172 lines
5.5 KiB
C++
172 lines
5.5 KiB
C++
#include "samplewalk_to_beats_test.h"
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#include "ardour/tempo.h"
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#include "temporal/bbt_time.h"
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CPPUNIT_TEST_SUITE_REGISTRATION (FramewalkToBeatsTest);
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using namespace std;
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using namespace ARDOUR;
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using namespace Timecode;
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void
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FramewalkToBeatsTest::singleTempoTest ()
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{
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int const sampling_rate = 48000;
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int const bpm = 120;
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double const samples_per_beat = (60 / double (bpm)) * double (sampling_rate);
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TempoMap map (sampling_rate);
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Tempo tempo (bpm, 4.0);
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Meter meter (4, 4);
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map.replace_meter (map.meter_section_at_sample (0), meter, BBT_Time (1, 1, 0), 0, AudioTime);
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map.replace_tempo (map.tempo_section_at_sample (0), tempo, 0.0, 0, AudioTime);
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/* Walk 1 beats-worth of samples from beat 3 */
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double r = map.framewalk_to_qn (samples_per_beat * 2, samples_per_beat * 1).to_double();
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CPPUNIT_ASSERT_EQUAL (1.0, r);
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/* Walk 6 beats-worth of samples from beat 4 */
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r = map.framewalk_to_qn (samples_per_beat * 3, samples_per_beat * 6).to_double();
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CPPUNIT_ASSERT_EQUAL (6.0, r);
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/* Walk 1.5 beats-worth of samples from beat 3 */
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r = map.framewalk_to_qn (samples_per_beat * 2, samples_per_beat * 1.5).to_double();
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CPPUNIT_ASSERT_EQUAL (1.5, r);
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/* Walk 1.5 beats-worth of samples from beat 2.5 */
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r = map.framewalk_to_qn (samples_per_beat * 2.5, samples_per_beat * 1.5).to_double();
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CPPUNIT_ASSERT_EQUAL (1.5, r);
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}
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void
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FramewalkToBeatsTest::doubleTempoTest ()
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{
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int const sampling_rate = 48000;
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TempoMap map (sampling_rate);
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Meter meter (4, 4);
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map.replace_meter (map.meter_section_at_sample (0), meter, BBT_Time (1, 1, 0), 0, AudioTime);
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/*
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120bpm at bar 1, 240bpm at bar 4
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120bpm = 24e3 samples per beat
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240bpm = 12e3 samples per beat
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*/
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/*
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120bpm 240bpm
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0 beats 12 beats
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0 samples 288e3 samples
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24e3 samples per beat 12e3 samples per beat
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0 pulses 4 pulses
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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 5.1
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0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
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*/
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Tempo tempoA (120);
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map.replace_tempo (map.tempo_section_at_sample (0), tempoA, 0.0, 0, AudioTime);
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Tempo tempoB (240);
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map.add_tempo (tempoB, 12.0 / tempoB.note_type(), 0, MusicTime);
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/* Now some tests */
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/* Walk 1 beat from 1|2 */
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double r = map.framewalk_to_qn (24e3, 24e3).to_double();
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CPPUNIT_ASSERT_EQUAL (1.0, r);
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/* Walk 2 beats from 3|3 to 4|1 (over the tempo change) */
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r = map.framewalk_to_qn (240e3, (24e3 + 24e3)).to_double();
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CPPUNIT_ASSERT_EQUAL (2.0, r);
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/* Walk 2.5 beats from 3|3.5 to 4.2 (over the tempo change) */
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r = map.framewalk_to_qn (264e3 - 12e3, (24e3 + 12e3 + 12e3)).to_double();
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CPPUNIT_ASSERT_EQUAL (2.5, r);
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/* Walk 3 beats from 3|4.5 to 4|3.5 (over the tempo change) */
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r = map.framewalk_to_qn (264e3 - 12e3, (24e3 + 12e3 + 12e3 + 6e3)).to_double();
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CPPUNIT_ASSERT_EQUAL (3.0, r);
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/* Walk 3.5 beats from 3|4.5 to 4.4 (over the tempo change) */
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r = map.framewalk_to_qn (264e3 - 12e3, (24e3 + 12e3 + 12e3 + 12e3)).to_double();
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CPPUNIT_ASSERT_EQUAL (3.5, r);
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}
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void
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FramewalkToBeatsTest::tripleTempoTest ()
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{
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int const sampling_rate = 48000;
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TempoMap map (sampling_rate);
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Meter meter (4, 4);
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map.replace_meter (map.meter_section_at_sample (0), meter, BBT_Time (1, 1, 0), 0, AudioTime);
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/*
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120bpm at bar 1, 240bpm at bar 2, 160bpm at bar 3
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120bpm = 24e3 samples per beat
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160bpm = 18e3 samples per beat
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240bpm = 12e3 samples per beat
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*/
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/*
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120bpm 240bpm 160bpm
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0 beats 4 beats 8 beats
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0 samples 96e3 samples 144e3 samples
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0 pulses 1 pulse 2 pulses
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| 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 |
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*/
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Tempo tempoA (120, 4.0);
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map.replace_tempo (map.tempo_section_at_sample (0), tempoA, 0.0, 0, AudioTime);
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Tempo tempoB (240, 4.0);
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map.add_tempo (tempoB, 4.0 / tempoB.note_type(), 0, MusicTime);
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Tempo tempoC (160, 4.0);
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map.add_tempo (tempoC, 8.0 / tempoB.note_type(), 0, MusicTime);
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/* Walk from 1|3 to 4|1 */
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double r = map.framewalk_to_qn (2 * 24e3, (2 * 24e3) + (4 * 12e3) + (4 * 18e3)).to_double();
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CPPUNIT_ASSERT_EQUAL (10.0, r);
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}
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void
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FramewalkToBeatsTest::singleTempoMeterTest ()
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{
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int const sampling_rate = 48000;
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int const bpm = 120;
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double const samples_per_beat = (60 / double (bpm)) * double (sampling_rate);
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TempoMap map (sampling_rate);
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Tempo tempo (bpm, 4.0);
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Meter meter (7, 8);
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map.replace_meter (map.meter_section_at_sample (0), meter, BBT_Time (1, 1, 0), 0, AudioTime);
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map.replace_tempo (map.tempo_section_at_sample (0), tempo, 0.0, 0, AudioTime);
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/* Walk 1 qn beats-worth of samples from beat 3 */
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double r = map.framewalk_to_qn (samples_per_beat * 2, samples_per_beat * 1).to_double();
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CPPUNIT_ASSERT_EQUAL (1.0, r);
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/* Walk 6 qn beats-worth of samples from beat 4 */
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r = map.framewalk_to_qn (samples_per_beat * 3, samples_per_beat * 6).to_double();
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CPPUNIT_ASSERT_EQUAL (6.0, r);
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/* Walk 1.5 qn beats-worth of samples from beat 3 */
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r = map.framewalk_to_qn (samples_per_beat * 2, samples_per_beat * 1.5).to_double();
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CPPUNIT_ASSERT_EQUAL (1.5, r);
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/* Walk 1.5 qn beats-worth of samples from beat 2.5 */
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r = map.framewalk_to_qn (samples_per_beat * 2.5, samples_per_beat * 1.5).to_double();
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CPPUNIT_ASSERT_EQUAL (1.5, r);
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}
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