diff options
author | David Robillard <d@drobilla.net> | 2006-06-15 21:54:26 +0000 |
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committer | David Robillard <d@drobilla.net> | 2006-06-15 21:54:26 +0000 |
commit | 6313751f753c4e85116b0fcdaaf21e4d8369b4af (patch) | |
tree | fde36406fa61cc45c18571e6e062a7d23e5f4819 /libs/ardour/session_time.cc | |
parent | 4ef0bd23109d0a05a46f71e90676a58642dfabc5 (diff) |
Moved SMPTE type/functions into SMPTE namespace;
LGPL'd SMPTE code and moved in to libardour_cp;
Juggled control_protocol dir layout to be the same as other libs;
git-svn-id: svn://localhost/ardour2/trunk@610 d708f5d6-7413-0410-9779-e7cbd77b26cf
Diffstat (limited to 'libs/ardour/session_time.cc')
-rw-r--r-- | libs/ardour/session_time.cc | 382 |
1 files changed, 7 insertions, 375 deletions
diff --git a/libs/ardour/session_time.cc b/libs/ardour/session_time.cc index a272f55737..504492aeab 100644 --- a/libs/ardour/session_time.cc +++ b/libs/ardour/session_time.cc @@ -109,377 +109,9 @@ Session::set_smpte_offset_negative (bool neg) SMPTEOffsetChanged (); /* EMIT SIGNAL */ } -#define SMPTE_IS_AROUND_ZERO( sm ) (!(sm).frames && !(sm).seconds && !(sm).minutes && !(sm).hours) -#define SMPTE_IS_ZERO( sm ) (!(sm).frames && !(sm).seconds && !(sm).minutes && !(sm).hours && !(sm.subframes)) - -// Increment by exactly one frame (keep subframes value) -// Return true if seconds wrap -smpte_wrap_t -Session::smpte_increment( SMPTE_Time& smpte ) const -{ - smpte_wrap_t wrap = smpte_wrap_none; - - if (smpte.negative) { - if (SMPTE_IS_AROUND_ZERO(smpte) && smpte.subframes) { - // We have a zero transition involving only subframes - smpte.subframes = 80 - smpte.subframes; - smpte.negative = false; - return smpte_wrap_seconds; - } - - smpte.negative = false; - wrap = smpte_decrement( smpte ); - if (!SMPTE_IS_ZERO( smpte )) { - smpte.negative = true; - } - return wrap; - } - - switch (mtc_smpte_bits >> 5) { - case MIDI::MTC_24_FPS: - if (smpte.frames == 23) { - smpte.frames = 0; - wrap = smpte_wrap_seconds; - } - break; - case MIDI::MTC_25_FPS: - if (smpte.frames == 24) { - smpte.frames = 0; - wrap = smpte_wrap_seconds; - } - break; - case MIDI::MTC_30_FPS_DROP: - if (smpte.frames == 29) { - if ( ((smpte.minutes + 1) % 10) && (smpte.seconds == 59) ) { - smpte.frames = 2; - } - else { - smpte.frames = 0; - } - wrap = smpte_wrap_seconds; - } - break; - case MIDI::MTC_30_FPS: - if (smpte.frames == 29) { - smpte.frames = 0; - wrap = smpte_wrap_seconds; - } - break; - } - - if (wrap == smpte_wrap_seconds) { - if (smpte.seconds == 59) { - smpte.seconds = 0; - wrap = smpte_wrap_minutes; - if (smpte.minutes == 59) { - smpte.minutes = 0; - wrap = smpte_wrap_hours; - smpte.hours++; - } else { - smpte.minutes++; - } - } else { - smpte.seconds++; - } - } else { - smpte.frames++; - } - - return wrap; -} - -// Decrement by exactly one frame (keep subframes value) -smpte_wrap_t -Session::smpte_decrement( SMPTE_Time& smpte ) const -{ - smpte_wrap_t wrap = smpte_wrap_none; - - - if (smpte.negative || SMPTE_IS_ZERO(smpte)) { - smpte.negative = false; - wrap = smpte_increment( smpte ); - smpte.negative = true; - return wrap; - } else if (SMPTE_IS_AROUND_ZERO(smpte) && smpte.subframes) { - // We have a zero transition involving only subframes - smpte.subframes = 80 - smpte.subframes; - smpte.negative = true; - return smpte_wrap_seconds; - } - - switch (mtc_smpte_bits >> 5) { - case MIDI::MTC_24_FPS: - if (smpte.frames == 0) { - smpte.frames = 23; - wrap = smpte_wrap_seconds; - } - break; - case MIDI::MTC_25_FPS: - if (smpte.frames == 0) { - smpte.frames = 24; - wrap = smpte_wrap_seconds; - } - break; - case MIDI::MTC_30_FPS_DROP: - if ((smpte.minutes % 10) && (smpte.seconds == 0)) { - if (smpte.frames <= 2) { - smpte.frames = 29; - wrap = smpte_wrap_seconds; - } - } else if (smpte.frames == 0) { - smpte.frames = 29; - wrap = smpte_wrap_seconds; - } - break; - case MIDI::MTC_30_FPS: - if (smpte.frames == 0) { - smpte.frames = 29; - wrap = smpte_wrap_seconds; - } - break; - } - - if (wrap == smpte_wrap_seconds) { - if (smpte.seconds == 0) { - smpte.seconds = 59; - wrap = smpte_wrap_minutes; - if (smpte.minutes == 0) { - smpte.minutes = 59; - wrap = smpte_wrap_hours; - smpte.hours--; - } - else { - smpte.minutes--; - } - } else { - smpte.seconds--; - } - } else { - smpte.frames--; - } - - if (SMPTE_IS_ZERO( smpte )) { - smpte.negative = false; - } - - return wrap; -} - -// Go to lowest absolute subframe value in this frame (set to 0 :-) -void -Session::smpte_frames_floor( SMPTE_Time& smpte ) const -{ - smpte.subframes = 0; - if (SMPTE_IS_ZERO(smpte)) { - smpte.negative = false; - } -} - -// Increment by one subframe -smpte_wrap_t -Session::smpte_increment_subframes( SMPTE_Time& smpte ) const -{ - smpte_wrap_t wrap = smpte_wrap_none; - - if (smpte.negative) { - smpte.negative = false; - wrap = smpte_decrement_subframes( smpte ); - if (!SMPTE_IS_ZERO(smpte)) { - smpte.negative = true; - } - return wrap; - } - - smpte.subframes++; - if (smpte.subframes >= 80) { - smpte.subframes = 0; - smpte_increment( smpte ); - return smpte_wrap_frames; - } - return smpte_wrap_none; -} - - -// Decrement by one subframe -smpte_wrap_t -Session::smpte_decrement_subframes( SMPTE_Time& smpte ) const -{ - smpte_wrap_t wrap = smpte_wrap_none; - - if (smpte.negative) { - smpte.negative = false; - wrap = smpte_increment_subframes( smpte ); - smpte.negative = true; - return wrap; - } - - if (smpte.subframes <= 0) { - smpte.subframes = 0; - if (SMPTE_IS_ZERO(smpte)) { - smpte.negative = true; - smpte.subframes = 1; - return smpte_wrap_frames; - } else { - smpte_decrement( smpte ); - smpte.subframes = 79; - return smpte_wrap_frames; - } - } else { - smpte.subframes--; - if (SMPTE_IS_ZERO(smpte)) { - smpte.negative = false; - } - return smpte_wrap_none; - } -} - - -// Go to next whole second (frames == 0 or frames == 2) -smpte_wrap_t -Session::smpte_increment_seconds( SMPTE_Time& smpte ) const -{ - smpte_wrap_t wrap = smpte_wrap_none; - - // Clear subframes - smpte_frames_floor( smpte ); - - if (smpte.negative) { - // Wrap second if on second boundary - wrap = smpte_increment(smpte); - // Go to lowest absolute frame value - smpte_seconds_floor( smpte ); - if (SMPTE_IS_ZERO(smpte)) { - smpte.negative = false; - } - } else { - // Go to highest possible frame in this second - switch (mtc_smpte_bits >> 5) { - case MIDI::MTC_24_FPS: - smpte.frames = 23; - break; - case MIDI::MTC_25_FPS: - smpte.frames = 24; - break; - case MIDI::MTC_30_FPS_DROP: - case MIDI::MTC_30_FPS: - smpte.frames = 29; - break; - } - - // Increment by one frame - wrap = smpte_increment( smpte ); - } - - return wrap; -} - -// Go to lowest (absolute) frame value in this second -// Doesn't care about positive/negative -void -Session::smpte_seconds_floor( SMPTE_Time& smpte ) const -{ - // Clear subframes - smpte_frames_floor( smpte ); - - // Go to lowest possible frame in this second - switch (mtc_smpte_bits >> 5) { - case MIDI::MTC_24_FPS: - case MIDI::MTC_25_FPS: - case MIDI::MTC_30_FPS: - smpte.frames = 0; - break; - case MIDI::MTC_30_FPS_DROP: - if ((smpte.minutes % 10) && (smpte.seconds == 0)) { - smpte.frames = 2; - } else { - smpte.frames = 0; - } - break; - } - - if (SMPTE_IS_ZERO(smpte)) { - smpte.negative = false; - } -} - - -// Go to next whole minute (seconds == 0, frames == 0 or frames == 2) -smpte_wrap_t -Session::smpte_increment_minutes( SMPTE_Time& smpte ) const -{ - smpte_wrap_t wrap = smpte_wrap_none; - - // Clear subframes - smpte_frames_floor( smpte ); - - if (smpte.negative) { - // Wrap if on minute boundary - wrap = smpte_increment_seconds( smpte ); - // Go to lowest possible value in this minute - smpte_minutes_floor( smpte ); - } else { - // Go to highest possible second - smpte.seconds = 59; - // Wrap minute by incrementing second - wrap = smpte_increment_seconds( smpte ); - } - - return wrap; -} - -// Go to lowest absolute value in this minute -void -Session::smpte_minutes_floor( SMPTE_Time& smpte ) const -{ - // Go to lowest possible second - smpte.seconds = 0; - // Go to lowest possible frame - smpte_seconds_floor( smpte ); - - if (SMPTE_IS_ZERO(smpte)) { - smpte.negative = false; - } -} - -// Go to next whole hour (minute = 0, second = 0, frame = 0) -smpte_wrap_t -Session::smpte_increment_hours( SMPTE_Time& smpte ) const -{ - smpte_wrap_t wrap = smpte_wrap_none; - - // Clear subframes - smpte_frames_floor(smpte); - - if (smpte.negative) { - // Wrap if on hour boundary - wrap = smpte_increment_minutes( smpte ); - // Go to lowest possible value in this hour - smpte_hours_floor( smpte ); - } else { - smpte.minutes = 59; - wrap = smpte_increment_minutes( smpte ); - } - - return wrap; -} - -// Go to lowest absolute value in this hour -void -Session::smpte_hours_floor( SMPTE_Time& smpte ) const -{ - smpte.minutes = 0; - smpte.seconds = 0; - smpte.frames = 0; - smpte.subframes = 0; - - if (SMPTE_IS_ZERO(smpte)) { - smpte.negative = false; - } -} - void -Session::smpte_to_sample( SMPTE_Time& smpte, jack_nframes_t& sample, bool use_offset, bool use_subframes ) const +Session::smpte_to_sample( SMPTE::Time& smpte, jack_nframes_t& sample, bool use_offset, bool use_subframes ) const { if (smpte_drop_frames) { // The drop frame format was created to better approximate the 30000/1001 = 29.97002997002997.... @@ -562,7 +194,7 @@ Session::smpte_to_sample( SMPTE_Time& smpte, jack_nframes_t& sample, bool use_of void -Session::sample_to_smpte( jack_nframes_t sample, SMPTE_Time& smpte, bool use_offset, bool use_subframes ) const +Session::sample_to_smpte( jack_nframes_t sample, SMPTE::Time& smpte, bool use_offset, bool use_subframes ) const { jack_nframes_t offset_sample; @@ -656,7 +288,7 @@ Session::sample_to_smpte( jack_nframes_t sample, SMPTE_Time& smpte, bool use_off } void -Session::smpte_time (jack_nframes_t when, SMPTE_Time& smpte) +Session::smpte_time (jack_nframes_t when, SMPTE::Time& smpte) { if (last_smpte_valid && when == last_smpte_when) { smpte = last_smpte; @@ -671,7 +303,7 @@ Session::smpte_time (jack_nframes_t when, SMPTE_Time& smpte) } void -Session::smpte_time_subframes (jack_nframes_t when, SMPTE_Time& smpte) +Session::smpte_time_subframes (jack_nframes_t when, SMPTE::Time& smpte) { if (last_smpte_valid && when == last_smpte_when) { smpte = last_smpte; @@ -686,7 +318,7 @@ Session::smpte_time_subframes (jack_nframes_t when, SMPTE_Time& smpte) } void -Session::smpte_duration (jack_nframes_t when, SMPTE_Time& smpte) const +Session::smpte_duration (jack_nframes_t when, SMPTE::Time& smpte) const { sample_to_smpte( when, smpte, false /* use_offset */, true /* use_subframes */ ); } @@ -694,14 +326,14 @@ Session::smpte_duration (jack_nframes_t when, SMPTE_Time& smpte) const void Session::smpte_duration_string (char* buf, jack_nframes_t when) const { - SMPTE_Time smpte; + SMPTE::Time smpte; smpte_duration (when, smpte); snprintf (buf, sizeof (buf), "%02" PRIu32 ":%02" PRIu32 ":%02" PRIu32 ":%02" PRIu32, smpte.hours, smpte.minutes, smpte.seconds, smpte.frames); } void -Session::smpte_time (SMPTE_Time &t) +Session::smpte_time (SMPTE::Time &t) { smpte_time (_transport_frame, t); |