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 // Try to create as many streams as possible and report the maximum. 18 19 #include <stdio.h> 20 #include <stdlib.h> 21 #include <aaudio/AAudio.h> 22 #include <aaudio/AAudioTesting.h> 23 24 //#define MMAP_POLICY AAUDIO_UNSPECIFIED 25 //#define MMAP_POLICY AAUDIO_POLICY_NEVER 26 #define MMAP_POLICY AAUDIO_POLICY_AUTO 27 //#define MMAP_POLICY AAUDIO_POLICY_ALWAYS 28 29 #define MAX_STREAMS 200 30 31 aaudio_result_t testMaxStreams(aaudio_direction_t direction) { 32 aaudio_result_t result = AAUDIO_OK; 33 AAudioStreamBuilder *aaudioBuilder = nullptr; 34 AAudioStream *aaudioStreams[MAX_STREAMS]; 35 int32_t numStreams = 0; 36 37 result = AAudio_createStreamBuilder(&aaudioBuilder); 38 if (result != AAUDIO_OK) { 39 return 1; 40 } 41 42 AAudioStreamBuilder_setDirection(aaudioBuilder, direction); 43 44 for (int i = 0; i < MAX_STREAMS; i++) { 45 // Create an AAudioStream using the Builder. 46 result = AAudioStreamBuilder_openStream(aaudioBuilder, &aaudioStreams[i]); 47 if (result != AAUDIO_OK) { 48 printf("ERROR could not open AAudio stream, %d %s\n", 49 result, AAudio_convertResultToText(result)); 50 break; 51 } else { 52 printf("AAudio stream[%2d] opened successfully. MMAP = %s\n", 53 i, AAudioStream_isMMapUsed(aaudioStreams[i]) ? "YES" : "NO"); 54 numStreams++; 55 } 56 } 57 58 printf("Created %d streams!\n", numStreams); 59 60 // Close all the streams. 61 for (int i = 0; i < numStreams; i++) { 62 result = AAudioStream_close(aaudioStreams[i]); 63 if (result != AAUDIO_OK) { 64 printf("ERROR could not close AAudio stream, %d %s\n", 65 result, AAudio_convertResultToText(result)); 66 break; 67 } else { 68 printf("AAudio stream[%2d] closed successfully.\n", i); 69 } 70 } 71 72 AAudioStreamBuilder_delete(aaudioBuilder); 73 74 return result; 75 } 76 77 int main(int argc, char **argv) { 78 (void)argc; // unused 79 (void)argv; // unused 80 81 // Make printf print immediately so that debug info is not stuck 82 // in a buffer if we hang or crash. 83 setvbuf(stdout, NULL, _IONBF, (size_t) 0); 84 85 printf("Try to open a maximum of %d streams.\n", MAX_STREAMS); 86 87 AAudio_setMMapPolicy(MMAP_POLICY); 88 printf("requested MMapPolicy = %d\n", AAudio_getMMapPolicy()); 89 90 printf("Test AAUDIO_DIRECTION_OUTPUT ---------\n"); 91 aaudio_result_t result = testMaxStreams(AAUDIO_DIRECTION_OUTPUT); 92 if (result == AAUDIO_OK) { 93 printf("Test AAUDIO_DIRECTION_INPUT ---------\n"); 94 result = testMaxStreams(AAUDIO_DIRECTION_INPUT); 95 } 96 97 return (result != AAUDIO_OK) ? EXIT_FAILURE : EXIT_SUCCESS; 98 } 99
