif
  79
  80       /* Are there any _planar_ YUV 4:4:4 formats? */
  81
  82     default:
  83       return -1;
  84     }
  85 }
  86
  87
  88 static int
  89 config (struct vf_instance *vf,
  90         int width, int height, int d_width, int d_height,
  91         unsigned int flags, unsigned int outfmt)
  92 {
  93   struct vf_priv_s *priv = vf->priv;
  94
  95   priv->pix_fmt = imgfmt_to_pixfmt(outfmt);
  96   if(priv->pix_fmt == -1)
  97     return 0;
  98
  99   /* The deinterlacer will fail if this is false */
 100   if ((width & 3) != 0 || (height & 3) != 0)
 101     return 0;
 102
 103   /* If we get here, the deinterlacer is guaranteed not to fail */
 104
 105   priv->width  = width;
 106   priv->height = height;
 107
 108   return vf_next_config(vf,
 109                         width, height,
 110                         d_width, d_height,
 111                         flags, outfmt);
 112 }
 113
 114 static int
 115 put_image (struct vf_instance *vf, mp_image_t *mpi, double pts)
 116 {
 117   struct vf_priv_s *priv = vf->priv;
 118   mp_image_t* dmpi;
 119   AVPicture pic;
 120   AVPicture lavc_picture;
 121
 122   lavc_picture.data[0]     = mpi->planes[0];
 123   lavc_picture.data[1]     = mpi->planes[1];
 124   lavc_picture.data[2]     = mpi->planes[2];
 125   lavc_picture.linesize[0] = mpi->stride[0];
 126   lavc_picture.linesize[1] = mpi->stride[1];
 127   lavc_picture.linesize[2] = mpi->stride[2];
 128
 129   dmpi = vf_get_image(vf->next, mpi->imgfmt,
 130                       MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE,
 131                       priv->width, priv->height);
 132
 133   pic.data[0]     = dmpi->planes[0];
 134   pic.data[1]     = dmpi->planes[1];
 135   pic.data[2]     = dmpi->planes[2];
 136   pic.linesize[0] = dmpi->stride[0];
 137   pic.linesize[1] = dmpi->stride[1];
 138   pic.linesize[2] = dmpi->stride[2];
 139
 140   if (avpicture_deinterlace(&pic, &lavc_picture,
 141                             priv->pix_fmt, priv->width, priv->height) < 0)
 142     {
 143       /* This should not happen -- see config() */
 144       return 0;
 145     }
 146
 147   return vf_next_put_image(vf, dmpi, pts);
 148 }
 149
 150
 151 static int
 152 query_format (struct vf_instance *vf, unsigned int fmt)
 153 {
 154   if(imgfmt_to_pixfmt(fmt) == -1)
 155     return 0;
 156
 157   return vf_next_query_format(vf,fmt);
 158 }
 159
 160
 161 static int
 162 vf_open(vf_instance_t *vf, char *args)
 163 {
 164   /* We don't have any args */
 165   (void) args;
 166
 167   vf->config       = config;
 168   vf->put_image    = put_image;
 169   vf->query_format = query_format;
 170   vf->priv         = malloc(sizeof(struct vf_priv_s));
 171   memset(vf->priv,0,sizeof(struct vf_priv_s));
 172
 173   return 1;
 174 }
 175
 176
 177 const vf_info_t vf_info_lavcdeint = {
 178     "libavcodec's deinterlacing filter",
 179     "lavcdeint",
 180     "Joe Rabinoff",
 181     "libavcodec's internal deinterlacer, in case you don't like "
 182       "the builtin ones (invoked with -pp or -npp)",
 183     vf_open,
 184     NULL
 185 };
 186
 187
 188 //===========================================================================//