1 /*
2 * Copyright 2017 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 //#define LOG_NDEBUG 0
18 #define LOG_TAG "audio_utils_powerlog_tests"
19
20 #include <audio_utils/PowerLog.h>
21 #include <gtest/gtest.h>
22 #include <iostream>
23 #include <log/log.h>
24
25 using namespace android;
26
countNewLines(const std::string & s)27 static size_t countNewLines(const std::string &s) {
28 return std::count(s.begin(), s.end(), '\n');
29 }
30
TEST(audio_utils_powerlog,basic)31 TEST(audio_utils_powerlog, basic) {
32 auto plog = std::make_unique<PowerLog>(
33 48000 /* sampleRate */,
34 1 /* channelCount */,
35 AUDIO_FORMAT_PCM_16_BIT,
36 100 /* entries */,
37 1 /* framesPerEntry */);
38
39 // header
40 EXPECT_EQ((size_t)1, countNewLines(plog->dumpToString()));
41
42 const int16_t zero = 0;
43 const int16_t half = 0x4000;
44
45 plog->log(&half, 1 /* frame */, 0 /* nowNs */);
46 plog->log(&half, 1 /* frame */, 1 /* nowNs */);
47 plog->log(&half, 1 /* frame */, 2 /* nowNs */);
48
49 // one line / signal
50 EXPECT_EQ((size_t)2, countNewLines(plog->dumpToString()));
51
52 plog->log(&zero, 1 /* frame */, 3 /* nowNs */);
53 // zero termination doesn't change this.
54 EXPECT_EQ((size_t)2, countNewLines(plog->dumpToString()));
55
56 // but adding next line does.
57 plog->log(&half, 1 /* frame */, 4 /* nowNs */);
58 EXPECT_EQ((size_t)3, countNewLines(plog->dumpToString()));
59
60 // truncating on lines
61 EXPECT_EQ((size_t)2, countNewLines(plog->dumpToString(
62 "" /* prefix */, 2 /* lines */)));
63
64 // truncating on time
65 EXPECT_EQ((size_t)3, countNewLines(plog->dumpToString(
66 "" /* prefix */, 0 /* lines */, 2 /* limitNs */)));
67 EXPECT_EQ((size_t)2, countNewLines(plog->dumpToString(
68 "" /* prefix */, 0 /* lines */, 3 /* limitNs */)));
69 plog->dump(0 /* fd (stdout) */);
70
71 // The output below depends on the local time zone.
72 // The indentation below is exact, check alignment.
73 /*
74 Signal power history:
75 12-31 16:00:00.000: [ -6.0 -6.0 -6.0 ] sum(-1.2)
76 12-31 16:00:00.000: [ -6.0
77 */
78 }
79
TEST(audio_utils_powerlog,c)80 TEST(audio_utils_powerlog, c) {
81 power_log_t *power_log = power_log_create(
82 48000 /* sample_rate */,
83 1 /* channel_count */,
84 AUDIO_FORMAT_PCM_16_BIT,
85 100 /* entries */,
86 1 /* frames_per_entry */);
87
88 // sanity test
89 const int16_t zero = 0;
90 const int16_t quarter = 0x2000;
91
92 power_log_log(power_log, &quarter, 1 /* frame */, 0 /* now_ns */);
93 power_log_log(power_log, &zero, 1 /* frame */, 1 /* now_ns */);
94 power_log_dump(power_log, 0 /* fd */, " " /* prefix */, 0 /* lines */, 0 /* limit_ns */);
95 power_log_destroy(power_log);
96
97 // This has a 2 character prefix offset from the previous test when dumping.
98 // The indentation below is exact, check alignment.
99 /*
100 Signal power history:
101 12-31 16:00:00.000: [ -12.0 ] sum(-12.0)
102 */
103 }
104