зеркало из https://github.com/mozilla/gecko-dev.git
65 строки
2.2 KiB
C++
65 строки
2.2 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 "mozilla/media/MediaUtils.h"
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#include "TimeUnits.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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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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using ConstFrameData = const media::Refcountable<nsTArray<uint8_t>>;
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using FrameData = media::Refcountable<nsTArray<uint8_t>>;
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EncodedFrame(const media::TimeUnit& aTime, uint64_t aDuration,
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uint64_t aDurationBase, FrameType aFrameType,
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RefPtr<ConstFrameData> aData)
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: mTime(aTime),
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mDuration(aDuration),
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mDurationBase(aDurationBase),
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mFrameType(aFrameType),
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mFrameData(std::move(aData)) {
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MOZ_ASSERT(mFrameData);
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MOZ_ASSERT_IF(mFrameType == VP8_I_FRAME, mDurationBase == PR_USEC_PER_SEC);
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MOZ_ASSERT_IF(mFrameType == VP8_P_FRAME, mDurationBase == PR_USEC_PER_SEC);
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MOZ_ASSERT_IF(mFrameType == OPUS_AUDIO_FRAME, mDurationBase == 48000);
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}
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// Timestamp in microseconds
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const media::TimeUnit mTime;
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// The playback duration of this packet in mDurationBase.
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const uint64_t mDuration;
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// The time base of mDuration.
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const uint64_t mDurationBase;
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// Represent what is in the FrameData
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const FrameType mFrameType;
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// Encoded data
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const RefPtr<ConstFrameData> mFrameData;
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// The end time of the frame in microseconds.
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media::TimeUnit GetEndTime() const {
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return mTime + FramesToTimeUnit(mDuration, mDurationBase);
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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() = default;
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};
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} // namespace mozilla
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#endif // EncodedFrame_h_
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