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#include "samplepos_minus_beats_test.h"
#include "ardour/tempo.h"
#include "temporal/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));
}
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