зеркало из https://github.com/mozilla/gecko-dev.git
78 строки
2.5 KiB
C++
78 строки
2.5 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-*/
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef ContainerWriter_h_
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#define ContainerWriter_h_
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#include "nsTArray.h"
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#include "nsAutoPtr.h"
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#include "EncodedFrameContainer.h"
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#include "TrackMetadataBase.h"
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namespace mozilla {
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/**
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* ContainerWriter packs encoded track data into a specific media container.
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*/
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class ContainerWriter {
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public:
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ContainerWriter()
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: mInitialized(false)
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, mIsWritingComplete(false)
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{}
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virtual ~ContainerWriter() {}
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// Mapping to DOMLocalMediaStream::TrackTypeHints
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enum {
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CREATE_AUDIO_TRACK = 1 << 0,
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CREATE_VIDEO_TRACK = 1 << 1,
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};
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enum {
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END_OF_STREAM = 1 << 0
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};
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/**
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* Writes encoded track data from aBuffer to a packet, and insert this packet
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* into the internal stream of container writer. aDuration is the playback
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* duration of this packet in number of samples. aFlags is true with
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* END_OF_STREAM if this is the last packet of track.
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* Currently, WriteEncodedTrack doesn't support multiple tracks.
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*/
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virtual nsresult WriteEncodedTrack(const EncodedFrameContainer& aData,
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uint32_t aFlags = 0) = 0;
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/**
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* Set the meta data pointer into muxer
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* This function will check the integrity of aMetadata.
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* If the meta data isn't well format, this function will return NS_ERROR_FAILURE to caller,
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* else save the pointer to mMetadata and return NS_OK.
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*/
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virtual nsresult SetMetadata(TrackMetadataBase* aMetadata) = 0;
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/**
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* Indicate if the writer has finished to output data
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*/
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virtual bool IsWritingComplete() { return mIsWritingComplete; }
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enum {
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FLUSH_NEEDED = 1 << 0,
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GET_HEADER = 1 << 1
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};
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/**
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* Copies the final container data to a buffer if it has accumulated enough
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* packets from WriteEncodedTrack. This buffer of data is appended to
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* aOutputBufs, and existing elements of aOutputBufs should not be modified.
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* aFlags is true with FLUSH_NEEDED will force OggWriter to flush an ogg page
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* even it is not full, and copy these container data to a buffer for
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* aOutputBufs to append.
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*/
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virtual nsresult GetContainerData(nsTArray<nsTArray<uint8_t> >* aOutputBufs,
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uint32_t aFlags = 0) = 0;
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protected:
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bool mInitialized;
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bool mIsWritingComplete;
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};
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}
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#endif
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