зеркало из https://github.com/mozilla/gecko-dev.git
93 строки
2.4 KiB
C++
93 строки
2.4 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef SEEK_TARGET_H
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#define SEEK_TARGET_H
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#include "TimeUnits.h"
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namespace mozilla {
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enum class MediaDecoderEventVisibility : int8_t
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{
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Observable,
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Suppressed
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};
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// Stores the seek target; the time to seek to, and whether an Accurate,
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// "Fast" (nearest keyframe), or "Video Only" (no audio seek) seek was
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// requested.
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struct SeekTarget
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{
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enum Type
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{
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Invalid,
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PrevSyncPoint,
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Accurate,
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NextFrame,
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};
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SeekTarget()
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: mTime(media::TimeUnit::Invalid())
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, mType(SeekTarget::Invalid)
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, mVideoOnly(false)
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{
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}
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SeekTarget(int64_t aTimeUsecs, Type aType, bool aVideoOnly = false)
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: mTime(media::TimeUnit::FromMicroseconds(aTimeUsecs))
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, mType(aType)
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, mVideoOnly(aVideoOnly)
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{
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}
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SeekTarget(const media::TimeUnit& aTime, Type aType, bool aVideoOnly = false)
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: mTime(aTime)
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, mType(aType)
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, mVideoOnly(aVideoOnly)
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{
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}
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SeekTarget(const SeekTarget& aOther)
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: mTime(aOther.mTime)
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, mType(aOther.mType)
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, mVideoOnly(aOther.mVideoOnly)
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{
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}
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bool IsValid() const { return mType != SeekTarget::Invalid; }
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void Reset()
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{
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mTime = media::TimeUnit::Invalid();
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mType = SeekTarget::Invalid;
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mVideoOnly = false;
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}
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media::TimeUnit GetTime() const
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{
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NS_ASSERTION(mTime.IsValid(), "Invalid SeekTarget");
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return mTime;
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}
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void SetTime(const media::TimeUnit& aTime)
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{
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NS_ASSERTION(aTime.IsValid(), "Invalid SeekTarget destination");
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mTime = aTime;
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}
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void SetType(Type aType) { mType = aType; }
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void SetVideoOnly(bool aVideoOnly) { mVideoOnly = aVideoOnly; }
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bool IsFast() const { return mType == SeekTarget::Type::PrevSyncPoint; }
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bool IsAccurate() const { return mType == SeekTarget::Type::Accurate; }
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bool IsNextFrame() const { return mType == SeekTarget::Type::NextFrame; }
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bool IsVideoOnly() const { return mVideoOnly; }
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private:
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// Seek target time.
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media::TimeUnit mTime;
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// Whether we should seek "Fast", or "Accurate".
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// "Fast" seeks to the seek point preceding mTime, whereas
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// "Accurate" seeks as close as possible to mTime.
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Type mType;
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bool mVideoOnly;
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};
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} // namespace mozilla
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#endif /* SEEK_TARGET_H */
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