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62 lines
1.5 KiB
C++
62 lines
1.5 KiB
C++
/* -*- Mode: C++; tab-width: 2; 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 file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "StreamBuffer.h"
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#include <algorithm>
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namespace mozilla {
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StreamTime
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StreamBuffer::GetEnd() const
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{
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StreamTime t = mTracksKnownTime;
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for (uint32_t i = 0; i < mTracks.Length(); ++i) {
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Track* track = mTracks[i];
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if (!track->IsEnded()) {
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t = std::min(t, track->GetEndTimeRoundDown());
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}
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}
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return t;
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}
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StreamBuffer::Track*
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StreamBuffer::FindTrack(TrackID aID)
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{
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if (aID == TRACK_NONE)
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return nullptr;
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for (uint32_t i = 0; i < mTracks.Length(); ++i) {
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Track* track = mTracks[i];
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if (track->GetID() == aID) {
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return track;
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}
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}
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return nullptr;
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}
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void
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StreamBuffer::ForgetUpTo(StreamTime aTime)
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{
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// Round to nearest 50ms so we don't spend too much time pruning segments.
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const MediaTime roundTo = MillisecondsToMediaTime(50);
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StreamTime forget = (aTime/roundTo)*roundTo;
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if (forget <= mForgottenTime) {
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return;
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}
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mForgottenTime = forget;
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for (uint32_t i = 0; i < mTracks.Length(); ++i) {
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Track* track = mTracks[i];
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if (track->IsEnded() && track->GetEndTimeRoundDown() <= forget) {
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mTracks.RemoveElementAt(i);
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--i;
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continue;
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}
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TrackTicks forgetTo = std::min(track->GetEnd() - 1, track->TimeToTicksRoundDown(forget));
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track->ForgetUpTo(forgetTo);
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}
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}
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}
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