libmpcodecs/vf_softpulldown.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
  23 #include "config.h"
  24 #include "mp_msg.h"
  25
  26 #include "img_format.h"
  27 #include "mp_image.h"
  28 #include "vf.h"
  29
  30 #include "libvo/fastmemcpy.h"
  31
  32 struct vf_priv_s {
  33         int state;
  34         long long in;
  35         long long out;
  36 };
  37
  38 static int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts)
  39 {
  40         mp_image_t *dmpi;
  41         int ret = 0;
  42         int flags = mpi->fields;
  43         int state = vf->priv->state;
  44
  45         dmpi = vf_get_image(vf->next, mpi->imgfmt,
  46                             MP_IMGTYPE_STATIC, MP_IMGFLAG_ACCEPT_STRIDE |
  47                             MP_IMGFLAG_PRESERVE, mpi->width, mpi->height);
  48
  49         vf->priv->in++;
  50
  51         if ((state == 0 &&
  52              !(flags & MP_IMGFIELD_TOP_FIRST)) ||
  53             (state == 1 &&
  54              flags & MP_IMGFIELD_TOP_FIRST)) {
  55                 mp_msg(MSGT_VFILTER, MSGL_WARN,
  56                        "softpulldown: Unexpected field flags: state=%d top_field_first=%d repeat_first_field=%d\n",
  57                        state,
  58                        (flags & MP_IMGFIELD_TOP_FIRST) != 0,
  59                        (flags & MP_IMGFIELD_REPEAT_FIRST) != 0);
  60                 state ^= 1;
  61         }
  62
  63         if (state == 0) {
  64                 ret = vf_next_put_image(vf, mpi, MP_NOPTS_VALUE);
  65                 vf->priv->out++;
  66                 if (flags & MP_IMGFIELD_REPEAT_FIRST) {
  67                         my_memcpy_pic(dmpi->planes[0],
  68                                    mpi->planes[0], mpi->w, mpi->h/2,
  69                                    dmpi->stride[0]*2, mpi->stride[0]*2);
  70                         if (mpi->flags & MP_IMGFLAG_PLANAR) {
  71                                 my_memcpy_pic(dmpi->planes[1],
  72                                               mpi->planes[1],
  73                                               mpi->chroma_width,
  74                                               mpi->chroma_height/2,
  75                                               dmpi->stride[1]*2,
  76                                               mpi->stride[1]*2);
  77                                 my_memcpy_pic(dmpi->planes[2],
  78                                               mpi->planes[2],
  79                                               mpi->chroma_width,
  80                                               mpi->chroma_height/2,
  81                                               dmpi->stride[2]*2,
  82                                               mpi->stride[2]*2);
  83                         }
  84                         state=1;
  85                 }
  86         } else {
  87                 my_memcpy_pic(dmpi->planes[0]+dmpi->stride[0],
  88                               mpi->planes[0]+mpi->stride[0], mpi->w, mpi->h/2,
  89                               dmpi->stride[0]*2, mpi->stride[0]*2);
  90                 if (mpi->flags & MP_IMGFLAG_PLANAR) {
  91                         my_memcpy_pic(dmpi->planes[1]+dmpi->stride[1],
  92                                       mpi->planes[1]+mpi->stride[1],
  93                                       mpi->chroma_width, mpi->chroma_height/2,
  94                                       dmpi->stride[1]*2, mpi->stride[1]*2);
  95                         my_memcpy_pic(dmpi->planes[2]+dmpi->stride[2],
  96                                       mpi->planes[2]+mpi->stride[2],
  97                                       mpi->chroma_width, mpi->chroma_height/2,
  98                                       dmpi->stride[2]*2, mpi->stride[2]*2);
  99                 }
 100                 ret = vf_next_put_image(vf, dmpi, MP_NOPTS_VALUE);
 101                 vf->priv->out++;
 102                 if (flags & MP_IMGFIELD_REPEAT_FIRST) {
 103                         ret |= vf_next_put_image(vf, mpi, MP_NOPTS_VALUE);
 104                         vf->priv->out++;
 105                         state=0;
 106                 } else {
 107                         my_memcpy_pic(dmpi->planes[0],
 108                                       mpi->planes[0], mpi->w, mpi->h/2,
 109                                       dmpi->stride[0]*2, mpi->stride[0]*2);
 110                         if (mpi->flags & MP_IMGFLAG_PLANAR) {
 111                                 my_memcpy_pic(dmpi->planes[1],
 112                                               mpi->planes[1],
 113                                               mpi->chroma_width,
 114                                               mpi->chroma_height/2,
 115                                               dmpi->stride[1]*2,
 116                                               mpi->stride[1]*2);
 117                                 my_memcpy_pic(dmpi->planes[2],
 118                                               mpi->planes[2],
 119                                               mpi->chroma_width,
 120                                               mpi->chroma_height/2,
 121                                               dmpi->stride[2]*2,
 122                                               mpi->stride[2]*2);
 123                         }
 124                 }
 125         }
 126
 127         vf->priv->state = state;
 128
 129         return ret;
 130 }
 131
 132 static int config(struct vf_instance *vf,
 133         int width, int height, int d_width, int d_height,
 134         unsigned int flags, unsigned int outfmt)
 135 {
 136         return vf_next_config(vf,width,height,d_width,d_height,flags,outfmt);
 137 }
 138
 139 static void uninit(struct vf_instance *vf)
 140 {
 141         mp_msg(MSGT_VFILTER, MSGL_INFO, "softpulldown: %lld frames in, %lld frames out\n", vf->priv->in, vf->priv->out);
 142         free(vf->priv);
 143 }
 144
 145 static int vf_open(vf_instance_t *vf, char *args)
 146 {
 147         struct vf_priv_s *p;
 148         vf->config = config;
 149         vf->put_image = put_image;
 150         vf->uninit = uninit;
 151         vf->default_reqs = VFCAP_ACCEPT_STRIDE;
 152         vf->priv = p = calloc(1, sizeof(struct vf_priv_s));
 153         vf->priv->state = 0;
 154         return 1;
 155 }
 156
 157 const vf_info_t vf_info_softpulldown = {
 158     "mpeg2 soft 3:2 pulldown",
 159     "softpulldown",
 160     "Tobias Diedrich <ranma+mplayer@tdiedrich.de>",
 161     "",
 162     vf_open,
 163     NULL
 164 };