android_media_ImageReader.cpp revision f6a09e510649ae4701bb5ad4c40d102d59a5608c 
1/*
2 * Copyright 2013 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 "ImageReader_JNI"
19#include <utils/Log.h>
20#include <utils/misc.h>
21#include <utils/List.h>
22#include <utils/String8.h>
23
24#include <cstdio>
25
26#include <gui/CpuConsumer.h>
27#include <gui/Surface.h>
28#include <camera3.h>
29
30#include <android_runtime/AndroidRuntime.h>
31#include <android_runtime/android_view_Surface.h>
32
33#include <jni.h>
34#include <JNIHelp.h>
35
36#include <stdint.h>
37#include <inttypes.h>
38
39#define ALIGN(x, mask) ( ((x) + (mask) - 1) & ~((mask) - 1) )
40
41#define ANDROID_MEDIA_IMAGEREADER_CTX_JNI_ID       "mNativeContext"
42#define ANDROID_MEDIA_SURFACEIMAGE_BUFFER_JNI_ID   "mLockedBuffer"
43#define ANDROID_MEDIA_SURFACEIMAGE_TS_JNI_ID       "mTimestamp"
44
45// ----------------------------------------------------------------------------
46
47using namespace android;
48
49enum {
50    IMAGE_READER_MAX_NUM_PLANES = 3,
51};
52
53enum {
54    ACQUIRE_SUCCESS = 0,
55    ACQUIRE_NO_BUFFERS = 1,
56    ACQUIRE_MAX_IMAGES = 2,
57};
58
59static struct {
60    jfieldID mNativeContext;
61    jmethodID postEventFromNative;
62} gImageReaderClassInfo;
63
64static struct {
65    jfieldID mLockedBuffer;
66    jfieldID mTimestamp;
67} gSurfaceImageClassInfo;
68
69static struct {
70    jclass clazz;
71    jmethodID ctor;
72} gSurfacePlaneClassInfo;
73
74// ----------------------------------------------------------------------------
75
76class JNIImageReaderContext : public CpuConsumer::FrameAvailableListener
77{
78public:
79    JNIImageReaderContext(JNIEnv* env, jobject weakThiz, jclass clazz, int maxImages);
80
81    virtual ~JNIImageReaderContext();
82
83    virtual void onFrameAvailable(const BufferItem& item);
84
85    CpuConsumer::LockedBuffer* getLockedBuffer();
86
87    void returnLockedBuffer(CpuConsumer::LockedBuffer* buffer);
88
89    void setCpuConsumer(const sp<CpuConsumer>& consumer) { mConsumer = consumer; }
90    CpuConsumer* getCpuConsumer() { return mConsumer.get(); }
91
92    void setProducer(const sp<IGraphicBufferProducer>& producer) { mProducer = producer; }
93    IGraphicBufferProducer* getProducer() { return mProducer.get(); }
94
95    void setBufferFormat(int format) { mFormat = format; }
96    int getBufferFormat() { return mFormat; }
97
98    void setBufferDataspace(android_dataspace dataSpace) { mDataSpace = dataSpace; }
99    android_dataspace getBufferDataspace() { return mDataSpace; }
100
101    void setBufferWidth(int width) { mWidth = width; }
102    int getBufferWidth() { return mWidth; }
103
104    void setBufferHeight(int height) { mHeight = height; }
105    int getBufferHeight() { return mHeight; }
106
107private:
108    static JNIEnv* getJNIEnv(bool* needsDetach);
109    static void detachJNI();
110
111    List<CpuConsumer::LockedBuffer*> mBuffers;
112    sp<CpuConsumer> mConsumer;
113    sp<IGraphicBufferProducer> mProducer;
114    jobject mWeakThiz;
115    jclass mClazz;
116    int mFormat;
117    android_dataspace mDataSpace;
118    int mWidth;
119    int mHeight;
120};
121
122JNIImageReaderContext::JNIImageReaderContext(JNIEnv* env,
123        jobject weakThiz, jclass clazz, int maxImages) :
124    mWeakThiz(env->NewGlobalRef(weakThiz)),
125    mClazz((jclass)env->NewGlobalRef(clazz)) {
126    for (int i = 0; i < maxImages; i++) {
127        CpuConsumer::LockedBuffer *buffer = new CpuConsumer::LockedBuffer;
128        mBuffers.push_back(buffer);
129    }
130}
131
132JNIEnv* JNIImageReaderContext::getJNIEnv(bool* needsDetach) {
133    LOG_ALWAYS_FATAL_IF(needsDetach == NULL, "needsDetach is null!!!");
134    *needsDetach = false;
135    JNIEnv* env = AndroidRuntime::getJNIEnv();
136    if (env == NULL) {
137        JavaVMAttachArgs args = {JNI_VERSION_1_4, NULL, NULL};
138        JavaVM* vm = AndroidRuntime::getJavaVM();
139        int result = vm->AttachCurrentThread(&env, (void*) &args);
140        if (result != JNI_OK) {
141            ALOGE("thread attach failed: %#x", result);
142            return NULL;
143        }
144        *needsDetach = true;
145    }
146    return env;
147}
148
149void JNIImageReaderContext::detachJNI() {
150    JavaVM* vm = AndroidRuntime::getJavaVM();
151    int result = vm->DetachCurrentThread();
152    if (result != JNI_OK) {
153        ALOGE("thread detach failed: %#x", result);
154    }
155}
156
157CpuConsumer::LockedBuffer* JNIImageReaderContext::getLockedBuffer() {
158    if (mBuffers.empty()) {
159        return NULL;
160    }
161    // Return a LockedBuffer pointer and remove it from the list
162    List<CpuConsumer::LockedBuffer*>::iterator it = mBuffers.begin();
163    CpuConsumer::LockedBuffer* buffer = *it;
164    mBuffers.erase(it);
165    return buffer;
166}
167
168void JNIImageReaderContext::returnLockedBuffer(CpuConsumer::LockedBuffer* buffer) {
169    mBuffers.push_back(buffer);
170}
171
172JNIImageReaderContext::~JNIImageReaderContext() {
173    bool needsDetach = false;
174    JNIEnv* env = getJNIEnv(&needsDetach);
175    if (env != NULL) {
176        env->DeleteGlobalRef(mWeakThiz);
177        env->DeleteGlobalRef(mClazz);
178    } else {
179        ALOGW("leaking JNI object references");
180    }
181    if (needsDetach) {
182        detachJNI();
183    }
184
185    // Delete LockedBuffers
186    for (List<CpuConsumer::LockedBuffer *>::iterator it = mBuffers.begin();
187            it != mBuffers.end(); it++) {
188        delete *it;
189    }
190    mBuffers.clear();
191    mConsumer.clear();
192}
193
194void JNIImageReaderContext::onFrameAvailable(const BufferItem& /*item*/)
195{
196    ALOGV("%s: frame available", __FUNCTION__);
197    bool needsDetach = false;
198    JNIEnv* env = getJNIEnv(&needsDetach);
199    if (env != NULL) {
200        env->CallStaticVoidMethod(mClazz, gImageReaderClassInfo.postEventFromNative, mWeakThiz);
201    } else {
202        ALOGW("onFrameAvailable event will not posted");
203    }
204    if (needsDetach) {
205        detachJNI();
206    }
207}
208
209// ----------------------------------------------------------------------------
210
211extern "C" {
212
213static JNIImageReaderContext* ImageReader_getContext(JNIEnv* env, jobject thiz)
214{
215    JNIImageReaderContext *ctx;
216    ctx = reinterpret_cast<JNIImageReaderContext *>
217              (env->GetLongField(thiz, gImageReaderClassInfo.mNativeContext));
218    return ctx;
219}
220
221static CpuConsumer* ImageReader_getCpuConsumer(JNIEnv* env, jobject thiz)
222{
223    ALOGV("%s:", __FUNCTION__);
224    JNIImageReaderContext* const ctx = ImageReader_getContext(env, thiz);
225    if (ctx == NULL) {
226        jniThrowRuntimeException(env, "ImageReaderContext is not initialized");
227        return NULL;
228    }
229    return ctx->getCpuConsumer();
230}
231
232static IGraphicBufferProducer* ImageReader_getProducer(JNIEnv* env, jobject thiz)
233{
234    ALOGV("%s:", __FUNCTION__);
235    JNIImageReaderContext* const ctx = ImageReader_getContext(env, thiz);
236    if (ctx == NULL) {
237        jniThrowRuntimeException(env, "ImageReaderContext is not initialized");
238        return NULL;
239    }
240    return ctx->getProducer();
241}
242
243static void ImageReader_setNativeContext(JNIEnv* env,
244        jobject thiz, sp<JNIImageReaderContext> ctx)
245{
246    ALOGV("%s:", __FUNCTION__);
247    JNIImageReaderContext* const p = ImageReader_getContext(env, thiz);
248    if (ctx != 0) {
249        ctx->incStrong((void*)ImageReader_setNativeContext);
250    }
251    if (p) {
252        p->decStrong((void*)ImageReader_setNativeContext);
253    }
254    env->SetLongField(thiz, gImageReaderClassInfo.mNativeContext,
255            reinterpret_cast<jlong>(ctx.get()));
256}
257
258static CpuConsumer::LockedBuffer* Image_getLockedBuffer(JNIEnv* env, jobject image)
259{
260    return reinterpret_cast<CpuConsumer::LockedBuffer*>(
261            env->GetLongField(image, gSurfaceImageClassInfo.mLockedBuffer));
262}
263
264static void Image_setBuffer(JNIEnv* env, jobject thiz,
265        const CpuConsumer::LockedBuffer* buffer)
266{
267    env->SetLongField(thiz, gSurfaceImageClassInfo.mLockedBuffer, reinterpret_cast<jlong>(buffer));
268}
269
270static uint32_t Image_getJpegSize(CpuConsumer::LockedBuffer* buffer, bool usingRGBAOverride)
271{
272    ALOG_ASSERT(buffer != NULL, "Input buffer is NULL!!!");
273    uint32_t size = 0;
274    uint32_t width = buffer->width;
275    uint8_t* jpegBuffer = buffer->data;
276
277    if (usingRGBAOverride) {
278        width = (buffer->width + buffer->stride * (buffer->height - 1)) * 4;
279    }
280
281    // First check for JPEG transport header at the end of the buffer
282    uint8_t* header = jpegBuffer + (width - sizeof(struct camera3_jpeg_blob));
283    struct camera3_jpeg_blob *blob = (struct camera3_jpeg_blob*)(header);
284    if (blob->jpeg_blob_id == CAMERA3_JPEG_BLOB_ID) {
285        size = blob->jpeg_size;
286        ALOGV("%s: Jpeg size = %d", __FUNCTION__, size);
287    }
288
289    // failed to find size, default to whole buffer
290    if (size == 0) {
291        /*
292         * This is a problem because not including the JPEG header
293         * means that in certain rare situations a regular JPEG blob
294         * will be misidentified as having a header, in which case
295         * we will get a garbage size value.
296         */
297        ALOGW("%s: No JPEG header detected, defaulting to size=width=%d",
298                __FUNCTION__, width);
299        size = width;
300    }
301
302    return size;
303}
304
305static bool usingRGBAToJpegOverride(int32_t bufferFormat, int32_t readerCtxFormat) {
306    return readerCtxFormat == HAL_PIXEL_FORMAT_BLOB && bufferFormat == HAL_PIXEL_FORMAT_RGBA_8888;
307}
308
309static int32_t applyFormatOverrides(int32_t bufferFormat, int32_t readerCtxFormat)
310{
311    // Using HAL_PIXEL_FORMAT_RGBA_8888 gralloc buffers containing JPEGs to get around SW
312    // write limitations for some platforms (b/17379185).
313    if (usingRGBAToJpegOverride(bufferFormat, readerCtxFormat)) {
314        return HAL_PIXEL_FORMAT_BLOB;
315    }
316    return bufferFormat;
317}
318
319static void Image_getLockedBufferInfo(JNIEnv* env, CpuConsumer::LockedBuffer* buffer, int idx,
320                                uint8_t **base, uint32_t *size, int32_t readerFormat)
321{
322    ALOG_ASSERT(buffer != NULL, "Input buffer is NULL!!!");
323    ALOG_ASSERT(base != NULL, "base is NULL!!!");
324    ALOG_ASSERT(size != NULL, "size is NULL!!!");
325    ALOG_ASSERT((idx < IMAGE_READER_MAX_NUM_PLANES) && (idx >= 0));
326
327    ALOGV("%s: buffer: %p", __FUNCTION__, buffer);
328
329    uint32_t dataSize, ySize, cSize, cStride;
330    uint8_t *cb, *cr;
331    uint8_t *pData = NULL;
332    int bytesPerPixel = 0;
333
334    dataSize = ySize = cSize = cStride = 0;
335    int32_t fmt = buffer->flexFormat;
336
337    bool usingRGBAOverride = usingRGBAToJpegOverride(fmt, readerFormat);
338    fmt = applyFormatOverrides(fmt, readerFormat);
339    switch (fmt) {
340        case HAL_PIXEL_FORMAT_YCbCr_420_888:
341            pData =
342                (idx == 0) ?
343                    buffer->data :
344                (idx == 1) ?
345                    buffer->dataCb :
346                buffer->dataCr;
347            // only map until last pixel
348            if (idx == 0) {
349                dataSize = buffer->stride * (buffer->height - 1) + buffer->width;
350            } else {
351                dataSize = buffer->chromaStride * (buffer->height / 2 - 1) +
352                        buffer->chromaStep * (buffer->width / 2 - 1) + 1;
353            }
354            break;
355        // NV21
356        case HAL_PIXEL_FORMAT_YCrCb_420_SP:
357            cr = buffer->data + (buffer->stride * buffer->height);
358            cb = cr + 1;
359            // only map until last pixel
360            ySize = buffer->width * (buffer->height - 1) + buffer->width;
361            cSize = buffer->width * (buffer->height / 2 - 1) + buffer->width - 1;
362
363            pData =
364                (idx == 0) ?
365                    buffer->data :
366                (idx == 1) ?
367                    cb:
368                cr;
369
370            dataSize = (idx == 0) ? ySize : cSize;
371            break;
372        case HAL_PIXEL_FORMAT_YV12:
373            // Y and C stride need to be 16 pixel aligned.
374            LOG_ALWAYS_FATAL_IF(buffer->stride % 16,
375                                "Stride is not 16 pixel aligned %d", buffer->stride);
376
377            ySize = buffer->stride * buffer->height;
378            cStride = ALIGN(buffer->stride / 2, 16);
379            cr = buffer->data + ySize;
380            cSize = cStride * buffer->height / 2;
381            cb = cr + cSize;
382
383            pData =
384                (idx == 0) ?
385                    buffer->data :
386                (idx == 1) ?
387                    cb :
388                cr;
389            dataSize = (idx == 0) ? ySize : cSize;
390            break;
391        case HAL_PIXEL_FORMAT_Y8:
392            // Single plane, 8bpp.
393            ALOG_ASSERT(idx == 0, "Wrong index: %d", idx);
394
395            pData = buffer->data;
396            dataSize = buffer->stride * buffer->height;
397            break;
398        case HAL_PIXEL_FORMAT_Y16:
399            bytesPerPixel = 2;
400            // Single plane, 16bpp, strides are specified in pixels, not in bytes
401            ALOG_ASSERT(idx == 0, "Wrong index: %d", idx);
402
403            pData = buffer->data;
404            dataSize = buffer->stride * buffer->height * bytesPerPixel;
405            break;
406        case HAL_PIXEL_FORMAT_BLOB:
407            // Used for JPEG data, height must be 1, width == size, single plane.
408            ALOG_ASSERT(idx == 0, "Wrong index: %d", idx);
409            ALOG_ASSERT(buffer->height == 1, "JPEG should has height value %d", buffer->height);
410
411            pData = buffer->data;
412            dataSize = Image_getJpegSize(buffer, usingRGBAOverride);
413            break;
414        case HAL_PIXEL_FORMAT_RAW16:
415            // Single plane 16bpp bayer data.
416            bytesPerPixel = 2;
417            ALOG_ASSERT(idx == 0, "Wrong index: %d", idx);
418            pData = buffer->data;
419            dataSize = buffer->stride * buffer->height * bytesPerPixel;
420            break;
421        case HAL_PIXEL_FORMAT_RAW10:
422            // Single plane 10bpp bayer data.
423            ALOG_ASSERT(idx == 0, "Wrong index: %d", idx);
424            LOG_ALWAYS_FATAL_IF(buffer->width % 4,
425                                "Width is not multiple of 4 %d", buffer->width);
426            LOG_ALWAYS_FATAL_IF(buffer->height % 2,
427                                "Height is not even %d", buffer->height);
428            LOG_ALWAYS_FATAL_IF(buffer->stride < (buffer->width * 10 / 8),
429                                "stride (%d) should be at least %d",
430                                buffer->stride, buffer->width * 10 / 8);
431            pData = buffer->data;
432            dataSize = buffer->stride * buffer->height;
433            break;
434        case HAL_PIXEL_FORMAT_RGBA_8888:
435        case HAL_PIXEL_FORMAT_RGBX_8888:
436            // Single plane, 32bpp.
437            bytesPerPixel = 4;
438            ALOG_ASSERT(idx == 0, "Wrong index: %d", idx);
439            pData = buffer->data;
440            dataSize = buffer->stride * buffer->height * bytesPerPixel;
441            break;
442        case HAL_PIXEL_FORMAT_RGB_565:
443            // Single plane, 16bpp.
444            bytesPerPixel = 2;
445            ALOG_ASSERT(idx == 0, "Wrong index: %d", idx);
446            pData = buffer->data;
447            dataSize = buffer->stride * buffer->height * bytesPerPixel;
448            break;
449        case HAL_PIXEL_FORMAT_RGB_888:
450            // Single plane, 24bpp.
451            bytesPerPixel = 3;
452            ALOG_ASSERT(idx == 0, "Wrong index: %d", idx);
453            pData = buffer->data;
454            dataSize = buffer->stride * buffer->height * bytesPerPixel;
455            break;
456        default:
457            jniThrowExceptionFmt(env, "java/lang/UnsupportedOperationException",
458                                 "Pixel format: 0x%x is unsupported", fmt);
459            break;
460    }
461
462    *base = pData;
463    *size = dataSize;
464}
465
466static jint Image_imageGetPixelStride(JNIEnv* env, CpuConsumer::LockedBuffer* buffer, int idx,
467        int32_t halReaderFormat)
468{
469    ALOGV("%s: buffer index: %d", __FUNCTION__, idx);
470    ALOG_ASSERT((idx < IMAGE_READER_MAX_NUM_PLANES) && (idx >= 0), "Index is out of range:%d", idx);
471
472    int pixelStride = 0;
473    ALOG_ASSERT(buffer != NULL, "buffer is NULL");
474
475    int32_t fmt = buffer->flexFormat;
476
477    fmt = applyFormatOverrides(fmt, halReaderFormat);
478
479    switch (fmt) {
480        case HAL_PIXEL_FORMAT_YCbCr_420_888:
481            pixelStride = (idx == 0) ? 1 : buffer->chromaStep;
482            break;
483        case HAL_PIXEL_FORMAT_YCrCb_420_SP:
484            pixelStride = (idx == 0) ? 1 : 2;
485            break;
486        case HAL_PIXEL_FORMAT_Y8:
487            // Single plane 8bpp data.
488            ALOG_ASSERT(idx == 0, "Wrong index: %d", idx);
489            break;
490        case HAL_PIXEL_FORMAT_YV12:
491            pixelStride = 1;
492            break;
493        case HAL_PIXEL_FORMAT_BLOB:
494        case HAL_PIXEL_FORMAT_RAW10:
495            // Blob is used for JPEG data, RAW10 is used for 10-bit raw data, they are
496            // single plane, row and pixel strides are 0.
497            ALOG_ASSERT(idx == 0, "Wrong index: %d", idx);
498            pixelStride = 0;
499            break;
500        case HAL_PIXEL_FORMAT_Y16:
501        case HAL_PIXEL_FORMAT_RAW16:
502        case HAL_PIXEL_FORMAT_RGB_565:
503            // Single plane 16bpp data.
504            ALOG_ASSERT(idx == 0, "Wrong index: %d", idx);
505            pixelStride = 2;
506            break;
507        case HAL_PIXEL_FORMAT_RGBA_8888:
508        case HAL_PIXEL_FORMAT_RGBX_8888:
509            ALOG_ASSERT(idx == 0, "Wrong index: %d", idx);
510            pixelStride = 4;
511            break;
512        case HAL_PIXEL_FORMAT_RGB_888:
513            // Single plane, 24bpp.
514            ALOG_ASSERT(idx == 0, "Wrong index: %d", idx);
515            pixelStride = 3;
516            break;
517        default:
518            jniThrowExceptionFmt(env, "java/lang/UnsupportedOperationException",
519                                 "Pixel format: 0x%x is unsupported", fmt);
520            break;
521    }
522
523    return pixelStride;
524}
525
526static jint Image_imageGetRowStride(JNIEnv* env, CpuConsumer::LockedBuffer* buffer, int idx,
527        int32_t halReaderFormat)
528{
529    ALOGV("%s: buffer index: %d", __FUNCTION__, idx);
530    ALOG_ASSERT((idx < IMAGE_READER_MAX_NUM_PLANES) && (idx >= 0));
531
532    int rowStride = 0;
533    ALOG_ASSERT(buffer != NULL, "buffer is NULL");
534
535    int32_t fmt = buffer->flexFormat;
536
537    fmt = applyFormatOverrides(fmt, halReaderFormat);
538
539    switch (fmt) {
540        case HAL_PIXEL_FORMAT_YCbCr_420_888:
541            rowStride = (idx == 0) ? buffer->stride : buffer->chromaStride;
542            break;
543        case HAL_PIXEL_FORMAT_YCrCb_420_SP:
544            rowStride = buffer->width;
545            break;
546        case HAL_PIXEL_FORMAT_YV12:
547            LOG_ALWAYS_FATAL_IF(buffer->stride % 16,
548                                "Stride is not 16 pixel aligned %d", buffer->stride);
549            rowStride = (idx == 0) ? buffer->stride : ALIGN(buffer->stride / 2, 16);
550            break;
551        case HAL_PIXEL_FORMAT_BLOB:
552            // Blob is used for JPEG data, RAW10 is used for 10-bit raw data, they are
553            // single plane, row and pixel strides are 0.
554            ALOG_ASSERT(idx == 0, "Wrong index: %d", idx);
555            rowStride = 0;
556            break;
557        case HAL_PIXEL_FORMAT_RAW10:
558            ALOG_ASSERT(idx == 0, "Wrong index: %d", idx);
559            rowStride = buffer->stride;
560            break;
561        case HAL_PIXEL_FORMAT_Y8:
562            ALOG_ASSERT(idx == 0, "Wrong index: %d", idx);
563            LOG_ALWAYS_FATAL_IF(buffer->stride % 16,
564                                "Stride is not 16 pixel aligned %d", buffer->stride);
565            rowStride = buffer->stride;
566            break;
567        case HAL_PIXEL_FORMAT_Y16:
568        case HAL_PIXEL_FORMAT_RAW16:
569            // In native side, strides are specified in pixels, not in bytes.
570            // Single plane 16bpp bayer data. even width/height,
571            // row stride multiple of 16 pixels (32 bytes)
572            ALOG_ASSERT(idx == 0, "Wrong index: %d", idx);
573            LOG_ALWAYS_FATAL_IF(buffer->stride % 16,
574                                "Stride is not 16 pixel aligned %d", buffer->stride);
575            rowStride = buffer->stride * 2;
576            break;
577        case HAL_PIXEL_FORMAT_RGB_565:
578            ALOG_ASSERT(idx == 0, "Wrong index: %d", idx);
579            rowStride = buffer->stride * 2;
580            break;
581        case HAL_PIXEL_FORMAT_RGBA_8888:
582        case HAL_PIXEL_FORMAT_RGBX_8888:
583            ALOG_ASSERT(idx == 0, "Wrong index: %d", idx);
584            rowStride = buffer->stride * 4;
585            break;
586        case HAL_PIXEL_FORMAT_RGB_888:
587            // Single plane, 24bpp.
588            ALOG_ASSERT(idx == 0, "Wrong index: %d", idx);
589            rowStride = buffer->stride * 3;
590            break;
591        default:
592            ALOGE("%s Pixel format: 0x%x is unsupported", __FUNCTION__, fmt);
593            jniThrowException(env, "java/lang/UnsupportedOperationException",
594                              "unsupported buffer format");
595          break;
596    }
597
598    return rowStride;
599}
600
601static int Image_getBufferWidth(CpuConsumer::LockedBuffer* buffer) {
602    if (buffer == NULL) return -1;
603
604    if (!buffer->crop.isEmpty()) {
605        return buffer->crop.getWidth();
606    }
607    return buffer->width;
608}
609
610static int Image_getBufferHeight(CpuConsumer::LockedBuffer* buffer) {
611    if (buffer == NULL) return -1;
612
613    if (!buffer->crop.isEmpty()) {
614        return buffer->crop.getHeight();
615    }
616    return buffer->height;
617}
618
619// ----------------------------------------------------------------------------
620
621static void ImageReader_classInit(JNIEnv* env, jclass clazz)
622{
623    ALOGV("%s:", __FUNCTION__);
624
625    jclass imageClazz = env->FindClass("android/media/ImageReader$SurfaceImage");
626    LOG_ALWAYS_FATAL_IF(imageClazz == NULL,
627                        "can't find android/graphics/ImageReader$SurfaceImage");
628    gSurfaceImageClassInfo.mLockedBuffer = env->GetFieldID(
629            imageClazz, ANDROID_MEDIA_SURFACEIMAGE_BUFFER_JNI_ID, "J");
630    LOG_ALWAYS_FATAL_IF(gSurfaceImageClassInfo.mLockedBuffer == NULL,
631                        "can't find android/graphics/ImageReader.%s",
632                        ANDROID_MEDIA_SURFACEIMAGE_BUFFER_JNI_ID);
633
634    gSurfaceImageClassInfo.mTimestamp = env->GetFieldID(
635            imageClazz, ANDROID_MEDIA_SURFACEIMAGE_TS_JNI_ID, "J");
636    LOG_ALWAYS_FATAL_IF(gSurfaceImageClassInfo.mTimestamp == NULL,
637                        "can't find android/graphics/ImageReader.%s",
638                        ANDROID_MEDIA_SURFACEIMAGE_TS_JNI_ID);
639
640    gImageReaderClassInfo.mNativeContext = env->GetFieldID(
641            clazz, ANDROID_MEDIA_IMAGEREADER_CTX_JNI_ID, "J");
642    LOG_ALWAYS_FATAL_IF(gImageReaderClassInfo.mNativeContext == NULL,
643                        "can't find android/graphics/ImageReader.%s",
644                          ANDROID_MEDIA_IMAGEREADER_CTX_JNI_ID);
645
646    gImageReaderClassInfo.postEventFromNative = env->GetStaticMethodID(
647            clazz, "postEventFromNative", "(Ljava/lang/Object;)V");
648    LOG_ALWAYS_FATAL_IF(gImageReaderClassInfo.postEventFromNative == NULL,
649                        "can't find android/graphics/ImageReader.postEventFromNative");
650
651    jclass planeClazz = env->FindClass("android/media/ImageReader$SurfaceImage$SurfacePlane");
652    LOG_ALWAYS_FATAL_IF(planeClazz == NULL, "Can not find SurfacePlane class");
653    // FindClass only gives a local reference of jclass object.
654    gSurfacePlaneClassInfo.clazz = (jclass) env->NewGlobalRef(planeClazz);
655    gSurfacePlaneClassInfo.ctor = env->GetMethodID(gSurfacePlaneClassInfo.clazz, "<init>",
656            "(Landroid/media/ImageReader$SurfaceImage;III)V");
657    LOG_ALWAYS_FATAL_IF(gSurfacePlaneClassInfo.ctor == NULL,
658            "Can not find SurfacePlane constructor");
659}
660
661static void ImageReader_init(JNIEnv* env, jobject thiz, jobject weakThiz,
662                             jint width, jint height, jint format, jint maxImages)
663{
664    status_t res;
665    int nativeFormat;
666    android_dataspace nativeDataspace;
667
668    ALOGV("%s: width:%d, height: %d, format: 0x%x, maxImages:%d",
669          __FUNCTION__, width, height, format, maxImages);
670
671    PublicFormat publicFormat = static_cast<PublicFormat>(format);
672    nativeFormat = android_view_Surface_mapPublicFormatToHalFormat(
673        publicFormat);
674    nativeDataspace = android_view_Surface_mapPublicFormatToHalDataspace(
675        publicFormat);
676
677    sp<IGraphicBufferProducer> gbProducer;
678    sp<IGraphicBufferConsumer> gbConsumer;
679    BufferQueue::createBufferQueue(&gbProducer, &gbConsumer);
680    sp<CpuConsumer> consumer = new CpuConsumer(gbConsumer, maxImages,
681                                               /*controlledByApp*/true);
682    // TODO: throw dvm exOutOfMemoryError?
683    if (consumer == NULL) {
684        jniThrowRuntimeException(env, "Failed to allocate native CpuConsumer");
685        return;
686    }
687
688    jclass clazz = env->GetObjectClass(thiz);
689    if (clazz == NULL) {
690        jniThrowRuntimeException(env, "Can't find android/graphics/ImageReader");
691        return;
692    }
693    sp<JNIImageReaderContext> ctx(new JNIImageReaderContext(env, weakThiz, clazz, maxImages));
694    ctx->setCpuConsumer(consumer);
695    ctx->setProducer(gbProducer);
696    consumer->setFrameAvailableListener(ctx);
697    ImageReader_setNativeContext(env, thiz, ctx);
698    ctx->setBufferFormat(nativeFormat);
699    ctx->setBufferDataspace(nativeDataspace);
700    ctx->setBufferWidth(width);
701    ctx->setBufferHeight(height);
702
703    // Set the width/height/format/dataspace to the CpuConsumer
704    res = consumer->setDefaultBufferSize(width, height);
705    if (res != OK) {
706        jniThrowException(env, "java/lang/IllegalStateException",
707                          "Failed to set CpuConsumer buffer size");
708        return;
709    }
710    res = consumer->setDefaultBufferFormat(nativeFormat);
711    if (res != OK) {
712        jniThrowException(env, "java/lang/IllegalStateException",
713                          "Failed to set CpuConsumer buffer format");
714    }
715    res = consumer->setDefaultBufferDataSpace(nativeDataspace);
716    if (res != OK) {
717        jniThrowException(env, "java/lang/IllegalStateException",
718                          "Failed to set CpuConsumer buffer dataSpace");
719    }
720
721}
722
723static void ImageReader_close(JNIEnv* env, jobject thiz)
724{
725    ALOGV("%s:", __FUNCTION__);
726
727    JNIImageReaderContext* const ctx = ImageReader_getContext(env, thiz);
728    if (ctx == NULL) {
729        // ImageReader is already closed.
730        return;
731    }
732
733    CpuConsumer* consumer = ImageReader_getCpuConsumer(env, thiz);
734    if (consumer != NULL) {
735        consumer->abandon();
736        consumer->setFrameAvailableListener(NULL);
737    }
738    ImageReader_setNativeContext(env, thiz, NULL);
739}
740
741static void ImageReader_imageRelease(JNIEnv* env, jobject thiz, jobject image)
742{
743    ALOGV("%s:", __FUNCTION__);
744    JNIImageReaderContext* ctx = ImageReader_getContext(env, thiz);
745    if (ctx == NULL) {
746        ALOGW("ImageReader#close called before Image#close, consider calling Image#close first");
747        return;
748    }
749
750    CpuConsumer* consumer = ctx->getCpuConsumer();
751    CpuConsumer::LockedBuffer* buffer = Image_getLockedBuffer(env, image);
752    if (!buffer) {
753        ALOGW("Image already released!!!");
754        return;
755    }
756    consumer->unlockBuffer(*buffer);
757    Image_setBuffer(env, image, NULL);
758    ctx->returnLockedBuffer(buffer);
759}
760
761static jint ImageReader_imageSetup(JNIEnv* env, jobject thiz,
762                                             jobject image)
763{
764    ALOGV("%s:", __FUNCTION__);
765    JNIImageReaderContext* ctx = ImageReader_getContext(env, thiz);
766    if (ctx == NULL) {
767        jniThrowRuntimeException(env, "ImageReaderContext is not initialized");
768        return -1;
769    }
770
771    CpuConsumer* consumer = ctx->getCpuConsumer();
772    CpuConsumer::LockedBuffer* buffer = ctx->getLockedBuffer();
773    if (buffer == NULL) {
774        ALOGW("Unable to acquire a lockedBuffer, very likely client tries to lock more than"
775            " maxImages buffers");
776        return ACQUIRE_MAX_IMAGES;
777    }
778    status_t res = consumer->lockNextBuffer(buffer);
779    if (res != NO_ERROR) {
780        ctx->returnLockedBuffer(buffer);
781        if (res != BAD_VALUE /*no buffers*/) {
782            if (res == NOT_ENOUGH_DATA) {
783                return ACQUIRE_MAX_IMAGES;
784            } else {
785                ALOGE("%s Fail to lockNextBuffer with error: %d ",
786                      __FUNCTION__, res);
787                jniThrowExceptionFmt(env, "java/lang/AssertionError",
788                          "Unknown error (%d) when we tried to lock buffer.",
789                          res);
790            }
791        }
792        return ACQUIRE_NO_BUFFERS;
793    }
794
795    if (buffer->flexFormat == HAL_PIXEL_FORMAT_YCrCb_420_SP) {
796        jniThrowException(env, "java/lang/UnsupportedOperationException",
797                "NV21 format is not supported by ImageReader");
798        return -1;
799    }
800
801    // Check if the left-top corner of the crop rect is origin, we currently assume this point is
802    // zero, will revist this once this assumption turns out problematic.
803    Point lt = buffer->crop.leftTop();
804    if (lt.x != 0 || lt.y != 0) {
805        jniThrowExceptionFmt(env, "java/lang/UnsupportedOperationException",
806                "crop left top corner [%d, %d] need to be at origin", lt.x, lt.y);
807        return -1;
808    }
809
810    // Check if the producer buffer configurations match what ImageReader configured.
811    int outputWidth = Image_getBufferWidth(buffer);
812    int outputHeight = Image_getBufferHeight(buffer);
813
814    int imgReaderFmt = ctx->getBufferFormat();
815    int imageReaderWidth = ctx->getBufferWidth();
816    int imageReaderHeight = ctx->getBufferHeight();
817    if ((buffer->format != HAL_PIXEL_FORMAT_BLOB) && (imgReaderFmt != HAL_PIXEL_FORMAT_BLOB) &&
818            (imageReaderWidth != outputWidth || imageReaderHeight != outputHeight)) {
819        ALOGV("%s: Producer buffer size: %dx%d, doesn't match ImageReader configured size: %dx%d",
820                __FUNCTION__, outputWidth, outputHeight, imageReaderWidth, imageReaderHeight);
821    }
822
823    int bufFmt = buffer->format;
824    if (imgReaderFmt == HAL_PIXEL_FORMAT_YCbCr_420_888) {
825        bufFmt = buffer->flexFormat;
826    }
827    if (imgReaderFmt != bufFmt) {
828        if (imgReaderFmt == HAL_PIXEL_FORMAT_YCbCr_420_888 && (bufFmt ==
829                HAL_PIXEL_FORMAT_YCrCb_420_SP || bufFmt == HAL_PIXEL_FORMAT_YV12)) {
830            // Special casing for when producer switches to a format compatible with flexible YUV
831            // (HAL_PIXEL_FORMAT_YCbCr_420_888).
832            ctx->setBufferFormat(bufFmt);
833            ALOGD("%s: Overriding buffer format YUV_420_888 to %x.", __FUNCTION__, bufFmt);
834        } else if (imgReaderFmt == HAL_PIXEL_FORMAT_BLOB && bufFmt == HAL_PIXEL_FORMAT_RGBA_8888) {
835            // Using HAL_PIXEL_FORMAT_RGBA_8888 gralloc buffers containing JPEGs to get around SW
836            // write limitations for (b/17379185).
837            ALOGD("%s: Receiving JPEG in HAL_PIXEL_FORMAT_RGBA_8888 buffer.", __FUNCTION__);
838        } else {
839            // Return the buffer to the queue.
840            consumer->unlockBuffer(*buffer);
841            ctx->returnLockedBuffer(buffer);
842
843            // Throw exception
844            ALOGE("Producer output buffer format: 0x%x, ImageReader configured format: 0x%x",
845                    buffer->format, ctx->getBufferFormat());
846            String8 msg;
847            msg.appendFormat("The producer output buffer format 0x%x doesn't "
848                    "match the ImageReader's configured buffer format 0x%x.",
849                    bufFmt, ctx->getBufferFormat());
850            jniThrowException(env, "java/lang/UnsupportedOperationException",
851                    msg.string());
852            return -1;
853        }
854    }
855    // Set SurfaceImage instance member variables
856    Image_setBuffer(env, image, buffer);
857    env->SetLongField(image, gSurfaceImageClassInfo.mTimestamp,
858            static_cast<jlong>(buffer->timestamp));
859
860    return ACQUIRE_SUCCESS;
861}
862
863static void ImageReader_detachImage(JNIEnv* env, jobject thiz, jobject image) {
864    ALOGV("%s:", __FUNCTION__);
865    JNIImageReaderContext* ctx = ImageReader_getContext(env, thiz);
866    if (ctx == NULL) {
867        jniThrowException(env, "java/lang/IllegalStateException", "ImageReader was already closed");
868        return;
869    }
870
871    // CpuConsumer* consumer = ctx->getCpuConsumer();
872    CpuConsumer::LockedBuffer* buffer = Image_getLockedBuffer(env, image);
873    if (!buffer) {
874        ALOGW("Image already released!!!");
875        return;
876    }
877
878    // TODO: need implement
879    jniThrowRuntimeException(env, "nativeDetachImage is not implemented yet!!!");
880}
881
882static jobject ImageReader_getSurface(JNIEnv* env, jobject thiz)
883{
884    ALOGV("%s: ", __FUNCTION__);
885
886    IGraphicBufferProducer* gbp = ImageReader_getProducer(env, thiz);
887    if (gbp == NULL) {
888        jniThrowRuntimeException(env, "CpuConsumer is uninitialized");
889        return NULL;
890    }
891
892    // Wrap the IGBP in a Java-language Surface.
893    return android_view_Surface_createFromIGraphicBufferProducer(env, gbp);
894}
895
896static jobject Image_createSurfacePlane(JNIEnv* env, jobject thiz, int idx, int readerFormat)
897{
898    int rowStride, pixelStride;
899    PublicFormat publicReaderFormat = static_cast<PublicFormat>(readerFormat);
900
901    ALOGV("%s: buffer index: %d", __FUNCTION__, idx);
902
903    CpuConsumer::LockedBuffer* buffer = Image_getLockedBuffer(env, thiz);
904
905    ALOG_ASSERT(buffer != NULL);
906    if (buffer == NULL) {
907        jniThrowException(env, "java/lang/IllegalStateException", "Image was released");
908    }
909
910    int halReaderFormat = android_view_Surface_mapPublicFormatToHalFormat(
911        publicReaderFormat);
912
913    rowStride = Image_imageGetRowStride(env, buffer, idx, halReaderFormat);
914    pixelStride = Image_imageGetPixelStride(env, buffer, idx, halReaderFormat);
915
916    jobject surfPlaneObj = env->NewObject(gSurfacePlaneClassInfo.clazz,
917            gSurfacePlaneClassInfo.ctor, thiz, idx, rowStride, pixelStride);
918
919    return surfPlaneObj;
920}
921
922static jobject Image_getByteBuffer(JNIEnv* env, jobject thiz, int idx, int readerFormat)
923{
924    uint8_t *base = NULL;
925    uint32_t size = 0;
926    jobject byteBuffer;
927    PublicFormat readerPublicFormat = static_cast<PublicFormat>(readerFormat);
928
929    ALOGV("%s: buffer index: %d", __FUNCTION__, idx);
930
931    CpuConsumer::LockedBuffer* buffer = Image_getLockedBuffer(env, thiz);
932
933    if (buffer == NULL) {
934        jniThrowException(env, "java/lang/IllegalStateException", "Image was released");
935    }
936
937    int readerHalFormat = android_view_Surface_mapPublicFormatToHalFormat(
938            readerPublicFormat);
939
940    // Create byteBuffer from native buffer
941    Image_getLockedBufferInfo(env, buffer, idx, &base, &size, readerHalFormat);
942
943    if (size > static_cast<uint32_t>(INT32_MAX)) {
944        // Byte buffer have 'int capacity', so check the range
945        jniThrowExceptionFmt(env, "java/lang/IllegalStateException",
946                "Size too large for bytebuffer capacity %" PRIu32, size);
947        return NULL;
948    }
949
950    byteBuffer = env->NewDirectByteBuffer(base, size);
951    // TODO: throw dvm exOutOfMemoryError?
952    if ((byteBuffer == NULL) && (env->ExceptionCheck() == false)) {
953        jniThrowException(env, "java/lang/IllegalStateException", "Failed to allocate ByteBuffer");
954    }
955
956    return byteBuffer;
957}
958
959static jint Image_getWidth(JNIEnv* env, jobject thiz)
960{
961    CpuConsumer::LockedBuffer* buffer = Image_getLockedBuffer(env, thiz);
962    return Image_getBufferWidth(buffer);
963}
964
965static jint Image_getHeight(JNIEnv* env, jobject thiz)
966{
967    CpuConsumer::LockedBuffer* buffer = Image_getLockedBuffer(env, thiz);
968    return Image_getBufferHeight(buffer);
969}
970
971
972} // extern "C"
973
974// ----------------------------------------------------------------------------
975
976static JNINativeMethod gImageReaderMethods[] = {
977    {"nativeClassInit",        "()V",                        (void*)ImageReader_classInit },
978    {"nativeInit",             "(Ljava/lang/Object;IIII)V",  (void*)ImageReader_init },
979    {"nativeClose",            "()V",                        (void*)ImageReader_close },
980    {"nativeReleaseImage",     "(Landroid/media/Image;)V",   (void*)ImageReader_imageRelease },
981    {"nativeImageSetup",       "(Landroid/media/Image;)I",   (void*)ImageReader_imageSetup },
982    {"nativeGetSurface",       "()Landroid/view/Surface;",   (void*)ImageReader_getSurface },
983    {"nativeDetachImage",      "(Landroid/media/Image;)V",   (void*)ImageReader_detachImage },
984};
985
986static JNINativeMethod gImageMethods[] = {
987    {"nativeImageGetBuffer",   "(II)Ljava/nio/ByteBuffer;",   (void*)Image_getByteBuffer },
988    {"nativeCreatePlane",      "(II)Landroid/media/ImageReader$SurfaceImage$SurfacePlane;",
989                                                              (void*)Image_createSurfacePlane },
990    {"nativeGetWidth",         "()I",                         (void*)Image_getWidth },
991    {"nativeGetHeight",        "()I",                         (void*)Image_getHeight },
992};
993
994int register_android_media_ImageReader(JNIEnv *env) {
995
996    int ret1 = AndroidRuntime::registerNativeMethods(env,
997                   "android/media/ImageReader", gImageReaderMethods, NELEM(gImageReaderMethods));
998
999    int ret2 = AndroidRuntime::registerNativeMethods(env,
1000                   "android/media/ImageReader$SurfaceImage", gImageMethods, NELEM(gImageMethods));
1001
1002    return (ret1 || ret2);
1003}
1004