android_GenericPlayer.cpp revision 13837cf3f7be0eb8b1a9552bd99a89f98c987720 
1/*
2 * Copyright (C) 2011 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//#define USE_LOG SLAndroidLogLevel_Verbose
18
19#include "sles_allinclusive.h"
20
21namespace android {
22
23//--------------------------------------------------------------------------------------------------
24GenericPlayer::GenericPlayer(const AudioPlayback_Parameters* params) :
25        mDataLocatorType(kDataLocatorNone),
26        mNotifyClient(NULL),
27        mNotifyUser(NULL),
28        mStateFlags(0),
29        mLooperPriority(PRIORITY_DEFAULT),
30        mPlaybackParams(*params)
31{
32    SL_LOGI("GenericPlayer::GenericPlayer()");
33
34    mLooper = new android::ALooper();
35
36}
37
38
39GenericPlayer::~GenericPlayer() {
40    SL_LOGI("GenericPlayer::~GenericPlayer()");
41
42    mLooper->stop();
43    mLooper->unregisterHandler(id());
44    mLooper.clear();
45
46}
47
48
49void GenericPlayer::init(const notif_cbf_t cbf, void* notifUser) {
50    SL_LOGI("GenericPlayer::init()");
51
52    mNotifyClient = cbf;
53    mNotifyUser = notifUser;
54
55    mLooper->registerHandler(this);
56    mLooper->start(false /*runOnCallingThread*/, false /*canCallJava*/, mLooperPriority);
57}
58
59
60void GenericPlayer::setDataSource(const char *uri) {
61    resetDataLocator();
62
63    mDataLocator.uriRef = uri;
64
65    mDataLocatorType = kDataLocatorUri;
66}
67
68
69void GenericPlayer::setDataSource(int fd, int64_t offset, int64_t length) {
70    resetDataLocator();
71
72    mDataLocator.fdi.fd = fd;
73
74    struct stat sb;
75    int ret = fstat(fd, &sb);
76    if (ret != 0) {
77        SL_LOGE("GenericPlayer::setDataSource: fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
78        return;
79    }
80
81    if (offset >= sb.st_size) {
82        SL_LOGE("SfPlayer::setDataSource: invalid offset");
83        return;
84    }
85    mDataLocator.fdi.offset = offset;
86
87    if (PLAYER_FD_FIND_FILE_SIZE == length) {
88        mDataLocator.fdi.length = sb.st_size;
89    } else if (offset + length > sb.st_size) {
90        mDataLocator.fdi.length = sb.st_size - offset;
91    } else {
92        mDataLocator.fdi.length = length;
93    }
94
95    mDataLocatorType = kDataLocatorFd;
96}
97
98
99void GenericPlayer::prepare() {
100    SL_LOGI("GenericPlayer::prepare()");
101    sp<AMessage> msg = new AMessage(kWhatPrepare, id());
102    msg->post();
103}
104
105
106void GenericPlayer::play() {
107    SL_LOGI("GenericPlayer::play()");
108    sp<AMessage> msg = new AMessage(kWhatPlay, id());
109    msg->post();
110}
111
112
113void GenericPlayer::pause() {
114    SL_LOGI("GenericPlayer::prepare()");
115    sp<AMessage> msg = new AMessage(kWhatPause, id());
116    msg->post();
117}
118
119
120void GenericPlayer::stop() {
121    SL_LOGI("GenericPlayer::stop()");
122    (new AMessage(kWhatPause, id()))->post();
123
124    // after a stop, playback should resume from the start.
125    seek(0);
126}
127
128
129void GenericPlayer::seek(int64_t timeMsec) {
130    SL_LOGV("GenericPlayer::seek %lld", timeMsec);
131    sp<AMessage> msg = new AMessage(kWhatSeek, id());
132    msg->setInt64(WHATPARAM_SEEK_SEEKTIME_MS, timeMsec);
133    msg->post();
134}
135
136
137void GenericPlayer::loop(bool loop) {
138    sp<AMessage> msg = new AMessage(kWhatLoop, id());
139    msg->setInt32(WHATPARAM_LOOP_LOOPING, (int32_t)loop);
140    msg->post();
141}
142
143
144//--------------------------------------------------
145/*
146 * post-condition: mDataLocatorType == kDataLocatorNone
147 *
148 */
149void GenericPlayer::resetDataLocator() {
150    mDataLocatorType = kDataLocatorNone;
151}
152
153
154void GenericPlayer::notify(const char* event, int data, bool async) {
155    sp<AMessage> msg = new AMessage(kWhatNotif, id());
156    msg->setInt32(event, (int32_t)data);
157    if (async) {
158        msg->post();
159    } else {
160        this->onNotify(msg);
161    }
162}
163
164
165//--------------------------------------------------
166// AHandler implementation
167void GenericPlayer::onMessageReceived(const sp<AMessage> &msg) {
168    switch (msg->what()) {
169        case kWhatPrepare:
170            onPrepare();
171            break;
172
173        case kWhatNotif:
174            onNotify(msg);
175            break;
176
177        case kWhatPlay:
178            onPlay();
179            break;
180
181        case kWhatPause:
182            onPause();
183            break;
184
185        case kWhatSeek:
186            onSeek(msg);
187            break;
188
189        case kWhatLoop:
190            onLoop(msg);
191            break;
192
193        default:
194            TRESPASS();
195    }
196}
197
198
199//--------------------------------------------------
200// Event handlers
201void GenericPlayer::onPrepare() {
202    SL_LOGI("GenericPlayer::onPrepare()");
203    if (!(mStateFlags & kFlagPrepared)) {
204        mStateFlags |= kFlagPrepared;
205        notify(PLAYEREVENT_PREPARED, PLAYER_SUCCESS, false /*async*/);
206    }
207    SL_LOGI("GenericPlayer::onPrepare() done, mStateFlags=0x%x", mStateFlags);
208}
209
210
211void GenericPlayer::onNotify(const sp<AMessage> &msg) {
212    if (NULL == mNotifyClient) {
213        return;
214    }
215
216    int32_t val;
217    if (msg->findInt32(PLAYEREVENT_PREPARED, &val)) {
218        SL_LOGV("GenericPlayer notifying %s = %d", PLAYEREVENT_PREPARED, val);
219        mNotifyClient(kEventPrepared, val, mNotifyUser);
220    }
221}
222
223
224void GenericPlayer::onPlay() {
225    SL_LOGI("GenericPlayer::onPlay()");
226    if ((mStateFlags & kFlagPrepared)) {
227        SL_LOGI("starting player");
228        mStateFlags |= kFlagPlaying;
229    } else {
230        SL_LOGV("NOT starting player mStateFlags=0x%x", mStateFlags);
231    }
232}
233
234
235void GenericPlayer::onPause() {
236    SL_LOGI("GenericPlayer::onPause()");
237    if ((mStateFlags & kFlagPrepared)) {
238        mStateFlags &= ~kFlagPlaying;
239    }
240
241}
242
243
244void GenericPlayer::onSeek(const sp<AMessage> &msg) {
245    SL_LOGV("GenericPlayer::onSeek");
246}
247
248
249void GenericPlayer::onLoop(const sp<AMessage> &msg) {
250    SL_LOGV("GenericPlayer::onLoop");
251}
252
253} // namespace android
254