ExifInterface: Remove JNI code (0dd9e9ca) · Commits · e / os / android_frameworks_base

media/java/android/media/ExifInterface.java

+36 −105

Original line number	Diff line number	Diff line
		@@ -69,7 +69,6 @@ import libcore.io.Streams;
		public class ExifInterface {
		private static final String TAG = "ExifInterface";
		private static final boolean DEBUG = false;
		private static final boolean HANDLE_RAW = false;

		// The Exif tag names. See Tiff 6.0 Section 3 and Section 8.
		/** Type is String. */
		@@ -1239,8 +1238,6 @@ public class ExifInterface {
		private static final int IMAGE_TYPE_SRW = 11;

		static {
		System.loadLibrary("media_jni");
		nativeInitRaw();
		sFormatter = new SimpleDateFormat("yyyy:MM:dd HH:mm:ss");
		sFormatter.setTimeZone(TimeZone.getTimeZone("UTC"));

		@@ -1259,7 +1256,6 @@ public class ExifInterface {
		private final FileDescriptor mSeekableFileDescriptor;
		private final AssetManager.AssetInputStream mAssetInputStream;
		private final boolean mIsInputStream;
		private boolean mIsRaw;
		private int mMimeType;
		private final HashMap[] mAttributes = new HashMap[EXIF_TAGS.length];
		private ByteOrder mExifByteOrder = ByteOrder.BIG_ENDIAN;
		@@ -1642,7 +1638,6 @@ public class ExifInterface {
		mAttributes[i] = new HashMap();
		}

		if (HANDLE_RAW) {
		// Check file type
		in = new BufferedInputStream(in, SIGNATURE_CHECK_SIZE);
		mMimeType = getMimeType((BufferedInputStream) in);
		@@ -1681,32 +1676,6 @@ public class ExifInterface {
		}
		// Set thumbnail image offset and length
		setThumbnailData(in);
		} else {
		if (mAssetInputStream != null) {
		long asset = mAssetInputStream.getNativeAsset();
		if (handleRawResult(nativeGetRawAttributesFromAsset(asset))) {
		return;
		}
		} else if (mSeekableFileDescriptor != null) {
		if (handleRawResult(nativeGetRawAttributesFromFileDescriptor(
		mSeekableFileDescriptor))) {
		return;
		}
		} else {
		in.mark(JPEG_SIGNATURE.length);
		byte[] signatureBytes = new byte[JPEG_SIGNATURE.length];
		if (in.read(signatureBytes) != JPEG_SIGNATURE.length) {
		throw new EOFException();
		}
		in.reset();
		if (!isJpegFormat(signatureBytes) && handleRawResult(
		nativeGetRawAttributesFromInputStream(in))) {
		return;
		}
		}
		// Process JPEG input stream
		getJpegAttributes(in, 0, IFD_TIFF_HINT);
		}
		} catch (IOException e) {
		// Ignore exceptions in order to keep the compatibility with the old versions of
		// ExifInterface.
		@@ -1724,36 +1693,6 @@ public class ExifInterface {
		}
		}

		private boolean handleRawResult(HashMap map) {
		if (map == null) {
		if (DEBUG) {
		Log.d(TAG, "Raw image file not detected");
		}
		return false;
		}

		// Mark for disabling the save feature.
		mIsRaw = true;

		String value = (String) map.remove(TAG_HAS_THUMBNAIL);
		mHasThumbnail = value != null && value.equalsIgnoreCase("true");
		value = (String) map.remove(TAG_THUMBNAIL_OFFSET);
		if (value != null) {
		mThumbnailOffset = Integer.parseInt(value);
		}
		value = (String) map.remove(TAG_THUMBNAIL_LENGTH);
		if (value != null) {
		mThumbnailLength = Integer.parseInt(value);
		}
		mThumbnailBytes = (byte[]) map.remove(TAG_THUMBNAIL_DATA);

		for (Map.Entry entry : (Set<Map.Entry>) map.entrySet()) {
		setAttribute((String) entry.getKey(), (String) entry.getValue());
		}

		return true;
		}

		private static boolean isSeekableFD(FileDescriptor fd) throws IOException {
		try {
		Os.lseek(fd, 0, OsConstants.SEEK_CUR);
		@@ -1782,9 +1721,9 @@ public class ExifInterface {
		* and make a single call rather than multiple calls for each attribute.
		*/
		public void saveAttributes() throws IOException {
		if (mIsRaw) {
		if (mMimeType != IMAGE_TYPE_JPEG) {
		throw new UnsupportedOperationException(
		"ExifInterface does not support saving attributes on RAW formats.");
		"ExifInterface only supports saving attributes on JPEG formats.");
		}
		if (mIsInputStream \|\| (mSeekableFileDescriptor == null && mFilename == null)) {
		throw new UnsupportedOperationException(
		@@ -3816,12 +3755,4 @@ public class ExifInterface {
		}
		return false;
		}

		// JNI methods for RAW formats.
		private static native void nativeInitRaw();
		private static native byte[] nativeGetThumbnailFromAsset(
		long asset, int thumbnailOffset, int thumbnailLength);
		private static native HashMap nativeGetRawAttributesFromAsset(long asset);
		private static native HashMap nativeGetRawAttributesFromFileDescriptor(FileDescriptor fd);
		private static native HashMap nativeGetRawAttributesFromInputStream(InputStream in);
		}
		No newline at end of file

media/jni/Android.mk

+0 −1

Original line number	Diff line number	Diff line
		@@ -3,7 +3,6 @@ include $(CLEAR_VARS)

		LOCAL_SRC_FILES:= \
		android_media_AmrInputStream.cpp \
		android_media_ExifInterface.cpp \
		android_media_ImageWriter.cpp \
		android_media_ImageReader.cpp \
		android_media_MediaCrypto.cpp \

media/jni/android_media_ExifInterface.cpp

deleted100644 → 0

+0 −426

Original line number	Diff line number	Diff line
		/*
		* Copyright 2016 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_NDEBUG 0
		#define LOG_TAG "ExifInterface_JNI"

		#include "android_media_Utils.h"

		#include "android/graphics/CreateJavaOutputStreamAdaptor.h"
		#include "src/piex_types.h"
		#include "src/piex.h"

		#include <jni.h>
		#include <JNIHelp.h>
		#include <androidfw/Asset.h>
		#include <android_runtime/AndroidRuntime.h>
		#include <android/graphics/Utils.h>
		#include <nativehelper/ScopedLocalRef.h>

		#include <utils/Log.h>
		#include <utils/String8.h>
		#include <utils/KeyedVector.h>

		// ----------------------------------------------------------------------------

		using namespace android;

		static const char kJpegSignatureChars[] = {(char)0xff, (char)0xd8, (char)0xff};
		static const int kJpegSignatureSize = 3;

		#define FIND_CLASS(var, className) \
		var = env->FindClass(className); \
		LOG_FATAL_IF(! var, "Unable to find class " className);

		#define GET_METHOD_ID(var, clazz, fieldName, fieldDescriptor) \
		var = env->GetMethodID(clazz, fieldName, fieldDescriptor); \
		LOG_FATAL_IF(! var, "Unable to find method " fieldName);

		struct HashMapFields {
		jmethodID init;
		jmethodID put;
		};

		struct fields_t {
		HashMapFields hashMap;
		jclass hashMapClassId;
		};

		static fields_t gFields;

		static jobject KeyedVectorToHashMap(JNIEnv *env, KeyedVector<String8, String8> const &map) {
		jclass clazz = gFields.hashMapClassId;
		jobject hashMap = env->NewObject(clazz, gFields.hashMap.init);
		for (size_t i = 0; i < map.size(); ++i) {
		jstring jkey = env->NewStringUTF(map.keyAt(i).string());
		jstring jvalue = env->NewStringUTF(map.valueAt(i).string());
		env->CallObjectMethod(hashMap, gFields.hashMap.put, jkey, jvalue);
		env->DeleteLocalRef(jkey);
		env->DeleteLocalRef(jvalue);
		}
		return hashMap;
		}

		extern "C" {

		// -------------------------- ExifInterface methods ---------------------------

		static void ExifInterface_initRaw(JNIEnv *env) {
		jclass clazz;
		FIND_CLASS(clazz, "java/util/HashMap");
		gFields.hashMapClassId = static_cast<jclass>(env->NewGlobalRef(clazz));

		GET_METHOD_ID(gFields.hashMap.init, clazz, "<init>", "()V");
		GET_METHOD_ID(gFields.hashMap.put, clazz, "put",
		"(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;");
		}

		static bool is_asset_stream(const SkStream& stream) {
		return stream.hasLength() && stream.hasPosition();
		}

		static jobject ExifInterface_getThumbnailFromAsset(
		JNIEnv* env, jclass /* clazz */, jlong jasset, jint jthumbnailOffset,
		jint jthumbnailLength) {
		Asset* asset = reinterpret_cast<Asset*>(jasset);
		std::unique_ptr<AssetStreamAdaptor> stream(new AssetStreamAdaptor(asset));

		std::unique_ptr<jbyte[]> thumbnailData(new jbyte[(int)jthumbnailLength]);
		if (thumbnailData.get() == NULL) {
		ALOGI("No memory to get thumbnail");
		return NULL;
		}

		// Do not know the current offset. So rewind it.
		stream->rewind();

		// Read thumbnail.
		stream->skip((int)jthumbnailOffset);
		stream->read((void*)thumbnailData.get(), (int)jthumbnailLength);

		// Copy to the byte array.
		jbyteArray byteArray = env->NewByteArray(jthumbnailLength);
		env->SetByteArrayRegion(byteArray, 0, jthumbnailLength, thumbnailData.get());
		return byteArray;
		}

		static jobject getRawAttributes(JNIEnv* env, SkStream* stream, bool returnThumbnail) {
		std::unique_ptr<SkStream> streamDeleter(stream);

		std::unique_ptr<::piex::StreamInterface> piexStream;
		if (is_asset_stream(*stream)) {
		piexStream.reset(new AssetStream(streamDeleter.release()));
		} else {
		piexStream.reset(new BufferedStream(streamDeleter.release()));
		}

		piex::PreviewImageData image_data;

		if (!GetExifFromRawImage(piexStream.get(), String8("[piex stream]"), image_data)) {
		return NULL;
		}

		KeyedVector<String8, String8> map;

		if (image_data.thumbnail.length > 0
		&& image_data.thumbnail.format == ::piex::Image::kJpegCompressed) {
		map.add(String8("HasThumbnail"), String8("true"));
		map.add(String8("ThumbnailOffset"), String8::format("%d", image_data.thumbnail.offset));
		map.add(String8("ThumbnailLength"), String8::format("%d", image_data.thumbnail.length));
		} else {
		map.add(String8("HasThumbnail"), String8("false"));
		}

		map.add(
		String8("Orientation"),
		String8::format("%u", image_data.exif_orientation));
		map.add(
		String8("ImageWidth"),
		String8::format("%u", image_data.full_width));
		map.add(
		String8("ImageLength"),
		String8::format("%u", image_data.full_height));

		// Current PIEX does not have LightSource information while JPEG version of
		// EXIFInterface always declares the light source field. For the
		// compatibility, it provides the default value of the light source field.
		map.add(String8("LightSource"), String8("0"));

		if (!image_data.maker.empty()) {
		map.add(String8("Make"), String8(image_data.maker.c_str()));
		}

		if (!image_data.model.empty()) {
		map.add(String8("Model"), String8(image_data.model.c_str()));
		}

		if (!image_data.date_time.empty()) {
		map.add(String8("DateTime"), String8(image_data.date_time.c_str()));
		}

		if (image_data.iso) {
		map.add(
		String8("ISOSpeedRatings"),
		String8::format("%u", image_data.iso));
		}

		if (image_data.exposure_time.numerator != 0
		&& image_data.exposure_time.denominator != 0) {
		double exposureTime =
		(double)image_data.exposure_time.numerator
		/ image_data.exposure_time.denominator;

		const char* format;
		if (exposureTime < 0.01) {
		format = "%6.4f";
		} else {
		format = "%5.3f";
		}
		map.add(String8("ExposureTime"), String8::format(format, exposureTime));
		}

		if (image_data.fnumber.numerator != 0
		&& image_data.fnumber.denominator != 0) {
		double fnumber =
		(double)image_data.fnumber.numerator
		/ image_data.fnumber.denominator;
		map.add(String8("FNumber"), String8::format("%5.3f", fnumber));
		}

		if (image_data.focal_length.numerator != 0
		&& image_data.focal_length.denominator != 0) {
		map.add(
		String8("FocalLength"),
		String8::format(
		"%u/%u",
		image_data.focal_length.numerator,
		image_data.focal_length.denominator));
		}

		if (image_data.gps.is_valid) {
		if (image_data.gps.latitude[0].denominator != 0
		&& image_data.gps.latitude[1].denominator != 0
		&& image_data.gps.latitude[2].denominator != 0) {
		map.add(
		String8("GPSLatitude"),
		String8::format(
		"%u/%u,%u/%u,%u/%u",
		image_data.gps.latitude[0].numerator,
		image_data.gps.latitude[0].denominator,
		image_data.gps.latitude[1].numerator,
		image_data.gps.latitude[1].denominator,
		image_data.gps.latitude[2].numerator,
		image_data.gps.latitude[2].denominator));
		}

		if (image_data.gps.latitude_ref) {
		char str[2];
		str[0] = image_data.gps.latitude_ref;
		str[1] = 0;
		map.add(String8("GPSLatitudeRef"), String8(str));
		}

		if (image_data.gps.longitude[0].denominator != 0
		&& image_data.gps.longitude[1].denominator != 0
		&& image_data.gps.longitude[2].denominator != 0) {
		map.add(
		String8("GPSLongitude"),
		String8::format(
		"%u/%u,%u/%u,%u/%u",
		image_data.gps.longitude[0].numerator,
		image_data.gps.longitude[0].denominator,
		image_data.gps.longitude[1].numerator,
		image_data.gps.longitude[1].denominator,
		image_data.gps.longitude[2].numerator,
		image_data.gps.longitude[2].denominator));
		}

		if (image_data.gps.longitude_ref) {
		char str[2];
		str[0] = image_data.gps.longitude_ref;
		str[1] = 0;
		map.add(String8("GPSLongitudeRef"), String8(str));
		}

		if (image_data.gps.altitude.denominator != 0) {
		map.add(
		String8("GPSAltitude"),
		String8::format("%u/%u",
		image_data.gps.altitude.numerator,
		image_data.gps.altitude.denominator));

		map.add(
		String8("GPSAltitudeRef"),
		String8(image_data.gps.altitude_ref ? "1" : "0"));
		}

		if (image_data.gps.time_stamp[0].denominator != 0
		&& image_data.gps.time_stamp[1].denominator != 0
		&& image_data.gps.time_stamp[2].denominator != 0) {
		map.add(
		String8("GPSTimeStamp"),
		String8::format(
		"%02u:%02u:%02u",
		image_data.gps.time_stamp[0].numerator
		/ image_data.gps.time_stamp[0].denominator,
		image_data.gps.time_stamp[1].numerator
		/ image_data.gps.time_stamp[1].denominator,
		image_data.gps.time_stamp[2].numerator
		/ image_data.gps.time_stamp[2].denominator));
		}

		if (!image_data.gps.date_stamp.empty()) {
		map.add(
		String8("GPSDateStamp"),
		String8(image_data.gps.date_stamp.c_str()));
		}
		}

		jobject hashMap = KeyedVectorToHashMap(env, map);

		if (returnThumbnail) {
		std::unique_ptr<jbyte[]> thumbnailData(new jbyte[image_data.thumbnail.length]);
		if (thumbnailData.get() == NULL) {
		ALOGE("No memory to parse a thumbnail");
		return NULL;
		}
		jbyteArray jthumbnailByteArray = env->NewByteArray(image_data.thumbnail.length);
		if (jthumbnailByteArray == NULL) {
		ALOGE("No memory to parse a thumbnail");
		return NULL;
		}
		piexStream.get()->GetData(image_data.thumbnail.offset, image_data.thumbnail.length,
		(uint8_t*)thumbnailData.get());
		env->SetByteArrayRegion(
		jthumbnailByteArray, 0, image_data.thumbnail.length, thumbnailData.get());
		jstring jkey = env->NewStringUTF(String8("ThumbnailData"));
		env->CallObjectMethod(hashMap, gFields.hashMap.put, jkey, jthumbnailByteArray);
		env->DeleteLocalRef(jkey);
		env->DeleteLocalRef(jthumbnailByteArray);
		}
		return hashMap;
		}

		static jobject ExifInterface_getRawAttributesFromAsset(
		JNIEnv* env, jclass /* clazz */, jlong jasset) {
		std::unique_ptr<char[]> jpegSignature(new char[kJpegSignatureSize]);
		if (jpegSignature.get() == NULL) {
		ALOGE("No enough memory to parse");
		return NULL;
		}

		Asset* asset = reinterpret_cast<Asset*>(jasset);
		std::unique_ptr<AssetStreamAdaptor> stream(new AssetStreamAdaptor(asset));

		if (stream.get()->read(jpegSignature.get(), kJpegSignatureSize) != kJpegSignatureSize) {
		// Rewind the stream.
		stream.get()->rewind();

		ALOGI("Corrupted image.");
		return NULL;
		}

		// Rewind the stream.
		stream.get()->rewind();

		if (memcmp(jpegSignature.get(), kJpegSignatureChars, kJpegSignatureSize) == 0) {
		ALOGI("Should be a JPEG stream.");
		return NULL;
		}

		// Try to parse from the given stream.
		jobject result = getRawAttributes(env, stream.get(), false);

		// Rewind the stream for the chance to read JPEG.
		if (result == NULL) {
		stream.get()->rewind();
		}
		return result;
		}

		static jobject ExifInterface_getRawAttributesFromFileDescriptor(
		JNIEnv* env, jclass /* clazz */, jobject jfileDescriptor) {
		std::unique_ptr<char[]> jpegSignature(new char[kJpegSignatureSize]);
		if (jpegSignature.get() == NULL) {
		ALOGE("No enough memory to parse");
		return NULL;
		}

		int fd = jniGetFDFromFileDescriptor(env, jfileDescriptor);
		if (fd < 0) {
		ALOGI("Invalid file descriptor");
		return NULL;
		}

		// Restore the file descriptor's offset on exiting this function.
		AutoFDSeek autoRestore(fd);

		int dupFd = dup(fd);

		FILE* file = fdopen(dupFd, "r");
		if (file == NULL) {
		ALOGI("Failed to open the file descriptor");
		return NULL;
		}

		if (fgets(jpegSignature.get(), kJpegSignatureSize, file) == NULL) {
		ALOGI("Corrupted image.");
		return NULL;
		}

		if (memcmp(jpegSignature.get(), kJpegSignatureChars, kJpegSignatureSize) == 0) {
		ALOGI("Should be a JPEG stream.");
		return NULL;
		}

		// Rewind the file descriptor.
		fseek(file, 0L, SEEK_SET);

		std::unique_ptr<SkFILEStream> fileStream(new SkFILEStream(file,
		SkFILEStream::kCallerPasses_Ownership));
		return getRawAttributes(env, fileStream.get(), false);
		}

		static jobject ExifInterface_getRawAttributesFromInputStream(
		JNIEnv* env, jclass /* clazz */, jobject jinputStream) {
		jbyteArray byteArray = env->NewByteArray(8*1024);
		ScopedLocalRef<jbyteArray> scoper(env, byteArray);
		std::unique_ptr<SkStream> stream(CreateJavaInputStreamAdaptor(env, jinputStream, scoper.get()));
		return getRawAttributes(env, stream.get(), true);
		}

		} // extern "C"

		// ----------------------------------------------------------------------------

		static JNINativeMethod gMethods[] = {
		{ "nativeInitRaw", "()V", (void *)ExifInterface_initRaw },
		{ "nativeGetThumbnailFromAsset", "(JII)[B", (void *)ExifInterface_getThumbnailFromAsset },
		{ "nativeGetRawAttributesFromAsset", "(J)Ljava/util/HashMap;",
		(void*)ExifInterface_getRawAttributesFromAsset },
		{ "nativeGetRawAttributesFromFileDescriptor", "(Ljava/io/FileDescriptor;)Ljava/util/HashMap;",
		(void*)ExifInterface_getRawAttributesFromFileDescriptor },
		{ "nativeGetRawAttributesFromInputStream", "(Ljava/io/InputStream;)Ljava/util/HashMap;",
		(void*)ExifInterface_getRawAttributesFromInputStream },
		};

		int register_android_media_ExifInterface(JNIEnv *env) {
		return AndroidRuntime::registerNativeMethods(
		env,
		"android/media/ExifInterface",
		gMethods,
		NELEM(gMethods));
		}

media/jni/android_media_MediaPlayer.cpp

+0 −6

Original line number	Diff line number	Diff line
		@@ -1090,7 +1090,6 @@ static int register_android_media_MediaPlayer(JNIEnv *env)
		return AndroidRuntime::registerNativeMethods(env,
		"android/media/MediaPlayer", gMethods, NELEM(gMethods));
		}
		extern int register_android_media_ExifInterface(JNIEnv *env);
		extern int register_android_media_ImageReader(JNIEnv *env);
		extern int register_android_media_ImageWriter(JNIEnv *env);
		extern int register_android_media_Crypto(JNIEnv *env);
		@@ -1222,11 +1221,6 @@ jint JNI_OnLoad(JavaVM* vm, void* /* reserved */)
		goto bail;
		}

		if (register_android_media_ExifInterface(env) < 0) {
		ALOGE("ERROR: ExifInterface native registration failed");
		goto bail;
		}

		/* success -- return valid version number */
		result = JNI_VERSION_1_4;