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/*
18 * Copyright (c) 2009 The Khronos Group Inc.
19 *
20 * Permission is hereby granted, free of charge, to any person obtaining a copy of this
21 * software and /or associated documentation files (the "Materials "), to deal in the
22 * Materials without restriction, including without limitation the rights to use, copy,
23 * modify, merge, publish, distribute, sublicense, and/or sell copies of the Materials,
24 * and to permit persons to whom the Materials are furnished to do so, subject to
25 * the following conditions:
26 *
27 * The above copyright notice and this permission notice shall be included
28 * in all copies or substantial portions of the Materials.
29 *
30 * THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
31 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
32 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
33 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
34 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
35 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
36 * CONNECTION WITH THE MATERIALS OR THE USE OR OTHER DEALINGS IN THE
37 * MATERIALS.
38 */
39
40#include <stdlib.h>
41#include <stdio.h>
42//#include <string.h>
43#include <unistd.h>
44//#include <sys/time.h>
45
46#include "SLES/OpenSLES.h"
47
48
49#define MAX_NUMBER_INTERFACES 2
50
51#define PREFETCHEVENT_ERROR_CANDIDATE \
52        (SL_PREFETCHEVENT_STATUSCHANGE | SL_PREFETCHEVENT_FILLLEVELCHANGE)
53
54//-----------------------------------------------------------------
55//* Exits the application if an error is encountered */
56#define CheckErr(x) ExitOnErrorFunc(x,__LINE__)
57
58void ExitOnErrorFunc( SLresult result , int line)
59{
60    if (SL_RESULT_SUCCESS != result) {
61        fprintf(stderr, "%lu error code encountered at line %d, exiting\n", result, line);
62        exit(EXIT_FAILURE);
63    }
64}
65
66bool prefetchError = false;
67
68//-----------------------------------------------------------------
69/* PrefetchStatusItf callback for an audio player */
70void PrefetchEventCallback( SLPrefetchStatusItf caller,  void *pContext, SLuint32 event)
71{
72    SLpermille level = 0;
73    (*caller)->GetFillLevel(caller, &level);
74    SLuint32 status;
75    //fprintf(stdout, "PrefetchEventCallback: received event %lu\n", event);
76    (*caller)->GetPrefetchStatus(caller, &status);
77    if ((PREFETCHEVENT_ERROR_CANDIDATE == (event & PREFETCHEVENT_ERROR_CANDIDATE))
78            && (level == 0) && (status == SL_PREFETCHSTATUS_UNDERFLOW)) {
79        fprintf(stdout, "PrefetchEventCallback: Error while prefetching data, exiting\n");
80        prefetchError = true;
81    }
82    if (event & SL_PREFETCHEVENT_FILLLEVELCHANGE) {
83        fprintf(stdout, "PrefetchEventCallback: Buffer fill level is = %d\n", level);
84    }
85    if (event & SL_PREFETCHEVENT_STATUSCHANGE) {
86        fprintf(stdout, "PrefetchEventCallback: Prefetch Status is = %lu\n", status);
87    }
88
89}
90
91
92//-----------------------------------------------------------------
93
94/* Play some music from a URI  */
95void TestPlayUri( SLObjectItf sl, const char* path)
96{
97    SLEngineItf                EngineItf;
98
99    SLint32                    numOutputs = 0;
100    SLuint32                   deviceID = 0;
101
102    SLresult                   res;
103
104    SLDataSource               audioSource;
105    SLDataLocator_URI          uri;
106    SLDataFormat_MIME          mime;
107
108    SLDataSink                 audioSink;
109    SLDataLocator_OutputMix    locator_outputmix;
110
111    SLObjectItf                player;
112    SLPlayItf                  playItf;
113    SLVolumeItf                volItf;
114    SLPrefetchStatusItf        prefetchItf;
115
116    SLObjectItf                OutputMix;
117
118    SLboolean required[MAX_NUMBER_INTERFACES];
119    SLInterfaceID iidArray[MAX_NUMBER_INTERFACES];
120
121    /* Get the SL Engine Interface which is implicit */
122    res = (*sl)->GetInterface(sl, SL_IID_ENGINE, (void*)&EngineItf);
123    CheckErr(res);
124
125    /* Initialize arrays required[] and iidArray[] */
126    for (int i=0 ; i < MAX_NUMBER_INTERFACES ; i++) {
127        required[i] = SL_BOOLEAN_FALSE;
128        iidArray[i] = SL_IID_NULL;
129    }
130
131    // Set arrays required[] and iidArray[] for VOLUME and PREFETCHSTATUS interface
132    required[0] = SL_BOOLEAN_TRUE;
133    iidArray[0] = SL_IID_VOLUME;
134    required[1] = SL_BOOLEAN_TRUE;
135    iidArray[1] = SL_IID_PREFETCHSTATUS;
136    // Create Output Mix object to be used by player
137    res = (*EngineItf)->CreateOutputMix(EngineItf, &OutputMix, 0,
138            iidArray, required); CheckErr(res);
139
140    // Realizing the Output Mix object in synchronous mode.
141    res = (*OutputMix)->Realize(OutputMix, SL_BOOLEAN_FALSE);
142    CheckErr(res);
143
144    /* Setup the data source structure for the URI */
145    uri.locatorType = SL_DATALOCATOR_URI;
146    uri.URI         =  (SLchar*) path;
147    mime.formatType    = SL_DATAFORMAT_MIME;
148    mime.mimeType      = (SLchar*)NULL;
149    mime.containerType = SL_CONTAINERTYPE_UNSPECIFIED;
150
151    audioSource.pFormat      = (void *)&mime;
152    audioSource.pLocator     = (void *)&uri;
153
154    /* Setup the data sink structure */
155    locator_outputmix.locatorType   = SL_DATALOCATOR_OUTPUTMIX;
156    locator_outputmix.outputMix    = OutputMix;
157    audioSink.pLocator           = (void *)&locator_outputmix;
158    audioSink.pFormat            = NULL;
159
160    /* Create the audio player */
161    res = (*EngineItf)->CreateAudioPlayer(EngineItf, &player, &audioSource, &audioSink,
162            MAX_NUMBER_INTERFACES, iidArray, required); CheckErr(res);
163
164    /* Realizing the player in synchronous mode. */
165    res = (*player)->Realize(player, SL_BOOLEAN_FALSE); CheckErr(res);
166    fprintf(stdout, "URI example: after Realize\n");
167
168    /* Get interfaces */
169    res = (*player)->GetInterface(player, SL_IID_PLAY, (void*)&playItf);
170    CheckErr(res);
171
172    res = (*player)->GetInterface(player, SL_IID_VOLUME,  (void*)&volItf);
173    CheckErr(res);
174
175    res = (*player)->GetInterface(player, SL_IID_PREFETCHSTATUS, (void*)&prefetchItf);
176    CheckErr(res);
177    res = (*prefetchItf)->RegisterCallback(prefetchItf, PrefetchEventCallback, &prefetchItf);
178    CheckErr(res);
179    res = (*prefetchItf)->SetCallbackEventsMask(prefetchItf,
180            SL_PREFETCHEVENT_FILLLEVELCHANGE | SL_PREFETCHEVENT_STATUSCHANGE);
181    CheckErr(res);
182
183    /* Configure fill level updates every 5 percent */
184    (*prefetchItf)->SetFillUpdatePeriod(prefetchItf, 50);
185
186    /* Display duration */
187    SLmillisecond durationInMsec = SL_TIME_UNKNOWN;
188    res = (*playItf)->GetDuration(playItf, &durationInMsec);
189    CheckErr(res);
190    if (durationInMsec == SL_TIME_UNKNOWN) {
191        fprintf(stdout, "Content duration is unknown (before starting to prefetch)\n");
192    } else {
193        fprintf(stdout, "Content duration is %lu ms (before starting to prefetch)\n",
194                durationInMsec);
195    }
196
197    /* Set the player volume */
198    res = (*volItf)->SetVolumeLevel( volItf, -300);
199    CheckErr(res);
200
201    /* Play the URI */
202    /*     first cause the player to prefetch the data */
203    fprintf(stdout, "Before set to PAUSED\n");
204    res = (*playItf)->SetPlayState( playItf, SL_PLAYSTATE_PAUSED );
205    fprintf(stdout, "After set to PAUSED\n");
206    CheckErr(res);
207
208    /*     wait until there's data to play */
209    //SLpermille fillLevel = 0;
210    SLuint32 prefetchStatus = SL_PREFETCHSTATUS_UNDERFLOW;
211    SLuint32 timeOutIndex = 100; // 10s
212    while ((prefetchStatus != SL_PREFETCHSTATUS_SUFFICIENTDATA) && (timeOutIndex > 0) &&
213            !prefetchError) {
214        usleep(100 * 1000);
215        (*prefetchItf)->GetPrefetchStatus(prefetchItf, &prefetchStatus);
216        timeOutIndex--;
217    }
218
219    if (timeOutIndex == 0 || prefetchError) {
220        fprintf(stderr, "We\'re done waiting, failed to prefetch data in time, exiting\n");
221        goto destroyRes;
222    }
223
224    /* Display duration again, */
225    res = (*playItf)->GetDuration(playItf, &durationInMsec);
226    CheckErr(res);
227    if (durationInMsec == SL_TIME_UNKNOWN) {
228        fprintf(stdout, "Content duration is unknown (after prefetch completed)\n");
229    } else {
230        fprintf(stdout, "Content duration is %lu ms (after prefetch completed)\n", durationInMsec);
231    }
232
233    fprintf(stdout, "URI example: starting to play\n");
234    res = (*playItf)->SetPlayState( playItf, SL_PLAYSTATE_PLAYING );
235    CheckErr(res);
236
237    /* Wait as long as the duration of the content before stopping */
238    usleep(durationInMsec * 1000);
239
240    /* Make sure player is stopped */
241    fprintf(stdout, "URI example: stopping playback\n");
242    res = (*playItf)->SetPlayState(playItf, SL_PLAYSTATE_STOPPED);
243    CheckErr(res);
244
245destroyRes:
246
247    /* Destroy the player */
248    (*player)->Destroy(player);
249
250    /* Destroy Output Mix object */
251    (*OutputMix)->Destroy(OutputMix);
252}
253
254//-----------------------------------------------------------------
255int main(int argc, char* const argv[])
256{
257    SLresult    res;
258    SLObjectItf sl;
259
260    fprintf(stdout, "OpenSL ES test %s: exercises SLPlayItf, SLVolumeItf ", argv[0]);
261    fprintf(stdout, "and AudioPlayer with SLDataLocator_URI source / OutputMix sink\n");
262    fprintf(stdout, "Plays a sound and stops after its reported duration\n\n");
263
264    if (argc == 1) {
265        fprintf(stdout, "Usage: %s path \n\t%s url\n", argv[0], argv[0]);
266        fprintf(stdout, "Example: \"%s /sdcard/my.mp3\"  or \"%s file:///sdcard/my.mp3\"\n",
267                argv[0], argv[0]);
268        exit(EXIT_FAILURE);
269    }
270
271    SLEngineOption EngineOption[] = {
272            {(SLuint32) SL_ENGINEOPTION_THREADSAFE,
273            (SLuint32) SL_BOOLEAN_TRUE}};
274
275    res = slCreateEngine( &sl, 1, EngineOption, 0, NULL, NULL);
276    CheckErr(res);
277    /* Realizing the SL Engine in synchronous mode. */
278    res = (*sl)->Realize(sl, SL_BOOLEAN_FALSE);
279    CheckErr(res);
280
281    TestPlayUri(sl, argv[1]);
282
283    /* Shutdown OpenSL ES */
284    (*sl)->Destroy(sl);
285
286    return EXIT_SUCCESS;
287}
288