1 files changed, 56 insertions, 0 deletions
diff --git a/dom/media/platforms/ffmpeg/FFmpegUtils.h b/dom/media/platforms/ffmpeg/FFmpegUtils.h
new file mode 100644
index 0000000000..fe588ed14c
--- /dev/null
+++ b/dom/media/platforms/ffmpeg/FFmpegUtils.h
@@ -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/. */
+
+#ifndef DOM_MEDIA_PLATFORMS_FFMPEG_FFMPEGUTILS_H_
+#define DOM_MEDIA_PLATFORMS_FFMPEG_FFMPEGUTILS_H_
+
+#include <cstddef>
+#include "nsStringFwd.h"
+#include "FFmpegLibWrapper.h"
+
+// This must be the last header included
+#include "FFmpegLibs.h"
+
+namespace mozilla {
+
+#if LIBAVCODEC_VERSION_MAJOR >= 57
+using FFmpegBitRate = int64_t;
+constexpr size_t FFmpegErrorMaxStringSize = AV_ERROR_MAX_STRING_SIZE;
+#else
+using FFmpegBitRate = int;
+constexpr size_t FFmpegErrorMaxStringSize = 64;
+#endif
+
+nsCString MakeErrorString(const FFmpegLibWrapper* aLib, int aErrNum);
+
+template <typename T, typename F>
+void IterateZeroTerminated(const T& aList, F&& aLambda) {
+  for (size_t i = 0; aList[i] != 0; i++) {
+    aLambda(aList[i]);
+  }
+}
+
+inline bool IsVideoCodec(AVCodecID aCodecID) {
+  switch (aCodecID) {
+    case AV_CODEC_ID_H264:
+#if LIBAVCODEC_VERSION_MAJOR >= 54
+    case AV_CODEC_ID_VP8:
+#endif
+#if LIBAVCODEC_VERSION_MAJOR >= 55
+    case AV_CODEC_ID_VP9:
+#endif
+#if LIBAVCODEC_VERSION_MAJOR >= 59
+    case AV_CODEC_ID_AV1:
+#endif
+      return true;
+    default:
+      return false;
+  }
+}
+
+}  // namespace mozilla
+
+#endif  // DOM_MEDIA_PLATFORMS_FFMPEG_FFMPEGUTILS_H_