diff options
author | David Robillard <d@drobilla.net> | 2010-12-14 18:13:37 +0000 |
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committer | David Robillard <d@drobilla.net> | 2010-12-14 18:13:37 +0000 |
commit | 4b861e603972148a29638cade51cee27ebc997a2 (patch) | |
tree | 1ff879960fa5abfece3c560a0562b92189d8adf9 /libs/timecode | |
parent | 341c409fa1d77cf1259f044a3045dc3250b7c030 (diff) |
Rename libmusictime libtimecode (consistent with already used namespace "Timecode").
Move BBT_Time to libtimecode.
git-svn-id: svn://localhost/ardour2/branches/3.0@8271 d708f5d6-7413-0410-9779-e7cbd77b26cf
Diffstat (limited to 'libs/timecode')
-rw-r--r-- | libs/timecode/src/time.cc | 435 | ||||
-rw-r--r-- | libs/timecode/timecode/bbt_time.h | 72 | ||||
-rw-r--r-- | libs/timecode/timecode/time.h | 82 | ||||
-rw-r--r-- | libs/timecode/wscript | 46 |
4 files changed, 635 insertions, 0 deletions
diff --git a/libs/timecode/src/time.cc b/libs/timecode/src/time.cc new file mode 100644 index 0000000000..c87662a18c --- /dev/null +++ b/libs/timecode/src/time.cc @@ -0,0 +1,435 @@ +/* + Copyright (C) 2006 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. +*/ + +#define Timecode_IS_AROUND_ZERO( sm ) (!(sm).frames && !(sm).seconds && !(sm).minutes && !(sm).hours) +#define Timecode_IS_ZERO( sm ) (!(sm).frames && !(sm).seconds && !(sm).minutes && !(sm).hours && !(sm.subframes)) + +#include <math.h> + +#include "timecode/time.h" + +namespace Timecode { + +float Time::default_rate = 30.0; + + +/** Increment @a timecode by exactly one frame (keep subframes value). + * Realtime safe. + * @return true if seconds wrap. + */ +Wrap +increment( Time& timecode, uint32_t subframes_per_frame ) +{ + Wrap wrap = NONE; + + if (timecode.negative) { + if (Timecode_IS_AROUND_ZERO(timecode) && timecode.subframes) { + // We have a zero transition involving only subframes + timecode.subframes = subframes_per_frame - timecode.subframes; + timecode.negative = false; + return SECONDS; + } + + timecode.negative = false; + wrap = decrement( timecode, subframes_per_frame ); + if (!Timecode_IS_ZERO( timecode )) { + timecode.negative = true; + } + return wrap; + } + + switch ((int)ceil(timecode.rate)) { + case 24: + if (timecode.frames == 23) { + timecode.frames = 0; + wrap = SECONDS; + } + break; + case 25: + if (timecode.frames == 24) { + timecode.frames = 0; + wrap = SECONDS; + } + break; + case 30: + if (timecode.drop) { + if (timecode.frames == 29) { + if ( ((timecode.minutes + 1) % 10) && (timecode.seconds == 59) ) { + timecode.frames = 2; + } + else { + timecode.frames = 0; + } + wrap = SECONDS; + } + } else { + + if (timecode.frames == 29) { + timecode.frames = 0; + wrap = SECONDS; + } + } + break; + case 60: + if (timecode.frames == 59) { + timecode.frames = 0; + wrap = SECONDS; + } + break; + } + + if (wrap == SECONDS) { + if (timecode.seconds == 59) { + timecode.seconds = 0; + wrap = MINUTES; + if (timecode.minutes == 59) { + timecode.minutes = 0; + wrap = HOURS; + timecode.hours++; + } else { + timecode.minutes++; + } + } else { + timecode.seconds++; + } + } else { + timecode.frames++; + } + + return wrap; +} + + +/** Decrement @a timecode by exactly one frame (keep subframes value) + * Realtime safe. + * @return true if seconds wrap. */ +Wrap +decrement( Time& timecode, uint32_t subframes_per_frame ) +{ + Wrap wrap = NONE; + + + if (timecode.negative || Timecode_IS_ZERO(timecode)) { + timecode.negative = false; + wrap = increment( timecode, subframes_per_frame ); + timecode.negative = true; + return wrap; + } else if (Timecode_IS_AROUND_ZERO(timecode) && timecode.subframes) { + // We have a zero transition involving only subframes + timecode.subframes = subframes_per_frame - timecode.subframes; + timecode.negative = true; + return SECONDS; + } + + switch ((int)ceil(timecode.rate)) { + case 24: + if (timecode.frames == 0) { + timecode.frames = 23; + wrap = SECONDS; + } + break; + case 25: + if (timecode.frames == 0) { + timecode.frames = 24; + wrap = SECONDS; + } + break; + case 30: + if (timecode.drop) { + if ((timecode.minutes % 10) && (timecode.seconds == 0)) { + if (timecode.frames <= 2) { + timecode.frames = 29; + wrap = SECONDS; + } + } else if (timecode.frames == 0) { + timecode.frames = 29; + wrap = SECONDS; + } + + } else { + if (timecode.frames == 0) { + timecode.frames = 29; + wrap = SECONDS; + } + } + break; + case 60: + if (timecode.frames == 0) { + timecode.frames = 59; + wrap = SECONDS; + } + break; + } + + if (wrap == SECONDS) { + if (timecode.seconds == 0) { + timecode.seconds = 59; + wrap = MINUTES; + if (timecode.minutes == 0) { + timecode.minutes = 59; + wrap = HOURS; + timecode.hours--; + } + else { + timecode.minutes--; + } + } else { + timecode.seconds--; + } + } else { + timecode.frames--; + } + + if (Timecode_IS_ZERO( timecode )) { + timecode.negative = false; + } + + return wrap; +} + + +/** Go to lowest absolute subframe value in this frame (set to 0 :-) ) */ +void +frames_floor( Time& timecode ) +{ + timecode.subframes = 0; + if (Timecode_IS_ZERO(timecode)) { + timecode.negative = false; + } +} + + +/** Increment @a timecode by one subframe */ +Wrap +increment_subframes( Time& timecode, uint32_t subframes_per_frame ) +{ + Wrap wrap = NONE; + + if (timecode.negative) { + timecode.negative = false; + wrap = decrement_subframes( timecode, subframes_per_frame ); + if (!Timecode_IS_ZERO(timecode)) { + timecode.negative = true; + } + return wrap; + } + + timecode.subframes++; + if (timecode.subframes >= subframes_per_frame) { + timecode.subframes = 0; + increment( timecode, subframes_per_frame ); + return FRAMES; + } + return NONE; +} + + +/** Decrement @a timecode by one subframe */ +Wrap +decrement_subframes( Time& timecode, uint32_t subframes_per_frame ) +{ + Wrap wrap = NONE; + + if (timecode.negative) { + timecode.negative = false; + wrap = increment_subframes( timecode, subframes_per_frame ); + timecode.negative = true; + return wrap; + } + + if (timecode.subframes <= 0) { + timecode.subframes = 0; + if (Timecode_IS_ZERO(timecode)) { + timecode.negative = true; + timecode.subframes = 1; + return FRAMES; + } else { + decrement( timecode, subframes_per_frame ); + timecode.subframes = 79; + return FRAMES; + } + } else { + timecode.subframes--; + if (Timecode_IS_ZERO(timecode)) { + timecode.negative = false; + } + return NONE; + } +} + + +/** Go to next whole second (frames == 0 or frames == 2) */ +Wrap +increment_seconds( Time& timecode, uint32_t subframes_per_frame ) +{ + Wrap wrap = NONE; + + // Clear subframes + frames_floor( timecode ); + + if (timecode.negative) { + // Wrap second if on second boundary + wrap = increment(timecode, subframes_per_frame); + // Go to lowest absolute frame value + seconds_floor( timecode ); + if (Timecode_IS_ZERO(timecode)) { + timecode.negative = false; + } + } else { + // Go to highest possible frame in this second + switch ((int)ceil(timecode.rate)) { + case 24: + timecode.frames = 23; + break; + case 25: + timecode.frames = 24; + break; + case 30: + timecode.frames = 29; + break; + case 60: + timecode.frames = 59; + break; + } + + // Increment by one frame + wrap = increment( timecode, subframes_per_frame ); + } + + return wrap; +} + + +/** Go to lowest (absolute) frame value in this second + * Doesn't care about positive/negative */ +void +seconds_floor( Time& timecode ) +{ + // Clear subframes + frames_floor( timecode ); + + // Go to lowest possible frame in this second + switch ((int)ceil(timecode.rate)) { + case 24: + case 25: + case 30: + case 60: + if (!(timecode.drop)) { + timecode.frames = 0; + } else { + + if ((timecode.minutes % 10) && (timecode.seconds == 0)) { + timecode.frames = 2; + } else { + timecode.frames = 0; + } + } + break; + } + + if (Timecode_IS_ZERO(timecode)) { + timecode.negative = false; + } +} + + +/** Go to next whole minute (seconds == 0, frames == 0 or frames == 2) */ +Wrap +increment_minutes( Time& timecode, uint32_t subframes_per_frame ) +{ + Wrap wrap = NONE; + + // Clear subframes + frames_floor( timecode ); + + if (timecode.negative) { + // Wrap if on minute boundary + wrap = increment_seconds( timecode, subframes_per_frame ); + // Go to lowest possible value in this minute + minutes_floor( timecode ); + } else { + // Go to highest possible second + timecode.seconds = 59; + // Wrap minute by incrementing second + wrap = increment_seconds( timecode, subframes_per_frame ); + } + + return wrap; +} + + +/** Go to lowest absolute value in this minute */ +void +minutes_floor( Time& timecode ) +{ + // Go to lowest possible second + timecode.seconds = 0; + // Go to lowest possible frame + seconds_floor( timecode ); + + if (Timecode_IS_ZERO(timecode)) { + timecode.negative = false; + } +} + + +/** Go to next whole hour (minute = 0, second = 0, frame = 0) */ +Wrap +increment_hours( Time& timecode, uint32_t subframes_per_frame ) +{ + Wrap wrap = NONE; + + // Clear subframes + frames_floor(timecode); + + if (timecode.negative) { + // Wrap if on hour boundary + wrap = increment_minutes( timecode, subframes_per_frame ); + // Go to lowest possible value in this hour + hours_floor( timecode ); + } else { + timecode.minutes = 59; + wrap = increment_minutes( timecode, subframes_per_frame ); + } + + return wrap; +} + + +/** Go to lowest absolute value in this hour */ +void +hours_floor( Time& timecode ) +{ + timecode.minutes = 0; + timecode.seconds = 0; + timecode.frames = 0; + timecode.subframes = 0; + + if (Timecode_IS_ZERO(timecode)) { + timecode.negative = false; + } +} + + +} // namespace Timecode + +std::ostream& +operator<<(std::ostream& ostr, const Timecode::Time& t) +{ + return t.print (ostr); +} diff --git a/libs/timecode/timecode/bbt_time.h b/libs/timecode/timecode/bbt_time.h new file mode 100644 index 0000000000..5dda3bfcbf --- /dev/null +++ b/libs/timecode/timecode/bbt_time.h @@ -0,0 +1,72 @@ +/* + Copyright (C) 2002-2009 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., 675 Mass Ave, Cambridge, MA 02139, USA. + +*/ + +#ifndef __timecode_bbt_time_h__ +#define __timecode_bbt_time_h__ + +#include <ostream> +#include <stdint.h> +#include <iomanip> + +namespace Timecode { + +/** Bar, Beat, Tick Time (i.e. Tempo-Based Time) */ +struct BBT_Time { + uint32_t bars; + uint32_t beats; + uint32_t ticks; + + BBT_Time () + : bars (1), beats (1), ticks (0) {} + + BBT_Time (uint32_t ba, uint32_t be, uint32_t t) + : bars (ba), beats (be), ticks (t) {} + + bool operator< (const BBT_Time& other) const { + return bars < other.bars || + (bars == other.bars && beats < other.beats) || + (bars == other.bars && beats == other.beats && ticks < other.ticks); + } + + bool operator== (const BBT_Time& other) const { + return bars == other.bars && beats == other.beats && ticks == other.ticks; + } +}; + +} + +inline std::ostream& +operator<< (std::ostream& o, const Timecode::BBT_Time& bbt) +{ + o << bbt.bars << '|' << bbt.beats << '|' << bbt.ticks; + return o; +} + +inline std::ostream& +print_padded (std::ostream& o, const Timecode::BBT_Time& bbt) +{ + o << std::setfill ('0') << std::right + << std::setw (3) << bbt.bars << "|" + << std::setw (2) << bbt.beats << "|" + << std::setw (4) << bbt.ticks; + + return o; +} + +#endif /* __timecode_bbt_time_h__ */ diff --git a/libs/timecode/timecode/time.h b/libs/timecode/timecode/time.h new file mode 100644 index 0000000000..6b04b70cc3 --- /dev/null +++ b/libs/timecode/timecode/time.h @@ -0,0 +1,82 @@ +/* + Copyright (C) 2006 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 __ardour_timecode_h__ +#define __ardour_timecode_h__ + +#include <ostream> +#include <inttypes.h> + +namespace Timecode { + +enum Wrap { + NONE = 0, + FRAMES, + SECONDS, + MINUTES, + 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) { + negative = false; + hours = 0; + minutes = 0; + seconds = 0; + frames = 0; + subframes = 0; + rate = a_rate; + } + + std::ostream& print (std::ostream& ostr) const { + if (negative) { + ostr << '-'; + } + ostr << hours << ':' << minutes << ':' << seconds << ':' << frames << '.' << subframes << " @" << rate << (drop ? " drop" : " nondrop"); + return ostr; + } + +}; + +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 ); + +} // namespace Timecode + +std::ostream& operator<<(std::ostream& ostr, const Timecode::Time& t); + +#endif // __ardour_timecode_h__ diff --git a/libs/timecode/wscript b/libs/timecode/wscript new file mode 100644 index 0000000000..efdc814053 --- /dev/null +++ b/libs/timecode/wscript @@ -0,0 +1,46 @@ +#!/usr/bin/env python +import autowaf +import Options +import os + +# Version of this package (even if built as a child) +TIMECODE_VERSION = '0.0.0' + +# Library version (UNIX style major, minor, micro) +# major increment <=> incompatible changes +# minor increment <=> compatible changes (additions) +# micro increment <=> no interface changes +# Version history: +# 0.0.0 = 0,0,0 +TIMECODE_LIB_VERSION = '0.0.0' + +# Variables for 'waf dist' +APPNAME = 'timecode' +VERSION = TIMECODE_VERSION + +# Mandatory variables +srcdir = '.' +blddir = 'build' + +def set_options(opt): + autowaf.set_options(opt) + +def configure(conf): + autowaf.configure(conf) + + conf.check_tool('compiler_cxx') + +def build(bld): + # Library + obj = bld.new_task_gen('cxx', 'shlib') + obj.source = 'src/time.cc' + obj.export_incdirs = ['.'] + obj.includes = ['.', './src'] + obj.name = 'libtimecode' + obj.target = 'timecode' + obj.vnum = TIMECODE_LIB_VERSION + obj.install_path = os.path.join(bld.env['LIBDIR'], 'ardour3') + +def shutdown(): + autowaf.shutdown() + |