Add m-esr52 at 52.6.0

1 files changed, 116 insertions, 0 deletions

diff --git a/dom/media/MediaStreamListener.cpp b/dom/media/MediaStreamListener.cpp
new file mode 100644
index 000000000..d9fbb6e29
--- /dev/null
+++ b/dom/media/MediaStreamListener.cpp
@@ -0,0 +1,116 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-*/
+/* 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/. */
+
+#include "MediaStreamListener.h"
+
+#include "AudioSegment.h"
+#include "VideoSegment.h"
+#include "StreamTracks.h"
+
+namespace mozilla {
+
+#ifdef LOG
+#undef LOG
+#endif
+
+#define LOG(type, msg) MOZ_LOG(gMediaStreamGraphLog, type, msg)
+
+void
+DirectMediaStreamTrackListener::MirrorAndDisableSegment(AudioSegment& aFrom,
+                                                        AudioSegment& aTo)
+{
+  aTo.Clear();
+  aTo.AppendNullData(aFrom.GetDuration());
+}
+
+void
+DirectMediaStreamTrackListener::MirrorAndDisableSegment(VideoSegment& aFrom,
+                                                        VideoSegment& aTo,
+                                                        DisabledTrackMode aMode)
+{
+  aTo.Clear();
+  if (aMode == DisabledTrackMode::SILENCE_BLACK) {
+    for (VideoSegment::ChunkIterator it(aFrom); !it.IsEnded(); it.Next()) {
+      aTo.AppendFrame(do_AddRef(it->mFrame.GetImage()),
+                      it->GetDuration(),
+                      it->mFrame.GetIntrinsicSize(),
+                      it->GetPrincipalHandle(),
+                      true);
+    }
+  } else if (aMode == DisabledTrackMode::SILENCE_FREEZE) {
+    aTo.AppendNullData(aFrom.GetDuration());
+  }
+}
+
+void
+DirectMediaStreamTrackListener::NotifyRealtimeTrackDataAndApplyTrackDisabling(MediaStreamGraph* aGraph,
+                                                                             StreamTime aTrackOffset,
+                                                                             MediaSegment& aMedia)
+{
+  if (mDisabledFreezeCount == 0 && mDisabledBlackCount == 0) {
+    NotifyRealtimeTrackData(aGraph, aTrackOffset, aMedia);
+    return;
+  }
+
+  DisabledTrackMode mode = mDisabledBlackCount > 0
+                         ? DisabledTrackMode::SILENCE_BLACK
+                         : DisabledTrackMode::SILENCE_FREEZE;
+  if (!mMedia) {
+    mMedia = aMedia.CreateEmptyClone();
+  }
+  if (aMedia.GetType() == MediaSegment::AUDIO) {
+    MirrorAndDisableSegment(static_cast<AudioSegment&>(aMedia),
+                            static_cast<AudioSegment&>(*mMedia));
+  } else if (aMedia.GetType() == MediaSegment::VIDEO) {
+    MirrorAndDisableSegment(static_cast<VideoSegment&>(aMedia),
+                            static_cast<VideoSegment&>(*mMedia),
+                            mode);
+  } else {
+    MOZ_CRASH("Unsupported media type");
+  }
+  NotifyRealtimeTrackData(aGraph, aTrackOffset, *mMedia);
+}
+
+void
+DirectMediaStreamTrackListener::IncreaseDisabled(DisabledTrackMode aMode)
+{
+  if (aMode == DisabledTrackMode::SILENCE_FREEZE) {
+    ++mDisabledFreezeCount;
+  } else if (aMode == DisabledTrackMode::SILENCE_BLACK) {
+    ++mDisabledBlackCount;
+  } else {
+    MOZ_ASSERT(false, "Unknown disabled mode");
+  }
+
+  LOG(LogLevel::Debug, ("DirectMediaStreamTrackListener %p increased disabled "
+                        "mode %s. Current counts are: freeze=%d, black=%d",
+                        this,
+                        aMode == DisabledTrackMode::SILENCE_FREEZE ? "freeze" : "black",
+                        int32_t(mDisabledFreezeCount),
+                        int32_t(mDisabledBlackCount)));
+}
+
+void
+DirectMediaStreamTrackListener::DecreaseDisabled(DisabledTrackMode aMode)
+{
+  if (aMode == DisabledTrackMode::SILENCE_FREEZE) {
+    --mDisabledFreezeCount;
+    MOZ_ASSERT(mDisabledFreezeCount >= 0, "Double decrease");
+  } else if (aMode == DisabledTrackMode::SILENCE_BLACK) {
+    --mDisabledBlackCount;
+    MOZ_ASSERT(mDisabledBlackCount >= 0, "Double decrease");
+  } else {
+    MOZ_ASSERT(false, "Unknown disabled mode");
+  }
+
+  LOG(LogLevel::Debug, ("DirectMediaStreamTrackListener %p decreased disabled "
+                        "mode %s. Current counts are: freeze=%d, black=%d",
+                        this,
+                        aMode == DisabledTrackMode::SILENCE_FREEZE ? "freeze" : "black",
+                        int32_t(mDisabledFreezeCount),
+                        int32_t(mDisabledBlackCount)));
+}
+
+} // namespace mozilla