android_media_ImageReader.cpp revision ef961215599b1c154130d4e64e46a401d6bfef67
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#define ALIGN(x, mask) ( ((x) + (mask) - 1) & ~((mask) - 1) ) 37 38#define ANDROID_MEDIA_IMAGEREADER_JNI_ID "mCpuConsumer" 39#define ANDROID_MEDIA_IMAGEREADER_CTX_JNI_ID "mNativeContext" 40#define ANDROID_MEDIA_SURFACEIMAGE_BUFFER_JNI_ID "mLockedBuffer" 41#define ANDROID_MEDIA_SURFACEIMAGE_TS_JNI_ID "mTimestamp" 42 43// ---------------------------------------------------------------------------- 44 45using namespace android; 46 47enum { 48 IMAGE_READER_MAX_NUM_PLANES = 3, 49}; 50 51static struct { 52 jfieldID mNativeContext; 53 jmethodID postEventFromNative; 54} gImageReaderClassInfo; 55 56static struct { 57 jfieldID mLockedBuffer; 58 jfieldID mTimestamp; 59} gSurfaceImageClassInfo; 60 61static struct { 62 jclass clazz; 63 jmethodID ctor; 64} gSurfacePlaneClassInfo; 65 66// ---------------------------------------------------------------------------- 67 68class JNIImageReaderContext : public CpuConsumer::FrameAvailableListener 69{ 70public: 71 JNIImageReaderContext(JNIEnv* env, jobject weakThiz, jclass clazz, int maxImages); 72 73 virtual ~JNIImageReaderContext(); 74 75 virtual void onFrameAvailable(); 76 77 CpuConsumer::LockedBuffer* getLockedBuffer(); 78 79 void returnLockedBuffer(CpuConsumer::LockedBuffer* buffer); 80 81 CpuConsumer* getCpuConsumer() { return mConsumer.get(); } 82 83 void setCpuConsumer(sp<CpuConsumer> consumer) { mConsumer = consumer; } 84 85 void setBufferFormat(int format) { mFormat = format; } 86 int getBufferFormat() { return mFormat; } 87 88 void setBufferWidth(int width) { mWidth = width; } 89 int getBufferWidth() { return mWidth; } 90 91 void setBufferHeight(int height) { mHeight = height; } 92 int getBufferHeight() { return mHeight; } 93 94private: 95 static JNIEnv* getJNIEnv(bool* needsDetach); 96 static void detachJNI(); 97 98 List<CpuConsumer::LockedBuffer*> mBuffers; 99 sp<CpuConsumer> mConsumer; 100 jobject mWeakThiz; 101 jclass mClazz; 102 int mFormat; 103 int mWidth; 104 int mHeight; 105}; 106 107JNIImageReaderContext::JNIImageReaderContext(JNIEnv* env, 108 jobject weakThiz, jclass clazz, int maxImages) : 109 mWeakThiz(env->NewGlobalRef(weakThiz)), 110 mClazz((jclass)env->NewGlobalRef(clazz)) { 111 for (int i = 0; i < maxImages; i++) { 112 CpuConsumer::LockedBuffer *buffer = new CpuConsumer::LockedBuffer; 113 mBuffers.push_back(buffer); 114 } 115} 116 117JNIEnv* JNIImageReaderContext::getJNIEnv(bool* needsDetach) { 118 LOG_ALWAYS_FATAL_IF(needsDetach == NULL, "needsDetach is null!!!"); 119 *needsDetach = false; 120 JNIEnv* env = AndroidRuntime::getJNIEnv(); 121 if (env == NULL) { 122 JavaVMAttachArgs args = {JNI_VERSION_1_4, NULL, NULL}; 123 JavaVM* vm = AndroidRuntime::getJavaVM(); 124 int result = vm->AttachCurrentThread(&env, (void*) &args); 125 if (result != JNI_OK) { 126 ALOGE("thread attach failed: %#x", result); 127 return NULL; 128 } 129 *needsDetach = true; 130 } 131 return env; 132} 133 134void JNIImageReaderContext::detachJNI() { 135 JavaVM* vm = AndroidRuntime::getJavaVM(); 136 int result = vm->DetachCurrentThread(); 137 if (result != JNI_OK) { 138 ALOGE("thread detach failed: %#x", result); 139 } 140} 141 142CpuConsumer::LockedBuffer* JNIImageReaderContext::getLockedBuffer() { 143 if (mBuffers.empty()) { 144 return NULL; 145 } 146 // Return a LockedBuffer pointer and remove it from the list 147 List<CpuConsumer::LockedBuffer*>::iterator it = mBuffers.begin(); 148 CpuConsumer::LockedBuffer* buffer = *it; 149 mBuffers.erase(it); 150 return buffer; 151} 152 153void JNIImageReaderContext::returnLockedBuffer(CpuConsumer::LockedBuffer * buffer) { 154 mBuffers.push_back(buffer); 155} 156 157JNIImageReaderContext::~JNIImageReaderContext() { 158 bool needsDetach = false; 159 JNIEnv* env = getJNIEnv(&needsDetach); 160 if (env != NULL) { 161 env->DeleteGlobalRef(mWeakThiz); 162 env->DeleteGlobalRef(mClazz); 163 } else { 164 ALOGW("leaking JNI object references"); 165 } 166 if (needsDetach) { 167 detachJNI(); 168 } 169 170 // Delete LockedBuffers 171 for (List<CpuConsumer::LockedBuffer *>::iterator it = mBuffers.begin(); 172 it != mBuffers.end(); it++) { 173 delete *it; 174 } 175 mBuffers.clear(); 176 mConsumer.clear(); 177} 178 179void JNIImageReaderContext::onFrameAvailable() 180{ 181 ALOGV("%s: frame available", __FUNCTION__); 182 bool needsDetach = false; 183 JNIEnv* env = getJNIEnv(&needsDetach); 184 if (env != NULL) { 185 env->CallStaticVoidMethod(mClazz, gImageReaderClassInfo.postEventFromNative, mWeakThiz); 186 } else { 187 ALOGW("onFrameAvailable event will not posted"); 188 } 189 if (needsDetach) { 190 detachJNI(); 191 } 192} 193 194// ---------------------------------------------------------------------------- 195 196extern "C" { 197 198static JNIImageReaderContext* ImageReader_getContext(JNIEnv* env, jobject thiz) 199{ 200 JNIImageReaderContext *ctx; 201 ctx = reinterpret_cast<JNIImageReaderContext *> 202 (env->GetLongField(thiz, gImageReaderClassInfo.mNativeContext)); 203 return ctx; 204} 205 206static CpuConsumer* ImageReader_getCpuConsumer(JNIEnv* env, jobject thiz) 207{ 208 ALOGV("%s:", __FUNCTION__); 209 JNIImageReaderContext* const ctx = ImageReader_getContext(env, thiz); 210 if (ctx == NULL) { 211 jniThrowRuntimeException(env, "ImageReaderContext is not initialized"); 212 return NULL; 213 } 214 return ctx->getCpuConsumer(); 215} 216 217static void ImageReader_setNativeContext(JNIEnv* env, 218 jobject thiz, sp<JNIImageReaderContext> ctx) 219{ 220 ALOGV("%s:", __FUNCTION__); 221 JNIImageReaderContext* const p = ImageReader_getContext(env, thiz); 222 if (ctx != 0) { 223 ctx->incStrong((void*)ImageReader_setNativeContext); 224 } 225 if (p) { 226 p->decStrong((void*)ImageReader_setNativeContext); 227 } 228 env->SetLongField(thiz, gImageReaderClassInfo.mNativeContext, 229 reinterpret_cast<jlong>(ctx.get())); 230} 231 232static CpuConsumer::LockedBuffer* Image_getLockedBuffer(JNIEnv* env, jobject image) 233{ 234 return reinterpret_cast<CpuConsumer::LockedBuffer*>( 235 env->GetLongField(image, gSurfaceImageClassInfo.mLockedBuffer)); 236} 237 238static void Image_setBuffer(JNIEnv* env, jobject thiz, 239 const CpuConsumer::LockedBuffer* buffer) 240{ 241 env->SetLongField(thiz, gSurfaceImageClassInfo.mLockedBuffer, reinterpret_cast<jlong>(buffer)); 242} 243 244// Some formats like JPEG defined with different values between android.graphics.ImageFormat and 245// graphics.h, need convert to the one defined in graphics.h here. 246static int Image_getPixelFormat(JNIEnv* env, int format) 247{ 248 int jpegFormat, rawSensorFormat; 249 jfieldID fid; 250 251 ALOGV("%s: format = 0x%x", __FUNCTION__, format); 252 253 jclass imageFormatClazz = env->FindClass("android/graphics/ImageFormat"); 254 ALOG_ASSERT(imageFormatClazz != NULL); 255 256 fid = env->GetStaticFieldID(imageFormatClazz, "JPEG", "I"); 257 jpegFormat = env->GetStaticIntField(imageFormatClazz, fid); 258 fid = env->GetStaticFieldID(imageFormatClazz, "RAW_SENSOR", "I"); 259 rawSensorFormat = env->GetStaticIntField(imageFormatClazz, fid); 260 261 // Translate the JPEG to BLOB for camera purpose, an add more if more mismatch is found. 262 if (format == jpegFormat) { 263 format = HAL_PIXEL_FORMAT_BLOB; 264 } 265 // Same thing for RAW_SENSOR format 266 if (format == rawSensorFormat) { 267 format = HAL_PIXEL_FORMAT_RAW_SENSOR; 268 } 269 270 return format; 271} 272 273static uint32_t Image_getJpegSize(CpuConsumer::LockedBuffer* buffer) 274{ 275 ALOG_ASSERT(buffer != NULL, "Input buffer is NULL!!!"); 276 uint32_t size = 0; 277 uint32_t width = buffer->width; 278 uint8_t* jpegBuffer = buffer->data; 279 280 // First check for JPEG transport header at the end of the buffer 281 uint8_t* header = jpegBuffer + (width - sizeof(struct camera3_jpeg_blob)); 282 struct camera3_jpeg_blob *blob = (struct camera3_jpeg_blob*)(header); 283 if (blob->jpeg_blob_id == CAMERA3_JPEG_BLOB_ID) { 284 size = blob->jpeg_size; 285 ALOGV("%s: Jpeg size = %d", __FUNCTION__, size); 286 } 287 288 // failed to find size, default to whole buffer 289 if (size == 0) { 290 size = width; 291 } 292 293 return size; 294} 295 296static void Image_getLockedBufferInfo(JNIEnv* env, CpuConsumer::LockedBuffer* buffer, int idx, 297 uint8_t **base, uint32_t *size) 298{ 299 ALOG_ASSERT(buffer != NULL, "Input buffer is NULL!!!"); 300 ALOG_ASSERT(base != NULL, "base is NULL!!!"); 301 ALOG_ASSERT(size != NULL, "size is NULL!!!"); 302 ALOG_ASSERT((idx < IMAGE_READER_MAX_NUM_PLANES) && (idx >= 0)); 303 304 ALOGV("%s: buffer: %p", __FUNCTION__, buffer); 305 306 uint32_t dataSize, ySize, cSize, cStride; 307 uint8_t *cb, *cr; 308 uint8_t *pData = NULL; 309 310 dataSize = ySize = cSize = cStride = 0; 311 int32_t fmt = buffer->format; 312 switch (fmt) { 313 case HAL_PIXEL_FORMAT_YCbCr_420_888: 314 pData = 315 (idx == 0) ? 316 buffer->data : 317 (idx == 1) ? 318 buffer->dataCb : 319 buffer->dataCr; 320 if (idx == 0) { 321 dataSize = buffer->stride * buffer->height; 322 } else { 323 dataSize = buffer->chromaStride * buffer->height / 2; 324 } 325 break; 326 // NV21 327 case HAL_PIXEL_FORMAT_YCrCb_420_SP: 328 cr = buffer->data + (buffer->stride * buffer->height); 329 cb = cr + 1; 330 ySize = buffer->width * buffer->height; 331 cSize = buffer->width * buffer->height / 2; 332 333 pData = 334 (idx == 0) ? 335 buffer->data : 336 (idx == 1) ? 337 cb: 338 cr; 339 340 dataSize = (idx == 0) ? ySize : cSize; 341 break; 342 case HAL_PIXEL_FORMAT_YV12: 343 // Y and C stride need to be 16 pixel aligned. 344 LOG_ALWAYS_FATAL_IF(buffer->stride % 16, 345 "Stride is not 16 pixel aligned %d", buffer->stride); 346 347 ySize = buffer->stride * buffer->height; 348 cStride = ALIGN(buffer->stride / 2, 16); 349 cr = buffer->data + ySize; 350 cSize = cStride * buffer->height / 2; 351 cb = cr + cSize; 352 353 pData = 354 (idx == 0) ? 355 buffer->data : 356 (idx == 1) ? 357 cb : 358 cr; 359 dataSize = (idx == 0) ? ySize : cSize; 360 break; 361 case HAL_PIXEL_FORMAT_Y8: 362 // Single plane, 8bpp. 363 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 364 365 pData = buffer->data; 366 dataSize = buffer->stride * buffer->height; 367 break; 368 case HAL_PIXEL_FORMAT_Y16: 369 // Single plane, 16bpp, strides are specified in pixels, not in bytes 370 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 371 372 pData = buffer->data; 373 dataSize = buffer->stride * buffer->height * 2; 374 break; 375 case HAL_PIXEL_FORMAT_BLOB: 376 // Used for JPEG data, height must be 1, width == size, single plane. 377 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 378 ALOG_ASSERT(buffer->height == 1, "JPEG should has height value %d", buffer->height); 379 380 pData = buffer->data; 381 dataSize = Image_getJpegSize(buffer); 382 break; 383 case HAL_PIXEL_FORMAT_RAW_SENSOR: 384 // Single plane 16bpp bayer data. 385 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 386 pData = buffer->data; 387 dataSize = buffer->width * 2 * buffer->height; 388 break; 389 default: 390 jniThrowExceptionFmt(env, "java/lang/UnsupportedOperationException", 391 "Pixel format: 0x%x is unsupported", fmt); 392 break; 393 } 394 395 *base = pData; 396 *size = dataSize; 397} 398 399static jint Image_imageGetPixelStride(JNIEnv* env, CpuConsumer::LockedBuffer* buffer, int idx) 400{ 401 ALOGV("%s: buffer index: %d", __FUNCTION__, idx); 402 ALOG_ASSERT((idx < IMAGE_READER_MAX_NUM_PLANES) && (idx >= 0), "Index is out of range:%d", idx); 403 404 int pixelStride = 0; 405 ALOG_ASSERT(buffer != NULL, "buffer is NULL"); 406 407 int32_t fmt = buffer->format; 408 switch (fmt) { 409 case HAL_PIXEL_FORMAT_YCbCr_420_888: 410 pixelStride = (idx == 0) ? 1 : buffer->chromaStep; 411 break; 412 case HAL_PIXEL_FORMAT_YCrCb_420_SP: 413 pixelStride = (idx == 0) ? 1 : 2; 414 break; 415 case HAL_PIXEL_FORMAT_Y8: 416 // Single plane 8bpp data. 417 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 418 pixelStride; 419 break; 420 case HAL_PIXEL_FORMAT_YV12: 421 pixelStride = 1; 422 break; 423 case HAL_PIXEL_FORMAT_BLOB: 424 // Used for JPEG data, single plane, row and pixel strides are 0 425 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 426 pixelStride = 0; 427 break; 428 case HAL_PIXEL_FORMAT_Y16: 429 case HAL_PIXEL_FORMAT_RAW_SENSOR: 430 // Single plane 16bpp data. 431 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 432 pixelStride = 2; 433 break; 434 default: 435 jniThrowExceptionFmt(env, "java/lang/UnsupportedOperationException", 436 "Pixel format: 0x%x is unsupported", fmt); 437 break; 438 } 439 440 return pixelStride; 441} 442 443static jint Image_imageGetRowStride(JNIEnv* env, CpuConsumer::LockedBuffer* buffer, int idx) 444{ 445 ALOGV("%s: buffer index: %d", __FUNCTION__, idx); 446 ALOG_ASSERT((idx < IMAGE_READER_MAX_NUM_PLANES) && (idx >= 0)); 447 448 int rowStride = 0; 449 ALOG_ASSERT(buffer != NULL, "buffer is NULL"); 450 451 int32_t fmt = buffer->format; 452 453 switch (fmt) { 454 case HAL_PIXEL_FORMAT_YCbCr_420_888: 455 rowStride = (idx == 0) ? buffer->stride : buffer->chromaStride; 456 break; 457 case HAL_PIXEL_FORMAT_YCrCb_420_SP: 458 rowStride = buffer->width; 459 break; 460 case HAL_PIXEL_FORMAT_YV12: 461 LOG_ALWAYS_FATAL_IF(buffer->stride % 16, 462 "Stride is not 16 pixel aligned %d", buffer->stride); 463 rowStride = (idx == 0) ? buffer->stride : ALIGN(buffer->stride / 2, 16); 464 break; 465 case HAL_PIXEL_FORMAT_BLOB: 466 // Used for JPEG data, single plane, row and pixel strides are 0 467 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 468 rowStride = 0; 469 break; 470 case HAL_PIXEL_FORMAT_Y8: 471 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 472 LOG_ALWAYS_FATAL_IF(buffer->stride % 16, 473 "Stride is not 16 pixel aligned %d", buffer->stride); 474 rowStride = buffer->stride; 475 break; 476 case HAL_PIXEL_FORMAT_Y16: 477 case HAL_PIXEL_FORMAT_RAW_SENSOR: 478 // In native side, strides are specified in pixels, not in bytes. 479 // Single plane 16bpp bayer data. even width/height, 480 // row stride multiple of 16 pixels (32 bytes) 481 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 482 LOG_ALWAYS_FATAL_IF(buffer->stride % 16, 483 "Stride is not 16 pixel aligned %d", buffer->stride); 484 rowStride = buffer->stride * 2; 485 break; 486 default: 487 ALOGE("%s Pixel format: 0x%x is unsupported", __FUNCTION__, fmt); 488 jniThrowException(env, "java/lang/UnsupportedOperationException", 489 "unsupported buffer format"); 490 break; 491 } 492 493 return rowStride; 494} 495 496// ---------------------------------------------------------------------------- 497 498static void ImageReader_classInit(JNIEnv* env, jclass clazz) 499{ 500 ALOGV("%s:", __FUNCTION__); 501 502 jclass imageClazz = env->FindClass("android/media/ImageReader$SurfaceImage"); 503 LOG_ALWAYS_FATAL_IF(imageClazz == NULL, 504 "can't find android/graphics/ImageReader$SurfaceImage"); 505 gSurfaceImageClassInfo.mLockedBuffer = env->GetFieldID( 506 imageClazz, ANDROID_MEDIA_SURFACEIMAGE_BUFFER_JNI_ID, "J"); 507 LOG_ALWAYS_FATAL_IF(gSurfaceImageClassInfo.mLockedBuffer == NULL, 508 "can't find android/graphics/ImageReader.%s", 509 ANDROID_MEDIA_SURFACEIMAGE_BUFFER_JNI_ID); 510 511 gSurfaceImageClassInfo.mTimestamp = env->GetFieldID( 512 imageClazz, ANDROID_MEDIA_SURFACEIMAGE_TS_JNI_ID, "J"); 513 LOG_ALWAYS_FATAL_IF(gSurfaceImageClassInfo.mTimestamp == NULL, 514 "can't find android/graphics/ImageReader.%s", 515 ANDROID_MEDIA_SURFACEIMAGE_TS_JNI_ID); 516 517 gImageReaderClassInfo.mNativeContext = env->GetFieldID( 518 clazz, ANDROID_MEDIA_IMAGEREADER_CTX_JNI_ID, "J"); 519 LOG_ALWAYS_FATAL_IF(gImageReaderClassInfo.mNativeContext == NULL, 520 "can't find android/graphics/ImageReader.%s", 521 ANDROID_MEDIA_IMAGEREADER_CTX_JNI_ID); 522 523 gImageReaderClassInfo.postEventFromNative = env->GetStaticMethodID( 524 clazz, "postEventFromNative", "(Ljava/lang/Object;)V"); 525 LOG_ALWAYS_FATAL_IF(gImageReaderClassInfo.postEventFromNative == NULL, 526 "can't find android/graphics/ImageReader.postEventFromNative"); 527 528 jclass planeClazz = env->FindClass("android/media/ImageReader$SurfaceImage$SurfacePlane"); 529 LOG_ALWAYS_FATAL_IF(planeClazz == NULL, "Can not find SurfacePlane class"); 530 // FindClass only gives a local reference of jclass object. 531 gSurfacePlaneClassInfo.clazz = (jclass) env->NewGlobalRef(planeClazz); 532 gSurfacePlaneClassInfo.ctor = env->GetMethodID(gSurfacePlaneClassInfo.clazz, "<init>", 533 "(Landroid/media/ImageReader$SurfaceImage;III)V"); 534 LOG_ALWAYS_FATAL_IF(gSurfacePlaneClassInfo.ctor == NULL, 535 "Can not find SurfacePlane constructor"); 536} 537 538static void ImageReader_init(JNIEnv* env, jobject thiz, jobject weakThiz, 539 jint width, jint height, jint format, jint maxImages) 540{ 541 status_t res; 542 int nativeFormat; 543 544 ALOGV("%s: width:%d, height: %d, format: 0x%x, maxImages:%d", 545 __FUNCTION__, width, height, format, maxImages); 546 547 nativeFormat = Image_getPixelFormat(env, format); 548 549 sp<BufferQueue> bq = new BufferQueue(); 550 sp<CpuConsumer> consumer = new CpuConsumer(bq, true, maxImages); 551 // TODO: throw dvm exOutOfMemoryError? 552 if (consumer == NULL) { 553 jniThrowRuntimeException(env, "Failed to allocate native CpuConsumer"); 554 return; 555 } 556 557 jclass clazz = env->GetObjectClass(thiz); 558 if (clazz == NULL) { 559 jniThrowRuntimeException(env, "Can't find android/graphics/ImageReader"); 560 return; 561 } 562 sp<JNIImageReaderContext> ctx(new JNIImageReaderContext(env, weakThiz, clazz, maxImages)); 563 ctx->setCpuConsumer(consumer); 564 consumer->setFrameAvailableListener(ctx); 565 ImageReader_setNativeContext(env, thiz, ctx); 566 ctx->setBufferFormat(nativeFormat); 567 ctx->setBufferWidth(width); 568 ctx->setBufferHeight(height); 569 570 // Set the width/height/format to the CpuConsumer 571 res = consumer->setDefaultBufferSize(width, height); 572 if (res != OK) { 573 jniThrowException(env, "java/lang/IllegalStateException", 574 "Failed to set CpuConsumer buffer size"); 575 return; 576 } 577 res = consumer->setDefaultBufferFormat(nativeFormat); 578 if (res != OK) { 579 jniThrowException(env, "java/lang/IllegalStateException", 580 "Failed to set CpuConsumer buffer format"); 581 } 582} 583 584static void ImageReader_close(JNIEnv* env, jobject thiz) 585{ 586 ALOGV("%s:", __FUNCTION__); 587 588 JNIImageReaderContext* const ctx = ImageReader_getContext(env, thiz); 589 if (ctx == NULL) { 590 // ImageReader is already closed. 591 return; 592 } 593 594 CpuConsumer* consumer = ImageReader_getCpuConsumer(env, thiz); 595 if (consumer != NULL) { 596 consumer->abandon(); 597 consumer->setFrameAvailableListener(NULL); 598 } 599 ImageReader_setNativeContext(env, thiz, NULL); 600} 601 602static void ImageReader_imageRelease(JNIEnv* env, jobject thiz, jobject image) 603{ 604 ALOGV("%s:", __FUNCTION__); 605 JNIImageReaderContext* ctx = ImageReader_getContext(env, thiz); 606 if (ctx == NULL) { 607 ALOGW("ImageReader#close called before Image#close, consider calling Image#close first"); 608 return; 609 } 610 611 CpuConsumer* consumer = ctx->getCpuConsumer(); 612 CpuConsumer::LockedBuffer* buffer = Image_getLockedBuffer(env, image); 613 if (!buffer) { 614 ALOGW("Image already released!!!"); 615 return; 616 } 617 consumer->unlockBuffer(*buffer); 618 Image_setBuffer(env, image, NULL); 619 ctx->returnLockedBuffer(buffer); 620} 621 622static jboolean ImageReader_imageSetup(JNIEnv* env, jobject thiz, 623 jobject image) 624{ 625 ALOGV("%s:", __FUNCTION__); 626 JNIImageReaderContext* ctx = ImageReader_getContext(env, thiz); 627 if (ctx == NULL) { 628 jniThrowRuntimeException(env, "ImageReaderContext is not initialized"); 629 return false; 630 } 631 632 CpuConsumer* consumer = ctx->getCpuConsumer(); 633 CpuConsumer::LockedBuffer* buffer = ctx->getLockedBuffer(); 634 if (buffer == NULL) { 635 ALOGE("Unable to acquire a lockedBuffer, very likely client tries to lock more than" 636 "maxImages buffers"); 637 return false; 638 } 639 status_t res = consumer->lockNextBuffer(buffer); 640 if (res != NO_ERROR) { 641 ALOGE("%s Fail to lockNextBuffer with error: %d ", __FUNCTION__, res); 642 return false; 643 } 644 645 646 // Check if the left-top corner of the crop rect is origin, we currently assume this point is 647 // zero, will revist this once this assumption turns out problematic. 648 Point lt = buffer->crop.leftTop(); 649 if (lt.x != 0 || lt.y != 0) { 650 ALOGE("crop left: %d, top = %d", lt.x, lt.y); 651 jniThrowException(env, "java/lang/UnsupportedOperationException", 652 "crop left top corner need to at origin"); 653 } 654 655 // Check if the producer buffer configurations match what ImageReader configured. 656 // We want to fail for the very first image because this case is too bad. 657 int outputWidth = buffer->width; 658 int outputHeight = buffer->height; 659 660 // Correct with/height when crop is set. 661 if (buffer->crop.getWidth() > 0) { 662 outputWidth = buffer->crop.getWidth() + 1; 663 } 664 if (buffer->crop.getHeight() > 0) { 665 outputHeight = buffer->crop.getHeight() + 1; 666 } 667 668 int imageReaderWidth = ctx->getBufferWidth(); 669 int imageReaderHeight = ctx->getBufferHeight(); 670 if (imageReaderWidth != outputWidth 671 || imageReaderHeight != outputHeight) { 672 // Spew warning for now, since MediaCodec decoder has a bug to setup the right crop 673 // TODO: make it throw exception once the decoder bug is fixed. 674 ALOGW("Producer buffer size: %dx%d, doesn't match ImageReader configured size: %dx%d", 675 outputWidth, outputHeight, imageReaderWidth, imageReaderHeight); 676 } 677 678 if (ctx->getBufferFormat() != buffer->format) { 679 // Return the buffer to the queue. 680 consumer->unlockBuffer(*buffer); 681 ctx->returnLockedBuffer(buffer); 682 683 // Throw exception 684 ALOGE("Producer output buffer format: 0x%x, ImageReader configured format: 0x%x", 685 buffer->format, ctx->getBufferFormat()); 686 String8 msg; 687 msg.appendFormat("The producer output buffer format 0x%x doesn't " 688 "match the ImageReader's configured buffer format 0x%x.", 689 buffer->format, ctx->getBufferFormat()); 690 jniThrowException(env, "java/lang/UnsupportedOperationException", 691 msg.string()); 692 return false; 693 } 694 // Set SurfaceImage instance member variables 695 Image_setBuffer(env, image, buffer); 696 env->SetLongField(image, gSurfaceImageClassInfo.mTimestamp, 697 static_cast<jlong>(buffer->timestamp)); 698 699 return true; 700} 701 702static jobject ImageReader_getSurface(JNIEnv* env, jobject thiz) 703{ 704 ALOGV("%s: ", __FUNCTION__); 705 706 CpuConsumer* consumer = ImageReader_getCpuConsumer(env, thiz); 707 if (consumer == NULL) { 708 jniThrowRuntimeException(env, "CpuConsumer is uninitialized"); 709 return NULL; 710 } 711 712 // Wrap the IGBP in a Java-language Surface. 713 return android_view_Surface_createFromIGraphicBufferProducer( 714 env, consumer->getProducerInterface()); 715} 716 717static jobject Image_createSurfacePlane(JNIEnv* env, jobject thiz, int idx) 718{ 719 int rowStride, pixelStride; 720 ALOGV("%s: buffer index: %d", __FUNCTION__, idx); 721 722 CpuConsumer::LockedBuffer* buffer = Image_getLockedBuffer(env, thiz); 723 724 ALOG_ASSERT(buffer != NULL); 725 if (buffer == NULL) { 726 jniThrowException(env, "java/lang/IllegalStateException", "Image was released"); 727 } 728 rowStride = Image_imageGetRowStride(env, buffer, idx); 729 pixelStride = Image_imageGetPixelStride(env, buffer, idx); 730 731 jobject surfPlaneObj = env->NewObject(gSurfacePlaneClassInfo.clazz, 732 gSurfacePlaneClassInfo.ctor, thiz, idx, rowStride, pixelStride); 733 734 return surfPlaneObj; 735} 736 737static jobject Image_getByteBuffer(JNIEnv* env, jobject thiz, int idx) 738{ 739 uint8_t *base = NULL; 740 uint32_t size = 0; 741 jobject byteBuffer; 742 743 ALOGV("%s: buffer index: %d", __FUNCTION__, idx); 744 745 CpuConsumer::LockedBuffer* buffer = Image_getLockedBuffer(env, thiz); 746 747 if (buffer == NULL) { 748 jniThrowException(env, "java/lang/IllegalStateException", "Image was released"); 749 } 750 751 // Create byteBuffer from native buffer 752 Image_getLockedBufferInfo(env, buffer, idx, &base, &size); 753 byteBuffer = env->NewDirectByteBuffer(base, size); 754 // TODO: throw dvm exOutOfMemoryError? 755 if ((byteBuffer == NULL) && (env->ExceptionCheck() == false)) { 756 jniThrowException(env, "java/lang/IllegalStateException", "Failed to allocate ByteBuffer"); 757 } 758 759 return byteBuffer; 760} 761 762} // extern "C" 763 764// ---------------------------------------------------------------------------- 765 766static JNINativeMethod gImageReaderMethods[] = { 767 {"nativeClassInit", "()V", (void*)ImageReader_classInit }, 768 {"nativeInit", "(Ljava/lang/Object;IIII)V", (void*)ImageReader_init }, 769 {"nativeClose", "()V", (void*)ImageReader_close }, 770 {"nativeReleaseImage", "(Landroid/media/Image;)V", (void*)ImageReader_imageRelease }, 771 {"nativeImageSetup", "(Landroid/media/Image;)Z", (void*)ImageReader_imageSetup }, 772 {"nativeGetSurface", "()Landroid/view/Surface;", (void*)ImageReader_getSurface }, 773}; 774 775static JNINativeMethod gImageMethods[] = { 776 {"nativeImageGetBuffer", "(I)Ljava/nio/ByteBuffer;", (void*)Image_getByteBuffer }, 777 {"nativeCreatePlane", "(I)Landroid/media/ImageReader$SurfaceImage$SurfacePlane;", 778 (void*)Image_createSurfacePlane }, 779}; 780 781int register_android_media_ImageReader(JNIEnv *env) { 782 783 int ret1 = AndroidRuntime::registerNativeMethods(env, 784 "android/media/ImageReader", gImageReaderMethods, NELEM(gImageReaderMethods)); 785 786 int ret2 = AndroidRuntime::registerNativeMethods(env, 787 "android/media/ImageReader$SurfaceImage", gImageMethods, NELEM(gImageMethods)); 788 789 return (ret1 || ret2); 790} 791