From 97f32fdb238aa7e8a38298935ea1f47cf8817adf Mon Sep 17 00:00:00 2001
From: wm4 <wm4@nowhere>
Date: Tue, 27 Jan 2015 19:06:59 +0100
Subject: [PATCH] vf_phase: remove this filter

If you really want it, it's in libavfilter and can be used via vf_lavfi.
---
 DOCS/man/vf.rst         |  52 -------
 old-makefile            |   1 -
 video/filter/vf.c       |   2 -
 video/filter/vf_phase.c | 308 ----------------------------------------
 wscript_build.py        |   1 -
 5 files changed, 364 deletions(-)
 delete mode 100644 video/filter/vf_phase.c

diff --git a/DOCS/man/vf.rst b/DOCS/man/vf.rst
index 4e7302bbee..78eb5d16a2 100644
--- a/DOCS/man/vf.rst
+++ b/DOCS/man/vf.rst
@@ -468,58 +468,6 @@ Available filters are:
         absolute value of the parameter. Specify this option for pass 2, it
         makes no difference on pass 1.
 
-``phase[=t|b|p|a|u|T|B|A|U][:v]``
-    Delay interlaced video by one field time so that the field order changes.
-    The intended use is to fix PAL videos that have been captured with the
-    opposite field order to the film-to-video transfer. The options are:
-
-    ``t``
-        Capture field order top-first, transfer bottom-first. Filter will
-        delay the bottom field.
-
-    ``b``
-        Capture bottom-first, transfer top-first. Filter will delay the top
-        field.
-
-    ``p``
-        Capture and transfer with the same field order. This mode only exists
-        for the documentation of the other options to refer to, but if you
-        actually select it, the filter will faithfully do nothing ;-)
-
-    ``a``
-        Capture field order determined automatically by field flags, transfer
-        opposite. Filter selects among ``t`` and ``b`` modes on a frame by frame
-        basis using field flags. If no field information is available, then this
-        works just like ``u``.
-
-    ``u``
-        Capture unknown or varying, transfer opposite. Filter selects among
-        ``t`` and ``b`` on a frame by frame basis by analyzing the images and
-        selecting the alternative that produces best match between the fields.
-
-    ``T``
-        Capture top-first, transfer unknown or varying. Filter selects among
-        ``t`` and ``p`` using image analysis.
-
-    ``B``
-        Capture bottom-first, transfer unknown or varying. Filter selects
-        among ``b`` and ``p`` using image analysis.
-
-    ``A``
-        Capture determined by field flags, transfer unknown or varying. Filter
-        selects among ``t``, ``b`` and ``p`` using field flags and image
-        analysis. If no field information is available, then this works just
-        like ``U``. This is the default mode.
-
-    ``U``
-        Both capture and transfer unknown or varying. Filter selects among
-        ``t``, ``b`` and ``p`` using image analysis only.
-
-    ``v``
-        Verbose operation. Prints the selected mode for each frame and the
-        average squared difference between fields for ``t``, ``b``, and ``p``
-        alternatives. (Ignored when libavfilter is used.)
-
 ``yadif=[mode[:enabled=yes|no]]``
     Yet another deinterlacing filter
 
diff --git a/old-makefile b/old-makefile
index 2286588381..1c3e523bf0 100644
--- a/old-makefile
+++ b/old-makefile
@@ -263,7 +263,6 @@ SOURCES = audio/audio.c \
           video/filter/vf_mirror.c \
           video/filter/vf_noformat.c \
           video/filter/vf_noise.c \
-          video/filter/vf_phase.c \
           video/filter/vf_pullup.c \
           video/filter/vf_rotate.c \
           video/filter/vf_scale.c \
diff --git a/video/filter/vf.c b/video/filter/vf.c
index 251616c0c2..14ee694ac1 100644
--- a/video/filter/vf.c
+++ b/video/filter/vf.c
@@ -58,7 +58,6 @@ extern const vf_info_t vf_info_ilpack;
 extern const vf_info_t vf_info_dsize;
 extern const vf_info_t vf_info_pullup;
 extern const vf_info_t vf_info_delogo;
-extern const vf_info_t vf_info_phase;
 extern const vf_info_t vf_info_divtc;
 extern const vf_info_t vf_info_screenshot;
 extern const vf_info_t vf_info_sub;
@@ -98,7 +97,6 @@ static const vf_info_t *const filter_list[] = {
     &vf_info_dsize,
     &vf_info_pullup,
     &vf_info_delogo,
-    &vf_info_phase,
     &vf_info_divtc,
     &vf_info_sub,
     &vf_info_yadif,
diff --git a/video/filter/vf_phase.c b/video/filter/vf_phase.c
deleted file mode 100644
index 5d2179d92a..0000000000
--- a/video/filter/vf_phase.c
+++ /dev/null
@@ -1,308 +0,0 @@
-/*
- * This file is part of MPlayer.
- *
- * MPlayer is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * MPlayer is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with MPlayer; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <limits.h>
-
-#include "config.h"
-#include "common/msg.h"
-#include "options/m_option.h"
-
-#include "video/img_format.h"
-#include "video/mp_image.h"
-#include "vf.h"
-
-#include "video/memcpy_pic.h"
-
-#include "vf_lavfi.h"
-
-enum mode { PROGRESSIVE, TOP_FIRST, BOTTOM_FIRST,
-            TOP_FIRST_ANALYZE, BOTTOM_FIRST_ANALYZE,
-            ANALYZE, FULL_ANALYZE, AUTO, AUTO_ANALYZE };
-
-#define fixed_mode(p) ((p)<=BOTTOM_FIRST)
-
-struct vf_priv_s
-   {
-   int mode;
-   int verbose;
-   unsigned char *buf[3];
-   struct vf_lw_opts *lw_opts;
-   };
-
-/*
- * Copy fields from either current or buffered previous frame to the
- * output and store the current frame unmodified to the buffer.
- */
-
-static void do_plane(unsigned char *to, unsigned char *from,
-                     int w, int h, int ts, int fs,
-                     unsigned char **bufp, enum mode mode)
-   {
-   unsigned char *buf, *end;
-   int top;
-
-   if(!*bufp)
-      {
-      mode=PROGRESSIVE;
-      if(!(*bufp=malloc(h*w))) return;
-      }
-
-   for(end=to+h*ts, buf=*bufp, top=1; to<end; from+=fs, to+=ts, buf+=w, top^=1)
-      {
-      memcpy(to, mode==(top?BOTTOM_FIRST:TOP_FIRST)?buf:from, w);
-      memcpy(buf, from, w);
-      }
-   }
-
-/*
- * This macro interpolates the value of both fields at a point halfway
- * between lines and takes the squared difference. In field resolution
- * the point is a quarter pixel below a line in one field and a quarter
- * pixel above a line in other.
- *
- * (the result is actually multiplied by 25)
- */
-
-#define diff(a, as, b, bs) (t=((*a-b[bs])<<2)+a[as<<1]-b[-bs], t*t)
-
-/*
- * Find which field combination has the smallest average squared difference
- * between the fields.
- */
-
-static enum mode analyze_plane(struct vf_instance *vf,
-                               unsigned char *old, unsigned char *new,
-                               int w, int h, int os, int ns, enum mode mode,
-                               int unused, int fields)
-   {
-   double bdiff, pdiff, tdiff, scale;
-   int bdif, tdif, pdif;
-   int top, t;
-   unsigned char *end, *rend;
-
-   if(mode==AUTO)
-      mode=fields&MP_IMGFIELD_ORDERED?fields&MP_IMGFIELD_TOP_FIRST?
-         TOP_FIRST:BOTTOM_FIRST:PROGRESSIVE;
-   else if(mode==AUTO_ANALYZE)
-      mode=fields&MP_IMGFIELD_ORDERED?fields&MP_IMGFIELD_TOP_FIRST?
-         TOP_FIRST_ANALYZE:BOTTOM_FIRST_ANALYZE:FULL_ANALYZE;
-
-   if(fixed_mode(mode))
-      bdiff=pdiff=tdiff=65536.0;
-   else
-      {
-      bdiff=pdiff=tdiff=0.0;
-
-      for(end=new+(h-2)*ns, new+=ns, old+=os, top=0;
-          new<end; new+=ns-w, old+=os-w, top^=1)
-         {
-         pdif=tdif=bdif=0;
-
-         switch(mode)
-            {
-            case TOP_FIRST_ANALYZE:
-               if(top)
-                  for(rend=new+w; new<rend; new++, old++)
-                     pdif+=diff(new, ns, new, ns),
-                     tdif+=diff(new, ns, old, os);
-               else
-                  for(rend=new+w; new<rend; new++, old++)
-                     pdif+=diff(new, ns, new, ns),
-                     tdif+=diff(old, os, new, ns);
-               break;
-
-            case BOTTOM_FIRST_ANALYZE:
-               if(top)
-                  for(rend=new+w; new<rend; new++, old++)
-                     pdif+=diff(new, ns, new, ns),
-                     bdif+=diff(old, os, new, ns);
-               else
-                  for(rend=new+w; new<rend; new++, old++)
-                     pdif+=diff(new, ns, new, ns),
-                     bdif+=diff(new, ns, old, os);
-               break;
-
-            case ANALYZE:
-               if(top)
-                  for(rend=new+w; new<rend; new++, old++)
-                     tdif+=diff(new, ns, old, os),
-                     bdif+=diff(old, os, new, ns);
-               else
-                  for(rend=new+w; new<rend; new++, old++)
-                     bdif+=diff(new, ns, old, os),
-                     tdif+=diff(old, os, new, ns);
-               break;
-
-            default: /* FULL_ANALYZE */
-               if(top)
-                  for(rend=new+w; new<rend; new++, old++)
-                     pdif+=diff(new, ns, new, ns),
-                     tdif+=diff(new, ns, old, os),
-                     bdif+=diff(old, os, new, ns);
-               else
-                  for(rend=new+w; new<rend; new++, old++)
-                     pdif+=diff(new, ns, new, ns),
-                     bdif+=diff(new, ns, old, os),
-                     tdif+=diff(old, os, new, ns);
-            }
-
-         pdiff+=(double)pdif;
-         tdiff+=(double)tdif;
-         bdiff+=(double)bdif;
-         }
-
-      scale=1.0/(w*(h-3))/25.0;
-      pdiff*=scale;
-      tdiff*=scale;
-      bdiff*=scale;
-
-      if(mode==TOP_FIRST_ANALYZE)
-         bdiff=65536.0;
-      else if(mode==BOTTOM_FIRST_ANALYZE)
-         tdiff=65536.0;
-      else if(mode==ANALYZE)
-         pdiff=65536.0;
-
-      if(bdiff<pdiff && bdiff<tdiff)
-         mode=BOTTOM_FIRST;
-      else if(tdiff<pdiff && tdiff<bdiff)
-         mode=TOP_FIRST;
-      else
-         mode=PROGRESSIVE;
-      }
-
-      MP_INFO(vf, "%c", mode==BOTTOM_FIRST?'b':mode==TOP_FIRST?'t':'p');
-      if(tdiff==65536.0) MP_INFO(vf, "     N/A "); else MP_INFO(vf, " %8.2f", tdiff);
-      if(bdiff==65536.0) MP_INFO(vf, "     N/A "); else MP_INFO(vf, " %8.2f", bdiff);
-      if(pdiff==65536.0) MP_INFO(vf, "     N/A "); else MP_INFO(vf, " %8.2f", pdiff);
-      MP_INFO(vf, "        \n");
-
-   return mode;
-   }
-
-static struct mp_image *filter(struct vf_instance *vf, struct mp_image *mpi)
-   {
-   enum mode mode;
-
-   struct mp_image *dmpi = vf_alloc_out_image(vf);
-   if (!dmpi)
-       return NULL;
-   mp_image_copy_attributes(dmpi, mpi);
-
-   int pw[MP_MAX_PLANES] = {0};
-   for (int p = 0; p < mpi->num_planes; p++)
-       pw[p] = ((mpi->w * mpi->fmt.bpp[p] + 7) / 8) >> mpi->fmt.xs[p];
-
-   mode=vf->priv->mode;
-
-   if(!vf->priv->buf[0])
-      mode=PROGRESSIVE;
-   else
-      mode=analyze_plane(vf, vf->priv->buf[0], mpi->planes[0],
-                         pw[0], dmpi->h, pw[0], mpi->stride[0], mode,
-                         vf->priv->verbose, mpi->fields);
-
-   for (int p = 0; p < mpi->num_planes; p++) {
-      do_plane(dmpi->planes[p], mpi->planes[p], pw[p], dmpi->plane_h[p],
-               dmpi->stride[p], mpi->stride[p],
-               &vf->priv->buf[p], mode);
-   }
-
-   talloc_free(mpi);
-   return dmpi;
-   }
-
-static void uninit(struct vf_instance *vf)
-   {
-   if (!vf->priv)
-       return;
-   free(vf->priv->buf[0]);
-   free(vf->priv->buf[1]);
-   free(vf->priv->buf[2]);
-   }
-
-static int query_format(struct vf_instance *vf, unsigned int fmt)
-{
-    if (IMGFMT_IS_HWACCEL(fmt))
-        return 0;
-    struct mp_imgfmt_desc desc = mp_imgfmt_get_desc(fmt);
-    if (desc.num_planes > 3)
-        return 0;
-    return vf_next_query_format(vf, fmt);
-}
-
-static const char *get_lavfi_mode(int mode)
-{
-    switch (mode) {
-    case PROGRESSIVE: return "p";
-    case TOP_FIRST: return "t";
-    case BOTTOM_FIRST: return "b";
-    case TOP_FIRST_ANALYZE: return "T";
-    case BOTTOM_FIRST_ANALYZE: return "B";
-    case ANALYZE: return "u";
-    case FULL_ANALYZE: return "U";
-    case AUTO: return "a";
-    case AUTO_ANALYZE: return "A";
-    default: return "?";
-    }
-}
-
-static int vf_open(vf_instance_t *vf)
-   {
-   vf->filter = filter;
-   vf->uninit = uninit;
-   vf->query_format = query_format;
-
-    if (vf_lw_set_graph(vf, vf->priv->lw_opts, "phase", "%s",
-                        get_lavfi_mode(vf->priv->mode)) >= 0)
-    {
-        return 1;
-    }
-
-   return 1;
-   }
-
-#define OPT_BASE_STRUCT struct vf_priv_s
-const vf_info_t vf_info_phase =
-{
-   .description = "phase shift fields",
-   .name = "phase",
-   .open = vf_open,
-   .priv_size = sizeof(struct vf_priv_s),
-   .priv_defaults = &(const struct vf_priv_s){
-       .mode = AUTO_ANALYZE,
-   },
-   .options = (const struct m_option[]){
-        OPT_CHOICE("mode", mode, 0,
-                   ({"t", TOP_FIRST},
-                    {"a", AUTO},
-                    {"b", BOTTOM_FIRST},
-                    {"u", ANALYZE},
-                    {"T", TOP_FIRST_ANALYZE},
-                    {"A", AUTO_ANALYZE},
-                    {"B", BOTTOM_FIRST_ANALYZE},
-                    {"U", FULL_ANALYZE},
-                    {"p", PROGRESSIVE})),
-        OPT_FLAG("v", verbose, 0),
-        OPT_SUBSTRUCT("", lw_opts, vf_lw_conf, 0),
-        {0}
-   },
-};
diff --git a/wscript_build.py b/wscript_build.py
index 830ec95227..27b50fcca2 100644
--- a/wscript_build.py
+++ b/wscript_build.py
@@ -312,7 +312,6 @@ def build(ctx):
         ( "video/filter/vf_mirror.c" ),
         ( "video/filter/vf_noformat.c" ),
         ( "video/filter/vf_noise.c" ),
-        ( "video/filter/vf_phase.c" ),
         ( "video/filter/vf_pullup.c" ),
         ( "video/filter/vf_rotate.c" ),
         ( "video/filter/vf_scale.c" ),