import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

dom/media/SimpleImageBuffer.cpp

@@ -0,0 +1,53 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* vim:set ts=4 sw=4 sts=4 ci et: */
+/* 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 "SimpleImageBuffer.h"
+#include "mozilla/NullPtr.h"
+
+namespace mozilla {
+
+void
+SimpleImageBuffer::SetImage(const unsigned char* frame, unsigned int size, int width, int height)
+{
+  mWidth = width;
+  mHeight = height;
+  if (!mBuffer || (size > mBufferSize)) {
+    if (mBuffer) {
+      delete[] mBuffer;
+      mBuffer = nullptr;
+    }
+    mBufferSize = size;
+    if (size > 0) {
+      mBuffer = new unsigned char[size];
+    }
+  }
+
+  if (mBuffer) {
+    if (frame && (size > 0)) {
+      memcpy((void *)mBuffer, (const void*)frame, size);
+    }
+    mSize = size;
+  }
+}
+
+void
+SimpleImageBuffer::Copy(const SimpleImageBuffer* aImage)
+{
+  if (aImage) {
+    SetImage(aImage->mBuffer, aImage->mSize, aImage->mWidth, aImage->mHeight);
+  }
+}
+
+const unsigned char*
+SimpleImageBuffer::GetImage(unsigned int* size) const
+{
+  if (size) {
+    *size = mSize;
+  }
+  return mBuffer;
+}
+
+} // namespace mozilla