1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/content/media/encoder/ContainerWriter.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,77 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-*/
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this file,
1.7 + * You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#ifndef ContainerWriter_h_
1.10 +#define ContainerWriter_h_
1.11 +
1.12 +#include "nsTArray.h"
1.13 +#include "nsAutoPtr.h"
1.14 +#include "EncodedFrameContainer.h"
1.15 +#include "TrackMetadataBase.h"
1.16 +
1.17 +namespace mozilla {
1.18 +/**
1.19 + * ContainerWriter packs encoded track data into a specific media container.
1.20 + */
1.21 +class ContainerWriter {
1.22 +public:
1.23 + ContainerWriter()
1.24 + : mInitialized(false)
1.25 + , mIsWritingComplete(false)
1.26 + {}
1.27 + virtual ~ContainerWriter() {}
1.28 + // Mapping to DOMLocalMediaStream::TrackTypeHints
1.29 + enum {
1.30 + CREATE_AUDIO_TRACK = 1 << 0,
1.31 + CREATE_VIDEO_TRACK = 1 << 1,
1.32 + };
1.33 + enum {
1.34 + END_OF_STREAM = 1 << 0
1.35 + };
1.36 +
1.37 + /**
1.38 + * Writes encoded track data from aBuffer to a packet, and insert this packet
1.39 + * into the internal stream of container writer. aDuration is the playback
1.40 + * duration of this packet in number of samples. aFlags is true with
1.41 + * END_OF_STREAM if this is the last packet of track.
1.42 + * Currently, WriteEncodedTrack doesn't support multiple tracks.
1.43 + */
1.44 + virtual nsresult WriteEncodedTrack(const EncodedFrameContainer& aData,
1.45 + uint32_t aFlags = 0) = 0;
1.46 +
1.47 + /**
1.48 + * Set the meta data pointer into muxer
1.49 + * This function will check the integrity of aMetadata.
1.50 + * If the meta data isn't well format, this function will return NS_ERROR_FAILURE to caller,
1.51 + * else save the pointer to mMetadata and return NS_OK.
1.52 + */
1.53 + virtual nsresult SetMetadata(TrackMetadataBase* aMetadata) = 0;
1.54 +
1.55 + /**
1.56 + * Indicate if the writer has finished to output data
1.57 + */
1.58 + virtual bool IsWritingComplete() { return mIsWritingComplete; }
1.59 +
1.60 + enum {
1.61 + FLUSH_NEEDED = 1 << 0,
1.62 + GET_HEADER = 1 << 1
1.63 + };
1.64 +
1.65 + /**
1.66 + * Copies the final container data to a buffer if it has accumulated enough
1.67 + * packets from WriteEncodedTrack. This buffer of data is appended to
1.68 + * aOutputBufs, and existing elements of aOutputBufs should not be modified.
1.69 + * aFlags is true with FLUSH_NEEDED will force OggWriter to flush an ogg page
1.70 + * even it is not full, and copy these container data to a buffer for
1.71 + * aOutputBufs to append.
1.72 + */
1.73 + virtual nsresult GetContainerData(nsTArray<nsTArray<uint8_t> >* aOutputBufs,
1.74 + uint32_t aFlags = 0) = 0;
1.75 +protected:
1.76 + bool mInitialized;
1.77 + bool mIsWritingComplete;
1.78 +};
1.79 +}
1.80 +#endif
