1 files changed, 56 insertions, 0 deletions
diff --git a/dom/media/wave/WaveDecoder.cpp b/dom/media/wave/WaveDecoder.cpp
new file mode 100644
index 0000000000..2aea6b4178
--- /dev/null
+++ b/dom/media/wave/WaveDecoder.cpp
@@ -0,0 +1,56 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* 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 "WaveDecoder.h"
+#include "MediaContainerType.h"
+#include "MediaDecoder.h"
+
+namespace mozilla {
+
+/* static */
+bool WaveDecoder::IsSupportedType(const MediaContainerType& aContainerType) {
+  if (!MediaDecoder::IsWaveEnabled()) {
+    return false;
+  }
+  if (aContainerType.Type() == MEDIAMIMETYPE("audio/wave") ||
+      aContainerType.Type() == MEDIAMIMETYPE("audio/x-wav") ||
+      aContainerType.Type() == MEDIAMIMETYPE("audio/wav") ||
+      aContainerType.Type() == MEDIAMIMETYPE("audio/x-pn-wav")) {
+    return (aContainerType.ExtendedType().Codecs().IsEmpty() ||
+            aContainerType.ExtendedType().Codecs() == "1" ||
+            aContainerType.ExtendedType().Codecs() == "3" ||
+            aContainerType.ExtendedType().Codecs() == "6" ||
+            aContainerType.ExtendedType().Codecs() == "7");
+  }
+
+  return false;
+}
+
+/* static */
+nsTArray<UniquePtr<TrackInfo>> WaveDecoder::GetTracksInfo(
+    const MediaContainerType& aType) {
+  nsTArray<UniquePtr<TrackInfo>> tracks;
+  if (!IsSupportedType(aType)) {
+    return tracks;
+  }
+
+  const MediaCodecs& codecs = aType.ExtendedType().Codecs();
+  if (codecs.IsEmpty()) {
+    tracks.AppendElement(
+        CreateTrackInfoWithMIMETypeAndContainerTypeExtraParameters(
+            "audio/x-wav"_ns, aType));
+    return tracks;
+  }
+
+  for (const auto& codec : codecs.Range()) {
+    tracks.AppendElement(
+        CreateTrackInfoWithMIMETypeAndContainerTypeExtraParameters(
+            "audio/wave; codecs="_ns + NS_ConvertUTF16toUTF8(codec), aType));
+  }
+  return tracks;
+}
+
+}  // namespace mozilla