/*
Copyright (C) 2006-2010 Paul Davis
-
+
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
-
+
This program 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 this program; if not, write to the Free Software Foundation, Inc.,
675 Mass Ave, Cambridge, MA 02139, USA.
#ifndef __timecode_time_h__
#define __timecode_time_h__
+#include <cmath>
#include <ostream>
#include <inttypes.h>
+#include "timecode/visibility.h"
+
namespace Timecode {
enum Wrap {
HOURS
};
-struct Time {
- bool negative;
- uint32_t hours;
- uint32_t minutes;
- uint32_t seconds;
- uint32_t frames; ///< Timecode frames (not audio samples)
- uint32_t subframes; ///< Typically unused
- float rate; ///< Frame rate of this Time
- static float default_rate; ///< Rate to use for default constructor
- bool drop; ///< Whether this Time uses dropframe Timecode
-
- Time (float a_rate = default_rate) {
+enum TimecodeFormat {
+ timecode_23976,
+ timecode_24,
+ timecode_24976,
+ timecode_25,
+ timecode_2997,
+ timecode_2997drop,
+ timecode_2997000,
+ timecode_2997000drop,
+ timecode_30,
+ timecode_30drop,
+ timecode_5994,
+ timecode_60
+};
+
+struct LIBTIMECODE_API Time {
+ bool negative;
+ uint32_t hours;
+ uint32_t minutes;
+ uint32_t seconds;
+ uint32_t frames; ///< Timecode frames (not audio samples)
+ uint32_t subframes; ///< Typically unused
+ double rate; ///< Frame rate of this Time
+ static double default_rate; ///< Rate to use for default constructor
+ bool drop; ///< Whether this Time uses dropframe Timecode
+
+ Time (double a_rate = default_rate) {
negative = false;
hours = 0;
minutes = 0;
frames = 0;
subframes = 0;
rate = a_rate;
+ drop = (lrintf(100.f * (float)a_rate) == (long)2997);
}
-
+
bool operator== (const Time& other) const {
return negative == other.negative && hours == other.hours &&
minutes == other.minutes && seconds == other.seconds &&
};
-Wrap increment (Time& timecode, uint32_t);
-Wrap decrement (Time& timecode, uint32_t);
-Wrap increment_subframes (Time& timecode, uint32_t);
-Wrap decrement_subframes (Time& timecode, uint32_t);
-Wrap increment_seconds (Time& timecode, uint32_t);
-Wrap increment_minutes (Time& timecode, uint32_t);
-Wrap increment_hours (Time& timecode, uint32_t);
-void frames_floor (Time& timecode);
-void seconds_floor (Time& timecode);
-void minutes_floor (Time& timecode);
-void hours_floor (Time& timecode);
+Wrap LIBTIMECODE_API increment (Time& timecode, uint32_t);
+Wrap LIBTIMECODE_API decrement (Time& timecode, uint32_t);
+Wrap LIBTIMECODE_API increment_subframes (Time& timecode, uint32_t);
+Wrap LIBTIMECODE_API decrement_subframes (Time& timecode, uint32_t);
+Wrap LIBTIMECODE_API increment_seconds (Time& timecode, uint32_t);
+Wrap LIBTIMECODE_API increment_minutes (Time& timecode, uint32_t);
+Wrap LIBTIMECODE_API increment_hours (Time& timecode, uint32_t);
+void LIBTIMECODE_API frames_floor (Time& timecode);
+void LIBTIMECODE_API seconds_floor (Time& timecode);
+void LIBTIMECODE_API minutes_floor (Time& timecode);
+void LIBTIMECODE_API hours_floor (Time& timecode);
+
+double LIBTIMECODE_API timecode_to_frames_per_second(TimecodeFormat const t);
+bool LIBTIMECODE_API timecode_has_drop_frames(TimecodeFormat const t);
+
+std::string LIBTIMECODE_API timecode_format_name (TimecodeFormat const t);
+
+std::string LIBTIMECODE_API timecode_format_time (Timecode::Time const timecode);
+
+std::string LIBTIMECODE_API timecode_format_sampletime (
+ int64_t sample,
+ double sample_frame_rate,
+ double timecode_frames_per_second, bool timecode_drop_frames
+ );
+
+bool LIBTIMECODE_API parse_timecode_format(std::string tc, Timecode::Time &TC);
+
+void LIBTIMECODE_API timecode_to_sample(
+ Timecode::Time& timecode, int64_t& sample,
+ bool use_offset, bool use_subframes,
+ /* Note - framerate info is taken from Timecode::Time& */
+ double sample_frame_rate /**< may include pull up/down */,
+ uint32_t subframes_per_frame /**< must not be 0 if use_subframes==true */,
+ /* optional offset - can be improved: function pointer to lazily query this*/
+ bool offset_is_negative, int64_t offset_samples
+ );
+
+void LIBTIMECODE_API sample_to_timecode (
+ int64_t sample, Timecode::Time& timecode,
+ bool use_offset, bool use_subframes,
+ /* framerate info */
+ double timecode_frames_per_second,
+ bool timecode_drop_frames,
+ double sample_frame_rate/**< can include pull up/down */,
+ uint32_t subframes_per_frame,
+ /* optional offset - can be improved: function pointer to lazily query this*/
+ bool offset_is_negative, int64_t offset_samples
+ );
+
} // namespace Timecode
-std::ostream& operator<< (std::ostream& ostr, const Timecode::Time& t);
+extern LIBTIMECODE_API std::ostream& operator<< (std::ostream& ostr, const Timecode::Time& t);
#endif // __timecode_time_h__
projects / ardour.git / blobdiff