1 #include "framewalk_to_beats_test.h"
2 #include "ardour/tempo.h"
3 #include "timecode/bbt_time.h"
5 CPPUNIT_TEST_SUITE_REGISTRATION (FramewalkToBeatsTest);
8 using namespace ARDOUR;
9 using namespace Timecode;
12 FramewalkToBeatsTest::singleTempoTest ()
14 int const sampling_rate = 48000;
17 double const frames_per_beat = (60 / double (bpm)) * double (sampling_rate);
19 TempoMap map (sampling_rate);
23 map.add_meter (meter, BBT_Time (1, 1, 0));
24 map.add_tempo (tempo, BBT_Time (1, 1, 0));
26 /* Walk 1 beats-worth of frames from beat 3 */
27 double r = map.framewalk_to_beats (frames_per_beat * 2, frames_per_beat * 1);
28 CPPUNIT_ASSERT_EQUAL (1.0, r);
30 /* Walk 6 beats-worth of frames from beat 4 */
31 r = map.framewalk_to_beats (frames_per_beat * 3, frames_per_beat * 6);
32 CPPUNIT_ASSERT_EQUAL (6.0, r);
34 /* Walk 1.5 beats-worth of frames from beat 3 */
35 r = map.framewalk_to_beats (frames_per_beat * 2, frames_per_beat * 1.5);
36 CPPUNIT_ASSERT_EQUAL (1.5, r);
38 /* Walk 1.5 beats-worth of frames from beat 2.5 */
39 r = map.framewalk_to_beats (frames_per_beat * 2.5, frames_per_beat * 1.5);
40 CPPUNIT_ASSERT_EQUAL (1.5, r);
44 FramewalkToBeatsTest::doubleTempoTest ()
46 int const sampling_rate = 48000;
48 TempoMap map (sampling_rate);
50 map.add_meter (meter, BBT_Time (1, 1, 0));
53 120bpm at bar 1, 240bpm at bar 4
55 120bpm = 24e3 samples per beat
56 240bpm = 12e3 samples per beat
66 | 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 |
71 map.add_tempo (tempoA, BBT_Time (1, 1, 0));
73 map.add_tempo (tempoB, BBT_Time (4, 1, 0));
77 /* Walk 1 beat from 1|2 */
78 double r = map.framewalk_to_beats (24e3, 24e3);
79 CPPUNIT_ASSERT_EQUAL (1.0, r);
81 /* Walk 2 beats from 3|3 to 4|1 (over the tempo change) */
82 r = map.framewalk_to_beats (240e3, (24e3 + 24e3));
83 CPPUNIT_ASSERT_EQUAL (2.0, r);
85 /* Walk 2.5 beats from 3|3.5 to 4.2 (over the tempo change) */
86 r = map.framewalk_to_beats (264e3 - 12e3, (24e3 + 12e3 + 12e3));
87 CPPUNIT_ASSERT_EQUAL (2.5, r);
89 /* Walk 3 beats from 3|4.5 to 4|3.5 (over the tempo change) */
90 r = map.framewalk_to_beats (264e3 - 12e3, (24e3 + 12e3 + 12e3 + 6e3));
91 CPPUNIT_ASSERT_EQUAL (3.0, r);
93 /* Walk 3.5 beats from 3|4.5 to 4.4 (over the tempo change) */
94 r = map.framewalk_to_beats (264e3 - 12e3, (24e3 + 12e3 + 12e3 + 12e3));
95 CPPUNIT_ASSERT_EQUAL (3.5, r);
99 FramewalkToBeatsTest::tripleTempoTest ()
101 int const sampling_rate = 48000;
103 TempoMap map (sampling_rate);
105 map.add_meter (meter, BBT_Time (1, 1, 0));
108 120bpm at bar 1, 240bpm at bar 2, 160bpm at bar 3
110 120bpm = 24e3 samples per beat
111 160bpm = 18e3 samples per beat
112 240bpm = 12e3 samples per beat
119 0 beats 4 beats 8 beats
120 0 frames 96e3 frames 144e3 frames
122 | 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 |
127 map.add_tempo (tempoA, BBT_Time (1, 1, 0));
129 map.add_tempo (tempoB, BBT_Time (2, 1, 0));
131 map.add_tempo (tempoC, BBT_Time (3, 1, 0));
133 /* Walk from 1|3 to 4|1 */
134 double r = map.framewalk_to_beats (2 * 24e3, (2 * 24e3) + (4 * 12e3) + (4 * 18e3));
135 CPPUNIT_ASSERT_EQUAL (10.0, r);