1 files changed, 45 insertions, 0 deletions
diff --git a/third_party/libwebrtc/modules/video_coding/utility/qp_parser.h b/third_party/libwebrtc/modules/video_coding/utility/qp_parser.h
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+++ b/third_party/libwebrtc/modules/video_coding/utility/qp_parser.h
@@ -0,0 +1,45 @@
+/*
+ *  Copyright (c) 2021 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 MODULES_VIDEO_CODING_UTILITY_QP_PARSER_H_
+#define MODULES_VIDEO_CODING_UTILITY_QP_PARSER_H_
+
+#include "absl/types/optional.h"
+#include "api/video/video_codec_constants.h"
+#include "api/video/video_codec_type.h"
+#include "common_video/h264/h264_bitstream_parser.h"
+#include "rtc_base/synchronization/mutex.h"
+
+namespace webrtc {
+class QpParser {
+ public:
+  absl::optional<uint32_t> Parse(VideoCodecType codec_type,
+                                 size_t spatial_idx,
+                                 const uint8_t* frame_data,
+                                 size_t frame_size);
+
+ private:
+  // A thread safe wrapper for H264 bitstream parser.
+  class H264QpParser {
+   public:
+    absl::optional<uint32_t> Parse(const uint8_t* frame_data,
+                                   size_t frame_size);
+
+   private:
+    Mutex mutex_;
+    H264BitstreamParser bitstream_parser_ RTC_GUARDED_BY(mutex_);
+  };
+
+  H264QpParser h264_parsers_[kMaxSimulcastStreams];
+};
+
+}  // namespace webrtc
+
+#endif  // MODULES_VIDEO_CODING_UTILITY_QP_PARSER_H_