1 /* 2 * Copyright (C) 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 #ifndef AAUDIO_EXAMPLE_UTILS_H 18 #define AAUDIO_EXAMPLE_UTILS_H 19 20 #include <unistd.h> 21 #include <sched.h> 22 #include <aaudio/AAudio.h> 23 24 #define NANOS_PER_MICROSECOND ((int64_t)1000) 25 #define NANOS_PER_MILLISECOND (NANOS_PER_MICROSECOND * 1000) 26 #define NANOS_PER_SECOND (NANOS_PER_MILLISECOND * 1000) 27 getSharingModeText(aaudio_sharing_mode_t mode)28static const char *getSharingModeText(aaudio_sharing_mode_t mode) { 29 const char *modeText = "unknown"; 30 switch (mode) { 31 case AAUDIO_SHARING_MODE_EXCLUSIVE: 32 modeText = "EXCLUSIVE"; 33 break; 34 case AAUDIO_SHARING_MODE_SHARED: 35 modeText = "SHARED"; 36 break; 37 default: 38 break; 39 } 40 return modeText; 41 } 42 43 static int64_t getNanoseconds(clockid_t clockId = CLOCK_MONOTONIC) { 44 struct timespec time; 45 int result = clock_gettime(clockId, &time); 46 if (result < 0) { 47 return -errno; 48 } 49 return (time.tv_sec * NANOS_PER_SECOND) + time.tv_nsec; 50 } 51 displayPeakLevel(float peakLevel)52void displayPeakLevel(float peakLevel) { 53 printf("%5.3f ", peakLevel); 54 const int maxStars = 50; // arbitrary, fits on one line 55 int numStars = (int) (peakLevel * maxStars); 56 for (int i = 0; i < numStars; i++) { 57 printf("*"); 58 } 59 printf("\n"); 60 } 61 62 #endif // AAUDIO_EXAMPLE_UTILS_H 63