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. 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 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
