android_media_ImageReader.cpp revision 5096defdaa4716ce81047a855d6e5ce3f8263600
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(); 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 setBufferWidth(int width) { mWidth = width; } 99 int getBufferWidth() { return mWidth; } 100 101 void setBufferHeight(int height) { mHeight = height; } 102 int getBufferHeight() { return mHeight; } 103 104private: 105 static JNIEnv* getJNIEnv(bool* needsDetach); 106 static void detachJNI(); 107 108 List<CpuConsumer::LockedBuffer*> mBuffers; 109 sp<CpuConsumer> mConsumer; 110 sp<IGraphicBufferProducer> mProducer; 111 jobject mWeakThiz; 112 jclass mClazz; 113 int mFormat; 114 int mWidth; 115 int mHeight; 116}; 117 118JNIImageReaderContext::JNIImageReaderContext(JNIEnv* env, 119 jobject weakThiz, jclass clazz, int maxImages) : 120 mWeakThiz(env->NewGlobalRef(weakThiz)), 121 mClazz((jclass)env->NewGlobalRef(clazz)) { 122 for (int i = 0; i < maxImages; i++) { 123 CpuConsumer::LockedBuffer *buffer = new CpuConsumer::LockedBuffer; 124 mBuffers.push_back(buffer); 125 } 126} 127 128JNIEnv* JNIImageReaderContext::getJNIEnv(bool* needsDetach) { 129 LOG_ALWAYS_FATAL_IF(needsDetach == NULL, "needsDetach is null!!!"); 130 *needsDetach = false; 131 JNIEnv* env = AndroidRuntime::getJNIEnv(); 132 if (env == NULL) { 133 JavaVMAttachArgs args = {JNI_VERSION_1_4, NULL, NULL}; 134 JavaVM* vm = AndroidRuntime::getJavaVM(); 135 int result = vm->AttachCurrentThread(&env, (void*) &args); 136 if (result != JNI_OK) { 137 ALOGE("thread attach failed: %#x", result); 138 return NULL; 139 } 140 *needsDetach = true; 141 } 142 return env; 143} 144 145void JNIImageReaderContext::detachJNI() { 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 153CpuConsumer::LockedBuffer* JNIImageReaderContext::getLockedBuffer() { 154 if (mBuffers.empty()) { 155 return NULL; 156 } 157 // Return a LockedBuffer pointer and remove it from the list 158 List<CpuConsumer::LockedBuffer*>::iterator it = mBuffers.begin(); 159 CpuConsumer::LockedBuffer* buffer = *it; 160 mBuffers.erase(it); 161 return buffer; 162} 163 164void JNIImageReaderContext::returnLockedBuffer(CpuConsumer::LockedBuffer* buffer) { 165 mBuffers.push_back(buffer); 166} 167 168JNIImageReaderContext::~JNIImageReaderContext() { 169 bool needsDetach = false; 170 JNIEnv* env = getJNIEnv(&needsDetach); 171 if (env != NULL) { 172 env->DeleteGlobalRef(mWeakThiz); 173 env->DeleteGlobalRef(mClazz); 174 } else { 175 ALOGW("leaking JNI object references"); 176 } 177 if (needsDetach) { 178 detachJNI(); 179 } 180 181 // Delete LockedBuffers 182 for (List<CpuConsumer::LockedBuffer *>::iterator it = mBuffers.begin(); 183 it != mBuffers.end(); it++) { 184 delete *it; 185 } 186 mBuffers.clear(); 187 mConsumer.clear(); 188} 189 190void JNIImageReaderContext::onFrameAvailable() 191{ 192 ALOGV("%s: frame available", __FUNCTION__); 193 bool needsDetach = false; 194 JNIEnv* env = getJNIEnv(&needsDetach); 195 if (env != NULL) { 196 env->CallStaticVoidMethod(mClazz, gImageReaderClassInfo.postEventFromNative, mWeakThiz); 197 } else { 198 ALOGW("onFrameAvailable event will not posted"); 199 } 200 if (needsDetach) { 201 detachJNI(); 202 } 203} 204 205// ---------------------------------------------------------------------------- 206 207extern "C" { 208 209static JNIImageReaderContext* ImageReader_getContext(JNIEnv* env, jobject thiz) 210{ 211 JNIImageReaderContext *ctx; 212 ctx = reinterpret_cast<JNIImageReaderContext *> 213 (env->GetLongField(thiz, gImageReaderClassInfo.mNativeContext)); 214 return ctx; 215} 216 217static CpuConsumer* ImageReader_getCpuConsumer(JNIEnv* env, jobject thiz) 218{ 219 ALOGV("%s:", __FUNCTION__); 220 JNIImageReaderContext* const ctx = ImageReader_getContext(env, thiz); 221 if (ctx == NULL) { 222 jniThrowRuntimeException(env, "ImageReaderContext is not initialized"); 223 return NULL; 224 } 225 return ctx->getCpuConsumer(); 226} 227 228static IGraphicBufferProducer* ImageReader_getProducer(JNIEnv* env, jobject thiz) 229{ 230 ALOGV("%s:", __FUNCTION__); 231 JNIImageReaderContext* const ctx = ImageReader_getContext(env, thiz); 232 if (ctx == NULL) { 233 jniThrowRuntimeException(env, "ImageReaderContext is not initialized"); 234 return NULL; 235 } 236 return ctx->getProducer(); 237} 238 239static void ImageReader_setNativeContext(JNIEnv* env, 240 jobject thiz, sp<JNIImageReaderContext> ctx) 241{ 242 ALOGV("%s:", __FUNCTION__); 243 JNIImageReaderContext* const p = ImageReader_getContext(env, thiz); 244 if (ctx != 0) { 245 ctx->incStrong((void*)ImageReader_setNativeContext); 246 } 247 if (p) { 248 p->decStrong((void*)ImageReader_setNativeContext); 249 } 250 env->SetLongField(thiz, gImageReaderClassInfo.mNativeContext, 251 reinterpret_cast<jlong>(ctx.get())); 252} 253 254static CpuConsumer::LockedBuffer* Image_getLockedBuffer(JNIEnv* env, jobject image) 255{ 256 return reinterpret_cast<CpuConsumer::LockedBuffer*>( 257 env->GetLongField(image, gSurfaceImageClassInfo.mLockedBuffer)); 258} 259 260static void Image_setBuffer(JNIEnv* env, jobject thiz, 261 const CpuConsumer::LockedBuffer* buffer) 262{ 263 env->SetLongField(thiz, gSurfaceImageClassInfo.mLockedBuffer, reinterpret_cast<jlong>(buffer)); 264} 265 266// Some formats like JPEG defined with different values between android.graphics.ImageFormat and 267// graphics.h, need convert to the one defined in graphics.h here. 268static int Image_getPixelFormat(JNIEnv* env, int format) 269{ 270 int jpegFormat, rawSensorFormat; 271 jfieldID fid; 272 273 ALOGV("%s: format = 0x%x", __FUNCTION__, format); 274 275 jclass imageFormatClazz = env->FindClass("android/graphics/ImageFormat"); 276 ALOG_ASSERT(imageFormatClazz != NULL); 277 278 fid = env->GetStaticFieldID(imageFormatClazz, "JPEG", "I"); 279 jpegFormat = env->GetStaticIntField(imageFormatClazz, fid); 280 281 // Translate the JPEG to BLOB for camera purpose. 282 if (format == jpegFormat) { 283 format = HAL_PIXEL_FORMAT_BLOB; 284 } 285 286 return format; 287} 288 289static uint32_t Image_getJpegSize(CpuConsumer::LockedBuffer* buffer) 290{ 291 ALOG_ASSERT(buffer != NULL, "Input buffer is NULL!!!"); 292 uint32_t size = 0; 293 uint32_t width = buffer->width; 294 uint8_t* jpegBuffer = buffer->data; 295 296 // First check for JPEG transport header at the end of the buffer 297 uint8_t* header = jpegBuffer + (width - sizeof(struct camera3_jpeg_blob)); 298 struct camera3_jpeg_blob *blob = (struct camera3_jpeg_blob*)(header); 299 if (blob->jpeg_blob_id == CAMERA3_JPEG_BLOB_ID) { 300 size = blob->jpeg_size; 301 ALOGV("%s: Jpeg size = %d", __FUNCTION__, size); 302 } 303 304 // failed to find size, default to whole buffer 305 if (size == 0) { 306 /* 307 * This is a problem because not including the JPEG header 308 * means that in certain rare situations a regular JPEG blob 309 * will be misidentified as having a header, in which case 310 * we will get a garbage size value. 311 */ 312 ALOGW("%s: No JPEG header detected, defaulting to size=width=%d", 313 __FUNCTION__, width); 314 size = width; 315 } 316 317 return size; 318} 319 320static void Image_getLockedBufferInfo(JNIEnv* env, CpuConsumer::LockedBuffer* buffer, int idx, 321 uint8_t **base, uint32_t *size) 322{ 323 ALOG_ASSERT(buffer != NULL, "Input buffer is NULL!!!"); 324 ALOG_ASSERT(base != NULL, "base is NULL!!!"); 325 ALOG_ASSERT(size != NULL, "size is NULL!!!"); 326 ALOG_ASSERT((idx < IMAGE_READER_MAX_NUM_PLANES) && (idx >= 0)); 327 328 ALOGV("%s: buffer: %p", __FUNCTION__, buffer); 329 330 uint32_t dataSize, ySize, cSize, cStride; 331 uint8_t *cb, *cr; 332 uint8_t *pData = NULL; 333 int bytesPerPixel = 0; 334 335 dataSize = ySize = cSize = cStride = 0; 336 int32_t fmt = buffer->format; 337 switch (fmt) { 338 case HAL_PIXEL_FORMAT_YCbCr_420_888: 339 pData = 340 (idx == 0) ? 341 buffer->data : 342 (idx == 1) ? 343 buffer->dataCb : 344 buffer->dataCr; 345 if (idx == 0) { 346 dataSize = buffer->stride * buffer->height; 347 } else { 348 dataSize = buffer->chromaStride * buffer->height / 2; 349 } 350 break; 351 // NV21 352 case HAL_PIXEL_FORMAT_YCrCb_420_SP: 353 cr = buffer->data + (buffer->stride * buffer->height); 354 cb = cr + 1; 355 ySize = buffer->width * buffer->height; 356 cSize = buffer->width * buffer->height / 2; 357 358 pData = 359 (idx == 0) ? 360 buffer->data : 361 (idx == 1) ? 362 cb: 363 cr; 364 365 dataSize = (idx == 0) ? ySize : cSize; 366 break; 367 case HAL_PIXEL_FORMAT_YV12: 368 // Y and C stride need to be 16 pixel aligned. 369 LOG_ALWAYS_FATAL_IF(buffer->stride % 16, 370 "Stride is not 16 pixel aligned %d", buffer->stride); 371 372 ySize = buffer->stride * buffer->height; 373 cStride = ALIGN(buffer->stride / 2, 16); 374 cr = buffer->data + ySize; 375 cSize = cStride * buffer->height / 2; 376 cb = cr + cSize; 377 378 pData = 379 (idx == 0) ? 380 buffer->data : 381 (idx == 1) ? 382 cb : 383 cr; 384 dataSize = (idx == 0) ? ySize : cSize; 385 break; 386 case HAL_PIXEL_FORMAT_Y8: 387 // Single plane, 8bpp. 388 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 389 390 pData = buffer->data; 391 dataSize = buffer->stride * buffer->height; 392 break; 393 case HAL_PIXEL_FORMAT_Y16: 394 bytesPerPixel = 2; 395 // Single plane, 16bpp, strides are specified in pixels, not in bytes 396 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 397 398 pData = buffer->data; 399 dataSize = buffer->stride * buffer->height * bytesPerPixel; 400 break; 401 case HAL_PIXEL_FORMAT_BLOB: 402 // Used for JPEG data, height must be 1, width == size, single plane. 403 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 404 ALOG_ASSERT(buffer->height == 1, "JPEG should has height value %d", buffer->height); 405 406 pData = buffer->data; 407 dataSize = Image_getJpegSize(buffer); 408 break; 409 case HAL_PIXEL_FORMAT_RAW_SENSOR: 410 // Single plane 16bpp bayer data. 411 bytesPerPixel = 2; 412 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 413 pData = buffer->data; 414 dataSize = buffer->stride * buffer->height * bytesPerPixel; 415 break; 416 case HAL_PIXEL_FORMAT_RGBA_8888: 417 case HAL_PIXEL_FORMAT_RGBX_8888: 418 // Single plane, 32bpp. 419 bytesPerPixel = 4; 420 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 421 pData = buffer->data; 422 dataSize = buffer->stride * buffer->height * bytesPerPixel; 423 break; 424 case HAL_PIXEL_FORMAT_RGB_565: 425 // Single plane, 16bpp. 426 bytesPerPixel = 2; 427 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 428 pData = buffer->data; 429 dataSize = buffer->stride * buffer->height * bytesPerPixel; 430 break; 431 case HAL_PIXEL_FORMAT_RGB_888: 432 // Single plane, 24bpp. 433 bytesPerPixel = 3; 434 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 435 pData = buffer->data; 436 dataSize = buffer->stride * buffer->height * bytesPerPixel; 437 break; 438 default: 439 jniThrowExceptionFmt(env, "java/lang/UnsupportedOperationException", 440 "Pixel format: 0x%x is unsupported", fmt); 441 break; 442 } 443 444 *base = pData; 445 *size = dataSize; 446} 447 448static jint Image_imageGetPixelStride(JNIEnv* env, CpuConsumer::LockedBuffer* buffer, int idx) 449{ 450 ALOGV("%s: buffer index: %d", __FUNCTION__, idx); 451 ALOG_ASSERT((idx < IMAGE_READER_MAX_NUM_PLANES) && (idx >= 0), "Index is out of range:%d", idx); 452 453 int pixelStride = 0; 454 ALOG_ASSERT(buffer != NULL, "buffer is NULL"); 455 456 int32_t fmt = buffer->format; 457 switch (fmt) { 458 case HAL_PIXEL_FORMAT_YCbCr_420_888: 459 pixelStride = (idx == 0) ? 1 : buffer->chromaStep; 460 break; 461 case HAL_PIXEL_FORMAT_YCrCb_420_SP: 462 pixelStride = (idx == 0) ? 1 : 2; 463 break; 464 case HAL_PIXEL_FORMAT_Y8: 465 // Single plane 8bpp data. 466 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 467 pixelStride; 468 break; 469 case HAL_PIXEL_FORMAT_YV12: 470 pixelStride = 1; 471 break; 472 case HAL_PIXEL_FORMAT_BLOB: 473 // Used for JPEG data, single plane, row and pixel strides are 0 474 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 475 pixelStride = 0; 476 break; 477 case HAL_PIXEL_FORMAT_Y16: 478 case HAL_PIXEL_FORMAT_RAW_SENSOR: 479 case HAL_PIXEL_FORMAT_RGB_565: 480 // Single plane 16bpp data. 481 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 482 pixelStride = 2; 483 break; 484 case HAL_PIXEL_FORMAT_RGBA_8888: 485 case HAL_PIXEL_FORMAT_RGBX_8888: 486 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 487 pixelStride = 4; 488 break; 489 case HAL_PIXEL_FORMAT_RGB_888: 490 // Single plane, 24bpp. 491 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 492 pixelStride = 3; 493 break; 494 default: 495 jniThrowExceptionFmt(env, "java/lang/UnsupportedOperationException", 496 "Pixel format: 0x%x is unsupported", fmt); 497 break; 498 } 499 500 return pixelStride; 501} 502 503static jint Image_imageGetRowStride(JNIEnv* env, CpuConsumer::LockedBuffer* buffer, int idx) 504{ 505 ALOGV("%s: buffer index: %d", __FUNCTION__, idx); 506 ALOG_ASSERT((idx < IMAGE_READER_MAX_NUM_PLANES) && (idx >= 0)); 507 508 int rowStride = 0; 509 ALOG_ASSERT(buffer != NULL, "buffer is NULL"); 510 511 int32_t fmt = buffer->format; 512 513 switch (fmt) { 514 case HAL_PIXEL_FORMAT_YCbCr_420_888: 515 rowStride = (idx == 0) ? buffer->stride : buffer->chromaStride; 516 break; 517 case HAL_PIXEL_FORMAT_YCrCb_420_SP: 518 rowStride = buffer->width; 519 break; 520 case HAL_PIXEL_FORMAT_YV12: 521 LOG_ALWAYS_FATAL_IF(buffer->stride % 16, 522 "Stride is not 16 pixel aligned %d", buffer->stride); 523 rowStride = (idx == 0) ? buffer->stride : ALIGN(buffer->stride / 2, 16); 524 break; 525 case HAL_PIXEL_FORMAT_BLOB: 526 // Used for JPEG data, single plane, row and pixel strides are 0 527 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 528 rowStride = 0; 529 break; 530 case HAL_PIXEL_FORMAT_Y8: 531 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 532 LOG_ALWAYS_FATAL_IF(buffer->stride % 16, 533 "Stride is not 16 pixel aligned %d", buffer->stride); 534 rowStride = buffer->stride; 535 break; 536 case HAL_PIXEL_FORMAT_Y16: 537 case HAL_PIXEL_FORMAT_RAW_SENSOR: 538 // In native side, strides are specified in pixels, not in bytes. 539 // Single plane 16bpp bayer data. even width/height, 540 // row stride multiple of 16 pixels (32 bytes) 541 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 542 LOG_ALWAYS_FATAL_IF(buffer->stride % 16, 543 "Stride is not 16 pixel aligned %d", buffer->stride); 544 rowStride = buffer->stride * 2; 545 break; 546 case HAL_PIXEL_FORMAT_RGB_565: 547 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 548 rowStride = buffer->stride * 2; 549 break; 550 case HAL_PIXEL_FORMAT_RGBA_8888: 551 case HAL_PIXEL_FORMAT_RGBX_8888: 552 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 553 rowStride = buffer->stride * 4; 554 break; 555 case HAL_PIXEL_FORMAT_RGB_888: 556 // Single plane, 24bpp. 557 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 558 rowStride = buffer->stride * 3; 559 break; 560 default: 561 ALOGE("%s Pixel format: 0x%x is unsupported", __FUNCTION__, fmt); 562 jniThrowException(env, "java/lang/UnsupportedOperationException", 563 "unsupported buffer format"); 564 break; 565 } 566 567 return rowStride; 568} 569 570// ---------------------------------------------------------------------------- 571 572static void ImageReader_classInit(JNIEnv* env, jclass clazz) 573{ 574 ALOGV("%s:", __FUNCTION__); 575 576 jclass imageClazz = env->FindClass("android/media/ImageReader$SurfaceImage"); 577 LOG_ALWAYS_FATAL_IF(imageClazz == NULL, 578 "can't find android/graphics/ImageReader$SurfaceImage"); 579 gSurfaceImageClassInfo.mLockedBuffer = env->GetFieldID( 580 imageClazz, ANDROID_MEDIA_SURFACEIMAGE_BUFFER_JNI_ID, "J"); 581 LOG_ALWAYS_FATAL_IF(gSurfaceImageClassInfo.mLockedBuffer == NULL, 582 "can't find android/graphics/ImageReader.%s", 583 ANDROID_MEDIA_SURFACEIMAGE_BUFFER_JNI_ID); 584 585 gSurfaceImageClassInfo.mTimestamp = env->GetFieldID( 586 imageClazz, ANDROID_MEDIA_SURFACEIMAGE_TS_JNI_ID, "J"); 587 LOG_ALWAYS_FATAL_IF(gSurfaceImageClassInfo.mTimestamp == NULL, 588 "can't find android/graphics/ImageReader.%s", 589 ANDROID_MEDIA_SURFACEIMAGE_TS_JNI_ID); 590 591 gImageReaderClassInfo.mNativeContext = env->GetFieldID( 592 clazz, ANDROID_MEDIA_IMAGEREADER_CTX_JNI_ID, "J"); 593 LOG_ALWAYS_FATAL_IF(gImageReaderClassInfo.mNativeContext == NULL, 594 "can't find android/graphics/ImageReader.%s", 595 ANDROID_MEDIA_IMAGEREADER_CTX_JNI_ID); 596 597 gImageReaderClassInfo.postEventFromNative = env->GetStaticMethodID( 598 clazz, "postEventFromNative", "(Ljava/lang/Object;)V"); 599 LOG_ALWAYS_FATAL_IF(gImageReaderClassInfo.postEventFromNative == NULL, 600 "can't find android/graphics/ImageReader.postEventFromNative"); 601 602 jclass planeClazz = env->FindClass("android/media/ImageReader$SurfaceImage$SurfacePlane"); 603 LOG_ALWAYS_FATAL_IF(planeClazz == NULL, "Can not find SurfacePlane class"); 604 // FindClass only gives a local reference of jclass object. 605 gSurfacePlaneClassInfo.clazz = (jclass) env->NewGlobalRef(planeClazz); 606 gSurfacePlaneClassInfo.ctor = env->GetMethodID(gSurfacePlaneClassInfo.clazz, "<init>", 607 "(Landroid/media/ImageReader$SurfaceImage;III)V"); 608 LOG_ALWAYS_FATAL_IF(gSurfacePlaneClassInfo.ctor == NULL, 609 "Can not find SurfacePlane constructor"); 610} 611 612static void ImageReader_init(JNIEnv* env, jobject thiz, jobject weakThiz, 613 jint width, jint height, jint format, jint maxImages) 614{ 615 status_t res; 616 int nativeFormat; 617 618 ALOGV("%s: width:%d, height: %d, format: 0x%x, maxImages:%d", 619 __FUNCTION__, width, height, format, maxImages); 620 621 nativeFormat = Image_getPixelFormat(env, format); 622 623 sp<IGraphicBufferProducer> gbProducer; 624 sp<IGraphicBufferConsumer> gbConsumer; 625 BufferQueue::createBufferQueue(&gbProducer, &gbConsumer); 626 sp<CpuConsumer> consumer = new CpuConsumer(gbConsumer, maxImages, 627 /*controlledByApp*/true); 628 // TODO: throw dvm exOutOfMemoryError? 629 if (consumer == NULL) { 630 jniThrowRuntimeException(env, "Failed to allocate native CpuConsumer"); 631 return; 632 } 633 634 jclass clazz = env->GetObjectClass(thiz); 635 if (clazz == NULL) { 636 jniThrowRuntimeException(env, "Can't find android/graphics/ImageReader"); 637 return; 638 } 639 sp<JNIImageReaderContext> ctx(new JNIImageReaderContext(env, weakThiz, clazz, maxImages)); 640 ctx->setCpuConsumer(consumer); 641 ctx->setProducer(gbProducer); 642 consumer->setFrameAvailableListener(ctx); 643 ImageReader_setNativeContext(env, thiz, ctx); 644 ctx->setBufferFormat(nativeFormat); 645 ctx->setBufferWidth(width); 646 ctx->setBufferHeight(height); 647 648 // Set the width/height/format to the CpuConsumer 649 res = consumer->setDefaultBufferSize(width, height); 650 if (res != OK) { 651 jniThrowException(env, "java/lang/IllegalStateException", 652 "Failed to set CpuConsumer buffer size"); 653 return; 654 } 655 res = consumer->setDefaultBufferFormat(nativeFormat); 656 if (res != OK) { 657 jniThrowException(env, "java/lang/IllegalStateException", 658 "Failed to set CpuConsumer buffer format"); 659 } 660} 661 662static void ImageReader_close(JNIEnv* env, jobject thiz) 663{ 664 ALOGV("%s:", __FUNCTION__); 665 666 JNIImageReaderContext* const ctx = ImageReader_getContext(env, thiz); 667 if (ctx == NULL) { 668 // ImageReader is already closed. 669 return; 670 } 671 672 CpuConsumer* consumer = ImageReader_getCpuConsumer(env, thiz); 673 if (consumer != NULL) { 674 consumer->abandon(); 675 consumer->setFrameAvailableListener(NULL); 676 } 677 ImageReader_setNativeContext(env, thiz, NULL); 678} 679 680static void ImageReader_imageRelease(JNIEnv* env, jobject thiz, jobject image) 681{ 682 ALOGV("%s:", __FUNCTION__); 683 JNIImageReaderContext* ctx = ImageReader_getContext(env, thiz); 684 if (ctx == NULL) { 685 ALOGW("ImageReader#close called before Image#close, consider calling Image#close first"); 686 return; 687 } 688 689 CpuConsumer* consumer = ctx->getCpuConsumer(); 690 CpuConsumer::LockedBuffer* buffer = Image_getLockedBuffer(env, image); 691 if (!buffer) { 692 ALOGW("Image already released!!!"); 693 return; 694 } 695 consumer->unlockBuffer(*buffer); 696 Image_setBuffer(env, image, NULL); 697 ctx->returnLockedBuffer(buffer); 698} 699 700static jint ImageReader_imageSetup(JNIEnv* env, jobject thiz, 701 jobject image) 702{ 703 ALOGV("%s:", __FUNCTION__); 704 JNIImageReaderContext* ctx = ImageReader_getContext(env, thiz); 705 if (ctx == NULL) { 706 jniThrowRuntimeException(env, "ImageReaderContext is not initialized"); 707 return -1; 708 } 709 710 CpuConsumer* consumer = ctx->getCpuConsumer(); 711 CpuConsumer::LockedBuffer* buffer = ctx->getLockedBuffer(); 712 if (buffer == NULL) { 713 ALOGW("Unable to acquire a lockedBuffer, very likely client tries to lock more than" 714 " maxImages buffers"); 715 return ACQUIRE_MAX_IMAGES; 716 } 717 status_t res = consumer->lockNextBuffer(buffer); 718 if (res != NO_ERROR) { 719 ctx->returnLockedBuffer(buffer); 720 if (res != BAD_VALUE /*no buffers*/) { 721 if (res == NOT_ENOUGH_DATA) { 722 return ACQUIRE_MAX_IMAGES; 723 } else { 724 ALOGE("%s Fail to lockNextBuffer with error: %d ", 725 __FUNCTION__, res); 726 jniThrowExceptionFmt(env, "java/lang/AssertionError", 727 "Unknown error (%d) when we tried to lock buffer.", 728 res); 729 } 730 } 731 return ACQUIRE_NO_BUFFERS; 732 } 733 734 if (buffer->format == HAL_PIXEL_FORMAT_YCrCb_420_SP) { 735 jniThrowException(env, "java/lang/UnsupportedOperationException", 736 "NV21 format is not supported by ImageReader"); 737 return -1; 738 } 739 740 // Check if the left-top corner of the crop rect is origin, we currently assume this point is 741 // zero, will revist this once this assumption turns out problematic. 742 Point lt = buffer->crop.leftTop(); 743 if (lt.x != 0 || lt.y != 0) { 744 jniThrowExceptionFmt(env, "java/lang/UnsupportedOperationException", 745 "crop left top corner [%d, %d] need to be at origin", lt.x, lt.y); 746 return -1; 747 } 748 749 // Check if the producer buffer configurations match what ImageReader configured. 750 // We want to fail for the very first image because this case is too bad. 751 int outputWidth = buffer->width; 752 int outputHeight = buffer->height; 753 754 // Correct width/height when crop is set. 755 if (!buffer->crop.isEmpty()) { 756 outputWidth = buffer->crop.getWidth(); 757 outputHeight = buffer->crop.getHeight(); 758 } 759 760 int imageReaderWidth = ctx->getBufferWidth(); 761 int imageReaderHeight = ctx->getBufferHeight(); 762 if ((buffer->format != HAL_PIXEL_FORMAT_BLOB) && 763 (imageReaderWidth != outputWidth || imageReaderHeight > outputHeight)) { 764 /** 765 * For video decoder, the buffer height is actually the vertical stride, 766 * which is always >= actual image height. For future, decoder need provide 767 * right crop rectangle to CpuConsumer to indicate the actual image height, 768 * see bug 9563986. After this bug is fixed, we can enforce the height equal 769 * check. Right now, only make sure buffer height is no less than ImageReader 770 * height. 771 */ 772 jniThrowExceptionFmt(env, "java/lang/IllegalStateException", 773 "Producer buffer size: %dx%d, doesn't match ImageReader configured size: %dx%d", 774 outputWidth, outputHeight, imageReaderWidth, imageReaderHeight); 775 return -1; 776 } 777 778 int imgReaderFmt = ctx->getBufferFormat(); 779 int bufFmt = buffer->format; 780 if (imgReaderFmt != bufFmt) { 781 // Special casing for when producer switches to a format compatible with flexible YUV 782 // (HAL_PIXEL_FORMAT_YCbCr_420_888). 783 if (imgReaderFmt == HAL_PIXEL_FORMAT_YCbCr_420_888 && (bufFmt == 784 HAL_PIXEL_FORMAT_YCrCb_420_SP || bufFmt == HAL_PIXEL_FORMAT_YV12)) { 785 ctx->setBufferFormat(bufFmt); 786 ALOGV("%s: Overriding buffer format YUV_420_888 to %x.", __FUNCTION__, bufFmt); 787 } else { 788 // Return the buffer to the queue. 789 consumer->unlockBuffer(*buffer); 790 ctx->returnLockedBuffer(buffer); 791 792 // Throw exception 793 ALOGE("Producer output buffer format: 0x%x, ImageReader configured format: 0x%x", 794 buffer->format, ctx->getBufferFormat()); 795 String8 msg; 796 msg.appendFormat("The producer output buffer format 0x%x doesn't " 797 "match the ImageReader's configured buffer format 0x%x.", 798 buffer->format, ctx->getBufferFormat()); 799 jniThrowException(env, "java/lang/UnsupportedOperationException", 800 msg.string()); 801 return -1; 802 } 803 } 804 // Set SurfaceImage instance member variables 805 Image_setBuffer(env, image, buffer); 806 env->SetLongField(image, gSurfaceImageClassInfo.mTimestamp, 807 static_cast<jlong>(buffer->timestamp)); 808 809 return ACQUIRE_SUCCESS; 810} 811 812static jobject ImageReader_getSurface(JNIEnv* env, jobject thiz) 813{ 814 ALOGV("%s: ", __FUNCTION__); 815 816 IGraphicBufferProducer* gbp = ImageReader_getProducer(env, thiz); 817 if (gbp == NULL) { 818 jniThrowRuntimeException(env, "CpuConsumer is uninitialized"); 819 return NULL; 820 } 821 822 // Wrap the IGBP in a Java-language Surface. 823 return android_view_Surface_createFromIGraphicBufferProducer(env, gbp); 824} 825 826static jobject Image_createSurfacePlane(JNIEnv* env, jobject thiz, int idx) 827{ 828 int rowStride, pixelStride; 829 ALOGV("%s: buffer index: %d", __FUNCTION__, idx); 830 831 CpuConsumer::LockedBuffer* buffer = Image_getLockedBuffer(env, thiz); 832 833 ALOG_ASSERT(buffer != NULL); 834 if (buffer == NULL) { 835 jniThrowException(env, "java/lang/IllegalStateException", "Image was released"); 836 } 837 rowStride = Image_imageGetRowStride(env, buffer, idx); 838 pixelStride = Image_imageGetPixelStride(env, buffer, idx); 839 840 jobject surfPlaneObj = env->NewObject(gSurfacePlaneClassInfo.clazz, 841 gSurfacePlaneClassInfo.ctor, thiz, idx, rowStride, pixelStride); 842 843 return surfPlaneObj; 844} 845 846static jobject Image_getByteBuffer(JNIEnv* env, jobject thiz, int idx) 847{ 848 uint8_t *base = NULL; 849 uint32_t size = 0; 850 jobject byteBuffer; 851 852 ALOGV("%s: buffer index: %d", __FUNCTION__, idx); 853 854 CpuConsumer::LockedBuffer* buffer = Image_getLockedBuffer(env, thiz); 855 856 if (buffer == NULL) { 857 jniThrowException(env, "java/lang/IllegalStateException", "Image was released"); 858 } 859 860 // Create byteBuffer from native buffer 861 Image_getLockedBufferInfo(env, buffer, idx, &base, &size); 862 863 if (size > static_cast<uint32_t>(INT32_MAX)) { 864 // Byte buffer have 'int capacity', so check the range 865 jniThrowExceptionFmt(env, "java/lang/IllegalStateException", 866 "Size too large for bytebuffer capacity " PRIu32, size); 867 return NULL; 868 } 869 870 byteBuffer = env->NewDirectByteBuffer(base, size); 871 // TODO: throw dvm exOutOfMemoryError? 872 if ((byteBuffer == NULL) && (env->ExceptionCheck() == false)) { 873 jniThrowException(env, "java/lang/IllegalStateException", "Failed to allocate ByteBuffer"); 874 } 875 876 return byteBuffer; 877} 878 879} // extern "C" 880 881// ---------------------------------------------------------------------------- 882 883static JNINativeMethod gImageReaderMethods[] = { 884 {"nativeClassInit", "()V", (void*)ImageReader_classInit }, 885 {"nativeInit", "(Ljava/lang/Object;IIII)V", (void*)ImageReader_init }, 886 {"nativeClose", "()V", (void*)ImageReader_close }, 887 {"nativeReleaseImage", "(Landroid/media/Image;)V", (void*)ImageReader_imageRelease }, 888 {"nativeImageSetup", "(Landroid/media/Image;)I", (void*)ImageReader_imageSetup }, 889 {"nativeGetSurface", "()Landroid/view/Surface;", (void*)ImageReader_getSurface }, 890}; 891 892static JNINativeMethod gImageMethods[] = { 893 {"nativeImageGetBuffer", "(I)Ljava/nio/ByteBuffer;", (void*)Image_getByteBuffer }, 894 {"nativeCreatePlane", "(I)Landroid/media/ImageReader$SurfaceImage$SurfacePlane;", 895 (void*)Image_createSurfacePlane }, 896}; 897 898int register_android_media_ImageReader(JNIEnv *env) { 899 900 int ret1 = AndroidRuntime::registerNativeMethods(env, 901 "android/media/ImageReader", gImageReaderMethods, NELEM(gImageReaderMethods)); 902 903 int ret2 = AndroidRuntime::registerNativeMethods(env, 904 "android/media/ImageReader$SurfaceImage", gImageMethods, NELEM(gImageMethods)); 905 906 return (ret1 || ret2); 907} 908