| #define LOG_TAG "BitmapFactory" |
| |
| #include "BitmapFactory.h" |
| #include "NinePatchPeeker.h" |
| #include "SkFrontBufferedStream.h" |
| #include "SkImageDecoder.h" |
| #include "SkMath.h" |
| #include "SkPixelRef.h" |
| #include "SkStream.h" |
| #include "SkTemplates.h" |
| #include "SkUtils.h" |
| #include "CreateJavaOutputStreamAdaptor.h" |
| #include "AutoDecodeCancel.h" |
| #include "Utils.h" |
| #include "JNIHelp.h" |
| #include "GraphicsJNI.h" |
| |
| #include <android_runtime/AndroidRuntime.h> |
| #include <androidfw/Asset.h> |
| #include <androidfw/ResourceTypes.h> |
| #include <cutils/compiler.h> |
| #include <netinet/in.h> |
| #include <stdio.h> |
| #include <sys/mman.h> |
| #include <sys/stat.h> |
| |
| jfieldID gOptions_justBoundsFieldID; |
| jfieldID gOptions_sampleSizeFieldID; |
| jfieldID gOptions_configFieldID; |
| jfieldID gOptions_premultipliedFieldID; |
| jfieldID gOptions_mutableFieldID; |
| jfieldID gOptions_ditherFieldID; |
| jfieldID gOptions_preferQualityOverSpeedFieldID; |
| jfieldID gOptions_scaledFieldID; |
| jfieldID gOptions_densityFieldID; |
| jfieldID gOptions_screenDensityFieldID; |
| jfieldID gOptions_targetDensityFieldID; |
| jfieldID gOptions_widthFieldID; |
| jfieldID gOptions_heightFieldID; |
| jfieldID gOptions_mimeFieldID; |
| jfieldID gOptions_mCancelID; |
| jfieldID gOptions_bitmapFieldID; |
| |
| jfieldID gBitmap_nativeBitmapFieldID; |
| jfieldID gBitmap_ninePatchInsetsFieldID; |
| |
| jclass gInsetStruct_class; |
| jmethodID gInsetStruct_constructorMethodID; |
| |
| using namespace android; |
| |
| static inline int32_t validOrNeg1(bool isValid, int32_t value) { |
| // return isValid ? value : -1; |
| SkASSERT((int)isValid == 0 || (int)isValid == 1); |
| return ((int32_t)isValid - 1) | value; |
| } |
| |
| jstring getMimeTypeString(JNIEnv* env, SkImageDecoder::Format format) { |
| static const struct { |
| SkImageDecoder::Format fFormat; |
| const char* fMimeType; |
| } gMimeTypes[] = { |
| { SkImageDecoder::kBMP_Format, "image/bmp" }, |
| { SkImageDecoder::kGIF_Format, "image/gif" }, |
| { SkImageDecoder::kICO_Format, "image/x-ico" }, |
| { SkImageDecoder::kJPEG_Format, "image/jpeg" }, |
| { SkImageDecoder::kPNG_Format, "image/png" }, |
| { SkImageDecoder::kWEBP_Format, "image/webp" }, |
| { SkImageDecoder::kWBMP_Format, "image/vnd.wap.wbmp" } |
| }; |
| |
| const char* cstr = NULL; |
| for (size_t i = 0; i < SK_ARRAY_COUNT(gMimeTypes); i++) { |
| if (gMimeTypes[i].fFormat == format) { |
| cstr = gMimeTypes[i].fMimeType; |
| break; |
| } |
| } |
| |
| jstring jstr = NULL; |
| if (cstr != NULL) { |
| // NOTE: Caller should env->ExceptionCheck() for OOM |
| // (can't check for NULL as it's a valid return value) |
| jstr = env->NewStringUTF(cstr); |
| } |
| return jstr; |
| } |
| |
| static bool optionsJustBounds(JNIEnv* env, jobject options) { |
| return options != NULL && env->GetBooleanField(options, gOptions_justBoundsFieldID); |
| } |
| |
| static void scaleDivRange(int32_t* divs, int count, float scale, int maxValue) { |
| for (int i = 0; i < count; i++) { |
| divs[i] = int32_t(divs[i] * scale + 0.5f); |
| if (i > 0 && divs[i] == divs[i - 1]) { |
| divs[i]++; // avoid collisions |
| } |
| } |
| |
| if (CC_UNLIKELY(divs[count - 1] > maxValue)) { |
| // if the collision avoidance above put some divs outside the bounds of the bitmap, |
| // slide outer stretchable divs inward to stay within bounds |
| int highestAvailable = maxValue; |
| for (int i = count - 1; i >= 0; i--) { |
| divs[i] = highestAvailable; |
| if (i > 0 && divs[i] <= divs[i-1]){ |
| // keep shifting |
| highestAvailable = divs[i] - 1; |
| } else { |
| break; |
| } |
| } |
| } |
| } |
| |
| static void scaleNinePatchChunk(android::Res_png_9patch* chunk, float scale, |
| int scaledWidth, int scaledHeight) { |
| chunk->paddingLeft = int(chunk->paddingLeft * scale + 0.5f); |
| chunk->paddingTop = int(chunk->paddingTop * scale + 0.5f); |
| chunk->paddingRight = int(chunk->paddingRight * scale + 0.5f); |
| chunk->paddingBottom = int(chunk->paddingBottom * scale + 0.5f); |
| |
| scaleDivRange(chunk->getXDivs(), chunk->numXDivs, scale, scaledWidth); |
| scaleDivRange(chunk->getYDivs(), chunk->numYDivs, scale, scaledHeight); |
| } |
| |
| static SkColorType colorTypeForScaledOutput(SkColorType colorType) { |
| switch (colorType) { |
| case kUnknown_SkColorType: |
| case kIndex_8_SkColorType: |
| return kN32_SkColorType; |
| default: |
| break; |
| } |
| return colorType; |
| } |
| |
| class ScaleCheckingAllocator : public SkBitmap::HeapAllocator { |
| public: |
| ScaleCheckingAllocator(float scale, int size) |
| : mScale(scale), mSize(size) { |
| } |
| |
| virtual bool allocPixelRef(SkBitmap* bitmap, SkColorTable* ctable) { |
| // accounts for scale in final allocation, using eventual size and config |
| const int bytesPerPixel = SkColorTypeBytesPerPixel( |
| colorTypeForScaledOutput(bitmap->colorType())); |
| const int requestedSize = bytesPerPixel * |
| int(bitmap->width() * mScale + 0.5f) * |
| int(bitmap->height() * mScale + 0.5f); |
| if (requestedSize > mSize) { |
| ALOGW("bitmap for alloc reuse (%d bytes) can't fit scaled bitmap (%d bytes)", |
| mSize, requestedSize); |
| return false; |
| } |
| return SkBitmap::HeapAllocator::allocPixelRef(bitmap, ctable); |
| } |
| private: |
| const float mScale; |
| const int mSize; |
| }; |
| |
| class RecyclingPixelAllocator : public SkBitmap::Allocator { |
| public: |
| RecyclingPixelAllocator(SkPixelRef* pixelRef, unsigned int size) |
| : mPixelRef(pixelRef), mSize(size) { |
| SkSafeRef(mPixelRef); |
| } |
| |
| ~RecyclingPixelAllocator() { |
| SkSafeUnref(mPixelRef); |
| } |
| |
| virtual bool allocPixelRef(SkBitmap* bitmap, SkColorTable* ctable) { |
| const SkImageInfo& info = bitmap->info(); |
| if (info.fColorType == kUnknown_SkColorType) { |
| ALOGW("unable to reuse a bitmap as the target has an unknown bitmap configuration"); |
| return false; |
| } |
| |
| const int64_t size64 = info.getSafeSize64(bitmap->rowBytes()); |
| if (!sk_64_isS32(size64)) { |
| ALOGW("bitmap is too large"); |
| return false; |
| } |
| |
| const size_t size = sk_64_asS32(size64); |
| if (size > mSize) { |
| ALOGW("bitmap marked for reuse (%d bytes) can't fit new bitmap (%d bytes)", |
| mSize, size); |
| return false; |
| } |
| |
| // Create a new pixelref with the new ctable that wraps the previous pixelref |
| SkPixelRef* pr = new AndroidPixelRef(*static_cast<AndroidPixelRef*>(mPixelRef), |
| info, bitmap->rowBytes(), ctable); |
| |
| bitmap->setPixelRef(pr)->unref(); |
| // since we're already allocated, we lockPixels right away |
| // HeapAllocator/JavaPixelAllocator behaves this way too |
| bitmap->lockPixels(); |
| return true; |
| } |
| |
| private: |
| SkPixelRef* const mPixelRef; |
| const unsigned int mSize; |
| }; |
| |
| static jobject doDecode(JNIEnv* env, SkStreamRewindable* stream, jobject padding, jobject options) { |
| |
| int sampleSize = 1; |
| |
| SkImageDecoder::Mode decodeMode = SkImageDecoder::kDecodePixels_Mode; |
| SkColorType prefColorType = kN32_SkColorType; |
| |
| bool doDither = true; |
| bool isMutable = false; |
| float scale = 1.0f; |
| bool preferQualityOverSpeed = false; |
| bool requireUnpremultiplied = false; |
| |
| jobject javaBitmap = NULL; |
| |
| if (options != NULL) { |
| sampleSize = env->GetIntField(options, gOptions_sampleSizeFieldID); |
| if (optionsJustBounds(env, options)) { |
| decodeMode = SkImageDecoder::kDecodeBounds_Mode; |
| } |
| |
| // initialize these, in case we fail later on |
| env->SetIntField(options, gOptions_widthFieldID, -1); |
| env->SetIntField(options, gOptions_heightFieldID, -1); |
| env->SetObjectField(options, gOptions_mimeFieldID, 0); |
| |
| jobject jconfig = env->GetObjectField(options, gOptions_configFieldID); |
| prefColorType = GraphicsJNI::getNativeBitmapColorType(env, jconfig); |
| isMutable = env->GetBooleanField(options, gOptions_mutableFieldID); |
| doDither = env->GetBooleanField(options, gOptions_ditherFieldID); |
| preferQualityOverSpeed = env->GetBooleanField(options, |
| gOptions_preferQualityOverSpeedFieldID); |
| requireUnpremultiplied = !env->GetBooleanField(options, gOptions_premultipliedFieldID); |
| javaBitmap = env->GetObjectField(options, gOptions_bitmapFieldID); |
| |
| if (env->GetBooleanField(options, gOptions_scaledFieldID)) { |
| const int density = env->GetIntField(options, gOptions_densityFieldID); |
| const int targetDensity = env->GetIntField(options, gOptions_targetDensityFieldID); |
| const int screenDensity = env->GetIntField(options, gOptions_screenDensityFieldID); |
| if (density != 0 && targetDensity != 0 && density != screenDensity) { |
| scale = (float) targetDensity / density; |
| } |
| } |
| } |
| |
| const bool willScale = scale != 1.0f; |
| |
| SkImageDecoder* decoder = SkImageDecoder::Factory(stream); |
| if (decoder == NULL) { |
| return nullObjectReturn("SkImageDecoder::Factory returned null"); |
| } |
| |
| decoder->setSampleSize(sampleSize); |
| decoder->setDitherImage(doDither); |
| decoder->setPreferQualityOverSpeed(preferQualityOverSpeed); |
| decoder->setRequireUnpremultipliedColors(requireUnpremultiplied); |
| |
| SkBitmap* outputBitmap = NULL; |
| unsigned int existingBufferSize = 0; |
| if (javaBitmap != NULL) { |
| outputBitmap = (SkBitmap*) env->GetLongField(javaBitmap, gBitmap_nativeBitmapFieldID); |
| if (outputBitmap->isImmutable()) { |
| ALOGW("Unable to reuse an immutable bitmap as an image decoder target."); |
| javaBitmap = NULL; |
| outputBitmap = NULL; |
| } else { |
| existingBufferSize = GraphicsJNI::getBitmapAllocationByteCount(env, javaBitmap); |
| } |
| } |
| |
| SkAutoTDelete<SkBitmap> adb(outputBitmap == NULL ? new SkBitmap : NULL); |
| if (outputBitmap == NULL) outputBitmap = adb.get(); |
| |
| NinePatchPeeker peeker(decoder); |
| decoder->setPeeker(&peeker); |
| |
| JavaPixelAllocator javaAllocator(env); |
| RecyclingPixelAllocator recyclingAllocator(outputBitmap->pixelRef(), existingBufferSize); |
| ScaleCheckingAllocator scaleCheckingAllocator(scale, existingBufferSize); |
| SkBitmap::Allocator* outputAllocator = (javaBitmap != NULL) ? |
| (SkBitmap::Allocator*)&recyclingAllocator : (SkBitmap::Allocator*)&javaAllocator; |
| if (decodeMode != SkImageDecoder::kDecodeBounds_Mode) { |
| if (!willScale) { |
| // If the java allocator is being used to allocate the pixel memory, the decoder |
| // need not write zeroes, since the memory is initialized to 0. |
| decoder->setSkipWritingZeroes(outputAllocator == &javaAllocator); |
| decoder->setAllocator(outputAllocator); |
| } else if (javaBitmap != NULL) { |
| // check for eventual scaled bounds at allocation time, so we don't decode the bitmap |
| // only to find the scaled result too large to fit in the allocation |
| decoder->setAllocator(&scaleCheckingAllocator); |
| } |
| } |
| |
| // Only setup the decoder to be deleted after its stack-based, refcounted |
| // components (allocators, peekers, etc) are declared. This prevents RefCnt |
| // asserts from firing due to the order objects are deleted from the stack. |
| SkAutoTDelete<SkImageDecoder> add(decoder); |
| |
| AutoDecoderCancel adc(options, decoder); |
| |
| // To fix the race condition in case "requestCancelDecode" |
| // happens earlier than AutoDecoderCancel object is added |
| // to the gAutoDecoderCancelMutex linked list. |
| if (options != NULL && env->GetBooleanField(options, gOptions_mCancelID)) { |
| return nullObjectReturn("gOptions_mCancelID"); |
| } |
| |
| SkBitmap decodingBitmap; |
| if (decoder->decode(stream, &decodingBitmap, prefColorType, decodeMode) |
| != SkImageDecoder::kSuccess) { |
| return nullObjectReturn("decoder->decode returned false"); |
| } |
| |
| int scaledWidth = decodingBitmap.width(); |
| int scaledHeight = decodingBitmap.height(); |
| |
| if (willScale && decodeMode != SkImageDecoder::kDecodeBounds_Mode) { |
| scaledWidth = int(scaledWidth * scale + 0.5f); |
| scaledHeight = int(scaledHeight * scale + 0.5f); |
| } |
| |
| // update options (if any) |
| if (options != NULL) { |
| jstring mimeType = getMimeTypeString(env, decoder->getFormat()); |
| if (env->ExceptionCheck()) { |
| return nullObjectReturn("OOM in getMimeTypeString()"); |
| } |
| env->SetIntField(options, gOptions_widthFieldID, scaledWidth); |
| env->SetIntField(options, gOptions_heightFieldID, scaledHeight); |
| env->SetObjectField(options, gOptions_mimeFieldID, mimeType); |
| } |
| |
| // if we're in justBounds mode, return now (skip the java bitmap) |
| if (decodeMode == SkImageDecoder::kDecodeBounds_Mode) { |
| return NULL; |
| } |
| |
| jbyteArray ninePatchChunk = NULL; |
| if (peeker.mPatch != NULL) { |
| if (willScale) { |
| scaleNinePatchChunk(peeker.mPatch, scale, scaledWidth, scaledHeight); |
| } |
| |
| size_t ninePatchArraySize = peeker.mPatch->serializedSize(); |
| ninePatchChunk = env->NewByteArray(ninePatchArraySize); |
| if (ninePatchChunk == NULL) { |
| return nullObjectReturn("ninePatchChunk == null"); |
| } |
| |
| jbyte* array = (jbyte*) env->GetPrimitiveArrayCritical(ninePatchChunk, NULL); |
| if (array == NULL) { |
| return nullObjectReturn("primitive array == null"); |
| } |
| |
| memcpy(array, peeker.mPatch, peeker.mPatchSize); |
| env->ReleasePrimitiveArrayCritical(ninePatchChunk, array, 0); |
| } |
| |
| jobject ninePatchInsets = NULL; |
| if (peeker.mHasInsets) { |
| ninePatchInsets = env->NewObject(gInsetStruct_class, gInsetStruct_constructorMethodID, |
| peeker.mOpticalInsets[0], peeker.mOpticalInsets[1], peeker.mOpticalInsets[2], peeker.mOpticalInsets[3], |
| peeker.mOutlineInsets[0], peeker.mOutlineInsets[1], peeker.mOutlineInsets[2], peeker.mOutlineInsets[3], |
| peeker.mOutlineRadius, peeker.mOutlineAlpha, scale); |
| if (ninePatchInsets == NULL) { |
| return nullObjectReturn("nine patch insets == null"); |
| } |
| if (javaBitmap != NULL) { |
| env->SetObjectField(javaBitmap, gBitmap_ninePatchInsetsFieldID, ninePatchInsets); |
| } |
| } |
| |
| if (willScale) { |
| // This is weird so let me explain: we could use the scale parameter |
| // directly, but for historical reasons this is how the corresponding |
| // Dalvik code has always behaved. We simply recreate the behavior here. |
| // The result is slightly different from simply using scale because of |
| // the 0.5f rounding bias applied when computing the target image size |
| const float sx = scaledWidth / float(decodingBitmap.width()); |
| const float sy = scaledHeight / float(decodingBitmap.height()); |
| |
| // TODO: avoid copying when scaled size equals decodingBitmap size |
| SkColorType colorType = colorTypeForScaledOutput(decodingBitmap.colorType()); |
| // FIXME: If the alphaType is kUnpremul and the image has alpha, the |
| // colors may not be correct, since Skia does not yet support drawing |
| // to/from unpremultiplied bitmaps. |
| outputBitmap->setInfo(SkImageInfo::Make(scaledWidth, scaledHeight, |
| colorType, decodingBitmap.alphaType())); |
| if (!outputBitmap->allocPixels(outputAllocator, NULL)) { |
| return nullObjectReturn("allocation failed for scaled bitmap"); |
| } |
| |
| // If outputBitmap's pixels are newly allocated by Java, there is no need |
| // to erase to 0, since the pixels were initialized to 0. |
| if (outputAllocator != &javaAllocator) { |
| outputBitmap->eraseColor(0); |
| } |
| |
| SkPaint paint; |
| paint.setFilterLevel(SkPaint::kLow_FilterLevel); |
| |
| SkCanvas canvas(*outputBitmap); |
| canvas.scale(sx, sy); |
| canvas.drawBitmap(decodingBitmap, 0.0f, 0.0f, &paint); |
| } else { |
| outputBitmap->swap(decodingBitmap); |
| } |
| |
| if (padding) { |
| if (peeker.mPatch != NULL) { |
| GraphicsJNI::set_jrect(env, padding, |
| peeker.mPatch->paddingLeft, peeker.mPatch->paddingTop, |
| peeker.mPatch->paddingRight, peeker.mPatch->paddingBottom); |
| } else { |
| GraphicsJNI::set_jrect(env, padding, -1, -1, -1, -1); |
| } |
| } |
| |
| // if we get here, we're in kDecodePixels_Mode and will therefore |
| // already have a pixelref installed. |
| if (outputBitmap->pixelRef() == NULL) { |
| return nullObjectReturn("Got null SkPixelRef"); |
| } |
| |
| if (!isMutable && javaBitmap == NULL) { |
| // promise we will never change our pixels (great for sharing and pictures) |
| outputBitmap->setImmutable(); |
| } |
| |
| // detach bitmap from its autodeleter, since we want to own it now |
| adb.detach(); |
| |
| if (javaBitmap != NULL) { |
| bool isPremultiplied = !requireUnpremultiplied; |
| GraphicsJNI::reinitBitmap(env, javaBitmap, outputBitmap, isPremultiplied); |
| outputBitmap->notifyPixelsChanged(); |
| // If a java bitmap was passed in for reuse, pass it back |
| return javaBitmap; |
| } |
| |
| int bitmapCreateFlags = 0x0; |
| if (isMutable) bitmapCreateFlags |= GraphicsJNI::kBitmapCreateFlag_Mutable; |
| if (!requireUnpremultiplied) bitmapCreateFlags |= GraphicsJNI::kBitmapCreateFlag_Premultiplied; |
| |
| // now create the java bitmap |
| return GraphicsJNI::createBitmap(env, outputBitmap, javaAllocator.getStorageObj(), |
| bitmapCreateFlags, ninePatchChunk, ninePatchInsets, -1); |
| } |
| |
| // Need to buffer enough input to be able to rewind as much as might be read by a decoder |
| // trying to determine the stream's format. Currently the most is 64, read by |
| // SkImageDecoder_libwebp. |
| // FIXME: Get this number from SkImageDecoder |
| #define BYTES_TO_BUFFER 64 |
| |
| static jobject nativeDecodeStream(JNIEnv* env, jobject clazz, jobject is, jbyteArray storage, |
| jobject padding, jobject options) { |
| |
| jobject bitmap = NULL; |
| SkAutoTUnref<SkStream> stream(CreateJavaInputStreamAdaptor(env, is, storage)); |
| |
| if (stream.get()) { |
| SkAutoTUnref<SkStreamRewindable> bufferedStream( |
| SkFrontBufferedStream::Create(stream, BYTES_TO_BUFFER)); |
| SkASSERT(bufferedStream.get() != NULL); |
| bitmap = doDecode(env, bufferedStream, padding, options); |
| } |
| return bitmap; |
| } |
| |
| static jobject nativeDecodeFileDescriptor(JNIEnv* env, jobject clazz, jobject fileDescriptor, |
| jobject padding, jobject bitmapFactoryOptions) { |
| |
| NPE_CHECK_RETURN_ZERO(env, fileDescriptor); |
| |
| int descriptor = jniGetFDFromFileDescriptor(env, fileDescriptor); |
| |
| struct stat fdStat; |
| if (fstat(descriptor, &fdStat) == -1) { |
| doThrowIOE(env, "broken file descriptor"); |
| return nullObjectReturn("fstat return -1"); |
| } |
| |
| // Restore the descriptor's offset on exiting this function. Even though |
| // we dup the descriptor, both the original and dup refer to the same open |
| // file description and changes to the file offset in one impact the other. |
| AutoFDSeek autoRestore(descriptor); |
| |
| // Duplicate the descriptor here to prevent leaking memory. A leak occurs |
| // if we only close the file descriptor and not the file object it is used to |
| // create. If we don't explicitly clean up the file (which in turn closes the |
| // descriptor) the buffers allocated internally by fseek will be leaked. |
| int dupDescriptor = dup(descriptor); |
| |
| FILE* file = fdopen(dupDescriptor, "r"); |
| if (file == NULL) { |
| // cleanup the duplicated descriptor since it will not be closed when the |
| // file is cleaned up (fclose). |
| close(dupDescriptor); |
| return nullObjectReturn("Could not open file"); |
| } |
| |
| SkAutoTUnref<SkFILEStream> fileStream(new SkFILEStream(file, |
| SkFILEStream::kCallerPasses_Ownership)); |
| |
| // Use a buffered stream. Although an SkFILEStream can be rewound, this |
| // ensures that SkImageDecoder::Factory never rewinds beyond the |
| // current position of the file descriptor. |
| SkAutoTUnref<SkStreamRewindable> stream(SkFrontBufferedStream::Create(fileStream, |
| BYTES_TO_BUFFER)); |
| |
| return doDecode(env, stream, padding, bitmapFactoryOptions); |
| } |
| |
| static jobject nativeDecodeAsset(JNIEnv* env, jobject clazz, jlong native_asset, |
| jobject padding, jobject options) { |
| |
| Asset* asset = reinterpret_cast<Asset*>(native_asset); |
| // since we know we'll be done with the asset when we return, we can |
| // just use a simple wrapper |
| SkAutoTUnref<SkStreamRewindable> stream(new AssetStreamAdaptor(asset, |
| AssetStreamAdaptor::kNo_OwnAsset, AssetStreamAdaptor::kNo_HasMemoryBase)); |
| return doDecode(env, stream, padding, options); |
| } |
| |
| static jobject nativeDecodeByteArray(JNIEnv* env, jobject, jbyteArray byteArray, |
| jint offset, jint length, jobject options) { |
| |
| AutoJavaByteArray ar(env, byteArray); |
| SkMemoryStream* stream = new SkMemoryStream(ar.ptr() + offset, length, false); |
| SkAutoUnref aur(stream); |
| return doDecode(env, stream, NULL, options); |
| } |
| |
| static void nativeRequestCancel(JNIEnv*, jobject joptions) { |
| (void)AutoDecoderCancel::RequestCancel(joptions); |
| } |
| |
| static jboolean nativeIsSeekable(JNIEnv* env, jobject, jobject fileDescriptor) { |
| jint descriptor = jniGetFDFromFileDescriptor(env, fileDescriptor); |
| return ::lseek64(descriptor, 0, SEEK_CUR) != -1 ? JNI_TRUE : JNI_FALSE; |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static JNINativeMethod gMethods[] = { |
| { "nativeDecodeStream", |
| "(Ljava/io/InputStream;[BLandroid/graphics/Rect;Landroid/graphics/BitmapFactory$Options;)Landroid/graphics/Bitmap;", |
| (void*)nativeDecodeStream |
| }, |
| |
| { "nativeDecodeFileDescriptor", |
| "(Ljava/io/FileDescriptor;Landroid/graphics/Rect;Landroid/graphics/BitmapFactory$Options;)Landroid/graphics/Bitmap;", |
| (void*)nativeDecodeFileDescriptor |
| }, |
| |
| { "nativeDecodeAsset", |
| "(JLandroid/graphics/Rect;Landroid/graphics/BitmapFactory$Options;)Landroid/graphics/Bitmap;", |
| (void*)nativeDecodeAsset |
| }, |
| |
| { "nativeDecodeByteArray", |
| "([BIILandroid/graphics/BitmapFactory$Options;)Landroid/graphics/Bitmap;", |
| (void*)nativeDecodeByteArray |
| }, |
| |
| { "nativeIsSeekable", |
| "(Ljava/io/FileDescriptor;)Z", |
| (void*)nativeIsSeekable |
| }, |
| }; |
| |
| static JNINativeMethod gOptionsMethods[] = { |
| { "requestCancel", "()V", (void*)nativeRequestCancel } |
| }; |
| |
| static jfieldID getFieldIDCheck(JNIEnv* env, jclass clazz, |
| const char fieldname[], const char type[]) { |
| jfieldID id = env->GetFieldID(clazz, fieldname, type); |
| SkASSERT(id); |
| return id; |
| } |
| |
| int register_android_graphics_BitmapFactory(JNIEnv* env) { |
| jclass options_class = env->FindClass("android/graphics/BitmapFactory$Options"); |
| SkASSERT(options_class); |
| gOptions_bitmapFieldID = getFieldIDCheck(env, options_class, "inBitmap", |
| "Landroid/graphics/Bitmap;"); |
| gOptions_justBoundsFieldID = getFieldIDCheck(env, options_class, "inJustDecodeBounds", "Z"); |
| gOptions_sampleSizeFieldID = getFieldIDCheck(env, options_class, "inSampleSize", "I"); |
| gOptions_configFieldID = getFieldIDCheck(env, options_class, "inPreferredConfig", |
| "Landroid/graphics/Bitmap$Config;"); |
| gOptions_premultipliedFieldID = getFieldIDCheck(env, options_class, "inPremultiplied", "Z"); |
| gOptions_mutableFieldID = getFieldIDCheck(env, options_class, "inMutable", "Z"); |
| gOptions_ditherFieldID = getFieldIDCheck(env, options_class, "inDither", "Z"); |
| gOptions_preferQualityOverSpeedFieldID = getFieldIDCheck(env, options_class, |
| "inPreferQualityOverSpeed", "Z"); |
| gOptions_scaledFieldID = getFieldIDCheck(env, options_class, "inScaled", "Z"); |
| gOptions_densityFieldID = getFieldIDCheck(env, options_class, "inDensity", "I"); |
| gOptions_screenDensityFieldID = getFieldIDCheck(env, options_class, "inScreenDensity", "I"); |
| gOptions_targetDensityFieldID = getFieldIDCheck(env, options_class, "inTargetDensity", "I"); |
| gOptions_widthFieldID = getFieldIDCheck(env, options_class, "outWidth", "I"); |
| gOptions_heightFieldID = getFieldIDCheck(env, options_class, "outHeight", "I"); |
| gOptions_mimeFieldID = getFieldIDCheck(env, options_class, "outMimeType", "Ljava/lang/String;"); |
| gOptions_mCancelID = getFieldIDCheck(env, options_class, "mCancel", "Z"); |
| |
| jclass bitmap_class = env->FindClass("android/graphics/Bitmap"); |
| SkASSERT(bitmap_class); |
| gBitmap_nativeBitmapFieldID = getFieldIDCheck(env, bitmap_class, "mNativeBitmap", "J"); |
| gBitmap_ninePatchInsetsFieldID = getFieldIDCheck(env, bitmap_class, "mNinePatchInsets", |
| "Landroid/graphics/NinePatch$InsetStruct;"); |
| |
| gInsetStruct_class = (jclass) env->NewGlobalRef(env->FindClass("android/graphics/NinePatch$InsetStruct")); |
| gInsetStruct_constructorMethodID = env->GetMethodID(gInsetStruct_class, "<init>", "(IIIIIIIIFIF)V"); |
| |
| int ret = AndroidRuntime::registerNativeMethods(env, |
| "android/graphics/BitmapFactory$Options", |
| gOptionsMethods, |
| SK_ARRAY_COUNT(gOptionsMethods)); |
| if (ret) { |
| return ret; |
| } |
| return android::AndroidRuntime::registerNativeMethods(env, "android/graphics/BitmapFactory", |
| gMethods, SK_ARRAY_COUNT(gMethods)); |
| } |