1 /* 2 * Copyright (C) 2010 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 WVM_EXTRACTOR_H_ 18 19 #define WVM_EXTRACTOR_H_ 20 21 #include <media/stagefright/MediaExtractor.h> 22 #include <utils/Errors.h> 23 24 namespace android { 25 26 struct AMessage; 27 class String8; 28 class DataSource; 29 30 class WVMLoadableExtractor : public MediaExtractor { 31 public: WVMLoadableExtractor()32 WVMLoadableExtractor() {} ~WVMLoadableExtractor()33 virtual ~WVMLoadableExtractor() {} 34 35 virtual int64_t getCachedDurationUs(status_t *finalStatus) = 0; 36 virtual status_t getError() = 0; 37 virtual status_t getEstimatedBandwidthKbps(int32_t *kbps) = 0; 38 virtual void setAdaptiveStreamingMode(bool adaptive) = 0; 39 virtual void setCryptoPluginMode(bool cryptoPluginMode) = 0; 40 virtual void setError(status_t err) = 0; 41 virtual void setUID(uid_t uid) = 0; 42 }; 43 44 class WVMExtractor : public MediaExtractor { 45 public: 46 WVMExtractor(const sp<DataSource> &source); 47 48 virtual size_t countTracks(); 49 virtual sp<MediaSource> getTrack(size_t index); 50 virtual sp<MetaData> getTrackMetaData(size_t index, uint32_t flags); 51 virtual sp<MetaData> getMetaData(); 52 53 // Return the amount of data cached from the current 54 // playback positiion (in us). 55 // While more data is still being fetched *finalStatus == OK, 56 // Once fetching is completed (no more data available), *finalStatus != OK 57 // If fetching completed normally (i.e. reached EOS instead of IO error) 58 // *finalStatus == ERROR_END_OF_STREAM 59 int64_t getCachedDurationUs(status_t *finalStatus); 60 61 // Return the current estimated bandwidth 62 status_t getEstimatedBandwidthKbps(int32_t *kbps); 63 64 // Set to use adaptive streaming mode by the WV component. 65 // If adaptive == true, adaptive streaming mode will be used. 66 // Default mode is non-adaptive streaming mode. 67 // Should set to use adaptive streaming mode only if widevine:// protocol 68 // is used. 69 void setAdaptiveStreamingMode(bool adaptive); 70 71 // setCryptoPluginMode(true) to select crypto plugin mode. 72 // In this mode, the extractor returns encrypted data for use 73 // with the MediaCodec model, which handles the decryption in the 74 // codec. 75 void setCryptoPluginMode(bool cryptoPluginMode); 76 77 void setUID(uid_t uid); 78 79 static bool getVendorLibHandle(); 80 81 status_t getError(); 82 83 void setError(status_t err); 84 85 protected: 86 virtual ~WVMExtractor(); 87 88 private: 89 sp<DataSource> mDataSource; 90 sp<WVMLoadableExtractor> mImpl; 91 92 WVMExtractor(const WVMExtractor &); 93 WVMExtractor &operator=(const WVMExtractor &); 94 }; 95 96 bool SniffWVM( 97 const sp<DataSource> &source, String8 *mimeType, float *confidence, 98 sp<AMessage> *); 99 100 } // namespace android 101 102 #endif // DRM_EXTRACTOR_H_ 103 104