slesTestRecBuffQueue.cpp revision 4dd1fab74463de4852b86af64481006f87d48b54 
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
19First run the program from shell:
20  # slesTest_recBuffQueue /sdcard/myrec.raw 4
21
22These use adb on host to retrive the file:
23  % adb pull /sdcard/myrec.raw myrec.raw
24
25How to examine the output with Audacity:
26 Project / Import raw data
27 Select myrec.raw file, then click Open button
28 Choose these options:
29  Signed 16-bit PCM
30  Little-endian
31  1 Channel (Mono)
32  Sample rate 22050 Hz
33 Click Import button
34
35*/
36
37
38#include <stdlib.h>
39#include <stdio.h>
40#include <string.h>
41#include <unistd.h>
42#include <sys/time.h>
43#include <fcntl.h>
44
45#include <SLES/OpenSLES.h>
46#include <SLES/OpenSLES_Android.h>
47#include <SLES/OpenSLES_AndroidConfiguration.h>
48
49/* Preset number to use for recording */
50SLuint32 presetValue = SL_ANDROID_RECORDING_PRESET_NONE;
51
52/* Explicitly requesting SL_IID_ANDROIDSIMPLEBUFFERQUEUE and SL_IID_ANDROIDCONFIGURATION
53 * on the AudioRecorder object */
54#define NUM_EXPLICIT_INTERFACES_FOR_RECORDER 2
55
56/* Size of the recording buffer queue */
57#define NB_BUFFERS_IN_QUEUE 1
58/* Size of each buffer in the queue */
59#define BUFFER_SIZE_IN_SAMPLES 1024
60#define BUFFER_SIZE_IN_BYTES   (2*BUFFER_SIZE_IN_SAMPLES)
61
62/* Local storage for Audio data */
63int8_t pcmData[NB_BUFFERS_IN_QUEUE * BUFFER_SIZE_IN_BYTES];
64
65/* destination for recorded data */
66static FILE* gFp;
67
68//-----------------------------------------------------------------
69/* Exits the application if an error is encountered */
70#define ExitOnError(x) ExitOnErrorFunc(x,__LINE__)
71
72void ExitOnErrorFunc( SLresult result , int line)
73{
74    if (SL_RESULT_SUCCESS != result) {
75        fprintf(stdout, "%u error code encountered at line %d, exiting\n", result, line);
76        exit(EXIT_FAILURE);
77    }
78}
79
80//-----------------------------------------------------------------
81/* Structure for passing information to callback function */
82typedef struct CallbackCntxt_ {
83    SLPlayItf  playItf;
84    SLuint32   size;
85    SLint8*   pDataBase;    // Base address of local audio data storage
86    SLint8*   pData;        // Current address of local audio data storage
87} CallbackCntxt;
88
89
90//-----------------------------------------------------------------
91/* Callback for recording buffer queue events */
92void RecCallback(
93        SLRecordItf caller,
94        void *pContext,
95        SLuint32 event)
96{
97    if (SL_RECORDEVENT_HEADATNEWPOS & event) {
98        SLmillisecond pMsec = 0;
99        (*caller)->GetPosition(caller, &pMsec);
100        fprintf(stdout, "SL_RECORDEVENT_HEADATNEWPOS current position=%ums\n", pMsec);
101    }
102
103    if (SL_RECORDEVENT_HEADATMARKER & event) {
104        SLmillisecond pMsec = 0;
105        (*caller)->GetPosition(caller, &pMsec);
106        fprintf(stdout, "SL_RECORDEVENT_HEADATMARKER current position=%ums\n", pMsec);
107    }
108}
109
110//-----------------------------------------------------------------
111/* Callback for recording buffer queue events */
112void RecBufferQueueCallback(
113        SLAndroidSimpleBufferQueueItf queueItf,
114        void *pContext)
115{
116    //fprintf(stdout, "RecBufferQueueCallback called\n");
117
118    CallbackCntxt *pCntxt = (CallbackCntxt*)pContext;
119
120    /* Save the recorded data  */
121    fwrite(pCntxt->pDataBase, BUFFER_SIZE_IN_BYTES, 1, gFp);
122
123    /* Increase data pointer by buffer size */
124    pCntxt->pData += BUFFER_SIZE_IN_BYTES;
125
126    if (pCntxt->pData >= pCntxt->pDataBase + (NB_BUFFERS_IN_QUEUE * BUFFER_SIZE_IN_BYTES)) {
127        pCntxt->pData = pCntxt->pDataBase;
128    }
129
130    ExitOnError( (*queueItf)->Enqueue(queueItf, pCntxt->pDataBase, BUFFER_SIZE_IN_BYTES) );
131
132    SLAndroidSimpleBufferQueueState recQueueState;
133    ExitOnError( (*queueItf)->GetState(queueItf, &recQueueState) );
134
135    /*fprintf(stderr, "\tRecBufferQueueCallback now has pCntxt->pData=%p queue: "
136            "count=%u playIndex=%u\n",
137            pCntxt->pData, recQueueState.count, recQueueState.index);*/
138}
139
140//-----------------------------------------------------------------
141
142/* Play an audio path by opening a file descriptor on that path  */
143void TestRecToBuffQueue( SLObjectItf sl, const char* path, SLAint64 durationInSeconds)
144{
145    gFp = fopen(path, "w");
146    if (NULL == gFp) {
147        ExitOnError(SL_RESULT_RESOURCE_ERROR);
148    }
149
150    SLresult  result;
151    SLEngineItf EngineItf;
152
153    /* Objects this application uses: one audio recorder */
154    SLObjectItf  recorder;
155
156    /* Interfaces for the audio recorder */
157    SLAndroidSimpleBufferQueueItf recBuffQueueItf;
158    SLRecordItf               recordItf;
159    SLAndroidConfigurationItf configItf;
160
161    /* Source of audio data for the recording */
162    SLDataSource           recSource;
163    SLDataLocator_IODevice ioDevice;
164
165    /* Data sink for recorded audio */
166    SLDataSink                recDest;
167    SLDataLocator_AndroidSimpleBufferQueue recBuffQueue;
168    SLDataFormat_PCM          pcm;
169
170    SLboolean required[NUM_EXPLICIT_INTERFACES_FOR_RECORDER];
171    SLInterfaceID iidArray[NUM_EXPLICIT_INTERFACES_FOR_RECORDER];
172
173    /* Get the SL Engine Interface which is implicit */
174    result = (*sl)->GetInterface(sl, SL_IID_ENGINE, (void*)&EngineItf);
175    ExitOnError(result);
176
177    /* Initialize arrays required[] and iidArray[] */
178    for (int i=0 ; i < NUM_EXPLICIT_INTERFACES_FOR_RECORDER ; i++) {
179        required[i] = SL_BOOLEAN_FALSE;
180        iidArray[i] = SL_IID_NULL;
181    }
182
183
184    /* ------------------------------------------------------ */
185    /* Configuration of the recorder  */
186
187    /* Request the AndroidSimpleBufferQueue and AndroidConfiguration interfaces */
188    required[0] = SL_BOOLEAN_TRUE;
189    iidArray[0] = SL_IID_ANDROIDSIMPLEBUFFERQUEUE;
190    required[1] = SL_BOOLEAN_TRUE;
191    iidArray[1] = SL_IID_ANDROIDCONFIGURATION;
192
193    /* Setup the data source */
194    ioDevice.locatorType = SL_DATALOCATOR_IODEVICE;
195    ioDevice.deviceType = SL_IODEVICE_AUDIOINPUT;
196    ioDevice.deviceID = SL_DEFAULTDEVICEID_AUDIOINPUT;
197    ioDevice.device = NULL;
198    recSource.pLocator = (void *) &ioDevice;
199    recSource.pFormat = NULL;
200
201    /* Setup the data sink */
202    recBuffQueue.locatorType = SL_DATALOCATOR_ANDROIDSIMPLEBUFFERQUEUE;
203    recBuffQueue.numBuffers = NB_BUFFERS_IN_QUEUE;
204    /*    set up the format of the data in the buffer queue */
205    pcm.formatType = SL_DATAFORMAT_PCM;
206    pcm.numChannels = 1;
207    pcm.samplesPerSec = SL_SAMPLINGRATE_22_05;
208    pcm.bitsPerSample = SL_PCMSAMPLEFORMAT_FIXED_16;
209    pcm.containerSize = 16;
210    pcm.channelMask = SL_SPEAKER_FRONT_LEFT;
211    pcm.endianness = SL_BYTEORDER_LITTLEENDIAN;
212
213    recDest.pLocator = (void *) &recBuffQueue;
214    recDest.pFormat = (void * ) &pcm;
215
216    /* Create the audio recorder */
217    result = (*EngineItf)->CreateAudioRecorder(EngineItf, &recorder, &recSource, &recDest,
218            NUM_EXPLICIT_INTERFACES_FOR_RECORDER, iidArray, required);
219    ExitOnError(result);
220    fprintf(stdout, "Recorder created\n");
221
222    /* Get the Android configuration interface which is explicit */
223    result = (*recorder)->GetInterface(recorder, SL_IID_ANDROIDCONFIGURATION, (void*)&configItf);
224    ExitOnError(result);
225
226    /* Use the configuration interface to configure the recorder before it's realized */
227    if (presetValue != SL_ANDROID_RECORDING_PRESET_NONE) {
228        result = (*configItf)->SetConfiguration(configItf, SL_ANDROID_KEY_RECORDING_PRESET,
229                &presetValue, sizeof(SLuint32));
230        ExitOnError(result);
231        fprintf(stdout, "Recorder parameterized with preset %u\n", presetValue);
232    } else {
233        printf("Using default record preset\n");
234    }
235
236    SLuint32 presetRetrieved = SL_ANDROID_RECORDING_PRESET_NONE;
237    SLuint32 presetSize = 2*sizeof(SLuint32); // intentionally too big
238    result = (*configItf)->GetConfiguration(configItf, SL_ANDROID_KEY_RECORDING_PRESET,
239            &presetSize, (void*)&presetRetrieved);
240    ExitOnError(result);
241    if (presetValue == SL_ANDROID_RECORDING_PRESET_NONE) {
242        printf("The default record preset appears to be %u\n", presetRetrieved);
243    } else if (presetValue != presetRetrieved) {
244        fprintf(stderr, "Error retrieving recording preset as %u instead of %u\n", presetRetrieved, presetValue);
245        ExitOnError(SL_RESULT_INTERNAL_ERROR);
246    }
247
248    /* Realize the recorder in synchronous mode. */
249    result = (*recorder)->Realize(recorder, SL_BOOLEAN_FALSE);
250    ExitOnError(result);
251    fprintf(stdout, "Recorder realized\n");
252
253    /* Get the record interface which is implicit */
254    result = (*recorder)->GetInterface(recorder, SL_IID_RECORD, (void*)&recordItf);
255    ExitOnError(result);
256
257    /* Set up the recorder callback to get events during the recording */
258    result = (*recordItf)->SetMarkerPosition(recordItf, 2000);
259    ExitOnError(result);
260    result = (*recordItf)->SetPositionUpdatePeriod(recordItf, 500);
261    ExitOnError(result);
262    result = (*recordItf)->SetCallbackEventsMask(recordItf,
263            SL_RECORDEVENT_HEADATMARKER | SL_RECORDEVENT_HEADATNEWPOS);
264    ExitOnError(result);
265    result = (*recordItf)->RegisterCallback(recordItf, RecCallback, NULL);
266    ExitOnError(result);
267    fprintf(stdout, "Recorder callback registered\n");
268
269    /* Get the buffer queue interface which was explicitly requested */
270    result = (*recorder)->GetInterface(recorder, SL_IID_ANDROIDSIMPLEBUFFERQUEUE,
271            (void*)&recBuffQueueItf);
272    ExitOnError(result);
273
274    /* ------------------------------------------------------ */
275    /* Initialize the callback and its context for the recording buffer queue */
276    CallbackCntxt cntxt;
277    cntxt.pDataBase = (int8_t*)&pcmData;
278    cntxt.pData = cntxt.pDataBase;
279    cntxt.size = sizeof(pcmData);
280    result = (*recBuffQueueItf)->RegisterCallback(recBuffQueueItf, RecBufferQueueCallback, &cntxt);
281    ExitOnError(result);
282
283    /* Enqueue buffers to map the region of memory allocated to store the recorded data */
284    fprintf(stdout,"Enqueueing buffer ");
285    for(int i = 0 ; i < NB_BUFFERS_IN_QUEUE ; i++) {
286        fprintf(stdout,"%d ", i);
287        result = (*recBuffQueueItf)->Enqueue(recBuffQueueItf, cntxt.pData, BUFFER_SIZE_IN_BYTES);
288        ExitOnError(result);
289        cntxt.pData += BUFFER_SIZE_IN_BYTES;
290    }
291    fprintf(stdout,"\n");
292    cntxt.pData = cntxt.pDataBase;
293
294    /* ------------------------------------------------------ */
295    /* Start recording */
296    result = (*recordItf)->SetRecordState(recordItf, SL_RECORDSTATE_RECORDING);
297    ExitOnError(result);
298    fprintf(stdout, "Starting to record\n");
299
300    /* Record for at least a second */
301    if (durationInSeconds < 1) {
302        durationInSeconds = 1;
303    }
304    usleep(durationInSeconds * 1000 * 1000);
305
306    /* ------------------------------------------------------ */
307    /* End of recording */
308
309    /* Stop recording */
310    result = (*recordItf)->SetRecordState(recordItf, SL_RECORDSTATE_STOPPED);
311    ExitOnError(result);
312    fprintf(stdout, "Stopped recording\n");
313
314    /* Destroy the AudioRecorder object */
315    (*recorder)->Destroy(recorder);
316
317    fclose(gFp);
318}
319
320//-----------------------------------------------------------------
321int main(int argc, char* const argv[])
322{
323    SLresult    result;
324    SLObjectItf sl;
325
326    const char *prog = argv[0];
327    fprintf(stdout, "OpenSL ES test %s: exercises SLRecordItf and SLAndroidSimpleBufferQueueItf ",
328            prog);
329    fprintf(stdout, "on an AudioRecorder object\n");
330
331    int i;
332    for (i = 1; i < argc; ++i) {
333        const char *arg = argv[i];
334        if (arg[0] != '-') {
335            break;
336        }
337        switch (arg[1]) {
338        case 'p':   // preset number
339            presetValue = atoi(&arg[2]);
340            break;
341        default:
342            fprintf(stderr, "%s: unknown option %s\n", prog, arg);
343            break;
344        }
345    }
346
347    if (argc-i < 2) {
348        fprintf(stdout, "Usage: \t%s [-p#] destination_file duration_in_seconds\n", prog);
349        fprintf(stdout, "Example: \"%s /sdcard/myrec.raw 4\" \n", prog);
350        exit(EXIT_FAILURE);
351    }
352
353    SLEngineOption EngineOption[] = {
354            {(SLuint32) SL_ENGINEOPTION_THREADSAFE, (SLuint32) SL_BOOLEAN_TRUE}
355    };
356
357    result = slCreateEngine( &sl, 1, EngineOption, 0, NULL, NULL);
358    ExitOnError(result);
359
360    /* Realizing the SL Engine in synchronous mode. */
361    result = (*sl)->Realize(sl, SL_BOOLEAN_FALSE);
362    ExitOnError(result);
363
364    TestRecToBuffQueue(sl, argv[i], (SLAint64)atoi(argv[i+1]));
365
366    /* Shutdown OpenSL ES */
367    (*sl)->Destroy(sl);
368
369    return EXIT_SUCCESS;
370}
371