1 files changed, 27 insertions, 0 deletions
diff --git a/dom/media/VorbisUtils.h b/dom/media/VorbisUtils.h
new file mode 100644
index 000000000..36ad21448
--- /dev/null
+++ b/dom/media/VorbisUtils.h
@@ -0,0 +1,27 @@
+/* -*- 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/. */
+
+#ifndef VORBISUTILS_H_
+#define VORBISUTILS_H_
+
+#ifdef MOZ_SAMPLE_TYPE_S16
+#include <ogg/os_types.h>
+typedef ogg_int32_t VorbisPCMValue;
+
+#define MOZ_CLIP_TO_15(x) ((x)<-32768?-32768:(x)<=32767?(x):32767)
+// Convert the output of vorbis_synthesis_pcmout to a AudioDataValue
+#define MOZ_CONVERT_VORBIS_SAMPLE(x) \
+ (static_cast<AudioDataValue>(MOZ_CLIP_TO_15((x)>>9)))
+
+#else /* MOZ_SAMPLE_TYPE_FLOAT32 */
+
+typedef float VorbisPCMValue;
+
+#define MOZ_CONVERT_VORBIS_SAMPLE(x) (x)
+
+#endif
+
+#endif /* VORBISUTILS_H_ */