1 /*
2 * Copyright 2018 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 /*
18 * Test FlowGraph
19 */
20
21 #include "stdio.h"
22
23 #include <iostream>
24
25 #include <gtest/gtest.h>
26 #include <oboe/Oboe.h>
27
28 #include "flowgraph/ClipToRange.h"
29 #include "flowgraph/MonoToMultiConverter.h"
30 #include "flowgraph/SourceFloat.h"
31 #include "flowgraph/RampLinear.h"
32 #include "flowgraph/SampleRateConverter.h"
33 #include "flowgraph/SinkFloat.h"
34 #include "flowgraph/SinkI16.h"
35 #include "flowgraph/SinkI24.h"
36 #include "flowgraph/SourceI16.h"
37 #include "flowgraph/SourceI24.h"
38
39 using namespace oboe::flowgraph;
40
41 constexpr int kBytesPerI24Packed = 3;
42
TEST(test_flowgraph,module_sinki16)43 TEST(test_flowgraph, module_sinki16) {
44 static const float input[] = {1.0f, 0.5f, -0.25f, -1.0f, 0.0f, 53.9f, -87.2f};
45 static const int16_t expected[] = {32767, 16384, -8192, -32768, 0, 32767, -32768};
46 int16_t output[20];
47 SourceFloat sourceFloat{1};
48 SinkI16 sinkI16{1};
49
50 int numInputFrames = sizeof(input) / sizeof(input[0]);
51 sourceFloat.setData(input, numInputFrames);
52 sourceFloat.output.connect(&sinkI16.input);
53
54 int numOutputFrames = sizeof(output) / sizeof(int16_t);
55 int32_t numRead = sinkI16.read(output, numOutputFrames);
56 ASSERT_EQ(numInputFrames, numRead);
57 for (int i = 0; i < numRead; i++) {
58 EXPECT_EQ(expected[i], output[i]);
59 }
60 }
61
TEST(test_flowgraph,module_mono_to_stereo)62 TEST(test_flowgraph, module_mono_to_stereo) {
63 static const float input[] = {1.0f, 2.0f, 3.0f};
64 float output[100] = {};
65 SourceFloat sourceFloat{1};
66 MonoToMultiConverter monoToStereo{2};
67 SinkFloat sinkFloat{2};
68
69 sourceFloat.setData(input, 3);
70
71 sourceFloat.output.connect(&monoToStereo.input);
72 monoToStereo.output.connect(&sinkFloat.input);
73
74 int32_t numRead = sinkFloat.read(output, 8);
75 ASSERT_EQ(3, numRead);
76 EXPECT_EQ(input[0], output[0]);
77 EXPECT_EQ(input[0], output[1]);
78 EXPECT_EQ(input[1], output[2]);
79 EXPECT_EQ(input[1], output[3]);
80 }
81
TEST(test_flowgraph,module_ramp_linear)82 TEST(test_flowgraph, module_ramp_linear) {
83 constexpr int rampSize = 5;
84 constexpr int numOutput = 100;
85 constexpr float value = 1.0f;
86 constexpr float target = 100.0f;
87 float output[numOutput] = {};
88 RampLinear rampLinear{1};
89 SinkFloat sinkFloat{1};
90
91 rampLinear.input.setValue(value);
92 rampLinear.setLengthInFrames(rampSize);
93 rampLinear.setTarget(target);
94 rampLinear.forceCurrent(0.0f);
95
96 rampLinear.output.connect(&sinkFloat.input);
97
98 int32_t numRead = sinkFloat.read(output, numOutput);
99 ASSERT_EQ(numOutput, numRead);
100 constexpr float tolerance = 0.0001f; // arbitrary
101 int i = 0;
102 for (; i < rampSize; i++) {
103 float expected = i * value * target / rampSize;
104 EXPECT_NEAR(expected, output[i], tolerance);
105 }
106 for (; i < numOutput; i++) {
107 float expected = value * target;
108 EXPECT_NEAR(expected, output[i], tolerance);
109 }
110 }
111
112 // It is easiest to represent packed 24-bit data as a byte array.
113 // This test will read from input, convert to float, then write
114 // back to output as bytes.
TEST(test_flowgraph,module_packed_24)115 TEST(test_flowgraph, module_packed_24) {
116 static const uint8_t input[] = {0x01, 0x23, 0x45,
117 0x67, 0x89, 0xAB,
118 0xCD, 0xEF, 0x5A};
119 uint8_t output[99] = {};
120 SourceI24 sourceI24{1};
121 SinkI24 sinkI24{1};
122
123 int numInputFrames = sizeof(input) / kBytesPerI24Packed;
124 sourceI24.setData(input, numInputFrames);
125 sourceI24.output.connect(&sinkI24.input);
126
127 int32_t numRead = sinkI24.read(output, sizeof(output) / kBytesPerI24Packed);
128 ASSERT_EQ(numInputFrames, numRead);
129 for (size_t i = 0; i < sizeof(input); i++) {
130 EXPECT_EQ(input[i], output[i]);
131 }
132 }
133
TEST(test_flowgraph,module_clip_to_range)134 TEST(test_flowgraph, module_clip_to_range) {
135 constexpr float myMin = -2.0f;
136 constexpr float myMax = 1.5f;
137
138 static const float input[] = {-9.7, 0.5f, -0.25, 1.0f, 12.3};
139 static const float expected[] = {myMin, 0.5f, -0.25, 1.0f, myMax};
140 float output[100];
141 SourceFloat sourceFloat{1};
142 ClipToRange clipper{1};
143 SinkFloat sinkFloat{1};
144
145 int numInputFrames = sizeof(input) / sizeof(input[0]);
146 sourceFloat.setData(input, numInputFrames);
147
148 clipper.setMinimum(myMin);
149 clipper.setMaximum(myMax);
150
151 sourceFloat.output.connect(&clipper.input);
152 clipper.output.connect(&sinkFloat.input);
153
154 int numOutputFrames = sizeof(output) / sizeof(output[0]);
155 int32_t numRead = sinkFloat.read(output, numOutputFrames);
156 ASSERT_EQ(numInputFrames, numRead);
157 constexpr float tolerance = 0.000001f; // arbitrary
158 for (int i = 0; i < numRead; i++) {
159 EXPECT_NEAR(expected[i], output[i], tolerance);
160 }
161 }
162
163