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comparison: content/media/webm/EbmlComposer.h
content/media/webm/EbmlComposer.h
- branch
- TOR_BUG_9701
- changeset 13
- 44a2da4a2ab2
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| -1:000000000000 | 0:ac0a22bdbd7b |
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| 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 #ifndef EbmlComposer_h_ | |
| 7 #define EbmlComposer_h_ | |
| 8 #include "nsTArray.h" | |
| 9 #include "ContainerWriter.h" | |
| 10 | |
| 11 namespace mozilla { | |
| 12 | |
| 13 /* | |
| 14 * A WebM muxer helper for package the valid WebM format. | |
| 15 */ | |
| 16 class EbmlComposer { | |
| 17 public: | |
| 18 EbmlComposer(); | |
| 19 /* | |
| 20 * Assign the parameter which header required. | |
| 21 */ | |
| 22 void SetVideoConfig(uint32_t aWidth, uint32_t aHeight, uint32_t aDisplayWidth, | |
| 23 uint32_t aDisplayHeight, float aFrameRate); | |
| 24 | |
| 25 void SetAudioConfig(uint32_t aSampleFreq, uint32_t aChannels, | |
| 26 uint32_t bitDepth); | |
| 27 /* | |
| 28 * Set the CodecPrivateData for writing in header. | |
| 29 */ | |
| 30 void SetAudioCodecPrivateData(nsTArray<uint8_t>& aBufs) | |
| 31 { | |
| 32 mCodecPrivateData.AppendElements(aBufs); | |
| 33 } | |
| 34 /* | |
| 35 * Generate the whole WebM header and output to mBuff. | |
| 36 */ | |
| 37 void GenerateHeader(); | |
| 38 /* | |
| 39 * Insert media encoded buffer into muxer and it would be package | |
| 40 * into SimpleBlock. If no cluster is opened, new cluster will start for writing. | |
| 41 */ | |
| 42 void WriteSimpleBlock(EncodedFrame* aFrame); | |
| 43 /* | |
| 44 * Get valid cluster data. | |
| 45 */ | |
| 46 void ExtractBuffer(nsTArray<nsTArray<uint8_t> >* aDestBufs, | |
| 47 uint32_t aFlag = 0); | |
| 48 private: | |
| 49 // Move the metadata data to mClusterCanFlushBuffs. | |
| 50 void FinishMetadata(); | |
| 51 // Close current cluster and move data to mClusterCanFlushBuffs. | |
| 52 void FinishCluster(); | |
| 53 // The temporary storage for cluster data. | |
| 54 nsTArray<nsTArray<uint8_t> > mClusterBuffs; | |
| 55 // The storage which contain valid cluster data. | |
| 56 nsTArray<nsTArray<uint8_t> > mClusterCanFlushBuffs; | |
| 57 | |
| 58 // Indicate the data types in mClusterBuffs. | |
| 59 enum { | |
| 60 FLUSH_NONE = 0, | |
| 61 FLUSH_METADATA = 1 << 0, | |
| 62 FLUSH_CLUSTER = 1 << 1 | |
| 63 }; | |
| 64 uint32_t mFlushState; | |
| 65 // Indicate the cluster header index in mClusterBuffs. | |
| 66 uint32_t mClusterHeaderIndex; | |
| 67 // The cluster length position. | |
| 68 uint64_t mClusterLengthLoc; | |
| 69 // Audio codec specific header data. | |
| 70 nsTArray<uint8_t> mCodecPrivateData; | |
| 71 | |
| 72 // The timecode of the cluster. | |
| 73 uint64_t mClusterTimecode; | |
| 74 | |
| 75 // Video configuration | |
| 76 int mWidth; | |
| 77 int mHeight; | |
| 78 int mDisplayWidth; | |
| 79 int mDisplayHeight; | |
| 80 float mFrameRate; | |
| 81 // Audio configuration | |
| 82 float mSampleFreq; | |
| 83 int mBitDepth; | |
| 84 int mChannels; | |
| 85 }; | |
| 86 | |
| 87 } | |
| 88 #endif |
