2 * Copyright 2013 Sveriges Television AB http://casparcg.com/
4 * This file is part of CasparCG (www.casparcg.com).
6 * CasparCG is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
11 * CasparCG is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with CasparCG. If not, see <http://www.gnu.org/licenses/>.
19 * Author: Robert Nagy, ronag89@gmail.com
24 #include <common/memory.h>
26 #include <boost/rational.hpp>
27 #include <boost/noncopyable.hpp>
28 #include <boost/algorithm/string/case_conv.hpp>
36 namespace caspar { namespace ffmpeg {
38 static std::wstring append_filter(const std::wstring& filters, const std::wstring& filter)
40 return filters + (filters.empty() ? L"" : L",") + filter;
43 class filter : boost::noncopyable
49 boost::rational<int> in_time_base,
50 boost::rational<int> in_frame_rate,
51 boost::rational<int> in_sample_aspect_ratio,
52 AVPixelFormat in_pix_fmt,
53 std::vector<AVPixelFormat> out_pix_fmts,
54 const std::string& filtergraph);
55 filter(filter&& other);
56 filter& operator=(filter&& other);
58 void push(const std::shared_ptr<AVFrame>& frame);
59 std::shared_ptr<AVFrame> poll();
60 std::vector<spl::shared_ptr<AVFrame>> poll_all();
62 std::wstring filter_str() const;
64 static bool is_double_rate(const std::wstring& filters)
66 if(boost::to_upper_copy(filters).find(L"YADIF=1") != std::string::npos)
69 if(boost::to_upper_copy(filters).find(L"YADIF=3") != std::string::npos)
75 static bool is_deinterlacing(const std::wstring& filters)
77 if(boost::to_upper_copy(filters).find(L"YADIF") != std::string::npos)
82 static int delay(const std::wstring& filters)
84 return is_double_rate(filters) ? 1 : 1;
89 return delay(filter_str());
92 bool is_double_rate() const
94 return is_double_rate(filter_str());
97 bool is_deinterlacing() const
99 return is_deinterlacing(filter_str());
102 struct implementation;
103 spl::shared_ptr<implementation> impl_;