1 /* 2 ** 3 ** Copyright 2007, The Android Open Source Project 4 ** 5 ** Licensed under the Apache License, Version 2.0 (the "License"); 6 ** you may not use this file except in compliance with the License. 7 ** You may obtain a copy of the License at 8 ** 9 ** http://www.apache.org/licenses/LICENSE-2.0 10 ** 11 ** Unless required by applicable law or agreed to in writing, software 12 ** distributed under the License is distributed on an "AS IS" BASIS, 13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 ** See the License for the specific language governing permissions and 15 ** limitations under the License. 16 */ 17 18 //#define LOG_NDEBUG 0 19 #define LOG_TAG "MediaPlayer-JNI" 20 #include "utils/Log.h" 21 22 #include <media/mediaplayer.h> 23 #include <media/MediaPlayerInterface.h> 24 #include <stdio.h> 25 #include <assert.h> 26 #include <limits.h> 27 #include <unistd.h> 28 #include <fcntl.h> 29 #include <utils/threads.h> 30 #include "jni.h" 31 #include "JNIHelp.h" 32 #include "android_runtime/AndroidRuntime.h" 33 #include "android_runtime/android_view_Surface.h" 34 #include "utils/Errors.h" // for status_t 35 #include "utils/KeyedVector.h" 36 #include "utils/String8.h" 37 #include "android_media_Utils.h" 38 39 #include "android_util_Binder.h" 40 #include <binder/Parcel.h> 41 #include <gui/ISurfaceTexture.h> 42 #include <surfaceflinger/Surface.h> 43 #include <binder/IPCThreadState.h> 44 #include <binder/IServiceManager.h> 45 46 // ---------------------------------------------------------------------------- 47 48 using namespace android; 49 50 // ---------------------------------------------------------------------------- 51 52 struct fields_t { 53 jfieldID context; 54 jfieldID surface_texture; 55 56 jmethodID post_event; 57 }; 58 static fields_t fields; 59 60 static Mutex sLock; 61 62 // ---------------------------------------------------------------------------- 63 // ref-counted object for callbacks 64 class JNIMediaPlayerListener: public MediaPlayerListener 65 { 66 public: 67 JNIMediaPlayerListener(JNIEnv* env, jobject thiz, jobject weak_thiz); 68 ~JNIMediaPlayerListener(); 69 virtual void notify(int msg, int ext1, int ext2, const Parcel *obj = NULL); 70 private: 71 JNIMediaPlayerListener(); 72 jclass mClass; // Reference to MediaPlayer class 73 jobject mObject; // Weak ref to MediaPlayer Java object to call on 74 }; 75 76 JNIMediaPlayerListener::JNIMediaPlayerListener(JNIEnv* env, jobject thiz, jobject weak_thiz) 77 { 78 79 // Hold onto the MediaPlayer class for use in calling the static method 80 // that posts events to the application thread. 81 jclass clazz = env->GetObjectClass(thiz); 82 if (clazz == NULL) { 83 LOGE("Can't find android/media/MediaPlayer"); 84 jniThrowException(env, "java/lang/Exception", NULL); 85 return; 86 } 87 mClass = (jclass)env->NewGlobalRef(clazz); 88 89 // We use a weak reference so the MediaPlayer object can be garbage collected. 90 // The reference is only used as a proxy for callbacks. 91 mObject = env->NewGlobalRef(weak_thiz); 92 } 93 94 JNIMediaPlayerListener::~JNIMediaPlayerListener() 95 { 96 // remove global references 97 JNIEnv *env = AndroidRuntime::getJNIEnv(); 98 env->DeleteGlobalRef(mObject); 99 env->DeleteGlobalRef(mClass); 100 } 101 102 void JNIMediaPlayerListener::notify(int msg, int ext1, int ext2, const Parcel *obj) 103 { 104 JNIEnv *env = AndroidRuntime::getJNIEnv(); 105 if (obj && obj->dataSize() > 0) { 106 jbyteArray jArray = env->NewByteArray(obj->dataSize()); 107 if (jArray != NULL) { 108 jbyte *nArray = env->GetByteArrayElements(jArray, NULL); 109 memcpy(nArray, obj->data(), obj->dataSize()); 110 env->ReleaseByteArrayElements(jArray, nArray, 0); 111 env->CallStaticVoidMethod(mClass, fields.post_event, mObject, 112 msg, ext1, ext2, jArray); 113 env->DeleteLocalRef(jArray); 114 } 115 } else { 116 env->CallStaticVoidMethod(mClass, fields.post_event, mObject, 117 msg, ext1, ext2, NULL); 118 } 119 } 120 121 // ---------------------------------------------------------------------------- 122 123 static sp<MediaPlayer> getMediaPlayer(JNIEnv* env, jobject thiz) 124 { 125 Mutex::Autolock l(sLock); 126 MediaPlayer* const p = (MediaPlayer*)env->GetIntField(thiz, fields.context); 127 return sp<MediaPlayer>(p); 128 } 129 130 static sp<MediaPlayer> setMediaPlayer(JNIEnv* env, jobject thiz, const sp<MediaPlayer>& player) 131 { 132 Mutex::Autolock l(sLock); 133 sp<MediaPlayer> old = (MediaPlayer*)env->GetIntField(thiz, fields.context); 134 if (player.get()) { 135 player->incStrong(thiz); 136 } 137 if (old != 0) { 138 old->decStrong(thiz); 139 } 140 env->SetIntField(thiz, fields.context, (int)player.get()); 141 return old; 142 } 143 144 // If exception is NULL and opStatus is not OK, this method sends an error 145 // event to the client application; otherwise, if exception is not NULL and 146 // opStatus is not OK, this method throws the given exception to the client 147 // application. 148 static void process_media_player_call(JNIEnv *env, jobject thiz, status_t opStatus, const char* exception, const char *message) 149 { 150 if (exception == NULL) { // Don't throw exception. Instead, send an event. 151 if (opStatus != (status_t) OK) { 152 sp<MediaPlayer> mp = getMediaPlayer(env, thiz); 153 if (mp != 0) mp->notify(MEDIA_ERROR, opStatus, 0); 154 } 155 } else { // Throw exception! 156 if ( opStatus == (status_t) INVALID_OPERATION ) { 157 jniThrowException(env, "java/lang/IllegalStateException", NULL); 158 } else if ( opStatus == (status_t) PERMISSION_DENIED ) { 159 jniThrowException(env, "java/lang/SecurityException", NULL); 160 } else if ( opStatus != (status_t) OK ) { 161 if (strlen(message) > 230) { 162 // if the message is too long, don't bother displaying the status code 163 jniThrowException( env, exception, message); 164 } else { 165 char msg[256]; 166 // append the status code to the message 167 sprintf(msg, "%s: status=0x%X", message, opStatus); 168 jniThrowException( env, exception, msg); 169 } 170 } 171 } 172 } 173 174 static void 175 android_media_MediaPlayer_setDataSourceAndHeaders( 176 JNIEnv *env, jobject thiz, jstring path, 177 jobjectArray keys, jobjectArray values) { 178 179 sp<MediaPlayer> mp = getMediaPlayer(env, thiz); 180 if (mp == NULL ) { 181 jniThrowException(env, "java/lang/IllegalStateException", NULL); 182 return; 183 } 184 185 if (path == NULL) { 186 jniThrowException(env, "java/lang/IllegalArgumentException", NULL); 187 return; 188 } 189 190 const char *tmp = env->GetStringUTFChars(path, NULL); 191 if (tmp == NULL) { // Out of memory 192 return; 193 } 194 LOGV("setDataSource: path %s", tmp); 195 196 String8 pathStr(tmp); 197 env->ReleaseStringUTFChars(path, tmp); 198 tmp = NULL; 199 200 // We build a KeyedVector out of the key and val arrays 201 KeyedVector<String8, String8> headersVector; 202 if (!ConvertKeyValueArraysToKeyedVector( 203 env, keys, values, &headersVector)) { 204 return; 205 } 206 207 status_t opStatus = 208 mp->setDataSource( 209 pathStr, 210 headersVector.size() > 0? &headersVector : NULL); 211 212 process_media_player_call( 213 env, thiz, opStatus, "java/io/IOException", 214 "setDataSource failed." ); 215 } 216 217 static void 218 android_media_MediaPlayer_setDataSource(JNIEnv *env, jobject thiz, jstring path) 219 { 220 android_media_MediaPlayer_setDataSourceAndHeaders(env, thiz, path, NULL, NULL); 221 } 222 223 static void 224 android_media_MediaPlayer_setDataSourceFD(JNIEnv *env, jobject thiz, jobject fileDescriptor, jlong offset, jlong length) 225 { 226 sp<MediaPlayer> mp = getMediaPlayer(env, thiz); 227 if (mp == NULL ) { 228 jniThrowException(env, "java/lang/IllegalStateException", NULL); 229 return; 230 } 231 232 if (fileDescriptor == NULL) { 233 jniThrowException(env, "java/lang/IllegalArgumentException", NULL); 234 return; 235 } 236 int fd = jniGetFDFromFileDescriptor(env, fileDescriptor); 237 LOGV("setDataSourceFD: fd %d", fd); 238 process_media_player_call( env, thiz, mp->setDataSource(fd, offset, length), "java/io/IOException", "setDataSourceFD failed." ); 239 } 240 241 static sp<ISurfaceTexture> 242 getVideoSurfaceTexture(JNIEnv* env, jobject thiz) { 243 ISurfaceTexture * const p = (ISurfaceTexture*)env->GetIntField(thiz, fields.surface_texture); 244 return sp<ISurfaceTexture>(p); 245 } 246 247 static void 248 decVideoSurfaceRef(JNIEnv *env, jobject thiz) 249 { 250 sp<MediaPlayer> mp = getMediaPlayer(env, thiz); 251 if (mp == NULL) { 252 return; 253 } 254 255 sp<ISurfaceTexture> old_st = getVideoSurfaceTexture(env, thiz); 256 if (old_st != NULL) { 257 old_st->decStrong(thiz); 258 } 259 } 260 261 static void 262 setVideoSurface(JNIEnv *env, jobject thiz, jobject jsurface, jboolean mediaPlayerMustBeAlive) 263 { 264 sp<MediaPlayer> mp = getMediaPlayer(env, thiz); 265 if (mp == NULL) { 266 if (mediaPlayerMustBeAlive) { 267 jniThrowException(env, "java/lang/IllegalStateException", NULL); 268 } 269 return; 270 } 271 272 decVideoSurfaceRef(env, thiz); 273 274 sp<ISurfaceTexture> new_st; 275 if (jsurface) { 276 sp<Surface> surface(Surface_getSurface(env, jsurface)); 277 if (surface != NULL) { 278 new_st = surface->getSurfaceTexture(); 279 new_st->incStrong(thiz); 280 } else { 281 jniThrowException(env, "java/lang/IllegalArgumentException", 282 "The surface has been released"); 283 return; 284 } 285 } 286 287 env->SetIntField(thiz, fields.surface_texture, (int)new_st.get()); 288 289 // This will fail if the media player has not been initialized yet. This 290 // can be the case if setDisplay() on MediaPlayer.java has been called 291 // before setDataSource(). The redundant call to setVideoSurfaceTexture() 292 // in prepare/prepareAsync covers for this case. 293 mp->setVideoSurfaceTexture(new_st); 294 } 295 296 static void 297 android_media_MediaPlayer_setVideoSurface(JNIEnv *env, jobject thiz, jobject jsurface) 298 { 299 setVideoSurface(env, thiz, jsurface, true /* mediaPlayerMustBeAlive */); 300 } 301 302 static void 303 android_media_MediaPlayer_prepare(JNIEnv *env, jobject thiz) 304 { 305 sp<MediaPlayer> mp = getMediaPlayer(env, thiz); 306 if (mp == NULL ) { 307 jniThrowException(env, "java/lang/IllegalStateException", NULL); 308 return; 309 } 310 311 // Handle the case where the display surface was set before the mp was 312 // initialized. We try again to make it stick. 313 sp<ISurfaceTexture> st = getVideoSurfaceTexture(env, thiz); 314 mp->setVideoSurfaceTexture(st); 315 316 process_media_player_call( env, thiz, mp->prepare(), "java/io/IOException", "Prepare failed." ); 317 } 318 319 static void 320 android_media_MediaPlayer_prepareAsync(JNIEnv *env, jobject thiz) 321 { 322 sp<MediaPlayer> mp = getMediaPlayer(env, thiz); 323 if (mp == NULL ) { 324 jniThrowException(env, "java/lang/IllegalStateException", NULL); 325 return; 326 } 327 328 // Handle the case where the display surface was set before the mp was 329 // initialized. We try again to make it stick. 330 sp<ISurfaceTexture> st = getVideoSurfaceTexture(env, thiz); 331 mp->setVideoSurfaceTexture(st); 332 333 process_media_player_call( env, thiz, mp->prepareAsync(), "java/io/IOException", "Prepare Async failed." ); 334 } 335 336 static void 337 android_media_MediaPlayer_start(JNIEnv *env, jobject thiz) 338 { 339 LOGV("start"); 340 sp<MediaPlayer> mp = getMediaPlayer(env, thiz); 341 if (mp == NULL ) { 342 jniThrowException(env, "java/lang/IllegalStateException", NULL); 343 return; 344 } 345 process_media_player_call( env, thiz, mp->start(), NULL, NULL ); 346 } 347 348 static void 349 android_media_MediaPlayer_stop(JNIEnv *env, jobject thiz) 350 { 351 LOGV("stop"); 352 sp<MediaPlayer> mp = getMediaPlayer(env, thiz); 353 if (mp == NULL ) { 354 jniThrowException(env, "java/lang/IllegalStateException", NULL); 355 return; 356 } 357 process_media_player_call( env, thiz, mp->stop(), NULL, NULL ); 358 } 359 360 static void 361 android_media_MediaPlayer_pause(JNIEnv *env, jobject thiz) 362 { 363 LOGV("pause"); 364 sp<MediaPlayer> mp = getMediaPlayer(env, thiz); 365 if (mp == NULL ) { 366 jniThrowException(env, "java/lang/IllegalStateException", NULL); 367 return; 368 } 369 process_media_player_call( env, thiz, mp->pause(), NULL, NULL ); 370 } 371 372 static jboolean 373 android_media_MediaPlayer_isPlaying(JNIEnv *env, jobject thiz) 374 { 375 sp<MediaPlayer> mp = getMediaPlayer(env, thiz); 376 if (mp == NULL ) { 377 jniThrowException(env, "java/lang/IllegalStateException", NULL); 378 return false; 379 } 380 const jboolean is_playing = mp->isPlaying(); 381 382 LOGV("isPlaying: %d", is_playing); 383 return is_playing; 384 } 385 386 static void 387 android_media_MediaPlayer_seekTo(JNIEnv *env, jobject thiz, int msec) 388 { 389 sp<MediaPlayer> mp = getMediaPlayer(env, thiz); 390 if (mp == NULL ) { 391 jniThrowException(env, "java/lang/IllegalStateException", NULL); 392 return; 393 } 394 LOGV("seekTo: %d(msec)", msec); 395 process_media_player_call( env, thiz, mp->seekTo(msec), NULL, NULL ); 396 } 397 398 static int 399 android_media_MediaPlayer_getVideoWidth(JNIEnv *env, jobject thiz) 400 { 401 sp<MediaPlayer> mp = getMediaPlayer(env, thiz); 402 if (mp == NULL ) { 403 jniThrowException(env, "java/lang/IllegalStateException", NULL); 404 return 0; 405 } 406 int w; 407 if (0 != mp->getVideoWidth(&w)) { 408 LOGE("getVideoWidth failed"); 409 w = 0; 410 } 411 LOGV("getVideoWidth: %d", w); 412 return w; 413 } 414 415 static int 416 android_media_MediaPlayer_getVideoHeight(JNIEnv *env, jobject thiz) 417 { 418 sp<MediaPlayer> mp = getMediaPlayer(env, thiz); 419 if (mp == NULL ) { 420 jniThrowException(env, "java/lang/IllegalStateException", NULL); 421 return 0; 422 } 423 int h; 424 if (0 != mp->getVideoHeight(&h)) { 425 LOGE("getVideoHeight failed"); 426 h = 0; 427 } 428 LOGV("getVideoHeight: %d", h); 429 return h; 430 } 431 432 433 static int 434 android_media_MediaPlayer_getCurrentPosition(JNIEnv *env, jobject thiz) 435 { 436 sp<MediaPlayer> mp = getMediaPlayer(env, thiz); 437 if (mp == NULL ) { 438 jniThrowException(env, "java/lang/IllegalStateException", NULL); 439 return 0; 440 } 441 int msec; 442 process_media_player_call( env, thiz, mp->getCurrentPosition(&msec), NULL, NULL ); 443 LOGV("getCurrentPosition: %d (msec)", msec); 444 return msec; 445 } 446 447 static int 448 android_media_MediaPlayer_getDuration(JNIEnv *env, jobject thiz) 449 { 450 sp<MediaPlayer> mp = getMediaPlayer(env, thiz); 451 if (mp == NULL ) { 452 jniThrowException(env, "java/lang/IllegalStateException", NULL); 453 return 0; 454 } 455 int msec; 456 process_media_player_call( env, thiz, mp->getDuration(&msec), NULL, NULL ); 457 LOGV("getDuration: %d (msec)", msec); 458 return msec; 459 } 460 461 static void 462 android_media_MediaPlayer_reset(JNIEnv *env, jobject thiz) 463 { 464 LOGV("reset"); 465 sp<MediaPlayer> mp = getMediaPlayer(env, thiz); 466 if (mp == NULL ) { 467 jniThrowException(env, "java/lang/IllegalStateException", NULL); 468 return; 469 } 470 process_media_player_call( env, thiz, mp->reset(), NULL, NULL ); 471 } 472 473 static void 474 android_media_MediaPlayer_setAudioStreamType(JNIEnv *env, jobject thiz, int streamtype) 475 { 476 LOGV("setAudioStreamType: %d", streamtype); 477 sp<MediaPlayer> mp = getMediaPlayer(env, thiz); 478 if (mp == NULL ) { 479 jniThrowException(env, "java/lang/IllegalStateException", NULL); 480 return; 481 } 482 process_media_player_call( env, thiz, mp->setAudioStreamType(streamtype) , NULL, NULL ); 483 } 484 485 static void 486 android_media_MediaPlayer_setLooping(JNIEnv *env, jobject thiz, jboolean looping) 487 { 488 LOGV("setLooping: %d", looping); 489 sp<MediaPlayer> mp = getMediaPlayer(env, thiz); 490 if (mp == NULL ) { 491 jniThrowException(env, "java/lang/IllegalStateException", NULL); 492 return; 493 } 494 process_media_player_call( env, thiz, mp->setLooping(looping), NULL, NULL ); 495 } 496 497 static jboolean 498 android_media_MediaPlayer_isLooping(JNIEnv *env, jobject thiz) 499 { 500 LOGV("isLooping"); 501 sp<MediaPlayer> mp = getMediaPlayer(env, thiz); 502 if (mp == NULL ) { 503 jniThrowException(env, "java/lang/IllegalStateException", NULL); 504 return false; 505 } 506 return mp->isLooping(); 507 } 508 509 static void 510 android_media_MediaPlayer_setVolume(JNIEnv *env, jobject thiz, float leftVolume, float rightVolume) 511 { 512 LOGV("setVolume: left %f right %f", leftVolume, rightVolume); 513 sp<MediaPlayer> mp = getMediaPlayer(env, thiz); 514 if (mp == NULL ) { 515 jniThrowException(env, "java/lang/IllegalStateException", NULL); 516 return; 517 } 518 process_media_player_call( env, thiz, mp->setVolume(leftVolume, rightVolume), NULL, NULL ); 519 } 520 521 // FIXME: deprecated 522 static jobject 523 android_media_MediaPlayer_getFrameAt(JNIEnv *env, jobject thiz, jint msec) 524 { 525 return NULL; 526 } 527 528 529 // Sends the request and reply parcels to the media player via the 530 // binder interface. 531 static jint 532 android_media_MediaPlayer_invoke(JNIEnv *env, jobject thiz, 533 jobject java_request, jobject java_reply) 534 { 535 sp<MediaPlayer> media_player = getMediaPlayer(env, thiz); 536 if (media_player == NULL ) { 537 jniThrowException(env, "java/lang/IllegalStateException", NULL); 538 return UNKNOWN_ERROR; 539 } 540 541 542 Parcel *request = parcelForJavaObject(env, java_request); 543 Parcel *reply = parcelForJavaObject(env, java_reply); 544 545 // Don't use process_media_player_call which use the async loop to 546 // report errors, instead returns the status. 547 return media_player->invoke(*request, reply); 548 } 549 550 // Sends the new filter to the client. 551 static jint 552 android_media_MediaPlayer_setMetadataFilter(JNIEnv *env, jobject thiz, jobject request) 553 { 554 sp<MediaPlayer> media_player = getMediaPlayer(env, thiz); 555 if (media_player == NULL ) { 556 jniThrowException(env, "java/lang/IllegalStateException", NULL); 557 return UNKNOWN_ERROR; 558 } 559 560 Parcel *filter = parcelForJavaObject(env, request); 561 562 if (filter == NULL ) { 563 jniThrowException(env, "java/lang/RuntimeException", "Filter is null"); 564 return UNKNOWN_ERROR; 565 } 566 567 return media_player->setMetadataFilter(*filter); 568 } 569 570 static jboolean 571 android_media_MediaPlayer_getMetadata(JNIEnv *env, jobject thiz, jboolean update_only, 572 jboolean apply_filter, jobject reply) 573 { 574 sp<MediaPlayer> media_player = getMediaPlayer(env, thiz); 575 if (media_player == NULL ) { 576 jniThrowException(env, "java/lang/IllegalStateException", NULL); 577 return false; 578 } 579 580 Parcel *metadata = parcelForJavaObject(env, reply); 581 582 if (metadata == NULL ) { 583 jniThrowException(env, "java/lang/RuntimeException", "Reply parcel is null"); 584 return false; 585 } 586 587 metadata->freeData(); 588 // On return metadata is positioned at the beginning of the 589 // metadata. Note however that the parcel actually starts with the 590 // return code so you should not rewind the parcel using 591 // setDataPosition(0). 592 return media_player->getMetadata(update_only, apply_filter, metadata) == OK; 593 } 594 595 // This function gets some field IDs, which in turn causes class initialization. 596 // It is called from a static block in MediaPlayer, which won't run until the 597 // first time an instance of this class is used. 598 static void 599 android_media_MediaPlayer_native_init(JNIEnv *env) 600 { 601 jclass clazz; 602 603 clazz = env->FindClass("android/media/MediaPlayer"); 604 if (clazz == NULL) { 605 return; 606 } 607 608 fields.context = env->GetFieldID(clazz, "mNativeContext", "I"); 609 if (fields.context == NULL) { 610 return; 611 } 612 613 fields.post_event = env->GetStaticMethodID(clazz, "postEventFromNative", 614 "(Ljava/lang/Object;IIILjava/lang/Object;)V"); 615 if (fields.post_event == NULL) { 616 return; 617 } 618 619 fields.surface_texture = env->GetFieldID(clazz, "mNativeSurfaceTexture", "I"); 620 if (fields.surface_texture == NULL) { 621 return; 622 } 623 } 624 625 static void 626 android_media_MediaPlayer_native_setup(JNIEnv *env, jobject thiz, jobject weak_this) 627 { 628 LOGV("native_setup"); 629 sp<MediaPlayer> mp = new MediaPlayer(); 630 if (mp == NULL) { 631 jniThrowException(env, "java/lang/RuntimeException", "Out of memory"); 632 return; 633 } 634 635 // create new listener and give it to MediaPlayer 636 sp<JNIMediaPlayerListener> listener = new JNIMediaPlayerListener(env, thiz, weak_this); 637 mp->setListener(listener); 638 639 // Stow our new C++ MediaPlayer in an opaque field in the Java object. 640 setMediaPlayer(env, thiz, mp); 641 } 642 643 static void 644 android_media_MediaPlayer_release(JNIEnv *env, jobject thiz) 645 { 646 LOGV("release"); 647 decVideoSurfaceRef(env, thiz); 648 sp<MediaPlayer> mp = setMediaPlayer(env, thiz, 0); 649 if (mp != NULL) { 650 // this prevents native callbacks after the object is released 651 mp->setListener(0); 652 mp->disconnect(); 653 } 654 } 655 656 static void 657 android_media_MediaPlayer_native_finalize(JNIEnv *env, jobject thiz) 658 { 659 LOGV("native_finalize"); 660 sp<MediaPlayer> mp = getMediaPlayer(env, thiz); 661 if (mp != NULL) { 662 LOGW("MediaPlayer finalized without being released"); 663 } 664 android_media_MediaPlayer_release(env, thiz); 665 } 666 667 static void android_media_MediaPlayer_set_audio_session_id(JNIEnv *env, jobject thiz, jint sessionId) { 668 LOGV("set_session_id(): %d", sessionId); 669 sp<MediaPlayer> mp = getMediaPlayer(env, thiz); 670 if (mp == NULL ) { 671 jniThrowException(env, "java/lang/IllegalStateException", NULL); 672 return; 673 } 674 process_media_player_call( env, thiz, mp->setAudioSessionId(sessionId), NULL, NULL ); 675 } 676 677 static jint android_media_MediaPlayer_get_audio_session_id(JNIEnv *env, jobject thiz) { 678 LOGV("get_session_id()"); 679 sp<MediaPlayer> mp = getMediaPlayer(env, thiz); 680 if (mp == NULL ) { 681 jniThrowException(env, "java/lang/IllegalStateException", NULL); 682 return 0; 683 } 684 685 return mp->getAudioSessionId(); 686 } 687 688 static void 689 android_media_MediaPlayer_setAuxEffectSendLevel(JNIEnv *env, jobject thiz, jfloat level) 690 { 691 LOGV("setAuxEffectSendLevel: level %f", level); 692 sp<MediaPlayer> mp = getMediaPlayer(env, thiz); 693 if (mp == NULL ) { 694 jniThrowException(env, "java/lang/IllegalStateException", NULL); 695 return; 696 } 697 process_media_player_call( env, thiz, mp->setAuxEffectSendLevel(level), NULL, NULL ); 698 } 699 700 static void android_media_MediaPlayer_attachAuxEffect(JNIEnv *env, jobject thiz, jint effectId) { 701 LOGV("attachAuxEffect(): %d", effectId); 702 sp<MediaPlayer> mp = getMediaPlayer(env, thiz); 703 if (mp == NULL ) { 704 jniThrowException(env, "java/lang/IllegalStateException", NULL); 705 return; 706 } 707 process_media_player_call( env, thiz, mp->attachAuxEffect(effectId), NULL, NULL ); 708 } 709 710 static jint 711 android_media_MediaPlayer_pullBatteryData(JNIEnv *env, jobject thiz, jobject java_reply) 712 { 713 sp<IBinder> binder = defaultServiceManager()->getService(String16("media.player")); 714 sp<IMediaPlayerService> service = interface_cast<IMediaPlayerService>(binder); 715 if (service.get() == NULL) { 716 jniThrowException(env, "java/lang/RuntimeException", "cannot get MediaPlayerService"); 717 return UNKNOWN_ERROR; 718 } 719 720 Parcel *reply = parcelForJavaObject(env, java_reply); 721 722 return service->pullBatteryData(reply); 723 } 724 725 static jboolean 726 android_media_MediaPlayer_setParameter(JNIEnv *env, jobject thiz, jint key, jobject java_request) 727 { 728 LOGV("setParameter: key %d", key); 729 sp<MediaPlayer> mp = getMediaPlayer(env, thiz); 730 if (mp == NULL ) { 731 jniThrowException(env, "java/lang/IllegalStateException", NULL); 732 return false; 733 } 734 735 Parcel *request = parcelForJavaObject(env, java_request); 736 status_t err = mp->setParameter(key, *request); 737 if (err == OK) { 738 return true; 739 } else { 740 return false; 741 } 742 } 743 744 static void 745 android_media_MediaPlayer_getParameter(JNIEnv *env, jobject thiz, jint key, jobject java_reply) 746 { 747 LOGV("getParameter: key %d", key); 748 sp<MediaPlayer> mp = getMediaPlayer(env, thiz); 749 if (mp == NULL ) { 750 jniThrowException(env, "java/lang/IllegalStateException", NULL); 751 return; 752 } 753 754 Parcel *reply = parcelForJavaObject(env, java_reply); 755 process_media_player_call(env, thiz, mp->getParameter(key, reply), NULL, NULL ); 756 } 757 758 // ---------------------------------------------------------------------------- 759 760 static JNINativeMethod gMethods[] = { 761 {"setDataSource", "(Ljava/lang/String;)V", (void *)android_media_MediaPlayer_setDataSource}, 762 763 { 764 "_setDataSource", 765 "(Ljava/lang/String;[Ljava/lang/String;[Ljava/lang/String;)V", 766 (void *)android_media_MediaPlayer_setDataSourceAndHeaders 767 }, 768 769 {"setDataSource", "(Ljava/io/FileDescriptor;JJ)V", (void *)android_media_MediaPlayer_setDataSourceFD}, 770 {"_setVideoSurface", "(Landroid/view/Surface;)V", (void *)android_media_MediaPlayer_setVideoSurface}, 771 {"prepare", "()V", (void *)android_media_MediaPlayer_prepare}, 772 {"prepareAsync", "()V", (void *)android_media_MediaPlayer_prepareAsync}, 773 {"_start", "()V", (void *)android_media_MediaPlayer_start}, 774 {"_stop", "()V", (void *)android_media_MediaPlayer_stop}, 775 {"getVideoWidth", "()I", (void *)android_media_MediaPlayer_getVideoWidth}, 776 {"getVideoHeight", "()I", (void *)android_media_MediaPlayer_getVideoHeight}, 777 {"seekTo", "(I)V", (void *)android_media_MediaPlayer_seekTo}, 778 {"_pause", "()V", (void *)android_media_MediaPlayer_pause}, 779 {"isPlaying", "()Z", (void *)android_media_MediaPlayer_isPlaying}, 780 {"getCurrentPosition", "()I", (void *)android_media_MediaPlayer_getCurrentPosition}, 781 {"getDuration", "()I", (void *)android_media_MediaPlayer_getDuration}, 782 {"_release", "()V", (void *)android_media_MediaPlayer_release}, 783 {"_reset", "()V", (void *)android_media_MediaPlayer_reset}, 784 {"setAudioStreamType", "(I)V", (void *)android_media_MediaPlayer_setAudioStreamType}, 785 {"setLooping", "(Z)V", (void *)android_media_MediaPlayer_setLooping}, 786 {"isLooping", "()Z", (void *)android_media_MediaPlayer_isLooping}, 787 {"setVolume", "(FF)V", (void *)android_media_MediaPlayer_setVolume}, 788 {"getFrameAt", "(I)Landroid/graphics/Bitmap;", (void *)android_media_MediaPlayer_getFrameAt}, 789 {"native_invoke", "(Landroid/os/Parcel;Landroid/os/Parcel;)I",(void *)android_media_MediaPlayer_invoke}, 790 {"native_setMetadataFilter", "(Landroid/os/Parcel;)I", (void *)android_media_MediaPlayer_setMetadataFilter}, 791 {"native_getMetadata", "(ZZLandroid/os/Parcel;)Z", (void *)android_media_MediaPlayer_getMetadata}, 792 {"native_init", "()V", (void *)android_media_MediaPlayer_native_init}, 793 {"native_setup", "(Ljava/lang/Object;)V", (void *)android_media_MediaPlayer_native_setup}, 794 {"native_finalize", "()V", (void *)android_media_MediaPlayer_native_finalize}, 795 {"getAudioSessionId", "()I", (void *)android_media_MediaPlayer_get_audio_session_id}, 796 {"setAudioSessionId", "(I)V", (void *)android_media_MediaPlayer_set_audio_session_id}, 797 {"setAuxEffectSendLevel", "(F)V", (void *)android_media_MediaPlayer_setAuxEffectSendLevel}, 798 {"attachAuxEffect", "(I)V", (void *)android_media_MediaPlayer_attachAuxEffect}, 799 {"native_pullBatteryData", "(Landroid/os/Parcel;)I", (void *)android_media_MediaPlayer_pullBatteryData}, 800 {"setParameter", "(ILandroid/os/Parcel;)Z", (void *)android_media_MediaPlayer_setParameter}, 801 {"getParameter", "(ILandroid/os/Parcel;)V", (void *)android_media_MediaPlayer_getParameter}, 802 }; 803 804 static const char* const kClassPathName = "android/media/MediaPlayer"; 805 806 // This function only registers the native methods 807 static int register_android_media_MediaPlayer(JNIEnv *env) 808 { 809 return AndroidRuntime::registerNativeMethods(env, 810 "android/media/MediaPlayer", gMethods, NELEM(gMethods)); 811 } 812 813 extern int register_android_media_MediaMetadataRetriever(JNIEnv *env); 814 extern int register_android_media_MediaRecorder(JNIEnv *env); 815 extern int register_android_media_MediaScanner(JNIEnv *env); 816 extern int register_android_media_ResampleInputStream(JNIEnv *env); 817 extern int register_android_media_MediaProfiles(JNIEnv *env); 818 extern int register_android_media_AmrInputStream(JNIEnv *env); 819 extern int register_android_mtp_MtpDatabase(JNIEnv *env); 820 extern int register_android_mtp_MtpDevice(JNIEnv *env); 821 extern int register_android_mtp_MtpServer(JNIEnv *env); 822 823 jint JNI_OnLoad(JavaVM* vm, void* reserved) 824 { 825 JNIEnv* env = NULL; 826 jint result = -1; 827 828 if (vm->GetEnv((void**) &env, JNI_VERSION_1_4) != JNI_OK) { 829 LOGE("ERROR: GetEnv failed\n"); 830 goto bail; 831 } 832 assert(env != NULL); 833 834 if (register_android_media_MediaPlayer(env) < 0) { 835 LOGE("ERROR: MediaPlayer native registration failed\n"); 836 goto bail; 837 } 838 839 if (register_android_media_MediaRecorder(env) < 0) { 840 LOGE("ERROR: MediaRecorder native registration failed\n"); 841 goto bail; 842 } 843 844 if (register_android_media_MediaScanner(env) < 0) { 845 LOGE("ERROR: MediaScanner native registration failed\n"); 846 goto bail; 847 } 848 849 if (register_android_media_MediaMetadataRetriever(env) < 0) { 850 LOGE("ERROR: MediaMetadataRetriever native registration failed\n"); 851 goto bail; 852 } 853 854 if (register_android_media_AmrInputStream(env) < 0) { 855 LOGE("ERROR: AmrInputStream native registration failed\n"); 856 goto bail; 857 } 858 859 if (register_android_media_ResampleInputStream(env) < 0) { 860 LOGE("ERROR: ResampleInputStream native registration failed\n"); 861 goto bail; 862 } 863 864 if (register_android_media_MediaProfiles(env) < 0) { 865 LOGE("ERROR: MediaProfiles native registration failed"); 866 goto bail; 867 } 868 869 if (register_android_mtp_MtpDatabase(env) < 0) { 870 LOGE("ERROR: MtpDatabase native registration failed"); 871 goto bail; 872 } 873 874 if (register_android_mtp_MtpDevice(env) < 0) { 875 LOGE("ERROR: MtpDevice native registration failed"); 876 goto bail; 877 } 878 879 if (register_android_mtp_MtpServer(env) < 0) { 880 LOGE("ERROR: MtpServer native registration failed"); 881 goto bail; 882 } 883 884 /* success -- return valid version number */ 885 result = JNI_VERSION_1_4; 886 887 bail: 888 return result; 889 } 890 891 // KTHXBYE 892
