1/*
2 * Copyright (C) 2013 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 "IMediaHTTPConnection"
19#include <utils/Log.h>
20
21#include <media/IMediaHTTPConnection.h>
22
23#include <binder/IMemory.h>
24#include <binder/Parcel.h>
25#include <utils/String8.h>
26#include <media/stagefright/foundation/ADebug.h>
27
28namespace android {
29
30enum {
31    CONNECT = IBinder::FIRST_CALL_TRANSACTION,
32    DISCONNECT,
33    READ_AT,
34    GET_SIZE,
35    GET_MIME_TYPE,
36    GET_URI
37};
38
39struct BpMediaHTTPConnection : public BpInterface<IMediaHTTPConnection> {
40    BpMediaHTTPConnection(const sp<IBinder> &impl)
41        : BpInterface<IMediaHTTPConnection>(impl) {
42    }
43
44    virtual bool connect(
45            const char *uri, const KeyedVector<String8, String8> *headers) {
46        Parcel data, reply;
47        data.writeInterfaceToken(
48                IMediaHTTPConnection::getInterfaceDescriptor());
49
50        String16 tmp(uri);
51        data.writeString16(tmp);
52
53        tmp = String16("");
54        if (headers != NULL) {
55            for (size_t i = 0; i < headers->size(); ++i) {
56                String16 key(headers->keyAt(i).string());
57                String16 val(headers->valueAt(i).string());
58
59                tmp.append(key);
60                tmp.append(String16(": "));
61                tmp.append(val);
62                tmp.append(String16("\r\n"));
63            }
64        }
65        data.writeString16(tmp);
66
67        remote()->transact(CONNECT, data, &reply);
68
69        int32_t exceptionCode = reply.readExceptionCode();
70
71        if (exceptionCode) {
72            return UNKNOWN_ERROR;
73        }
74
75        sp<IBinder> binder = reply.readStrongBinder();
76        mMemory = interface_cast<IMemory>(binder);
77
78        return mMemory != NULL;
79    }
80
81    virtual void disconnect() {
82        Parcel data, reply;
83        data.writeInterfaceToken(
84                IMediaHTTPConnection::getInterfaceDescriptor());
85
86        remote()->transact(DISCONNECT, data, &reply);
87    }
88
89    virtual ssize_t readAt(off64_t offset, void *buffer, size_t size) {
90        Parcel data, reply;
91        data.writeInterfaceToken(
92                IMediaHTTPConnection::getInterfaceDescriptor());
93
94        data.writeInt64(offset);
95        data.writeInt32(size);
96
97        status_t err = remote()->transact(READ_AT, data, &reply);
98        if (err != OK) {
99            ALOGE("remote readAt failed");
100            return UNKNOWN_ERROR;
101        }
102
103        int32_t exceptionCode = reply.readExceptionCode();
104
105        if (exceptionCode) {
106            return UNKNOWN_ERROR;
107        }
108
109        int32_t len = reply.readInt32();
110
111        if (len > 0) {
112            memcpy(buffer, mMemory->pointer(), len);
113        }
114
115        return len;
116    }
117
118    virtual off64_t getSize() {
119        Parcel data, reply;
120        data.writeInterfaceToken(
121                IMediaHTTPConnection::getInterfaceDescriptor());
122
123        remote()->transact(GET_SIZE, data, &reply);
124
125        int32_t exceptionCode = reply.readExceptionCode();
126
127        if (exceptionCode) {
128            return UNKNOWN_ERROR;
129        }
130
131        return reply.readInt64();
132    }
133
134    virtual status_t getMIMEType(String8 *mimeType) {
135        *mimeType = String8("");
136
137        Parcel data, reply;
138        data.writeInterfaceToken(
139                IMediaHTTPConnection::getInterfaceDescriptor());
140
141        remote()->transact(GET_MIME_TYPE, data, &reply);
142
143        int32_t exceptionCode = reply.readExceptionCode();
144
145        if (exceptionCode) {
146            return UNKNOWN_ERROR;
147        }
148
149        *mimeType = String8(reply.readString16());
150
151        return OK;
152    }
153
154    virtual status_t getUri(String8 *uri) {
155        *uri = String8("");
156
157        Parcel data, reply;
158        data.writeInterfaceToken(
159                IMediaHTTPConnection::getInterfaceDescriptor());
160
161        remote()->transact(GET_URI, data, &reply);
162
163        int32_t exceptionCode = reply.readExceptionCode();
164
165        if (exceptionCode) {
166            return UNKNOWN_ERROR;
167        }
168
169        *uri = String8(reply.readString16());
170
171        return OK;
172    }
173
174private:
175    sp<IMemory> mMemory;
176};
177
178IMPLEMENT_META_INTERFACE(
179        MediaHTTPConnection, "android.media.IMediaHTTPConnection");
180
181}  // namespace android
182
183