android_media_MediaExtractor.cpp revision 4eaa2938084353a54dc259466172909329a048cc 
1/*
2 * Copyright 2012, 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 LOG_NDEBUG 0
18#define LOG_TAG "MediaExtractor-JNI"
19#include <utils/Log.h>
20
21#include "android_media_MediaExtractor.h"
22
23#include "android_media_Utils.h"
24#include "android_runtime/AndroidRuntime.h"
25#include "android_runtime/Log.h"
26#include "jni.h"
27#include "JNIHelp.h"
28#include "android_media_MediaDataSource.h"
29
30#include <media/IMediaHTTPService.h>
31#include <media/hardware/CryptoAPI.h>
32#include <media/stagefright/foundation/ABuffer.h>
33#include <media/stagefright/foundation/ADebug.h>
34#include <media/stagefright/foundation/AMessage.h>
35#include <media/stagefright/DataSource.h>
36#include <media/stagefright/MediaErrors.h>
37#include <media/stagefright/MetaData.h>
38#include <media/stagefright/NuMediaExtractor.h>
39
40#include <nativehelper/ScopedLocalRef.h>
41
42#include "android_util_Binder.h"
43
44namespace android {
45
46struct fields_t {
47    jfieldID context;
48
49    jmethodID cryptoInfoSetID;
50};
51
52static fields_t gFields;
53
54JMediaExtractor::JMediaExtractor(JNIEnv *env, jobject thiz)
55    : mClass(NULL),
56      mObject(NULL) {
57    jclass clazz = env->GetObjectClass(thiz);
58    CHECK(clazz != NULL);
59
60    mClass = (jclass)env->NewGlobalRef(clazz);
61    mObject = env->NewWeakGlobalRef(thiz);
62
63    mImpl = new NuMediaExtractor;
64}
65
66JMediaExtractor::~JMediaExtractor() {
67    JNIEnv *env = AndroidRuntime::getJNIEnv();
68
69    env->DeleteWeakGlobalRef(mObject);
70    mObject = NULL;
71    env->DeleteGlobalRef(mClass);
72    mClass = NULL;
73}
74
75status_t JMediaExtractor::setDataSource(
76        const sp<IMediaHTTPService> &httpService,
77        const char *path,
78        const KeyedVector<String8, String8> *headers) {
79    return mImpl->setDataSource(httpService, path, headers);
80}
81
82status_t JMediaExtractor::setDataSource(int fd, off64_t offset, off64_t size) {
83    return mImpl->setDataSource(fd, offset, size);
84}
85
86status_t JMediaExtractor::setDataSource(const sp<DataSource> &datasource) {
87    return mImpl->setDataSource(datasource);
88}
89
90size_t JMediaExtractor::countTracks() const {
91    return mImpl->countTracks();
92}
93
94status_t JMediaExtractor::getTrackFormat(size_t index, jobject *format) const {
95    sp<AMessage> msg;
96    status_t err;
97    if ((err = mImpl->getTrackFormat(index, &msg)) != OK) {
98        return err;
99    }
100
101    JNIEnv *env = AndroidRuntime::getJNIEnv();
102
103    return ConvertMessageToMap(env, msg, format);
104}
105
106status_t JMediaExtractor::getFileFormat(jobject *format) const {
107    sp<AMessage> msg;
108    status_t err;
109    if ((err = mImpl->getFileFormat(&msg)) != OK) {
110        return err;
111    }
112
113    JNIEnv *env = AndroidRuntime::getJNIEnv();
114
115    return ConvertMessageToMap(env, msg, format);
116}
117
118status_t JMediaExtractor::selectTrack(size_t index) {
119    return mImpl->selectTrack(index);
120}
121
122status_t JMediaExtractor::unselectTrack(size_t index) {
123    return mImpl->unselectTrack(index);
124}
125
126status_t JMediaExtractor::seekTo(
127        int64_t timeUs, MediaSource::ReadOptions::SeekMode mode) {
128    return mImpl->seekTo(timeUs, mode);
129}
130
131status_t JMediaExtractor::advance() {
132    return mImpl->advance();
133}
134
135status_t JMediaExtractor::readSampleData(
136        jobject byteBuf, size_t offset, size_t *sampleSize) {
137    JNIEnv *env = AndroidRuntime::getJNIEnv();
138
139    void *dst = env->GetDirectBufferAddress(byteBuf);
140
141    size_t dstSize;
142    jbyteArray byteArray = NULL;
143
144    ScopedLocalRef<jclass> byteBufClass(env, env->FindClass("java/nio/ByteBuffer"));
145    CHECK(byteBufClass.get() != NULL);
146
147    if (dst == NULL) {
148        jmethodID arrayID =
149            env->GetMethodID(byteBufClass.get(), "array", "()[B");
150        CHECK(arrayID != NULL);
151
152        byteArray =
153            (jbyteArray)env->CallObjectMethod(byteBuf, arrayID);
154
155        if (byteArray == NULL) {
156            return INVALID_OPERATION;
157        }
158
159        jboolean isCopy;
160        dst = env->GetByteArrayElements(byteArray, &isCopy);
161
162        dstSize = (size_t) env->GetArrayLength(byteArray);
163    } else {
164        dstSize = (size_t) env->GetDirectBufferCapacity(byteBuf);
165    }
166
167    if (dstSize < offset) {
168        if (byteArray != NULL) {
169            env->ReleaseByteArrayElements(byteArray, (jbyte *)dst, 0);
170        }
171
172        return -ERANGE;
173    }
174
175    sp<ABuffer> buffer = new ABuffer((char *)dst + offset, dstSize - offset);
176
177    status_t err = mImpl->readSampleData(buffer);
178
179    if (byteArray != NULL) {
180        env->ReleaseByteArrayElements(byteArray, (jbyte *)dst, 0);
181    }
182
183    if (err != OK) {
184        return err;
185    }
186
187    *sampleSize = buffer->size();
188
189    jmethodID positionID = env->GetMethodID(
190            byteBufClass.get(), "position", "(I)Ljava/nio/Buffer;");
191
192    CHECK(positionID != NULL);
193
194    jmethodID limitID = env->GetMethodID(
195            byteBufClass.get(), "limit", "(I)Ljava/nio/Buffer;");
196
197    CHECK(limitID != NULL);
198
199    jobject me = env->CallObjectMethod(
200            byteBuf, limitID, offset + *sampleSize);
201    env->DeleteLocalRef(me);
202    me = env->CallObjectMethod(
203            byteBuf, positionID, offset);
204    env->DeleteLocalRef(me);
205    me = NULL;
206
207    return OK;
208}
209
210status_t JMediaExtractor::getSampleTrackIndex(size_t *trackIndex) {
211    return mImpl->getSampleTrackIndex(trackIndex);
212}
213
214status_t JMediaExtractor::getSampleTime(int64_t *sampleTimeUs) {
215    return mImpl->getSampleTime(sampleTimeUs);
216}
217
218status_t JMediaExtractor::getSampleFlags(uint32_t *sampleFlags) {
219    *sampleFlags = 0;
220
221    sp<MetaData> meta;
222    status_t err = mImpl->getSampleMeta(&meta);
223
224    if (err != OK) {
225        return err;
226    }
227
228    int32_t val;
229    if (meta->findInt32(kKeyIsSyncFrame, &val) && val != 0) {
230        (*sampleFlags) |= NuMediaExtractor::SAMPLE_FLAG_SYNC;
231    }
232
233    uint32_t type;
234    const void *data;
235    size_t size;
236    if (meta->findData(kKeyEncryptedSizes, &type, &data, &size)) {
237        (*sampleFlags) |= NuMediaExtractor::SAMPLE_FLAG_ENCRYPTED;
238    }
239
240    return OK;
241}
242
243status_t JMediaExtractor::getSampleMeta(sp<MetaData> *sampleMeta) {
244    return mImpl->getSampleMeta(sampleMeta);
245}
246
247bool JMediaExtractor::getCachedDuration(int64_t *durationUs, bool *eos) const {
248    return mImpl->getCachedDuration(durationUs, eos);
249}
250
251}  // namespace android
252
253////////////////////////////////////////////////////////////////////////////////
254
255using namespace android;
256
257static sp<JMediaExtractor> setMediaExtractor(
258        JNIEnv *env, jobject thiz, const sp<JMediaExtractor> &extractor) {
259    sp<JMediaExtractor> old =
260        (JMediaExtractor *)env->GetLongField(thiz, gFields.context);
261
262    if (extractor != NULL) {
263        extractor->incStrong(thiz);
264    }
265    if (old != NULL) {
266        old->decStrong(thiz);
267    }
268    env->SetLongField(thiz, gFields.context, (jlong)extractor.get());
269
270    return old;
271}
272
273static sp<JMediaExtractor> getMediaExtractor(JNIEnv *env, jobject thiz) {
274    return (JMediaExtractor *)env->GetLongField(thiz, gFields.context);
275}
276
277static void android_media_MediaExtractor_release(JNIEnv *env, jobject thiz) {
278    setMediaExtractor(env, thiz, NULL);
279}
280
281static jint android_media_MediaExtractor_getTrackCount(
282        JNIEnv *env, jobject thiz) {
283    sp<JMediaExtractor> extractor = getMediaExtractor(env, thiz);
284
285    if (extractor == NULL) {
286        jniThrowException(env, "java/lang/IllegalStateException", NULL);
287        return -1;
288    }
289
290    return (jint) extractor->countTracks();
291}
292
293static jobject android_media_MediaExtractor_getTrackFormatNative(
294        JNIEnv *env, jobject thiz, jint index) {
295    sp<JMediaExtractor> extractor = getMediaExtractor(env, thiz);
296
297    if (extractor == NULL) {
298        jniThrowException(env, "java/lang/IllegalStateException", NULL);
299        return NULL;
300    }
301
302    jobject format;
303    status_t err = extractor->getTrackFormat(index, &format);
304
305    if (err != OK) {
306        jniThrowException(env, "java/lang/IllegalArgumentException", NULL);
307        return NULL;
308    }
309
310    return format;
311}
312
313static jobject android_media_MediaExtractor_getFileFormatNative(
314        JNIEnv *env, jobject thiz) {
315    sp<JMediaExtractor> extractor = getMediaExtractor(env, thiz);
316
317    if (extractor == NULL) {
318        jniThrowException(env, "java/lang/IllegalStateException", NULL);
319        return NULL;
320    }
321
322    jobject format;
323    status_t err = extractor->getFileFormat(&format);
324
325    if (err != OK) {
326        jniThrowException(env, "java/lang/IllegalArgumentException", NULL);
327        return NULL;
328    }
329
330    return format;
331}
332
333static void android_media_MediaExtractor_selectTrack(
334        JNIEnv *env, jobject thiz, jint index) {
335    sp<JMediaExtractor> extractor = getMediaExtractor(env, thiz);
336
337    if (extractor == NULL) {
338        jniThrowException(env, "java/lang/IllegalStateException", NULL);
339        return;
340    }
341
342    status_t err = extractor->selectTrack(index);
343
344    if (err != OK) {
345        jniThrowException(env, "java/lang/IllegalArgumentException", NULL);
346        return;
347    }
348}
349
350static void android_media_MediaExtractor_unselectTrack(
351        JNIEnv *env, jobject thiz, jint index) {
352    sp<JMediaExtractor> extractor = getMediaExtractor(env, thiz);
353
354    if (extractor == NULL) {
355        jniThrowException(env, "java/lang/IllegalStateException", NULL);
356        return;
357    }
358
359    status_t err = extractor->unselectTrack(index);
360
361    if (err != OK) {
362        jniThrowException(env, "java/lang/IllegalArgumentException", NULL);
363        return;
364    }
365}
366
367static void android_media_MediaExtractor_seekTo(
368        JNIEnv *env, jobject thiz, jlong timeUs, jint mode) {
369    sp<JMediaExtractor> extractor = getMediaExtractor(env, thiz);
370
371    if (extractor == NULL) {
372        jniThrowException(env, "java/lang/IllegalStateException", NULL);
373        return;
374    }
375
376    if (mode < MediaSource::ReadOptions::SEEK_PREVIOUS_SYNC
377            || mode >= MediaSource::ReadOptions::SEEK_CLOSEST) {
378        jniThrowException(env, "java/lang/IllegalArgumentException", NULL);
379        return;
380    }
381
382    extractor->seekTo(timeUs, (MediaSource::ReadOptions::SeekMode)mode);
383}
384
385static jboolean android_media_MediaExtractor_advance(
386        JNIEnv *env, jobject thiz) {
387    sp<JMediaExtractor> extractor = getMediaExtractor(env, thiz);
388
389    if (extractor == NULL) {
390        jniThrowException(env, "java/lang/IllegalStateException", NULL);
391        return JNI_FALSE;
392    }
393
394    status_t err = extractor->advance();
395
396    if (err == ERROR_END_OF_STREAM) {
397        return JNI_FALSE;
398    } else if (err != OK) {
399        jniThrowException(env, "java/lang/IllegalArgumentException", NULL);
400        return JNI_FALSE;
401    }
402
403    return JNI_TRUE;
404}
405
406static jint android_media_MediaExtractor_readSampleData(
407        JNIEnv *env, jobject thiz, jobject byteBuf, jint offset) {
408    sp<JMediaExtractor> extractor = getMediaExtractor(env, thiz);
409
410    if (extractor == NULL) {
411        jniThrowException(env, "java/lang/IllegalStateException", NULL);
412        return -1;
413    }
414
415    size_t sampleSize;
416    status_t err = extractor->readSampleData(byteBuf, offset, &sampleSize);
417
418    if (err == ERROR_END_OF_STREAM) {
419        return -1;
420    } else if (err != OK) {
421        jniThrowException(env, "java/lang/IllegalArgumentException", NULL);
422        return -1;
423    }
424
425    return (jint) sampleSize;
426}
427
428static jint android_media_MediaExtractor_getSampleTrackIndex(
429        JNIEnv *env, jobject thiz) {
430    sp<JMediaExtractor> extractor = getMediaExtractor(env, thiz);
431
432    if (extractor == NULL) {
433        jniThrowException(env, "java/lang/IllegalStateException", NULL);
434        return -1;
435    }
436
437    size_t trackIndex;
438    status_t err = extractor->getSampleTrackIndex(&trackIndex);
439
440    if (err == ERROR_END_OF_STREAM) {
441        return -1;
442    } else if (err != OK) {
443        jniThrowException(env, "java/lang/IllegalArgumentException", NULL);
444        return -1;
445    }
446
447    return (jint) trackIndex;
448}
449
450static jlong android_media_MediaExtractor_getSampleTime(
451        JNIEnv *env, jobject thiz) {
452    sp<JMediaExtractor> extractor = getMediaExtractor(env, thiz);
453
454    if (extractor == NULL) {
455        jniThrowException(env, "java/lang/IllegalStateException", NULL);
456        return -1ll;
457    }
458
459    int64_t sampleTimeUs;
460    status_t err = extractor->getSampleTime(&sampleTimeUs);
461
462    if (err == ERROR_END_OF_STREAM) {
463        return -1ll;
464    } else if (err != OK) {
465        jniThrowException(env, "java/lang/IllegalArgumentException", NULL);
466        return -1ll;
467    }
468
469    return (jlong) sampleTimeUs;
470}
471
472static jint android_media_MediaExtractor_getSampleFlags(
473        JNIEnv *env, jobject thiz) {
474    sp<JMediaExtractor> extractor = getMediaExtractor(env, thiz);
475
476    if (extractor == NULL) {
477        jniThrowException(env, "java/lang/IllegalStateException", NULL);
478        return -1;
479    }
480
481    uint32_t sampleFlags;
482    status_t err = extractor->getSampleFlags(&sampleFlags);
483
484    if (err == ERROR_END_OF_STREAM) {
485        return -1;
486    } else if (err != OK) {
487        jniThrowException(env, "java/lang/IllegalArgumentException", NULL);
488        return -1;
489    }
490
491    return (jint) sampleFlags;
492}
493
494static jboolean android_media_MediaExtractor_getSampleCryptoInfo(
495        JNIEnv *env, jobject thiz, jobject cryptoInfoObj) {
496    sp<JMediaExtractor> extractor = getMediaExtractor(env, thiz);
497
498    if (extractor == NULL) {
499        jniThrowException(env, "java/lang/IllegalStateException", NULL);
500        return JNI_FALSE;
501    }
502
503    sp<MetaData> meta;
504    status_t err = extractor->getSampleMeta(&meta);
505
506    if (err != OK) {
507        return JNI_FALSE;
508    }
509
510    uint32_t type;
511    const void *data;
512    size_t size;
513    if (!meta->findData(kKeyEncryptedSizes, &type, &data, &size)) {
514        return JNI_FALSE;
515    }
516
517    size_t numSubSamples = size / sizeof(int32_t);
518
519    if (numSubSamples == 0) {
520        return JNI_FALSE;
521    }
522
523    jintArray numBytesOfEncryptedDataObj = env->NewIntArray(numSubSamples);
524    jboolean isCopy;
525    jint *dst = env->GetIntArrayElements(numBytesOfEncryptedDataObj, &isCopy);
526    for (size_t i = 0; i < numSubSamples; ++i) {
527        dst[i] = ((const int32_t *)data)[i];
528    }
529    env->ReleaseIntArrayElements(numBytesOfEncryptedDataObj, dst, 0);
530    dst = NULL;
531
532    size_t encSize = size;
533    jintArray numBytesOfPlainDataObj = NULL;
534    if (meta->findData(kKeyPlainSizes, &type, &data, &size)) {
535        if (size != encSize) {
536            // The two must be of the same length.
537            return JNI_FALSE;
538        }
539
540        numBytesOfPlainDataObj = env->NewIntArray(numSubSamples);
541        jboolean isCopy;
542        jint *dst = env->GetIntArrayElements(numBytesOfPlainDataObj, &isCopy);
543        for (size_t i = 0; i < numSubSamples; ++i) {
544            dst[i] = ((const int32_t *)data)[i];
545        }
546        env->ReleaseIntArrayElements(numBytesOfPlainDataObj, dst, 0);
547        dst = NULL;
548    }
549
550    jbyteArray keyObj = NULL;
551    if (meta->findData(kKeyCryptoKey, &type, &data, &size)) {
552        if (size != 16) {
553            // Keys must be 16 bytes in length.
554            return JNI_FALSE;
555        }
556
557        keyObj = env->NewByteArray(size);
558        jboolean isCopy;
559        jbyte *dst = env->GetByteArrayElements(keyObj, &isCopy);
560        memcpy(dst, data, size);
561        env->ReleaseByteArrayElements(keyObj, dst, 0);
562        dst = NULL;
563    }
564
565    jbyteArray ivObj = NULL;
566    if (meta->findData(kKeyCryptoIV, &type, &data, &size)) {
567        if (size != 16) {
568            // IVs must be 16 bytes in length.
569            return JNI_FALSE;
570        }
571
572        ivObj = env->NewByteArray(size);
573        jboolean isCopy;
574        jbyte *dst = env->GetByteArrayElements(ivObj, &isCopy);
575        memcpy(dst, data, size);
576        env->ReleaseByteArrayElements(ivObj, dst, 0);
577        dst = NULL;
578    }
579
580    int32_t mode;
581    if (!meta->findInt32(kKeyCryptoMode, &mode)) {
582        mode = CryptoPlugin::kMode_AES_CTR;
583    }
584
585    env->CallVoidMethod(
586            cryptoInfoObj,
587            gFields.cryptoInfoSetID,
588            (jint)numSubSamples,
589            numBytesOfPlainDataObj,
590            numBytesOfEncryptedDataObj,
591            keyObj,
592            ivObj,
593            mode);
594
595    return JNI_TRUE;
596}
597
598static void android_media_MediaExtractor_native_init(JNIEnv *env) {
599    jclass clazz = env->FindClass("android/media/MediaExtractor");
600    CHECK(clazz != NULL);
601
602    gFields.context = env->GetFieldID(clazz, "mNativeContext", "J");
603    CHECK(gFields.context != NULL);
604
605    clazz = env->FindClass("android/media/MediaCodec$CryptoInfo");
606    CHECK(clazz != NULL);
607
608    gFields.cryptoInfoSetID =
609        env->GetMethodID(clazz, "set", "(I[I[I[B[BI)V");
610
611    DataSource::RegisterDefaultSniffers();
612}
613
614static void android_media_MediaExtractor_native_setup(
615        JNIEnv *env, jobject thiz) {
616    sp<JMediaExtractor> extractor = new JMediaExtractor(env, thiz);
617    setMediaExtractor(env,thiz, extractor);
618}
619
620static void android_media_MediaExtractor_setDataSource(
621        JNIEnv *env, jobject thiz,
622        jobject httpServiceBinderObj,
623        jstring pathObj,
624        jobjectArray keysArray,
625        jobjectArray valuesArray) {
626    sp<JMediaExtractor> extractor = getMediaExtractor(env, thiz);
627
628    if (extractor == NULL) {
629        jniThrowException(env, "java/lang/IllegalStateException", NULL);
630        return;
631    }
632
633    if (pathObj == NULL) {
634        jniThrowException(env, "java/lang/IllegalArgumentException", NULL);
635        return;
636    }
637
638    KeyedVector<String8, String8> headers;
639    if (!ConvertKeyValueArraysToKeyedVector(
640                env, keysArray, valuesArray, &headers)) {
641        return;
642    }
643
644    const char *path = env->GetStringUTFChars(pathObj, NULL);
645
646    if (path == NULL) {
647        return;
648    }
649
650    sp<IMediaHTTPService> httpService;
651    if (httpServiceBinderObj != NULL) {
652        sp<IBinder> binder = ibinderForJavaObject(env, httpServiceBinderObj);
653        httpService = interface_cast<IMediaHTTPService>(binder);
654    }
655
656    status_t err = extractor->setDataSource(httpService, path, &headers);
657
658    env->ReleaseStringUTFChars(pathObj, path);
659    path = NULL;
660
661    if (err != OK) {
662        jniThrowException(
663                env,
664                "java/io/IOException",
665                "Failed to instantiate extractor.");
666        return;
667    }
668}
669
670static void android_media_MediaExtractor_setDataSourceFd(
671        JNIEnv *env, jobject thiz,
672        jobject fileDescObj, jlong offset, jlong length) {
673    sp<JMediaExtractor> extractor = getMediaExtractor(env, thiz);
674
675    if (extractor == NULL) {
676        jniThrowException(env, "java/lang/IllegalStateException", NULL);
677        return;
678    }
679
680    if (fileDescObj == NULL) {
681        jniThrowException(env, "java/lang/IllegalArgumentException", NULL);
682        return;
683    }
684
685    int fd = jniGetFDFromFileDescriptor(env, fileDescObj);
686
687    status_t err = extractor->setDataSource(fd, offset, length);
688
689    if (err != OK) {
690        jniThrowException(
691                env,
692                "java/io/IOException",
693                "Failed to instantiate extractor.");
694        return;
695    }
696}
697
698static void android_media_MediaExtractor_setDataSourceCallback(
699        JNIEnv *env, jobject thiz,
700        jobject callbackObj) {
701    sp<JMediaExtractor> extractor = getMediaExtractor(env, thiz);
702
703    if (extractor == NULL) {
704        jniThrowException(env, "java/lang/IllegalStateException", NULL);
705        return;
706    }
707
708    if (callbackObj == NULL) {
709        jniThrowException(env, "java/lang/IllegalArgumentException", NULL);
710        return;
711    }
712
713    sp<DataSource> bridge =
714        DataSource::CreateFromIDataSource(new JMediaDataSource(env, callbackObj));
715    status_t err = extractor->setDataSource(bridge);
716
717    if (err != OK) {
718        jniThrowException(
719                env,
720                "java/io/IOException",
721                "Failed to instantiate extractor.");
722        return;
723    }
724}
725
726static jlong android_media_MediaExtractor_getCachedDurationUs(
727        JNIEnv *env, jobject thiz) {
728    sp<JMediaExtractor> extractor = getMediaExtractor(env, thiz);
729
730    if (extractor == NULL) {
731        jniThrowException(env, "java/lang/IllegalStateException", NULL);
732        return -1ll;
733    }
734
735    int64_t cachedDurationUs;
736    bool eos;
737    if (!extractor->getCachedDuration(&cachedDurationUs, &eos)) {
738        return -1ll;
739    }
740
741    return (jlong) cachedDurationUs;
742}
743
744static jboolean android_media_MediaExtractor_hasCacheReachedEOS(
745        JNIEnv *env, jobject thiz) {
746    sp<JMediaExtractor> extractor = getMediaExtractor(env, thiz);
747
748    if (extractor == NULL) {
749        jniThrowException(env, "java/lang/IllegalStateException", NULL);
750        return JNI_TRUE;
751    }
752
753    int64_t cachedDurationUs;
754    bool eos;
755    if (!extractor->getCachedDuration(&cachedDurationUs, &eos)) {
756        return JNI_TRUE;
757    }
758
759    return eos ? JNI_TRUE : JNI_FALSE;
760}
761
762static void android_media_MediaExtractor_native_finalize(
763        JNIEnv *env, jobject thiz) {
764    android_media_MediaExtractor_release(env, thiz);
765}
766
767static JNINativeMethod gMethods[] = {
768    { "release", "()V", (void *)android_media_MediaExtractor_release },
769
770    { "getTrackCount", "()I", (void *)android_media_MediaExtractor_getTrackCount },
771
772    { "getFileFormatNative", "()Ljava/util/Map;",
773        (void *)android_media_MediaExtractor_getFileFormatNative },
774
775    { "getTrackFormatNative", "(I)Ljava/util/Map;",
776        (void *)android_media_MediaExtractor_getTrackFormatNative },
777
778    { "selectTrack", "(I)V", (void *)android_media_MediaExtractor_selectTrack },
779
780    { "unselectTrack", "(I)V",
781        (void *)android_media_MediaExtractor_unselectTrack },
782
783    { "seekTo", "(JI)V", (void *)android_media_MediaExtractor_seekTo },
784
785    { "advance", "()Z", (void *)android_media_MediaExtractor_advance },
786
787    { "readSampleData", "(Ljava/nio/ByteBuffer;I)I",
788        (void *)android_media_MediaExtractor_readSampleData },
789
790    { "getSampleTrackIndex", "()I",
791        (void *)android_media_MediaExtractor_getSampleTrackIndex },
792
793    { "getSampleTime", "()J",
794        (void *)android_media_MediaExtractor_getSampleTime },
795
796    { "getSampleFlags", "()I",
797        (void *)android_media_MediaExtractor_getSampleFlags },
798
799    { "getSampleCryptoInfo", "(Landroid/media/MediaCodec$CryptoInfo;)Z",
800        (void *)android_media_MediaExtractor_getSampleCryptoInfo },
801
802    { "native_init", "()V", (void *)android_media_MediaExtractor_native_init },
803
804    { "native_setup", "()V",
805      (void *)android_media_MediaExtractor_native_setup },
806
807    { "native_finalize", "()V",
808      (void *)android_media_MediaExtractor_native_finalize },
809
810    { "nativeSetDataSource",
811        "(Landroid/os/IBinder;Ljava/lang/String;[Ljava/lang/String;"
812        "[Ljava/lang/String;)V",
813      (void *)android_media_MediaExtractor_setDataSource },
814
815    { "setDataSource", "(Ljava/io/FileDescriptor;JJ)V",
816      (void *)android_media_MediaExtractor_setDataSourceFd },
817
818    { "setDataSource", "(Landroid/media/MediaDataSource;)V",
819      (void *)android_media_MediaExtractor_setDataSourceCallback },
820
821    { "getCachedDuration", "()J",
822      (void *)android_media_MediaExtractor_getCachedDurationUs },
823
824    { "hasCacheReachedEndOfStream", "()Z",
825      (void *)android_media_MediaExtractor_hasCacheReachedEOS },
826};
827
828int register_android_media_MediaExtractor(JNIEnv *env) {
829    return AndroidRuntime::registerNativeMethods(env,
830                "android/media/MediaExtractor", gMethods, NELEM(gMethods));
831}
832