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91 lines
2.7 KiB
C++
91 lines
2.7 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 { Observable, Suppressed };
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// Stores the seek target. It includes (1) the time to seek to (2) type of seek
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// (accurate, previous keyframe, next keyframe) (3) the type of track needs to
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// performs seeking.
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struct SeekTarget {
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enum Type {
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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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enum Track {
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All,
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AudioOnly,
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VideoOnly,
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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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mTargetTrack(Track::All) {}
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SeekTarget(const media::TimeUnit& aTime, Type aType,
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Track aTrack = Track::All)
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: mTime(aTime), mType(aType), mTargetTrack(aTrack) {
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MOZ_ASSERT(mTime.IsValid());
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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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mTargetTrack(aOther.mTargetTrack) {
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MOZ_ASSERT(mTime.IsValid());
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}
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media::TimeUnit GetTime() const {
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MOZ_ASSERT(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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MOZ_ASSERT(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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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 mTargetTrack == Track::VideoOnly; }
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bool IsAudioOnly() const { return mTargetTrack == Track::AudioOnly; }
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bool IsAllTracks() const { return mTargetTrack == Track::All; }
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Type GetType() const { return mType; }
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Track GetTrack() const { return mTargetTrack; }
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static const char* TrackToStr(Track aTrack) {
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switch (aTrack) {
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case Track::All:
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return "all tracks";
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case Track::AudioOnly:
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return "audio only";
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case Track::VideoOnly:
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return "video only";
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default:
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MOZ_ASSERT_UNREACHABLE("Not defined track!");
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return "none";
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}
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}
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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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Track mTargetTrack;
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};
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} // namespace mozilla
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#endif /* SEEK_TARGET_H */
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