1 /*
2 * Copyright (C) 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 // Play a shared stream that might use MMAP.
18 // Then play a second stream at a different sample rate.
19 // Make sure the first stream is still running.
20 // See: b/73369112 | AAudio disconnects shared stream if second MMAP open fails
21
22 #include <memory.h>
23 #include <stdio.h>
24 #include <unistd.h>
25
26 #include <android-base/macros.h>
27 #include <aaudio/AAudio.h>
28
29 #include <gtest/gtest.h>
30
31 // Callback function that fills the audio output buffer.
MyDataCallbackProc(AAudioStream * stream,void * userData,void * audioData,int32_t numFrames)32 aaudio_data_callback_result_t MyDataCallbackProc(
33 AAudioStream *stream,
34 void *userData,
35 void *audioData,
36 int32_t numFrames) {
37 (void) userData;
38 int32_t numSamples = AAudioStream_getChannelCount(stream) * numFrames;
39 aaudio_format_t format = AAudioStream_getFormat(stream);
40 if (format == AAUDIO_FORMAT_PCM_I16) {
41 memset(audioData, 0, numSamples * sizeof(int16_t));
42 } else if (format == AAUDIO_FORMAT_PCM_FLOAT) {
43 memset(audioData, 0, numSamples * sizeof(float));
44 }
45 return AAUDIO_CALLBACK_RESULT_CONTINUE;
46 }
47
48 //void foo() { // for tricking the Android Studio formatter
TEST(test_interference,aaudio_mmap_interference)49 TEST(test_interference, aaudio_mmap_interference) {
50
51 AAudioStreamBuilder *aaudioBuilder = nullptr;
52 AAudioStream *aaudioStream1 = nullptr;
53 AAudioStream *aaudioStream2 = nullptr;
54
55 // Use an AAudioStreamBuilder to contain requested parameters.
56 ASSERT_EQ(AAUDIO_OK, AAudio_createStreamBuilder(&aaudioBuilder));
57
58 // Request stream properties.
59 AAudioStreamBuilder_setSampleRate(aaudioBuilder, 48000);
60 AAudioStreamBuilder_setDataCallback(aaudioBuilder, MyDataCallbackProc, nullptr);
61 AAudioStreamBuilder_setPerformanceMode(aaudioBuilder, AAUDIO_PERFORMANCE_MODE_LOW_LATENCY);
62
63 // Create an AAudioStream using the Builder.
64 ASSERT_EQ(AAUDIO_OK, AAudioStreamBuilder_openStream(aaudioBuilder, &aaudioStream1));
65 // Start it running.
66 ASSERT_EQ(AAUDIO_OK, AAudioStream_requestStart(aaudioStream1));
67
68 // Verify that the stream is running.
69 sleep(1);
70 EXPECT_LT(0, AAudioStream_getFramesRead(aaudioStream1));
71 ASSERT_EQ(AAUDIO_STREAM_STATE_STARTED, AAudioStream_getState(aaudioStream1));
72
73 // Now try to open a second stream with a different rate.
74 AAudioStreamBuilder_setSampleRate(aaudioBuilder, 44100);
75 ASSERT_EQ(AAUDIO_OK, AAudioStreamBuilder_openStream(aaudioBuilder, &aaudioStream2));
76 ASSERT_EQ(AAUDIO_OK, AAudioStream_requestStart(aaudioStream2));
77
78 // Verify that the second stream is running.
79 sleep(1);
80 EXPECT_LT(0, AAudioStream_getFramesRead(aaudioStream2));
81
82 EXPECT_EQ(AAUDIO_STREAM_STATE_STARTED, AAudioStream_getState(aaudioStream2));
83
84 // Now verify that the first stream is still running.
85 EXPECT_EQ(AAUDIO_STREAM_STATE_STARTED, AAudioStream_getState(aaudioStream1));
86
87 int32_t framesRead1_1 = AAudioStream_getFramesRead(aaudioStream1);
88 EXPECT_LT(0, framesRead1_1);
89 sleep(1);
90 int32_t framesRead1_2 = AAudioStream_getFramesRead(aaudioStream1);
91 EXPECT_LT(0, framesRead1_2);
92 EXPECT_LT(framesRead1_1, framesRead1_2); // advancing?
93
94 AAudioStream_close(aaudioStream2);
95 AAudioStream_close(aaudioStream1);
96 AAudioStreamBuilder_delete(aaudioBuilder);
97 }
98