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 <stdlib.h>
18 #include <stdio.h>
19 #include <string.h>
20 #include <unistd.h>
21 #include <sys/time.h>
22 #include <fcntl.h>
23
24 #include <SLES/OpenSLES.h>
25 #ifdef ANDROID
26 #include <SLES/OpenSLES_Android.h>
27 #endif
28
29
30 #define MAX_NUMBER_INTERFACES 3
31
32 #define TIME_S_BETWEEN_VIRT_ON_OFF 3
33
34 //-----------------------------------------------------------------
35 /* Exits the application if an error is encountered */
36 #define ExitOnError(x) ExitOnErrorFunc(x,__LINE__)
37
ExitOnErrorFunc(SLresult result,int line)38 void ExitOnErrorFunc( SLresult result , int line)
39 {
40 if (SL_RESULT_SUCCESS != result) {
41 fprintf(stderr, "%u error code encountered at line %d, exiting\n", result, line);
42 exit(EXIT_FAILURE);
43 }
44 }
45
46
47 //-----------------------------------------------------------------
48
49 /* Play an audio path by opening a file descriptor on that path */
TestVirtualizerPathFromFD(SLObjectItf sl,const char * path,int16_t virtStrength,bool alwaysOn)50 void TestVirtualizerPathFromFD( SLObjectItf sl, const char* path, int16_t virtStrength,
51 bool alwaysOn)
52 {
53 SLresult result;
54 SLEngineItf EngineItf;
55
56 /* Objects this application uses: one player and an ouput mix */
57 SLObjectItf player, outputMix;
58
59 /* Source of audio data to play */
60 SLDataSource audioSource;
61 #ifdef ANDROID
62 SLDataLocator_AndroidFD locatorFd;
63 #else
64 SLDataLocator_URI locatorUri;
65 #endif
66 SLDataFormat_MIME mime;
67
68 /* Data sinks for the audio player */
69 SLDataSink audioSink;
70 SLDataLocator_OutputMix locator_outputmix;
71
72 /* Play and PrefetchStatus interfaces for the audio player */
73 SLPlayItf playItf;
74 SLPrefetchStatusItf prefetchItf;
75 SLVirtualizerItf virtItf;
76
77 SLboolean required[MAX_NUMBER_INTERFACES];
78 SLInterfaceID iidArray[MAX_NUMBER_INTERFACES];
79
80 /* Get the SL Engine Interface which is implicit */
81 result = (*sl)->GetInterface(sl, SL_IID_ENGINE, (void*)&EngineItf);
82 ExitOnError(result);
83
84 /* Initialize arrays required[] and iidArray[] */
85 for (int i=0 ; i < MAX_NUMBER_INTERFACES ; i++) {
86 required[i] = SL_BOOLEAN_FALSE;
87 iidArray[i] = SL_IID_NULL;
88 }
89
90 /* ------------------------------------------------------ */
91 /* Configuration of the output mix */
92
93 /* Create Output Mix object to be used by the player */
94 result = (*EngineItf)->CreateOutputMix(EngineItf, &outputMix, 0, iidArray, required);
95 ExitOnError(result);
96
97 /* Realize the Output Mix object in synchronous mode */
98 result = (*outputMix)->Realize(outputMix, SL_BOOLEAN_FALSE);
99 ExitOnError(result);
100
101 /* Setup the data sink structure */
102 locator_outputmix.locatorType = SL_DATALOCATOR_OUTPUTMIX;
103 locator_outputmix.outputMix = outputMix;
104 audioSink.pLocator = (void*)&locator_outputmix;
105 audioSink.pFormat = NULL;
106
107 /* ------------------------------------------------------ */
108 /* Configuration of the player */
109
110 /* Set arrays required[] and iidArray[] for SLPrefetchStatusItf interfaces */
111 /* (SLPlayItf is implicit) */
112 required[0] = SL_BOOLEAN_TRUE;
113 iidArray[0] = SL_IID_PREFETCHSTATUS;
114 required[1] = SL_BOOLEAN_TRUE;
115 iidArray[1] = SL_IID_VIRTUALIZER;
116
117 #ifdef ANDROID
118 /* Setup the data source structure for the URI */
119 locatorFd.locatorType = SL_DATALOCATOR_ANDROIDFD;
120 int fd = open(path, O_RDONLY);
121 if (fd == -1) {
122 ExitOnError(SL_RESULT_RESOURCE_ERROR);
123 }
124 locatorFd.fd = (SLint32) fd;
125 locatorFd.length = SL_DATALOCATOR_ANDROIDFD_USE_FILE_SIZE;
126 locatorFd.offset = 0;
127 #else
128 locatorUri.locatorType = SL_DATALOCATOR_URI;
129 locatorUri.URI = (SLchar *) path;
130 #endif
131
132 mime.formatType = SL_DATAFORMAT_MIME;
133 /* this is how ignored mime information is specified, according to OpenSL ES spec
134 * in 9.1.6 SLDataFormat_MIME and 8.23 SLMetadataTraversalItf GetChildInfo */
135 mime.mimeType = (SLchar*)NULL;
136 mime.containerType = SL_CONTAINERTYPE_UNSPECIFIED;
137
138 audioSource.pFormat = (void*)&mime;
139 #ifdef ANDROID
140 audioSource.pLocator = (void*)&locatorFd;
141 #else
142 audioSource.pLocator = (void*)&locatorUri;
143 #endif
144
145 /* Create the audio player */
146 result = (*EngineItf)->CreateAudioPlayer(EngineItf, &player, &audioSource, &audioSink, 2,
147 iidArray, required);
148 ExitOnError(result);
149
150 /* Realize the player in synchronous mode. */
151 result = (*player)->Realize(player, SL_BOOLEAN_FALSE); ExitOnError(result);
152 fprintf(stdout, "URI example: after Realize\n");
153
154 /* Get the SLPlayItf, SLPrefetchStatusItf and SLAndroidStreamTypeItf interfaces for the player*/
155 result = (*player)->GetInterface(player, SL_IID_PLAY, (void*)&playItf);
156 ExitOnError(result);
157
158 result = (*player)->GetInterface(player, SL_IID_PREFETCHSTATUS, (void*)&prefetchItf);
159 ExitOnError(result);
160
161 result = (*player)->GetInterface(player, SL_IID_VIRTUALIZER, (void*)&virtItf);
162 ExitOnError(result);
163
164 fprintf(stdout, "Player configured\n");
165
166 /* ------------------------------------------------------ */
167 /* Playback and test */
168
169 /* Start the data prefetching by setting the player to the paused state */
170 result = (*playItf)->SetPlayState( playItf, SL_PLAYSTATE_PAUSED );
171 ExitOnError(result);
172
173 /* Wait until there's data to play */
174 SLuint32 prefetchStatus = SL_PREFETCHSTATUS_UNDERFLOW;
175 while (prefetchStatus != SL_PREFETCHSTATUS_SUFFICIENTDATA) {
176 usleep(100 * 1000);
177 (*prefetchItf)->GetPrefetchStatus(prefetchItf, &prefetchStatus);
178 ExitOnError(result);
179 }
180
181 /* Get duration */
182 SLmillisecond durationInMsec = SL_TIME_UNKNOWN;
183 result = (*playItf)->GetDuration(playItf, &durationInMsec);
184 ExitOnError(result);
185 if (durationInMsec == SL_TIME_UNKNOWN) {
186 durationInMsec = 5000;
187 }
188
189 /* Start playback */
190 fprintf(stdout, "Starting to play\n");
191 result = (*playItf)->SetPlayState(playItf, SL_PLAYSTATE_PLAYING );
192 ExitOnError(result);
193
194 /* Configure Virtualizer */
195 SLboolean strengthSupported = SL_BOOLEAN_FALSE;
196 result = (*virtItf)->IsStrengthSupported(virtItf, &strengthSupported);
197 ExitOnError(result);
198 if (SL_BOOLEAN_FALSE == strengthSupported) {
199 fprintf(stdout, "Virtualizer strength is not supported on this platform. Too bad!\n");
200 } else {
201 fprintf(stdout, "Virtualizer strength is supported, setting strength to %d\n",
202 virtStrength);
203 result = (*virtItf)->SetStrength(virtItf, virtStrength);
204 ExitOnError(result);
205 }
206
207 SLpermille strength = 0;
208 result = (*virtItf)->GetRoundedStrength(virtItf, &strength);
209 ExitOnError(result);
210 fprintf(stdout, "Rounded strength of virt = %d\n", strength);
211
212
213 /* Switch Virtualizer on/off every TIME_S_BETWEEN_VIRT_ON_OFF seconds unless always on */
214 SLboolean previousEnabled = SL_BOOLEAN_FALSE;
215 for(unsigned int j=0 ; j<(durationInMsec/(1000*TIME_S_BETWEEN_VIRT_ON_OFF)) ; j++) {
216 SLboolean enabled;
217 result = (*virtItf)->IsEnabled(virtItf, &enabled);
218 ExitOnError(result);
219 enabled = alwaysOn || !enabled;
220 if (enabled != previousEnabled) {
221 result = (*virtItf)->SetEnabled(virtItf, enabled);
222 ExitOnError(result);
223 previousEnabled = enabled;
224 if (SL_BOOLEAN_TRUE == enabled) {
225 fprintf(stdout, "Virtualizer on\n");
226 } else {
227 fprintf(stdout, "Virtualizer off\n");
228 }
229 }
230 usleep(TIME_S_BETWEEN_VIRT_ON_OFF * 1000 * 1000);
231 }
232
233 /* Make sure player is stopped */
234 fprintf(stdout, "Stopping playback\n");
235 result = (*playItf)->SetPlayState(playItf, SL_PLAYSTATE_STOPPED);
236 ExitOnError(result);
237
238 /* Destroy the player */
239 (*player)->Destroy(player);
240
241 /* Destroy Output Mix object */
242 (*outputMix)->Destroy(outputMix);
243
244 #ifdef ANDROID
245 close(fd);
246 #endif
247 }
248
249 //-----------------------------------------------------------------
main(int argc,char * const argv[])250 int main(int argc, char* const argv[])
251 {
252 const char *programName = argv[0];
253 SLresult result;
254 SLObjectItf sl;
255
256 fprintf(stdout, "OpenSL ES test %s: exercises SLVirtualizerItf ", programName);
257 fprintf(stdout, "and AudioPlayer with SLDataLocator_AndroidFD source / OutputMix sink\n");
258 fprintf(stdout, "Plays the sound file designated by the given path, ");
259 fprintf(stdout, "and applies a virtualization effect of the specified strength,\n");
260 fprintf(stdout, "where strength is an integer value between 0 and 1000.\n");
261 fprintf(stdout, "Every %d seconds, the Virtualizer will be turned on and off,\n",
262 TIME_S_BETWEEN_VIRT_ON_OFF);
263 fprintf(stdout, "unless the --always-on option is specified before the path.\n");
264
265 bool alwaysOn = false;
266 if (argc >= 2 && !strcmp(argv[1], "--always-on")) {
267 alwaysOn = true;
268 --argc;
269 ++argv;
270 }
271
272 if (argc < 3) {
273 fprintf(stdout, "Usage: \t%s [--always-on] path virtualization_strength\n", programName);
274 fprintf(stdout, "Example: \"%s /sdcard/my.mp3 1000\" \n", programName);
275 exit(EXIT_FAILURE);
276 }
277
278 SLEngineOption EngineOption[] = {
279 {(SLuint32) SL_ENGINEOPTION_THREADSAFE, (SLuint32) SL_BOOLEAN_TRUE}
280 };
281
282 result = slCreateEngine( &sl, 1, EngineOption, 0, NULL, NULL);
283 ExitOnError(result);
284
285 /* Realizing the SL Engine in synchronous mode. */
286 result = (*sl)->Realize(sl, SL_BOOLEAN_FALSE);
287 ExitOnError(result);
288
289 // intentionally not checking that argv[2], the virtualizer strength, is between 0 and 1000
290 TestVirtualizerPathFromFD(sl, argv[1], (int16_t)atoi(argv[2]), alwaysOn);
291
292 /* Shutdown OpenSL ES */
293 (*sl)->Destroy(sl);
294
295 return EXIT_SUCCESS;
296 }
297