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      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 /* Audio Record Test
     18 
     19 First run the program from shell:
     20   % adb shell slesTest_recBuffQueue /sdcard/myrec.wav
     21 
     22 These use adb on host to retrive the file:
     23   % adb pull /sdcard/myrec.wav
     24 
     25 */
     26 
     27 
     28 #include <stdlib.h>
     29 #include <stdio.h>
     30 #include <string.h>
     31 #include <unistd.h>
     32 #include <sys/time.h>
     33 #include <fcntl.h>
     34 #include <system/audio.h>
     35 #include <audio_utils/primitives.h>
     36 #include <audio_utils/sndfile.h>
     37 
     38 #include <SLES/OpenSLES.h>
     39 #include <SLES/OpenSLES_Android.h>
     40 
     41 audio_format_t transferFormat = AUDIO_FORMAT_DEFAULT;
     42 uint32_t sampleRate = 48000;
     43 int channelCount = 1;
     44 bool useIndexChannelMask = false;
     45 size_t frameSize;
     46 uint32_t performanceMode = SL_ANDROID_PERFORMANCE_LATENCY;
     47 bool aec = false;
     48 bool agc = false;
     49 bool ns = false;
     50 
     51 /* Preset number to use for recording */
     52 SLuint32 presetValue = SL_ANDROID_RECORDING_PRESET_NONE;
     53 
     54 /* Explicitly requesting SL_IID_ANDROIDSIMPLEBUFFERQUEUE and SL_IID_ANDROIDCONFIGURATION
     55  * on the AudioRecorder object */
     56 #define NUM_EXPLICIT_INTERFACES_FOR_RECORDER 2
     57 
     58 /* Size of the recording buffer queue */
     59 #define NB_BUFFERS_IN_QUEUE 1
     60 /* Size of each buffer in the queue */
     61 #define BUFFER_SIZE_IN_BYTES 2048
     62 
     63 /* Local storage for Audio data */
     64 int8_t pcmData[NB_BUFFERS_IN_QUEUE * BUFFER_SIZE_IN_BYTES];
     65 
     66 /* destination for recorded data */
     67 SNDFILE *sndfile;
     68 
     69 //-----------------------------------------------------------------
     70 /* Exits the application if an error is encountered */
     71 #define ExitOnError(x) ExitOnErrorFunc(x,__LINE__)
     72 
     73 void ExitOnErrorFunc( SLresult result , int line)
     74 {
     75     if (SL_RESULT_SUCCESS != result) {
     76         fprintf(stderr, "%u error code encountered at line %d, exiting\n", result, line);
     77         exit(EXIT_FAILURE);
     78     }
     79 }
     80 
     81 //-----------------------------------------------------------------
     82 /* Structure for passing information to callback function */
     83 typedef struct CallbackCntxt_ {
     84     SLPlayItf  playItf;
     85     SLuint32   size;
     86     SLint8*   pDataBase;    // Base address of local audio data storage
     87     SLint8*   pData;        // Current address of local audio data storage
     88 } CallbackCntxt;
     89 
     90 
     91 //-----------------------------------------------------------------
     92 /* Callback for recording buffer queue events */
     93 void RecCallback(
     94         SLRecordItf caller,
     95         void *pContext __unused,
     96         SLuint32 event)
     97 {
     98     if (SL_RECORDEVENT_HEADATNEWPOS & event) {
     99         SLmillisecond pMsec = 0;
    100         (*caller)->GetPosition(caller, &pMsec);
    101         printf("SL_RECORDEVENT_HEADATNEWPOS current position=%ums\n", pMsec);
    102     }
    103 
    104     if (SL_RECORDEVENT_HEADATMARKER & event) {
    105         SLmillisecond pMsec = 0;
    106         (*caller)->GetPosition(caller, &pMsec);
    107         printf("SL_RECORDEVENT_HEADATMARKER current position=%ums\n", pMsec);
    108     }
    109 }
    110 
    111 //-----------------------------------------------------------------
    112 /* Callback for recording buffer queue events */
    113 void RecBufferQueueCallback(
    114         SLAndroidSimpleBufferQueueItf queueItf,
    115         void *pContext)
    116 {
    117     //printf("RecBufferQueueCallback called\n");
    118 
    119     CallbackCntxt *pCntxt = (CallbackCntxt*)pContext;
    120 
    121     /* Save the recorded data  */
    122     sf_count_t frameCount = BUFFER_SIZE_IN_BYTES / frameSize;
    123     switch (transferFormat) {
    124     case AUDIO_FORMAT_PCM_8_BIT: {
    125         short temp[BUFFER_SIZE_IN_BYTES];
    126         memcpy_to_i16_from_u8(temp, (const unsigned char *) pCntxt->pDataBase,
    127                               BUFFER_SIZE_IN_BYTES);
    128         (void) sf_writef_short(sndfile, (const short *) temp, frameCount);
    129         } break;
    130     case AUDIO_FORMAT_PCM_16_BIT:
    131         (void) sf_writef_short(sndfile, (const short *) pCntxt->pDataBase, frameCount);
    132         break;
    133     case AUDIO_FORMAT_PCM_32_BIT:
    134         (void) sf_writef_int(sndfile, (const int *) pCntxt->pDataBase, frameCount);
    135         break;
    136     case AUDIO_FORMAT_PCM_FLOAT:
    137         (void) sf_writef_float(sndfile, (const float *) pCntxt->pDataBase, frameCount);
    138         break;
    139     default:
    140         fprintf(stderr, "Unsupported transfer format %d\n", transferFormat);
    141         exit(EXIT_FAILURE);
    142     }
    143 
    144     /* Increase data pointer by buffer size */
    145     pCntxt->pData += BUFFER_SIZE_IN_BYTES;
    146 
    147     if (pCntxt->pData >= pCntxt->pDataBase + (NB_BUFFERS_IN_QUEUE * BUFFER_SIZE_IN_BYTES)) {
    148         pCntxt->pData = pCntxt->pDataBase;
    149     }
    150 
    151     ExitOnError( (*queueItf)->Enqueue(queueItf, pCntxt->pDataBase, BUFFER_SIZE_IN_BYTES) );
    152 
    153     SLAndroidSimpleBufferQueueState recQueueState;
    154     ExitOnError( (*queueItf)->GetState(queueItf, &recQueueState) );
    155 
    156     /*fprintf(stderr, "\tRecBufferQueueCallback now has pCntxt->pData=%p queue: "
    157             "count=%u playIndex=%u\n",
    158             pCntxt->pData, recQueueState.count, recQueueState.index);*/
    159     //printf("RecBufferQueueCallback returned\n");
    160 }
    161 
    162 //-----------------------------------------------------------------
    163 
    164 /* Record to an audio path by opening a file descriptor on that path  */
    165 void TestRecToBuffQueue( SLObjectItf sl, const char* path, SLAint64 durationInSeconds)
    166 {
    167     SF_INFO info;
    168     info.frames = 0;
    169     info.samplerate = sampleRate;
    170     info.channels = channelCount;
    171     switch (transferFormat) {
    172     case AUDIO_FORMAT_PCM_8_BIT:
    173         info.format = SF_FORMAT_WAV | SF_FORMAT_PCM_U8;
    174         break;
    175     case AUDIO_FORMAT_PCM_16_BIT:
    176         info.format = SF_FORMAT_WAV | SF_FORMAT_PCM_16;
    177         break;
    178     case AUDIO_FORMAT_PCM_32_BIT:
    179         info.format = SF_FORMAT_WAV | SF_FORMAT_PCM_32;
    180         break;
    181     case AUDIO_FORMAT_PCM_FLOAT:
    182         info.format = SF_FORMAT_WAV | SF_FORMAT_FLOAT;
    183         break;
    184     default:
    185         fprintf(stderr, "Unsupported transfer format %d\n", transferFormat);
    186         exit(EXIT_FAILURE);
    187     }
    188     sndfile = sf_open(path, SFM_WRITE, &info);
    189     if (sndfile == NULL) {
    190         ExitOnError(SL_RESULT_RESOURCE_ERROR);
    191     }
    192 
    193     SLresult  result;
    194     SLEngineItf EngineItf;
    195 
    196     /* Objects this application uses: one audio recorder */
    197     SLObjectItf  recorder;
    198 
    199     /* Interfaces for the audio recorder */
    200     SLAndroidSimpleBufferQueueItf recBuffQueueItf;
    201     SLRecordItf               recordItf;
    202     SLAndroidConfigurationItf configItf;
    203 
    204     /* Source of audio data for the recording */
    205     SLDataSource           recSource;
    206     SLDataLocator_IODevice ioDevice;
    207 
    208     /* Data sink for recorded audio */
    209     SLDataSink                recDest;
    210     SLDataLocator_AndroidSimpleBufferQueue recBuffQueue;
    211     /* As mentioned in the Android extension API documentation this is identical to
    212      * OpenSL ES 1.1 SLDataFormat_PCM_EX, and can be used for an instance of SLDataFormat_PCM.
    213      */
    214     SLAndroidDataFormat_PCM_EX pcm;
    215 
    216     int numInterfaces = NUM_EXPLICIT_INTERFACES_FOR_RECORDER;
    217     if (aec) numInterfaces++;
    218     if (agc) numInterfaces++;
    219     if (ns) numInterfaces++;
    220 
    221     SLboolean required[numInterfaces];
    222     SLInterfaceID iidArray[numInterfaces];
    223 
    224     /* Get the SL Engine Interface which is implicit */
    225     result = (*sl)->GetInterface(sl, SL_IID_ENGINE, (void*)&EngineItf);
    226     ExitOnError(result);
    227 
    228     /* Initialize arrays required[] and iidArray[] */
    229     for (int i=0 ; i < numInterfaces ; i++) {
    230         required[i] = SL_BOOLEAN_FALSE;
    231         iidArray[i] = SL_IID_NULL;
    232     }
    233 
    234 
    235     /* ------------------------------------------------------ */
    236     /* Configuration of the recorder  */
    237 
    238     /* Request the AndroidSimpleBufferQueue and AndroidConfiguration interfaces */
    239     int index = 0;
    240     required[index] = SL_BOOLEAN_TRUE;
    241     iidArray[index++] = SL_IID_ANDROIDSIMPLEBUFFERQUEUE;
    242     required[index] = SL_BOOLEAN_TRUE;
    243     iidArray[index++] = SL_IID_ANDROIDCONFIGURATION;
    244     if (aec) {
    245         iidArray[index++] = SL_IID_ANDROIDACOUSTICECHOCANCELLATION;
    246     }
    247     if (agc) {
    248         iidArray[index++] = SL_IID_ANDROIDAUTOMATICGAINCONTROL;
    249     }
    250     if (ns) {
    251         iidArray[index++] = SL_IID_ANDROIDNOISESUPPRESSION;
    252     }
    253 
    254     /* Setup the data source */
    255     ioDevice.locatorType = SL_DATALOCATOR_IODEVICE;
    256     ioDevice.deviceType = SL_IODEVICE_AUDIOINPUT;
    257     ioDevice.deviceID = SL_DEFAULTDEVICEID_AUDIOINPUT;
    258     ioDevice.device = NULL;
    259     recSource.pLocator = (void *) &ioDevice;
    260     recSource.pFormat = NULL;
    261 
    262     /* Setup the data sink */
    263     recBuffQueue.locatorType = SL_DATALOCATOR_ANDROIDSIMPLEBUFFERQUEUE;
    264     recBuffQueue.numBuffers = NB_BUFFERS_IN_QUEUE;
    265     /*    set up the format of the data in the buffer queue */
    266     pcm.formatType = transferFormat == AUDIO_FORMAT_PCM_FLOAT ||
    267             transferFormat == AUDIO_FORMAT_PCM_8_BIT ?
    268             SL_ANDROID_DATAFORMAT_PCM_EX : SL_DATAFORMAT_PCM;
    269     pcm.numChannels = channelCount;
    270     pcm.sampleRate = sampleRate * 1000; // milliHz
    271     pcm.representation = SL_ANDROID_PCM_REPRESENTATION_SIGNED_INT;
    272     switch (transferFormat) {
    273     case AUDIO_FORMAT_PCM_16_BIT:
    274         pcm.bitsPerSample = SL_PCMSAMPLEFORMAT_FIXED_16;
    275         pcm.containerSize = 16;
    276         break;
    277     case AUDIO_FORMAT_PCM_32_BIT:
    278         pcm.bitsPerSample = SL_PCMSAMPLEFORMAT_FIXED_32;
    279         pcm.containerSize = 32;
    280         break;
    281     case AUDIO_FORMAT_PCM_8_BIT:
    282         pcm.bitsPerSample = SL_PCMSAMPLEFORMAT_FIXED_8;
    283         pcm.containerSize = 8;
    284         pcm.representation = SL_ANDROID_PCM_REPRESENTATION_UNSIGNED_INT;
    285         break;
    286     case AUDIO_FORMAT_PCM_FLOAT:
    287         pcm.bitsPerSample = 32;
    288         pcm.containerSize = 32;
    289         pcm.representation = SL_ANDROID_PCM_REPRESENTATION_FLOAT;
    290         break;
    291     default:
    292         fprintf(stderr, "Unsupported transfer format %d\n", transferFormat);
    293         exit(EXIT_FAILURE);
    294     }
    295     if (useIndexChannelMask) {
    296         pcm.channelMask = (1 << channelCount) - 1;
    297     } else {
    298         switch (channelCount) {
    299         case 1:
    300             pcm.channelMask = SL_SPEAKER_FRONT_LEFT;
    301             break;
    302         case 2:
    303             pcm.channelMask = SL_SPEAKER_FRONT_LEFT | SL_SPEAKER_FRONT_RIGHT;
    304             break;
    305         default:
    306             fprintf(stderr, "Unsupported channel count %d\n", channelCount);
    307             exit(EXIT_FAILURE);
    308         }
    309     }
    310     pcm.endianness = SL_BYTEORDER_LITTLEENDIAN;
    311 
    312     recDest.pLocator = (void *) &recBuffQueue;
    313     recDest.pFormat = (void * ) &pcm;
    314 
    315     /* Create the audio recorder */
    316     result = (*EngineItf)->CreateAudioRecorder(EngineItf, &recorder, &recSource, &recDest,
    317                                                numInterfaces, iidArray, required);
    318     ExitOnError(result);
    319     printf("Recorder created\n");
    320 
    321     /* Get the Android configuration interface which is explicit */
    322     result = (*recorder)->GetInterface(recorder, SL_IID_ANDROIDCONFIGURATION, (void*)&configItf);
    323     ExitOnError(result);
    324 
    325     /* Use the configuration interface to configure the recorder before it's realized */
    326     if (presetValue != SL_ANDROID_RECORDING_PRESET_NONE) {
    327         result = (*configItf)->SetConfiguration(configItf, SL_ANDROID_KEY_RECORDING_PRESET,
    328                 &presetValue, sizeof(SLuint32));
    329         ExitOnError(result);
    330         printf("Recorder configured with preset %u\n", presetValue);
    331     } else {
    332         printf("Using default record preset\n");
    333     }
    334 
    335     if (performanceMode != SL_ANDROID_PERFORMANCE_LATENCY) {
    336         result = (*configItf)->SetConfiguration(configItf, SL_ANDROID_KEY_PERFORMANCE_MODE,
    337                 &performanceMode, sizeof(SLuint32));
    338         ExitOnError(result);
    339         printf("Recorder configured with performance mode %u\n", performanceMode);
    340     } else {
    341         printf("Using default performance mode\n");
    342     }
    343 
    344     SLuint32 presetRetrieved = SL_ANDROID_RECORDING_PRESET_NONE;
    345     SLuint32 presetSize = 2*sizeof(SLuint32); // intentionally too big
    346     result = (*configItf)->GetConfiguration(configItf, SL_ANDROID_KEY_RECORDING_PRESET,
    347             &presetSize, (void*)&presetRetrieved);
    348     ExitOnError(result);
    349     if (presetValue == SL_ANDROID_RECORDING_PRESET_NONE) {
    350         printf("The default record preset appears to be %u\n", presetRetrieved);
    351     } else if (presetValue != presetRetrieved) {
    352         fprintf(stderr, "Error retrieving recording preset as %u instead of %u\n", presetRetrieved,
    353                 presetValue);
    354         ExitOnError(SL_RESULT_INTERNAL_ERROR);
    355     }
    356 
    357     /* Realize the recorder in synchronous mode. */
    358     result = (*recorder)->Realize(recorder, SL_BOOLEAN_FALSE);
    359     ExitOnError(result);
    360     printf("Recorder realized\n");
    361 
    362     /* Check actual performance mode granted*/
    363     SLuint32 modeRetrieved = SL_ANDROID_PERFORMANCE_NONE;
    364     SLuint32 modeSize = sizeof(SLuint32);
    365     result = (*configItf)->GetConfiguration(configItf, SL_ANDROID_KEY_PERFORMANCE_MODE,
    366             &modeSize, (void*)&modeRetrieved);
    367     ExitOnError(result);
    368     printf("Actual performance mode is %u\n", modeRetrieved);
    369 
    370     /* Get the record interface which is implicit */
    371     result = (*recorder)->GetInterface(recorder, SL_IID_RECORD, (void*)&recordItf);
    372     ExitOnError(result);
    373 
    374     /* Set up the recorder callback to get events during the recording */
    375     result = (*recordItf)->SetMarkerPosition(recordItf, 2000);
    376     ExitOnError(result);
    377     result = (*recordItf)->SetPositionUpdatePeriod(recordItf, 500);
    378     ExitOnError(result);
    379     result = (*recordItf)->SetCallbackEventsMask(recordItf,
    380             SL_RECORDEVENT_HEADATMARKER | SL_RECORDEVENT_HEADATNEWPOS);
    381     ExitOnError(result);
    382     result = (*recordItf)->RegisterCallback(recordItf, RecCallback, NULL);
    383     ExitOnError(result);
    384     printf("Recorder callback registered\n");
    385 
    386     /* Enable AEC if requested */
    387     if (aec) {
    388         SLAndroidAcousticEchoCancellationItf aecItf;
    389         result = (*recorder)->GetInterface(
    390                 recorder, SL_IID_ANDROIDACOUSTICECHOCANCELLATION, (void*)&aecItf);
    391         printf("AEC is %savailable\n", SL_RESULT_SUCCESS == result ? "" : "not ");
    392         if (SL_RESULT_SUCCESS == result) {
    393             result = (*aecItf)->SetEnabled(aecItf, true);
    394             ExitOnError(result);
    395             SLboolean enabled;
    396             result = (*aecItf)->IsEnabled(aecItf, &enabled);
    397             ExitOnError(result);
    398             printf("AEC is %s\n", enabled ? "enabled" : "not enabled");
    399         }
    400     }
    401 
    402     /* Enable AGC if requested */
    403     if (agc) {
    404         SLAndroidAutomaticGainControlItf agcItf;
    405         result = (*recorder)->GetInterface(
    406                 recorder, SL_IID_ANDROIDAUTOMATICGAINCONTROL, (void*)&agcItf);
    407         printf("AGC is %savailable\n", SL_RESULT_SUCCESS == result ? "" : "not ");
    408         if (SL_RESULT_SUCCESS == result) {
    409             result = (*agcItf)->SetEnabled(agcItf, true);
    410             ExitOnError(result);
    411             SLboolean enabled;
    412             result = (*agcItf)->IsEnabled(agcItf, &enabled);
    413             ExitOnError(result);
    414             printf("AGC is %s\n", enabled ? "enabled" : "not enabled");
    415         }
    416     }
    417 
    418     /* Enable NS if requested */
    419     if (ns) {
    420         SLAndroidNoiseSuppressionItf nsItf;
    421         result = (*recorder)->GetInterface(
    422                 recorder, SL_IID_ANDROIDNOISESUPPRESSION, (void*)&nsItf);
    423         printf("NS is %savailable\n", SL_RESULT_SUCCESS == result ? "" : "not ");
    424         if (SL_RESULT_SUCCESS == result) {
    425             result = (*nsItf)->SetEnabled(nsItf, true);
    426             ExitOnError(result);
    427             SLboolean enabled;
    428             result = (*nsItf)->IsEnabled(nsItf, &enabled);
    429             ExitOnError(result);
    430             printf("NS is %s\n", enabled ? "enabled" : "not enabled");
    431         }
    432     }
    433 
    434     /* Get the buffer queue interface which was explicitly requested */
    435     result = (*recorder)->GetInterface(recorder, SL_IID_ANDROIDSIMPLEBUFFERQUEUE,
    436             (void*)&recBuffQueueItf);
    437     ExitOnError(result);
    438 
    439     /* ------------------------------------------------------ */
    440     /* Initialize the callback and its context for the recording buffer queue */
    441     CallbackCntxt cntxt;
    442     cntxt.pDataBase = (int8_t*)&pcmData;
    443     cntxt.pData = cntxt.pDataBase;
    444     cntxt.size = sizeof(pcmData);
    445     result = (*recBuffQueueItf)->RegisterCallback(recBuffQueueItf, RecBufferQueueCallback, &cntxt);
    446     ExitOnError(result);
    447 
    448     /* Enqueue buffers to map the region of memory allocated to store the recorded data */
    449     printf("Enqueueing buffer ");
    450     for(int i = 0 ; i < NB_BUFFERS_IN_QUEUE ; i++) {
    451         printf("%d ", i);
    452         result = (*recBuffQueueItf)->Enqueue(recBuffQueueItf, cntxt.pData, BUFFER_SIZE_IN_BYTES);
    453         ExitOnError(result);
    454         cntxt.pData += BUFFER_SIZE_IN_BYTES;
    455     }
    456     printf("\n");
    457     cntxt.pData = cntxt.pDataBase;
    458 
    459     /* ------------------------------------------------------ */
    460     /* Start recording */
    461     result = (*recordItf)->SetRecordState(recordItf, SL_RECORDSTATE_RECORDING);
    462     ExitOnError(result);
    463     printf("Starting to record\n");
    464 
    465     /* Record for at least a second */
    466     if (durationInSeconds < 1) {
    467         durationInSeconds = 1;
    468     }
    469     usleep(durationInSeconds * 1000 * 1000);
    470 
    471     /* ------------------------------------------------------ */
    472     /* End of recording */
    473 
    474     /* Stop recording */
    475     result = (*recordItf)->SetRecordState(recordItf, SL_RECORDSTATE_STOPPED);
    476     ExitOnError(result);
    477     printf("Stopped recording\n");
    478 
    479     /* Destroy the AudioRecorder object */
    480     (*recorder)->Destroy(recorder);
    481 
    482     sf_close(sndfile);
    483 }
    484 
    485 //-----------------------------------------------------------------
    486 int main(int argc, char* const argv[])
    487 {
    488     int durationInSeconds = 10;
    489     SLresult    result;
    490     SLObjectItf sl;
    491 
    492     const char *prog = argv[0];
    493     printf("OpenSL ES test %s: exercises SLRecordItf and SLAndroidSimpleBufferQueueItf ",
    494             prog);
    495     printf("on an AudioRecorder object\n");
    496 
    497     int i;
    498     for (i = 1; i < argc; ++i) {
    499         const char *arg = argv[i];
    500         if (arg[0] != '-') {
    501             break;
    502         }
    503         switch (arg[1]) {
    504         case 'c':   // channel count
    505             channelCount = atoi(&arg[2]);
    506             break;
    507         case 'd':   // duration in seconds
    508             durationInSeconds = atoi(&arg[2]);
    509             break;
    510         case 'f':
    511             transferFormat = AUDIO_FORMAT_PCM_FLOAT;
    512             break;
    513         case 'i':
    514             useIndexChannelMask = true;
    515             break;
    516         case 'p':   // preset number
    517             presetValue = atoi(&arg[2]);
    518             break;
    519         case 'r':
    520             sampleRate = atoi(&arg[2]);
    521             break;
    522         case '1':
    523             transferFormat = AUDIO_FORMAT_PCM_8_BIT;
    524             break;
    525         case '2':
    526             transferFormat = AUDIO_FORMAT_PCM_16_BIT;
    527             break;
    528         case '4':
    529             transferFormat = AUDIO_FORMAT_PCM_32_BIT;
    530             break;
    531         case 'm':
    532             performanceMode = atoi(&arg[2]);
    533             break;
    534         case 'x':
    535             if (strstr(arg, "e") != NULL) {
    536                 aec = true;
    537             }
    538             if (strstr(arg, "a") != NULL) {
    539                 agc = true;
    540             }
    541             if (strstr(arg, "n") != NULL) {
    542                 ns = true;
    543             }
    544             break;
    545         default:
    546             fprintf(stderr, "%s: unknown option %s\n", prog, arg);
    547             break;
    548         }
    549     }
    550 
    551     if (transferFormat == AUDIO_FORMAT_DEFAULT) {
    552         transferFormat = AUDIO_FORMAT_PCM_16_BIT;
    553     }
    554     frameSize = audio_bytes_per_sample(transferFormat) * channelCount;
    555 
    556     if (argc-i != 1) {
    557         printf("Usage: \t%s [-c#] [-d#] [-i] [-p#] [-r#] [-1/2/4/f] destination_file\n", prog);
    558         printf("  -c# channel count, defaults to 1\n");
    559         printf("  -d# duration in seconds, default to 10\n");
    560         printf("  -i  index channel mask, not yet implemented\n");
    561         printf("  -p# is the preset value which defaults to SL_ANDROID_RECORDING_PRESET_NONE\n");
    562         printf("  possible values are:\n");
    563         printf("    -p%d SL_ANDROID_RECORDING_PRESET_NONE\n",
    564                 SL_ANDROID_RECORDING_PRESET_NONE);
    565         printf("    -p%d SL_ANDROID_RECORDING_PRESET_GENERIC\n",
    566                 SL_ANDROID_RECORDING_PRESET_GENERIC);
    567         printf("    -p%d SL_ANDROID_RECORDING_PRESET_CAMCORDER\n",
    568                 SL_ANDROID_RECORDING_PRESET_CAMCORDER);
    569         printf("    -p%d SL_ANDROID_RECORDING_PRESET_VOICE_RECOGNITION\n",
    570                 SL_ANDROID_RECORDING_PRESET_VOICE_RECOGNITION);
    571         printf("    -p%d SL_ANDROID_RECORDING_PRESET_VOICE_COMMUNICATION\n",
    572                 SL_ANDROID_RECORDING_PRESET_VOICE_COMMUNICATION);
    573         printf("  -r# sample rate in Hz, defaults to 48000\n");
    574         printf("  -[1/2/4/f] sample format: 8-bit unsigned, 16-bit signed, 32-bit signed, float, "
    575                 "defaults to 16-bit signed\n");
    576         printf("  -m# is the performance mode value which defaults to"
    577                 " SL_ANDROID_PERFORMANCE_LATENCY\n");
    578         printf("  possible values are:\n");
    579         printf("    -m%d SL_ANDROID_PERFORMANCE_NONE\n",
    580                SL_ANDROID_PERFORMANCE_NONE);
    581         printf("    -m%d SL_ANDROID_PERFORMANCE_LATENCY\n",
    582                SL_ANDROID_PERFORMANCE_LATENCY);
    583         printf("    -m%d SL_ANDROID_PERFORMANCE_LATENCY_EFFECTS\n",
    584                SL_ANDROID_PERFORMANCE_LATENCY_EFFECTS);
    585         printf("    -m%d SL_ANDROID_PERFORMANCE_POWER_SAVING\n",
    586                SL_ANDROID_PERFORMANCE_POWER_SAVING);
    587         printf("  -x[e][a][n] for pre processing:\n"
    588                 " - e: Echo canceler\n"
    589                 " - a: Automatic Gain Control\n"
    590                 " - n: Noise Suppression\n");
    591         printf("Example: \"%s /sdcard/myrec.wav\" \n", prog);
    592         exit(EXIT_FAILURE);
    593     }
    594 
    595     SLEngineOption EngineOption[] = {
    596             {(SLuint32) SL_ENGINEOPTION_THREADSAFE, (SLuint32) SL_BOOLEAN_TRUE}
    597     };
    598 
    599     result = slCreateEngine( &sl, 1, EngineOption, 0, NULL, NULL);
    600     ExitOnError(result);
    601 
    602     /* Realizing the SL Engine in synchronous mode. */
    603     result = (*sl)->Realize(sl, SL_BOOLEAN_FALSE);
    604     ExitOnError(result);
    605 
    606     TestRecToBuffQueue(sl, argv[i], durationInSeconds);
    607 
    608     /* Shutdown OpenSL ES */
    609     (*sl)->Destroy(sl);
    610 
    611     return EXIT_SUCCESS;
    612 }
    613