diff options
Diffstat (limited to 'libs/ardour/test/samplepos_minus_beats_test.cc')
| -rw-r--r-- | libs/ardour/test/samplepos_minus_beats_test.cc | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/libs/ardour/test/samplepos_minus_beats_test.cc b/libs/ardour/test/samplepos_minus_beats_test.cc new file mode 100644 index 0000000000..5d2d95ac74 --- /dev/null +++ b/libs/ardour/test/samplepos_minus_beats_test.cc @@ -0,0 +1,141 @@ +#include "samplepos_minus_beats_test.h" +#include "ardour/tempo.h" +#include "timecode/bbt_time.h" + +CPPUNIT_TEST_SUITE_REGISTRATION (FrameposMinusBeatsTest); + +using namespace std; +using namespace ARDOUR; +using namespace Timecode; +using namespace Evoral; + +/* Basic tests with no tempo / meter changes */ +void +FrameposMinusBeatsTest::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); + Meter meter (4, 4); + + map.replace_meter (map.first_meter(), meter, BBT_Time (1, 1, 0), (samplepos_t) 0, AudioTime); + map.replace_tempo (map.first_tempo(), tempo, 0.0, 0, TempoSection::Constant, AudioTime); + + /* Subtract 1 beat from beat 3 of the first bar */ + samplepos_t r = map.samplepos_minus_qn (samples_per_beat * 2, Beats(1)); + CPPUNIT_ASSERT_EQUAL (r, samplepos_t (samples_per_beat * 1)); + + /* Subtract 4 beats from 3 beats in, to go beyond zero */ + r = map.samplepos_minus_qn (samples_per_beat * 3, Beats(4)); + CPPUNIT_ASSERT_EQUAL (r, samplepos_t (- samples_per_beat)); +} + +/* Test adding things that overlap a tempo change */ +void +FrameposMinusBeatsTest::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), (samplepos_t) 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 4 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); + map.replace_tempo (map.first_tempo(), tempoA, 0.0, 0, TempoSection::Constant, AudioTime); + Tempo tempoB (240); + map.add_tempo (tempoB, 12.0 / tempoA.note_type(), 0, TempoSection::Constant, MusicTime); + + /* Now some tests */ + + /* Subtract 1 beat from 1|2 */ + samplepos_t r = map.samplepos_minus_qn (24e3, Beats(1)); + CPPUNIT_ASSERT_EQUAL (r, samplepos_t (0)); + + /* Subtract 2 beats from 4|2 (over the tempo change) */ + r = map.samplepos_minus_qn (288e3 + 12e3, Beats(2)); + CPPUNIT_ASSERT_EQUAL (r, samplepos_t (288e3 - 24e3)); + + /* Subtract 2.5 beats from 4|2 (over the tempo change) */ + r = map.samplepos_minus_qn (288e3 + 12e3, Beats(2.5)); + CPPUNIT_ASSERT_EQUAL (r, samplepos_t (288e3 - 24e3 - 12e3)); +} + +/* 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 +FrameposMinusBeatsTest::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), (samplepos_t) 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); + map.replace_tempo (map.first_tempo(), tempoA, 0.0, 0, TempoSection::Constant, AudioTime); + Tempo tempoB (240); + map.add_tempo (tempoB, 12.0 / tempoA.note_type(), 0, TempoSection::Constant, MusicTime); + Meter meterB (3, 4); + map.add_meter (meterB, 12.0, BBT_Time (4, 1, 0), 0, MusicTime); + + /* Now some tests */ + + /* Subtract 1 beat from 1|2 */ + samplepos_t r = map.samplepos_minus_qn (24e3, Beats(1)); + CPPUNIT_ASSERT_EQUAL (r, samplepos_t (0)); + + /* Subtract 2 beats from 4|2 (over the tempo change) */ + r = map.samplepos_minus_qn (288e3 + 12e3, Beats(2)); + CPPUNIT_ASSERT_EQUAL (r, samplepos_t (288e3 - 24e3)); + + /* Subtract 2.5 beats from 4|2 (over the tempo change) */ + r = map.samplepos_minus_qn (288e3 + 12e3, Beats(2.5)); + CPPUNIT_ASSERT_EQUAL (r, samplepos_t (288e3 - 24e3 - 12e3)); +} + + |