120 lines
3.2 KiB
C
120 lines
3.2 KiB
C
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/*****************************************************************
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File: TimeCode.h
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Description: Time code handling functions and class
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Copyright 1998-, Be Incorporated. All Rights Reserved.
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*****************************************************************/
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#if !defined(_TIME_CODE_H)
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#define _TIME_CODE_H
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#include <SupportDefs.h>
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/* Time code is always in the form HH:MM:SS:FF, it's the definition of FF that varies */
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enum timecode_type {
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B_TIMECODE_DEFAULT,
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B_TIMECODE_100,
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B_TIMECODE_75, /* CD */
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B_TIMECODE_30, /* MIDI */
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B_TIMECODE_30_DROP_2, /* NTSC */
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B_TIMECODE_30_DROP_4, /* Brazil */
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B_TIMECODE_25, /* PAL */
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B_TIMECODE_24, /* Film */
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B_TIMECODE_18 /* Super8 */
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};
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struct timecode_info {
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timecode_type type;
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int drop_frames;
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int every_nth;
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int except_nth;
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int fps_div;
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char name[32]; /* for popup menu etc */
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char format[32]; /* for sprintf(fmt, h, m, s, f) */
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char _reserved_[64];
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};
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_IMPEXP_MEDIA status_t us_to_timecode(bigtime_t micros, int * hours, int * minutes, int * seconds, int * frames, const timecode_info * code = NULL);
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_IMPEXP_MEDIA status_t timecode_to_us(int hours, int minutes, int seconds, int frames, bigtime_t * micros, const timecode_info * code = NULL);
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_IMPEXP_MEDIA status_t frames_to_timecode(int32 l_frames, int * hours, int * minutes, int * seconds, int * frames, const timecode_info * code = NULL);
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_IMPEXP_MEDIA status_t timecode_to_frames(int hours, int minutes, int seconds, int frames, int32 * l_frames, const timecode_info * code = NULL);
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_IMPEXP_MEDIA status_t get_timecode_description(timecode_type type, timecode_info * out_timecode);
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_IMPEXP_MEDIA status_t count_timecodes();
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/* we may want a set_default_timecode, too -- but that's bad from a thread standpoint */
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class BTimeCode {
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public:
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BTimeCode();
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BTimeCode(
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bigtime_t us,
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timecode_type type = B_TIMECODE_DEFAULT);
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BTimeCode(
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const BTimeCode & clone);
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BTimeCode(
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int hours,
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int minutes,
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int seconds,
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int frames,
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timecode_type type = B_TIMECODE_DEFAULT);
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~BTimeCode();
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void SetData(
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int hours,
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int minutes,
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int seconds,
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int frames);
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status_t SetType(
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timecode_type type);
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void SetMicroseconds(
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bigtime_t us);
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void SetLinearFrames(
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int32 linear_frames);
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BTimeCode & operator=(
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const BTimeCode & clone);
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bool operator==(
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const BTimeCode & other) const;
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bool operator<(
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const BTimeCode & other) const;
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BTimeCode & operator+=(
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const BTimeCode & other);
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BTimeCode & operator-=(
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const BTimeCode & other);
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BTimeCode operator+(
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const BTimeCode & other) const;
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BTimeCode operator-(
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const BTimeCode & other) const;
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int Hours() const;
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int Minutes() const;
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int Seconds() const;
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int Frames() const;
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timecode_type Type() const;
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void GetData(
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int * out_hours,
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int * out_minutes,
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int * out_seconds,
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int * out_frames,
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timecode_type * out_type = NULL) const;
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bigtime_t Microseconds() const;
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int32 LinearFrames() const;
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void GetString(
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char * str) const; /* at least 24 bytes */
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private:
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int m_hours;
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int m_minutes;
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int m_seconds;
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int m_frames;
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timecode_info m_info;
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};
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#endif /* _TIME_CODE_H */
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