157 lines
3.7 KiB
C++
157 lines
3.7 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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 mozilla_SourceBufferAttributes_h_
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#define mozilla_SourceBufferAttributes_h_
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#include "TimeUnits.h"
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#include "mozilla/dom/SourceBufferBinding.h"
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#include "mozilla/Maybe.h"
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namespace mozilla {
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class SourceBufferAttributes {
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public:
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// Current state as per Segment Parser Loop Algorithm
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// http://w3c.github.io/media-source/index.html#sourcebuffer-segment-parser-loop
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enum class AppendState
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{
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WAITING_FOR_SEGMENT,
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PARSING_INIT_SEGMENT,
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PARSING_MEDIA_SEGMENT,
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};
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explicit SourceBufferAttributes(bool aGenerateTimestamp)
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: mGenerateTimestamps(aGenerateTimestamp)
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, mAppendWindowStart(0)
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, mAppendWindowEnd(PositiveInfinity<double>())
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, mAppendMode(dom::SourceBufferAppendMode::Segments)
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, mApparentTimestampOffset(0)
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, mAppendState(AppendState::WAITING_FOR_SEGMENT)
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{}
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SourceBufferAttributes(const SourceBufferAttributes& aOther) = default;
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double GetAppendWindowStart() const
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{
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return mAppendWindowStart;
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}
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double GetAppendWindowEnd() const
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{
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return mAppendWindowEnd;
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}
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void SetAppendWindowStart(double aWindowStart)
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{
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mAppendWindowStart = aWindowStart;
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}
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void SetAppendWindowEnd(double aWindowEnd)
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{
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mAppendWindowEnd = aWindowEnd;
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}
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double GetApparentTimestampOffset() const
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{
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return mApparentTimestampOffset;
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}
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void SetApparentTimestampOffset(double aTimestampOffset)
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{
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mApparentTimestampOffset = aTimestampOffset;
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mTimestampOffset = media::TimeUnit::FromSeconds(aTimestampOffset);
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}
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media::TimeUnit GetTimestampOffset() const
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{
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return mTimestampOffset;
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}
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void SetTimestampOffset(const media::TimeUnit& aTimestampOffset)
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{
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mTimestampOffset = aTimestampOffset;
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mApparentTimestampOffset = aTimestampOffset.ToSeconds();
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}
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dom::SourceBufferAppendMode GetAppendMode() const
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{
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return mAppendMode;
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}
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void SetAppendMode(dom::SourceBufferAppendMode aAppendMode)
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{
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mAppendMode = aAppendMode;
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}
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void SetGroupStartTimestamp(const media::TimeUnit& aGroupStartTimestamp)
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{
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mGroupStartTimestamp = Some(aGroupStartTimestamp);
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}
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media::TimeUnit GetGroupStartTimestamp() const
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{
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return mGroupStartTimestamp.ref();
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}
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bool HaveGroupStartTimestamp() const
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{
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return mGroupStartTimestamp.isSome();
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}
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void ResetGroupStartTimestamp()
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{
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mGroupStartTimestamp.reset();
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}
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void RestartGroupStartTimestamp()
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{
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mGroupStartTimestamp = Some(mGroupEndTimestamp);
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}
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media::TimeUnit GetGroupEndTimestamp() const
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{
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return mGroupEndTimestamp;
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}
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void SetGroupEndTimestamp(const media::TimeUnit& aGroupEndTimestamp)
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{
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mGroupEndTimestamp = aGroupEndTimestamp;
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}
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AppendState GetAppendState() const
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{
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return mAppendState;
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}
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void SetAppendState(AppendState aState)
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{
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mAppendState = aState;
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}
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// mGenerateTimestamp isn't mutable once the source buffer has been constructed
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bool mGenerateTimestamps;
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SourceBufferAttributes& operator=(const SourceBufferAttributes& aOther) = default;
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private:
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SourceBufferAttributes() = delete;
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double mAppendWindowStart;
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double mAppendWindowEnd;
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dom::SourceBufferAppendMode mAppendMode;
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double mApparentTimestampOffset;
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media::TimeUnit mTimestampOffset;
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Maybe<media::TimeUnit> mGroupStartTimestamp;
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media::TimeUnit mGroupEndTimestamp;
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// The current append state as per https://w3c.github.io/media-source/#sourcebuffer-append-state
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AppendState mAppendState;
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};
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} // end namespace mozilla
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#endif /* mozilla_SourceBufferAttributes_h_ */
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