android_media_MediaCodec.cpp revision 9560ddb48af0e2da7743452f8d9d6d9cd34d8438 
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 "MediaCodec-JNI"
19#include <utils/Log.h>
20
21#include "android_media_MediaCodec.h"
22
23#include "android_media_MediaCrypto.h"
24#include "android_media_Utils.h"
25#include "android_runtime/AndroidRuntime.h"
26#include "android_runtime/android_view_Surface.h"
27#include "jni.h"
28#include "JNIHelp.h"
29
30#include <cutils/compiler.h>
31
32#include <gui/Surface.h>
33
34#include <media/ICrypto.h>
35#include <media/stagefright/MediaCodec.h>
36#include <media/stagefright/foundation/ABuffer.h>
37#include <media/stagefright/foundation/ADebug.h>
38#include <media/stagefright/foundation/ALooper.h>
39#include <media/stagefright/foundation/AMessage.h>
40#include <media/stagefright/foundation/AString.h>
41#include <media/stagefright/MediaErrors.h>
42#include <media/stagefright/PersistentSurface.h>
43#include <nativehelper/ScopedLocalRef.h>
44
45#include <system/window.h>
46
47namespace android {
48
49// Keep these in sync with their equivalents in MediaCodec.java !!!
50enum {
51    DEQUEUE_INFO_TRY_AGAIN_LATER            = -1,
52    DEQUEUE_INFO_OUTPUT_FORMAT_CHANGED      = -2,
53    DEQUEUE_INFO_OUTPUT_BUFFERS_CHANGED     = -3,
54};
55
56enum {
57    EVENT_CALLBACK = 1,
58    EVENT_SET_CALLBACK = 2,
59};
60
61static struct CryptoErrorCodes {
62    jint cryptoErrorNoKey;
63    jint cryptoErrorKeyExpired;
64    jint cryptoErrorResourceBusy;
65    jint cryptoErrorInsufficientOutputProtection;
66} gCryptoErrorCodes;
67
68static struct CodecActionCodes {
69    jint codecActionTransient;
70    jint codecActionRecoverable;
71} gCodecActionCodes;
72
73static struct ExceptionReason {
74    jint reasonHardware;
75    jint reasonReclaimed;
76} gExceptionReason;
77
78static struct {
79    jclass clazz;
80    jfieldID mLock;
81    jfieldID mPersistentObject;
82    jmethodID ctor;
83    jmethodID setNativeObjectLocked;
84} gPersistentSurfaceClassInfo;
85
86struct fields_t {
87    jfieldID context;
88    jmethodID postEventFromNativeID;
89    jfieldID cryptoInfoNumSubSamplesID;
90    jfieldID cryptoInfoNumBytesOfClearDataID;
91    jfieldID cryptoInfoNumBytesOfEncryptedDataID;
92    jfieldID cryptoInfoKeyID;
93    jfieldID cryptoInfoIVID;
94    jfieldID cryptoInfoModeID;
95};
96
97static fields_t gFields;
98static const void *sRefBaseOwner;
99
100////////////////////////////////////////////////////////////////////////////////
101
102JMediaCodec::JMediaCodec(
103        JNIEnv *env, jobject thiz,
104        const char *name, bool nameIsType, bool encoder)
105    : mClass(NULL),
106      mObject(NULL) {
107    jclass clazz = env->GetObjectClass(thiz);
108    CHECK(clazz != NULL);
109
110    mClass = (jclass)env->NewGlobalRef(clazz);
111    mObject = env->NewWeakGlobalRef(thiz);
112
113    cacheJavaObjects(env);
114
115    mLooper = new ALooper;
116    mLooper->setName("MediaCodec_looper");
117
118    mLooper->start(
119            false,      // runOnCallingThread
120            true,       // canCallJava
121            PRIORITY_FOREGROUND);
122
123    if (nameIsType) {
124        mCodec = MediaCodec::CreateByType(mLooper, name, encoder, &mInitStatus);
125    } else {
126        mCodec = MediaCodec::CreateByComponentName(mLooper, name, &mInitStatus);
127    }
128    CHECK((mCodec != NULL) != (mInitStatus != OK));
129}
130
131void JMediaCodec::cacheJavaObjects(JNIEnv *env) {
132    jclass clazz = (jclass)env->FindClass("java/nio/ByteBuffer");
133    mByteBufferClass = (jclass)env->NewGlobalRef(clazz);
134    CHECK(mByteBufferClass != NULL);
135
136    ScopedLocalRef<jclass> byteOrderClass(
137            env, env->FindClass("java/nio/ByteOrder"));
138    CHECK(byteOrderClass.get() != NULL);
139
140    jmethodID nativeOrderID = env->GetStaticMethodID(
141            byteOrderClass.get(), "nativeOrder", "()Ljava/nio/ByteOrder;");
142    CHECK(nativeOrderID != NULL);
143
144    jobject nativeByteOrderObj =
145        env->CallStaticObjectMethod(byteOrderClass.get(), nativeOrderID);
146    mNativeByteOrderObj = env->NewGlobalRef(nativeByteOrderObj);
147    CHECK(mNativeByteOrderObj != NULL);
148    env->DeleteLocalRef(nativeByteOrderObj);
149    nativeByteOrderObj = NULL;
150
151    mByteBufferOrderMethodID = env->GetMethodID(
152            mByteBufferClass,
153            "order",
154            "(Ljava/nio/ByteOrder;)Ljava/nio/ByteBuffer;");
155    CHECK(mByteBufferOrderMethodID != NULL);
156
157    mByteBufferAsReadOnlyBufferMethodID = env->GetMethodID(
158            mByteBufferClass, "asReadOnlyBuffer", "()Ljava/nio/ByteBuffer;");
159    CHECK(mByteBufferAsReadOnlyBufferMethodID != NULL);
160
161    mByteBufferPositionMethodID = env->GetMethodID(
162            mByteBufferClass, "position", "(I)Ljava/nio/Buffer;");
163    CHECK(mByteBufferPositionMethodID != NULL);
164
165    mByteBufferLimitMethodID = env->GetMethodID(
166            mByteBufferClass, "limit", "(I)Ljava/nio/Buffer;");
167    CHECK(mByteBufferLimitMethodID != NULL);
168}
169
170status_t JMediaCodec::initCheck() const {
171    return mInitStatus;
172}
173
174void JMediaCodec::registerSelf() {
175    mLooper->registerHandler(this);
176}
177
178void JMediaCodec::release() {
179    if (mCodec != NULL) {
180        mCodec->release();
181        mCodec.clear();
182        mInitStatus = NO_INIT;
183    }
184
185    if (mLooper != NULL) {
186        mLooper->unregisterHandler(id());
187        mLooper->stop();
188        mLooper.clear();
189    }
190}
191
192JMediaCodec::~JMediaCodec() {
193    if (mCodec != NULL || mLooper != NULL) {
194        /* MediaCodec and looper should have been released explicitly already
195         * in setMediaCodec() (see comments in setMediaCodec()).
196         *
197         * Otherwise JMediaCodec::~JMediaCodec() might be called from within the
198         * message handler, doing release() there risks deadlock as MediaCodec::
199         * release() post synchronous message to the same looper.
200         *
201         * Print a warning and try to proceed with releasing.
202         */
203        ALOGW("try to release MediaCodec from JMediaCodec::~JMediaCodec()...");
204        release();
205        ALOGW("done releasing MediaCodec from JMediaCodec::~JMediaCodec().");
206    }
207
208    JNIEnv *env = AndroidRuntime::getJNIEnv();
209
210    env->DeleteWeakGlobalRef(mObject);
211    mObject = NULL;
212    env->DeleteGlobalRef(mClass);
213    mClass = NULL;
214    deleteJavaObjects(env);
215}
216
217void JMediaCodec::deleteJavaObjects(JNIEnv *env) {
218    env->DeleteGlobalRef(mByteBufferClass);
219    mByteBufferClass = NULL;
220    env->DeleteGlobalRef(mNativeByteOrderObj);
221    mNativeByteOrderObj = NULL;
222
223    mByteBufferOrderMethodID = NULL;
224    mByteBufferAsReadOnlyBufferMethodID = NULL;
225    mByteBufferPositionMethodID = NULL;
226    mByteBufferLimitMethodID = NULL;
227}
228
229status_t JMediaCodec::setCallback(jobject cb) {
230    if (cb != NULL) {
231        if (mCallbackNotification == NULL) {
232            mCallbackNotification = new AMessage(kWhatCallbackNotify, this);
233        }
234    } else {
235        mCallbackNotification.clear();
236    }
237
238    return mCodec->setCallback(mCallbackNotification);
239}
240
241status_t JMediaCodec::configure(
242        const sp<AMessage> &format,
243        const sp<IGraphicBufferProducer> &bufferProducer,
244        const sp<ICrypto> &crypto,
245        int flags) {
246    sp<Surface> client;
247    if (bufferProducer != NULL) {
248        mSurfaceTextureClient =
249            new Surface(bufferProducer, true /* controlledByApp */);
250    } else {
251        mSurfaceTextureClient.clear();
252    }
253
254    return mCodec->configure(format, mSurfaceTextureClient, crypto, flags);
255}
256
257status_t JMediaCodec::setSurface(
258        const sp<IGraphicBufferProducer> &bufferProducer) {
259    sp<Surface> client;
260    if (bufferProducer != NULL) {
261        client = new Surface(bufferProducer, true /* controlledByApp */);
262    }
263    status_t err = mCodec->setSurface(client);
264    if (err == OK) {
265        mSurfaceTextureClient = client;
266    }
267    return err;
268}
269
270status_t JMediaCodec::createInputSurface(
271        sp<IGraphicBufferProducer>* bufferProducer) {
272    return mCodec->createInputSurface(bufferProducer);
273}
274
275status_t JMediaCodec::setInputSurface(
276        const sp<PersistentSurface> &surface) {
277    return mCodec->setInputSurface(surface);
278}
279
280status_t JMediaCodec::start() {
281    return mCodec->start();
282}
283
284status_t JMediaCodec::stop() {
285    mSurfaceTextureClient.clear();
286
287    return mCodec->stop();
288}
289
290status_t JMediaCodec::flush() {
291    return mCodec->flush();
292}
293
294status_t JMediaCodec::reset() {
295    return mCodec->reset();
296}
297
298status_t JMediaCodec::queueInputBuffer(
299        size_t index,
300        size_t offset, size_t size, int64_t timeUs, uint32_t flags,
301        AString *errorDetailMsg) {
302    return mCodec->queueInputBuffer(
303            index, offset, size, timeUs, flags, errorDetailMsg);
304}
305
306status_t JMediaCodec::queueSecureInputBuffer(
307        size_t index,
308        size_t offset,
309        const CryptoPlugin::SubSample *subSamples,
310        size_t numSubSamples,
311        const uint8_t key[16],
312        const uint8_t iv[16],
313        CryptoPlugin::Mode mode,
314        int64_t presentationTimeUs,
315        uint32_t flags,
316        AString *errorDetailMsg) {
317    return mCodec->queueSecureInputBuffer(
318            index, offset, subSamples, numSubSamples, key, iv, mode,
319            presentationTimeUs, flags, errorDetailMsg);
320}
321
322status_t JMediaCodec::dequeueInputBuffer(size_t *index, int64_t timeoutUs) {
323    return mCodec->dequeueInputBuffer(index, timeoutUs);
324}
325
326status_t JMediaCodec::dequeueOutputBuffer(
327        JNIEnv *env, jobject bufferInfo, size_t *index, int64_t timeoutUs) {
328    size_t size, offset;
329    int64_t timeUs;
330    uint32_t flags;
331    status_t err = mCodec->dequeueOutputBuffer(
332            index, &offset, &size, &timeUs, &flags, timeoutUs);
333
334    if (err != OK) {
335        return err;
336    }
337
338    ScopedLocalRef<jclass> clazz(
339            env, env->FindClass("android/media/MediaCodec$BufferInfo"));
340
341    jmethodID method = env->GetMethodID(clazz.get(), "set", "(IIJI)V");
342    env->CallVoidMethod(bufferInfo, method, (jint)offset, (jint)size, timeUs, flags);
343
344    return OK;
345}
346
347status_t JMediaCodec::releaseOutputBuffer(
348        size_t index, bool render, bool updatePTS, int64_t timestampNs) {
349    if (updatePTS) {
350        return mCodec->renderOutputBufferAndRelease(index, timestampNs);
351    }
352    return render
353        ? mCodec->renderOutputBufferAndRelease(index)
354        : mCodec->releaseOutputBuffer(index);
355}
356
357status_t JMediaCodec::signalEndOfInputStream() {
358    return mCodec->signalEndOfInputStream();
359}
360
361status_t JMediaCodec::getFormat(JNIEnv *env, bool input, jobject *format) const {
362    sp<AMessage> msg;
363    status_t err;
364    err = input ? mCodec->getInputFormat(&msg) : mCodec->getOutputFormat(&msg);
365    if (err != OK) {
366        return err;
367    }
368
369    return ConvertMessageToMap(env, msg, format);
370}
371
372status_t JMediaCodec::getOutputFormat(JNIEnv *env, size_t index, jobject *format) const {
373    sp<AMessage> msg;
374    status_t err;
375    if ((err = mCodec->getOutputFormat(index, &msg)) != OK) {
376        return err;
377    }
378
379    return ConvertMessageToMap(env, msg, format);
380}
381
382status_t JMediaCodec::getBuffers(
383        JNIEnv *env, bool input, jobjectArray *bufArray) const {
384    Vector<sp<ABuffer> > buffers;
385
386    status_t err =
387        input
388            ? mCodec->getInputBuffers(&buffers)
389            : mCodec->getOutputBuffers(&buffers);
390
391    if (err != OK) {
392        return err;
393    }
394
395    *bufArray = (jobjectArray)env->NewObjectArray(
396            buffers.size(), mByteBufferClass, NULL);
397    if (*bufArray == NULL) {
398        return NO_MEMORY;
399    }
400
401    for (size_t i = 0; i < buffers.size(); ++i) {
402        const sp<ABuffer> &buffer = buffers.itemAt(i);
403
404        jobject byteBuffer = NULL;
405        err = createByteBufferFromABuffer(
406                env, !input /* readOnly */, true /* clearBuffer */, buffer, &byteBuffer);
407        if (err != OK) {
408            return err;
409        }
410        if (byteBuffer != NULL) {
411            env->SetObjectArrayElement(
412                    *bufArray, i, byteBuffer);
413
414            env->DeleteLocalRef(byteBuffer);
415            byteBuffer = NULL;
416        }
417    }
418
419    return OK;
420}
421
422// static
423status_t JMediaCodec::createByteBufferFromABuffer(
424        JNIEnv *env, bool readOnly, bool clearBuffer, const sp<ABuffer> &buffer,
425        jobject *buf) const {
426    // if this is an ABuffer that doesn't actually hold any accessible memory,
427    // use a null ByteBuffer
428    *buf = NULL;
429    if (buffer->base() == NULL) {
430        return OK;
431    }
432
433    jobject byteBuffer =
434        env->NewDirectByteBuffer(buffer->base(), buffer->capacity());
435    if (readOnly && byteBuffer != NULL) {
436        jobject readOnlyBuffer = env->CallObjectMethod(
437                byteBuffer, mByteBufferAsReadOnlyBufferMethodID);
438        env->DeleteLocalRef(byteBuffer);
439        byteBuffer = readOnlyBuffer;
440    }
441    if (byteBuffer == NULL) {
442        return NO_MEMORY;
443    }
444    jobject me = env->CallObjectMethod(
445            byteBuffer, mByteBufferOrderMethodID, mNativeByteOrderObj);
446    env->DeleteLocalRef(me);
447    me = env->CallObjectMethod(
448            byteBuffer, mByteBufferLimitMethodID,
449            clearBuffer ? buffer->capacity() : (buffer->offset() + buffer->size()));
450    env->DeleteLocalRef(me);
451    me = env->CallObjectMethod(
452            byteBuffer, mByteBufferPositionMethodID,
453            clearBuffer ? 0 : buffer->offset());
454    env->DeleteLocalRef(me);
455    me = NULL;
456
457    *buf = byteBuffer;
458    return OK;
459}
460
461status_t JMediaCodec::getBuffer(
462        JNIEnv *env, bool input, size_t index, jobject *buf) const {
463    sp<ABuffer> buffer;
464
465    status_t err =
466        input
467            ? mCodec->getInputBuffer(index, &buffer)
468            : mCodec->getOutputBuffer(index, &buffer);
469
470    if (err != OK) {
471        return err;
472    }
473
474    return createByteBufferFromABuffer(
475            env, !input /* readOnly */, input /* clearBuffer */, buffer, buf);
476}
477
478status_t JMediaCodec::getImage(
479        JNIEnv *env, bool input, size_t index, jobject *buf) const {
480    sp<ABuffer> buffer;
481
482    status_t err =
483        input
484            ? mCodec->getInputBuffer(index, &buffer)
485            : mCodec->getOutputBuffer(index, &buffer);
486
487    if (err != OK) {
488        return err;
489    }
490
491    // if this is an ABuffer that doesn't actually hold any accessible memory,
492    // use a null ByteBuffer
493    *buf = NULL;
494    if (buffer->base() == NULL) {
495        return OK;
496    }
497
498    // check if buffer is an image
499    sp<ABuffer> imageData;
500    if (!buffer->meta()->findBuffer("image-data", &imageData)) {
501        return OK;
502    }
503
504    int64_t timestamp = 0;
505    if (!input && buffer->meta()->findInt64("timeUs", &timestamp)) {
506        timestamp *= 1000; // adjust to ns
507    }
508
509    jobject byteBuffer = NULL;
510    err = createByteBufferFromABuffer(
511            env, !input /* readOnly */, input /* clearBuffer */, buffer, &byteBuffer);
512    if (err != OK) {
513        return OK;
514    }
515
516    jobject infoBuffer = NULL;
517    err = createByteBufferFromABuffer(
518            env, true /* readOnly */, true /* clearBuffer */, imageData, &infoBuffer);
519    if (err != OK) {
520        env->DeleteLocalRef(byteBuffer);
521        byteBuffer = NULL;
522        return OK;
523    }
524
525    jobject cropRect = NULL;
526    int32_t left, top, right, bottom;
527    if (buffer->meta()->findRect("crop-rect", &left, &top, &right, &bottom)) {
528        ScopedLocalRef<jclass> rectClazz(
529                env, env->FindClass("android/graphics/Rect"));
530        CHECK(rectClazz.get() != NULL);
531
532        jmethodID rectConstructID = env->GetMethodID(
533                rectClazz.get(), "<init>", "(IIII)V");
534
535        cropRect = env->NewObject(
536                rectClazz.get(), rectConstructID, left, top, right + 1, bottom + 1);
537    }
538
539    ScopedLocalRef<jclass> imageClazz(
540            env, env->FindClass("android/media/MediaCodec$MediaImage"));
541    CHECK(imageClazz.get() != NULL);
542
543    jmethodID imageConstructID = env->GetMethodID(imageClazz.get(), "<init>",
544            "(Ljava/nio/ByteBuffer;Ljava/nio/ByteBuffer;ZJIILandroid/graphics/Rect;)V");
545
546    *buf = env->NewObject(imageClazz.get(), imageConstructID,
547            byteBuffer, infoBuffer,
548            (jboolean)!input /* readOnly */,
549            (jlong)timestamp,
550            (jint)0 /* xOffset */, (jint)0 /* yOffset */, cropRect);
551
552    // if MediaImage creation fails, return null
553    if (env->ExceptionCheck()) {
554        env->ExceptionDescribe();
555        env->ExceptionClear();
556        *buf = NULL;
557    }
558
559    if (cropRect != NULL) {
560        env->DeleteLocalRef(cropRect);
561        cropRect = NULL;
562    }
563
564    env->DeleteLocalRef(byteBuffer);
565    byteBuffer = NULL;
566
567    env->DeleteLocalRef(infoBuffer);
568    infoBuffer = NULL;
569
570    return OK;
571}
572
573status_t JMediaCodec::getName(JNIEnv *env, jstring *nameStr) const {
574    AString name;
575
576    status_t err = mCodec->getName(&name);
577
578    if (err != OK) {
579        return err;
580    }
581
582    *nameStr = env->NewStringUTF(name.c_str());
583
584    return OK;
585}
586
587status_t JMediaCodec::setParameters(const sp<AMessage> &msg) {
588    return mCodec->setParameters(msg);
589}
590
591void JMediaCodec::setVideoScalingMode(int mode) {
592    if (mSurfaceTextureClient != NULL) {
593        native_window_set_scaling_mode(mSurfaceTextureClient.get(), mode);
594    }
595}
596
597static jthrowable createCodecException(
598        JNIEnv *env, status_t err, int32_t actionCode, const char *msg = NULL) {
599    ScopedLocalRef<jclass> clazz(
600            env, env->FindClass("android/media/MediaCodec$CodecException"));
601    CHECK(clazz.get() != NULL);
602
603    const jmethodID ctor = env->GetMethodID(clazz.get(), "<init>", "(IILjava/lang/String;I)V");
604    CHECK(ctor != NULL);
605
606    ScopedLocalRef<jstring> msgObj(
607            env, env->NewStringUTF(msg != NULL ? msg : String8::format("Error %#x", err)));
608
609    // translate action code to Java equivalent
610    switch (actionCode) {
611    case ACTION_CODE_TRANSIENT:
612        actionCode = gCodecActionCodes.codecActionTransient;
613        break;
614    case ACTION_CODE_RECOVERABLE:
615        actionCode = gCodecActionCodes.codecActionRecoverable;
616        break;
617    default:
618        actionCode = 0;  // everything else is fatal
619        break;
620    }
621
622    int reason =
623        (err == DEAD_OBJECT) ? gExceptionReason.reasonReclaimed : gExceptionReason.reasonHardware;
624    return (jthrowable)env->NewObject(clazz.get(), ctor, err, actionCode, msgObj.get(), reason);
625}
626
627void JMediaCodec::handleCallback(const sp<AMessage> &msg) {
628    int32_t arg1, arg2 = 0;
629    jobject obj = NULL;
630    CHECK(msg->findInt32("callbackID", &arg1));
631    JNIEnv *env = AndroidRuntime::getJNIEnv();
632
633    switch (arg1) {
634        case MediaCodec::CB_INPUT_AVAILABLE:
635        {
636            CHECK(msg->findInt32("index", &arg2));
637            break;
638        }
639
640        case MediaCodec::CB_OUTPUT_AVAILABLE:
641        {
642            CHECK(msg->findInt32("index", &arg2));
643
644            size_t size, offset;
645            int64_t timeUs;
646            uint32_t flags;
647            CHECK(msg->findSize("size", &size));
648            CHECK(msg->findSize("offset", &offset));
649            CHECK(msg->findInt64("timeUs", &timeUs));
650            CHECK(msg->findInt32("flags", (int32_t *)&flags));
651
652            ScopedLocalRef<jclass> clazz(
653                    env, env->FindClass("android/media/MediaCodec$BufferInfo"));
654            jmethodID ctor = env->GetMethodID(clazz.get(), "<init>", "()V");
655            jmethodID method = env->GetMethodID(clazz.get(), "set", "(IIJI)V");
656
657            obj = env->NewObject(clazz.get(), ctor);
658
659            if (obj == NULL) {
660                if (env->ExceptionCheck()) {
661                    ALOGE("Could not create MediaCodec.BufferInfo.");
662                    env->ExceptionClear();
663                }
664                jniThrowException(env, "java/lang/IllegalStateException", NULL);
665                return;
666            }
667
668            env->CallVoidMethod(obj, method, (jint)offset, (jint)size, timeUs, flags);
669            break;
670        }
671
672        case MediaCodec::CB_ERROR:
673        {
674            int32_t err, actionCode;
675            CHECK(msg->findInt32("err", &err));
676            CHECK(msg->findInt32("actionCode", &actionCode));
677
678            // note that DRM errors could conceivably alias into a CodecException
679            obj = (jobject)createCodecException(env, err, actionCode);
680
681            if (obj == NULL) {
682                if (env->ExceptionCheck()) {
683                    ALOGE("Could not create CodecException object.");
684                    env->ExceptionClear();
685                }
686                jniThrowException(env, "java/lang/IllegalStateException", NULL);
687                return;
688            }
689
690            break;
691        }
692
693        case MediaCodec::CB_OUTPUT_FORMAT_CHANGED:
694        {
695            sp<AMessage> format;
696            CHECK(msg->findMessage("format", &format));
697
698            if (OK != ConvertMessageToMap(env, format, &obj)) {
699                jniThrowException(env, "java/lang/IllegalStateException", NULL);
700                return;
701            }
702
703            break;
704        }
705
706        default:
707            TRESPASS();
708    }
709
710    env->CallVoidMethod(
711            mObject,
712            gFields.postEventFromNativeID,
713            EVENT_CALLBACK,
714            arg1,
715            arg2,
716            obj);
717
718    env->DeleteLocalRef(obj);
719}
720
721void JMediaCodec::onMessageReceived(const sp<AMessage> &msg) {
722    switch (msg->what()) {
723        case kWhatCallbackNotify:
724        {
725            handleCallback(msg);
726            break;
727        }
728        default:
729            TRESPASS();
730    }
731}
732
733}  // namespace android
734
735////////////////////////////////////////////////////////////////////////////////
736
737using namespace android;
738
739static sp<JMediaCodec> setMediaCodec(
740        JNIEnv *env, jobject thiz, const sp<JMediaCodec> &codec) {
741    sp<JMediaCodec> old = (JMediaCodec *)env->GetLongField(thiz, gFields.context);
742    if (codec != NULL) {
743        codec->incStrong(thiz);
744    }
745    if (old != NULL) {
746        /* release MediaCodec and stop the looper now before decStrong.
747         * otherwise JMediaCodec::~JMediaCodec() could be called from within
748         * its message handler, doing release() from there will deadlock
749         * (as MediaCodec::release() post synchronous message to the same looper)
750         */
751        old->release();
752        old->decStrong(thiz);
753    }
754    env->SetLongField(thiz, gFields.context, (jlong)codec.get());
755
756    return old;
757}
758
759static sp<JMediaCodec> getMediaCodec(JNIEnv *env, jobject thiz) {
760    return (JMediaCodec *)env->GetLongField(thiz, gFields.context);
761}
762
763static void android_media_MediaCodec_release(JNIEnv *env, jobject thiz) {
764    setMediaCodec(env, thiz, NULL);
765}
766
767static void throwCodecException(JNIEnv *env, status_t err, int32_t actionCode, const char *msg) {
768    jthrowable exception = createCodecException(env, err, actionCode, msg);
769    env->Throw(exception);
770}
771
772static void throwCryptoException(JNIEnv *env, status_t err, const char *msg) {
773    ScopedLocalRef<jclass> clazz(
774            env, env->FindClass("android/media/MediaCodec$CryptoException"));
775    CHECK(clazz.get() != NULL);
776
777    jmethodID constructID =
778        env->GetMethodID(clazz.get(), "<init>", "(ILjava/lang/String;)V");
779    CHECK(constructID != NULL);
780
781    jstring msgObj = env->NewStringUTF(msg != NULL ? msg : "Unknown Error");
782
783    /* translate OS errors to Java API CryptoException errorCodes (which are positive) */
784    switch (err) {
785        case ERROR_DRM_NO_LICENSE:
786            err = gCryptoErrorCodes.cryptoErrorNoKey;
787            break;
788        case ERROR_DRM_LICENSE_EXPIRED:
789            err = gCryptoErrorCodes.cryptoErrorKeyExpired;
790            break;
791        case ERROR_DRM_RESOURCE_BUSY:
792            err = gCryptoErrorCodes.cryptoErrorResourceBusy;
793            break;
794        case ERROR_DRM_INSUFFICIENT_OUTPUT_PROTECTION:
795            err = gCryptoErrorCodes.cryptoErrorInsufficientOutputProtection;
796            break;
797        default:  /* Other negative DRM error codes go out as is. */
798            break;
799    }
800
801    jthrowable exception =
802        (jthrowable)env->NewObject(clazz.get(), constructID, err, msgObj);
803
804    env->Throw(exception);
805}
806
807static jint throwExceptionAsNecessary(
808        JNIEnv *env, status_t err, int32_t actionCode = ACTION_CODE_FATAL,
809        const char *msg = NULL) {
810    switch (err) {
811        case OK:
812            return 0;
813
814        case -EAGAIN:
815            return DEQUEUE_INFO_TRY_AGAIN_LATER;
816
817        case INFO_FORMAT_CHANGED:
818            return DEQUEUE_INFO_OUTPUT_FORMAT_CHANGED;
819
820        case INFO_OUTPUT_BUFFERS_CHANGED:
821            return DEQUEUE_INFO_OUTPUT_BUFFERS_CHANGED;
822
823        case INVALID_OPERATION:
824            jniThrowException(env, "java/lang/IllegalStateException", msg);
825            return 0;
826
827        case BAD_VALUE:
828            jniThrowException(env, "java/lang/IllegalArgumentException", msg);
829            return 0;
830
831        default:
832            if (isCryptoError(err)) {
833                throwCryptoException(env, err, msg);
834                return 0;
835            }
836            throwCodecException(env, err, actionCode, msg);
837            return 0;
838    }
839}
840
841static void android_media_MediaCodec_native_setCallback(
842        JNIEnv *env,
843        jobject thiz,
844        jobject cb) {
845    sp<JMediaCodec> codec = getMediaCodec(env, thiz);
846
847    if (codec == NULL) {
848        throwExceptionAsNecessary(env, INVALID_OPERATION);
849        return;
850    }
851
852    status_t err = codec->setCallback(cb);
853
854    throwExceptionAsNecessary(env, err);
855}
856
857static void android_media_MediaCodec_native_configure(
858        JNIEnv *env,
859        jobject thiz,
860        jobjectArray keys, jobjectArray values,
861        jobject jsurface,
862        jobject jcrypto,
863        jint flags) {
864    sp<JMediaCodec> codec = getMediaCodec(env, thiz);
865
866    if (codec == NULL) {
867        throwExceptionAsNecessary(env, INVALID_OPERATION);
868        return;
869    }
870
871    sp<AMessage> format;
872    status_t err = ConvertKeyValueArraysToMessage(env, keys, values, &format);
873
874    if (err != OK) {
875        jniThrowException(env, "java/lang/IllegalArgumentException", NULL);
876        return;
877    }
878
879    sp<IGraphicBufferProducer> bufferProducer;
880    if (jsurface != NULL) {
881        sp<Surface> surface(android_view_Surface_getSurface(env, jsurface));
882        if (surface != NULL) {
883            bufferProducer = surface->getIGraphicBufferProducer();
884        } else {
885            jniThrowException(
886                    env,
887                    "java/lang/IllegalArgumentException",
888                    "The surface has been released");
889            return;
890        }
891    }
892
893    sp<ICrypto> crypto;
894    if (jcrypto != NULL) {
895        crypto = JCrypto::GetCrypto(env, jcrypto);
896    }
897
898    err = codec->configure(format, bufferProducer, crypto, flags);
899
900    throwExceptionAsNecessary(env, err);
901}
902
903static void android_media_MediaCodec_native_setSurface(
904        JNIEnv *env,
905        jobject thiz,
906        jobject jsurface) {
907    sp<JMediaCodec> codec = getMediaCodec(env, thiz);
908
909    if (codec == NULL) {
910        throwExceptionAsNecessary(env, INVALID_OPERATION);
911        return;
912    }
913
914    sp<IGraphicBufferProducer> bufferProducer;
915    if (jsurface != NULL) {
916        sp<Surface> surface(android_view_Surface_getSurface(env, jsurface));
917        if (surface != NULL) {
918            bufferProducer = surface->getIGraphicBufferProducer();
919        } else {
920            jniThrowException(
921                    env,
922                    "java/lang/IllegalArgumentException",
923                    "The surface has been released");
924            return;
925        }
926    }
927
928    status_t err = codec->setSurface(bufferProducer);
929    throwExceptionAsNecessary(env, err);
930}
931
932sp<PersistentSurface> android_media_MediaCodec_getPersistentInputSurface(
933        JNIEnv* env, jobject object) {
934    sp<PersistentSurface> persistentSurface;
935
936    jobject lock = env->GetObjectField(
937            object, gPersistentSurfaceClassInfo.mLock);
938    if (env->MonitorEnter(lock) == JNI_OK) {
939        persistentSurface = reinterpret_cast<PersistentSurface *>(
940                env->GetLongField(object,
941                        gPersistentSurfaceClassInfo.mPersistentObject));
942        env->MonitorExit(lock);
943    }
944    env->DeleteLocalRef(lock);
945
946    return persistentSurface;
947}
948
949static jobject android_media_MediaCodec_createPersistentInputSurface(
950        JNIEnv* env, jclass /* clazz */) {
951    ALOGV("android_media_MediaCodec_createPersistentInputSurface");
952    sp<PersistentSurface> persistentSurface =
953        MediaCodec::CreatePersistentInputSurface();
954
955    if (persistentSurface == NULL) {
956        return NULL;
957    }
958
959    sp<Surface> surface = new Surface(
960            persistentSurface->getBufferProducer(), true);
961    if (surface == NULL) {
962        return NULL;
963    }
964
965    jobject object = env->NewObject(
966            gPersistentSurfaceClassInfo.clazz,
967            gPersistentSurfaceClassInfo.ctor);
968
969    if (object == NULL) {
970        if (env->ExceptionCheck()) {
971            ALOGE("Could not create PersistentSurface.");
972            env->ExceptionClear();
973        }
974        return NULL;
975    }
976
977    jobject lock = env->GetObjectField(
978            object, gPersistentSurfaceClassInfo.mLock);
979    if (env->MonitorEnter(lock) == JNI_OK) {
980        env->CallVoidMethod(
981                object,
982                gPersistentSurfaceClassInfo.setNativeObjectLocked,
983                (jlong)surface.get());
984        env->SetLongField(
985                object,
986                gPersistentSurfaceClassInfo.mPersistentObject,
987                (jlong)persistentSurface.get());
988        env->MonitorExit(lock);
989    } else {
990        env->DeleteLocalRef(object);
991        object = NULL;
992    }
993    env->DeleteLocalRef(lock);
994
995    if (object != NULL) {
996        surface->incStrong(&sRefBaseOwner);
997        persistentSurface->incStrong(&sRefBaseOwner);
998    }
999
1000    return object;
1001}
1002
1003static void android_media_MediaCodec_releasePersistentInputSurface(
1004        JNIEnv* env, jclass /* clazz */, jobject object) {
1005    sp<PersistentSurface> persistentSurface;
1006
1007    jobject lock = env->GetObjectField(
1008            object, gPersistentSurfaceClassInfo.mLock);
1009    if (env->MonitorEnter(lock) == JNI_OK) {
1010        persistentSurface = reinterpret_cast<PersistentSurface *>(
1011            env->GetLongField(
1012                    object, gPersistentSurfaceClassInfo.mPersistentObject));
1013        env->SetLongField(
1014                object,
1015                gPersistentSurfaceClassInfo.mPersistentObject,
1016                (jlong)0);
1017        env->MonitorExit(lock);
1018    }
1019    env->DeleteLocalRef(lock);
1020
1021    if (persistentSurface != NULL) {
1022        persistentSurface->decStrong(&sRefBaseOwner);
1023    }
1024    // no need to release surface as it will be released by Surface's jni
1025}
1026
1027static void android_media_MediaCodec_setInputSurface(
1028        JNIEnv* env, jobject thiz, jobject object) {
1029    ALOGV("android_media_MediaCodec_setInputSurface");
1030
1031    sp<JMediaCodec> codec = getMediaCodec(env, thiz);
1032    if (codec == NULL) {
1033        throwExceptionAsNecessary(env, INVALID_OPERATION);
1034        return;
1035    }
1036
1037    sp<PersistentSurface> persistentSurface =
1038        android_media_MediaCodec_getPersistentInputSurface(env, object);
1039
1040    status_t err = codec->setInputSurface(persistentSurface);
1041    if (err != NO_ERROR) {
1042        throwExceptionAsNecessary(env, err);
1043    }
1044}
1045
1046static jobject android_media_MediaCodec_createInputSurface(JNIEnv* env,
1047        jobject thiz) {
1048    ALOGV("android_media_MediaCodec_createInputSurface");
1049
1050    sp<JMediaCodec> codec = getMediaCodec(env, thiz);
1051    if (codec == NULL) {
1052        throwExceptionAsNecessary(env, INVALID_OPERATION);
1053        return NULL;
1054    }
1055
1056    // Tell the MediaCodec that we want to use a Surface as input.
1057    sp<IGraphicBufferProducer> bufferProducer;
1058    status_t err = codec->createInputSurface(&bufferProducer);
1059    if (err != NO_ERROR) {
1060        throwExceptionAsNecessary(env, err);
1061        return NULL;
1062    }
1063
1064    // Wrap the IGBP in a Java-language Surface.
1065    return android_view_Surface_createFromIGraphicBufferProducer(env,
1066            bufferProducer);
1067}
1068
1069static void android_media_MediaCodec_start(JNIEnv *env, jobject thiz) {
1070    ALOGV("android_media_MediaCodec_start");
1071
1072    sp<JMediaCodec> codec = getMediaCodec(env, thiz);
1073
1074    if (codec == NULL) {
1075        throwExceptionAsNecessary(env, INVALID_OPERATION);
1076        return;
1077    }
1078
1079    status_t err = codec->start();
1080
1081    throwExceptionAsNecessary(env, err, ACTION_CODE_FATAL, "start failed");
1082}
1083
1084static void android_media_MediaCodec_stop(JNIEnv *env, jobject thiz) {
1085    ALOGV("android_media_MediaCodec_stop");
1086
1087    sp<JMediaCodec> codec = getMediaCodec(env, thiz);
1088
1089    if (codec == NULL) {
1090        throwExceptionAsNecessary(env, INVALID_OPERATION);
1091        return;
1092    }
1093
1094    status_t err = codec->stop();
1095
1096    throwExceptionAsNecessary(env, err);
1097}
1098
1099static void android_media_MediaCodec_reset(JNIEnv *env, jobject thiz) {
1100    ALOGV("android_media_MediaCodec_reset");
1101
1102    sp<JMediaCodec> codec = getMediaCodec(env, thiz);
1103
1104    if (codec == NULL) {
1105        throwExceptionAsNecessary(env, INVALID_OPERATION);
1106        return;
1107    }
1108
1109    status_t err = codec->reset();
1110    if (err != OK) {
1111        // treat all errors as fatal for now, though resource not available
1112        // errors could be treated as transient.
1113        // we also should avoid sending INVALID_OPERATION here due to
1114        // the transitory nature of reset(), it should not inadvertently
1115        // trigger an IllegalStateException.
1116        err = UNKNOWN_ERROR;
1117    }
1118    throwExceptionAsNecessary(env, err);
1119}
1120
1121static void android_media_MediaCodec_flush(JNIEnv *env, jobject thiz) {
1122    ALOGV("android_media_MediaCodec_flush");
1123
1124    sp<JMediaCodec> codec = getMediaCodec(env, thiz);
1125
1126    if (codec == NULL) {
1127        throwExceptionAsNecessary(env, INVALID_OPERATION);
1128        return;
1129    }
1130
1131    status_t err = codec->flush();
1132
1133    throwExceptionAsNecessary(env, err);
1134}
1135
1136static void android_media_MediaCodec_queueInputBuffer(
1137        JNIEnv *env,
1138        jobject thiz,
1139        jint index,
1140        jint offset,
1141        jint size,
1142        jlong timestampUs,
1143        jint flags) {
1144    ALOGV("android_media_MediaCodec_queueInputBuffer");
1145
1146    sp<JMediaCodec> codec = getMediaCodec(env, thiz);
1147
1148    if (codec == NULL) {
1149        throwExceptionAsNecessary(env, INVALID_OPERATION);
1150        return;
1151    }
1152
1153    AString errorDetailMsg;
1154
1155    status_t err = codec->queueInputBuffer(
1156            index, offset, size, timestampUs, flags, &errorDetailMsg);
1157
1158    throwExceptionAsNecessary(
1159            env, err, ACTION_CODE_FATAL, errorDetailMsg.empty() ? NULL : errorDetailMsg.c_str());
1160}
1161
1162static void android_media_MediaCodec_queueSecureInputBuffer(
1163        JNIEnv *env,
1164        jobject thiz,
1165        jint index,
1166        jint offset,
1167        jobject cryptoInfoObj,
1168        jlong timestampUs,
1169        jint flags) {
1170    ALOGV("android_media_MediaCodec_queueSecureInputBuffer");
1171
1172    sp<JMediaCodec> codec = getMediaCodec(env, thiz);
1173
1174    if (codec == NULL) {
1175        throwExceptionAsNecessary(env, INVALID_OPERATION);
1176        return;
1177    }
1178
1179    jint numSubSamples =
1180        env->GetIntField(cryptoInfoObj, gFields.cryptoInfoNumSubSamplesID);
1181
1182    jintArray numBytesOfClearDataObj =
1183        (jintArray)env->GetObjectField(
1184                cryptoInfoObj, gFields.cryptoInfoNumBytesOfClearDataID);
1185
1186    jintArray numBytesOfEncryptedDataObj =
1187        (jintArray)env->GetObjectField(
1188                cryptoInfoObj, gFields.cryptoInfoNumBytesOfEncryptedDataID);
1189
1190    jbyteArray keyObj =
1191        (jbyteArray)env->GetObjectField(cryptoInfoObj, gFields.cryptoInfoKeyID);
1192
1193    jbyteArray ivObj =
1194        (jbyteArray)env->GetObjectField(cryptoInfoObj, gFields.cryptoInfoIVID);
1195
1196    jint mode = env->GetIntField(cryptoInfoObj, gFields.cryptoInfoModeID);
1197
1198    status_t err = OK;
1199
1200    CryptoPlugin::SubSample *subSamples = NULL;
1201    jbyte *key = NULL;
1202    jbyte *iv = NULL;
1203
1204    if (numSubSamples <= 0) {
1205        err = -EINVAL;
1206    } else if (numBytesOfClearDataObj == NULL
1207            && numBytesOfEncryptedDataObj == NULL) {
1208        err = -EINVAL;
1209    } else if (numBytesOfEncryptedDataObj != NULL
1210            && env->GetArrayLength(numBytesOfEncryptedDataObj) < numSubSamples) {
1211        err = -ERANGE;
1212    } else if (numBytesOfClearDataObj != NULL
1213            && env->GetArrayLength(numBytesOfClearDataObj) < numSubSamples) {
1214        err = -ERANGE;
1215    // subSamples array may silently overflow if number of samples are too large.  Use
1216    // INT32_MAX as maximum allocation size may be less than SIZE_MAX on some platforms
1217    } else if ( CC_UNLIKELY(numSubSamples >= (signed)(INT32_MAX / sizeof(*subSamples))) ) {
1218        err = -EINVAL;
1219    } else {
1220        jboolean isCopy;
1221
1222        jint *numBytesOfClearData =
1223            (numBytesOfClearDataObj == NULL)
1224                ? NULL
1225                : env->GetIntArrayElements(numBytesOfClearDataObj, &isCopy);
1226
1227        jint *numBytesOfEncryptedData =
1228            (numBytesOfEncryptedDataObj == NULL)
1229                ? NULL
1230                : env->GetIntArrayElements(numBytesOfEncryptedDataObj, &isCopy);
1231
1232        subSamples = new CryptoPlugin::SubSample[numSubSamples];
1233
1234        for (jint i = 0; i < numSubSamples; ++i) {
1235            subSamples[i].mNumBytesOfClearData =
1236                (numBytesOfClearData == NULL) ? 0 : numBytesOfClearData[i];
1237
1238            subSamples[i].mNumBytesOfEncryptedData =
1239                (numBytesOfEncryptedData == NULL)
1240                    ? 0 : numBytesOfEncryptedData[i];
1241        }
1242
1243        if (numBytesOfEncryptedData != NULL) {
1244            env->ReleaseIntArrayElements(
1245                    numBytesOfEncryptedDataObj, numBytesOfEncryptedData, 0);
1246            numBytesOfEncryptedData = NULL;
1247        }
1248
1249        if (numBytesOfClearData != NULL) {
1250            env->ReleaseIntArrayElements(
1251                    numBytesOfClearDataObj, numBytesOfClearData, 0);
1252            numBytesOfClearData = NULL;
1253        }
1254    }
1255
1256    if (err == OK && keyObj != NULL) {
1257        if (env->GetArrayLength(keyObj) != 16) {
1258            err = -EINVAL;
1259        } else {
1260            jboolean isCopy;
1261            key = env->GetByteArrayElements(keyObj, &isCopy);
1262        }
1263    }
1264
1265    if (err == OK && ivObj != NULL) {
1266        if (env->GetArrayLength(ivObj) != 16) {
1267            err = -EINVAL;
1268        } else {
1269            jboolean isCopy;
1270            iv = env->GetByteArrayElements(ivObj, &isCopy);
1271        }
1272    }
1273
1274    AString errorDetailMsg;
1275
1276    if (err == OK) {
1277        err = codec->queueSecureInputBuffer(
1278                index, offset,
1279                subSamples, numSubSamples,
1280                (const uint8_t *)key, (const uint8_t *)iv,
1281                (CryptoPlugin::Mode)mode,
1282                timestampUs,
1283                flags,
1284                &errorDetailMsg);
1285    }
1286
1287    if (iv != NULL) {
1288        env->ReleaseByteArrayElements(ivObj, iv, 0);
1289        iv = NULL;
1290    }
1291
1292    if (key != NULL) {
1293        env->ReleaseByteArrayElements(keyObj, key, 0);
1294        key = NULL;
1295    }
1296
1297    delete[] subSamples;
1298    subSamples = NULL;
1299
1300    throwExceptionAsNecessary(
1301            env, err, ACTION_CODE_FATAL, errorDetailMsg.empty() ? NULL : errorDetailMsg.c_str());
1302}
1303
1304static jint android_media_MediaCodec_dequeueInputBuffer(
1305        JNIEnv *env, jobject thiz, jlong timeoutUs) {
1306    ALOGV("android_media_MediaCodec_dequeueInputBuffer");
1307
1308    sp<JMediaCodec> codec = getMediaCodec(env, thiz);
1309
1310    if (codec == NULL) {
1311        throwExceptionAsNecessary(env, INVALID_OPERATION);
1312        return -1;
1313    }
1314
1315    size_t index;
1316    status_t err = codec->dequeueInputBuffer(&index, timeoutUs);
1317
1318    if (err == OK) {
1319        return (jint) index;
1320    }
1321
1322    return throwExceptionAsNecessary(env, err);
1323}
1324
1325static jint android_media_MediaCodec_dequeueOutputBuffer(
1326        JNIEnv *env, jobject thiz, jobject bufferInfo, jlong timeoutUs) {
1327    ALOGV("android_media_MediaCodec_dequeueOutputBuffer");
1328
1329    sp<JMediaCodec> codec = getMediaCodec(env, thiz);
1330
1331    if (codec == NULL) {
1332        throwExceptionAsNecessary(env, INVALID_OPERATION);
1333        return 0;
1334    }
1335
1336    size_t index;
1337    status_t err = codec->dequeueOutputBuffer(
1338            env, bufferInfo, &index, timeoutUs);
1339
1340    if (err == OK) {
1341        return (jint) index;
1342    }
1343
1344    return throwExceptionAsNecessary(env, err);
1345}
1346
1347static void android_media_MediaCodec_releaseOutputBuffer(
1348        JNIEnv *env, jobject thiz,
1349        jint index, jboolean render, jboolean updatePTS, jlong timestampNs) {
1350    ALOGV("android_media_MediaCodec_renderOutputBufferAndRelease");
1351
1352    sp<JMediaCodec> codec = getMediaCodec(env, thiz);
1353
1354    if (codec == NULL) {
1355        throwExceptionAsNecessary(env, INVALID_OPERATION);
1356        return;
1357    }
1358
1359    status_t err = codec->releaseOutputBuffer(index, render, updatePTS, timestampNs);
1360
1361    throwExceptionAsNecessary(env, err);
1362}
1363
1364static void android_media_MediaCodec_signalEndOfInputStream(JNIEnv* env,
1365        jobject thiz) {
1366    ALOGV("android_media_MediaCodec_signalEndOfInputStream");
1367
1368    sp<JMediaCodec> codec = getMediaCodec(env, thiz);
1369    if (codec == NULL) {
1370        throwExceptionAsNecessary(env, INVALID_OPERATION);
1371        return;
1372    }
1373
1374    status_t err = codec->signalEndOfInputStream();
1375
1376    throwExceptionAsNecessary(env, err);
1377}
1378
1379static jobject android_media_MediaCodec_getFormatNative(
1380        JNIEnv *env, jobject thiz, jboolean input) {
1381    ALOGV("android_media_MediaCodec_getFormatNative");
1382
1383    sp<JMediaCodec> codec = getMediaCodec(env, thiz);
1384
1385    if (codec == NULL) {
1386        throwExceptionAsNecessary(env, INVALID_OPERATION);
1387        return NULL;
1388    }
1389
1390    jobject format;
1391    status_t err = codec->getFormat(env, input, &format);
1392
1393    if (err == OK) {
1394        return format;
1395    }
1396
1397    throwExceptionAsNecessary(env, err);
1398
1399    return NULL;
1400}
1401
1402static jobject android_media_MediaCodec_getOutputFormatForIndexNative(
1403        JNIEnv *env, jobject thiz, jint index) {
1404    ALOGV("android_media_MediaCodec_getOutputFormatForIndexNative");
1405
1406    sp<JMediaCodec> codec = getMediaCodec(env, thiz);
1407
1408    if (codec == NULL) {
1409        throwExceptionAsNecessary(env, INVALID_OPERATION);
1410        return NULL;
1411    }
1412
1413    jobject format;
1414    status_t err = codec->getOutputFormat(env, index, &format);
1415
1416    if (err == OK) {
1417        return format;
1418    }
1419
1420    throwExceptionAsNecessary(env, err);
1421
1422    return NULL;
1423}
1424
1425static jobjectArray android_media_MediaCodec_getBuffers(
1426        JNIEnv *env, jobject thiz, jboolean input) {
1427    ALOGV("android_media_MediaCodec_getBuffers");
1428
1429    sp<JMediaCodec> codec = getMediaCodec(env, thiz);
1430
1431    if (codec == NULL) {
1432        throwExceptionAsNecessary(env, INVALID_OPERATION);
1433        return NULL;
1434    }
1435
1436    jobjectArray buffers;
1437    status_t err = codec->getBuffers(env, input, &buffers);
1438
1439    if (err == OK) {
1440        return buffers;
1441    }
1442
1443    // if we're out of memory, an exception was already thrown
1444    if (err != NO_MEMORY) {
1445        throwExceptionAsNecessary(env, err);
1446    }
1447
1448    return NULL;
1449}
1450
1451static jobject android_media_MediaCodec_getBuffer(
1452        JNIEnv *env, jobject thiz, jboolean input, jint index) {
1453    ALOGV("android_media_MediaCodec_getBuffer");
1454
1455    sp<JMediaCodec> codec = getMediaCodec(env, thiz);
1456
1457    if (codec == NULL) {
1458        throwExceptionAsNecessary(env, INVALID_OPERATION);
1459        return NULL;
1460    }
1461
1462    jobject buffer;
1463    status_t err = codec->getBuffer(env, input, index, &buffer);
1464
1465    if (err == OK) {
1466        return buffer;
1467    }
1468
1469    // if we're out of memory, an exception was already thrown
1470    if (err != NO_MEMORY) {
1471        throwExceptionAsNecessary(env, err);
1472    }
1473
1474    return NULL;
1475}
1476
1477static jobject android_media_MediaCodec_getImage(
1478        JNIEnv *env, jobject thiz, jboolean input, jint index) {
1479    ALOGV("android_media_MediaCodec_getImage");
1480
1481    sp<JMediaCodec> codec = getMediaCodec(env, thiz);
1482
1483    if (codec == NULL) {
1484        throwExceptionAsNecessary(env, INVALID_OPERATION);
1485        return NULL;
1486    }
1487
1488    jobject image;
1489    status_t err = codec->getImage(env, input, index, &image);
1490
1491    if (err == OK) {
1492        return image;
1493    }
1494
1495    // if we're out of memory, an exception was already thrown
1496    if (err != NO_MEMORY) {
1497        throwExceptionAsNecessary(env, err);
1498    }
1499
1500    return NULL;
1501}
1502
1503static jobject android_media_MediaCodec_getName(
1504        JNIEnv *env, jobject thiz) {
1505    ALOGV("android_media_MediaCodec_getName");
1506
1507    sp<JMediaCodec> codec = getMediaCodec(env, thiz);
1508
1509    if (codec == NULL) {
1510        throwExceptionAsNecessary(env, INVALID_OPERATION);
1511        return NULL;
1512    }
1513
1514    jstring name;
1515    status_t err = codec->getName(env, &name);
1516
1517    if (err == OK) {
1518        return name;
1519    }
1520
1521    throwExceptionAsNecessary(env, err);
1522
1523    return NULL;
1524}
1525
1526static void android_media_MediaCodec_setParameters(
1527        JNIEnv *env, jobject thiz, jobjectArray keys, jobjectArray vals) {
1528    ALOGV("android_media_MediaCodec_setParameters");
1529
1530    sp<JMediaCodec> codec = getMediaCodec(env, thiz);
1531
1532    if (codec == NULL) {
1533        throwExceptionAsNecessary(env, INVALID_OPERATION);
1534        return;
1535    }
1536
1537    sp<AMessage> params;
1538    status_t err = ConvertKeyValueArraysToMessage(env, keys, vals, &params);
1539
1540    if (err == OK) {
1541        err = codec->setParameters(params);
1542    }
1543
1544    throwExceptionAsNecessary(env, err);
1545}
1546
1547static void android_media_MediaCodec_setVideoScalingMode(
1548        JNIEnv *env, jobject thiz, jint mode) {
1549    sp<JMediaCodec> codec = getMediaCodec(env, thiz);
1550
1551    if (codec == NULL) {
1552        throwExceptionAsNecessary(env, INVALID_OPERATION);
1553        return;
1554    }
1555
1556    if (mode != NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW
1557            && mode != NATIVE_WINDOW_SCALING_MODE_SCALE_CROP) {
1558        jniThrowException(env, "java/lang/InvalidArgumentException", NULL);
1559        return;
1560    }
1561
1562    codec->setVideoScalingMode(mode);
1563}
1564
1565static void android_media_MediaCodec_native_init(JNIEnv *env) {
1566    ScopedLocalRef<jclass> clazz(
1567            env, env->FindClass("android/media/MediaCodec"));
1568    CHECK(clazz.get() != NULL);
1569
1570    gFields.context = env->GetFieldID(clazz.get(), "mNativeContext", "J");
1571    CHECK(gFields.context != NULL);
1572
1573    gFields.postEventFromNativeID =
1574        env->GetMethodID(
1575                clazz.get(), "postEventFromNative", "(IIILjava/lang/Object;)V");
1576
1577    CHECK(gFields.postEventFromNativeID != NULL);
1578
1579    clazz.reset(env->FindClass("android/media/MediaCodec$CryptoInfo"));
1580    CHECK(clazz.get() != NULL);
1581
1582    gFields.cryptoInfoNumSubSamplesID =
1583        env->GetFieldID(clazz.get(), "numSubSamples", "I");
1584    CHECK(gFields.cryptoInfoNumSubSamplesID != NULL);
1585
1586    gFields.cryptoInfoNumBytesOfClearDataID =
1587        env->GetFieldID(clazz.get(), "numBytesOfClearData", "[I");
1588    CHECK(gFields.cryptoInfoNumBytesOfClearDataID != NULL);
1589
1590    gFields.cryptoInfoNumBytesOfEncryptedDataID =
1591        env->GetFieldID(clazz.get(), "numBytesOfEncryptedData", "[I");
1592    CHECK(gFields.cryptoInfoNumBytesOfEncryptedDataID != NULL);
1593
1594    gFields.cryptoInfoKeyID = env->GetFieldID(clazz.get(), "key", "[B");
1595    CHECK(gFields.cryptoInfoKeyID != NULL);
1596
1597    gFields.cryptoInfoIVID = env->GetFieldID(clazz.get(), "iv", "[B");
1598    CHECK(gFields.cryptoInfoIVID != NULL);
1599
1600    gFields.cryptoInfoModeID = env->GetFieldID(clazz.get(), "mode", "I");
1601    CHECK(gFields.cryptoInfoModeID != NULL);
1602
1603    clazz.reset(env->FindClass("android/media/MediaCodec$CryptoException"));
1604    CHECK(clazz.get() != NULL);
1605
1606    jfieldID field;
1607    field = env->GetStaticFieldID(clazz.get(), "ERROR_NO_KEY", "I");
1608    CHECK(field != NULL);
1609    gCryptoErrorCodes.cryptoErrorNoKey =
1610        env->GetStaticIntField(clazz.get(), field);
1611
1612    field = env->GetStaticFieldID(clazz.get(), "ERROR_KEY_EXPIRED", "I");
1613    CHECK(field != NULL);
1614    gCryptoErrorCodes.cryptoErrorKeyExpired =
1615        env->GetStaticIntField(clazz.get(), field);
1616
1617    field = env->GetStaticFieldID(clazz.get(), "ERROR_RESOURCE_BUSY", "I");
1618    CHECK(field != NULL);
1619    gCryptoErrorCodes.cryptoErrorResourceBusy =
1620        env->GetStaticIntField(clazz.get(), field);
1621
1622    field = env->GetStaticFieldID(clazz.get(), "ERROR_INSUFFICIENT_OUTPUT_PROTECTION", "I");
1623    CHECK(field != NULL);
1624    gCryptoErrorCodes.cryptoErrorInsufficientOutputProtection =
1625        env->GetStaticIntField(clazz.get(), field);
1626
1627    clazz.reset(env->FindClass("android/media/MediaCodec$CodecException"));
1628    CHECK(clazz.get() != NULL);
1629    field = env->GetStaticFieldID(clazz.get(), "ACTION_TRANSIENT", "I");
1630    CHECK(field != NULL);
1631    gCodecActionCodes.codecActionTransient =
1632        env->GetStaticIntField(clazz.get(), field);
1633
1634    field = env->GetStaticFieldID(clazz.get(), "ACTION_RECOVERABLE", "I");
1635    CHECK(field != NULL);
1636    gCodecActionCodes.codecActionRecoverable =
1637        env->GetStaticIntField(clazz.get(), field);
1638
1639    field = env->GetStaticFieldID(clazz.get(), "REASON_HARDWARE", "I");
1640    CHECK(field != NULL);
1641    gExceptionReason.reasonHardware =
1642        env->GetStaticIntField(clazz.get(), field);
1643
1644    field = env->GetStaticFieldID(clazz.get(), "REASON_RECLAIMED", "I");
1645    CHECK(field != NULL);
1646    gExceptionReason.reasonReclaimed =
1647        env->GetStaticIntField(clazz.get(), field);
1648
1649    clazz.reset(env->FindClass("android/view/Surface"));
1650    CHECK(clazz.get() != NULL);
1651
1652    field = env->GetFieldID(clazz.get(), "mLock", "Ljava/lang/Object;");
1653    CHECK(field != NULL);
1654    gPersistentSurfaceClassInfo.mLock = field;
1655
1656    jmethodID method = env->GetMethodID(clazz.get(), "setNativeObjectLocked", "(J)V");
1657    CHECK(method != NULL);
1658    gPersistentSurfaceClassInfo.setNativeObjectLocked = method;
1659
1660    clazz.reset(env->FindClass("android/media/MediaCodec$PersistentSurface"));
1661    CHECK(clazz.get() != NULL);
1662    gPersistentSurfaceClassInfo.clazz = (jclass)env->NewGlobalRef(clazz.get());
1663
1664    method = env->GetMethodID(clazz.get(), "<init>", "()V");
1665    CHECK(method != NULL);
1666    gPersistentSurfaceClassInfo.ctor = method;
1667
1668    field = env->GetFieldID(clazz.get(), "mPersistentObject", "J");
1669    CHECK(field != NULL);
1670    gPersistentSurfaceClassInfo.mPersistentObject = field;
1671}
1672
1673static void android_media_MediaCodec_native_setup(
1674        JNIEnv *env, jobject thiz,
1675        jstring name, jboolean nameIsType, jboolean encoder) {
1676    if (name == NULL) {
1677        jniThrowException(env, "java/lang/NullPointerException", NULL);
1678        return;
1679    }
1680
1681    const char *tmp = env->GetStringUTFChars(name, NULL);
1682
1683    if (tmp == NULL) {
1684        return;
1685    }
1686
1687    sp<JMediaCodec> codec = new JMediaCodec(env, thiz, tmp, nameIsType, encoder);
1688
1689    const status_t err = codec->initCheck();
1690    if (err == NAME_NOT_FOUND) {
1691        // fail and do not try again.
1692        jniThrowException(env, "java/lang/IllegalArgumentException",
1693                String8::format("Failed to initialize %s, error %#x", tmp, err));
1694        env->ReleaseStringUTFChars(name, tmp);
1695        return;
1696    } else if (err != OK) {
1697        // believed possible to try again
1698        jniThrowException(env, "java/io/IOException",
1699                String8::format("Failed to find matching codec %s, error %#x", tmp, err));
1700        env->ReleaseStringUTFChars(name, tmp);
1701        return;
1702    }
1703
1704    env->ReleaseStringUTFChars(name, tmp);
1705
1706    codec->registerSelf();
1707
1708    setMediaCodec(env,thiz, codec);
1709}
1710
1711static void android_media_MediaCodec_native_finalize(
1712        JNIEnv *env, jobject thiz) {
1713    android_media_MediaCodec_release(env, thiz);
1714}
1715
1716static JNINativeMethod gMethods[] = {
1717    { "native_release", "()V", (void *)android_media_MediaCodec_release },
1718
1719    { "native_reset", "()V", (void *)android_media_MediaCodec_reset },
1720
1721    { "native_releasePersistentInputSurface",
1722      "(Landroid/view/Surface;)V",
1723       (void *)android_media_MediaCodec_releasePersistentInputSurface},
1724
1725    { "native_createPersistentInputSurface",
1726      "()Landroid/media/MediaCodec$PersistentSurface;",
1727      (void *)android_media_MediaCodec_createPersistentInputSurface },
1728
1729    { "native_setInputSurface", "(Landroid/view/Surface;)V",
1730      (void *)android_media_MediaCodec_setInputSurface },
1731
1732    { "native_setCallback",
1733      "(Landroid/media/MediaCodec$Callback;)V",
1734      (void *)android_media_MediaCodec_native_setCallback },
1735
1736    { "native_configure",
1737      "([Ljava/lang/String;[Ljava/lang/Object;Landroid/view/Surface;"
1738      "Landroid/media/MediaCrypto;I)V",
1739      (void *)android_media_MediaCodec_native_configure },
1740
1741    { "native_setSurface",
1742      "(Landroid/view/Surface;)V",
1743      (void *)android_media_MediaCodec_native_setSurface },
1744
1745    { "createInputSurface", "()Landroid/view/Surface;",
1746      (void *)android_media_MediaCodec_createInputSurface },
1747
1748    { "native_start", "()V", (void *)android_media_MediaCodec_start },
1749    { "native_stop", "()V", (void *)android_media_MediaCodec_stop },
1750    { "native_flush", "()V", (void *)android_media_MediaCodec_flush },
1751
1752    { "native_queueInputBuffer", "(IIIJI)V",
1753      (void *)android_media_MediaCodec_queueInputBuffer },
1754
1755    { "native_queueSecureInputBuffer", "(IILandroid/media/MediaCodec$CryptoInfo;JI)V",
1756      (void *)android_media_MediaCodec_queueSecureInputBuffer },
1757
1758    { "native_dequeueInputBuffer", "(J)I",
1759      (void *)android_media_MediaCodec_dequeueInputBuffer },
1760
1761    { "native_dequeueOutputBuffer", "(Landroid/media/MediaCodec$BufferInfo;J)I",
1762      (void *)android_media_MediaCodec_dequeueOutputBuffer },
1763
1764    { "releaseOutputBuffer", "(IZZJ)V",
1765      (void *)android_media_MediaCodec_releaseOutputBuffer },
1766
1767    { "signalEndOfInputStream", "()V",
1768      (void *)android_media_MediaCodec_signalEndOfInputStream },
1769
1770    { "getFormatNative", "(Z)Ljava/util/Map;",
1771      (void *)android_media_MediaCodec_getFormatNative },
1772
1773    { "getOutputFormatNative", "(I)Ljava/util/Map;",
1774      (void *)android_media_MediaCodec_getOutputFormatForIndexNative },
1775
1776    { "getBuffers", "(Z)[Ljava/nio/ByteBuffer;",
1777      (void *)android_media_MediaCodec_getBuffers },
1778
1779    { "getBuffer", "(ZI)Ljava/nio/ByteBuffer;",
1780      (void *)android_media_MediaCodec_getBuffer },
1781
1782    { "getImage", "(ZI)Landroid/media/Image;",
1783      (void *)android_media_MediaCodec_getImage },
1784
1785    { "getName", "()Ljava/lang/String;",
1786      (void *)android_media_MediaCodec_getName },
1787
1788    { "setParameters", "([Ljava/lang/String;[Ljava/lang/Object;)V",
1789      (void *)android_media_MediaCodec_setParameters },
1790
1791    { "setVideoScalingMode", "(I)V",
1792      (void *)android_media_MediaCodec_setVideoScalingMode },
1793
1794    { "native_init", "()V", (void *)android_media_MediaCodec_native_init },
1795
1796    { "native_setup", "(Ljava/lang/String;ZZ)V",
1797      (void *)android_media_MediaCodec_native_setup },
1798
1799    { "native_finalize", "()V",
1800      (void *)android_media_MediaCodec_native_finalize },
1801};
1802
1803int register_android_media_MediaCodec(JNIEnv *env) {
1804    return AndroidRuntime::registerNativeMethods(env,
1805                "android/media/MediaCodec", gMethods, NELEM(gMethods));
1806}
1807