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      1 /*
      2  * Copyright (C) 2011 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 #ifndef CHROME_HTTP_DATA_SOURCE_H_
     18 
     19 #define CHROME_HTTP_DATA_SOURCE_H_
     20 
     21 #include <media/stagefright/foundation/AString.h>
     22 #include <utils/threads.h>
     23 
     24 #include "HTTPBase.h"
     25 
     26 namespace android {
     27 
     28 struct SfDelegate;
     29 
     30 struct ChromiumHTTPDataSource : public HTTPBase {
     31     ChromiumHTTPDataSource(uint32_t flags = 0);
     32 
     33     virtual status_t connect(
     34             const char *uri,
     35             const KeyedVector<String8, String8> *headers = NULL,
     36             off64_t offset = 0);
     37 
     38     virtual void disconnect();
     39 
     40     virtual status_t initCheck() const;
     41 
     42     virtual ssize_t readAt(off64_t offset, void *data, size_t size);
     43     virtual status_t getSize(off64_t *size);
     44     virtual uint32_t flags();
     45 
     46     virtual sp<DecryptHandle> DrmInitialization(const char *mime);
     47 
     48     virtual void getDrmInfo(sp<DecryptHandle> &handle, DrmManagerClient **client);
     49 
     50     virtual String8 getUri();
     51 
     52     virtual String8 getMIMEType() const;
     53 
     54     virtual status_t reconnectAtOffset(off64_t offset);
     55 
     56     static status_t UpdateProxyConfig(
     57             const char *host, int32_t port, const char *exclusionList);
     58 
     59 protected:
     60     virtual ~ChromiumHTTPDataSource();
     61 
     62 private:
     63     friend struct SfDelegate;
     64 
     65     enum State {
     66         DISCONNECTED,
     67         CONNECTING,
     68         CONNECTED,
     69         READING,
     70         DISCONNECTING
     71     };
     72 
     73     const uint32_t mFlags;
     74 
     75     mutable Mutex mLock;
     76     Condition mCondition;
     77 
     78     State mState;
     79 
     80     SfDelegate *mDelegate;
     81 
     82     AString mURI;
     83     KeyedVector<String8, String8> mHeaders;
     84 
     85     off64_t mCurrentOffset;
     86 
     87     // Any connection error or the result of a read operation
     88     // (for the lattter this is the number of bytes read, if successful).
     89     ssize_t mIOResult;
     90 
     91     int64_t mContentSize;
     92 
     93     String8 mContentType;
     94 
     95     sp<DecryptHandle> mDecryptHandle;
     96     DrmManagerClient *mDrmManagerClient;
     97 
     98     void disconnect_l();
     99 
    100     status_t connect_l(
    101             const char *uri,
    102             const KeyedVector<String8, String8> *headers,
    103             off64_t offset);
    104 
    105     static void InitiateRead(
    106             ChromiumHTTPDataSource *me, void *data, size_t size);
    107 
    108     void initiateRead(void *data, size_t size);
    109 
    110     void onConnectionEstablished(
    111             int64_t contentSize, const char *contentType);
    112 
    113     void onConnectionFailed(status_t err);
    114     void onReadCompleted(ssize_t size);
    115     void onDisconnectComplete();
    116 
    117     void clearDRMState_l();
    118 
    119     DISALLOW_EVIL_CONSTRUCTORS(ChromiumHTTPDataSource);
    120 };
    121 
    122 }  // namespace android
    123 
    124 #endif  // CHROME_HTTP_DATA_SOURCE_H_
    125