1 files changed, 58 insertions, 0 deletions
diff --git a/dom/media/webrtc/common/EncodingConstraints.h b/dom/media/webrtc/common/EncodingConstraints.h
new file mode 100644
index 0000000000..0bfa7f9f75
--- /dev/null
+++ b/dom/media/webrtc/common/EncodingConstraints.h
@@ -0,0 +1,58 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* 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/. */
+
+#ifndef _ENCODING_CONSTRAINTS_H_
+#define _ENCODING_CONSTRAINTS_H_
+
+#include <algorithm>
+#include "mozilla/Maybe.h"
+
+namespace mozilla {
+class EncodingConstraints {
+ public:
+  EncodingConstraints()
+      : maxWidth(0),
+        maxHeight(0),
+        maxFs(0),
+        maxBr(0),
+        maxPps(0),
+        maxMbps(0),
+        maxCpb(0),
+        maxDpb(0),
+        scaleDownBy(1.0) {}
+
+  bool operator==(const EncodingConstraints& constraints) const {
+    return maxWidth == constraints.maxWidth &&
+           maxHeight == constraints.maxHeight && maxFps == constraints.maxFps &&
+           maxFs == constraints.maxFs && maxBr == constraints.maxBr &&
+           maxPps == constraints.maxPps && maxMbps == constraints.maxMbps &&
+           maxCpb == constraints.maxCpb && maxDpb == constraints.maxDpb &&
+           scaleDownBy == constraints.scaleDownBy;
+  }
+
+  /**
+   * This returns true if the constraints affecting resolution are equal.
+   */
+  bool ResolutionEquals(const EncodingConstraints& constraints) const {
+    return maxWidth == constraints.maxWidth &&
+           maxHeight == constraints.maxHeight && maxFs == constraints.maxFs &&
+           scaleDownBy == constraints.scaleDownBy;
+  }
+
+  uint32_t maxWidth;
+  uint32_t maxHeight;
+  Maybe<double> maxFps;
+  uint32_t maxFs;
+  uint32_t maxBr;
+  uint32_t maxPps;
+  uint32_t maxMbps;    // macroblocks per second
+  uint32_t maxCpb;     // coded picture buffer size
+  uint32_t maxDpb;     // decoded picture buffer size
+  double scaleDownBy;  // To preserve resolution
+};
+}  // namespace mozilla
+
+#endif  // _ENCODING_CONSTRAINTS_H_