NuCachedSource2.h revision b5ce361d19e69fe156f7188c9ee0f4734b259874
15994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber/* 25994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber * Copyright (C) 2010 The Android Open Source Project 35994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber * 45994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber * Licensed under the Apache License, Version 2.0 (the "License"); 55994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber * you may not use this file except in compliance with the License. 65994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber * You may obtain a copy of the License at 75994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber * 85994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber * http://www.apache.org/licenses/LICENSE-2.0 95994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber * 105994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber * Unless required by applicable law or agreed to in writing, software 115994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber * distributed under the License is distributed on an "AS IS" BASIS, 125994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 135994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber * See the License for the specific language governing permissions and 145994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber * limitations under the License. 155994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber */ 165994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber 175994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber#ifndef NU_CACHED_SOURCE_2_H_ 185994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber 195994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber#define NU_CACHED_SOURCE_2_H_ 205994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber 215994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber#include <media/stagefright/foundation/ABase.h> 225994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber#include <media/stagefright/foundation/AHandlerReflector.h> 235994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber#include <media/stagefright/DataSource.h> 245994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber 255994b4798b01f3dd340577c9ea9657f09093a770Andreas Hubernamespace android { 265994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber 275994b4798b01f3dd340577c9ea9657f09093a770Andreas Huberstruct ALooper; 285994b4798b01f3dd340577c9ea9657f09093a770Andreas Huberstruct PageCache; 295994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber 305994b4798b01f3dd340577c9ea9657f09093a770Andreas Huberstruct NuCachedSource2 : public DataSource { 315994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber NuCachedSource2(const sp<DataSource> &source); 325994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber 335994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber virtual status_t initCheck() const; 345994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber 35c7fc37a3dab9bd1f96713649f351b5990e6316ffJames Dong virtual ssize_t readAt(off64_t offset, void *data, size_t size); 365994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber 37c7fc37a3dab9bd1f96713649f351b5990e6316ffJames Dong virtual status_t getSize(off64_t *size); 385994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber virtual uint32_t flags(); 395994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber 40b5ce361d19e69fe156f7188c9ee0f4734b259874Gloria Wang virtual sp<DecryptHandle> DrmInitialization(); 41b5ce361d19e69fe156f7188c9ee0f4734b259874Gloria Wang virtual void getDrmInfo(sp<DecryptHandle> &handle, DrmManagerClient **client); 42771b85d9245a24273497792a2515d88d31c99e1eGloria Wang virtual String8 getUri(); 435994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber //////////////////////////////////////////////////////////////////////////// 445994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber 455994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber size_t cachedSize(); 461bd233ce7e1aa7730bc18d46ffd57791391738cdBryan Mawhinney size_t approxDataRemaining(status_t *finalStatus); 475994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber 4834ef0f32c8fc0186236a27e07405328cc1f7c56dAndreas Huber void resumeFetchingIfNecessary(); 4934ef0f32c8fc0186236a27e07405328cc1f7c56dAndreas Huber 505994b4798b01f3dd340577c9ea9657f09093a770Andreas Huberprotected: 515994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber virtual ~NuCachedSource2(); 525994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber 535994b4798b01f3dd340577c9ea9657f09093a770Andreas Huberprivate: 545994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber friend struct AHandlerReflector<NuCachedSource2>; 555994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber 565994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber enum { 579235bc896538e906e162aa5f9e11f8af04c29664Andreas Huber kPageSize = 65536, 58145e68fc778275963189b02a1adcbe27cce4d769Andreas Huber kHighWaterThreshold = 20 * 1024 * 1024, 59145e68fc778275963189b02a1adcbe27cce4d769Andreas Huber kLowWaterThreshold = 4 * 1024 * 1024, 60a5273ebd1746368662a597643d6701a5046d5c7bAndreas Huber 61a5273ebd1746368662a597643d6701a5046d5c7bAndreas Huber // Read data after a 15 sec timeout whether we're actively 62a5273ebd1746368662a597643d6701a5046d5c7bAndreas Huber // fetching or not. 63a5273ebd1746368662a597643d6701a5046d5c7bAndreas Huber kKeepAliveIntervalUs = 15000000, 645994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber }; 655994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber 665994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber enum { 675994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber kWhatFetchMore = 'fetc', 685994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber kWhatRead = 'read', 695994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber }; 705994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber 715994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber sp<DataSource> mSource; 725994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber sp<AHandlerReflector<NuCachedSource2> > mReflector; 735994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber sp<ALooper> mLooper; 745994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber 755994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber Mutex mSerializer; 765994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber Mutex mLock; 775994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber Condition mCondition; 785994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber 795994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber PageCache *mCache; 80c7fc37a3dab9bd1f96713649f351b5990e6316ffJames Dong off64_t mCacheOffset; 815994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber status_t mFinalStatus; 82c7fc37a3dab9bd1f96713649f351b5990e6316ffJames Dong off64_t mLastAccessPos; 835994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber sp<AMessage> mAsyncResult; 845994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber bool mFetching; 85a5273ebd1746368662a597643d6701a5046d5c7bAndreas Huber int64_t mLastFetchTimeUs; 865994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber 875994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber void onMessageReceived(const sp<AMessage> &msg); 885994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber void onFetch(); 895994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber void onRead(const sp<AMessage> &msg); 905994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber 915994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber void fetchInternal(); 92c7fc37a3dab9bd1f96713649f351b5990e6316ffJames Dong ssize_t readInternal(off64_t offset, void *data, size_t size); 93c7fc37a3dab9bd1f96713649f351b5990e6316ffJames Dong status_t seekInternal_l(off64_t offset); 945994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber 951bd233ce7e1aa7730bc18d46ffd57791391738cdBryan Mawhinney size_t approxDataRemaining_l(status_t *finalStatus); 9634ef0f32c8fc0186236a27e07405328cc1f7c56dAndreas Huber void restartPrefetcherIfNecessary_l(bool ignoreLowWaterThreshold = false); 975994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber 985994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber DISALLOW_EVIL_CONSTRUCTORS(NuCachedSource2); 995994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber}; 1005994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber 1015994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber} // namespace android 1025994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber 1035994b4798b01f3dd340577c9ea9657f09093a770Andreas Huber#endif // NU_CACHED_SOURCE_2_H_ 104