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_EQ_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 */
TestEQPathFromFD(SLObjectItf sl,const char * path,SLAint64 offset,SLAint64 size,bool alwaysOn)50 void TestEQPathFromFD( SLObjectItf sl, const char* path
51 #ifdef ANDROID
52 , SLAint64 offset, SLAint64 size
53 #endif
54 , bool alwaysOn
55 )
56 {
57 SLresult result;
58 SLEngineItf EngineItf;
59
60 /* Objects this application uses: one player and an ouput mix */
61 SLObjectItf player, outputMix;
62
63 /* Source of audio data to play */
64 SLDataSource audioSource;
65 #ifdef ANDROID
66 SLDataLocator_AndroidFD locatorFd;
67 #else
68 SLDataLocator_URI locatorUri;
69 #endif
70 SLDataFormat_MIME mime;
71
72 /* Data sinks for the audio player */
73 SLDataSink audioSink;
74 SLDataLocator_OutputMix locator_outputmix;
75
76 /* Play and PrefetchStatus interfaces for the audio player */
77 SLPlayItf playItf;
78 SLPrefetchStatusItf prefetchItf;
79 SLEqualizerItf eqItf;
80
81 SLboolean required[MAX_NUMBER_INTERFACES];
82 SLInterfaceID iidArray[MAX_NUMBER_INTERFACES];
83
84 /* Get the SL Engine Interface which is implicit */
85 result = (*sl)->GetInterface(sl, SL_IID_ENGINE, (void*)&EngineItf);
86 ExitOnError(result);
87
88 /* Initialize arrays required[] and iidArray[] */
89 for (int i=0 ; i < MAX_NUMBER_INTERFACES ; i++) {
90 required[i] = SL_BOOLEAN_FALSE;
91 iidArray[i] = SL_IID_NULL;
92 }
93
94 /* ------------------------------------------------------ */
95 /* Configuration of the output mix */
96
97 /* Create Output Mix object to be used by the player */
98 result = (*EngineItf)->CreateOutputMix(EngineItf, &outputMix, 1, iidArray, required);
99 ExitOnError(result);
100
101 /* Realize the Output Mix object in synchronous mode */
102 result = (*outputMix)->Realize(outputMix, SL_BOOLEAN_FALSE);
103 ExitOnError(result);
104
105 /* Setup the data sink structure */
106 locator_outputmix.locatorType = SL_DATALOCATOR_OUTPUTMIX;
107 locator_outputmix.outputMix = outputMix;
108 audioSink.pLocator = (void*)&locator_outputmix;
109 audioSink.pFormat = NULL;
110
111 /* ------------------------------------------------------ */
112 /* Configuration of the player */
113
114 /* Set arrays required[] and iidArray[] for SLPrefetchStatusItf interfaces */
115 /* (SLPlayItf is implicit) */
116 required[0] = SL_BOOLEAN_TRUE;
117 iidArray[0] = SL_IID_PREFETCHSTATUS;
118 required[1] = SL_BOOLEAN_TRUE;
119 iidArray[1] = SL_IID_EQUALIZER;
120
121 /* Setup the data source structure for the URI */
122 #ifdef ANDROID
123 locatorFd.locatorType = SL_DATALOCATOR_ANDROIDFD;
124 int fd = open(path, O_RDONLY);
125 if (fd == -1) {
126 ExitOnError(SL_RESULT_RESOURCE_ERROR);
127 }
128 locatorFd.fd = (SLint32) fd;
129 locatorFd.length = size;
130 locatorFd.offset = offset;
131 #else
132 locatorUri.locatorType = SL_DATALOCATOR_URI;
133 locatorUri.URI = (SLchar *) path;
134 #endif
135
136 mime.formatType = SL_DATAFORMAT_MIME;
137 /* this is how ignored mime information is specified, according to OpenSL ES spec
138 * in 9.1.6 SLDataFormat_MIME and 8.23 SLMetadataTraversalItf GetChildInfo */
139 mime.mimeType = (SLchar*)NULL;
140 mime.containerType = SL_CONTAINERTYPE_UNSPECIFIED;
141
142 audioSource.pFormat = (void*)&mime;
143 #ifdef ANDROID
144 audioSource.pLocator = (void*)&locatorFd;
145 #else
146 audioSource.pLocator = (void*)&locatorUri;
147 #endif
148
149 /* Create the audio player */
150 result = (*EngineItf)->CreateAudioPlayer(EngineItf, &player, &audioSource, &audioSink, 2,
151 iidArray, required);
152 ExitOnError(result);
153
154 /* Realize the player in synchronous mode. */
155 result = (*player)->Realize(player, SL_BOOLEAN_FALSE); ExitOnError(result);
156 fprintf(stdout, "URI example: after Realize\n");
157
158 /* Get the SLPlayItf, SLPrefetchStatusItf and SLAndroidStreamTypeItf interfaces for the player*/
159 result = (*player)->GetInterface(player, SL_IID_PLAY, (void*)&playItf);
160 ExitOnError(result);
161
162 result = (*player)->GetInterface(player, SL_IID_PREFETCHSTATUS, (void*)&prefetchItf);
163 ExitOnError(result);
164
165 result = (*player)->GetInterface(player, SL_IID_EQUALIZER, (void*)&eqItf);
166 ExitOnError(result);
167
168 fprintf(stdout, "Player configured\n");
169
170 /* ------------------------------------------------------ */
171 /* Playback and test */
172
173 /* Start the data prefetching by setting the player to the paused state */
174 result = (*playItf)->SetPlayState( playItf, SL_PLAYSTATE_PAUSED );
175 ExitOnError(result);
176
177 /* Wait until there's data to play */
178 SLuint32 prefetchStatus = SL_PREFETCHSTATUS_UNDERFLOW;
179 while (prefetchStatus != SL_PREFETCHSTATUS_SUFFICIENTDATA) {
180 usleep(100 * 1000);
181 (*prefetchItf)->GetPrefetchStatus(prefetchItf, &prefetchStatus);
182 ExitOnError(result);
183 }
184
185 /* Get duration */
186 SLmillisecond durationInMsec = SL_TIME_UNKNOWN;
187 result = (*playItf)->GetDuration(playItf, &durationInMsec);
188 ExitOnError(result);
189 if (durationInMsec == SL_TIME_UNKNOWN) {
190 durationInMsec = 5000;
191 }
192
193 /* Start playback */
194 fprintf(stdout, "Starting to play\n");
195 result = (*playItf)->SetPlayState(playItf, SL_PLAYSTATE_PLAYING );
196 ExitOnError(result);
197
198 /* Configure EQ */
199 SLuint16 nbPresets, preset, nbBands = 0;
200 result = (*eqItf)->GetNumberOfBands(eqItf, &nbBands);
201 ExitOnError(result);
202 result = (*eqItf)->GetNumberOfPresets(eqItf, &nbPresets);
203 ExitOnError(result);
204 /* Start from a preset */
205 preset = nbPresets > 2 ? 2 : 0;
206 result = (*eqItf)->UsePreset(eqItf, preset);
207
208 preset = 1977;
209 result = (*eqItf)->GetCurrentPreset(eqItf, &preset);
210 ExitOnError(result);
211 if (SL_EQUALIZER_UNDEFINED == preset) {
212 fprintf(stderr, "Using SL_EQUALIZER_UNDEFINED preset, unexpected here!\n");
213 } else {
214 fprintf(stdout, "Using preset %d\n", preset);
215 }
216
217 /* Tweak it so it's obvious it gets turned on/off later */
218 SLmillibel minLevel, maxLevel = 0;
219 result = (*eqItf)->GetBandLevelRange(eqItf, &minLevel, &maxLevel);
220 ExitOnError(result);
221 fprintf(stdout, "Band level range = %dmB to %dmB\n", minLevel, maxLevel);
222
223 SLuint16 b = 0;
224 for(b = 0 ; b < nbBands/2 ; b++) {
225 result = (*eqItf)->SetBandLevel(eqItf, b, minLevel);
226 ExitOnError(result);
227 }
228 for(b = nbBands/2 ; b < nbBands ; b++) {
229 result = (*eqItf)->SetBandLevel(eqItf, b, maxLevel);
230 ExitOnError(result);
231 }
232
233 SLmillibel level = 0;
234 for(b = 0 ; b < nbBands ; b++) {
235 result = (*eqItf)->GetBandLevel(eqItf, b, &level);
236 ExitOnError(result);
237 fprintf(stdout, "Band %d level = %dmB\n", b, level);
238 }
239
240 /* Switch EQ on/off every TIME_S_BETWEEN_EQ_ON_OFF seconds unless always on */
241 SLboolean previousEnabled = SL_BOOLEAN_FALSE;
242 for(unsigned int j=0 ; j<(durationInMsec/(1000*TIME_S_BETWEEN_EQ_ON_OFF)) ; j++) {
243 SLboolean enabled;
244 result = (*eqItf)->IsEnabled(eqItf, &enabled);
245 ExitOnError(result);
246 enabled = alwaysOn || !enabled;
247 if (enabled != previousEnabled) {
248 result = (*eqItf)->SetEnabled(eqItf, enabled);
249 ExitOnError(result);
250 previousEnabled = enabled;
251 if (SL_BOOLEAN_TRUE == enabled) {
252 fprintf(stdout, "EQ on\n");
253 } else {
254 fprintf(stdout, "EQ off\n");
255 }
256 }
257 usleep(TIME_S_BETWEEN_EQ_ON_OFF * 1000 * 1000);
258 }
259
260 /* Make sure player is stopped */
261 fprintf(stdout, "Stopping playback\n");
262 result = (*playItf)->SetPlayState(playItf, SL_PLAYSTATE_STOPPED);
263 ExitOnError(result);
264
265 /* Destroy the player */
266 (*player)->Destroy(player);
267
268 /* Destroy Output Mix object */
269 (*outputMix)->Destroy(outputMix);
270
271 #ifdef ANDROID
272 close(fd);
273 #endif
274 }
275
276 //-----------------------------------------------------------------
main(int argc,char * const argv[])277 int main(int argc, char* const argv[])
278 {
279 const char *programName = argv[0];
280 SLresult result;
281 SLObjectItf sl;
282
283 fprintf(stdout, "OpenSL ES test %s: exercises SLEqualizerItf ", programName);
284 fprintf(stdout, "and AudioPlayer with SLDataLocator_AndroidFD source / OutputMix sink\n");
285 fprintf(stdout, "Plays the sound file designated by the given path, ");
286 fprintf(stdout, "starting at the specified offset, and using the specified length.\n");
287 fprintf(stdout, "Omit the length of the file for it to be computed by the system.\n");
288 fprintf(stdout, "Every %d seconds, the EQ will be turned on and off,\n",
289 TIME_S_BETWEEN_EQ_ON_OFF);
290 fprintf(stdout, "unless the --always-on option is specified before the path.\n");
291
292 bool alwaysOn = false;
293 if (argc >= 2 && !strcmp(argv[1], "--always-on")) {
294 alwaysOn = true;
295 --argc;
296 ++argv;
297 }
298
299 #ifdef ANDROID
300 if (argc < 3)
301 #else
302 if (argc < 1)
303 #endif
304 {
305 fprintf(stdout, "Usage: \t%s [--always-on] path offsetInBytes [sizeInBytes]\n",
306 programName);
307 fprintf(stdout, "Example: \"%s /sdcard/my.mp3 0 344460\" \n", programName);
308 exit(EXIT_FAILURE);
309 }
310
311 SLEngineOption EngineOption[] = {
312 {(SLuint32) SL_ENGINEOPTION_THREADSAFE, (SLuint32) SL_BOOLEAN_TRUE}
313 };
314
315 result = slCreateEngine( &sl, 1, EngineOption, 0, NULL, NULL);
316 ExitOnError(result);
317
318 /* Realizing the SL Engine in synchronous mode. */
319 result = (*sl)->Realize(sl, SL_BOOLEAN_FALSE);
320 ExitOnError(result);
321
322 #ifdef ANDROID
323 if (argc == 3) {
324 fprintf(stdout, "\nno file size given, using SL_DATALOCATOR_ANDROIDFD_USE_FILE_SIZE\n\n");
325 TestEQPathFromFD(sl, argv[1], (SLAint64)atoi(argv[2]),
326 SL_DATALOCATOR_ANDROIDFD_USE_FILE_SIZE, alwaysOn);
327 } else {
328 TestEQPathFromFD(sl, argv[1], (SLAint64)atoi(argv[2]), (SLAint64)atoi(argv[3]), alwaysOn);
329 }
330 #else
331 TestEQPathFromFD(sl, argv[1]);
332 #endif
333
334 /* Shutdown OpenSL ES */
335 (*sl)->Destroy(sl);
336
337 return EXIT_SUCCESS;
338 }
339