1 /* 2 * Copyright (C) 2009 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 MMAP_SOURCE_H_ 18 19 #define MMAP_SOURCE_H_ 20 21 #include <media/stagefright/DataSource.h> 22 #include <media/stagefright/MediaErrors.h> 23 24 namespace android { 25 26 class MmapSource : public DataSource { 27 public: 28 MmapSource(const char *filename); 29 30 // Assumes ownership of "fd". 31 MmapSource(int fd, int64_t offset, int64_t length); 32 33 virtual ~MmapSource(); 34 35 status_t InitCheck() const; 36 37 virtual ssize_t read_at(off_t offset, void *data, size_t size); 38 virtual status_t getSize(off_t *size); 39 40 private: 41 int mFd; 42 void *mBase; 43 size_t mSize; 44 45 MmapSource(const MmapSource &); 46 MmapSource &operator=(const MmapSource &); 47 }; 48 49 } // namespace android 50 51 #endif // MMAP_SOURCE_H_ 52 53