зеркало из https://github.com/mozilla/gecko-dev.git
99 строки
3.7 KiB
C++
99 строки
3.7 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 "MediaStreamListener.h"
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#include "AudioSegment.h"
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#include "VideoSegment.h"
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#include "StreamTracks.h"
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namespace mozilla {
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#ifdef LOG
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# undef LOG
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#endif
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#define LOG(type, msg) MOZ_LOG(gMediaStreamGraphLog, type, msg)
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void DirectMediaStreamTrackListener::MirrorAndDisableSegment(
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AudioSegment& aFrom, AudioSegment& aTo) {
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aTo.AppendNullData(aFrom.GetDuration());
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}
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void DirectMediaStreamTrackListener::MirrorAndDisableSegment(
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VideoSegment& aFrom, VideoSegment& aTo, DisabledTrackMode aMode) {
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if (aMode == DisabledTrackMode::SILENCE_BLACK) {
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for (VideoSegment::ChunkIterator it(aFrom); !it.IsEnded(); it.Next()) {
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aTo.AppendFrame(do_AddRef(it->mFrame.GetImage()),
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it->mFrame.GetIntrinsicSize(), it->GetPrincipalHandle(),
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true);
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aTo.ExtendLastFrameBy(it->GetDuration());
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}
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} else if (aMode == DisabledTrackMode::SILENCE_FREEZE) {
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aTo.AppendNullData(aFrom.GetDuration());
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}
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}
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void DirectMediaStreamTrackListener::
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NotifyRealtimeTrackDataAndApplyTrackDisabling(MediaStreamGraph* aGraph,
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StreamTime aTrackOffset,
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MediaSegment& aMedia) {
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if (mDisabledFreezeCount == 0 && mDisabledBlackCount == 0) {
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NotifyRealtimeTrackData(aGraph, aTrackOffset, aMedia);
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return;
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}
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DisabledTrackMode mode = mDisabledBlackCount > 0
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? DisabledTrackMode::SILENCE_BLACK
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: DisabledTrackMode::SILENCE_FREEZE;
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UniquePtr<MediaSegment> media(aMedia.CreateEmptyClone());
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if (aMedia.GetType() == MediaSegment::AUDIO) {
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MirrorAndDisableSegment(static_cast<AudioSegment&>(aMedia),
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static_cast<AudioSegment&>(*media));
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} else if (aMedia.GetType() == MediaSegment::VIDEO) {
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MirrorAndDisableSegment(static_cast<VideoSegment&>(aMedia),
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static_cast<VideoSegment&>(*media), mode);
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} else {
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MOZ_CRASH("Unsupported media type");
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}
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NotifyRealtimeTrackData(aGraph, aTrackOffset, *media);
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}
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void DirectMediaStreamTrackListener::IncreaseDisabled(DisabledTrackMode aMode) {
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if (aMode == DisabledTrackMode::SILENCE_FREEZE) {
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++mDisabledFreezeCount;
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} else if (aMode == DisabledTrackMode::SILENCE_BLACK) {
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++mDisabledBlackCount;
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} else {
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MOZ_ASSERT(false, "Unknown disabled mode");
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}
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LOG(LogLevel::Debug,
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("DirectMediaStreamTrackListener %p increased disabled "
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"mode %s. Current counts are: freeze=%d, black=%d",
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this, aMode == DisabledTrackMode::SILENCE_FREEZE ? "freeze" : "black",
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int32_t(mDisabledFreezeCount), int32_t(mDisabledBlackCount)));
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}
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void DirectMediaStreamTrackListener::DecreaseDisabled(DisabledTrackMode aMode) {
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if (aMode == DisabledTrackMode::SILENCE_FREEZE) {
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--mDisabledFreezeCount;
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MOZ_ASSERT(mDisabledFreezeCount >= 0, "Double decrease");
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} else if (aMode == DisabledTrackMode::SILENCE_BLACK) {
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--mDisabledBlackCount;
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MOZ_ASSERT(mDisabledBlackCount >= 0, "Double decrease");
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} else {
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MOZ_ASSERT(false, "Unknown disabled mode");
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}
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LOG(LogLevel::Debug,
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("DirectMediaStreamTrackListener %p decreased disabled "
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"mode %s. Current counts are: freeze=%d, black=%d",
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this, aMode == DisabledTrackMode::SILENCE_FREEZE ? "freeze" : "black",
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int32_t(mDisabledFreezeCount), int32_t(mDisabledBlackCount)));
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}
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} // namespace mozilla
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