diff options
Diffstat (limited to 'libs/ardour/test/framewalk_to_beats_test.cc')
| -rw-r--r-- | libs/ardour/test/framewalk_to_beats_test.cc | 68 |
1 files changed, 66 insertions, 2 deletions
diff --git a/libs/ardour/test/framewalk_to_beats_test.cc b/libs/ardour/test/framewalk_to_beats_test.cc index c7fb45cada..c5bd47b62a 100644 --- a/libs/ardour/test/framewalk_to_beats_test.cc +++ b/libs/ardour/test/framewalk_to_beats_test.cc @@ -23,11 +23,75 @@ FramewalkToBeatsTest::singleTempoTest () map.add_meter (meter, BBT_Time (1, 1, 0)); map.add_tempo (tempo, BBT_Time (1, 1, 0)); - /* Add 1 beats-worth of frames to a 2 beat starting point */ + /* Walk 1 beats-worth of frames from beat 3 */ double r = map.framewalk_to_beats (frames_per_beat * 2, frames_per_beat * 1); CPPUNIT_ASSERT (r == 1); - /* Add 6 beats-worth of frames to a 3 beat starting point */ + /* Walk 6 beats-worth of frames from beat 4 */ r = map.framewalk_to_beats (frames_per_beat * 3, frames_per_beat * 6); CPPUNIT_ASSERT (r == 6); + + /* Walk 1.5 beats-worth of frames from beat 3 */ + r = map.framewalk_to_beats (frames_per_beat * 2, frames_per_beat * 1.5); + CPPUNIT_ASSERT (r == 1.5); + + /* Walk 1.5 beats-worth of frames from beat 2.5 */ + r = map.framewalk_to_beats (frames_per_beat * 2.5, frames_per_beat * 1.5); + CPPUNIT_ASSERT (r == 1.5); } + +void +FramewalkToBeatsTest::doubleTempoTest () +{ + int const sampling_rate = 48000; + + TempoMap map (sampling_rate); + Meter meter (4, 4); + map.add_meter (meter, BBT_Time (1, 1, 0)); + + /* + 120bpm at bar 1, 240bpm at bar 4 + + 120bpm = 24e3 samples per beat + 240bpm = 12e3 samples per beat + */ + + + /* + + 120bpm 240bpm + 0 beats 12 beats + 0 frames 288e3 frames + | | | | | + | 1.1 1.2 1.3 1.4 | 2.1 2.2 2.3.2.4 | 3.1 3.2 3.3 3.4 | 4.1 4.2 4.3 4.4 | + + */ + + Tempo tempoA (120); + map.add_tempo (tempoA, BBT_Time (1, 1, 0)); + Tempo tempoB (240); + map.add_tempo (tempoB, BBT_Time (4, 1, 0)); + + /* Now some tests */ + + /* Walk 1 beat from 1.2 */ + double r = map.framewalk_to_beats (24e3, 24e3); + assert (r == 1); + + /* Walk 2 beats from 3.3 to 4.1 (over the tempo change) */ + r = map.framewalk_to_beats (264e3, (24e3 + 12e3)); + assert (r == 2); + + /* Walk 2.5 beats from 3.3-and-a-half to 4.2 (over the tempo change) */ + r = map.framewalk_to_beats (264e3 - 12e3, (24e3 + 12e3 + 12e3)); + assert (r == 2.5); + + /* Walk 3 beats from 3.3-and-a-half to 4.2-and-a-half (over the tempo change) */ + r = map.framewalk_to_beats (264e3 - 12e3, (24e3 + 12e3 + 12e3 + 6e3)); + assert (r == 3); + + /* Walk 3.5 beats from 3.3-and-a-half to 4.3 (over the tempo change) */ + r = map.framewalk_to_beats (264e3 - 12e3, (24e3 + 12e3 + 12e3 + 12e3)); + assert (r == 3.5); +} + |