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95f02fc198
This changes EncodedFrame to behave more like MediaData, so that EncodedFrame can be used with the MediaQueue data structure. It also provides a somewhat more consistent interface across media data types. Differential Revision: https://phabricator.services.mozilla.com/D35386 --HG-- extra : moz-landing-system : lando
72 lines
2.3 KiB
C++
72 lines
2.3 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 EncodedFrame_h_
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#define EncodedFrame_h_
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#include "nsISupportsImpl.h"
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#include "VideoUtils.h"
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namespace mozilla {
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// Represent an encoded frame emitted by an encoder
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class EncodedFrame final {
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NS_INLINE_DECL_THREADSAFE_REFCOUNTING(EncodedFrame)
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public:
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EncodedFrame() : mTime(0), mDuration(0), mFrameType(UNKNOWN) {}
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enum FrameType {
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VP8_I_FRAME, // VP8 intraframe
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VP8_P_FRAME, // VP8 predicted frame
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OPUS_AUDIO_FRAME, // Opus audio frame
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UNKNOWN // FrameType not set
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};
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void SwapInFrameData(nsTArray<uint8_t>& aData) {
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mFrameData.SwapElements(aData);
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}
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nsresult SwapOutFrameData(nsTArray<uint8_t>& aData) {
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if (mFrameType != UNKNOWN) {
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// Reset this frame type to UNKNOWN once the data is swapped out.
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mFrameData.SwapElements(aData);
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mFrameType = UNKNOWN;
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return NS_OK;
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}
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return NS_ERROR_FAILURE;
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}
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const nsTArray<uint8_t>& GetFrameData() const { return mFrameData; }
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// Timestamp in microseconds
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uint64_t mTime;
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// The playback duration of this packet. The unit is determined by the use
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// case. For VP8 the unit should be microseconds. For opus this is the number
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// of samples.
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uint64_t mDuration;
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// Represent what is in the FrameData
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FrameType mFrameType;
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uint64_t GetEndTime() const {
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// Defend against untested types. This assert can be removed but we want
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// to make sure other types are correctly accounted for.
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MOZ_ASSERT(mFrameType == OPUS_AUDIO_FRAME || mFrameType == VP8_I_FRAME ||
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mFrameType == VP8_P_FRAME);
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if (mFrameType == OPUS_AUDIO_FRAME) {
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// See bug 1356054 for discussion around standardization of time units
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// (can remove videoutils import when this goes)
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return mTime + FramesToUsecs(mDuration, 48000).value();
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} else {
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return mTime + mDuration;
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}
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}
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private:
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// Private destructor, to discourage deletion outside of Release():
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~EncodedFrame() {}
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// Encoded data
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nsTArray<uint8_t> mFrameData;
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};
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} // namespace mozilla
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#endif // EncodedFrame_h_
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