1/*
2 * Copyright 2015 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 "ImageWriter_JNI"
19#include "android_media_Utils.h"
20
21#include <utils/Log.h>
22#include <utils/String8.h>
23
24#include <gui/IProducerListener.h>
25#include <gui/Surface.h>
26#include <android_runtime/AndroidRuntime.h>
27#include <android_runtime/android_view_Surface.h>
28#include <camera3.h>
29#include <jni.h>
30#include <JNIHelp.h>
31
32#include <stdint.h>
33#include <inttypes.h>
34
35#define IMAGE_BUFFER_JNI_ID           "mNativeBuffer"
36
37// ----------------------------------------------------------------------------
38
39using namespace android;
40
41static struct {
42    jmethodID postEventFromNative;
43    jfieldID mWriterFormat;
44} gImageWriterClassInfo;
45
46static struct {
47    jfieldID mNativeBuffer;
48    jfieldID mNativeFenceFd;
49    jfieldID mPlanes;
50} gSurfaceImageClassInfo;
51
52static struct {
53    jclass clazz;
54    jmethodID ctor;
55} gSurfacePlaneClassInfo;
56
57// ----------------------------------------------------------------------------
58
59class JNIImageWriterContext : public BnProducerListener {
60public:
61    JNIImageWriterContext(JNIEnv* env, jobject weakThiz, jclass clazz);
62
63    virtual ~JNIImageWriterContext();
64
65    // Implementation of IProducerListener, used to notify the ImageWriter that the consumer
66    // has returned a buffer and it is ready for ImageWriter to dequeue.
67    virtual void onBufferReleased();
68
69    void setProducer(const sp<Surface>& producer) { mProducer = producer; }
70    Surface* getProducer() { return mProducer.get(); }
71
72    void setBufferFormat(int format) { mFormat = format; }
73    int getBufferFormat() { return mFormat; }
74
75    void setBufferWidth(int width) { mWidth = width; }
76    int getBufferWidth() { return mWidth; }
77
78    void setBufferHeight(int height) { mHeight = height; }
79    int getBufferHeight() { return mHeight; }
80
81private:
82    static JNIEnv* getJNIEnv(bool* needsDetach);
83    static void detachJNI();
84
85    sp<Surface> mProducer;
86    jobject mWeakThiz;
87    jclass mClazz;
88    int mFormat;
89    int mWidth;
90    int mHeight;
91};
92
93JNIImageWriterContext::JNIImageWriterContext(JNIEnv* env, jobject weakThiz, jclass clazz) :
94    mWeakThiz(env->NewGlobalRef(weakThiz)),
95    mClazz((jclass)env->NewGlobalRef(clazz)),
96    mFormat(0),
97    mWidth(-1),
98    mHeight(-1) {
99}
100
101JNIImageWriterContext::~JNIImageWriterContext() {
102    ALOGV("%s", __FUNCTION__);
103    bool needsDetach = false;
104    JNIEnv* env = getJNIEnv(&needsDetach);
105    if (env != NULL) {
106        env->DeleteGlobalRef(mWeakThiz);
107        env->DeleteGlobalRef(mClazz);
108    } else {
109        ALOGW("leaking JNI object references");
110    }
111    if (needsDetach) {
112        detachJNI();
113    }
114
115    mProducer.clear();
116}
117
118JNIEnv* JNIImageWriterContext::getJNIEnv(bool* needsDetach) {
119    ALOGV("%s", __FUNCTION__);
120    LOG_ALWAYS_FATAL_IF(needsDetach == NULL, "needsDetach is null!!!");
121    *needsDetach = false;
122    JNIEnv* env = AndroidRuntime::getJNIEnv();
123    if (env == NULL) {
124        JavaVMAttachArgs args = {JNI_VERSION_1_4, NULL, NULL};
125        JavaVM* vm = AndroidRuntime::getJavaVM();
126        int result = vm->AttachCurrentThread(&env, (void*) &args);
127        if (result != JNI_OK) {
128            ALOGE("thread attach failed: %#x", result);
129            return NULL;
130        }
131        *needsDetach = true;
132    }
133    return env;
134}
135
136void JNIImageWriterContext::detachJNI() {
137    ALOGV("%s", __FUNCTION__);
138    JavaVM* vm = AndroidRuntime::getJavaVM();
139    int result = vm->DetachCurrentThread();
140    if (result != JNI_OK) {
141        ALOGE("thread detach failed: %#x", result);
142    }
143}
144
145void JNIImageWriterContext::onBufferReleased() {
146    ALOGV("%s: buffer released", __FUNCTION__);
147    bool needsDetach = false;
148    JNIEnv* env = getJNIEnv(&needsDetach);
149    if (env != NULL) {
150        // Detach the buffer every time when a buffer consumption is done,
151        // need let this callback give a BufferItem, then only detach if it was attached to this
152        // Writer. Do the detach unconditionally for opaque format now. see b/19977520
153        if (mFormat == HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED) {
154            sp<Fence> fence;
155            sp<GraphicBuffer> buffer;
156            ALOGV("%s: One buffer is detached", __FUNCTION__);
157            mProducer->detachNextBuffer(&buffer, &fence);
158        }
159
160        env->CallStaticVoidMethod(mClazz, gImageWriterClassInfo.postEventFromNative, mWeakThiz);
161    } else {
162        ALOGW("onBufferReleased event will not posted");
163    }
164
165    if (needsDetach) {
166        detachJNI();
167    }
168}
169
170// ----------------------------------------------------------------------------
171
172extern "C" {
173
174// -------------------------------Private method declarations--------------
175
176static void Image_setNativeContext(JNIEnv* env, jobject thiz,
177        sp<GraphicBuffer> buffer, int fenceFd);
178static void Image_getNativeContext(JNIEnv* env, jobject thiz,
179        GraphicBuffer** buffer, int* fenceFd);
180static void Image_unlockIfLocked(JNIEnv* env, jobject thiz);
181
182// --------------------------ImageWriter methods---------------------------------------
183
184static void ImageWriter_classInit(JNIEnv* env, jclass clazz) {
185    ALOGV("%s:", __FUNCTION__);
186    jclass imageClazz = env->FindClass("android/media/ImageWriter$WriterSurfaceImage");
187    LOG_ALWAYS_FATAL_IF(imageClazz == NULL,
188            "can't find android/media/ImageWriter$WriterSurfaceImage");
189    gSurfaceImageClassInfo.mNativeBuffer = env->GetFieldID(
190            imageClazz, IMAGE_BUFFER_JNI_ID, "J");
191    LOG_ALWAYS_FATAL_IF(gSurfaceImageClassInfo.mNativeBuffer == NULL,
192            "can't find android/media/ImageWriter$WriterSurfaceImage.%s", IMAGE_BUFFER_JNI_ID);
193
194    gSurfaceImageClassInfo.mNativeFenceFd = env->GetFieldID(
195            imageClazz, "mNativeFenceFd", "I");
196    LOG_ALWAYS_FATAL_IF(gSurfaceImageClassInfo.mNativeFenceFd == NULL,
197            "can't find android/media/ImageWriter$WriterSurfaceImage.mNativeFenceFd");
198
199    gSurfaceImageClassInfo.mPlanes = env->GetFieldID(
200            imageClazz, "mPlanes", "[Landroid/media/ImageWriter$WriterSurfaceImage$SurfacePlane;");
201    LOG_ALWAYS_FATAL_IF(gSurfaceImageClassInfo.mPlanes == NULL,
202            "can't find android/media/ImageWriter$WriterSurfaceImage.mPlanes");
203
204    gImageWriterClassInfo.postEventFromNative = env->GetStaticMethodID(
205            clazz, "postEventFromNative", "(Ljava/lang/Object;)V");
206    LOG_ALWAYS_FATAL_IF(gImageWriterClassInfo.postEventFromNative == NULL,
207                        "can't find android/media/ImageWriter.postEventFromNative");
208
209    gImageWriterClassInfo.mWriterFormat = env->GetFieldID(
210            clazz, "mWriterFormat", "I");
211    LOG_ALWAYS_FATAL_IF(gImageWriterClassInfo.mWriterFormat == NULL,
212                        "can't find android/media/ImageWriter.mWriterFormat");
213
214    jclass planeClazz = env->FindClass("android/media/ImageWriter$WriterSurfaceImage$SurfacePlane");
215    LOG_ALWAYS_FATAL_IF(planeClazz == NULL, "Can not find SurfacePlane class");
216    // FindClass only gives a local reference of jclass object.
217    gSurfacePlaneClassInfo.clazz = (jclass) env->NewGlobalRef(planeClazz);
218    gSurfacePlaneClassInfo.ctor = env->GetMethodID(gSurfacePlaneClassInfo.clazz, "<init>",
219            "(Landroid/media/ImageWriter$WriterSurfaceImage;IILjava/nio/ByteBuffer;)V");
220    LOG_ALWAYS_FATAL_IF(gSurfacePlaneClassInfo.ctor == NULL,
221            "Can not find SurfacePlane constructor");
222}
223
224static jlong ImageWriter_init(JNIEnv* env, jobject thiz, jobject weakThiz, jobject jsurface,
225        jint maxImages) {
226    status_t res;
227
228    ALOGV("%s: maxImages:%d", __FUNCTION__, maxImages);
229
230    sp<Surface> surface(android_view_Surface_getSurface(env, jsurface));
231    if (surface == NULL) {
232        jniThrowException(env,
233                "java/lang/IllegalArgumentException",
234                "The surface has been released");
235        return 0;
236     }
237    sp<IGraphicBufferProducer> bufferProducer = surface->getIGraphicBufferProducer();
238
239    jclass clazz = env->GetObjectClass(thiz);
240    if (clazz == NULL) {
241        jniThrowRuntimeException(env, "Can't find android/graphics/ImageWriter");
242        return 0;
243    }
244    sp<JNIImageWriterContext> ctx(new JNIImageWriterContext(env, weakThiz, clazz));
245
246    sp<Surface> producer = new Surface(bufferProducer, /*controlledByApp*/false);
247    ctx->setProducer(producer);
248    /**
249     * NATIVE_WINDOW_API_CPU isn't a good choice here, as it makes the bufferQueue not connectable
250     * after disconnect. MEDIA or CAMERA are treated the same internally. The producer listener
251     * will be cleared after disconnect call.
252     */
253    producer->connect(/*api*/NATIVE_WINDOW_API_CAMERA, /*listener*/ctx);
254    jlong nativeCtx = reinterpret_cast<jlong>(ctx.get());
255
256    // Get the dimension and format of the producer.
257    sp<ANativeWindow> anw = producer;
258    int32_t width, height, format;
259    if ((res = anw->query(anw.get(), NATIVE_WINDOW_WIDTH, &width)) != OK) {
260        ALOGE("%s: Query Surface width failed: %s (%d)", __FUNCTION__, strerror(-res), res);
261        jniThrowRuntimeException(env, "Failed to query Surface width");
262        return 0;
263    }
264    ctx->setBufferWidth(width);
265
266    if ((res = anw->query(anw.get(), NATIVE_WINDOW_HEIGHT, &height)) != OK) {
267        ALOGE("%s: Query Surface height failed: %s (%d)", __FUNCTION__, strerror(-res), res);
268        jniThrowRuntimeException(env, "Failed to query Surface height");
269        return 0;
270    }
271    ctx->setBufferHeight(height);
272
273    if ((res = anw->query(anw.get(), NATIVE_WINDOW_FORMAT, &format)) != OK) {
274        ALOGE("%s: Query Surface format failed: %s (%d)", __FUNCTION__, strerror(-res), res);
275        jniThrowRuntimeException(env, "Failed to query Surface format");
276        return 0;
277    }
278    ctx->setBufferFormat(format);
279    env->SetIntField(thiz, gImageWriterClassInfo.mWriterFormat, reinterpret_cast<jint>(format));
280
281
282    if (!isFormatOpaque(format)) {
283        res = native_window_set_usage(anw.get(), GRALLOC_USAGE_SW_WRITE_OFTEN);
284        if (res != OK) {
285            ALOGE("%s: Configure usage %08x for format %08x failed: %s (%d)",
286                  __FUNCTION__, static_cast<unsigned int>(GRALLOC_USAGE_SW_WRITE_OFTEN),
287                  format, strerror(-res), res);
288            jniThrowRuntimeException(env, "Failed to SW_WRITE_OFTEN configure usage");
289            return 0;
290        }
291    }
292
293    int minUndequeuedBufferCount = 0;
294    res = anw->query(anw.get(),
295                NATIVE_WINDOW_MIN_UNDEQUEUED_BUFFERS, &minUndequeuedBufferCount);
296    if (res != OK) {
297        ALOGE("%s: Query producer undequeued buffer count failed: %s (%d)",
298                __FUNCTION__, strerror(-res), res);
299        jniThrowRuntimeException(env, "Query producer undequeued buffer count failed");
300        return 0;
301     }
302
303    size_t totalBufferCount = maxImages + minUndequeuedBufferCount;
304    res = native_window_set_buffer_count(anw.get(), totalBufferCount);
305    if (res != OK) {
306        ALOGE("%s: Set buffer count failed: %s (%d)", __FUNCTION__, strerror(-res), res);
307        jniThrowRuntimeException(env, "Set buffer count failed");
308        return 0;
309    }
310
311    if (ctx != 0) {
312        ctx->incStrong((void*)ImageWriter_init);
313    }
314    return nativeCtx;
315}
316
317static void ImageWriter_dequeueImage(JNIEnv* env, jobject thiz, jlong nativeCtx, jobject image) {
318    ALOGV("%s", __FUNCTION__);
319    JNIImageWriterContext* const ctx = reinterpret_cast<JNIImageWriterContext *>(nativeCtx);
320    if (ctx == NULL || thiz == NULL) {
321        jniThrowException(env, "java/lang/IllegalStateException",
322                "ImageWriterContext is not initialized");
323        return;
324    }
325
326    sp<ANativeWindow> anw = ctx->getProducer();
327    android_native_buffer_t *anb = NULL;
328    int fenceFd = -1;
329    status_t res = anw->dequeueBuffer(anw.get(), &anb, &fenceFd);
330    if (res != OK) {
331        ALOGE("%s: Dequeue buffer failed: %s (%d)", __FUNCTION__, strerror(-res), res);
332        switch (res) {
333            case NO_INIT:
334                jniThrowException(env, "java/lang/IllegalStateException",
335                    "Surface has been abandoned");
336                break;
337            default:
338                // TODO: handle other error cases here.
339                jniThrowRuntimeException(env, "dequeue buffer failed");
340        }
341        return;
342    }
343    // New GraphicBuffer object doesn't own the handle, thus the native buffer
344    // won't be freed when this object is destroyed.
345    sp<GraphicBuffer> buffer(new GraphicBuffer(anb, /*keepOwnership*/false));
346
347    // Note that:
348    // 1. No need to lock buffer now, will only lock it when the first getPlanes() is called.
349    // 2. Fence will be saved to mNativeFenceFd, and will consumed by lock/queue/cancel buffer
350    //    later.
351    // 3. need use lockAsync here, as it will handle the dequeued fence for us automatically.
352
353    // Finally, set the native info into image object.
354    Image_setNativeContext(env, image, buffer, fenceFd);
355}
356
357static void ImageWriter_close(JNIEnv* env, jobject thiz, jlong nativeCtx) {
358    ALOGV("%s:", __FUNCTION__);
359    JNIImageWriterContext* const ctx = reinterpret_cast<JNIImageWriterContext *>(nativeCtx);
360    if (ctx == NULL || thiz == NULL) {
361        // ImageWriter is already closed.
362        return;
363    }
364
365    ANativeWindow* producer = ctx->getProducer();
366    if (producer != NULL) {
367        /**
368         * NATIVE_WINDOW_API_CPU isn't a good choice here, as it makes the bufferQueue not
369         * connectable after disconnect. MEDIA or CAMERA are treated the same internally.
370         * The producer listener will be cleared after disconnect call.
371         */
372        status_t res = native_window_api_disconnect(producer, /*api*/NATIVE_WINDOW_API_CAMERA);
373        /**
374         * This is not an error. if client calling process dies, the window will
375         * also die and all calls to it will return DEAD_OBJECT, thus it's already
376         * "disconnected"
377         */
378        if (res == DEAD_OBJECT) {
379            ALOGW("%s: While disconnecting ImageWriter from native window, the"
380                    " native window died already", __FUNCTION__);
381        } else if (res != OK) {
382            ALOGE("%s: native window disconnect failed: %s (%d)",
383                    __FUNCTION__, strerror(-res), res);
384            jniThrowRuntimeException(env, "Native window disconnect failed");
385            return;
386        }
387    }
388
389    ctx->decStrong((void*)ImageWriter_init);
390}
391
392static void ImageWriter_cancelImage(JNIEnv* env, jobject thiz, jlong nativeCtx, jobject image) {
393    ALOGV("%s", __FUNCTION__);
394    JNIImageWriterContext* const ctx = reinterpret_cast<JNIImageWriterContext *>(nativeCtx);
395    if (ctx == NULL || thiz == NULL) {
396        ALOGW("ImageWriter#close called before Image#close, consider calling Image#close first");
397        return;
398    }
399
400    sp<ANativeWindow> anw = ctx->getProducer();
401
402    GraphicBuffer *buffer = NULL;
403    int fenceFd = -1;
404    Image_getNativeContext(env, image, &buffer, &fenceFd);
405    if (buffer == NULL) {
406        // Cancel an already cancelled image is harmless.
407        return;
408    }
409
410    // Unlock the image if it was locked
411    Image_unlockIfLocked(env, image);
412
413    anw->cancelBuffer(anw.get(), buffer, fenceFd);
414
415    Image_setNativeContext(env, image, NULL, -1);
416}
417
418static void ImageWriter_queueImage(JNIEnv* env, jobject thiz, jlong nativeCtx, jobject image,
419        jlong timestampNs, jint left, jint top, jint right, jint bottom) {
420    ALOGV("%s", __FUNCTION__);
421    JNIImageWriterContext* const ctx = reinterpret_cast<JNIImageWriterContext *>(nativeCtx);
422    if (ctx == NULL || thiz == NULL) {
423        jniThrowException(env, "java/lang/IllegalStateException",
424                "ImageWriterContext is not initialized");
425        return;
426    }
427
428    status_t res = OK;
429    sp<ANativeWindow> anw = ctx->getProducer();
430
431    GraphicBuffer *buffer = NULL;
432    int fenceFd = -1;
433    Image_getNativeContext(env, image, &buffer, &fenceFd);
434    if (buffer == NULL) {
435        jniThrowException(env, "java/lang/IllegalStateException",
436                "Image is not initialized");
437        return;
438    }
439
440    // Unlock image if it was locked.
441    Image_unlockIfLocked(env, image);
442
443    // Set timestamp
444    ALOGV("timestamp to be queued: %" PRId64, timestampNs);
445    res = native_window_set_buffers_timestamp(anw.get(), timestampNs);
446    if (res != OK) {
447        jniThrowRuntimeException(env, "Set timestamp failed");
448        return;
449    }
450
451    // Set crop
452    android_native_rect_t cropRect;
453    cropRect.left = left;
454    cropRect.top = top;
455    cropRect.right = right;
456    cropRect.bottom = bottom;
457    res = native_window_set_crop(anw.get(), &cropRect);
458    if (res != OK) {
459        jniThrowRuntimeException(env, "Set crop rect failed");
460        return;
461    }
462
463    // Finally, queue input buffer
464    res = anw->queueBuffer(anw.get(), buffer, fenceFd);
465    if (res != OK) {
466        ALOGE("%s: Queue buffer failed: %s (%d)", __FUNCTION__, strerror(-res), res);
467        switch (res) {
468            case NO_INIT:
469                jniThrowException(env, "java/lang/IllegalStateException",
470                    "Surface has been abandoned");
471                break;
472            default:
473                // TODO: handle other error cases here.
474                jniThrowRuntimeException(env, "Queue input buffer failed");
475        }
476        return;
477    }
478
479    // Clear the image native context: end of this image's lifecycle in public API.
480    Image_setNativeContext(env, image, NULL, -1);
481}
482
483static jint ImageWriter_attachAndQueueImage(JNIEnv* env, jobject thiz, jlong nativeCtx,
484        jlong nativeBuffer, jint imageFormat, jlong timestampNs, jint left, jint top,
485        jint right, jint bottom) {
486    ALOGV("%s", __FUNCTION__);
487    JNIImageWriterContext* const ctx = reinterpret_cast<JNIImageWriterContext *>(nativeCtx);
488    if (ctx == NULL || thiz == NULL) {
489        jniThrowException(env, "java/lang/IllegalStateException",
490                "ImageWriterContext is not initialized");
491        return -1;
492    }
493
494    sp<Surface> surface = ctx->getProducer();
495    status_t res = OK;
496    if (!isFormatOpaque(imageFormat)) {
497        // TODO: need implement, see b/19962027
498        jniThrowRuntimeException(env,
499                "nativeAttachImage for non-opaque image is not implement yet!!!");
500        return -1;
501    }
502
503    if (!isFormatOpaque(ctx->getBufferFormat())) {
504        jniThrowException(env, "java/lang/IllegalStateException",
505                "Trying to attach an opaque image into a non-opaque ImageWriter");
506        return -1;
507    }
508
509    // Image is guaranteed to be from ImageReader at this point, so it is safe to
510    // cast to BufferItem pointer.
511    BufferItem* opaqueBuffer = reinterpret_cast<BufferItem*>(nativeBuffer);
512    if (opaqueBuffer == NULL) {
513        jniThrowException(env, "java/lang/IllegalStateException",
514                "Image is not initialized or already closed");
515        return -1;
516    }
517
518    // Step 1. Attach Image
519    res = surface->attachBuffer(opaqueBuffer->mGraphicBuffer.get());
520    if (res != OK) {
521        ALOGE("Attach image failed: %s (%d)", strerror(-res), res);
522        switch (res) {
523            case NO_INIT:
524                jniThrowException(env, "java/lang/IllegalStateException",
525                    "Surface has been abandoned");
526                break;
527            default:
528                // TODO: handle other error cases here.
529                jniThrowRuntimeException(env, "nativeAttachImage failed!!!");
530        }
531        return res;
532    }
533    sp < ANativeWindow > anw = surface;
534
535    // Step 2. Set timestamp and crop. Note that we do not need unlock the image because
536    // it was not locked.
537    ALOGV("timestamp to be queued: %" PRId64, timestampNs);
538    res = native_window_set_buffers_timestamp(anw.get(), timestampNs);
539    if (res != OK) {
540        jniThrowRuntimeException(env, "Set timestamp failed");
541        return res;
542    }
543
544    android_native_rect_t cropRect;
545    cropRect.left = left;
546    cropRect.top = top;
547    cropRect.right = right;
548    cropRect.bottom = bottom;
549    res = native_window_set_crop(anw.get(), &cropRect);
550    if (res != OK) {
551        jniThrowRuntimeException(env, "Set crop rect failed");
552        return res;
553    }
554
555    // Step 3. Queue Image.
556    res = anw->queueBuffer(anw.get(), opaqueBuffer->mGraphicBuffer.get(), /*fenceFd*/
557            -1);
558    if (res != OK) {
559        ALOGE("%s: Queue buffer failed: %s (%d)", __FUNCTION__, strerror(-res), res);
560        switch (res) {
561            case NO_INIT:
562                jniThrowException(env, "java/lang/IllegalStateException",
563                    "Surface has been abandoned");
564                break;
565            default:
566                // TODO: handle other error cases here.
567                jniThrowRuntimeException(env, "Queue input buffer failed");
568        }
569        return res;
570    }
571
572    // Do not set the image native context. Since it would overwrite the existing native context
573    // of the image that is from ImageReader, the subsequent image close will run into issues.
574
575    return res;
576}
577
578// --------------------------Image methods---------------------------------------
579
580static void Image_getNativeContext(JNIEnv* env, jobject thiz,
581        GraphicBuffer** buffer, int* fenceFd) {
582    ALOGV("%s", __FUNCTION__);
583    if (buffer != NULL) {
584        GraphicBuffer *gb = reinterpret_cast<GraphicBuffer *>
585                  (env->GetLongField(thiz, gSurfaceImageClassInfo.mNativeBuffer));
586        *buffer = gb;
587    }
588
589    if (fenceFd != NULL) {
590        *fenceFd = reinterpret_cast<jint>(env->GetIntField(
591                thiz, gSurfaceImageClassInfo.mNativeFenceFd));
592    }
593}
594
595static void Image_setNativeContext(JNIEnv* env, jobject thiz,
596        sp<GraphicBuffer> buffer, int fenceFd) {
597    ALOGV("%s:", __FUNCTION__);
598    GraphicBuffer* p = NULL;
599    Image_getNativeContext(env, thiz, &p, /*fenceFd*/NULL);
600    if (buffer != 0) {
601        buffer->incStrong((void*)Image_setNativeContext);
602    }
603    if (p) {
604        p->decStrong((void*)Image_setNativeContext);
605    }
606    env->SetLongField(thiz, gSurfaceImageClassInfo.mNativeBuffer,
607            reinterpret_cast<jlong>(buffer.get()));
608
609    env->SetIntField(thiz, gSurfaceImageClassInfo.mNativeFenceFd, reinterpret_cast<jint>(fenceFd));
610}
611
612static void Image_unlockIfLocked(JNIEnv* env, jobject thiz) {
613    ALOGV("%s", __FUNCTION__);
614    GraphicBuffer* buffer;
615    Image_getNativeContext(env, thiz, &buffer, NULL);
616    if (buffer == NULL) {
617        jniThrowException(env, "java/lang/IllegalStateException",
618                "Image is not initialized");
619        return;
620    }
621
622    // Is locked?
623    bool isLocked = false;
624    jobject planes = NULL;
625    if (!isFormatOpaque(buffer->getPixelFormat())) {
626        planes = env->GetObjectField(thiz, gSurfaceImageClassInfo.mPlanes);
627    }
628    isLocked = (planes != NULL);
629    if (isLocked) {
630        // no need to use fence here, as we it will be consumed by either cancel or queue buffer.
631        status_t res = buffer->unlock();
632        if (res != OK) {
633            jniThrowRuntimeException(env, "unlock buffer failed");
634        }
635        ALOGV("Successfully unlocked the image");
636    }
637}
638
639static jint Image_getWidth(JNIEnv* env, jobject thiz) {
640    ALOGV("%s", __FUNCTION__);
641    GraphicBuffer* buffer;
642    Image_getNativeContext(env, thiz, &buffer, NULL);
643    if (buffer == NULL) {
644        jniThrowException(env, "java/lang/IllegalStateException",
645                "Image is not initialized");
646        return -1;
647    }
648
649    return buffer->getWidth();
650}
651
652static jint Image_getHeight(JNIEnv* env, jobject thiz) {
653    ALOGV("%s", __FUNCTION__);
654    GraphicBuffer* buffer;
655    Image_getNativeContext(env, thiz, &buffer, NULL);
656    if (buffer == NULL) {
657        jniThrowException(env, "java/lang/IllegalStateException",
658                "Image is not initialized");
659        return -1;
660    }
661
662    return buffer->getHeight();
663}
664
665static jint Image_getFormat(JNIEnv* env, jobject thiz) {
666    ALOGV("%s", __FUNCTION__);
667    GraphicBuffer* buffer;
668    Image_getNativeContext(env, thiz, &buffer, NULL);
669    if (buffer == NULL) {
670        jniThrowException(env, "java/lang/IllegalStateException",
671                "Image is not initialized");
672        return 0;
673    }
674
675    // ImageWriter doesn't support data space yet, assuming it is unknown.
676    PublicFormat publicFmt = android_view_Surface_mapHalFormatDataspaceToPublicFormat(
677            buffer->getPixelFormat(), HAL_DATASPACE_UNKNOWN);
678    return static_cast<jint>(publicFmt);
679}
680
681static void Image_setFenceFd(JNIEnv* env, jobject thiz, int fenceFd) {
682    ALOGV("%s:", __FUNCTION__);
683    env->SetIntField(thiz, gSurfaceImageClassInfo.mNativeFenceFd, reinterpret_cast<jint>(fenceFd));
684}
685
686static void Image_getLockedImage(JNIEnv* env, jobject thiz, LockedImage *image) {
687    ALOGV("%s", __FUNCTION__);
688    GraphicBuffer* buffer;
689    int fenceFd = -1;
690    Image_getNativeContext(env, thiz, &buffer, &fenceFd);
691    if (buffer == NULL) {
692        jniThrowException(env, "java/lang/IllegalStateException",
693                "Image is not initialized");
694        return;
695    }
696
697    // ImageWriter doesn't use crop by itself, app sets it, use the no crop version.
698    const Rect noCrop(buffer->width, buffer->height);
699    status_t res = lockImageFromBuffer(
700            buffer, GRALLOC_USAGE_SW_WRITE_OFTEN, noCrop, fenceFd, image);
701    // Clear the fenceFd as it is already consumed by lock call.
702    Image_setFenceFd(env, thiz, /*fenceFd*/-1);
703    if (res != OK) {
704        jniThrowExceptionFmt(env, "java/lang/RuntimeException",
705                "lock buffer failed for format 0x%x",
706                buffer->getPixelFormat());
707        return;
708    }
709
710    ALOGV("%s: Successfully locked the image", __FUNCTION__);
711    // crop, transform, scalingMode, timestamp, and frameNumber should be set by producer,
712    // and we don't set them here.
713}
714
715static void Image_getLockedImageInfo(JNIEnv* env, LockedImage* buffer, int idx,
716        int32_t writerFormat, uint8_t **base, uint32_t *size, int *pixelStride, int *rowStride) {
717    ALOGV("%s", __FUNCTION__);
718
719    status_t res = getLockedImageInfo(buffer, idx, writerFormat, base, size,
720            pixelStride, rowStride);
721    if (res != OK) {
722        jniThrowExceptionFmt(env, "java/lang/UnsupportedOperationException",
723                             "Pixel format: 0x%x is unsupported", buffer->flexFormat);
724    }
725}
726
727static jobjectArray Image_createSurfacePlanes(JNIEnv* env, jobject thiz,
728        int numPlanes, int writerFormat) {
729    ALOGV("%s: create SurfacePlane array with size %d", __FUNCTION__, numPlanes);
730    int rowStride, pixelStride;
731    uint8_t *pData;
732    uint32_t dataSize;
733    jobject byteBuffer;
734
735    int format = Image_getFormat(env, thiz);
736    if (isFormatOpaque(format) && numPlanes > 0) {
737        String8 msg;
738        msg.appendFormat("Format 0x%x is opaque, thus not writable, the number of planes (%d)"
739                " must be 0", format, numPlanes);
740        jniThrowException(env, "java/lang/IllegalArgumentException", msg.string());
741        return NULL;
742    }
743
744    jobjectArray surfacePlanes = env->NewObjectArray(numPlanes, gSurfacePlaneClassInfo.clazz,
745            /*initial_element*/NULL);
746    if (surfacePlanes == NULL) {
747        jniThrowRuntimeException(env, "Failed to create SurfacePlane arrays,"
748                " probably out of memory");
749        return NULL;
750    }
751    if (isFormatOpaque(format)) {
752        return surfacePlanes;
753    }
754
755    // Buildup buffer info: rowStride, pixelStride and byteBuffers.
756    LockedImage lockedImg = LockedImage();
757    Image_getLockedImage(env, thiz, &lockedImg);
758
759    // Create all SurfacePlanes
760    PublicFormat publicWriterFormat = static_cast<PublicFormat>(writerFormat);
761    writerFormat = android_view_Surface_mapPublicFormatToHalFormat(publicWriterFormat);
762    for (int i = 0; i < numPlanes; i++) {
763        Image_getLockedImageInfo(env, &lockedImg, i, writerFormat,
764                &pData, &dataSize, &pixelStride, &rowStride);
765        byteBuffer = env->NewDirectByteBuffer(pData, dataSize);
766        if ((byteBuffer == NULL) && (env->ExceptionCheck() == false)) {
767            jniThrowException(env, "java/lang/IllegalStateException",
768                    "Failed to allocate ByteBuffer");
769            return NULL;
770        }
771
772        // Finally, create this SurfacePlane.
773        jobject surfacePlane = env->NewObject(gSurfacePlaneClassInfo.clazz,
774                    gSurfacePlaneClassInfo.ctor, thiz, rowStride, pixelStride, byteBuffer);
775        env->SetObjectArrayElement(surfacePlanes, i, surfacePlane);
776    }
777
778    return surfacePlanes;
779}
780
781} // extern "C"
782
783// ----------------------------------------------------------------------------
784
785static JNINativeMethod gImageWriterMethods[] = {
786    {"nativeClassInit",         "()V",                        (void*)ImageWriter_classInit },
787    {"nativeInit",              "(Ljava/lang/Object;Landroid/view/Surface;I)J",
788                                                              (void*)ImageWriter_init },
789    {"nativeClose",              "(J)V",                      (void*)ImageWriter_close },
790    {"nativeAttachAndQueueImage", "(JJIJIIII)I",          (void*)ImageWriter_attachAndQueueImage },
791    {"nativeDequeueInputImage", "(JLandroid/media/Image;)V",  (void*)ImageWriter_dequeueImage },
792    {"nativeQueueInputImage",   "(JLandroid/media/Image;JIIII)V",  (void*)ImageWriter_queueImage },
793    {"cancelImage",             "(JLandroid/media/Image;)V",   (void*)ImageWriter_cancelImage },
794};
795
796static JNINativeMethod gImageMethods[] = {
797    {"nativeCreatePlanes",      "(II)[Landroid/media/ImageWriter$WriterSurfaceImage$SurfacePlane;",
798                                                              (void*)Image_createSurfacePlanes },
799    {"nativeGetWidth",         "()I",                         (void*)Image_getWidth },
800    {"nativeGetHeight",        "()I",                         (void*)Image_getHeight },
801    {"nativeGetFormat",        "()I",                         (void*)Image_getFormat },
802};
803
804int register_android_media_ImageWriter(JNIEnv *env) {
805
806    int ret1 = AndroidRuntime::registerNativeMethods(env,
807                   "android/media/ImageWriter", gImageWriterMethods, NELEM(gImageWriterMethods));
808
809    int ret2 = AndroidRuntime::registerNativeMethods(env,
810                   "android/media/ImageWriter$WriterSurfaceImage", gImageMethods, NELEM(gImageMethods));
811
812    return (ret1 || ret2);
813}
814
815