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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
tree | f435a8308119effd964b339f76abb83a57c29483 /dom/media/webm/EbmlComposer.h | |
parent | Initial commit. (diff) | |
download | firefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz firefox-26a029d407be480d791972afb5975cf62c9360a6.zip |
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'dom/media/webm/EbmlComposer.h')
-rw-r--r-- | dom/media/webm/EbmlComposer.h | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/dom/media/webm/EbmlComposer.h b/dom/media/webm/EbmlComposer.h new file mode 100644 index 0000000000..a037e4ef8b --- /dev/null +++ b/dom/media/webm/EbmlComposer.h @@ -0,0 +1,81 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-*/ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this file, + * You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#ifndef EbmlComposer_h_ +#define EbmlComposer_h_ +#include "nsTArray.h" +#include "ContainerWriter.h" + +namespace mozilla { + +/* + * A WebM muxer helper for package the valid WebM format. + */ +class EbmlComposer { + public: + EbmlComposer() = default; + /* + * Assign the parameters which header requires. These can be called multiple + * times to change paramter values until GenerateHeader() is called, when this + * becomes illegal to call again. + */ + void SetVideoConfig(uint32_t aWidth, uint32_t aHeight, uint32_t aDisplayWidth, + uint32_t aDisplayHeight); + void SetAudioConfig(uint32_t aSampleFreq, uint32_t aChannels); + /* + * Set the CodecPrivateData for writing in header. + */ + void SetAudioCodecPrivateData(nsTArray<uint8_t>& aBufs) { + mCodecPrivateData.AppendElements(aBufs); + } + /* + * Generate the whole WebM header with the configured tracks, and make + * available to ExtractBuffer. Must only be called once. + */ + void GenerateHeader(); + /* + * Insert media encoded buffer into muxer and it would be package + * into SimpleBlock. If no cluster is opened, new cluster will start for + * writing. Frames passed to this function should already have any codec delay + * applied. + */ + nsresult WriteSimpleBlock(EncodedFrame* aFrame); + /* + * Get valid cluster data. + */ + void ExtractBuffer(nsTArray<nsTArray<uint8_t>>* aDestBufs, + uint32_t aFlag = 0); + + private: + // True once we have written the first cluster header. We cannot serialize any + // P-frames until this is true, since we start a new cluster every I-frame. + bool mHasWrittenCluster = false; + // The timecode of the cluster. + uint64_t mCurrentClusterTimecode = 0; + + // Written data to be flushed out by ExtractBuffer(). + nsTArray<nsTArray<uint8_t>> mBuffer; + + // True when Metadata has been serialized into mBuffer. + bool mMetadataFinished = false; + + // Video configuration + int mWidth = 0; + int mHeight = 0; + int mDisplayWidth = 0; + int mDisplayHeight = 0; + bool mHasVideo = false; + + // Audio configuration + float mSampleFreq = 0; + int mChannels = 0; + bool mHasAudio = false; + // Audio codec specific header data. + nsTArray<uint8_t> mCodecPrivateData; +}; + +} // namespace mozilla + +#endif |