android_media_ImageReader.cpp revision 31798f33184fd59dd3d3cc55e6373d9f91d220b6
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; 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, bool usingRGBAOverride) 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 if (usingRGBAOverride) { 297 width *= 4; 298 } 299 300 // First check for JPEG transport header at the end of the buffer 301 uint8_t* header = jpegBuffer + (width - sizeof(struct camera3_jpeg_blob)); 302 struct camera3_jpeg_blob *blob = (struct camera3_jpeg_blob*)(header); 303 if (blob->jpeg_blob_id == CAMERA3_JPEG_BLOB_ID) { 304 size = blob->jpeg_size; 305 ALOGV("%s: Jpeg size = %d", __FUNCTION__, size); 306 } 307 308 // failed to find size, default to whole buffer 309 if (size == 0) { 310 /* 311 * This is a problem because not including the JPEG header 312 * means that in certain rare situations a regular JPEG blob 313 * will be misidentified as having a header, in which case 314 * we will get a garbage size value. 315 */ 316 ALOGW("%s: No JPEG header detected, defaulting to size=width=%d", 317 __FUNCTION__, width); 318 size = width; 319 } 320 321 return size; 322} 323 324static bool usingRGBAToJpegOverride(int32_t bufferFormat, int32_t readerCtxFormat) { 325 return readerCtxFormat == HAL_PIXEL_FORMAT_BLOB && bufferFormat == HAL_PIXEL_FORMAT_RGBA_8888; 326} 327 328static int32_t applyFormatOverrides(int32_t bufferFormat, int32_t readerCtxFormat) 329{ 330 // Using HAL_PIXEL_FORMAT_RGBA_8888 gralloc buffers containing JPEGs to get around SW 331 // write limitations for some platforms (b/17379185). 332 if (usingRGBAToJpegOverride(bufferFormat, readerCtxFormat)) { 333 return HAL_PIXEL_FORMAT_BLOB; 334 } 335 return bufferFormat; 336} 337 338static void Image_getLockedBufferInfo(JNIEnv* env, CpuConsumer::LockedBuffer* buffer, int idx, 339 uint8_t **base, uint32_t *size, int32_t readerFormat) 340{ 341 ALOG_ASSERT(buffer != NULL, "Input buffer is NULL!!!"); 342 ALOG_ASSERT(base != NULL, "base is NULL!!!"); 343 ALOG_ASSERT(size != NULL, "size is NULL!!!"); 344 ALOG_ASSERT((idx < IMAGE_READER_MAX_NUM_PLANES) && (idx >= 0)); 345 346 ALOGV("%s: buffer: %p", __FUNCTION__, buffer); 347 348 uint32_t dataSize, ySize, cSize, cStride; 349 uint8_t *cb, *cr; 350 uint8_t *pData = NULL; 351 int bytesPerPixel = 0; 352 353 dataSize = ySize = cSize = cStride = 0; 354 int32_t fmt = buffer->format; 355 356 bool usingRGBAOverride = usingRGBAToJpegOverride(fmt, readerFormat); 357 fmt = applyFormatOverrides(fmt, readerFormat); 358 switch (fmt) { 359 case HAL_PIXEL_FORMAT_YCbCr_420_888: 360 pData = 361 (idx == 0) ? 362 buffer->data : 363 (idx == 1) ? 364 buffer->dataCb : 365 buffer->dataCr; 366 if (idx == 0) { 367 dataSize = buffer->stride * buffer->height; 368 } else { 369 dataSize = buffer->chromaStride * buffer->height / 2; 370 } 371 break; 372 // NV21 373 case HAL_PIXEL_FORMAT_YCrCb_420_SP: 374 cr = buffer->data + (buffer->stride * buffer->height); 375 cb = cr + 1; 376 ySize = buffer->width * buffer->height; 377 cSize = buffer->width * buffer->height / 2; 378 379 pData = 380 (idx == 0) ? 381 buffer->data : 382 (idx == 1) ? 383 cb: 384 cr; 385 386 dataSize = (idx == 0) ? ySize : cSize; 387 break; 388 case HAL_PIXEL_FORMAT_YV12: 389 // Y and C stride need to be 16 pixel aligned. 390 LOG_ALWAYS_FATAL_IF(buffer->stride % 16, 391 "Stride is not 16 pixel aligned %d", buffer->stride); 392 393 ySize = buffer->stride * buffer->height; 394 cStride = ALIGN(buffer->stride / 2, 16); 395 cr = buffer->data + ySize; 396 cSize = cStride * buffer->height / 2; 397 cb = cr + cSize; 398 399 pData = 400 (idx == 0) ? 401 buffer->data : 402 (idx == 1) ? 403 cb : 404 cr; 405 dataSize = (idx == 0) ? ySize : cSize; 406 break; 407 case HAL_PIXEL_FORMAT_Y8: 408 // Single plane, 8bpp. 409 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 410 411 pData = buffer->data; 412 dataSize = buffer->stride * buffer->height; 413 break; 414 case HAL_PIXEL_FORMAT_Y16: 415 bytesPerPixel = 2; 416 // Single plane, 16bpp, strides are specified in pixels, not in bytes 417 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 418 419 pData = buffer->data; 420 dataSize = buffer->stride * buffer->height * bytesPerPixel; 421 break; 422 case HAL_PIXEL_FORMAT_BLOB: 423 // Used for JPEG data, height must be 1, width == size, single plane. 424 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 425 ALOG_ASSERT(buffer->height == 1, "JPEG should has height value %d", buffer->height); 426 427 pData = buffer->data; 428 dataSize = Image_getJpegSize(buffer, usingRGBAOverride); 429 break; 430 case HAL_PIXEL_FORMAT_RAW_SENSOR: 431 // Single plane 16bpp bayer data. 432 bytesPerPixel = 2; 433 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 434 pData = buffer->data; 435 dataSize = buffer->stride * buffer->height * bytesPerPixel; 436 break; 437 case HAL_PIXEL_FORMAT_RAW10: 438 // Single plane 10bpp bayer data. 439 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 440 LOG_ALWAYS_FATAL_IF(buffer->width % 4, 441 "Width is not multiple of 4 %d", buffer->width); 442 LOG_ALWAYS_FATAL_IF(buffer->height % 2, 443 "Height is not even %d", buffer->height); 444 LOG_ALWAYS_FATAL_IF(buffer->stride < (buffer->width * 10 / 8), 445 "stride (%d) should be at least %d", 446 buffer->stride, buffer->width * 10 / 8); 447 pData = buffer->data; 448 dataSize = buffer->stride * buffer->height; 449 break; 450 case HAL_PIXEL_FORMAT_RGBA_8888: 451 case HAL_PIXEL_FORMAT_RGBX_8888: 452 // Single plane, 32bpp. 453 bytesPerPixel = 4; 454 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 455 pData = buffer->data; 456 dataSize = buffer->stride * buffer->height * bytesPerPixel; 457 break; 458 case HAL_PIXEL_FORMAT_RGB_565: 459 // Single plane, 16bpp. 460 bytesPerPixel = 2; 461 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 462 pData = buffer->data; 463 dataSize = buffer->stride * buffer->height * bytesPerPixel; 464 break; 465 case HAL_PIXEL_FORMAT_RGB_888: 466 // Single plane, 24bpp. 467 bytesPerPixel = 3; 468 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 469 pData = buffer->data; 470 dataSize = buffer->stride * buffer->height * bytesPerPixel; 471 break; 472 default: 473 jniThrowExceptionFmt(env, "java/lang/UnsupportedOperationException", 474 "Pixel format: 0x%x is unsupported", fmt); 475 break; 476 } 477 478 *base = pData; 479 *size = dataSize; 480} 481 482static jint Image_imageGetPixelStride(JNIEnv* env, CpuConsumer::LockedBuffer* buffer, int idx, 483 int32_t readerFormat) 484{ 485 ALOGV("%s: buffer index: %d", __FUNCTION__, idx); 486 ALOG_ASSERT((idx < IMAGE_READER_MAX_NUM_PLANES) && (idx >= 0), "Index is out of range:%d", idx); 487 488 int pixelStride = 0; 489 ALOG_ASSERT(buffer != NULL, "buffer is NULL"); 490 491 int32_t fmt = buffer->format; 492 493 fmt = applyFormatOverrides(fmt, readerFormat); 494 495 switch (fmt) { 496 case HAL_PIXEL_FORMAT_YCbCr_420_888: 497 pixelStride = (idx == 0) ? 1 : buffer->chromaStep; 498 break; 499 case HAL_PIXEL_FORMAT_YCrCb_420_SP: 500 pixelStride = (idx == 0) ? 1 : 2; 501 break; 502 case HAL_PIXEL_FORMAT_Y8: 503 // Single plane 8bpp data. 504 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 505 pixelStride; 506 break; 507 case HAL_PIXEL_FORMAT_YV12: 508 pixelStride = 1; 509 break; 510 case HAL_PIXEL_FORMAT_BLOB: 511 case HAL_PIXEL_FORMAT_RAW10: 512 // Blob is used for JPEG data, RAW10 is used for 10-bit raw data, they are 513 // single plane, row and pixel strides are 0. 514 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 515 pixelStride = 0; 516 break; 517 case HAL_PIXEL_FORMAT_Y16: 518 case HAL_PIXEL_FORMAT_RAW_SENSOR: 519 case HAL_PIXEL_FORMAT_RGB_565: 520 // Single plane 16bpp data. 521 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 522 pixelStride = 2; 523 break; 524 case HAL_PIXEL_FORMAT_RGBA_8888: 525 case HAL_PIXEL_FORMAT_RGBX_8888: 526 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 527 pixelStride = 4; 528 break; 529 case HAL_PIXEL_FORMAT_RGB_888: 530 // Single plane, 24bpp. 531 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 532 pixelStride = 3; 533 break; 534 default: 535 jniThrowExceptionFmt(env, "java/lang/UnsupportedOperationException", 536 "Pixel format: 0x%x is unsupported", fmt); 537 break; 538 } 539 540 return pixelStride; 541} 542 543static jint Image_imageGetRowStride(JNIEnv* env, CpuConsumer::LockedBuffer* buffer, int idx, 544 int32_t readerFormat) 545{ 546 ALOGV("%s: buffer index: %d", __FUNCTION__, idx); 547 ALOG_ASSERT((idx < IMAGE_READER_MAX_NUM_PLANES) && (idx >= 0)); 548 549 int rowStride = 0; 550 ALOG_ASSERT(buffer != NULL, "buffer is NULL"); 551 552 int32_t fmt = buffer->format; 553 554 fmt = applyFormatOverrides(fmt, readerFormat); 555 556 switch (fmt) { 557 case HAL_PIXEL_FORMAT_YCbCr_420_888: 558 rowStride = (idx == 0) ? buffer->stride : buffer->chromaStride; 559 break; 560 case HAL_PIXEL_FORMAT_YCrCb_420_SP: 561 rowStride = buffer->width; 562 break; 563 case HAL_PIXEL_FORMAT_YV12: 564 LOG_ALWAYS_FATAL_IF(buffer->stride % 16, 565 "Stride is not 16 pixel aligned %d", buffer->stride); 566 rowStride = (idx == 0) ? buffer->stride : ALIGN(buffer->stride / 2, 16); 567 break; 568 case HAL_PIXEL_FORMAT_BLOB: 569 // Blob is used for JPEG data, RAW10 is used for 10-bit raw data, they are 570 // single plane, row and pixel strides are 0. 571 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 572 rowStride = 0; 573 break; 574 case HAL_PIXEL_FORMAT_RAW10: 575 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 576 rowStride = buffer->stride; 577 break; 578 case HAL_PIXEL_FORMAT_Y8: 579 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 580 LOG_ALWAYS_FATAL_IF(buffer->stride % 16, 581 "Stride is not 16 pixel aligned %d", buffer->stride); 582 rowStride = buffer->stride; 583 break; 584 case HAL_PIXEL_FORMAT_Y16: 585 case HAL_PIXEL_FORMAT_RAW_SENSOR: 586 // In native side, strides are specified in pixels, not in bytes. 587 // Single plane 16bpp bayer data. even width/height, 588 // row stride multiple of 16 pixels (32 bytes) 589 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 590 LOG_ALWAYS_FATAL_IF(buffer->stride % 16, 591 "Stride is not 16 pixel aligned %d", buffer->stride); 592 rowStride = buffer->stride * 2; 593 break; 594 case HAL_PIXEL_FORMAT_RGB_565: 595 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 596 rowStride = buffer->stride * 2; 597 break; 598 case HAL_PIXEL_FORMAT_RGBA_8888: 599 case HAL_PIXEL_FORMAT_RGBX_8888: 600 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 601 rowStride = buffer->stride * 4; 602 break; 603 case HAL_PIXEL_FORMAT_RGB_888: 604 // Single plane, 24bpp. 605 ALOG_ASSERT(idx == 0, "Wrong index: %d", idx); 606 rowStride = buffer->stride * 3; 607 break; 608 default: 609 ALOGE("%s Pixel format: 0x%x is unsupported", __FUNCTION__, fmt); 610 jniThrowException(env, "java/lang/UnsupportedOperationException", 611 "unsupported buffer format"); 612 break; 613 } 614 615 return rowStride; 616} 617 618// ---------------------------------------------------------------------------- 619 620static void ImageReader_classInit(JNIEnv* env, jclass clazz) 621{ 622 ALOGV("%s:", __FUNCTION__); 623 624 jclass imageClazz = env->FindClass("android/media/ImageReader$SurfaceImage"); 625 LOG_ALWAYS_FATAL_IF(imageClazz == NULL, 626 "can't find android/graphics/ImageReader$SurfaceImage"); 627 gSurfaceImageClassInfo.mLockedBuffer = env->GetFieldID( 628 imageClazz, ANDROID_MEDIA_SURFACEIMAGE_BUFFER_JNI_ID, "J"); 629 LOG_ALWAYS_FATAL_IF(gSurfaceImageClassInfo.mLockedBuffer == NULL, 630 "can't find android/graphics/ImageReader.%s", 631 ANDROID_MEDIA_SURFACEIMAGE_BUFFER_JNI_ID); 632 633 gSurfaceImageClassInfo.mTimestamp = env->GetFieldID( 634 imageClazz, ANDROID_MEDIA_SURFACEIMAGE_TS_JNI_ID, "J"); 635 LOG_ALWAYS_FATAL_IF(gSurfaceImageClassInfo.mTimestamp == NULL, 636 "can't find android/graphics/ImageReader.%s", 637 ANDROID_MEDIA_SURFACEIMAGE_TS_JNI_ID); 638 639 gImageReaderClassInfo.mNativeContext = env->GetFieldID( 640 clazz, ANDROID_MEDIA_IMAGEREADER_CTX_JNI_ID, "J"); 641 LOG_ALWAYS_FATAL_IF(gImageReaderClassInfo.mNativeContext == NULL, 642 "can't find android/graphics/ImageReader.%s", 643 ANDROID_MEDIA_IMAGEREADER_CTX_JNI_ID); 644 645 gImageReaderClassInfo.postEventFromNative = env->GetStaticMethodID( 646 clazz, "postEventFromNative", "(Ljava/lang/Object;)V"); 647 LOG_ALWAYS_FATAL_IF(gImageReaderClassInfo.postEventFromNative == NULL, 648 "can't find android/graphics/ImageReader.postEventFromNative"); 649 650 jclass planeClazz = env->FindClass("android/media/ImageReader$SurfaceImage$SurfacePlane"); 651 LOG_ALWAYS_FATAL_IF(planeClazz == NULL, "Can not find SurfacePlane class"); 652 // FindClass only gives a local reference of jclass object. 653 gSurfacePlaneClassInfo.clazz = (jclass) env->NewGlobalRef(planeClazz); 654 gSurfacePlaneClassInfo.ctor = env->GetMethodID(gSurfacePlaneClassInfo.clazz, "<init>", 655 "(Landroid/media/ImageReader$SurfaceImage;III)V"); 656 LOG_ALWAYS_FATAL_IF(gSurfacePlaneClassInfo.ctor == NULL, 657 "Can not find SurfacePlane constructor"); 658} 659 660static void ImageReader_init(JNIEnv* env, jobject thiz, jobject weakThiz, 661 jint width, jint height, jint format, jint maxImages) 662{ 663 status_t res; 664 int nativeFormat; 665 666 ALOGV("%s: width:%d, height: %d, format: 0x%x, maxImages:%d", 667 __FUNCTION__, width, height, format, maxImages); 668 669 nativeFormat = Image_getPixelFormat(env, format); 670 671 sp<IGraphicBufferProducer> gbProducer; 672 sp<IGraphicBufferConsumer> gbConsumer; 673 BufferQueue::createBufferQueue(&gbProducer, &gbConsumer); 674 sp<CpuConsumer> consumer = new CpuConsumer(gbConsumer, maxImages, 675 /*controlledByApp*/true); 676 // TODO: throw dvm exOutOfMemoryError? 677 if (consumer == NULL) { 678 jniThrowRuntimeException(env, "Failed to allocate native CpuConsumer"); 679 return; 680 } 681 682 jclass clazz = env->GetObjectClass(thiz); 683 if (clazz == NULL) { 684 jniThrowRuntimeException(env, "Can't find android/graphics/ImageReader"); 685 return; 686 } 687 sp<JNIImageReaderContext> ctx(new JNIImageReaderContext(env, weakThiz, clazz, maxImages)); 688 ctx->setCpuConsumer(consumer); 689 ctx->setProducer(gbProducer); 690 consumer->setFrameAvailableListener(ctx); 691 ImageReader_setNativeContext(env, thiz, ctx); 692 ctx->setBufferFormat(nativeFormat); 693 ctx->setBufferWidth(width); 694 ctx->setBufferHeight(height); 695 696 // Set the width/height/format to the CpuConsumer 697 res = consumer->setDefaultBufferSize(width, height); 698 if (res != OK) { 699 jniThrowException(env, "java/lang/IllegalStateException", 700 "Failed to set CpuConsumer buffer size"); 701 return; 702 } 703 res = consumer->setDefaultBufferFormat(nativeFormat); 704 if (res != OK) { 705 jniThrowException(env, "java/lang/IllegalStateException", 706 "Failed to set CpuConsumer buffer format"); 707 } 708} 709 710static void ImageReader_close(JNIEnv* env, jobject thiz) 711{ 712 ALOGV("%s:", __FUNCTION__); 713 714 JNIImageReaderContext* const ctx = ImageReader_getContext(env, thiz); 715 if (ctx == NULL) { 716 // ImageReader is already closed. 717 return; 718 } 719 720 CpuConsumer* consumer = ImageReader_getCpuConsumer(env, thiz); 721 if (consumer != NULL) { 722 consumer->abandon(); 723 consumer->setFrameAvailableListener(NULL); 724 } 725 ImageReader_setNativeContext(env, thiz, NULL); 726} 727 728static void ImageReader_imageRelease(JNIEnv* env, jobject thiz, jobject image) 729{ 730 ALOGV("%s:", __FUNCTION__); 731 JNIImageReaderContext* ctx = ImageReader_getContext(env, thiz); 732 if (ctx == NULL) { 733 ALOGW("ImageReader#close called before Image#close, consider calling Image#close first"); 734 return; 735 } 736 737 CpuConsumer* consumer = ctx->getCpuConsumer(); 738 CpuConsumer::LockedBuffer* buffer = Image_getLockedBuffer(env, image); 739 if (!buffer) { 740 ALOGW("Image already released!!!"); 741 return; 742 } 743 consumer->unlockBuffer(*buffer); 744 Image_setBuffer(env, image, NULL); 745 ctx->returnLockedBuffer(buffer); 746} 747 748static jint ImageReader_imageSetup(JNIEnv* env, jobject thiz, 749 jobject image) 750{ 751 ALOGV("%s:", __FUNCTION__); 752 JNIImageReaderContext* ctx = ImageReader_getContext(env, thiz); 753 if (ctx == NULL) { 754 jniThrowRuntimeException(env, "ImageReaderContext is not initialized"); 755 return -1; 756 } 757 758 CpuConsumer* consumer = ctx->getCpuConsumer(); 759 CpuConsumer::LockedBuffer* buffer = ctx->getLockedBuffer(); 760 if (buffer == NULL) { 761 ALOGW("Unable to acquire a lockedBuffer, very likely client tries to lock more than" 762 " maxImages buffers"); 763 return ACQUIRE_MAX_IMAGES; 764 } 765 status_t res = consumer->lockNextBuffer(buffer); 766 if (res != NO_ERROR) { 767 ctx->returnLockedBuffer(buffer); 768 if (res != BAD_VALUE /*no buffers*/) { 769 if (res == NOT_ENOUGH_DATA) { 770 return ACQUIRE_MAX_IMAGES; 771 } else { 772 ALOGE("%s Fail to lockNextBuffer with error: %d ", 773 __FUNCTION__, res); 774 jniThrowExceptionFmt(env, "java/lang/AssertionError", 775 "Unknown error (%d) when we tried to lock buffer.", 776 res); 777 } 778 } 779 return ACQUIRE_NO_BUFFERS; 780 } 781 782 if (buffer->format == HAL_PIXEL_FORMAT_YCrCb_420_SP) { 783 jniThrowException(env, "java/lang/UnsupportedOperationException", 784 "NV21 format is not supported by ImageReader"); 785 return -1; 786 } 787 788 // Check if the left-top corner of the crop rect is origin, we currently assume this point is 789 // zero, will revist this once this assumption turns out problematic. 790 Point lt = buffer->crop.leftTop(); 791 if (lt.x != 0 || lt.y != 0) { 792 jniThrowExceptionFmt(env, "java/lang/UnsupportedOperationException", 793 "crop left top corner [%d, %d] need to be at origin", lt.x, lt.y); 794 return -1; 795 } 796 797 // Check if the producer buffer configurations match what ImageReader configured. 798 // We want to fail for the very first image because this case is too bad. 799 int outputWidth = buffer->width; 800 int outputHeight = buffer->height; 801 802 // Correct width/height when crop is set. 803 if (!buffer->crop.isEmpty()) { 804 outputWidth = buffer->crop.getWidth(); 805 outputHeight = buffer->crop.getHeight(); 806 } 807 808 int imgReaderFmt = ctx->getBufferFormat(); 809 int imageReaderWidth = ctx->getBufferWidth(); 810 int imageReaderHeight = ctx->getBufferHeight(); 811 if ((buffer->format != HAL_PIXEL_FORMAT_BLOB) && (imgReaderFmt != HAL_PIXEL_FORMAT_BLOB) && 812 (imageReaderWidth != outputWidth || imageReaderHeight > outputHeight)) { 813 /** 814 * For video decoder, the buffer height is actually the vertical stride, 815 * which is always >= actual image height. For future, decoder need provide 816 * right crop rectangle to CpuConsumer to indicate the actual image height, 817 * see bug 9563986. After this bug is fixed, we can enforce the height equal 818 * check. Right now, only make sure buffer height is no less than ImageReader 819 * height. 820 */ 821 jniThrowExceptionFmt(env, "java/lang/IllegalStateException", 822 "Producer buffer size: %dx%d, doesn't match ImageReader configured size: %dx%d", 823 outputWidth, outputHeight, imageReaderWidth, imageReaderHeight); 824 return -1; 825 } 826 827 int bufFmt = buffer->format; 828 if (imgReaderFmt != bufFmt) { 829 830 if (imgReaderFmt == HAL_PIXEL_FORMAT_YCbCr_420_888 && (bufFmt == 831 HAL_PIXEL_FORMAT_YCrCb_420_SP || bufFmt == HAL_PIXEL_FORMAT_YV12)) { 832 // Special casing for when producer switches to a format compatible with flexible YUV 833 // (HAL_PIXEL_FORMAT_YCbCr_420_888). 834 ctx->setBufferFormat(bufFmt); 835 ALOGD("%s: Overriding buffer format YUV_420_888 to %x.", __FUNCTION__, bufFmt); 836 } else if (imgReaderFmt == HAL_PIXEL_FORMAT_BLOB && bufFmt == HAL_PIXEL_FORMAT_RGBA_8888) { 837 // Using HAL_PIXEL_FORMAT_RGBA_8888 gralloc buffers containing JPEGs to get around SW 838 // write limitations for (b/17379185). 839 ALOGD("%s: Receiving JPEG in HAL_PIXEL_FORMAT_RGBA_8888 buffer.", __FUNCTION__); 840 } else { 841 // Return the buffer to the queue. 842 consumer->unlockBuffer(*buffer); 843 ctx->returnLockedBuffer(buffer); 844 845 // Throw exception 846 ALOGE("Producer output buffer format: 0x%x, ImageReader configured format: 0x%x", 847 buffer->format, ctx->getBufferFormat()); 848 String8 msg; 849 msg.appendFormat("The producer output buffer format 0x%x doesn't " 850 "match the ImageReader's configured buffer format 0x%x.", 851 buffer->format, ctx->getBufferFormat()); 852 jniThrowException(env, "java/lang/UnsupportedOperationException", 853 msg.string()); 854 return -1; 855 } 856 } 857 // Set SurfaceImage instance member variables 858 Image_setBuffer(env, image, buffer); 859 env->SetLongField(image, gSurfaceImageClassInfo.mTimestamp, 860 static_cast<jlong>(buffer->timestamp)); 861 862 return ACQUIRE_SUCCESS; 863} 864 865static jobject ImageReader_getSurface(JNIEnv* env, jobject thiz) 866{ 867 ALOGV("%s: ", __FUNCTION__); 868 869 IGraphicBufferProducer* gbp = ImageReader_getProducer(env, thiz); 870 if (gbp == NULL) { 871 jniThrowRuntimeException(env, "CpuConsumer is uninitialized"); 872 return NULL; 873 } 874 875 // Wrap the IGBP in a Java-language Surface. 876 return android_view_Surface_createFromIGraphicBufferProducer(env, gbp); 877} 878 879static jobject Image_createSurfacePlane(JNIEnv* env, jobject thiz, int idx, int readerFormat) 880{ 881 int rowStride, pixelStride; 882 ALOGV("%s: buffer index: %d", __FUNCTION__, idx); 883 884 CpuConsumer::LockedBuffer* buffer = Image_getLockedBuffer(env, thiz); 885 886 ALOG_ASSERT(buffer != NULL); 887 if (buffer == NULL) { 888 jniThrowException(env, "java/lang/IllegalStateException", "Image was released"); 889 } 890 891 readerFormat = Image_getPixelFormat(env, readerFormat); 892 893 rowStride = Image_imageGetRowStride(env, buffer, idx, readerFormat); 894 pixelStride = Image_imageGetPixelStride(env, buffer, idx, readerFormat); 895 896 jobject surfPlaneObj = env->NewObject(gSurfacePlaneClassInfo.clazz, 897 gSurfacePlaneClassInfo.ctor, thiz, idx, rowStride, pixelStride); 898 899 return surfPlaneObj; 900} 901 902static jobject Image_getByteBuffer(JNIEnv* env, jobject thiz, int idx, int readerFormat) 903{ 904 uint8_t *base = NULL; 905 uint32_t size = 0; 906 jobject byteBuffer; 907 908 ALOGV("%s: buffer index: %d", __FUNCTION__, idx); 909 910 CpuConsumer::LockedBuffer* buffer = Image_getLockedBuffer(env, thiz); 911 912 if (buffer == NULL) { 913 jniThrowException(env, "java/lang/IllegalStateException", "Image was released"); 914 } 915 916 readerFormat = Image_getPixelFormat(env, readerFormat); 917 918 // Create byteBuffer from native buffer 919 Image_getLockedBufferInfo(env, buffer, idx, &base, &size, readerFormat); 920 921 if (size > static_cast<uint32_t>(INT32_MAX)) { 922 // Byte buffer have 'int capacity', so check the range 923 jniThrowExceptionFmt(env, "java/lang/IllegalStateException", 924 "Size too large for bytebuffer capacity %" PRIu32, size); 925 return NULL; 926 } 927 928 byteBuffer = env->NewDirectByteBuffer(base, size); 929 // TODO: throw dvm exOutOfMemoryError? 930 if ((byteBuffer == NULL) && (env->ExceptionCheck() == false)) { 931 jniThrowException(env, "java/lang/IllegalStateException", "Failed to allocate ByteBuffer"); 932 } 933 934 return byteBuffer; 935} 936 937} // extern "C" 938 939// ---------------------------------------------------------------------------- 940 941static JNINativeMethod gImageReaderMethods[] = { 942 {"nativeClassInit", "()V", (void*)ImageReader_classInit }, 943 {"nativeInit", "(Ljava/lang/Object;IIII)V", (void*)ImageReader_init }, 944 {"nativeClose", "()V", (void*)ImageReader_close }, 945 {"nativeReleaseImage", "(Landroid/media/Image;)V", (void*)ImageReader_imageRelease }, 946 {"nativeImageSetup", "(Landroid/media/Image;)I", (void*)ImageReader_imageSetup }, 947 {"nativeGetSurface", "()Landroid/view/Surface;", (void*)ImageReader_getSurface }, 948}; 949 950static JNINativeMethod gImageMethods[] = { 951 {"nativeImageGetBuffer", "(II)Ljava/nio/ByteBuffer;", (void*)Image_getByteBuffer }, 952 {"nativeCreatePlane", "(II)Landroid/media/ImageReader$SurfaceImage$SurfacePlane;", 953 (void*)Image_createSurfacePlane }, 954}; 955 956int register_android_media_ImageReader(JNIEnv *env) { 957 958 int ret1 = AndroidRuntime::registerNativeMethods(env, 959 "android/media/ImageReader", gImageReaderMethods, NELEM(gImageReaderMethods)); 960 961 int ret2 = AndroidRuntime::registerNativeMethods(env, 962 "android/media/ImageReader$SurfaceImage", gImageMethods, NELEM(gImageMethods)); 963 964 return (ret1 || ret2); 965} 966