ardour/livetrax
13
0
Fork 0
Code

Tempo ramps - make ramp test more challenging.

Browse Source
This commit is contained in:
nick_m 2016-04-02 05:00:14 +11:00
parent d3f0e65199
commit 8063b1ce3c
1 changed files with 25 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
libs/ardour/test/tempo_test.cc
View File

@ -59,19 +59,27 @@ TempoTest::rampTest ()
Meter meterA (4, 4);
Tempo tempoA (77.0, 4.0);
Tempo tempoB (217.0, 4.0);
map.add_tempo (tempoA, 0.0, TempoSection::Ramp);
map.add_tempo (tempoB, 100.0, TempoSection::Ramp);
map.add_tempo (tempoA, (framepos_t) 0, TempoSection::Ramp);
map.add_tempo (tempoB, (framepos_t) 60 * sampling_rate, TempoSection::Ramp);
map.add_meter (meterA, 0.0, BBT_Time (1, 1, 0));
/*
120bpm 240bpm
0 beats 12 beats
0 frames 288e3 frames
0 pulses 4 pulses
77bpm / note typeA 217bpm / note type B
0 frames 60 * sample rate 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 |
| *|
| * |
| * |
| * |
| * |
| * |
| * |
| * | |
| * | |
| * | | |
-------------------|-----------|-----------------------
20 seconds 125.0 bpm / note_type
*/
TempoSection* tA = 0;
@ -88,6 +96,14 @@ TempoTest::rampTest ()
}
map.recompute_map (map._metrics);
CPPUNIT_ASSERT_EQUAL (tB->frame(), tA->frame_at_tempo (tB->beats_per_minute() / tB->note_type(), 100.0, sampling_rate));
CPPUNIT_ASSERT_EQUAL (tB->frame(), tA->frame_at_tempo (tB->beats_per_minute() / tB->note_type(), 300.0, sampling_rate));
CPPUNIT_ASSERT_EQUAL (tB->frame(), tA->frame_at_pulse (tB->pulse(), sampling_rate));
/* self-check tempo at pulse @ 125 bpm. */
CPPUNIT_ASSERT_DOUBLES_EQUAL (125.0 / 4.0, tA->tempo_at_pulse (tA->pulse_at_tempo (125.0 / 4.0, 0, sampling_rate)), 0.000000000000001);
/* self-check frame at pulse 20 seconds in. */
const framepos_t target = 20 * sampling_rate;
const framepos_t result = tA->frame_at_pulse (tA->pulse_at_frame (target, sampling_rate), sampling_rate);
CPPUNIT_ASSERT_EQUAL (target, result);
}