Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 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 A_SESSION_DESCRIPTION_H_ |
| 18 | |
| 19 | #define A_SESSION_DESCRIPTION_H_ |
| 20 | |
| 21 | #include <sys/types.h> |
| 22 | |
| 23 | #include <media/stagefright/foundation/ABase.h> |
| 24 | #include <utils/KeyedVector.h> |
| 25 | #include <utils/RefBase.h> |
| 26 | #include <utils/Vector.h> |
| 27 | |
| 28 | namespace android { |
| 29 | |
| 30 | struct AString; |
| 31 | |
| 32 | struct ASessionDescription : public RefBase { |
| 33 | ASessionDescription(); |
| 34 | |
| 35 | bool setTo(const void *data, size_t size); |
| 36 | bool isValid() const; |
| 37 | |
| 38 | // Actually, 1 + number of tracks, as index 0 is reserved for the |
| 39 | // session description root-level attributes. |
| 40 | size_t countTracks() const; |
| 41 | void getFormat(size_t index, AString *value) const; |
| 42 | |
| 43 | void getFormatType( |
| 44 | size_t index, unsigned long *PT, |
| 45 | AString *desc, AString *params) const; |
| 46 | |
Andreas Huber | af063a6 | 2010-08-18 10:17:18 -0700 | [diff] [blame] | 47 | bool getDimensions( |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 48 | size_t index, unsigned long PT, |
| 49 | int32_t *width, int32_t *height) const; |
| 50 | |
| 51 | bool getDurationUs(int64_t *durationUs) const; |
| 52 | |
| 53 | static void ParseFormatDesc( |
| 54 | const char *desc, int32_t *timescale, int32_t *numChannels); |
| 55 | |
| 56 | bool findAttribute(size_t index, const char *key, AString *value) const; |
| 57 | |
Andreas Huber | a2edd7d8 | 2011-01-28 09:19:12 -0800 | [diff] [blame] | 58 | // parses strings of the form |
| 59 | // npt := npt-time "-" npt-time? | "-" npt-time |
| 60 | // npt-time := "now" | [0-9]+("." [0-9]*)? |
| 61 | // |
| 62 | // Returns true iff both "npt1" and "npt2" times were available, |
| 63 | // i.e. we have a fixed duration, otherwise this is live streaming. |
| 64 | static bool parseNTPRange(const char *s, float *npt1, float *npt2); |
| 65 | |
Andreas Huber | 7a747b8 | 2010-06-07 15:19:40 -0700 | [diff] [blame] | 66 | protected: |
| 67 | virtual ~ASessionDescription(); |
| 68 | |
| 69 | private: |
| 70 | typedef KeyedVector<AString,AString> Attribs; |
| 71 | |
| 72 | bool mIsValid; |
| 73 | Vector<Attribs> mTracks; |
| 74 | Vector<AString> mFormats; |
| 75 | |
| 76 | bool parse(const void *data, size_t size); |
| 77 | |
| 78 | DISALLOW_EVIL_CONSTRUCTORS(ASessionDescription); |
| 79 | }; |
| 80 | |
| 81 | } // namespace android |
| 82 | |
| 83 | #endif // A_SESSION_DESCRIPTION_H_ |