| /* |
| * Copyright (C) 2010 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #define LOG_TAG "BitmapRegionDecoder" |
| |
| #include "BitmapFactory.h" |
| #include "CreateJavaOutputStreamAdaptor.h" |
| #include "GraphicsJNI.h" |
| #include "Utils.h" |
| |
| #include "SkBitmap.h" |
| #include "SkBitmapRegionDecoder.h" |
| #include "SkCodec.h" |
| #include "SkData.h" |
| #include "SkStream.h" |
| |
| #include "core_jni_helpers.h" |
| |
| #include <HardwareBitmapUploader.h> |
| #include <nativehelper/JNIHelp.h> |
| #include <androidfw/Asset.h> |
| #include <jni.h> |
| #include <sys/stat.h> |
| |
| #include <memory> |
| |
| using namespace android; |
| |
| static jobject createBitmapRegionDecoder(JNIEnv* env, std::unique_ptr<SkStreamRewindable> stream) { |
| std::unique_ptr<SkBitmapRegionDecoder> brd( |
| SkBitmapRegionDecoder::Create(stream.release(), |
| SkBitmapRegionDecoder::kAndroidCodec_Strategy)); |
| if (!brd) { |
| doThrowIOE(env, "Image format not supported"); |
| return nullObjectReturn("CreateBitmapRegionDecoder returned null"); |
| } |
| |
| return GraphicsJNI::createBitmapRegionDecoder(env, brd.release()); |
| } |
| |
| static jobject nativeNewInstanceFromByteArray(JNIEnv* env, jobject, jbyteArray byteArray, |
| jint offset, jint length, jboolean isShareable) { |
| /* If isShareable we could decide to just wrap the java array and |
| share it, but that means adding a globalref to the java array object |
| For now we just always copy the array's data if isShareable. |
| */ |
| AutoJavaByteArray ar(env, byteArray); |
| std::unique_ptr<SkMemoryStream> stream(new SkMemoryStream(ar.ptr() + offset, length, true)); |
| |
| // the decoder owns the stream. |
| jobject brd = createBitmapRegionDecoder(env, std::move(stream)); |
| return brd; |
| } |
| |
| static jobject nativeNewInstanceFromFileDescriptor(JNIEnv* env, jobject clazz, |
| jobject fileDescriptor, jboolean isShareable) { |
| NPE_CHECK_RETURN_ZERO(env, fileDescriptor); |
| |
| jint descriptor = jniGetFDFromFileDescriptor(env, fileDescriptor); |
| |
| struct stat fdStat; |
| if (fstat(descriptor, &fdStat) == -1) { |
| doThrowIOE(env, "broken file descriptor"); |
| return nullObjectReturn("fstat return -1"); |
| } |
| |
| sk_sp<SkData> data(SkData::MakeFromFD(descriptor)); |
| std::unique_ptr<SkMemoryStream> stream(new SkMemoryStream(std::move(data))); |
| |
| // the decoder owns the stream. |
| jobject brd = createBitmapRegionDecoder(env, std::move(stream)); |
| return brd; |
| } |
| |
| static jobject nativeNewInstanceFromStream(JNIEnv* env, jobject clazz, |
| jobject is, // InputStream |
| jbyteArray storage, // byte[] |
| jboolean isShareable) { |
| jobject brd = NULL; |
| // for now we don't allow shareable with java inputstreams |
| std::unique_ptr<SkStreamRewindable> stream(CopyJavaInputStream(env, is, storage)); |
| |
| if (stream) { |
| // the decoder owns the stream. |
| brd = createBitmapRegionDecoder(env, std::move(stream)); |
| } |
| return brd; |
| } |
| |
| static jobject nativeNewInstanceFromAsset(JNIEnv* env, jobject clazz, |
| jlong native_asset, // Asset |
| jboolean isShareable) { |
| Asset* asset = reinterpret_cast<Asset*>(native_asset); |
| std::unique_ptr<SkMemoryStream> stream(CopyAssetToStream(asset)); |
| if (NULL == stream) { |
| return NULL; |
| } |
| |
| // the decoder owns the stream. |
| jobject brd = createBitmapRegionDecoder(env, std::move(stream)); |
| return brd; |
| } |
| |
| /* |
| * nine patch not supported |
| * purgeable not supported |
| * reportSizeToVM not supported |
| */ |
| static jobject nativeDecodeRegion(JNIEnv* env, jobject, jlong brdHandle, jint inputX, |
| jint inputY, jint inputWidth, jint inputHeight, jobject options, jlong inBitmapHandle, |
| jlong colorSpaceHandle) { |
| |
| // Set default options. |
| int sampleSize = 1; |
| SkColorType colorType = kN32_SkColorType; |
| bool requireUnpremul = false; |
| jobject javaBitmap = nullptr; |
| bool isHardware = false; |
| sk_sp<SkColorSpace> colorSpace = GraphicsJNI::getNativeColorSpace(colorSpaceHandle); |
| // Update the default options with any options supplied by the client. |
| if (NULL != options) { |
| sampleSize = env->GetIntField(options, gOptions_sampleSizeFieldID); |
| jobject jconfig = env->GetObjectField(options, gOptions_configFieldID); |
| colorType = GraphicsJNI::getNativeBitmapColorType(env, jconfig); |
| isHardware = GraphicsJNI::isHardwareConfig(env, jconfig); |
| requireUnpremul = !env->GetBooleanField(options, gOptions_premultipliedFieldID); |
| javaBitmap = env->GetObjectField(options, gOptions_bitmapFieldID); |
| // The Java options of ditherMode and preferQualityOverSpeed are deprecated. We will |
| // ignore the values of these fields. |
| |
| // Initialize these fields to indicate a failure. If the decode succeeds, we |
| // will update them later on. |
| env->SetIntField(options, gOptions_widthFieldID, -1); |
| env->SetIntField(options, gOptions_heightFieldID, -1); |
| env->SetObjectField(options, gOptions_mimeFieldID, 0); |
| env->SetObjectField(options, gOptions_outConfigFieldID, 0); |
| env->SetObjectField(options, gOptions_outColorSpaceFieldID, 0); |
| } |
| |
| // Recycle a bitmap if possible. |
| android::Bitmap* recycledBitmap = nullptr; |
| size_t recycledBytes = 0; |
| if (javaBitmap) { |
| recycledBitmap = &bitmap::toBitmap(inBitmapHandle); |
| if (recycledBitmap->isImmutable()) { |
| ALOGW("Warning: Reusing an immutable bitmap as an image decoder target."); |
| } |
| recycledBytes = recycledBitmap->getAllocationByteCount(); |
| } |
| |
| SkBitmapRegionDecoder* brd = reinterpret_cast<SkBitmapRegionDecoder*>(brdHandle); |
| SkColorType decodeColorType = brd->computeOutputColorType(colorType); |
| if (decodeColorType == kRGBA_F16_SkColorType && isHardware && |
| !uirenderer::HardwareBitmapUploader::hasFP16Support()) { |
| decodeColorType = kN32_SkColorType; |
| } |
| |
| // Set up the pixel allocator |
| SkBRDAllocator* allocator = nullptr; |
| RecyclingClippingPixelAllocator recycleAlloc(recycledBitmap, recycledBytes); |
| HeapAllocator heapAlloc; |
| if (javaBitmap) { |
| allocator = &recycleAlloc; |
| // We are required to match the color type of the recycled bitmap. |
| decodeColorType = recycledBitmap->info().colorType(); |
| } else { |
| allocator = &heapAlloc; |
| } |
| |
| sk_sp<SkColorSpace> decodeColorSpace = brd->computeOutputColorSpace( |
| decodeColorType, colorSpace); |
| |
| // Decode the region. |
| SkIRect subset = SkIRect::MakeXYWH(inputX, inputY, inputWidth, inputHeight); |
| SkBitmap bitmap; |
| if (!brd->decodeRegion(&bitmap, allocator, subset, sampleSize, |
| decodeColorType, requireUnpremul, decodeColorSpace)) { |
| return nullObjectReturn("Failed to decode region."); |
| } |
| |
| // If the client provided options, indicate that the decode was successful. |
| if (NULL != options) { |
| env->SetIntField(options, gOptions_widthFieldID, bitmap.width()); |
| env->SetIntField(options, gOptions_heightFieldID, bitmap.height()); |
| |
| env->SetObjectField(options, gOptions_mimeFieldID, |
| encodedFormatToString(env, (SkEncodedImageFormat)brd->getEncodedFormat())); |
| if (env->ExceptionCheck()) { |
| return nullObjectReturn("OOM in encodedFormatToString()"); |
| } |
| |
| jint configID = GraphicsJNI::colorTypeToLegacyBitmapConfig(decodeColorType); |
| if (isHardware) { |
| configID = GraphicsJNI::kHardware_LegacyBitmapConfig; |
| } |
| jobject config = env->CallStaticObjectMethod(gBitmapConfig_class, |
| gBitmapConfig_nativeToConfigMethodID, configID); |
| env->SetObjectField(options, gOptions_outConfigFieldID, config); |
| |
| env->SetObjectField(options, gOptions_outColorSpaceFieldID, |
| GraphicsJNI::getColorSpace(env, decodeColorSpace.get(), decodeColorType)); |
| } |
| |
| // If we may have reused a bitmap, we need to indicate that the pixels have changed. |
| if (javaBitmap) { |
| recycleAlloc.copyIfNecessary(); |
| bitmap::reinitBitmap(env, javaBitmap, recycledBitmap->info(), !requireUnpremul); |
| return javaBitmap; |
| } |
| |
| int bitmapCreateFlags = 0; |
| if (!requireUnpremul) { |
| bitmapCreateFlags |= android::bitmap::kBitmapCreateFlag_Premultiplied; |
| } |
| if (isHardware) { |
| sk_sp<Bitmap> hardwareBitmap = Bitmap::allocateHardwareBitmap(bitmap); |
| return bitmap::createBitmap(env, hardwareBitmap.release(), bitmapCreateFlags); |
| } |
| return android::bitmap::createBitmap(env, heapAlloc.getStorageObjAndReset(), bitmapCreateFlags); |
| } |
| |
| static jint nativeGetHeight(JNIEnv* env, jobject, jlong brdHandle) { |
| SkBitmapRegionDecoder* brd = |
| reinterpret_cast<SkBitmapRegionDecoder*>(brdHandle); |
| return static_cast<jint>(brd->height()); |
| } |
| |
| static jint nativeGetWidth(JNIEnv* env, jobject, jlong brdHandle) { |
| SkBitmapRegionDecoder* brd = |
| reinterpret_cast<SkBitmapRegionDecoder*>(brdHandle); |
| return static_cast<jint>(brd->width()); |
| } |
| |
| static void nativeClean(JNIEnv* env, jobject, jlong brdHandle) { |
| SkBitmapRegionDecoder* brd = |
| reinterpret_cast<SkBitmapRegionDecoder*>(brdHandle); |
| delete brd; |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static const JNINativeMethod gBitmapRegionDecoderMethods[] = { |
| { "nativeDecodeRegion", |
| "(JIIIILandroid/graphics/BitmapFactory$Options;JJ)Landroid/graphics/Bitmap;", |
| (void*)nativeDecodeRegion}, |
| |
| { "nativeGetHeight", "(J)I", (void*)nativeGetHeight}, |
| |
| { "nativeGetWidth", "(J)I", (void*)nativeGetWidth}, |
| |
| { "nativeClean", "(J)V", (void*)nativeClean}, |
| |
| { "nativeNewInstance", |
| "([BIIZ)Landroid/graphics/BitmapRegionDecoder;", |
| (void*)nativeNewInstanceFromByteArray |
| }, |
| |
| { "nativeNewInstance", |
| "(Ljava/io/InputStream;[BZ)Landroid/graphics/BitmapRegionDecoder;", |
| (void*)nativeNewInstanceFromStream |
| }, |
| |
| { "nativeNewInstance", |
| "(Ljava/io/FileDescriptor;Z)Landroid/graphics/BitmapRegionDecoder;", |
| (void*)nativeNewInstanceFromFileDescriptor |
| }, |
| |
| { "nativeNewInstance", |
| "(JZ)Landroid/graphics/BitmapRegionDecoder;", |
| (void*)nativeNewInstanceFromAsset |
| }, |
| }; |
| |
| int register_android_graphics_BitmapRegionDecoder(JNIEnv* env) |
| { |
| return android::RegisterMethodsOrDie(env, "android/graphics/BitmapRegionDecoder", |
| gBitmapRegionDecoderMethods, NELEM(gBitmapRegionDecoderMethods)); |
| } |