2 * Copyright (c) 2011 Sveriges Television AB <info@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 "video_format.h"
26 #include <boost/algorithm/string.hpp>
28 namespace caspar { namespace core {
30 const std::vector<video_format_desc> format_descs = {
31 { video_format::pal, 720, 576, 1024, 576, field_mode::upper, 25000, 1000, L"PAL", { 1920 } },
32 { video_format::ntsc, 720, 486, 720, 540, field_mode::lower, 30000, 1001, L"NTSC", { 1602, 1601, 1602, 1601, 1602 } },
33 { video_format::x576p2500, 720, 576, 1024, 576, field_mode::progressive, 25000, 1000, L"576p2500", { 1920 } },
34 { video_format::x720p2398, 1280, 720, 1280, 720, field_mode::progressive, 24000, 1001, L"720p2398", { 2002 } },
35 { video_format::x720p2400, 1280, 720, 1280, 720, field_mode::progressive, 24000, 1000, L"720p2400", { 2000 } },
36 { video_format::x720p2500, 1280, 720, 1280, 720, field_mode::progressive, 25000, 1000, L"720p2500", { 1920 } },
37 { video_format::x720p5000, 1280, 720, 1280, 720, field_mode::progressive, 50000, 1000, L"720p5000", { 960 } },
38 { video_format::x720p2997, 1280, 720, 1280, 720, field_mode::progressive, 30000, 1001, L"720p2997", { 1602, 1601, 1602, 1601, 1602 } },
39 { video_format::x720p5994, 1280, 720, 1280, 720, field_mode::progressive, 60000, 1001, L"720p5994", { 801, 800, 801, 801, 801 } },
40 { video_format::x720p3000, 1280, 720, 1280, 720, field_mode::progressive, 30000, 1000, L"720p3000", { 1600 } },
41 { video_format::x720p6000, 1280, 720, 1280, 720, field_mode::progressive, 60000, 1000, L"720p6000", { 800 } },
42 { video_format::x1080p2398, 1920, 1080, 1920, 1080, field_mode::progressive, 24000, 1001, L"1080p2398", { 2002 } },
43 { video_format::x1080p2400, 1920, 1080, 1920, 1080, field_mode::progressive, 24000, 1000, L"1080p2400", { 2000 } },
44 { video_format::x1080i5000, 1920, 1080, 1920, 1080, field_mode::upper, 25000, 1000, L"1080i5000", { 1920 } },
45 { video_format::x1080i5994, 1920, 1080, 1920, 1080, field_mode::upper, 30000, 1001, L"1080i5994", { 1602, 1601, 1602, 1601, 1602 } },
46 { video_format::x1080i6000, 1920, 1080, 1920, 1080, field_mode::upper, 30000, 1000, L"1080i6000", { 1600 } },
47 { video_format::x1080p2500, 1920, 1080, 1920, 1080, field_mode::progressive, 25000, 1000, L"1080p2500", { 1920 } },
48 { video_format::x1080p2997, 1920, 1080, 1920, 1080, field_mode::progressive, 30000, 1001, L"1080p2997", { 1602, 1601, 1602, 1601, 1602 } },
49 { video_format::x1080p3000, 1920, 1080, 1920, 1080, field_mode::progressive, 30000, 1000, L"1080p3000", { 1600 } },
50 { video_format::x1080p5000, 1920, 1080, 1920, 1080, field_mode::progressive, 50000, 1000, L"1080p5000", { 960 } },
51 { video_format::x1080p5994, 1920, 1080, 1920, 1080, field_mode::progressive, 60000, 1001, L"1080p5994", { 801, 800, 801, 801, 801 } },
52 { video_format::x1080p6000, 1920, 1080, 1920, 1080, field_mode::progressive, 60000, 1000, L"1080p6000", { 800 } },
53 { video_format::x1556p2398, 2048, 1556, 2048, 1556, field_mode::progressive, 24000, 1001, L"1556p2398", { 2002 } },
54 { video_format::x1556p2400, 2048, 1556, 2048, 1556, field_mode::progressive, 24000, 1000, L"1556p2400", { 2000 } },
55 { video_format::x1556p2500, 2048, 1556, 2048, 1556, field_mode::progressive, 25000, 1000, L"1556p2500", { 1920 } },
56 { video_format::dci1080p2398, 2048, 1080, 2048, 1080, field_mode::progressive, 24000, 1001, L"dci1080p2398", { 2002 } },
57 { video_format::dci1080p2400, 2048, 1080, 2048, 1080, field_mode::progressive, 24000, 1000, L"dci1080p2400", { 2000 } },
58 { video_format::dci1080p2500, 2048, 1080, 2048, 1080, field_mode::progressive, 25000, 1000, L"dci1080p2500", { 1920 } },
59 { video_format::x2160p2398, 3840, 2160, 3840, 2160, field_mode::progressive, 24000, 1001, L"2160p2398", { 2002 } },
60 { video_format::x2160p2400, 3840, 2160, 3840, 2160, field_mode::progressive, 24000, 1000, L"2160p2400", { 2000 } },
61 { video_format::x2160p2500, 3840, 2160, 3840, 2160, field_mode::progressive, 25000, 1000, L"2160p2500", { 1920 } },
62 { video_format::x2160p2997, 3840, 2160, 3840, 2160, field_mode::progressive, 30000, 1001, L"2160p2997", { 1602, 1601, 1602, 1601, 1602 } },
63 { video_format::x2160p3000, 3840, 2160, 3840, 2160, field_mode::progressive, 30000, 1000, L"2160p3000", { 1600 } },
64 { video_format::x2160p5000, 3840, 2160, 3840, 2160, field_mode::progressive, 50000, 1000, L"2160p5000", { 960 } },
65 { video_format::x2160p5994, 3840, 2160, 3840, 2160, field_mode::progressive, 60000, 1001, L"2160p5994", { 801, 800, 801, 801, 801 } },
66 { video_format::x2160p6000, 3840, 2160, 3840, 2160, field_mode::progressive, 60000, 1000, L"2160p6000", { 800 } },
67 { video_format::dci2160p2398, 4096, 2160, 4096, 2160, field_mode::progressive, 24000, 1001, L"dci2160p2398", { 2002 } },
68 { video_format::dci2160p2400, 4096, 2160, 4096, 2160, field_mode::progressive, 24000, 1000, L"dci2160p2400", { 2000 } },
69 { video_format::dci2160p2500, 4096, 2160, 4096, 2160, field_mode::progressive, 25000, 1000, L"dci2160p2500", { 1920 } },
70 { video_format::invalid, 0, 0, 0, 0, field_mode::progressive, 1, 1, L"invalid", { 1 } }
73 video_format_desc::video_format_desc(
79 core::field_mode field_mode,
82 const std::wstring& name,
83 const std::vector<int>& audio_cadence)
87 , square_width(square_width)
88 , square_height(square_height)
89 , field_mode(field_mode)
90 , fps(static_cast<double>(time_scale) / static_cast<double>(duration))
91 , framerate(time_scale, duration)
92 , time_scale(time_scale)
94 , field_count(field_mode == core::field_mode::progressive ? 1 : 2)
95 , size(width*height*4)
97 , audio_sample_rate(48000)
98 , audio_cadence(audio_cadence)
102 video_format_desc::video_format_desc(video_format format)
103 : format(video_format::invalid)
104 , field_mode(core::field_mode::empty)
106 *this = format_descs.at(static_cast<int>(format));
109 video_format_desc::video_format_desc(const std::wstring& name)
110 : format(video_format::invalid)
111 , field_mode(core::field_mode::empty)
113 *this = video_format_desc(video_format::invalid);
114 for(auto it = std::begin(format_descs); it != std::end(format_descs)-1; ++it)
116 if(boost::iequals(it->name, name))
124 bool operator==(const video_format_desc& lhs, const video_format_desc& rhs)
126 return lhs.format == rhs.format;
129 bool operator!=(const video_format_desc& lhs, const video_format_desc& rhs)
131 return !(lhs == rhs);
134 std::wostream& operator<<(std::wostream& out, const video_format_desc& format_desc)
136 out << format_desc.name.c_str();
140 std::vector<int> find_audio_cadence(const boost::rational<int>& framerate, bool log_quiet)
142 static std::map<boost::rational<int>, std::vector<int>> CADENCES_BY_FRAMERATE = []
144 std::map<boost::rational<int>, std::vector<int>> result;
146 for (core::video_format format : enum_constants<core::video_format>())
148 core::video_format_desc desc(format);
149 boost::rational<int> format_rate(desc.time_scale, desc.duration);
151 result.insert(std::make_pair(format_rate, desc.audio_cadence));
157 auto exact_match = CADENCES_BY_FRAMERATE.find(framerate);
159 if (exact_match != CADENCES_BY_FRAMERATE.end())
160 return exact_match->second;
162 boost::rational<int> closest_framerate_diff = std::numeric_limits<int>::max();
163 boost::rational<int> closest_framerate = 0;
165 for (auto format_framerate : CADENCES_BY_FRAMERATE | boost::adaptors::map_keys)
167 auto diff = boost::abs(framerate - format_framerate);
169 if (diff < closest_framerate_diff)
171 closest_framerate_diff = diff;
172 closest_framerate = format_framerate;
177 CASPAR_LOG(debug) << "No exact audio cadence match found for framerate " << to_string(framerate)
178 << "\nClosest match is " << to_string(closest_framerate)
179 << "\nwhich is a " << to_string(closest_framerate_diff) << " difference.";
181 CASPAR_LOG(warning) << "No exact audio cadence match found for framerate " << to_string(framerate)
182 << "\nClosest match is " << to_string(closest_framerate)
183 << "\nwhich is a " << to_string(closest_framerate_diff) << " difference.";
185 return CADENCES_BY_FRAMERATE[closest_framerate];