import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

gfx/2d/DrawEventRecorder.cpp

@@ -0,0 +1,117 @@
+/* -*- Mode: C++; tab-width: 20; 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 "DrawEventRecorder.h"
+#include "PathRecording.h"
+#include "RecordingTypes.h"
+
+namespace mozilla {
+namespace gfx {
+
+using namespace std;
+
+DrawEventRecorderPrivate::DrawEventRecorderPrivate(std::ostream *aStream)
+  : mOutputStream(aStream)
+{
+}
+
+void
+DrawEventRecorderPrivate::WriteHeader()
+{
+  WriteElement(*mOutputStream, kMagicInt);
+  WriteElement(*mOutputStream, kMajorRevision);
+  WriteElement(*mOutputStream, kMinorRevision);
+}
+
+void
+DrawEventRecorderPrivate::RecordEvent(const RecordedEvent &aEvent)
+{
+  WriteElement(*mOutputStream, aEvent.mType);
+
+  aEvent.RecordToStream(*mOutputStream);
+
+  Flush();
+}
+
+DrawEventRecorderFile::DrawEventRecorderFile(const char *aFilename)
+  : DrawEventRecorderPrivate(nullptr)
+  , mOutputFile(aFilename, ofstream::binary)
+{
+  mOutputStream = &mOutputFile;
+
+  WriteHeader();
+}
+
+DrawEventRecorderFile::~DrawEventRecorderFile()
+{
+  mOutputFile.close();
+}
+
+void
+DrawEventRecorderFile::Flush()
+{
+  mOutputFile.flush();
+}
+
+bool
+DrawEventRecorderFile::IsOpen()
+{
+  return mOutputFile.is_open();
+}
+
+void
+DrawEventRecorderFile::OpenNew(const char *aFilename)
+{
+  MOZ_ASSERT(!mOutputFile.is_open());
+
+  mOutputFile.open(aFilename, ofstream::binary);
+  WriteHeader();
+}
+
+void
+DrawEventRecorderFile::Close()
+{
+  MOZ_ASSERT(mOutputFile.is_open());
+
+  mOutputFile.close();
+}
+
+DrawEventRecorderMemory::DrawEventRecorderMemory()
+  : DrawEventRecorderPrivate(nullptr)
+{
+  mOutputStream = &mMemoryStream;
+
+  WriteHeader();
+}
+
+void
+DrawEventRecorderMemory::Flush()
+{
+   mOutputStream->flush();
+}
+
+size_t
+DrawEventRecorderMemory::RecordingSize()
+{
+  return mMemoryStream.tellp();
+}
+
+bool
+DrawEventRecorderMemory::CopyRecording(char* aBuffer, size_t aBufferLen)
+{
+  return !!mMemoryStream.read(aBuffer, aBufferLen);
+}
+
+void
+DrawEventRecorderMemory::WipeRecording()
+{
+  mMemoryStream.str(std::string());
+  mMemoryStream.clear();
+
+  WriteHeader();
+}
+
+} // namespace gfx
+} // namespace mozilla