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/* Copyright (C) 2006 Paul Davis
This program 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.
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.,
51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef __ardour_smpte_h__
#define __ardour_smpte_h__
#include <inttypes.h>
namespace SMPTE {
enum Wrap {
NONE = 0,
FRAMES,
SECONDS,
MINUTES,
HOURS
};
/** SMPTE frame rate (in frames per second).
*
* This should be eliminated in favour of a float to support arbitrary rates.
*/
enum FPS {
MTC_24_FPS = 0,
MTC_25_FPS = 1,
MTC_30_FPS_DROP = 2,
MTC_30_FPS = 3
};
struct Time {
bool negative;
uint32_t hours;
uint32_t minutes;
uint32_t seconds;
uint32_t frames; ///< SMPTE frames (not audio samples)
uint32_t subframes; ///< Typically unused
FPS rate; ///< Frame rate of this Time
static FPS default_rate; ///< Rate to use for default constructor
Time(FPS a_rate = default_rate) {
negative = false;
hours = 0;
minutes = 0;
seconds = 0;
frames = 0;
subframes = 0;
rate = a_rate;
}
};
Wrap increment( Time& smpte );
Wrap decrement( Time& smpte );
Wrap increment_subframes( Time& smpte );
Wrap decrement_subframes( Time& smpte );
Wrap increment_seconds( Time& smpte );
Wrap increment_minutes( Time& smpte );
Wrap increment_hours( Time& smpte );
void frames_floor( Time& smpte );
void seconds_floor( Time& smpte );
void minutes_floor( Time& smpte );
void hours_floor( Time& smpte );
} // namespace SMPTE
#endif // __ardour_smpte_h__
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