slesTestPlayStream.cpp revision d158d31a6bbb06426b71c3d097b7768bc3fb79a3 
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
18#include <stdlib.h>
19#include <stdio.h>
20//#include <string.h>
21#include <unistd.h>
22//#include <sys/time.h>
23
24#include "SLES/OpenSLES.h"
25#include "SLES/OpenSLES_Android.h"
26
27
28#define MAX_NUMBER_INTERFACES 2
29
30#define PREFETCHEVENT_ERROR_CANDIDATE \
31        (SL_PREFETCHEVENT_STATUSCHANGE | SL_PREFETCHEVENT_FILLLEVELCHANGE)
32
33#define NB_BUFFERS 16
34#define MPEG2_TS_BLOCK_SIZE 188
35#define BUFFER_SIZE 20*MPEG2_TS_BLOCK_SIZE
36
37/* Where we store the data to play */
38char dataCache[BUFFER_SIZE * NB_BUFFERS];
39/* From where we read the data to play */
40FILE *file;
41
42//-----------------------------------------------------------------
43//* Exits the application if an error is encountered */
44#define CheckErr(x) ExitOnErrorFunc(x,__LINE__)
45
46void ExitOnErrorFunc( SLresult result , int line)
47{
48    if (SL_RESULT_SUCCESS != result) {
49        fprintf(stderr, "%lu error code encountered at line %d, exiting\n", result, line);
50        exit(EXIT_FAILURE);
51    }
52}
53
54bool prefetchError = false;
55
56//-----------------------------------------------------------------
57/* AndroidBufferQueueItf callback for an audio player */
58SLresult AndroidBufferQueueCallback(
59        SLAndroidBufferQueueItf caller,
60        void *pContext,                /* input */
61        const void *pBufferData,       /* input */
62        SLuint32 dataSize,             /* input */
63        SLuint32 dataUsed,             /* input */
64        const SLAndroidBufferItem *pItems,/* input */
65        SLuint32 itemsLength           /* input */)
66{
67    // assert(BUFFER_SIZE <= dataSize);
68    size_t nbRead = fread((void*)pBufferData, 1, BUFFER_SIZE, file);
69    if (nbRead > 0) {
70        (*caller)->Enqueue(caller,
71                pBufferData /*pData*/,
72                nbRead /*dataLength*/,
73                NULL /*pMsg*/,
74                0 /*msgLength*/);
75    } else {
76        // signal EOS
77        SLAndroidBufferItem msgEos;
78        msgEos.itemKey = SL_ANDROID_ITEMKEY_EOS;
79        msgEos.itemSize = 0;
80        // EOS message has no parameters, so the total size of the message is the size of the key
81        //   plus the size if itemSize, both SLuint32
82        (*caller)->Enqueue(caller, NULL /*pData*/, 0 /*dataLength*/,
83                        &msgEos /*pMsg*/,
84                        sizeof(SLuint32)*2 /*msgLength*/);
85    }
86
87    return SL_RESULT_SUCCESS;
88}
89
90
91//-----------------------------------------------------------------
92
93/* Play some music from a URI  */
94void TestPlayStream( SLObjectItf sl, const char* path)
95{
96    SLEngineItf                EngineItf;
97
98    SLint32                    numOutputs = 0;
99    SLuint32                   deviceID = 0;
100
101    SLresult                   res;
102
103    SLDataSource               audioSource;
104    SLDataLocator_AndroidBufferQueue streamLocator;
105    SLDataFormat_MIME          mime;
106
107    SLDataSink                 audioSink;
108    SLDataLocator_OutputMix    locator_outputmix;
109
110    SLObjectItf                player;
111    SLPlayItf                  playItf;
112    SLVolumeItf                volItf;
113    SLAndroidBufferQueueItf    abqItf;
114
115    SLObjectItf                OutputMix;
116
117    SLboolean required[MAX_NUMBER_INTERFACES];
118    SLInterfaceID iidArray[MAX_NUMBER_INTERFACES];
119
120    int playTimeInSec = 90;
121
122    file = fopen(path, "rb");
123
124    /* Get the SL Engine Interface which is implicit */
125    res = (*sl)->GetInterface(sl, SL_IID_ENGINE, (void*)&EngineItf);
126    CheckErr(res);
127
128    /* Initialize arrays required[] and iidArray[] */
129    for (int i=0 ; i < MAX_NUMBER_INTERFACES ; i++) {
130        required[i] = SL_BOOLEAN_FALSE;
131        iidArray[i] = SL_IID_NULL;
132    }
133
134    // Set arrays required[] and iidArray[] for VOLUME and PREFETCHSTATUS interface
135    required[0] = SL_BOOLEAN_TRUE;
136    iidArray[0] = SL_IID_VOLUME;
137    required[1] = SL_BOOLEAN_TRUE;
138    iidArray[1] = SL_IID_ANDROIDBUFFERQUEUE;
139    // Create Output Mix object to be used by player
140    res = (*EngineItf)->CreateOutputMix(EngineItf, &OutputMix, 0,
141            iidArray, required); CheckErr(res);
142
143    // Realizing the Output Mix object in synchronous mode.
144    res = (*OutputMix)->Realize(OutputMix, SL_BOOLEAN_FALSE);
145    CheckErr(res);
146
147    /* Setup the data source structure for the URI */
148    streamLocator.locatorType  = SL_DATALOCATOR_ANDROIDBUFFERQUEUE;
149    streamLocator.numBuffers   = NB_BUFFERS;
150    mime.formatType    = SL_DATAFORMAT_MIME;
151    mime.mimeType      = (SLchar *) "video/mp2ts";//(SLchar*)NULL;
152    mime.containerType = SL_CONTAINERTYPE_MPEG_TS;
153
154    audioSource.pFormat      = (void *)&mime;
155    audioSource.pLocator     = (void *)&streamLocator;
156
157    /* Setup the data sink structure */
158    locator_outputmix.locatorType   = SL_DATALOCATOR_OUTPUTMIX;
159    locator_outputmix.outputMix    = OutputMix;
160    audioSink.pLocator           = (void *)&locator_outputmix;
161    audioSink.pFormat            = NULL;
162
163    /* Create the audio player */
164    res = (*EngineItf)->CreateAudioPlayer(EngineItf, &player, &audioSource, &audioSink,
165            MAX_NUMBER_INTERFACES, iidArray, required); CheckErr(res);
166
167    /* Realizing the player in synchronous mode. */
168    res = (*player)->Realize(player, SL_BOOLEAN_FALSE); CheckErr(res);
169    fprintf(stdout, "URI example: after Realize\n");
170
171    /* Get interfaces */
172    res = (*player)->GetInterface(player, SL_IID_PLAY, (void*)&playItf); CheckErr(res);
173
174    res = (*player)->GetInterface(player, SL_IID_VOLUME,  (void*)&volItf); CheckErr(res);
175
176    res = (*player)->GetInterface(player, SL_IID_ANDROIDBUFFERQUEUE, (void*)&abqItf);
177    CheckErr(res);
178
179    res = (*abqItf)->RegisterCallback(abqItf, AndroidBufferQueueCallback,
180            // context is not used in the example, but can be used to track who registered
181            // the buffer queue callback
182            NULL /*pContext*/); CheckErr(res);
183
184    /* Display duration */
185    SLmillisecond durationInMsec = SL_TIME_UNKNOWN;
186    res = (*playItf)->GetDuration(playItf, &durationInMsec);
187    CheckErr(res);
188    if (durationInMsec == SL_TIME_UNKNOWN) {
189        fprintf(stdout, "Content duration is unknown (before starting to prefetch)\n");
190    } else {
191        fprintf(stdout, "Content duration is %lu ms (before starting to prefetch)\n",
192                durationInMsec);
193    }
194
195    /* Set the player volume */
196    res = (*volItf)->SetVolumeLevel( volItf, 0);//-300);
197    CheckErr(res);
198
199
200    /* Play the URI */
201    /*     first cause the player to prefetch the data */
202    fprintf(stdout, "Before set to PAUSED\n");
203    res = (*playItf)->SetPlayState( playItf, SL_PLAYSTATE_PAUSED );
204    fprintf(stdout, "After set to PAUSED\n");
205    CheckErr(res);
206
207
208    /* Fill our cache */
209    if (fread(dataCache, 1, BUFFER_SIZE * NB_BUFFERS, file) <= 0) {
210        fprintf(stderr, "Error filling cache, exiting\n");
211        goto destroyRes;
212    }
213    /* Enqueue the content of our cache before starting to play,
214         * we don't want to starve the player */
215    for (int i=0 ; i < NB_BUFFERS ; i++) {
216        res = (*abqItf)->Enqueue(abqItf, dataCache + i*BUFFER_SIZE, BUFFER_SIZE, NULL, 0);
217        CheckErr(res);
218    }
219
220
221
222
223    /*     wait until there's data to play */
224    //SLpermille fillLevel = 0;
225 /*
226    SLuint32 prefetchStatus = SL_PREFETCHSTATUS_UNDERFLOW;
227    SLuint32 timeOutIndex = 2;
228    while ((prefetchStatus != SL_PREFETCHSTATUS_SUFFICIENTDATA) && (timeOutIndex > 0) &&
229            !prefetchError) {
230        usleep(1 * 1000 * 1000); // 1s
231        //(*prefetchItf)->GetPrefetchStatus(prefetchItf, &prefetchStatus);
232        timeOutIndex--;
233    }
234
235    if (timeOutIndex == 0 || prefetchError) {
236        fprintf(stderr, "We\'re done waiting, failed to prefetch data in time, exiting\n");
237        goto destroyRes;
238    }
239*/
240
241    /* Display duration again, */
242/*    res = (*playItf)->GetDuration(playItf, &durationInMsec);
243    CheckErr(res);
244    if (durationInMsec == SL_TIME_UNKNOWN) {
245        fprintf(stdout, "Content duration is unknown (after prefetch completed)\n");
246    } else {
247        fprintf(stdout, "Content duration is %lu ms (after prefetch completed)\n", durationInMsec);
248    }
249*/
250
251    fprintf(stdout, "URI example: starting to play\n");
252    res = (*playItf)->SetPlayState( playItf, SL_PLAYSTATE_PLAYING );
253    CheckErr(res);
254
255    /* Wait as long as the duration of the content before stopping */
256    fprintf(stdout, "Letting playback go on for %d sec\n", playTimeInSec);
257    usleep(playTimeInSec /*s*/ * 1000 * 1000);
258
259
260    /* Make sure player is stopped */
261    fprintf(stdout, "URI example: stopping playback\n");
262    res = (*playItf)->SetPlayState(playItf, SL_PLAYSTATE_STOPPED);
263    CheckErr(res);
264
265    fprintf(stdout, "sleeping to verify playback stopped\n");
266    usleep(2 /*s*/ * 1000 * 1000);
267
268destroyRes:
269
270    /* Destroy the player */
271    (*player)->Destroy(player);
272
273    /* Destroy Output Mix object */
274    (*OutputMix)->Destroy(OutputMix);
275
276    fclose(file);
277}
278
279//-----------------------------------------------------------------
280int main(int argc, char* const argv[])
281{
282    SLresult    res;
283    SLObjectItf sl;
284
285    fprintf(stdout, "OpenSL ES test %s: exercises SLPlayItf, SLVolumeItf, SLAndroidBufferQueue \n",
286            argv[0]);
287    fprintf(stdout, "and AudioPlayer with SL_DATALOCATOR_ANDROIDBUFFERQUEUE source / OutputMix sink\n");
288    fprintf(stdout, "Plays a sound and stops after its reported duration\n\n");
289
290    if (argc == 1) {
291        fprintf(stdout, "Usage: %s path \n\t%s url\n", argv[0], argv[0]);
292        fprintf(stdout, "Example: \"%s /sdcard/my.mp3\"  or \"%s file:///sdcard/my.mp3\"\n",
293                argv[0], argv[0]);
294        exit(EXIT_FAILURE);
295    }
296
297    SLEngineOption EngineOption[] = {
298            {(SLuint32) SL_ENGINEOPTION_THREADSAFE,
299            (SLuint32) SL_BOOLEAN_TRUE}};
300
301    res = slCreateEngine( &sl, 1, EngineOption, 0, NULL, NULL);
302    CheckErr(res);
303    /* Realizing the SL Engine in synchronous mode. */
304    res = (*sl)->Realize(sl, SL_BOOLEAN_FALSE);
305    CheckErr(res);
306
307    TestPlayStream(sl, argv[1]);
308
309    /* Shutdown OpenSL ES */
310    (*sl)->Destroy(sl);
311
312    return EXIT_SUCCESS;
313}
314