Motown in-proc streaming framework used to implement media services.

services/media/framework/models/demand.h

Index: services/media/framework/models/demand.h
diff --git a/services/media/framework/models/demand.h b/services/media/framework/models/demand.h
new file mode 100644
index 0000000000000000000000000000000000000000..843923dca5e107a0ea1c3321b6bdeb85cd23086f
--- /dev/null
+++ b/services/media/framework/models/demand.h
@@ -0,0 +1,28 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef MOJO_MEDIA_MODELS_DEMAND_H_
+#define MOJO_MEDIA_MODELS_DEMAND_H_
+
+namespace mojo {
+namespace media {
+
+// Expresses packet demand for signalling upstream in a graph.
+enum class Demand {
+  // Ordered such that (kNegative < kNeutral < kPositive).
+
+  // No packet can currently be accepted.
+  kNegative = -1,
+
+  // A packet can be accepted but is not required to meet timing constraints.
+  kNeutral = 0,
+
+  // A packet is required to meet timing constraints.
+  kPositive = 1
+};
+
+}  // namespace media
+}  // namespace mojo
+
+#endif // MOJO_MEDIA_MODELS_DEMAND_H_