Jamoma API  0.6.0.a19
TTLinearFunction.test.cpp
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1 /** @file
2  *
3  * @ingroup dspFunctionLib
4  *
5  * @brief Unit tests for the Jamoma DSP #TTLinearFunction of the #TTFunctionLib
6  *
7  * @details
8  *
9  * @authors Nils Peters, Trond Lossius
10  *
11  * @copyright Copyright © 2011 by Nils Peters @n
12  * This code is licensed under the terms of the "New BSD License" @n
13  * http://creativecommons.org/licenses/BSD/
14  */
15 
16 
17 #include "TTFunction.h"
18 #include "TTLinearFunction.h"
19 
20 
21 /*
22  * coefficients calculated in Matlab using:
23 
24  x = linspace(0,1,128);
25  printf("%.16e,\n", x)
26 
27  */
28 
30 {
31  int errorCount = 0;
32  int testAssertionCount = 0;
33  int badSampleCount = 0;
34  TTAudioSignalPtr input = NULL;
35  TTAudioSignalPtr output = NULL;
36  int N = 128;
37  TTValue v;
38 
39 
40 TTFloat64 expectedSignalTest1[128] = {
41  0.0000000000000000e+00,
42  7.8740157480314960e-03,
43  1.5748031496062992e-02,
44  2.3622047244094488e-02,
45  3.1496062992125984e-02,
46  3.9370078740157480e-02,
47  4.7244094488188976e-02,
48  5.5118110236220472e-02,
49  6.2992125984251968e-02,
50  7.0866141732283464e-02,
51  7.8740157480314960e-02,
52  8.6614173228346455e-02,
53  9.4488188976377951e-02,
54  1.0236220472440945e-01,
55  1.1023622047244094e-01,
56  1.1811023622047244e-01,
57  1.2598425196850394e-01,
58  1.3385826771653545e-01,
59  1.4173228346456693e-01,
60  1.4960629921259844e-01,
61  1.5748031496062992e-01,
62  1.6535433070866143e-01,
63  1.7322834645669291e-01,
64  1.8110236220472442e-01,
65  1.8897637795275590e-01,
66  1.9685039370078741e-01,
67  2.0472440944881889e-01,
68  2.1259842519685040e-01,
69  2.2047244094488189e-01,
70  2.2834645669291340e-01,
71  2.3622047244094488e-01,
72  2.4409448818897639e-01,
73  2.5196850393700787e-01,
74  2.5984251968503935e-01,
75  2.6771653543307089e-01,
76  2.7559055118110237e-01,
77  2.8346456692913385e-01,
78  2.9133858267716534e-01,
79  2.9921259842519687e-01,
80  3.0708661417322836e-01,
81  3.1496062992125984e-01,
82  3.2283464566929132e-01,
83  3.3070866141732286e-01,
84  3.3858267716535434e-01,
85  3.4645669291338582e-01,
86  3.5433070866141730e-01,
87  3.6220472440944884e-01,
88  3.7007874015748032e-01,
89  3.7795275590551181e-01,
90  3.8582677165354329e-01,
91  3.9370078740157483e-01,
92  4.0157480314960631e-01,
93  4.0944881889763779e-01,
94  4.1732283464566927e-01,
95  4.2519685039370081e-01,
96  4.3307086614173229e-01,
97  4.4094488188976377e-01,
98  4.4881889763779526e-01,
99  4.5669291338582679e-01,
100  4.6456692913385828e-01,
101  4.7244094488188976e-01,
102  4.8031496062992124e-01,
103  4.8818897637795278e-01,
104  4.9606299212598426e-01,
105  5.0393700787401574e-01,
106  5.1181102362204722e-01,
107  5.1968503937007871e-01,
108  5.2755905511811019e-01,
109  5.3543307086614178e-01,
110  5.4330708661417326e-01,
111  5.5118110236220474e-01,
112  5.5905511811023623e-01,
113  5.6692913385826771e-01,
114  5.7480314960629919e-01,
115  5.8267716535433067e-01,
116  5.9055118110236215e-01,
117  5.9842519685039375e-01,
118  6.0629921259842523e-01,
119  6.1417322834645671e-01,
120  6.2204724409448819e-01,
121  6.2992125984251968e-01,
122  6.3779527559055116e-01,
123  6.4566929133858264e-01,
124  6.5354330708661412e-01,
125  6.6141732283464572e-01,
126  6.6929133858267720e-01,
127  6.7716535433070868e-01,
128  6.8503937007874016e-01,
129  6.9291338582677164e-01,
130  7.0078740157480313e-01,
131  7.0866141732283461e-01,
132  7.1653543307086609e-01,
133  7.2440944881889768e-01,
134  7.3228346456692917e-01,
135  7.4015748031496065e-01,
136  7.4803149606299213e-01,
137  7.5590551181102361e-01,
138  7.6377952755905509e-01,
139  7.7165354330708658e-01,
140  7.7952755905511806e-01,
141  7.8740157480314965e-01,
142  7.9527559055118113e-01,
143  8.0314960629921262e-01,
144  8.1102362204724410e-01,
145  8.1889763779527558e-01,
146  8.2677165354330706e-01,
147  8.3464566929133854e-01,
148  8.4251968503937003e-01,
149  8.5039370078740162e-01,
150  8.5826771653543310e-01,
151  8.6614173228346458e-01,
152  8.7401574803149606e-01,
153  8.8188976377952755e-01,
154  8.8976377952755903e-01,
155  8.9763779527559051e-01,
156  9.0551181102362199e-01,
157  9.1338582677165359e-01,
158  9.2125984251968507e-01,
159  9.2913385826771655e-01,
160  9.3700787401574803e-01,
161  9.4488188976377951e-01,
162  9.5275590551181100e-01,
163  9.6062992125984248e-01,
164  9.6850393700787396e-01,
165  9.7637795275590555e-01,
166  9.8425196850393704e-01,
167  9.9212598425196852e-01,
168  1.0000000000000000e+00
169 };
170 
171 
172  // setup Function
173  this->setAttributeValue(TT("function"), TT("linear"));
174 
175  // create 1 channel audio signal objects
176  TTObjectBaseInstantiate(kTTSym_audiosignal, &input, 1);
177  TTObjectBaseInstantiate(kTTSym_audiosignal, &output, 1);
178  input->allocWithVectorSize(N);
179  output->allocWithVectorSize(N);
180 
181  // create a signal to be transformed and then process it)
182  input->clear();
183  for (int i=0; i<N; i++)
184  input->mSampleVectors[0][i] = expectedSignalTest1[i];
185 
186  this->process(input, output);
187 
188  // now test the output
189  for (int n=0; n<N; n++)
190  {
191  TTBoolean result = !TTTestFloatEquivalence(output->mSampleVectors[0][n], expectedSignalTest1[n]);
192  badSampleCount += result;
193  if (result)
194  TTTestLog("BAD SAMPLE @ n=%i ( value=%.10f expected=%.10f )", n, output->mSampleVectors[0][n], expectedSignalTest1[n]);
195  }
196 
197  TTTestAssertion("Produces correct function values",
198  badSampleCount == 0,
199  testAssertionCount,
200  errorCount);
201  if (badSampleCount)
202  TTTestLog("badSampleCount is %i", badSampleCount);
203 
204 
205  TTObjectBaseRelease(&input);
206  TTObjectBaseRelease(&output);
207 
208  // wrap up test results and pass back to whoever called test
209  return TTTestFinish(testAssertionCount, errorCount, returnedTestInfo);
210 
211 }
bool TTBoolean
Boolean flag, same as Boolean on the Mac.
Definition: TTBase.h:167
TTErr TTObjectBaseRelease(TTObjectBasePtr *anObject)
DEPRECATED.
TTLinearFunction Unit for Jamoms DSP
TTErr setAttributeValue(const TTSymbol name, TTValue &value)
Set an attribute value for an object.
double TTFloat64
64 bit floating point number
Definition: TTBase.h:188
#define TT
This macro is defined as a shortcut for doing a lookup in the symbol table.
Definition: TTSymbol.h:155
TTErr clear()
Zero out all of the sample values in the audio signal.
TTErr TTObjectBaseInstantiate(const TTSymbol className, TTObjectBasePtr *returnedObjectPtr, const TTValue arguments)
DEPRECATED.
The TTAudioSignal class represents N vectors of audio samples for M channels.
Definition: TTAudioSignal.h:57
TTSampleValue ** mSampleVectors
An array of pointers to the first sample in each vector. Declared Public for fast access...
Definition: TTAudioSignal.h:74
virtual TTErr test(TTValue &returnedTestInfo)
Unit Tests.
TTErr
Jamoma Error Codes Enumeration of error codes that might be returned by any of the TTBlue functions a...
Definition: TTBase.h:342
TTFunction is a generalized function wrapper for Jamoma DSP
TTErr allocWithVectorSize(const TTUInt16 newVectorSize)
Allocate memory for all channels at the specified vectorsize, if the vectorsize is different from the...
[doxygenAppendixC_copyExample]
Definition: TTValue.h:34