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-rw-r--r--dom/media/SeekTarget.h90
1 files changed, 90 insertions, 0 deletions
diff --git a/dom/media/SeekTarget.h b/dom/media/SeekTarget.h
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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 */