1/*
2 * Copyright 2017, The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *     http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17//#define LOG_NDEBUG 0
18#define LOG_TAG "Media2HTTPConnection-JNI"
19#include <utils/Log.h>
20
21#include <media/stagefright/foundation/ADebug.h>
22#include <nativehelper/ScopedLocalRef.h>
23
24#include "android_media_Media2HTTPConnection.h"
25#include "android_util_Binder.h"
26
27#include "android_runtime/AndroidRuntime.h"
28#include "android_runtime/Log.h"
29#include "jni.h"
30#include <nativehelper/JNIHelp.h>
31
32namespace android {
33
34static const size_t kBufferSize = 32768;
35
36JMedia2HTTPConnection::JMedia2HTTPConnection(JNIEnv *env, jobject thiz) {
37    mMedia2HTTPConnectionObj = env->NewGlobalRef(thiz);
38    CHECK(mMedia2HTTPConnectionObj != NULL);
39
40    ScopedLocalRef<jclass> media2HTTPConnectionClass(
41            env, env->GetObjectClass(mMedia2HTTPConnectionObj));
42    CHECK(media2HTTPConnectionClass.get() != NULL);
43
44    mConnectMethod = env->GetMethodID(
45            media2HTTPConnectionClass.get(),
46            "connect",
47            "(Ljava/lang/String;Ljava/lang/String;)Z");
48    CHECK(mConnectMethod != NULL);
49
50    mDisconnectMethod = env->GetMethodID(
51            media2HTTPConnectionClass.get(),
52            "disconnect",
53            "()V");
54    CHECK(mDisconnectMethod != NULL);
55
56    mReadAtMethod = env->GetMethodID(
57            media2HTTPConnectionClass.get(),
58            "readAt",
59            "(J[BI)I");
60    CHECK(mReadAtMethod != NULL);
61
62    mGetSizeMethod = env->GetMethodID(
63            media2HTTPConnectionClass.get(),
64            "getSize",
65            "()J");
66    CHECK(mGetSizeMethod != NULL);
67
68    mGetMIMETypeMethod = env->GetMethodID(
69            media2HTTPConnectionClass.get(),
70            "getMIMEType",
71            "()Ljava/lang/String;");
72    CHECK(mGetMIMETypeMethod != NULL);
73
74    mGetUriMethod = env->GetMethodID(
75            media2HTTPConnectionClass.get(),
76            "getUri",
77            "()Ljava/lang/String;");
78    CHECK(mGetUriMethod != NULL);
79
80    ScopedLocalRef<jbyteArray> tmp(
81        env, env->NewByteArray(kBufferSize));
82    mByteArrayObj = (jbyteArray)env->NewGlobalRef(tmp.get());
83    CHECK(mByteArrayObj != NULL);
84}
85
86JMedia2HTTPConnection::~JMedia2HTTPConnection() {
87    JNIEnv *env = AndroidRuntime::getJNIEnv();
88    env->DeleteGlobalRef(mMedia2HTTPConnectionObj);
89    env->DeleteGlobalRef(mByteArrayObj);
90}
91
92bool JMedia2HTTPConnection::connect(
93        const char *uri, const KeyedVector<String8, String8> *headers) {
94    String8 tmp("");
95    if (headers != NULL) {
96        for (size_t i = 0; i < headers->size(); ++i) {
97            tmp.append(headers->keyAt(i));
98            tmp.append(String8(": "));
99            tmp.append(headers->valueAt(i));
100            tmp.append(String8("\r\n"));
101        }
102    }
103
104    JNIEnv* env = AndroidRuntime::getJNIEnv();
105    jstring juri = env->NewStringUTF(uri);
106    jstring jheaders = env->NewStringUTF(tmp.string());
107
108    jboolean ret =
109        env->CallBooleanMethod(mMedia2HTTPConnectionObj, mConnectMethod, juri, jheaders);
110
111    env->DeleteLocalRef(juri);
112    env->DeleteLocalRef(jheaders);
113
114    return (bool)ret;
115}
116
117void JMedia2HTTPConnection::disconnect() {
118    JNIEnv* env = AndroidRuntime::getJNIEnv();
119    env->CallVoidMethod(mMedia2HTTPConnectionObj, mDisconnectMethod);
120}
121
122ssize_t JMedia2HTTPConnection::readAt(off64_t offset, void *data, size_t size) {
123    JNIEnv* env = AndroidRuntime::getJNIEnv();
124
125    if (size > kBufferSize) {
126        size = kBufferSize;
127    }
128
129    jint n = env->CallIntMethod(
130            mMedia2HTTPConnectionObj, mReadAtMethod, (jlong)offset, mByteArrayObj, (jint)size);
131
132    if (n > 0) {
133        env->GetByteArrayRegion(
134                mByteArrayObj,
135                0,
136                n,
137                (jbyte *)data);
138    }
139
140    return n;
141}
142
143off64_t JMedia2HTTPConnection::getSize() {
144    JNIEnv* env = AndroidRuntime::getJNIEnv();
145    return (off64_t)(env->CallLongMethod(mMedia2HTTPConnectionObj, mGetSizeMethod));
146}
147
148status_t JMedia2HTTPConnection::getMIMEType(String8 *mimeType) {
149    JNIEnv* env = AndroidRuntime::getJNIEnv();
150    jstring jmime = (jstring)env->CallObjectMethod(mMedia2HTTPConnectionObj, mGetMIMETypeMethod);
151    jboolean flag = env->ExceptionCheck();
152    if (flag) {
153        env->ExceptionClear();
154        return UNKNOWN_ERROR;
155    }
156
157    const char *str = env->GetStringUTFChars(jmime, 0);
158    if (str != NULL) {
159        *mimeType = String8(str);
160    } else {
161        *mimeType = "application/octet-stream";
162    }
163    env->ReleaseStringUTFChars(jmime, str);
164    return OK;
165}
166
167status_t JMedia2HTTPConnection::getUri(String8 *uri) {
168    JNIEnv* env = AndroidRuntime::getJNIEnv();
169    jstring juri = (jstring)env->CallObjectMethod(mMedia2HTTPConnectionObj, mGetUriMethod);
170    jboolean flag = env->ExceptionCheck();
171    if (flag) {
172        env->ExceptionClear();
173        return UNKNOWN_ERROR;
174    }
175
176    const char *str = env->GetStringUTFChars(juri, 0);
177    *uri = String8(str);
178    env->ReleaseStringUTFChars(juri, str);
179    return OK;
180}
181
182}  // namespace android
183