The Tor Browser / file comparison
comparison: content/media/encoder/fmp4_muxer/MuxerOperation.h
content/media/encoder/fmp4_muxer/MuxerOperation.h
- branch
- TOR_BUG_9701
- changeset 13
- 44a2da4a2ab2
equal
deleted
inserted
replaced
| -1:000000000000 | 0:5a6875f7dccc |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-*/ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this file, | |
| 4 * You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #include "nsString.h" | |
| 7 #include "nsTArray.h" | |
| 8 | |
| 9 #ifndef MuxerOperation_h_ | |
| 10 #define MuxerOperation_h_ | |
| 11 | |
| 12 namespace mozilla { | |
| 13 | |
| 14 /** | |
| 15 * The interface for ISO box. All Boxes inherit from this interface. | |
| 16 * Generate() and Write() are needed to be called to produce a complete box. | |
| 17 * | |
| 18 * Generate() will generate all the data structures and their size. | |
| 19 * | |
| 20 * Write() will write all data into muxing output stream (ISOControl actually) | |
| 21 * and update the data which can't be known at Generate() (for example, the | |
| 22 * offset of the video data in mp4 file). | |
| 23 * | |
| 24 * ISO base media format is composed of several container boxes and the contained | |
| 25 * boxes. The container boxes hold a list of MuxerOperation which is implemented | |
| 26 * by contained boxes. The contained boxes will be called via the list. | |
| 27 * For example: | |
| 28 * MovieBox (container) ---> boxes (array of MuxerOperation) | |
| 29 * |---> MovieHeaderBox (full box) | |
| 30 * |---> TrakBox (container) | |
| 31 * |---> MovieExtendsBox (container) | |
| 32 * | |
| 33 * The complete box structure can be found at 14496-12 E.2 "The‘isom’brand". | |
| 34 */ | |
| 35 class MuxerOperation { | |
| 36 public: | |
| 37 NS_INLINE_DECL_THREADSAFE_REFCOUNTING(MuxerOperation) | |
| 38 | |
| 39 // Generate data of this box and its contained box, and calculate box size. | |
| 40 virtual nsresult Generate(uint32_t* aBoxSize) = 0; | |
| 41 | |
| 42 // Write data to stream. | |
| 43 virtual nsresult Write() = 0; | |
| 44 | |
| 45 // Find the box type via its name (name is the box type defined in 14496-12; | |
| 46 // for example, 'moov' is the name of MovieBox). | |
| 47 // It can only look child boxes including itself and the box in the boxes | |
| 48 // list if exists. It can't look parent boxes. | |
| 49 virtual nsresult Find(const nsACString& aType, | |
| 50 nsTArray<nsRefPtr<MuxerOperation>>& aOperations) = 0; | |
| 51 | |
| 52 virtual ~MuxerOperation() {} | |
| 53 }; | |
| 54 | |
| 55 } | |
| 56 #endif |
