Finish deprecating legacy MediaScanner. (f8e15d90) · Commits · e / os / android_frameworks_base

media/java/android/media/MediaScanner.java

+87 −1873

File changed.

Preview size limit exceeded, changes collapsed.

media/java/android/media/RingtoneManager.java

+1 −1

Original line number	Diff line number	Diff line
		@@ -846,7 +846,7 @@ public class RingtoneManager {
		* Adds an audio file to the list of ringtones.
		*
		* After making sure the given file is an audio file, copies the file to the ringtone storage,
		* and asks the {@link android.media.MediaScanner} to scan that file. This call will block until
		* and asks the system to scan that file. This call will block until
		* the scan is completed.
		*
		* The directory where the copied file is stored is the directory that matches the ringtone's

media/jni/Android.bp

+0 −1

Original line number	Diff line number	Diff line
		@@ -17,7 +17,6 @@ cc_library_shared {
		"android_media_MediaPlayer.cpp",
		"android_media_MediaProfiles.cpp",
		"android_media_MediaRecorder.cpp",
		"android_media_MediaScanner.cpp",
		"android_media_MediaSync.cpp",
		"android_media_ResampleInputStream.cpp",
		"android_media_Streams.cpp",

media/jni/android_media_MediaPlayer.cpp

+0 −6

Original line number	Diff line number	Diff line
		@@ -1446,7 +1446,6 @@ extern int register_android_media_MediaHTTPConnection(JNIEnv *env);
		extern int register_android_media_MediaMetadataRetriever(JNIEnv *env);
		extern int register_android_media_MediaMuxer(JNIEnv *env);
		extern int register_android_media_MediaRecorder(JNIEnv *env);
		extern int register_android_media_MediaScanner(JNIEnv *env);
		extern int register_android_media_MediaSync(JNIEnv *env);
		extern int register_android_media_ResampleInputStream(JNIEnv *env);
		extern int register_android_media_MediaProfiles(JNIEnv *env);
		@@ -1485,11 +1484,6 @@ jint JNI_OnLoad(JavaVM* vm, void* /* reserved */)
		goto bail;
		}

		if (register_android_media_MediaScanner(env) < 0) {
		ALOGE("ERROR: MediaScanner native registration failed\n");
		goto bail;
		}

		if (register_android_media_MediaMetadataRetriever(env) < 0) {
		ALOGE("ERROR: MediaMetadataRetriever native registration failed\n");
		goto bail;

media/jni/android_media_MediaScanner.cpp

deleted100644 → 0

+0 −468

Original line number	Diff line number	Diff line
		/*
		**
		** Copyright 2007, 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 "MediaScannerJNI"
		#include <utils/Log.h>
		#include <utils/threads.h>
		#include <media/mediascanner.h>
		#include <media/stagefright/StagefrightMediaScanner.h>
		#include <private/media/VideoFrame.h>

		#include "jni.h"
		#include <nativehelper/JNIHelp.h>
		#include "android_runtime/AndroidRuntime.h"
		#include "android_runtime/Log.h"
		#include <android-base/macros.h> // for FALLTHROUGH_INTENDED

		using namespace android;


		static const char* const kClassMediaScannerClient =
		"android/media/MediaScannerClient";

		static const char* const kClassMediaScanner =
		"android/media/MediaScanner";

		static const char* const kRunTimeException =
		"java/lang/RuntimeException";

		static const char* const kIllegalArgumentException =
		"java/lang/IllegalArgumentException";

		struct fields_t {
		jfieldID context;
		};
		static fields_t fields;

		static status_t checkAndClearExceptionFromCallback(JNIEnv* env, const char* methodName) {
		if (env->ExceptionCheck()) {
		ALOGE("An exception was thrown by callback '%s'.", methodName);
		LOGE_EX(env);
		env->ExceptionClear();
		return UNKNOWN_ERROR;
		}
		return OK;
		}

		// stolen from dalvik/vm/checkJni.cpp
		static bool isValidUtf8(const char* bytes) {
		while (*bytes != '\0') {
		unsigned char utf8 = *(bytes++);
		// Switch on the high four bits.
		switch (utf8 >> 4) {
		case 0x00:
		case 0x01:
		case 0x02:
		case 0x03:
		case 0x04:
		case 0x05:
		case 0x06:
		case 0x07:
		// Bit pattern 0xxx. No need for any extra bytes.
		break;
		case 0x08:
		case 0x09:
		case 0x0a:
		case 0x0b:
		case 0x0f:
		/*
		* Bit pattern 10xx or 1111, which are illegal start bytes.
		* Note: 1111 is valid for normal UTF-8, but not the
		* modified UTF-8 used here.
		*/
		return false;
		case 0x0e:
		// Bit pattern 1110, so there are two additional bytes.
		utf8 = *(bytes++);
		if ((utf8 & 0xc0) != 0x80) {
		return false;
		}
		// Fall through to take care of the final byte.
		FALLTHROUGH_INTENDED;
		case 0x0c:
		case 0x0d:
		// Bit pattern 110x, so there is one additional byte.
		utf8 = *(bytes++);
		if ((utf8 & 0xc0) != 0x80) {
		return false;
		}
		break;
		}
		}
		return true;
		}

		class MyMediaScannerClient : public MediaScannerClient
		{
		public:
		MyMediaScannerClient(JNIEnv *env, jobject client)
		: mEnv(env),
		mClient(env->NewGlobalRef(client)),
		mScanFileMethodID(0),
		mHandleStringTagMethodID(0),
		mSetMimeTypeMethodID(0)
		{
		ALOGV("MyMediaScannerClient constructor");
		jclass mediaScannerClientInterface =
		env->FindClass(kClassMediaScannerClient);

		if (mediaScannerClientInterface == NULL) {
		ALOGE("Class %s not found", kClassMediaScannerClient);
		} else {
		mScanFileMethodID = env->GetMethodID(
		mediaScannerClientInterface,
		"scanFile",
		"(Ljava/lang/String;JJZZ)V");

		mHandleStringTagMethodID = env->GetMethodID(
		mediaScannerClientInterface,
		"handleStringTag",
		"(Ljava/lang/String;Ljava/lang/String;)V");

		mSetMimeTypeMethodID = env->GetMethodID(
		mediaScannerClientInterface,
		"setMimeType",
		"(Ljava/lang/String;)V");
		}
		}

		virtual ~MyMediaScannerClient()
		{
		ALOGV("MyMediaScannerClient destructor");
		mEnv->DeleteGlobalRef(mClient);
		}

		virtual status_t scanFile(const char* path, long long lastModified,
		long long fileSize, bool isDirectory, bool noMedia)
		{
		ALOGV("scanFile: path(%s), time(%lld), size(%lld) and isDir(%d)",
		path, lastModified, fileSize, isDirectory);

		jstring pathStr;
		if ((pathStr = mEnv->NewStringUTF(path)) == NULL) {
		mEnv->ExceptionClear();
		return NO_MEMORY;
		}

		mEnv->CallVoidMethod(mClient, mScanFileMethodID, pathStr, lastModified,
		fileSize, isDirectory, noMedia);

		mEnv->DeleteLocalRef(pathStr);
		return checkAndClearExceptionFromCallback(mEnv, "scanFile");
		}

		virtual status_t handleStringTag(const char* name, const char* value)
		{
		ALOGV("handleStringTag: name(%s) and value(%s)", name, value);
		jstring nameStr, valueStr;
		if ((nameStr = mEnv->NewStringUTF(name)) == NULL) {
		mEnv->ExceptionClear();
		return NO_MEMORY;
		}
		char *cleaned = NULL;
		if (!isValidUtf8(value)) {
		cleaned = strdup(value);
		char *chp = cleaned;
		char ch;
		while ((ch = *chp)) {
		if (ch & 0x80) {
		*chp = '?';
		}
		chp++;
		}
		value = cleaned;
		}
		valueStr = mEnv->NewStringUTF(value);
		free(cleaned);
		if (valueStr == NULL) {
		mEnv->DeleteLocalRef(nameStr);
		mEnv->ExceptionClear();
		return NO_MEMORY;
		}

		mEnv->CallVoidMethod(
		mClient, mHandleStringTagMethodID, nameStr, valueStr);

		mEnv->DeleteLocalRef(nameStr);
		mEnv->DeleteLocalRef(valueStr);
		return checkAndClearExceptionFromCallback(mEnv, "handleStringTag");
		}

		virtual status_t setMimeType(const char* mimeType)
		{
		ALOGV("setMimeType: %s", mimeType);
		jstring mimeTypeStr;
		if ((mimeTypeStr = mEnv->NewStringUTF(mimeType)) == NULL) {
		mEnv->ExceptionClear();
		return NO_MEMORY;
		}

		mEnv->CallVoidMethod(mClient, mSetMimeTypeMethodID, mimeTypeStr);

		mEnv->DeleteLocalRef(mimeTypeStr);
		return checkAndClearExceptionFromCallback(mEnv, "setMimeType");
		}

		private:
		JNIEnv *mEnv;
		jobject mClient;
		jmethodID mScanFileMethodID;
		jmethodID mHandleStringTagMethodID;
		jmethodID mSetMimeTypeMethodID;
		};


		static MediaScanner getNativeScanner_l(JNIEnv env, jobject thiz)
		{
		return (MediaScanner *) env->GetLongField(thiz, fields.context);
		}

		static void setNativeScanner_l(JNIEnv* env, jobject thiz, MediaScanner *s)
		{
		env->SetLongField(thiz, fields.context, (jlong)s);
		}

		static void
		android_media_MediaScanner_processDirectory(
		JNIEnv *env, jobject thiz, jstring path, jobject client)
		{
		ALOGV("processDirectory");
		MediaScanner *mp = getNativeScanner_l(env, thiz);
		if (mp == NULL) {
		jniThrowException(env, kRunTimeException, "No scanner available");
		return;
		}

		if (path == NULL) {
		jniThrowException(env, kIllegalArgumentException, NULL);
		return;
		}

		const char *pathStr = env->GetStringUTFChars(path, NULL);
		if (pathStr == NULL) { // Out of memory
		return;
		}

		MyMediaScannerClient myClient(env, client);
		MediaScanResult result = mp->processDirectory(pathStr, myClient);
		if (result == MEDIA_SCAN_RESULT_ERROR) {
		ALOGE("An error occurred while scanning directory '%s'.", pathStr);
		}
		env->ReleaseStringUTFChars(path, pathStr);
		}

		static jboolean
		android_media_MediaScanner_processFile(
		JNIEnv *env, jobject thiz, jstring path,
		jstring mimeType, jobject client)
		{
		ALOGV("processFile");

		// Lock already hold by processDirectory
		MediaScanner *mp = getNativeScanner_l(env, thiz);
		if (mp == NULL) {
		jniThrowException(env, kRunTimeException, "No scanner available");
		return false;
		}

		if (path == NULL) {
		jniThrowException(env, kIllegalArgumentException, NULL);
		return false;
		}

		const char *pathStr = env->GetStringUTFChars(path, NULL);
		if (pathStr == NULL) { // Out of memory
		return false;
		}

		const char *mimeTypeStr =
		(mimeType ? env->GetStringUTFChars(mimeType, NULL) : NULL);
		if (mimeType && mimeTypeStr == NULL) { // Out of memory
		// ReleaseStringUTFChars can be called with an exception pending.
		env->ReleaseStringUTFChars(path, pathStr);
		return false;
		}

		MyMediaScannerClient myClient(env, client);
		MediaScanResult result = mp->processFile(pathStr, mimeTypeStr, myClient);
		if (result == MEDIA_SCAN_RESULT_ERROR) {
		ALOGE("An error occurred while scanning file '%s'.", pathStr);
		}
		env->ReleaseStringUTFChars(path, pathStr);
		if (mimeType) {
		env->ReleaseStringUTFChars(mimeType, mimeTypeStr);
		}
		return result != MEDIA_SCAN_RESULT_ERROR;
		}

		static void
		android_media_MediaScanner_setLocale(
		JNIEnv *env, jobject thiz, jstring locale)
		{
		ALOGV("setLocale");
		MediaScanner *mp = getNativeScanner_l(env, thiz);
		if (mp == NULL) {
		jniThrowException(env, kRunTimeException, "No scanner available");
		return;
		}

		if (locale == NULL) {
		jniThrowException(env, kIllegalArgumentException, NULL);
		return;
		}
		const char *localeStr = env->GetStringUTFChars(locale, NULL);
		if (localeStr == NULL) { // Out of memory
		return;
		}
		mp->setLocale(localeStr);

		env->ReleaseStringUTFChars(locale, localeStr);
		}

		static jbyteArray
		android_media_MediaScanner_extractAlbumArt(
		JNIEnv *env, jobject thiz, jobject fileDescriptor)
		{
		ALOGV("extractAlbumArt");
		MediaScanner *mp = getNativeScanner_l(env, thiz);
		if (mp == NULL) {
		jniThrowException(env, kRunTimeException, "No scanner available");
		return NULL;
		}

		if (fileDescriptor == NULL) {
		jniThrowException(env, kIllegalArgumentException, NULL);
		return NULL;
		}

		int fd = jniGetFDFromFileDescriptor(env, fileDescriptor);
		MediaAlbumArt* mediaAlbumArt = mp->extractAlbumArt(fd);
		if (mediaAlbumArt == NULL) {
		return NULL;
		}

		jbyteArray array = env->NewByteArray(mediaAlbumArt->size());
		if (array != NULL) {
		const jbyte* data =
		reinterpret_cast<const jbyte*>(mediaAlbumArt->data());
		env->SetByteArrayRegion(array, 0, mediaAlbumArt->size(), data);
		}

		free(mediaAlbumArt);
		// if NewByteArray() returned NULL, an out-of-memory
		// exception will have been raised. I just want to
		// return null in that case.
		env->ExceptionClear();
		return array;
		}

		// This function gets a field ID, which in turn causes class initialization.
		// It is called from a static block in MediaScanner, which won't run until the
		// first time an instance of this class is used.
		static void
		android_media_MediaScanner_native_init(JNIEnv *env)
		{
		ALOGV("native_init");
		jclass clazz = env->FindClass(kClassMediaScanner);
		if (clazz == NULL) {
		return;
		}

		fields.context = env->GetFieldID(clazz, "mNativeContext", "J");
		if (fields.context == NULL) {
		return;
		}
		}

		static void
		android_media_MediaScanner_native_setup(JNIEnv *env, jobject thiz)
		{
		ALOGV("native_setup");
		MediaScanner *mp = new StagefrightMediaScanner;

		if (mp == NULL) {
		jniThrowException(env, kRunTimeException, "Out of memory");
		return;
		}

		env->SetLongField(thiz, fields.context, (jlong)mp);
		}

		static void
		android_media_MediaScanner_native_finalize(JNIEnv *env, jobject thiz)
		{
		ALOGV("native_finalize");
		MediaScanner *mp = getNativeScanner_l(env, thiz);
		if (mp == 0) {
		return;
		}
		delete mp;
		setNativeScanner_l(env, thiz, 0);
		}

		static const JNINativeMethod gMethods[] = {
		{
		"processDirectory",
		"(Ljava/lang/String;Landroid/media/MediaScannerClient;)V",
		(void *)android_media_MediaScanner_processDirectory
		},

		{
		"processFile",
		"(Ljava/lang/String;Ljava/lang/String;Landroid/media/MediaScannerClient;)Z",
		(void *)android_media_MediaScanner_processFile
		},

		{
		"setLocale",
		"(Ljava/lang/String;)V",
		(void *)android_media_MediaScanner_setLocale
		},

		{
		"extractAlbumArt",
		"(Ljava/io/FileDescriptor;)[B",
		(void *)android_media_MediaScanner_extractAlbumArt
		},

		{
		"native_init",
		"()V",
		(void *)android_media_MediaScanner_native_init
		},

		{
		"native_setup",
		"()V",
		(void *)android_media_MediaScanner_native_setup
		},

		{
		"native_finalize",
		"()V",
		(void *)android_media_MediaScanner_native_finalize
		},
		};

		// This function only registers the native methods, and is called from
		// JNI_OnLoad in android_media_MediaPlayer.cpp
		int register_android_media_MediaScanner(JNIEnv *env)
		{
		return AndroidRuntime::registerNativeMethods(env,
		kClassMediaScanner, gMethods, NELEM(gMethods));
		}