3 #include "ardour/dsp_load_calculator.h"
5 #include "dsp_load_calculator_test.h"
7 CPPUNIT_TEST_SUITE_REGISTRATION (DSPLoadCalculatorTest);
10 #if defined(PLATFORM_WINDOWS) && defined(COMPILER_MINGW)
11 /* cppunit-1.13.2 uses assertion_traits<double>
12 * sprintf( , "%.*g", precision, x)
13 * to format a double. The actual comparison is performed on a string.
14 * This is problematic with mingw/windows|wine, "%.*g" formatting fails.
16 * This quick hack compares float, however float compatisons are at most Y.MMMM+eXX,
17 * the max precision needs to be limited. to the last mantissa digit.
19 * Anyway, actual maths is verified with Linux and OSX unit-tests,
20 * and this needs to go to https://sourceforge.net/p/cppunit/bugs/
22 #define CPPUNIT_ASSERT_DOUBLES_EQUAL(A,B,P) CPPUNIT_ASSERT_EQUAL((float)rint ((A) / (P)),(float)rint ((B) / (P)))
26 using namespace ARDOUR;
29 DSPLoadCalculatorTest::basicTest ()
31 DSPLoadCalculator dsp_calc;
33 dsp_calc.set_max_time(48000, 512);
34 int64_t dsp_100_pc_48k_us = 10666;
36 CPPUNIT_ASSERT(dsp_calc.get_max_time_us() == dsp_100_pc_48k_us);
38 // test equivalent of 10% load
39 dsp_calc.set_start_timestamp_us(0);
40 dsp_calc.set_stop_timestamp_us(dsp_100_pc_48k_us/10);
41 CPPUNIT_ASSERT(dsp_calc.get_dsp_load() <= 0.1f);
43 // test equivalent of 50% load and check that the load jumps to 50 percent
44 dsp_calc.set_start_timestamp_us(0);
45 dsp_calc.set_stop_timestamp_us(dsp_100_pc_48k_us/2);
46 CPPUNIT_ASSERT(dsp_calc.get_dsp_load() <= 0.5f);
48 // test equivalent of 100% load
49 dsp_calc.set_start_timestamp_us(0);
50 dsp_calc.set_stop_timestamp_us(dsp_100_pc_48k_us);
51 CPPUNIT_ASSERT(dsp_calc.elapsed_time_us() == dsp_100_pc_48k_us);
52 CPPUNIT_ASSERT(dsp_calc.get_dsp_load() <= 1.0f);
54 // test setting the equivalent of 100% twice doesn't lead to a dsp value > 1.0
55 dsp_calc.set_start_timestamp_us(dsp_100_pc_48k_us);
56 dsp_calc.set_stop_timestamp_us(dsp_100_pc_48k_us * 2);
57 CPPUNIT_ASSERT(dsp_calc.elapsed_time_us() == dsp_100_pc_48k_us);
58 CPPUNIT_ASSERT(dsp_calc.get_dsp_load() <= 1.0f);
60 // test setting the equivalent of 200% clamps the value to 1.0
61 dsp_calc.set_start_timestamp_us(dsp_100_pc_48k_us);
62 dsp_calc.set_stop_timestamp_us(dsp_100_pc_48k_us * 3);
63 CPPUNIT_ASSERT(dsp_calc.get_dsp_load() == 1.0f);
65 // test setting the an stop timestamp before the start timestamp is ignored
66 // and the previous dsp value is returned
67 dsp_calc.set_start_timestamp_us(dsp_100_pc_48k_us * 2);
68 dsp_calc.set_stop_timestamp_us(dsp_100_pc_48k_us);
69 CPPUNIT_ASSERT(dsp_calc.get_dsp_load() == 1.0f);
71 float dsp_load = dsp_calc.get_dsp_load();
73 // test setting the equivalent of beyond the max_timer_error_us is ignored and
74 // the previous dsp value is returned
75 dsp_calc.set_start_timestamp_us (0);
76 dsp_calc.set_stop_timestamp_us (dsp_100_pc_48k_us*10);
77 CPPUNIT_ASSERT(dsp_calc.elapsed_time_us() > dsp_calc.max_timer_error_us());
78 CPPUNIT_ASSERT(dsp_calc.get_dsp_load() == dsp_load);
80 // test the rate of rolloff of the LPF from 100% with load at constant 50%
81 // over the equivalent of 1 second
82 for (int i = 0; i < 1e6 / dsp_100_pc_48k_us; ++i) {
83 dsp_calc.set_start_timestamp_us(0);
84 dsp_calc.set_stop_timestamp_us(dsp_100_pc_48k_us / 2);
85 CPPUNIT_ASSERT(dsp_calc.elapsed_time_us() == 5333);
86 CPPUNIT_ASSERT(dsp_calc.get_dsp_load() <= 1.0);
87 CPPUNIT_ASSERT(dsp_calc.get_dsp_load() >= 0.5);
89 std::cout << "DSP 50% load value = " << dsp_calc.get_dsp_load() << std::endl;
93 // test that the LPF is still working after one second of values
94 // TODO need to work out what is required in terms of responsiveness etc
95 CPPUNIT_ASSERT(dsp_calc.get_dsp_load() > 0.5f);
98 DSPLoadCalculator dsp_calc_96k;
99 dsp_calc_96k.set_max_time(96000, 512);
100 int64_t dsp_100_pc_96k_us = 5333;
102 // reset both to 100%
103 dsp_calc.set_start_timestamp_us(dsp_100_pc_48k_us);
104 dsp_calc.set_stop_timestamp_us(dsp_100_pc_48k_us * 2);
105 CPPUNIT_ASSERT(dsp_calc.elapsed_time_us() == dsp_100_pc_48k_us);
106 CPPUNIT_ASSERT(dsp_calc.get_dsp_load() <= 1.0f);
107 dsp_calc_96k.set_start_timestamp_us(dsp_100_pc_96k_us);
108 dsp_calc_96k.set_stop_timestamp_us(dsp_100_pc_96k_us * 2);
109 CPPUNIT_ASSERT(dsp_calc_96k.elapsed_time_us() == dsp_100_pc_96k_us);
110 CPPUNIT_ASSERT(dsp_calc_96k.get_dsp_load() <= 1.0f);
112 // test the rate of rolloff of the LPF from 100% with load at constant 50%
113 // over the equivalent of 1 second for 48k and 96k and test for ~equality
114 for (int i = 0; i < 1e6 / dsp_100_pc_96k_us; ++i) {
115 dsp_calc_96k.set_start_timestamp_us(0);
116 dsp_calc_96k.set_stop_timestamp_us(dsp_100_pc_96k_us / 2);
118 dsp_calc.set_start_timestamp_us(0);
119 dsp_calc.set_stop_timestamp_us(dsp_100_pc_48k_us / 2);
121 std::cout << "DSP 50% load value 48k = " << dsp_calc.get_dsp_load()
123 std::cout << "DSP 50% load value 96k = " << dsp_calc_96k.get_dsp_load()
126 CPPUNIT_ASSERT_DOUBLES_EQUAL(dsp_calc.get_dsp_load(),
127 dsp_calc_96k.get_dsp_load(), 0.001);