engine.c revision 711332800108ad6e0e594796e5f8db0da3eff402 
1/*
2 * Copyright (C) 2010 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#include "SLES/OpenSLES.h"
18#include "SLES/OpenSLESUT.h"
19#include <assert.h>
20#include <stdio.h>
21#include <stdlib.h>
22#include <string.h>
23
24int main(int argc, char **argv)
25{
26    printf("Get number of available engine interfaces\n");
27    SLresult result;
28    SLuint32 numSupportedInterfaces = 12345;
29    result = slQueryNumSupportedEngineInterfaces(&numSupportedInterfaces);
30    assert(SL_RESULT_SUCCESS == result);
31    printf("Engine number of supported interfaces %lu\n", numSupportedInterfaces);
32    SLInterfaceID *engine_ids = calloc(numSupportedInterfaces, sizeof(SLInterfaceID));
33    assert(engine_ids != NULL);
34    SLboolean *engine_req = calloc(numSupportedInterfaces, sizeof(SLboolean));
35    assert(engine_req != NULL);
36    printf("Display the ID of each available interface\n");
37    SLuint32 index;
38    for (index = 0; index < numSupportedInterfaces + 1; ++index) {
39        SLInterfaceID interfaceID;
40        memset(&interfaceID, 0x55, sizeof(interfaceID));
41        result = slQuerySupportedEngineInterfaces(index, &interfaceID);
42        if (index < numSupportedInterfaces) {
43            assert(SL_RESULT_SUCCESS == result);
44            printf("interface[%lu] ", index);
45            slesutPrintIID(interfaceID);
46            engine_ids[index] = interfaceID;
47            engine_req[index] = SL_BOOLEAN_TRUE;
48        } else {
49            assert(SL_RESULT_PARAMETER_INVALID == result);
50        }
51    }
52    printf("Create an engine and request all available interfaces\n");
53    SLObjectItf engineObject;
54    result = slCreateEngine(&engineObject, 0, NULL, numSupportedInterfaces, engine_ids, engine_req);
55    assert(SL_RESULT_SUCCESS == result);
56    printf("Engine object %p\n", engineObject);
57    printf("Get each available interface before realization\n");
58    for (index = 0; index < numSupportedInterfaces; ++index) {
59        void *interface = NULL;
60        // Use the interface ID as returned by slQuerySupportedEngineInterfaces
61        result = (*engineObject)->GetInterface(engineObject, engine_ids[index], &interface);
62        assert(SL_RESULT_SUCCESS == result || SL_RESULT_PRECONDITIONS_VIOLATED == result);
63        if (SL_RESULT_SUCCESS == result) {
64            printf("interface available pre-realize: ");
65            slesutPrintIID(engine_ids[index]);
66        }
67    }
68    printf("Destroy engine before realization\n");
69    (*engineObject)->Destroy(engineObject);
70    printf("Create engine again\n");
71    result = slCreateEngine(&engineObject, 0, NULL, numSupportedInterfaces, engine_ids, engine_req);
72    assert(SL_RESULT_SUCCESS == result);
73    printf("Engine object %p\n", engineObject);
74    printf("Realize the engine\n");
75    result = (*engineObject)->Realize(engineObject, SL_BOOLEAN_FALSE);
76    assert(SL_RESULT_SUCCESS == result);
77    printf("Get each available interface after realization\n");
78    for (index = 0; index < numSupportedInterfaces; ++index) {
79        void *interface = NULL;
80        result = (*engineObject)->GetInterface(engineObject, engine_ids[index], &interface);
81        assert(SL_RESULT_SUCCESS == result);
82        printf("interface[%lu] %p\n", index, interface);
83        // Use a copy of the interface ID to make sure lookup is not purely relying on address
84        void *interface_again = NULL;
85        struct SLInterfaceID_ copy = *engine_ids[index];
86        result = (*engineObject)->GetInterface(engineObject, &copy, &interface_again);
87        assert(SL_RESULT_SUCCESS == result);
88        // Calling GetInterface multiple times should return the same interface
89        assert(interface_again == interface);
90    }
91    printf("Create too many engines\n");
92    SLObjectItf engineObject2;
93    result = slCreateEngine(&engineObject2, 0, NULL, 0, NULL, NULL);
94    assert(SL_RESULT_RESOURCE_ERROR == result);
95    assert(NULL == engineObject2);
96    printf("Destroy engine\n");
97    (*engineObject)->Destroy(engineObject);
98    printf("Now should be able to create another engine\n");
99    result = slCreateEngine(&engineObject2, 0, NULL, 0, NULL, NULL);
100    assert(SL_RESULT_SUCCESS == result);
101    printf("Exit without destroying engine -- examine log for expected error message\n");
102    return EXIT_SUCCESS;
103}
104