2 Copyright (C) 2006-2010 Paul Davis
4 This program is free software; you can redistribute it and/or modify it
5 under the terms of the GNU Lesser General Public License as published
6 by the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful, but WITHOUT
10 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 You should have received a copy of the GNU General Public License along
15 with this program; if not, write to the Free Software Foundation, Inc.,
16 675 Mass Ave, Cambridge, MA 02139, USA.
19 #ifndef __timecode_time_h__
20 #define __timecode_time_h__
53 uint32_t frames; ///< Timecode frames (not audio samples)
54 uint32_t subframes; ///< Typically unused
55 float rate; ///< Frame rate of this Time
56 static float default_rate; ///< Rate to use for default constructor
57 bool drop; ///< Whether this Time uses dropframe Timecode
59 Time (float a_rate = default_rate) {
69 bool operator== (const Time& other) const {
70 return negative == other.negative && hours == other.hours &&
71 minutes == other.minutes && seconds == other.seconds &&
72 frames == other.frames && subframes == other.subframes &&
73 rate == other.rate && drop == other.drop;
76 std::ostream& print (std::ostream& ostr) const {
80 ostr << hours << ':' << minutes << ':' << seconds << ':'
81 << frames << '.' << subframes
82 << " @" << rate << (drop ? " drop" : " nondrop");
88 Wrap increment (Time& timecode, uint32_t);
89 Wrap decrement (Time& timecode, uint32_t);
90 Wrap increment_subframes (Time& timecode, uint32_t);
91 Wrap decrement_subframes (Time& timecode, uint32_t);
92 Wrap increment_seconds (Time& timecode, uint32_t);
93 Wrap increment_minutes (Time& timecode, uint32_t);
94 Wrap increment_hours (Time& timecode, uint32_t);
95 void frames_floor (Time& timecode);
96 void seconds_floor (Time& timecode);
97 void minutes_floor (Time& timecode);
98 void hours_floor (Time& timecode);
100 float timecode_to_frames_per_second(TimecodeFormat const t);
101 bool timecode_has_drop_frames(TimecodeFormat const t);
103 std::string timecode_format_name (TimecodeFormat const t);
105 std::string timecode_format_time (Timecode::Time& timecode);
107 std::string timecode_format_sampletime (
109 double sample_frame_rate,
110 double timecode_frames_per_second, bool timecode_drop_frames
115 Timecode::Time& timecode, int64_t& sample,
116 bool use_offset, bool use_subframes,
117 /* Note - framerate info is taken from Timecode::Time& */
118 double sample_frame_rate /**< may include pull up/down */,
119 uint32_t subframes_per_frame /**< must not be 0 if use_subframes==true */,
120 /* optional offset - can be improved: function pointer to lazily query this*/
121 bool offset_is_negative, int64_t offset_samples
124 void sample_to_timecode (
125 int64_t sample, Timecode::Time& timecode,
126 bool use_offset, bool use_subframes,
128 double timecode_frames_per_second,
129 bool timecode_drop_frames,
130 double sample_frame_rate/**< can include pull up/down */,
131 uint32_t subframes_per_frame,
132 /* optional offset - can be improved: function pointer to lazily query this*/
133 bool offset_is_negative, int64_t offset_samples
137 } // namespace Timecode
139 std::ostream& operator<< (std::ostream& ostr, const Timecode::Time& t);
141 #endif // __timecode_time_h__