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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef SEEK_TARGET_H
#define SEEK_TARGET_H
#include "TimeUnits.h"
namespace mozilla {
enum class MediaDecoderEventVisibility : int8_t { Observable, Suppressed };
// Stores the seek target. It includes (1) the time to seek to (2) type of seek
// (accurate, previous keyframe, next keyframe) (3) the type of track needs to
// performs seeking.
struct SeekTarget {
enum Type {
Invalid,
PrevSyncPoint,
Accurate,
NextFrame,
};
enum Track {
All,
AudioOnly,
VideoOnly,
};
SeekTarget()
: mTime(media::TimeUnit::Invalid()),
mType(SeekTarget::Invalid),
mTargetTrack(Track::All) {}
SeekTarget(const media::TimeUnit& aTime, Type aType,
Track aTrack = Track::All)
: mTime(aTime), mType(aType), mTargetTrack(aTrack) {
MOZ_ASSERT(mTime.IsValid());
}
SeekTarget(const SeekTarget& aOther)
: mTime(aOther.mTime),
mType(aOther.mType),
mTargetTrack(aOther.mTargetTrack) {
MOZ_ASSERT(mTime.IsValid());
}
media::TimeUnit GetTime() const {
MOZ_ASSERT(mTime.IsValid(), "Invalid SeekTarget");
return mTime;
}
void SetTime(const media::TimeUnit& aTime) {
MOZ_ASSERT(aTime.IsValid(), "Invalid SeekTarget destination");
mTime = aTime;
}
void SetType(Type aType) { mType = aType; }
bool IsFast() const { return mType == SeekTarget::Type::PrevSyncPoint; }
bool IsAccurate() const { return mType == SeekTarget::Type::Accurate; }
bool IsNextFrame() const { return mType == SeekTarget::Type::NextFrame; }
bool IsVideoOnly() const { return mTargetTrack == Track::VideoOnly; }
bool IsAudioOnly() const { return mTargetTrack == Track::AudioOnly; }
bool IsAllTracks() const { return mTargetTrack == Track::All; }
Type GetType() const { return mType; }
Track GetTrack() const { return mTargetTrack; }
static const char* TrackToStr(Track aTrack) {
switch (aTrack) {
case Track::All:
return "all tracks";
case Track::AudioOnly:
return "audio only";
case Track::VideoOnly:
return "video only";
default:
MOZ_ASSERT_UNREACHABLE("Not defined track!");
return "none";
}
}
private:
// Seek target time.
media::TimeUnit mTime;
// Whether we should seek "Fast", or "Accurate".
// "Fast" seeks to the seek point preceding mTime, whereas
// "Accurate" seeks as close as possible to mTime.
Type mType;
Track mTargetTrack;
};
} // namespace mozilla
#endif /* SEEK_TARGET_H */
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