diff options
Diffstat (limited to 'libs/ardour/test/samplepos_plus_beats_test.cc')
-rw-r--r-- | libs/ardour/test/samplepos_plus_beats_test.cc | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/libs/ardour/test/samplepos_plus_beats_test.cc b/libs/ardour/test/samplepos_plus_beats_test.cc new file mode 100644 index 0000000000..d567f4691c --- /dev/null +++ b/libs/ardour/test/samplepos_plus_beats_test.cc @@ -0,0 +1,196 @@ +#include "samplepos_plus_beats_test.h" +#include "ardour/tempo.h" +#include "timecode/bbt_time.h" + +CPPUNIT_TEST_SUITE_REGISTRATION (FrameposPlusBeatsTest); + +using namespace std; +using namespace ARDOUR; +using namespace Timecode; + +/* Basic tests with no tempo / meter changes */ +void +FrameposPlusBeatsTest::singleTempoTest () +{ + int const sampling_rate = 48000; + int const bpm = 120; + + double const samples_per_beat = (60 / double (bpm)) * double (sampling_rate); + + TempoMap map (sampling_rate); + Tempo tempo (bpm, 4.0); + Meter meter (4, 4); + + map.replace_meter (map.first_meter(), meter, BBT_Time (1, 1, 0), 0, AudioTime); + map.replace_tempo (map.first_tempo(), tempo, 0.0, 0, AudioTime); + + /* Add 1 beat to beat 3 of the first bar */ + samplepos_t r = map.samplepos_plus_qn (samples_per_beat * 2, Evoral::Beats(1)); + CPPUNIT_ASSERT_EQUAL (samplepos_t (samples_per_beat * 3), r); + + /* Add 4 beats to a -ve sample of 1 beat before zero */ + r = map.samplepos_plus_qn (-samples_per_beat * 1, Evoral::Beats(4)); + CPPUNIT_ASSERT_EQUAL (samplepos_t (samples_per_beat * 3), r); +} + +/* Test adding things that overlap a tempo change */ +void +FrameposPlusBeatsTest::doubleTempoTest () +{ + int const sampling_rate = 48000; + + TempoMap map (sampling_rate); + Meter meter (4, 4); + map.replace_meter (map.first_meter(), meter, BBT_Time (1, 1, 0), 0, AudioTime); + + /* + 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 samples 288e3 samples + 0 pulses 3 pulses + | | | | | + | 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, 4.0); + map.replace_tempo (map.first_tempo(), tempoA, 0.0, 0, AudioTime); + Tempo tempoB (240, 4.0); + map.add_tempo (tempoB, 12.0 / tempoA.note_type(), 0, MusicTime); + + /* Now some tests */ + + /* Add 1 beat to 1|2 */ + samplepos_t r = map.samplepos_plus_qn (24e3, Evoral::Beats(1)); + CPPUNIT_ASSERT_EQUAL (samplepos_t (48e3), r); + + /* Add 2 beats to 3|4 (over the tempo change) */ + r = map.samplepos_plus_qn (264e3, Evoral::Beats(2)); + CPPUNIT_ASSERT_EQUAL (samplepos_t (264e3 + 24e3 + 12e3), r); + + /* Add 2.5 beats to 3|3|960 (over the tempo change) */ + r = map.samplepos_plus_qn (264e3 - 12e3, Evoral::Beats(2.5)); + CPPUNIT_ASSERT_EQUAL (samplepos_t (264e3 + 24e3 + 12e3), r); +} + +/* Same as doubleTempoTest () except put a meter change at the same time as the + tempo change (which shouldn't affect anything, since we are just dealing with + beats) +*/ + +void +FrameposPlusBeatsTest::doubleTempoWithMeterTest () +{ + int const sampling_rate = 48000; + + TempoMap map (sampling_rate); + Meter meterA (4, 4); + map.replace_meter (map.first_meter(), meterA, BBT_Time (1, 1, 0), 0, AudioTime); + + /* + 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 samples 288e3 samples + 0 pulses 3 pulses + | | | | | + | 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 | + + */ + + Tempo tempoA (120, 4.0); + map.replace_tempo (map.first_tempo(), tempoA, 0.0, 0, AudioTime); + Tempo tempoB (240, 4.0); + map.add_tempo (tempoB, 12.0 / tempoA.note_type(), 0, MusicTime); + Meter meterB (3, 8); + map.add_meter (meterB, BBT_Time (4, 1, 0), 0, MusicTime); + + /* Now some tests */ + + /* Add 1 beat to 1|2 */ + samplepos_t r = map.samplepos_plus_qn (24e3, Evoral::Beats(1)); + CPPUNIT_ASSERT_EQUAL (samplepos_t (48e3), r); + + /* Add 2 beats to 3|4 (over the tempo change) */ + r = map.samplepos_plus_qn (264e3, Evoral::Beats(2)); + CPPUNIT_ASSERT_EQUAL (samplepos_t (264e3 + 24e3 + 12e3), r); + + /* Add 2.5 beats to 3|3|960 (over the tempo change) */ + r = map.samplepos_plus_qn (264e3 - 12e3, Evoral::Beats(2.5)); + CPPUNIT_ASSERT_EQUAL (samplepos_t (264e3 + 24e3 + 12e3), r); +} + +/* Same as doubleTempoWithMeterTest () except use odd meter divisors + (which shouldn't affect anything, since we are just dealing with + beats) +*/ + +void +FrameposPlusBeatsTest::doubleTempoWithComplexMeterTest () +{ + int const sampling_rate = 48000; + + TempoMap map (sampling_rate); + Meter meterA (3, 4); + map.replace_meter (map.first_meter(), meterA, BBT_Time (1, 1, 0), 0, AudioTime); + + /* + 120bpm at bar 1, 240bpm at bar 4 + + 120bpm = 24e3 samples per beat + 240bpm = 12e3 samples per beat + */ + + + /* + + 120bpm 5/8 240bpm + 0 beats 9 quarter note beats 12 quarter note beats + 9 meter-based beat 15 meter-based beat + 0 samples 288e3 samples + 0 pulses | 3 pulses + | | | | | + | 1.1 1.2 1.3 | 2.1 2.2 2.3 | 3.1 3.2 3.3 |4.14.24.34.44.5|5.15.2^5.35.45.5| + | + 4|1|0 + */ + + Tempo tempoA (120, 4.0); + map.replace_tempo (map.first_tempo(), tempoA, 0.0, 0, AudioTime); + Tempo tempoB (240, 4.0); + map.add_tempo (tempoB, 12.0 / 4.0, 0, MusicTime); + Meter meterB (5, 8); + map.add_meter (meterB, BBT_Time (4, 1, 0), 0, MusicTime); + /* Now some tests */ + + /* Add 1 beat to 1|2 */ + samplepos_t r = map.samplepos_plus_qn (24e3, Evoral::Beats(1)); + CPPUNIT_ASSERT_EQUAL (samplepos_t (48e3), r); + + /* Add 2 beats to 5|1 (over the tempo change) */ + r = map.samplepos_plus_qn (264e3, Evoral::Beats(2)); + CPPUNIT_ASSERT_EQUAL (samplepos_t (264e3 + 24e3 + 12e3), r); + + /* Add 2.5 beats to 4|5 (over the tempo change) */ + r = map.samplepos_plus_qn (264e3 - 12e3, Evoral::Beats(2.5)); + CPPUNIT_ASSERT_EQUAL (samplepos_t (264e3 + 24e3 + 12e3), r); +} + + |