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
testMaxStreams(aaudio_direction_t direction)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
main(int argc,char ** argv)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