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
38void 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  */
50void 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//-----------------------------------------------------------------
277int 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