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/*
* 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 "PtpCursorJNI"
#include "utils/Log.h"
#include <stdio.h>
#include <assert.h>
#include <limits.h>
#include <unistd.h>
#include <fcntl.h>
#include "jni.h"
#include "JNIHelp.h"
#include "android_runtime/AndroidRuntime.h"
#include "binder/CursorWindow.h"
#include "MtpClient.h"
#include "MtpCursor.h"
using namespace android;
// ----------------------------------------------------------------------------
static jfieldID field_context;
// From android_media_PtpClient.cpp
MtpClient * get_client_from_object(JNIEnv * env, jobject javaClient);
// ----------------------------------------------------------------------------
static bool ExceptionCheck(void* env)
{
return ((JNIEnv *)env)->ExceptionCheck();
}
static void
android_media_PtpCursor_setup(JNIEnv *env, jobject thiz, jobject javaClient,
jint queryType, jint deviceID, jlong storageID, jlong objectID, jintArray javaColumns)
{
#ifdef HAVE_ANDROID_OS
LOGD("android_media_PtpCursor_setup queryType: %d deviceID: %d storageID: %lld objectID: %lld\n",
queryType, deviceID, storageID, objectID);
int* columns = NULL;
int columnCount = 0;
if (javaColumns) {
columns = env->GetIntArrayElements(javaColumns, 0);
columnCount = env->GetArrayLength(javaColumns);
}
MtpClient* client = get_client_from_object(env, javaClient);
MtpCursor* cursor = new MtpCursor(client, queryType,
deviceID, storageID, objectID, columnCount, columns);
if (columns)
env->ReleaseIntArrayElements(javaColumns, columns, 0);
env->SetIntField(thiz, field_context, (int)cursor);
#endif
}
static void
android_media_PtpCursor_finalize(JNIEnv *env, jobject thiz)
{
#ifdef HAVE_ANDROID_OS
LOGD("finalize\n");
MtpCursor *cursor = (MtpCursor *)env->GetIntField(thiz, field_context);
delete cursor;
#endif
}
static jint
android_media_PtpCursor_fill_window(JNIEnv *env, jobject thiz, jobject javaWindow, jint startPos)
{
#ifdef HAVE_ANDROID_OS
CursorWindow* window = get_window_from_object(env, javaWindow);
if (!window) {
LOGE("Invalid CursorWindow");
jniThrowException(env, "java/lang/IllegalArgumentException",
"Bad CursorWindow");
return 0;
}
MtpCursor *cursor = (MtpCursor *)env->GetIntField(thiz, field_context);
return cursor->fillWindow(window, startPos);
#else
return 0;
#endif
}
// ----------------------------------------------------------------------------
static JNINativeMethod gMethods[] = {
{"native_setup", "(Landroid/media/PtpClient;IIJJ[I)V",
(void *)android_media_PtpCursor_setup},
{"native_finalize", "()V", (void *)android_media_PtpCursor_finalize},
{"native_fill_window", "(Landroid/database/CursorWindow;I)I",
(void *)android_media_PtpCursor_fill_window},
};
static const char* const kClassPathName = "android/media/PtpCursor";
int register_android_media_PtpCursor(JNIEnv *env)
{
jclass clazz;
LOGD("register_android_media_PtpCursor\n");
clazz = env->FindClass("android/media/PtpCursor");
if (clazz == NULL) {
LOGE("Can't find android/media/PtpCursor");
return -1;
}
field_context = env->GetFieldID(clazz, "mNativeContext", "I");
if (field_context == NULL) {
LOGE("Can't find PtpCursor.mNativeContext");
return -1;
}
return AndroidRuntime::registerNativeMethods(env,
"android/media/PtpCursor", gMethods, NELEM(gMethods));
}
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