1 files changed, 104 insertions, 0 deletions
diff --git a/dom/media/SeekTarget.h b/dom/media/SeekTarget.h
new file mode 100644
index 000000000..cb5cfd630
--- /dev/null
+++ b/dom/media/SeekTarget.h
@@ -0,0 +1,104 @@
+/* -*- 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; the time to seek to, and whether an Accurate,
+// "Fast" (nearest keyframe), or "Video Only" (no audio seek) seek was
+// requested.
+struct SeekTarget {
+  enum Type {
+    Invalid,
+    PrevSyncPoint,
+    Accurate,
+    NextFrame,
+  };
+  SeekTarget()
+    : mTime(media::TimeUnit::Invalid())
+    , mType(SeekTarget::Invalid)
+    , mVideoOnly(false)
+  {
+  }
+  SeekTarget(int64_t aTimeUsecs,
+             Type aType,
+             bool aVideoOnly = false)
+    : mTime(media::TimeUnit::FromMicroseconds(aTimeUsecs))
+    , mType(aType)
+    , mVideoOnly(aVideoOnly)
+  {
+  }
+  SeekTarget(const media::TimeUnit& aTime,
+             Type aType,
+             bool aVideoOnly = false)
+    : mTime(aTime)
+    , mType(aType)
+    , mVideoOnly(aVideoOnly)
+  {
+  }
+  SeekTarget(const SeekTarget& aOther)
+    : mTime(aOther.mTime)
+    , mType(aOther.mType)
+    , mVideoOnly(aOther.mVideoOnly)
+  {
+  }
+  bool IsValid() const {
+    return mType != SeekTarget::Invalid;
+  }
+  void Reset() {
+    mTime = media::TimeUnit::Invalid();
+    mType = SeekTarget::Invalid;
+    mVideoOnly = false;
+  }
+  media::TimeUnit GetTime() const {
+    NS_ASSERTION(mTime.IsValid(), "Invalid SeekTarget");
+    return mTime;
+  }
+  void SetTime(const media::TimeUnit& aTime) {
+    NS_ASSERTION(aTime.IsValid(), "Invalid SeekTarget destination");
+    mTime = aTime;
+  }
+  void SetType(Type aType) {
+    mType = aType;
+  }
+  void SetVideoOnly(bool aVideoOnly) {
+    mVideoOnly = aVideoOnly;
+  }
+  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 mVideoOnly;
+  }
+
+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;
+  bool mVideoOnly;
+};
+
+} // namespace mozilla
+
+#endif /* SEEK_TARGET_H */