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/*
Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
This file is part of DCP-o-matic.
DCP-o-matic 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.
DCP-o-matic 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 DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file src/filter.cc
* @brief A class to describe one of FFmpeg's video or audio filters.
*/
#include "filter.h"
extern "C" {
#include <libavfilter/avfilter.h>
}
#include <boost/foreach.hpp>
#include <iostream>
#include "i18n.h"
using namespace std;
vector<Filter const *> Filter::_filters;
/** @param i Our id.
* @param n User-visible name.
* @param c User-visible category.
* @param f String for a FFmpeg filter descriptor.
*/
Filter::Filter (string i, string n, string c, string f)
: _id (i)
, _name (n)
, _category (c)
, _ffmpeg (f)
{
}
/** @return All available filters */
vector<Filter const *>
Filter::all ()
{
return _filters;
}
/** Set up the static _filters vector; must be called before from_*
* methods are used.
*/
void
Filter::setup_filters ()
{
/* Note: "none" is a magic id name, so don't use it here */
maybe_add (N_("vflip"), _("Vertical flip"), _("Orientation"), N_("vflip"));
maybe_add (N_("hflip"), _("Horizontal flip"), _("Orientation"), N_("hflip"));
maybe_add (N_("90clock"), _("Rotate 90 degrees clockwise"), _("Orientation"), N_("transpose=dir=clock"));
maybe_add (N_("90anticlock"), _("Rotate 90 degrees anti-clockwise"), _("Orientation"), N_("transpose=dir=cclock"));
maybe_add (N_("mcdeint"), _("Motion compensating deinterlacer"), _("De-interlacing"), N_("mcdeint"));
maybe_add (N_("kerndeint"), _("Kernel deinterlacer"), _("De-interlacing"), N_("kerndeint"));
maybe_add (N_("yadif"), _("Yet Another Deinterlacing Filter"), _("De-interlacing"), N_("yadif"));
maybe_add (N_("bwdif"), _("Bob Weaver Deinterlacing Filter"), _("De-interlacing"), N_("bwdif"));
maybe_add (N_("weave"), _("Weave filter"), _("De-interlacing"), N_("weave"));
maybe_add (N_("gradfun"), _("Gradient debander"), _("Misc"), N_("gradfun"));
maybe_add (N_("unsharp"), _("Unsharp mask and Gaussian blur"), _("Misc"), N_("unsharp"));
maybe_add (N_("denoise3d"), _("3D denoiser"), _("Noise reduction"), N_("denoise3d"));
maybe_add (N_("hqdn3d"), _("High quality 3D denoiser"), _("Noise reduction"), N_("hqdn3d"));
maybe_add (N_("telecine"), _("Telecine filter"), _("Misc"), N_("telecine"));
maybe_add (N_("ow"), _("Overcomplete wavelet denoiser"), _("Noise reduction"), N_("mp=ow"));
}
void
Filter::maybe_add (string i, string n, string c, string f)
{
string check_name = f;
size_t end = check_name.find("=");
if (end != string::npos) {
check_name = check_name.substr (0, end);
}
if (avfilter_get_by_name (check_name.c_str())) {
_filters.push_back (new Filter (i, n, c, f));
}
}
/** @param filters Set of filters.
* @return String to pass to FFmpeg for the video filters.
*/
string
Filter::ffmpeg_string (vector<Filter const *> const & filters)
{
string ff;
BOOST_FOREACH (Filter const * i, filters) {
if (!ff.empty ()) {
ff += N_(",");
}
ff += i->ffmpeg ();
}
return ff;
}
/** @param d Our id.
* @return Corresponding Filter, or 0.
*/
Filter const *
Filter::from_id (string d)
{
vector<Filter const *>::iterator i = _filters.begin ();
while (i != _filters.end() && (*i)->id() != d) {
++i;
}
if (i == _filters.end ()) {
return 0;
}
return *i;
}
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