ff164a7d6f
Change-Id: I93364c74c26ba6e2bf6b08f1bd82802b966c8dfb Signed-off-by: Mike Lockwood <lockwood@android.com>
137 lines
4.1 KiB
C++
137 lines
4.1 KiB
C++
/*
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* Copyright (C) 2010 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define LOG_TAG "MtpCursorJNI"
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#include "utils/Log.h"
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#include <stdio.h>
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#include <assert.h>
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#include <limits.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include "jni.h"
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#include "JNIHelp.h"
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#include "android_runtime/AndroidRuntime.h"
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#include "binder/CursorWindow.h"
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#include "MtpClient.h"
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#include "MtpCursor.h"
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using namespace android;
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// ----------------------------------------------------------------------------
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static jfieldID field_context;
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// From android_media_MtpClient.cpp
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MtpClient * get_client_from_object(JNIEnv * env, jobject javaClient);
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// ----------------------------------------------------------------------------
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static bool ExceptionCheck(void* env)
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{
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return ((JNIEnv *)env)->ExceptionCheck();
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}
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static void
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android_media_MtpCursor_setup(JNIEnv *env, jobject thiz, jobject javaClient,
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jint queryType, jint deviceID, jint storageID, jint objectID, jintArray javaColumns)
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{
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#ifdef HAVE_ANDROID_OS
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LOGD("android_media_MtpCursor_setup queryType: %d deviceID: %d storageID: %d objectID: %d\n",
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queryType, deviceID, storageID, objectID);
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int* columns = NULL;
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int columnCount = 0;
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if (javaColumns) {
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columns = env->GetIntArrayElements(javaColumns, 0);
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columnCount = env->GetArrayLength(javaColumns);
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}
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MtpClient* client = get_client_from_object(env, javaClient);
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MtpCursor* cursor = new MtpCursor(client, queryType,
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deviceID, storageID, objectID, columnCount, columns);
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if (columns)
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env->ReleaseIntArrayElements(javaColumns, columns, 0);
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env->SetIntField(thiz, field_context, (int)cursor);
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#endif
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}
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static void
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android_media_MtpCursor_finalize(JNIEnv *env, jobject thiz)
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{
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#ifdef HAVE_ANDROID_OS
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LOGD("finalize\n");
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MtpCursor *cursor = (MtpCursor *)env->GetIntField(thiz, field_context);
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delete cursor;
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#endif
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}
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static jint
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android_media_MtpCursor_fill_window(JNIEnv *env, jobject thiz, jobject javaWindow, jint startPos)
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{
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#ifdef HAVE_ANDROID_OS
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CursorWindow* window = get_window_from_object(env, javaWindow);
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if (!window) {
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LOGE("Invalid CursorWindow");
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jniThrowException(env, "java/lang/IllegalArgumentException",
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"Bad CursorWindow");
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return 0;
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}
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MtpCursor *cursor = (MtpCursor *)env->GetIntField(thiz, field_context);
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return cursor->fillWindow(window, startPos);
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#else
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return 0;
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#endif
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}
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// ----------------------------------------------------------------------------
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static JNINativeMethod gMethods[] = {
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{"native_setup", "(Landroid/media/MtpClient;IIII[I)V",
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(void *)android_media_MtpCursor_setup},
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{"native_finalize", "()V", (void *)android_media_MtpCursor_finalize},
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{"native_fill_window", "(Landroid/database/CursorWindow;I)I",
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(void *)android_media_MtpCursor_fill_window},
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};
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static const char* const kClassPathName = "android/media/MtpCursor";
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int register_android_media_MtpCursor(JNIEnv *env)
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{
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jclass clazz;
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LOGD("register_android_media_MtpCursor\n");
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clazz = env->FindClass("android/media/MtpCursor");
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if (clazz == NULL) {
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LOGE("Can't find android/media/MtpCursor");
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return -1;
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}
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field_context = env->GetFieldID(clazz, "mNativeContext", "I");
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if (field_context == NULL) {
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LOGE("Can't find MtpCursor.mNativeContext");
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return -1;
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}
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return AndroidRuntime::registerNativeMethods(env,
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"android/media/MtpCursor", gMethods, NELEM(gMethods));
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}
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