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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 mozilla_SourceBufferAttributes_h_
#define mozilla_SourceBufferAttributes_h_
#include "TimeUnits.h"
#include "mozilla/dom/SourceBufferBinding.h"
#include "mozilla/Maybe.h"
namespace mozilla {
class SourceBufferAttributes {
public:
// Current state as per Segment Parser Loop Algorithm
// http://w3c.github.io/media-source/index.html#sourcebuffer-segment-parser-loop
enum class AppendState {
WAITING_FOR_SEGMENT,
PARSING_INIT_SEGMENT,
PARSING_MEDIA_SEGMENT,
};
explicit SourceBufferAttributes(bool aGenerateTimestamp)
: mGenerateTimestamps(aGenerateTimestamp),
mAppendWindowStart(0),
mAppendWindowEnd(PositiveInfinity<double>()),
mAppendMode(dom::SourceBufferAppendMode::Segments),
mApparentTimestampOffset(0),
mAppendState(AppendState::WAITING_FOR_SEGMENT) {}
SourceBufferAttributes(const SourceBufferAttributes& aOther) = default;
double GetAppendWindowStart() const { return mAppendWindowStart; }
double GetAppendWindowEnd() const { return mAppendWindowEnd; }
void SetAppendWindowStart(double aWindowStart) {
mAppendWindowStart = aWindowStart;
}
void SetAppendWindowEnd(double aWindowEnd) { mAppendWindowEnd = aWindowEnd; }
double GetApparentTimestampOffset() const { return mApparentTimestampOffset; }
void SetApparentTimestampOffset(double aTimestampOffset) {
mApparentTimestampOffset = aTimestampOffset;
mTimestampOffset = media::TimeUnit::FromSeconds(aTimestampOffset);
}
media::TimeUnit GetTimestampOffset() const { return mTimestampOffset; }
void SetTimestampOffset(const media::TimeUnit& aTimestampOffset) {
mTimestampOffset = aTimestampOffset;
mApparentTimestampOffset = aTimestampOffset.ToSeconds();
}
dom::SourceBufferAppendMode GetAppendMode() const { return mAppendMode; }
void SetAppendMode(dom::SourceBufferAppendMode aAppendMode) {
mAppendMode = aAppendMode;
}
void SetGroupStartTimestamp(const media::TimeUnit& aGroupStartTimestamp) {
mGroupStartTimestamp = Some(aGroupStartTimestamp);
}
media::TimeUnit GetGroupStartTimestamp() const {
return mGroupStartTimestamp.ref();
}
bool HaveGroupStartTimestamp() const { return mGroupStartTimestamp.isSome(); }
void ResetGroupStartTimestamp() { mGroupStartTimestamp.reset(); }
void RestartGroupStartTimestamp() {
mGroupStartTimestamp = Some(mGroupEndTimestamp);
}
media::TimeUnit GetGroupEndTimestamp() const { return mGroupEndTimestamp; }
void SetGroupEndTimestamp(const media::TimeUnit& aGroupEndTimestamp) {
mGroupEndTimestamp = aGroupEndTimestamp;
}
AppendState GetAppendState() const { return mAppendState; }
void SetAppendState(AppendState aState) { mAppendState = aState; }
// mGenerateTimestamp isn't mutable once the source buffer has been
// constructed
bool mGenerateTimestamps;
SourceBufferAttributes& operator=(const SourceBufferAttributes& aOther) =
default;
private:
SourceBufferAttributes() = delete;
double mAppendWindowStart;
double mAppendWindowEnd;
dom::SourceBufferAppendMode mAppendMode;
double mApparentTimestampOffset;
media::TimeUnit mTimestampOffset;
Maybe<media::TimeUnit> mGroupStartTimestamp;
media::TimeUnit mGroupEndTimestamp;
// The current append state as per
// https://w3c.github.io/media-source/#sourcebuffer-append-state
AppendState mAppendState;
};
} // end namespace mozilla
#endif /* mozilla_SourceBufferAttributes_h_ */
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