android_media_ImageWriter.cpp revision 0375cb042d54a6d7c93795b4d117b138f02bd1e0
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 <utils/Log.h>
20#include <utils/String8.h>
21
22#include <gui/IProducerListener.h>
23#include <gui/Surface.h>
24#include <gui/CpuConsumer.h>
25#include <android_runtime/AndroidRuntime.h>
26#include <android_runtime/android_view_Surface.h>
27#include <camera3.h>
28
29#include <jni.h>
30#include <JNIHelp.h>
31
32#include <stdint.h>
33#include <inttypes.h>
34
35#define ALIGN(x, mask) ( ((x) + (mask) - 1) & ~((mask) - 1) )
36
37#define IMAGE_BUFFER_JNI_ID           "mNativeBuffer"
38
39// ----------------------------------------------------------------------------
40
41using namespace android;
42
43enum {
44    IMAGE_WRITER_MAX_NUM_PLANES = 3,
45};
46
47static struct {
48    jmethodID postEventFromNative;
49    jfieldID mWriterFormat;
50} gImageWriterClassInfo;
51
52static struct {
53    jfieldID mNativeBuffer;
54    jfieldID mNativeFenceFd;
55    jfieldID mPlanes;
56} gSurfaceImageClassInfo;
57
58static struct {
59    jclass clazz;
60    jmethodID ctor;
61} gSurfacePlaneClassInfo;
62
63typedef CpuConsumer::LockedBuffer LockedImage;
64
65// ----------------------------------------------------------------------------
66
67class JNIImageWriterContext : public BnProducerListener {
68public:
69    JNIImageWriterContext(JNIEnv* env, jobject weakThiz, jclass clazz);
70
71    virtual ~JNIImageWriterContext();
72
73    // Implementation of IProducerListener, used to notify the ImageWriter that the consumer
74    // has returned a buffer and it is ready for ImageWriter to dequeue.
75    virtual void onBufferReleased();
76
77    void setProducer(const sp<Surface>& producer) { mProducer = producer; }
78    Surface* getProducer() { return mProducer.get(); }
79
80    void setBufferFormat(int format) { mFormat = format; }
81    int getBufferFormat() { return mFormat; }
82
83    void setBufferWidth(int width) { mWidth = width; }
84    int getBufferWidth() { return mWidth; }
85
86    void setBufferHeight(int height) { mHeight = height; }
87    int getBufferHeight() { return mHeight; }
88
89private:
90    static JNIEnv* getJNIEnv(bool* needsDetach);
91    static void detachJNI();
92
93    sp<Surface> mProducer;
94    jobject mWeakThiz;
95    jclass mClazz;
96    int mFormat;
97    int mWidth;
98    int mHeight;
99};
100
101JNIImageWriterContext::JNIImageWriterContext(JNIEnv* env, jobject weakThiz, jclass clazz) :
102    mWeakThiz(env->NewGlobalRef(weakThiz)),
103    mClazz((jclass)env->NewGlobalRef(clazz)),
104    mFormat(0),
105    mWidth(-1),
106    mHeight(-1) {
107}
108
109JNIImageWriterContext::~JNIImageWriterContext() {
110    ALOGV("%s", __FUNCTION__);
111    bool needsDetach = false;
112    JNIEnv* env = getJNIEnv(&needsDetach);
113    if (env != NULL) {
114        env->DeleteGlobalRef(mWeakThiz);
115        env->DeleteGlobalRef(mClazz);
116    } else {
117        ALOGW("leaking JNI object references");
118    }
119    if (needsDetach) {
120        detachJNI();
121    }
122
123    mProducer.clear();
124}
125
126JNIEnv* JNIImageWriterContext::getJNIEnv(bool* needsDetach) {
127    ALOGV("%s", __FUNCTION__);
128    LOG_ALWAYS_FATAL_IF(needsDetach == NULL, "needsDetach is null!!!");
129    *needsDetach = false;
130    JNIEnv* env = AndroidRuntime::getJNIEnv();
131    if (env == NULL) {
132        JavaVMAttachArgs args = {JNI_VERSION_1_4, NULL, NULL};
133        JavaVM* vm = AndroidRuntime::getJavaVM();
134        int result = vm->AttachCurrentThread(&env, (void*) &args);
135        if (result != JNI_OK) {
136            ALOGE("thread attach failed: %#x", result);
137            return NULL;
138        }
139        *needsDetach = true;
140    }
141    return env;
142}
143
144void JNIImageWriterContext::detachJNI() {
145    ALOGV("%s", __FUNCTION__);
146    JavaVM* vm = AndroidRuntime::getJavaVM();
147    int result = vm->DetachCurrentThread();
148    if (result != JNI_OK) {
149        ALOGE("thread detach failed: %#x", result);
150    }
151}
152
153void JNIImageWriterContext::onBufferReleased() {
154    ALOGV("%s: buffer released", __FUNCTION__);
155    bool needsDetach = false;
156    JNIEnv* env = getJNIEnv(&needsDetach);
157    if (env != NULL) {
158        // Detach the buffer every time when a buffer consumption is done,
159        // need let this callback give a BufferItem, then only detach if it was attached to this
160        // Writer. Do the detach unconditionally for opaque format now. see b/19977520
161        if (mFormat == HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED) {
162            sp<Fence> fence;
163            sp<GraphicBuffer> buffer;
164            ALOGV("%s: One buffer is detached", __FUNCTION__);
165            mProducer->detachNextBuffer(&buffer, &fence);
166        }
167
168        env->CallStaticVoidMethod(mClazz, gImageWriterClassInfo.postEventFromNative, mWeakThiz);
169    } else {
170        ALOGW("onBufferReleased event will not posted");
171    }
172
173    if (needsDetach) {
174        detachJNI();
175    }
176}
177
178// ----------------------------------------------------------------------------
179
180extern "C" {
181
182// -------------------------------Private method declarations--------------
183
184static bool isPossiblyYUV(PixelFormat format);
185static void Image_setNativeContext(JNIEnv* env, jobject thiz,
186        sp<GraphicBuffer> buffer, int fenceFd);
187static void Image_getNativeContext(JNIEnv* env, jobject thiz,
188        GraphicBuffer** buffer, int* fenceFd);
189static void Image_unlockIfLocked(JNIEnv* env, jobject thiz);
190static bool isFormatOpaque(int format);
191
192// --------------------------ImageWriter methods---------------------------------------
193
194static void ImageWriter_classInit(JNIEnv* env, jclass clazz) {
195    ALOGV("%s:", __FUNCTION__);
196    jclass imageClazz = env->FindClass("android/media/ImageWriter$WriterSurfaceImage");
197    LOG_ALWAYS_FATAL_IF(imageClazz == NULL,
198            "can't find android/media/ImageWriter$WriterSurfaceImage");
199    gSurfaceImageClassInfo.mNativeBuffer = env->GetFieldID(
200            imageClazz, IMAGE_BUFFER_JNI_ID, "J");
201    LOG_ALWAYS_FATAL_IF(gSurfaceImageClassInfo.mNativeBuffer == NULL,
202            "can't find android/media/ImageWriter$WriterSurfaceImage.%s", IMAGE_BUFFER_JNI_ID);
203
204    gSurfaceImageClassInfo.mNativeFenceFd = env->GetFieldID(
205            imageClazz, "mNativeFenceFd", "I");
206    LOG_ALWAYS_FATAL_IF(gSurfaceImageClassInfo.mNativeFenceFd == NULL,
207            "can't find android/media/ImageWriter$WriterSurfaceImage.mNativeFenceFd");
208
209    gSurfaceImageClassInfo.mPlanes = env->GetFieldID(
210            imageClazz, "mPlanes", "[Landroid/media/ImageWriter$WriterSurfaceImage$SurfacePlane;");
211    LOG_ALWAYS_FATAL_IF(gSurfaceImageClassInfo.mPlanes == NULL,
212            "can't find android/media/ImageWriter$WriterSurfaceImage.mPlanes");
213
214    gImageWriterClassInfo.postEventFromNative = env->GetStaticMethodID(
215            clazz, "postEventFromNative", "(Ljava/lang/Object;)V");
216    LOG_ALWAYS_FATAL_IF(gImageWriterClassInfo.postEventFromNative == NULL,
217                        "can't find android/media/ImageWriter.postEventFromNative");
218
219    gImageWriterClassInfo.mWriterFormat = env->GetFieldID(
220            clazz, "mWriterFormat", "I");
221    LOG_ALWAYS_FATAL_IF(gImageWriterClassInfo.mWriterFormat == NULL,
222                        "can't find android/media/ImageWriter.mWriterFormat");
223
224    jclass planeClazz = env->FindClass("android/media/ImageWriter$WriterSurfaceImage$SurfacePlane");
225    LOG_ALWAYS_FATAL_IF(planeClazz == NULL, "Can not find SurfacePlane class");
226    // FindClass only gives a local reference of jclass object.
227    gSurfacePlaneClassInfo.clazz = (jclass) env->NewGlobalRef(planeClazz);
228    gSurfacePlaneClassInfo.ctor = env->GetMethodID(gSurfacePlaneClassInfo.clazz, "<init>",
229            "(Landroid/media/ImageWriter$WriterSurfaceImage;IILjava/nio/ByteBuffer;)V");
230    LOG_ALWAYS_FATAL_IF(gSurfacePlaneClassInfo.ctor == NULL,
231            "Can not find SurfacePlane constructor");
232}
233
234static jlong ImageWriter_init(JNIEnv* env, jobject thiz, jobject weakThiz, jobject jsurface,
235        jint maxImages) {
236    status_t res;
237
238    ALOGV("%s: maxImages:%d", __FUNCTION__, maxImages);
239
240    sp<Surface> surface(android_view_Surface_getSurface(env, jsurface));
241    if (surface == NULL) {
242        jniThrowException(env,
243                "java/lang/IllegalArgumentException",
244                "The surface has been released");
245        return 0;
246     }
247    sp<IGraphicBufferProducer> bufferProducer = surface->getIGraphicBufferProducer();
248
249    jclass clazz = env->GetObjectClass(thiz);
250    if (clazz == NULL) {
251        jniThrowRuntimeException(env, "Can't find android/graphics/ImageWriter");
252        return 0;
253    }
254    sp<JNIImageWriterContext> ctx(new JNIImageWriterContext(env, weakThiz, clazz));
255
256    sp<Surface> producer = new Surface(bufferProducer, /*controlledByApp*/false);
257    ctx->setProducer(producer);
258    /**
259     * NATIVE_WINDOW_API_CPU isn't a good choice here, as it makes the bufferQueue not connectable
260     * after disconnect. MEDIA or CAMERA are treated the same internally. The producer listener
261     * will be cleared after disconnect call.
262     */
263    producer->connect(/*api*/NATIVE_WINDOW_API_CAMERA, /*listener*/ctx);
264    jlong nativeCtx = reinterpret_cast<jlong>(ctx.get());
265
266    // Get the dimension and format of the producer.
267    sp<ANativeWindow> anw = producer;
268    int32_t width, height, format;
269    if ((res = anw->query(anw.get(), NATIVE_WINDOW_WIDTH, &width)) != OK) {
270        ALOGE("%s: Query Surface width failed: %s (%d)", __FUNCTION__, strerror(-res), res);
271        jniThrowRuntimeException(env, "Failed to query Surface width");
272        return 0;
273    }
274    ctx->setBufferWidth(width);
275
276    if ((res = anw->query(anw.get(), NATIVE_WINDOW_HEIGHT, &height)) != OK) {
277        ALOGE("%s: Query Surface height failed: %s (%d)", __FUNCTION__, strerror(-res), res);
278        jniThrowRuntimeException(env, "Failed to query Surface height");
279        return 0;
280    }
281    ctx->setBufferHeight(height);
282
283    if ((res = anw->query(anw.get(), NATIVE_WINDOW_FORMAT, &format)) != OK) {
284        ALOGE("%s: Query Surface format failed: %s (%d)", __FUNCTION__, strerror(-res), res);
285        jniThrowRuntimeException(env, "Failed to query Surface format");
286        return 0;
287    }
288    ctx->setBufferFormat(format);
289    env->SetIntField(thiz, gImageWriterClassInfo.mWriterFormat, reinterpret_cast<jint>(format));
290
291
292    if (!isFormatOpaque(format)) {
293        res = native_window_set_usage(anw.get(), GRALLOC_USAGE_SW_WRITE_OFTEN);
294        if (res != OK) {
295            ALOGE("%s: Configure usage %08x for format %08x failed: %s (%d)",
296                  __FUNCTION__, static_cast<unsigned int>(GRALLOC_USAGE_SW_WRITE_OFTEN),
297                  format, strerror(-res), res);
298            jniThrowRuntimeException(env, "Failed to SW_WRITE_OFTEN configure usage");
299            return 0;
300        }
301    }
302
303    int minUndequeuedBufferCount = 0;
304    res = anw->query(anw.get(),
305                NATIVE_WINDOW_MIN_UNDEQUEUED_BUFFERS, &minUndequeuedBufferCount);
306    if (res != OK) {
307        ALOGE("%s: Query producer undequeued buffer count failed: %s (%d)",
308                __FUNCTION__, strerror(-res), res);
309        jniThrowRuntimeException(env, "Query producer undequeued buffer count failed");
310        return 0;
311     }
312
313    size_t totalBufferCount = maxImages + minUndequeuedBufferCount;
314    res = native_window_set_buffer_count(anw.get(), totalBufferCount);
315    if (res != OK) {
316        ALOGE("%s: Set buffer count failed: %s (%d)", __FUNCTION__, strerror(-res), res);
317        jniThrowRuntimeException(env, "Set buffer count failed");
318        return 0;
319    }
320
321    if (ctx != 0) {
322        ctx->incStrong((void*)ImageWriter_init);
323    }
324    return nativeCtx;
325}
326
327static void ImageWriter_dequeueImage(JNIEnv* env, jobject thiz, jlong nativeCtx, jobject image) {
328    ALOGV("%s", __FUNCTION__);
329    JNIImageWriterContext* const ctx = reinterpret_cast<JNIImageWriterContext *>(nativeCtx);
330    if (ctx == NULL || thiz == NULL) {
331        jniThrowException(env, "java/lang/IllegalStateException",
332                "ImageWriterContext is not initialized");
333        return;
334    }
335
336    sp<ANativeWindow> anw = ctx->getProducer();
337    android_native_buffer_t *anb = NULL;
338    int fenceFd = -1;
339    status_t res = anw->dequeueBuffer(anw.get(), &anb, &fenceFd);
340    if (res != OK) {
341        // TODO: handle different error cases here.
342        ALOGE("%s: Dequeue buffer failed: %s (%d)", __FUNCTION__, strerror(-res), res);
343        jniThrowRuntimeException(env, "dequeue buffer failed");
344        return;
345    }
346    // New GraphicBuffer object doesn't own the handle, thus the native buffer
347    // won't be freed when this object is destroyed.
348    sp<GraphicBuffer> buffer(new GraphicBuffer(anb, /*keepOwnership*/false));
349
350    // Note that:
351    // 1. No need to lock buffer now, will only lock it when the first getPlanes() is called.
352    // 2. Fence will be saved to mNativeFenceFd, and will consumed by lock/queue/cancel buffer
353    //    later.
354    // 3. need use lockAsync here, as it will handle the dequeued fence for us automatically.
355
356    // Finally, set the native info into image object.
357    Image_setNativeContext(env, image, buffer, fenceFd);
358}
359
360static void ImageWriter_close(JNIEnv* env, jobject thiz, jlong nativeCtx) {
361    ALOGV("%s:", __FUNCTION__);
362    JNIImageWriterContext* const ctx = reinterpret_cast<JNIImageWriterContext *>(nativeCtx);
363    if (ctx == NULL || thiz == NULL) {
364        // ImageWriter is already closed.
365        return;
366    }
367
368    ANativeWindow* producer = ctx->getProducer();
369    if (producer != NULL) {
370        /**
371         * NATIVE_WINDOW_API_CPU isn't a good choice here, as it makes the bufferQueue not
372         * connectable after disconnect. MEDIA or CAMERA are treated the same internally.
373         * The producer listener will be cleared after disconnect call.
374         */
375        status_t res = native_window_api_disconnect(producer, /*api*/NATIVE_WINDOW_API_CAMERA);
376        /**
377         * This is not an error. if client calling process dies, the window will
378         * also die and all calls to it will return DEAD_OBJECT, thus it's already
379         * "disconnected"
380         */
381        if (res == DEAD_OBJECT) {
382            ALOGW("%s: While disconnecting ImageWriter from native window, the"
383                    " native window died already", __FUNCTION__);
384        } else if (res != OK) {
385            ALOGE("%s: native window disconnect failed: %s (%d)",
386                    __FUNCTION__, strerror(-res), res);
387            jniThrowRuntimeException(env, "Native window disconnect failed");
388            return;
389        }
390    }
391
392    ctx->decStrong((void*)ImageWriter_init);
393}
394
395static void ImageWriter_cancelImage(JNIEnv* env, jobject thiz, jlong nativeCtx, jobject image) {
396    ALOGV("%s", __FUNCTION__);
397    JNIImageWriterContext* const ctx = reinterpret_cast<JNIImageWriterContext *>(nativeCtx);
398    if (ctx == NULL || thiz == NULL) {
399        jniThrowException(env, "java/lang/IllegalStateException",
400                "ImageWriterContext is not initialized");
401        return;
402    }
403
404    sp<ANativeWindow> anw = ctx->getProducer();
405
406    GraphicBuffer *buffer = NULL;
407    int fenceFd = -1;
408    Image_getNativeContext(env, image, &buffer, &fenceFd);
409    if (buffer == NULL) {
410        jniThrowException(env, "java/lang/IllegalStateException",
411                "Image is not initialized");
412        return;
413    }
414
415    // Unlock the image if it was locked
416    Image_unlockIfLocked(env, image);
417
418    anw->cancelBuffer(anw.get(), buffer, fenceFd);
419
420    Image_setNativeContext(env, image, NULL, -1);
421}
422
423static void ImageWriter_queueImage(JNIEnv* env, jobject thiz, jlong nativeCtx, jobject image,
424        jlong timestampNs, jint left, jint top, jint right, jint bottom) {
425    ALOGV("%s", __FUNCTION__);
426    JNIImageWriterContext* const ctx = reinterpret_cast<JNIImageWriterContext *>(nativeCtx);
427    if (ctx == NULL || thiz == NULL) {
428        jniThrowException(env, "java/lang/IllegalStateException",
429                "ImageWriterContext is not initialized");
430        return;
431    }
432
433    status_t res = OK;
434    sp<ANativeWindow> anw = ctx->getProducer();
435
436    GraphicBuffer *buffer = NULL;
437    int fenceFd = -1;
438    Image_getNativeContext(env, image, &buffer, &fenceFd);
439    if (buffer == NULL) {
440        jniThrowException(env, "java/lang/IllegalStateException",
441                "Image is not initialized");
442        return;
443    }
444
445    // Unlock image if it was locked.
446    Image_unlockIfLocked(env, image);
447
448    // Set timestamp
449    ALOGV("timestamp to be queued: %" PRId64, timestampNs);
450    res = native_window_set_buffers_timestamp(anw.get(), timestampNs);
451    if (res != OK) {
452        jniThrowRuntimeException(env, "Set timestamp failed");
453        return;
454    }
455
456    // Set crop
457    android_native_rect_t cropRect;
458    cropRect.left = left;
459    cropRect.top = top;
460    cropRect.right = right;
461    cropRect.bottom = bottom;
462    res = native_window_set_crop(anw.get(), &cropRect);
463    if (res != OK) {
464        jniThrowRuntimeException(env, "Set crop rect failed");
465        return;
466    }
467
468    // Finally, queue input buffer
469    res = anw->queueBuffer(anw.get(), buffer, fenceFd);
470    if (res != OK) {
471        jniThrowRuntimeException(env, "Queue input buffer failed");
472        return;
473    }
474
475    // Clear the image native context: end of this image's lifecycle in public API.
476    Image_setNativeContext(env, image, NULL, -1);
477}
478
479static jint ImageWriter_attachAndQueueImage(JNIEnv* env, jobject thiz, jlong nativeCtx,
480        jlong nativeBuffer, jint imageFormat, jlong timestampNs, jint left, jint top,
481        jint right, jint bottom) {
482    ALOGV("%s", __FUNCTION__);
483    JNIImageWriterContext* const ctx = reinterpret_cast<JNIImageWriterContext *>(nativeCtx);
484    if (ctx == NULL || thiz == NULL) {
485        jniThrowException(env, "java/lang/IllegalStateException",
486                "ImageWriterContext is not initialized");
487        return -1;
488    }
489
490    sp<Surface> surface = ctx->getProducer();
491    status_t res = OK;
492    if (!isFormatOpaque(imageFormat)) {
493        // TODO: need implement, see b/19962027
494        jniThrowRuntimeException(env,
495                "nativeAttachImage for non-opaque image is not implement yet!!!");
496        return -1;
497    }
498
499    if (!isFormatOpaque(ctx->getBufferFormat())) {
500        jniThrowException(env, "java/lang/IllegalStateException",
501                "Trying to attach an opaque image into a non-opaque ImageWriter");
502        return -1;
503    }
504
505    // Image is guaranteed to be from ImageReader at this point, so it is safe to
506    // cast to BufferItem pointer.
507    BufferItem* opaqueBuffer = reinterpret_cast<BufferItem*>(nativeBuffer);
508    if (opaqueBuffer == NULL) {
509        jniThrowException(env, "java/lang/IllegalStateException",
510                "Image is not initialized or already closed");
511        return -1;
512    }
513
514    // Step 1. Attach Image
515    res = surface->attachBuffer(opaqueBuffer->mGraphicBuffer.get());
516    if (res != OK) {
517        // TODO: handle different error case separately.
518        ALOGE("Attach image failed: %s (%d)", strerror(-res), res);
519        jniThrowRuntimeException(env, "nativeAttachImage failed!!!");
520        return res;
521    }
522    sp < ANativeWindow > anw = surface;
523
524    // Step 2. Set timestamp and crop. Note that we do not need unlock the image because
525    // it was not locked.
526    ALOGV("timestamp to be queued: %" PRId64, timestampNs);
527    res = native_window_set_buffers_timestamp(anw.get(), timestampNs);
528    if (res != OK) {
529        jniThrowRuntimeException(env, "Set timestamp failed");
530        return res;
531    }
532
533    android_native_rect_t cropRect;
534    cropRect.left = left;
535    cropRect.top = top;
536    cropRect.right = right;
537    cropRect.bottom = bottom;
538    res = native_window_set_crop(anw.get(), &cropRect);
539    if (res != OK) {
540        jniThrowRuntimeException(env, "Set crop rect failed");
541        return res;
542    }
543
544    // Step 3. Queue Image.
545    res = anw->queueBuffer(anw.get(), opaqueBuffer->mGraphicBuffer.get(), /*fenceFd*/
546            -1);
547    if (res != OK) {
548        jniThrowRuntimeException(env, "Queue input buffer failed");
549        return res;
550    }
551
552    // Do not set the image native context. Since it would overwrite the existing native context
553    // of the image that is from ImageReader, the subsequent image close will run into issues.
554
555    return res;
556}
557
558// --------------------------Image methods---------------------------------------
559
560static void Image_getNativeContext(JNIEnv* env, jobject thiz,
561        GraphicBuffer** buffer, int* fenceFd) {
562    ALOGV("%s", __FUNCTION__);
563    if (buffer != NULL) {
564        GraphicBuffer *gb = reinterpret_cast<GraphicBuffer *>
565                  (env->GetLongField(thiz, gSurfaceImageClassInfo.mNativeBuffer));
566        *buffer = gb;
567    }
568
569    if (fenceFd != NULL) {
570        *fenceFd = reinterpret_cast<jint>(env->GetIntField(
571                thiz, gSurfaceImageClassInfo.mNativeFenceFd));
572    }
573}
574
575static void Image_setNativeContext(JNIEnv* env, jobject thiz,
576        sp<GraphicBuffer> buffer, int fenceFd) {
577    ALOGV("%s:", __FUNCTION__);
578    GraphicBuffer* p = NULL;
579    Image_getNativeContext(env, thiz, &p, /*fenceFd*/NULL);
580    if (buffer != 0) {
581        buffer->incStrong((void*)Image_setNativeContext);
582    }
583    if (p) {
584        p->decStrong((void*)Image_setNativeContext);
585    }
586    env->SetLongField(thiz, gSurfaceImageClassInfo.mNativeBuffer,
587            reinterpret_cast<jlong>(buffer.get()));
588
589    env->SetIntField(thiz, gSurfaceImageClassInfo.mNativeFenceFd, reinterpret_cast<jint>(fenceFd));
590}
591
592static void Image_unlockIfLocked(JNIEnv* env, jobject thiz) {
593    ALOGV("%s", __FUNCTION__);
594    GraphicBuffer* buffer;
595    Image_getNativeContext(env, thiz, &buffer, NULL);
596    if (buffer == NULL) {
597        jniThrowException(env, "java/lang/IllegalStateException",
598                "Image is not initialized");
599        return;
600    }
601
602    // Is locked?
603    bool isLocked = false;
604    jobject planes = NULL;
605    if (!isFormatOpaque(buffer->getPixelFormat())) {
606        planes = env->GetObjectField(thiz, gSurfaceImageClassInfo.mPlanes);
607    }
608    isLocked = (planes != NULL);
609    if (isLocked) {
610        // no need to use fence here, as we it will be consumed by either cancel or queue buffer.
611        status_t res = buffer->unlock();
612        if (res != OK) {
613            jniThrowRuntimeException(env, "unlock buffer failed");
614        }
615        ALOGV("Successfully unlocked the image");
616    }
617}
618
619static jint Image_getWidth(JNIEnv* env, jobject thiz) {
620    ALOGV("%s", __FUNCTION__);
621    GraphicBuffer* buffer;
622    Image_getNativeContext(env, thiz, &buffer, NULL);
623    if (buffer == NULL) {
624        jniThrowException(env, "java/lang/IllegalStateException",
625                "Image is not initialized");
626        return -1;
627    }
628
629    return buffer->getWidth();
630}
631
632static jint Image_getHeight(JNIEnv* env, jobject thiz) {
633    ALOGV("%s", __FUNCTION__);
634    GraphicBuffer* buffer;
635    Image_getNativeContext(env, thiz, &buffer, NULL);
636    if (buffer == NULL) {
637        jniThrowException(env, "java/lang/IllegalStateException",
638                "Image is not initialized");
639        return -1;
640    }
641
642    return buffer->getHeight();
643}
644
645// Some formats like JPEG defined with different values between android.graphics.ImageFormat and
646// graphics.h, need convert to the one defined in graphics.h here.
647static int Image_getPixelFormat(JNIEnv* env, int format) {
648    int jpegFormat;
649    jfieldID fid;
650
651    ALOGV("%s: format = 0x%x", __FUNCTION__, format);
652
653    jclass imageFormatClazz = env->FindClass("android/graphics/ImageFormat");
654    ALOG_ASSERT(imageFormatClazz != NULL);
655
656    fid = env->GetStaticFieldID(imageFormatClazz, "JPEG", "I");
657    jpegFormat = env->GetStaticIntField(imageFormatClazz, fid);
658
659    // Translate the JPEG to BLOB for camera purpose.
660    if (format == jpegFormat) {
661        format = HAL_PIXEL_FORMAT_BLOB;
662    }
663
664    return format;
665}
666
667static jint Image_getFormat(JNIEnv* env, jobject thiz) {
668    ALOGV("%s", __FUNCTION__);
669    GraphicBuffer* buffer;
670    Image_getNativeContext(env, thiz, &buffer, NULL);
671    if (buffer == NULL) {
672        jniThrowException(env, "java/lang/IllegalStateException",
673                "Image is not initialized");
674        return 0;
675    }
676
677    return Image_getPixelFormat(env, buffer->getPixelFormat());
678}
679
680static void Image_setFenceFd(JNIEnv* env, jobject thiz, int fenceFd) {
681    ALOGV("%s:", __FUNCTION__);
682    env->SetIntField(thiz, gSurfaceImageClassInfo.mNativeFenceFd, reinterpret_cast<jint>(fenceFd));
683}
684
685static void Image_getLockedImage(JNIEnv* env, jobject thiz, LockedImage *image) {
686    ALOGV("%s", __FUNCTION__);
687    GraphicBuffer* buffer;
688    int fenceFd = -1;
689    Image_getNativeContext(env, thiz, &buffer, &fenceFd);
690    if (buffer == NULL) {
691        jniThrowException(env, "java/lang/IllegalStateException",
692                "Image is not initialized");
693        return;
694    }
695
696    void* pData = NULL;
697    android_ycbcr ycbcr = android_ycbcr();
698    status_t res;
699    int format = Image_getFormat(env, thiz);
700    int flexFormat = format;
701    if (isPossiblyYUV(format)) {
702        // ImageWriter doesn't use crop by itself, app sets it, use the no crop version.
703        res = buffer->lockAsyncYCbCr(GRALLOC_USAGE_SW_WRITE_OFTEN, &ycbcr, fenceFd);
704        // Clear the fenceFd as it is already consumed by lock call.
705        Image_setFenceFd(env, thiz, /*fenceFd*/-1);
706        if (res != OK) {
707            jniThrowRuntimeException(env, "lockAsyncYCbCr failed for YUV buffer");
708            return;
709        }
710        pData = ycbcr.y;
711        flexFormat = HAL_PIXEL_FORMAT_YCbCr_420_888;
712    }
713
714    // lockAsyncYCbCr for YUV is unsuccessful.
715    if (pData == NULL) {
716        res = buffer->lockAsync(GRALLOC_USAGE_SW_WRITE_OFTEN, &pData, fenceFd);
717        if (res != OK) {
718            jniThrowRuntimeException(env, "lockAsync failed");
719            return;
720        }
721    }
722
723    image->data = reinterpret_cast<uint8_t*>(pData);
724    image->width = buffer->getWidth();
725    image->height = buffer->getHeight();
726    image->format = format;
727    image->flexFormat = flexFormat;
728    image->stride = (ycbcr.y != NULL) ? static_cast<uint32_t>(ycbcr.ystride) : buffer->getStride();
729
730    image->dataCb = reinterpret_cast<uint8_t*>(ycbcr.cb);
731    image->dataCr = reinterpret_cast<uint8_t*>(ycbcr.cr);
732    image->chromaStride = static_cast<uint32_t>(ycbcr.cstride);
733    image->chromaStep = static_cast<uint32_t>(ycbcr.chroma_step);
734    ALOGV("Successfully locked the image");
735    // crop, transform, scalingMode, timestamp, and frameNumber should be set by producer,
736    // and we don't set them here.
737}
738
739static bool usingRGBAToJpegOverride(int32_t bufferFormat, int32_t writerCtxFormat) {
740    return writerCtxFormat == HAL_PIXEL_FORMAT_BLOB && bufferFormat == HAL_PIXEL_FORMAT_RGBA_8888;
741}
742
743static int32_t applyFormatOverrides(int32_t bufferFormat, int32_t writerCtxFormat)
744{
745    // Using HAL_PIXEL_FORMAT_RGBA_8888 gralloc buffers containing JPEGs to get around SW
746    // write limitations for some platforms (b/17379185).
747    if (usingRGBAToJpegOverride(bufferFormat, writerCtxFormat)) {
748        return HAL_PIXEL_FORMAT_BLOB;
749    }
750    return bufferFormat;
751}
752
753static uint32_t Image_getJpegSize(LockedImage* buffer, bool usingRGBAOverride) {
754    ALOGV("%s", __FUNCTION__);
755    ALOG_ASSERT(buffer != NULL, "Input buffer is NULL!!!");
756    uint32_t size = 0;
757    uint32_t width = buffer->width;
758    uint8_t* jpegBuffer = buffer->data;
759
760    if (usingRGBAOverride) {
761        width = (buffer->width + buffer->stride * (buffer->height - 1)) * 4;
762    }
763
764    // First check for JPEG transport header at the end of the buffer
765    uint8_t* header = jpegBuffer + (width - sizeof(struct camera3_jpeg_blob));
766    struct camera3_jpeg_blob *blob = (struct camera3_jpeg_blob*)(header);
767    if (blob->jpeg_blob_id == CAMERA3_JPEG_BLOB_ID) {
768        size = blob->jpeg_size;
769        ALOGV("%s: Jpeg size = %d", __FUNCTION__, size);
770    }
771
772    // failed to find size, default to whole buffer
773    if (size == 0) {
774        /*
775         * This is a problem because not including the JPEG header
776         * means that in certain rare situations a regular JPEG blob
777         * will be misidentified as having a header, in which case
778         * we will get a garbage size value.
779         */
780        ALOGW("%s: No JPEG header detected, defaulting to size=width=%d",
781                __FUNCTION__, width);
782        size = width;
783    }
784
785    return size;
786}
787
788static void Image_getLockedImageInfo(JNIEnv* env, LockedImage* buffer, int idx,
789        int32_t writerFormat, uint8_t **base, uint32_t *size, int *pixelStride, int *rowStride) {
790    ALOGV("%s", __FUNCTION__);
791    ALOG_ASSERT(buffer != NULL, "Input buffer is NULL!!!");
792    ALOG_ASSERT(base != NULL, "base is NULL!!!");
793    ALOG_ASSERT(size != NULL, "size is NULL!!!");
794    ALOG_ASSERT(pixelStride != NULL, "pixelStride is NULL!!!");
795    ALOG_ASSERT(rowStride != NULL, "rowStride is NULL!!!");
796    ALOG_ASSERT((idx < IMAGE_WRITER_MAX_NUM_PLANES) && (idx >= 0));
797
798    ALOGV("%s: buffer: %p", __FUNCTION__, buffer);
799
800    uint32_t dataSize, ySize, cSize, cStride;
801    uint32_t pStride = 0, rStride = 0;
802    uint8_t *cb, *cr;
803    uint8_t *pData = NULL;
804    int bytesPerPixel = 0;
805
806    dataSize = ySize = cSize = cStride = 0;
807    int32_t fmt = buffer->flexFormat;
808
809    bool usingRGBAOverride = usingRGBAToJpegOverride(fmt, writerFormat);
810    fmt = applyFormatOverrides(fmt, writerFormat);
811    switch (fmt) {
812        case HAL_PIXEL_FORMAT_YCbCr_420_888:
813            pData =
814                (idx == 0) ?
815                    buffer->data :
816                (idx == 1) ?
817                    buffer->dataCb :
818                buffer->dataCr;
819            // only map until last pixel
820            if (idx == 0) {
821                pStride = 1;
822                rStride = buffer->stride;
823                dataSize = buffer->stride * (buffer->height - 1) + buffer->width;
824            } else {
825                pStride = buffer->chromaStep;
826                rStride = buffer->chromaStride;
827                dataSize = buffer->chromaStride * (buffer->height / 2 - 1) +
828                        buffer->chromaStep * (buffer->width / 2 - 1) + 1;
829            }
830            break;
831        // NV21
832        case HAL_PIXEL_FORMAT_YCrCb_420_SP:
833            cr = buffer->data + (buffer->stride * buffer->height);
834            cb = cr + 1;
835            // only map until last pixel
836            ySize = buffer->width * (buffer->height - 1) + buffer->width;
837            cSize = buffer->width * (buffer->height / 2 - 1) + buffer->width - 1;
838
839            pData =
840                (idx == 0) ?
841                    buffer->data :
842                (idx == 1) ?
843                    cb:
844                cr;
845
846            dataSize = (idx == 0) ? ySize : cSize;
847            pStride = (idx == 0) ? 1 : 2;
848            rStride = buffer->width;
849            break;
850        case HAL_PIXEL_FORMAT_YV12:
851            // Y and C stride need to be 16 pixel aligned.
852            LOG_ALWAYS_FATAL_IF(buffer->stride % 16,
853                                "Stride is not 16 pixel aligned %d", buffer->stride);
854
855            ySize = buffer->stride * buffer->height;
856            cStride = ALIGN(buffer->stride / 2, 16);
857            cr = buffer->data + ySize;
858            cSize = cStride * buffer->height / 2;
859            cb = cr + cSize;
860
861            pData =
862                (idx == 0) ?
863                    buffer->data :
864                (idx == 1) ?
865                    cb :
866                cr;
867            dataSize = (idx == 0) ? ySize : cSize;
868            pStride = 1;
869            rStride = (idx == 0) ? buffer->stride : ALIGN(buffer->stride / 2, 16);
870            break;
871        case HAL_PIXEL_FORMAT_Y8:
872            // Single plane, 8bpp.
873            ALOG_ASSERT(idx == 0, "Wrong index: %d", idx);
874
875            pData = buffer->data;
876            dataSize = buffer->stride * buffer->height;
877            pStride = 1;
878            rStride = buffer->stride;
879            break;
880        case HAL_PIXEL_FORMAT_Y16:
881            bytesPerPixel = 2;
882            // Single plane, 16bpp, strides are specified in pixels, not in bytes
883            ALOG_ASSERT(idx == 0, "Wrong index: %d", idx);
884
885            pData = buffer->data;
886            dataSize = buffer->stride * buffer->height * bytesPerPixel;
887            pStride = bytesPerPixel;
888            rStride = buffer->stride * 2;
889            break;
890        case HAL_PIXEL_FORMAT_BLOB:
891            // Used for JPEG data, height must be 1, width == size, single plane.
892            ALOG_ASSERT(idx == 0, "Wrong index: %d", idx);
893            ALOG_ASSERT(buffer->height == 1, "JPEG should has height value %d", buffer->height);
894
895            pData = buffer->data;
896            dataSize = Image_getJpegSize(buffer, usingRGBAOverride);
897            pStride = bytesPerPixel;
898            rowStride = 0;
899            break;
900        case HAL_PIXEL_FORMAT_RAW16:
901            // Single plane 16bpp bayer data.
902            bytesPerPixel = 2;
903            ALOG_ASSERT(idx == 0, "Wrong index: %d", idx);
904            pData = buffer->data;
905            dataSize = buffer->stride * buffer->height * bytesPerPixel;
906            pStride = bytesPerPixel;
907            rStride = buffer->stride * 2;
908            break;
909        case HAL_PIXEL_FORMAT_RAW10:
910            // Single plane 10bpp bayer data.
911            ALOG_ASSERT(idx == 0, "Wrong index: %d", idx);
912            LOG_ALWAYS_FATAL_IF(buffer->width % 4,
913                                "Width is not multiple of 4 %d", buffer->width);
914            LOG_ALWAYS_FATAL_IF(buffer->height % 2,
915                                "Height is not even %d", buffer->height);
916            LOG_ALWAYS_FATAL_IF(buffer->stride < (buffer->width * 10 / 8),
917                                "stride (%d) should be at least %d",
918                                buffer->stride, buffer->width * 10 / 8);
919            pData = buffer->data;
920            dataSize = buffer->stride * buffer->height;
921            pStride = 0;
922            rStride = buffer->stride;
923            break;
924        case HAL_PIXEL_FORMAT_RGBA_8888:
925        case HAL_PIXEL_FORMAT_RGBX_8888:
926            // Single plane, 32bpp.
927            bytesPerPixel = 4;
928            ALOG_ASSERT(idx == 0, "Wrong index: %d", idx);
929            pData = buffer->data;
930            dataSize = buffer->stride * buffer->height * bytesPerPixel;
931            pStride = bytesPerPixel;
932            rStride = buffer->stride * 4;
933            break;
934        case HAL_PIXEL_FORMAT_RGB_565:
935            // Single plane, 16bpp.
936            bytesPerPixel = 2;
937            ALOG_ASSERT(idx == 0, "Wrong index: %d", idx);
938            pData = buffer->data;
939            dataSize = buffer->stride * buffer->height * bytesPerPixel;
940            pStride = bytesPerPixel;
941            rStride = buffer->stride * 2;
942            break;
943        case HAL_PIXEL_FORMAT_RGB_888:
944            // Single plane, 24bpp.
945            bytesPerPixel = 3;
946            ALOG_ASSERT(idx == 0, "Wrong index: %d", idx);
947            pData = buffer->data;
948            dataSize = buffer->stride * buffer->height * bytesPerPixel;
949            pStride = bytesPerPixel;
950            rStride = buffer->stride * 3;
951            break;
952        default:
953            jniThrowExceptionFmt(env, "java/lang/UnsupportedOperationException",
954                                 "Pixel format: 0x%x is unsupported", fmt);
955            break;
956    }
957
958    *base = pData;
959    *size = dataSize;
960    *pixelStride = pStride;
961    *rowStride = rStride;
962}
963
964static jobjectArray Image_createSurfacePlanes(JNIEnv* env, jobject thiz,
965        int numPlanes, int writerFormat) {
966    ALOGV("%s: create SurfacePlane array with size %d", __FUNCTION__, numPlanes);
967    int rowStride, pixelStride;
968    uint8_t *pData;
969    uint32_t dataSize;
970    jobject byteBuffer;
971
972    int format = Image_getFormat(env, thiz);
973    if (isFormatOpaque(format) && numPlanes > 0) {
974        String8 msg;
975        msg.appendFormat("Format 0x%x is opaque, thus not writable, the number of planes (%d)"
976                " must be 0", format, numPlanes);
977        jniThrowException(env, "java/lang/IllegalArgumentException", msg.string());
978        return NULL;
979    }
980
981    jobjectArray surfacePlanes = env->NewObjectArray(numPlanes, gSurfacePlaneClassInfo.clazz,
982            /*initial_element*/NULL);
983    if (surfacePlanes == NULL) {
984        jniThrowRuntimeException(env, "Failed to create SurfacePlane arrays,"
985                " probably out of memory");
986        return NULL;
987    }
988    if (isFormatOpaque(format)) {
989        return surfacePlanes;
990    }
991
992    // Buildup buffer info: rowStride, pixelStride and byteBuffers.
993    LockedImage lockedImg = LockedImage();
994    Image_getLockedImage(env, thiz, &lockedImg);
995
996    // Create all SurfacePlanes
997    writerFormat = Image_getPixelFormat(env, writerFormat);
998    for (int i = 0; i < numPlanes; i++) {
999        Image_getLockedImageInfo(env, &lockedImg, i, writerFormat,
1000                &pData, &dataSize, &pixelStride, &rowStride);
1001        byteBuffer = env->NewDirectByteBuffer(pData, dataSize);
1002        if ((byteBuffer == NULL) && (env->ExceptionCheck() == false)) {
1003            jniThrowException(env, "java/lang/IllegalStateException",
1004                    "Failed to allocate ByteBuffer");
1005            return NULL;
1006        }
1007
1008        // Finally, create this SurfacePlane.
1009        jobject surfacePlane = env->NewObject(gSurfacePlaneClassInfo.clazz,
1010                    gSurfacePlaneClassInfo.ctor, thiz, rowStride, pixelStride, byteBuffer);
1011        env->SetObjectArrayElement(surfacePlanes, i, surfacePlane);
1012    }
1013
1014    return surfacePlanes;
1015}
1016
1017// -------------------------------Private convenience methods--------------------
1018
1019static bool isFormatOpaque(int format) {
1020    // Only treat IMPLEMENTATION_DEFINED as an opaque format for now.
1021    return format == HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED;
1022}
1023
1024static bool isPossiblyYUV(PixelFormat format) {
1025    switch (static_cast<int>(format)) {
1026        case HAL_PIXEL_FORMAT_RGBA_8888:
1027        case HAL_PIXEL_FORMAT_RGBX_8888:
1028        case HAL_PIXEL_FORMAT_RGB_888:
1029        case HAL_PIXEL_FORMAT_RGB_565:
1030        case HAL_PIXEL_FORMAT_BGRA_8888:
1031        case HAL_PIXEL_FORMAT_Y8:
1032        case HAL_PIXEL_FORMAT_Y16:
1033        case HAL_PIXEL_FORMAT_RAW16:
1034        case HAL_PIXEL_FORMAT_RAW10:
1035        case HAL_PIXEL_FORMAT_RAW_OPAQUE:
1036        case HAL_PIXEL_FORMAT_BLOB:
1037        case HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED:
1038            return false;
1039
1040        case HAL_PIXEL_FORMAT_YV12:
1041        case HAL_PIXEL_FORMAT_YCbCr_420_888:
1042        case HAL_PIXEL_FORMAT_YCbCr_422_SP:
1043        case HAL_PIXEL_FORMAT_YCrCb_420_SP:
1044        case HAL_PIXEL_FORMAT_YCbCr_422_I:
1045        default:
1046            return true;
1047    }
1048}
1049
1050} // extern "C"
1051
1052// ----------------------------------------------------------------------------
1053
1054static JNINativeMethod gImageWriterMethods[] = {
1055    {"nativeClassInit",         "()V",                        (void*)ImageWriter_classInit },
1056    {"nativeInit",              "(Ljava/lang/Object;Landroid/view/Surface;I)J",
1057                                                              (void*)ImageWriter_init },
1058    {"nativeClose",              "(J)V",                      (void*)ImageWriter_close },
1059    {"nativeAttachAndQueueImage", "(JJIJIIII)I",          (void*)ImageWriter_attachAndQueueImage },
1060    {"nativeDequeueInputImage", "(JLandroid/media/Image;)V",  (void*)ImageWriter_dequeueImage },
1061    {"nativeQueueInputImage",   "(JLandroid/media/Image;JIIII)V",  (void*)ImageWriter_queueImage },
1062    {"cancelImage",             "(JLandroid/media/Image;)V",   (void*)ImageWriter_cancelImage },
1063};
1064
1065static JNINativeMethod gImageMethods[] = {
1066    {"nativeCreatePlanes",      "(II)[Landroid/media/ImageWriter$WriterSurfaceImage$SurfacePlane;",
1067                                                              (void*)Image_createSurfacePlanes },
1068    {"nativeGetWidth",         "()I",                         (void*)Image_getWidth },
1069    {"nativeGetHeight",        "()I",                         (void*)Image_getHeight },
1070    {"nativeGetFormat",        "()I",                         (void*)Image_getFormat },
1071};
1072
1073int register_android_media_ImageWriter(JNIEnv *env) {
1074
1075    int ret1 = AndroidRuntime::registerNativeMethods(env,
1076                   "android/media/ImageWriter", gImageWriterMethods, NELEM(gImageWriterMethods));
1077
1078    int ret2 = AndroidRuntime::registerNativeMethods(env,
1079                   "android/media/ImageWriter$WriterSurfaceImage", gImageMethods, NELEM(gImageMethods));
1080
1081    return (ret1 || ret2);
1082}
1083
1084