android_media_MediaMetadataRetriever.cpp revision a89f6e1bb2076518068084fea53c4ee5c1306b4c 
1/*
2**
3** Copyright 2008, 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 "MediaMetadataRetrieverJNI"
20
21#include <assert.h>
22#include <utils/Log.h>
23#include <utils/threads.h>
24#include <SkBitmap.h>
25#include <media/IMediaHTTPService.h>
26#include <media/mediametadataretriever.h>
27#include <media/mediascanner.h>
28#include <nativehelper/ScopedLocalRef.h>
29#include <private/media/VideoFrame.h>
30
31#include "jni.h"
32#include <nativehelper/JNIHelp.h>
33#include "android_runtime/AndroidRuntime.h"
34#include "android_media_MediaDataSource.h"
35#include "android_media_Utils.h"
36#include "android_util_Binder.h"
37
38#include "android/graphics/GraphicsJNI.h"
39
40using namespace android;
41
42struct fields_t {
43    jfieldID context;
44    jclass bitmapClazz;  // Must be a global ref
45    jmethodID createBitmapMethod;
46    jmethodID createScaledBitmapMethod;
47    jclass configClazz;  // Must be a global ref
48    jmethodID createConfigMethod;
49    jclass bitmapParamsClazz; // Must be a global ref
50    jfieldID inPreferredConfig;
51    jfieldID outActualConfig;
52    jclass arrayListClazz; // Must be a global ref
53    jmethodID arrayListInit;
54    jmethodID arrayListAdd;
55};
56
57static fields_t fields;
58static Mutex sLock;
59static const char* const kClassPathName = "android/media/MediaMetadataRetriever";
60
61static void process_media_retriever_call(JNIEnv *env, status_t opStatus, const char* exception, const char *message)
62{
63    if (opStatus == (status_t) INVALID_OPERATION) {
64        jniThrowException(env, "java/lang/IllegalStateException", NULL);
65    } else if (opStatus != (status_t) OK) {
66        if (strlen(message) > 230) {
67            // If the message is too long, don't bother displaying the status code.
68            jniThrowException( env, exception, message);
69        } else {
70            char msg[256];
71            // Append the status code to the message.
72            sprintf(msg, "%s: status = 0x%X", message, opStatus);
73            jniThrowException( env, exception, msg);
74        }
75    }
76}
77
78static sp<MediaMetadataRetriever> getRetriever(JNIEnv* env, jobject thiz)
79{
80    // No lock is needed, since it is called internally by other methods that are protected
81    MediaMetadataRetriever* retriever = (MediaMetadataRetriever*) env->GetLongField(thiz, fields.context);
82    return retriever;
83}
84
85static void setRetriever(JNIEnv* env, jobject thiz, const sp<MediaMetadataRetriever> &retriever)
86{
87    // No lock is needed, since it is called internally by other methods that are protected
88
89    if (retriever != NULL) {
90        retriever->incStrong(thiz);
91    }
92    sp<MediaMetadataRetriever> old = getRetriever(env, thiz);
93    if (old != NULL) {
94        old->decStrong(thiz);
95    }
96
97    env->SetLongField(thiz, fields.context, (jlong) retriever.get());
98}
99
100static void
101android_media_MediaMetadataRetriever_setDataSourceAndHeaders(
102        JNIEnv *env, jobject thiz, jobject httpServiceBinderObj, jstring path,
103        jobjectArray keys, jobjectArray values) {
104
105    ALOGV("setDataSource");
106    sp<MediaMetadataRetriever> retriever = getRetriever(env, thiz);
107    if (retriever == 0) {
108        jniThrowException(
109                env,
110                "java/lang/IllegalStateException", "No retriever available");
111
112        return;
113    }
114
115    if (!path) {
116        jniThrowException(
117                env, "java/lang/IllegalArgumentException", "Null pointer");
118
119        return;
120    }
121
122    const char *tmp = env->GetStringUTFChars(path, NULL);
123    if (!tmp) {  // OutOfMemoryError exception already thrown
124        return;
125    }
126
127    String8 pathStr(tmp);
128    env->ReleaseStringUTFChars(path, tmp);
129    tmp = NULL;
130
131    // Don't let somebody trick us in to reading some random block of memory
132    if (strncmp("mem://", pathStr.string(), 6) == 0) {
133        jniThrowException(
134                env, "java/lang/IllegalArgumentException", "Invalid pathname");
135        return;
136    }
137
138    // We build a similar KeyedVector out of it.
139    KeyedVector<String8, String8> headersVector;
140    if (!ConvertKeyValueArraysToKeyedVector(
141            env, keys, values, &headersVector)) {
142        return;
143    }
144
145    sp<IMediaHTTPService> httpService;
146    if (httpServiceBinderObj != NULL) {
147        sp<IBinder> binder = ibinderForJavaObject(env, httpServiceBinderObj);
148        httpService = interface_cast<IMediaHTTPService>(binder);
149    }
150
151    process_media_retriever_call(
152            env,
153            retriever->setDataSource(
154                httpService,
155                pathStr.string(),
156                headersVector.size() > 0 ? &headersVector : NULL),
157
158            "java/lang/RuntimeException",
159            "setDataSource failed");
160}
161
162static void android_media_MediaMetadataRetriever_setDataSourceFD(JNIEnv *env, jobject thiz, jobject fileDescriptor, jlong offset, jlong length)
163{
164    ALOGV("setDataSource");
165    sp<MediaMetadataRetriever> retriever = getRetriever(env, thiz);
166    if (retriever == 0) {
167        jniThrowException(env, "java/lang/IllegalStateException", "No retriever available");
168        return;
169    }
170    if (!fileDescriptor) {
171        jniThrowException(env, "java/lang/IllegalArgumentException", NULL);
172        return;
173    }
174    int fd = jniGetFDFromFileDescriptor(env, fileDescriptor);
175    if (offset < 0 || length < 0 || fd < 0) {
176        if (offset < 0) {
177            ALOGE("negative offset (%lld)", (long long)offset);
178        }
179        if (length < 0) {
180            ALOGE("negative length (%lld)", (long long)length);
181        }
182        if (fd < 0) {
183            ALOGE("invalid file descriptor");
184        }
185        jniThrowException(env, "java/lang/IllegalArgumentException", NULL);
186        return;
187    }
188    process_media_retriever_call(env, retriever->setDataSource(fd, offset, length), "java/lang/RuntimeException", "setDataSource failed");
189}
190
191static void android_media_MediaMetadataRetriever_setDataSourceCallback(JNIEnv *env, jobject thiz, jobject dataSource)
192{
193    ALOGV("setDataSourceCallback");
194    sp<MediaMetadataRetriever> retriever = getRetriever(env, thiz);
195    if (retriever == 0) {
196        jniThrowException(env, "java/lang/IllegalStateException", "No retriever available");
197        return;
198    }
199    if (dataSource == NULL) {
200        jniThrowException(env, "java/lang/IllegalArgumentException", NULL);
201        return;
202    }
203
204    sp<IDataSource> callbackDataSource = new JMediaDataSource(env, dataSource);
205    process_media_retriever_call(env, retriever->setDataSource(callbackDataSource), "java/lang/RuntimeException", "setDataSourceCallback failed");
206}
207
208template<typename T>
209static void rotate0(T* dst, const T* src, size_t width, size_t height)
210{
211    memcpy(dst, src, width * height * sizeof(T));
212}
213
214template<typename T>
215static void rotate90(T* dst, const T* src, size_t width, size_t height)
216{
217    for (size_t i = 0; i < height; ++i) {
218        for (size_t j = 0; j < width; ++j) {
219            dst[j * height + height - 1 - i] = src[i * width + j];
220        }
221    }
222}
223
224template<typename T>
225static void rotate180(T* dst, const T* src, size_t width, size_t height)
226{
227    for (size_t i = 0; i < height; ++i) {
228        for (size_t j = 0; j < width; ++j) {
229            dst[(height - 1 - i) * width + width - 1 - j] = src[i * width + j];
230        }
231    }
232}
233
234template<typename T>
235static void rotate270(T* dst, const T* src, size_t width, size_t height)
236{
237    for (size_t i = 0; i < height; ++i) {
238        for (size_t j = 0; j < width; ++j) {
239            dst[(width - 1 - j) * height + i] = src[i * width + j];
240        }
241    }
242}
243
244template<typename T>
245static void rotate(T *dst, const T *src, size_t width, size_t height, int angle)
246{
247    switch (angle) {
248        case 0:
249            rotate0(dst, src, width, height);
250            break;
251        case 90:
252            rotate90(dst, src, width, height);
253            break;
254        case 180:
255            rotate180(dst, src, width, height);
256            break;
257        case 270:
258            rotate270(dst, src, width, height);
259            break;
260    }
261}
262
263static jobject getBitmapFromVideoFrame(
264        JNIEnv *env, VideoFrame *videoFrame, jint dst_width, jint dst_height,
265        SkColorType outColorType) {
266    ALOGV("getBitmapFromVideoFrame: dimension = %dx%d and bytes = %d",
267            videoFrame->mDisplayWidth,
268            videoFrame->mDisplayHeight,
269            videoFrame->mSize);
270
271    ScopedLocalRef<jobject> config(env,
272            env->CallStaticObjectMethod(
273                    fields.configClazz,
274                    fields.createConfigMethod,
275                    GraphicsJNI::colorTypeToLegacyBitmapConfig(outColorType)));
276
277    uint32_t width, height, displayWidth, displayHeight;
278    bool swapWidthAndHeight = false;
279    if (videoFrame->mRotationAngle == 90 || videoFrame->mRotationAngle == 270) {
280        width = videoFrame->mHeight;
281        height = videoFrame->mWidth;
282        swapWidthAndHeight = true;
283        displayWidth = videoFrame->mDisplayHeight;
284        displayHeight = videoFrame->mDisplayWidth;
285    } else {
286        width = videoFrame->mWidth;
287        height = videoFrame->mHeight;
288        displayWidth = videoFrame->mDisplayWidth;
289        displayHeight = videoFrame->mDisplayHeight;
290    }
291
292    jobject jBitmap = env->CallStaticObjectMethod(
293                            fields.bitmapClazz,
294                            fields.createBitmapMethod,
295                            width,
296                            height,
297                            config.get());
298    if (jBitmap == NULL) {
299        if (env->ExceptionCheck()) {
300            env->ExceptionClear();
301        }
302        ALOGE("getBitmapFromVideoFrame: create Bitmap failed!");
303        return NULL;
304    }
305
306    SkBitmap bitmap;
307    GraphicsJNI::getSkBitmap(env, jBitmap, &bitmap);
308
309    if (outColorType == kRGB_565_SkColorType) {
310        rotate((uint16_t*)bitmap.getPixels(),
311               (uint16_t*)((char*)videoFrame + sizeof(VideoFrame)),
312               videoFrame->mWidth,
313               videoFrame->mHeight,
314               videoFrame->mRotationAngle);
315    } else {
316        rotate((uint32_t*)bitmap.getPixels(),
317               (uint32_t*)((char*)videoFrame + sizeof(VideoFrame)),
318               videoFrame->mWidth,
319               videoFrame->mHeight,
320               videoFrame->mRotationAngle);
321    }
322
323    if (dst_width <= 0 || dst_height <= 0) {
324        dst_width = displayWidth;
325        dst_height = displayHeight;
326    } else {
327        float factor = std::min((float)dst_width / (float)displayWidth,
328                (float)dst_height / (float)displayHeight);
329        dst_width = std::round(displayWidth * factor);
330        dst_height = std::round(displayHeight * factor);
331    }
332
333    if ((uint32_t)dst_width != videoFrame->mWidth ||
334        (uint32_t)dst_height != videoFrame->mHeight) {
335        ALOGV("Bitmap dimension is scaled from %dx%d to %dx%d",
336                width, height, dst_width, dst_height);
337        jobject scaledBitmap = env->CallStaticObjectMethod(fields.bitmapClazz,
338                                fields.createScaledBitmapMethod,
339                                jBitmap,
340                                dst_width,
341                                dst_height,
342                                true);
343
344        env->DeleteLocalRef(jBitmap);
345        return scaledBitmap;
346    }
347
348    return jBitmap;
349}
350
351static int getColorFormat(JNIEnv *env, jobject options) {
352    if (options == NULL) {
353        return HAL_PIXEL_FORMAT_RGBA_8888;
354    }
355
356    ScopedLocalRef<jobject> inConfig(env, env->GetObjectField(options, fields.inPreferredConfig));
357    SkColorType prefColorType = GraphicsJNI::getNativeBitmapColorType(env, inConfig.get());
358
359    if (prefColorType == kRGB_565_SkColorType) {
360        return HAL_PIXEL_FORMAT_RGB_565;
361    }
362    return HAL_PIXEL_FORMAT_RGBA_8888;
363}
364
365static SkColorType setOutColorType(JNIEnv *env, int colorFormat, jobject options) {
366    SkColorType outColorType = kN32_SkColorType;
367    if (colorFormat == HAL_PIXEL_FORMAT_RGB_565) {
368        outColorType = kRGB_565_SkColorType;
369    }
370
371    if (options != NULL) {
372        ScopedLocalRef<jobject> config(env,
373                env->CallStaticObjectMethod(
374                        fields.configClazz,
375                        fields.createConfigMethod,
376                        GraphicsJNI::colorTypeToLegacyBitmapConfig(outColorType)));
377
378        env->SetObjectField(options, fields.outActualConfig, config.get());
379    }
380    return outColorType;
381}
382
383static jobject android_media_MediaMetadataRetriever_getFrameAtTime(
384        JNIEnv *env, jobject thiz, jlong timeUs, jint option, jint dst_width, jint dst_height)
385{
386    ALOGV("getFrameAtTime: %lld us option: %d dst width: %d heigh: %d",
387            (long long)timeUs, option, dst_width, dst_height);
388    sp<MediaMetadataRetriever> retriever = getRetriever(env, thiz);
389    if (retriever == 0) {
390        jniThrowException(env, "java/lang/IllegalStateException", "No retriever available");
391        return NULL;
392    }
393
394    // Call native method to retrieve a video frame
395    VideoFrame *videoFrame = NULL;
396    sp<IMemory> frameMemory = retriever->getFrameAtTime(timeUs, option);
397    if (frameMemory != 0) {  // cast the shared structure to a VideoFrame object
398        videoFrame = static_cast<VideoFrame *>(frameMemory->pointer());
399    }
400    if (videoFrame == NULL) {
401        ALOGE("getFrameAtTime: videoFrame is a NULL pointer");
402        return NULL;
403    }
404
405    return getBitmapFromVideoFrame(env, videoFrame, dst_width, dst_height, kRGB_565_SkColorType);
406}
407
408static jobject android_media_MediaMetadataRetriever_getImageAtIndex(
409        JNIEnv *env, jobject thiz, jint index, jobject params)
410{
411    ALOGV("getImageAtIndex: index %d", index);
412    sp<MediaMetadataRetriever> retriever = getRetriever(env, thiz);
413    if (retriever == 0) {
414        jniThrowException(env, "java/lang/IllegalStateException", "No retriever available");
415        return NULL;
416    }
417
418    int colorFormat = getColorFormat(env, params);
419
420    // Call native method to retrieve an image
421    VideoFrame *videoFrame = NULL;
422    sp<IMemory> frameMemory = retriever->getImageAtIndex(index, colorFormat);
423    if (frameMemory != 0) {  // cast the shared structure to a VideoFrame object
424        videoFrame = static_cast<VideoFrame *>(frameMemory->pointer());
425    }
426    if (videoFrame == NULL) {
427        ALOGE("getImageAtIndex: videoFrame is a NULL pointer");
428        return NULL;
429    }
430
431    SkColorType outColorType = setOutColorType(env, colorFormat, params);
432
433    return getBitmapFromVideoFrame(env, videoFrame, -1, -1, outColorType);
434}
435
436static jobject android_media_MediaMetadataRetriever_getFrameAtIndex(
437        JNIEnv *env, jobject thiz, jint frameIndex, jint numFrames, jobject params)
438{
439    ALOGV("getFrameAtIndex: frameIndex %d, numFrames %d", frameIndex, numFrames);
440    sp<MediaMetadataRetriever> retriever = getRetriever(env, thiz);
441    if (retriever == 0) {
442        jniThrowException(env,
443                "java/lang/IllegalStateException", "No retriever available");
444        return NULL;
445    }
446
447    int colorFormat = getColorFormat(env, params);
448
449    std::vector<sp<IMemory> > frames;
450    status_t err = retriever->getFrameAtIndex(&frames, frameIndex, numFrames, colorFormat);
451    if (err != OK || frames.size() == 0) {
452        ALOGE("failed to get frames from retriever, err=%d, size=%zu",
453                err, frames.size());
454        return NULL;
455    }
456    jobject arrayList = env->NewObject(fields.arrayListClazz, fields.arrayListInit);
457    if (arrayList == NULL) {
458        ALOGE("can't create bitmap array list object");
459        return NULL;
460    }
461
462    SkColorType outColorType = setOutColorType(env, colorFormat, params);
463
464    for (size_t i = 0; i < frames.size(); i++) {
465        if (frames[i] == NULL || frames[i]->pointer() == NULL) {
466            ALOGE("video frame at index %zu is a NULL pointer", frameIndex + i);
467            continue;
468        }
469        VideoFrame *videoFrame = static_cast<VideoFrame *>(frames[i]->pointer());
470        jobject bitmapObj = getBitmapFromVideoFrame(env, videoFrame, -1, -1, outColorType);
471        env->CallBooleanMethod(arrayList, fields.arrayListAdd, bitmapObj);
472        env->DeleteLocalRef(bitmapObj);
473    }
474    return arrayList;
475}
476
477static jbyteArray android_media_MediaMetadataRetriever_getEmbeddedPicture(
478        JNIEnv *env, jobject thiz, jint pictureType)
479{
480    ALOGV("getEmbeddedPicture: %d", pictureType);
481    sp<MediaMetadataRetriever> retriever = getRetriever(env, thiz);
482    if (retriever == 0) {
483        jniThrowException(env, "java/lang/IllegalStateException", "No retriever available");
484        return NULL;
485    }
486    MediaAlbumArt* mediaAlbumArt = NULL;
487
488    // FIXME:
489    // Use pictureType to retrieve the intended embedded picture and also change
490    // the method name to getEmbeddedPicture().
491    sp<IMemory> albumArtMemory = retriever->extractAlbumArt();
492    if (albumArtMemory != 0) {  // cast the shared structure to a MediaAlbumArt object
493        mediaAlbumArt = static_cast<MediaAlbumArt *>(albumArtMemory->pointer());
494    }
495    if (mediaAlbumArt == NULL) {
496        ALOGE("getEmbeddedPicture: Call to getEmbeddedPicture failed.");
497        return NULL;
498    }
499
500    jbyteArray array = env->NewByteArray(mediaAlbumArt->size());
501    if (!array) {  // OutOfMemoryError exception has already been thrown.
502        ALOGE("getEmbeddedPicture: OutOfMemoryError is thrown.");
503    } else {
504        const jbyte* data =
505                reinterpret_cast<const jbyte*>(mediaAlbumArt->data());
506        env->SetByteArrayRegion(array, 0, mediaAlbumArt->size(), data);
507    }
508
509    // No need to delete mediaAlbumArt here
510    return array;
511}
512
513static jobject android_media_MediaMetadataRetriever_extractMetadata(JNIEnv *env, jobject thiz, jint keyCode)
514{
515    ALOGV("extractMetadata");
516    sp<MediaMetadataRetriever> retriever = getRetriever(env, thiz);
517    if (retriever == 0) {
518        jniThrowException(env, "java/lang/IllegalStateException", "No retriever available");
519        return NULL;
520    }
521    const char* value = retriever->extractMetadata(keyCode);
522    if (!value) {
523        ALOGV("extractMetadata: Metadata is not found");
524        return NULL;
525    }
526    ALOGV("extractMetadata: value (%s) for keyCode(%d)", value, keyCode);
527    return env->NewStringUTF(value);
528}
529
530static void android_media_MediaMetadataRetriever_release(JNIEnv *env, jobject thiz)
531{
532    ALOGV("release");
533    Mutex::Autolock lock(sLock);
534    setRetriever(env, thiz, NULL);
535}
536
537static void android_media_MediaMetadataRetriever_native_finalize(JNIEnv *env, jobject thiz)
538{
539    ALOGV("native_finalize");
540    // No lock is needed, since android_media_MediaMetadataRetriever_release() is protected
541    android_media_MediaMetadataRetriever_release(env, thiz);
542}
543
544// This function gets a field ID, which in turn causes class initialization.
545// It is called from a static block in MediaMetadataRetriever, which won't run until the
546// first time an instance of this class is used.
547static void android_media_MediaMetadataRetriever_native_init(JNIEnv *env)
548{
549    ScopedLocalRef<jclass> clazz(env, env->FindClass(kClassPathName));
550    if (clazz.get() == NULL) {
551        return;
552    }
553
554    fields.context = env->GetFieldID(clazz.get(), "mNativeContext", "J");
555    if (fields.context == NULL) {
556        return;
557    }
558
559    clazz.reset(env->FindClass("android/graphics/Bitmap"));
560    if (clazz.get() == NULL) {
561        return;
562    }
563    fields.bitmapClazz = (jclass) env->NewGlobalRef(clazz.get());
564    if (fields.bitmapClazz == NULL) {
565        return;
566    }
567    fields.createBitmapMethod =
568            env->GetStaticMethodID(fields.bitmapClazz, "createBitmap",
569                    "(IILandroid/graphics/Bitmap$Config;)"
570                    "Landroid/graphics/Bitmap;");
571    if (fields.createBitmapMethod == NULL) {
572        return;
573    }
574    fields.createScaledBitmapMethod =
575            env->GetStaticMethodID(fields.bitmapClazz, "createScaledBitmap",
576                    "(Landroid/graphics/Bitmap;IIZ)"
577                    "Landroid/graphics/Bitmap;");
578    if (fields.createScaledBitmapMethod == NULL) {
579        return;
580    }
581
582    clazz.reset(env->FindClass("android/graphics/Bitmap$Config"));
583    if (clazz.get() == NULL) {
584        return;
585    }
586    fields.configClazz = (jclass) env->NewGlobalRef(clazz.get());
587    if (fields.configClazz == NULL) {
588        return;
589    }
590    fields.createConfigMethod =
591            env->GetStaticMethodID(fields.configClazz, "nativeToConfig",
592                    "(I)Landroid/graphics/Bitmap$Config;");
593    if (fields.createConfigMethod == NULL) {
594        return;
595    }
596
597    clazz.reset(env->FindClass("android/media/MediaMetadataRetriever$BitmapParams"));
598    if (clazz.get() == NULL) {
599        return;
600    }
601    fields.bitmapParamsClazz = (jclass) env->NewGlobalRef(clazz.get());
602    if (fields.bitmapParamsClazz == NULL) {
603        return;
604    }
605    fields.inPreferredConfig = env->GetFieldID(fields.bitmapParamsClazz,
606            "inPreferredConfig", "Landroid/graphics/Bitmap$Config;");
607    if (fields.inPreferredConfig == NULL) {
608        return;
609    }
610    fields.outActualConfig = env->GetFieldID(fields.bitmapParamsClazz,
611            "outActualConfig", "Landroid/graphics/Bitmap$Config;");
612    if (fields.outActualConfig == NULL) {
613        return;
614    }
615
616    clazz.reset(env->FindClass("java/util/ArrayList"));
617    if (clazz.get() == NULL) {
618        return;
619    }
620    fields.arrayListClazz = (jclass) env->NewGlobalRef(clazz.get());
621    if (fields.arrayListClazz == NULL) {
622        return;
623    }
624    fields.arrayListInit = env->GetMethodID(clazz.get(), "<init>", "()V");
625    if (fields.arrayListInit == NULL) {
626        return;
627    }
628    fields.arrayListAdd = env->GetMethodID(clazz.get(), "add", "(Ljava/lang/Object;)Z");
629    if (fields.arrayListAdd == NULL) {
630        return;
631    }
632}
633
634static void android_media_MediaMetadataRetriever_native_setup(JNIEnv *env, jobject thiz)
635{
636    ALOGV("native_setup");
637    sp<MediaMetadataRetriever> retriever = new MediaMetadataRetriever();
638    if (retriever == 0) {
639        jniThrowException(env, "java/lang/RuntimeException", "Out of memory");
640        return;
641    }
642    setRetriever(env, thiz, retriever);
643}
644
645// JNI mapping between Java methods and native methods
646static const JNINativeMethod nativeMethods[] = {
647        {
648            "_setDataSource",
649            "(Landroid/os/IBinder;Ljava/lang/String;[Ljava/lang/String;[Ljava/lang/String;)V",
650            (void *)android_media_MediaMetadataRetriever_setDataSourceAndHeaders
651        },
652
653        {"setDataSource",   "(Ljava/io/FileDescriptor;JJ)V",
654                (void *)android_media_MediaMetadataRetriever_setDataSourceFD},
655        {"_setDataSource",   "(Landroid/media/MediaDataSource;)V",
656                (void *)android_media_MediaMetadataRetriever_setDataSourceCallback},
657        {"_getFrameAtTime", "(JIII)Landroid/graphics/Bitmap;",
658                (void *)android_media_MediaMetadataRetriever_getFrameAtTime},
659        {
660            "_getImageAtIndex",
661            "(ILandroid/media/MediaMetadataRetriever$BitmapParams;)Landroid/graphics/Bitmap;",
662            (void *)android_media_MediaMetadataRetriever_getImageAtIndex
663        },
664
665        {
666            "_getFrameAtIndex",
667            "(IILandroid/media/MediaMetadataRetriever$BitmapParams;)Ljava/util/List;",
668            (void *)android_media_MediaMetadataRetriever_getFrameAtIndex
669        },
670
671        {"extractMetadata", "(I)Ljava/lang/String;",
672                (void *)android_media_MediaMetadataRetriever_extractMetadata},
673        {"getEmbeddedPicture", "(I)[B",
674                (void *)android_media_MediaMetadataRetriever_getEmbeddedPicture},
675        {"release",         "()V",
676                (void *)android_media_MediaMetadataRetriever_release},
677        {"native_finalize", "()V",
678                (void *)android_media_MediaMetadataRetriever_native_finalize},
679        {"native_setup",    "()V",
680                (void *)android_media_MediaMetadataRetriever_native_setup},
681        {"native_init",     "()V",
682                (void *)android_media_MediaMetadataRetriever_native_init},
683};
684
685// This function only registers the native methods, and is called from
686// JNI_OnLoad in android_media_MediaPlayer.cpp
687int register_android_media_MediaMetadataRetriever(JNIEnv *env)
688{
689    return AndroidRuntime::registerNativeMethods
690        (env, kClassPathName, nativeMethods, NELEM(nativeMethods));
691}
692