1 files changed, 37 insertions, 0 deletions
diff --git a/third_party/libwebrtc/api/video_codecs/bitstream_parser.h b/third_party/libwebrtc/api/video_codecs/bitstream_parser.h
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index 0000000000..86ce192e49
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+++ b/third_party/libwebrtc/api/video_codecs/bitstream_parser.h
@@ -0,0 +1,37 @@
+/*
+ *  Copyright (c) 2019 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef API_VIDEO_CODECS_BITSTREAM_PARSER_H_
+#define API_VIDEO_CODECS_BITSTREAM_PARSER_H_
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include "absl/types/optional.h"
+#include "api/array_view.h"
+
+namespace webrtc {
+
+// This class is an interface for bitstream parsers.
+class BitstreamParser {
+ public:
+  virtual ~BitstreamParser() = default;
+
+  // Parse an additional chunk of the bitstream.
+  virtual void ParseBitstream(rtc::ArrayView<const uint8_t> bitstream) = 0;
+
+  // Get the last extracted QP value from the parsed bitstream. If no QP
+  // value could be parsed, returns absl::nullopt.
+  virtual absl::optional<int> GetLastSliceQp() const = 0;
+};
+
+}  // namespace webrtc
+
+#endif  // API_VIDEO_CODECS_BITSTREAM_PARSER_H_