Extract bitrate allocation of spatial/temporal layers out of codec impl.

webrtc/common_types.h

 /*
  *  Copyright (c) 2012 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 WEBRTC_COMMON_TYPES_H_
 #define WEBRTC_COMMON_TYPES_H_
 
 #include <assert.h>
 #include <stddef.h>
 #include <string.h>
 
 #include <string>
 #include <vector>
 
+#include "webrtc/base/optional.h"
 #include "webrtc/common_video/rotation.h"
 #include "webrtc/typedefs.h"
 
 #if defined(_MSC_VER)
 // Disable "new behavior: elements of array will be default initialized"
 // warning. Affects OverUseDetectorOptions.
 #pragma warning(disable : 4351)
 #endif
 
 #if defined(WEBRTC_EXPORT)
@@ skipping 484 matching lines @@
   bool pictureLossIndicationOn;
   bool feedbackModeOn;
   VideoCodecComplexity complexity;
   VP8ResilienceMode resilience;
   unsigned char numberOfTemporalLayers;
   bool denoisingOn;
   bool errorConcealmentOn;
   bool automaticResizeOn;
   bool frameDroppingOn;
   int keyFrameInterval;
-  const TemporalLayersFactory* tl_factory;
+  TemporalLayersFactory* tl_factory;
 };
 
 // VP9 specific.
 struct VideoCodecVP9 {
   VideoCodecComplexity complexity;
   int resilience;
   unsigned char numberOfTemporalLayers;
   bool denoisingOn;
   bool frameDroppingOn;
   int keyFrameInterval;
@@ skipping 19 matching lines @@
   kVideoCodecVP8,
   kVideoCodecVP9,
   kVideoCodecH264,
   kVideoCodecI420,
   kVideoCodecRED,
   kVideoCodecULPFEC,
   kVideoCodecGeneric,
   kVideoCodecUnknown
 };
 
+// Translates from name of codec to codec type and vice versa.
+rtc::Optional<std::string> CodecTypeToPayloadName(VideoCodecType type);
+rtc::Optional<VideoCodecType> PayloadNameToCodecType(const std::string& name);
+
 union VideoCodecUnion {
   VideoCodecVP8 VP8;
   VideoCodecVP9 VP9;
   VideoCodecH264 H264;
 };
 
 // Simulcast is when the same stream is encoded multiple times with different
 // settings such as resolution.
 struct SimulcastStream {
   unsigned short width;
@@ skipping 56 matching lines @@
   VideoCodecH264* H264();
   const VideoCodecH264& H264() const;
 
   // This variable will be declared private and renamed to codec_specific_
   // once Chromium is not accessing it.
   // TODO(hta): Consider replacing the union with a pointer type.
   // This will allow removing the VideoCodec* types from this file.
   VideoCodecUnion codecSpecific;
 };
 
+class BitrateAllocation {
+ public:
+  static const size_t kMaxBitrateBps;
+  BitrateAllocation();
+
+  bool SetBitrate(size_t spatial_index,
+                  size_t temporal_index,
+                  uint32_t bitrate_bps);
+
+  uint32_t GetBitrate(size_t spatial_index, size_t temporal_index) const;
+
+  // Get the sum of all the temporal layer for a specific spatial layer.
+  uint32_t GetSpatialLayerSum(size_t spatial_index) const;
+
+  uint32_t get_sum_bps() const { return sum_; }  // Sum of all bitrates.
+  uint32_t get_sum_kbps() const { return (sum_ + 500) / 1000; }
+
+  inline bool operator==(const BitrateAllocation& other) const {
+    return memcmp(bitrates_, other.bitrates_, sizeof(bitrates_)) == 0;
+  }
+  inline bool operator!=(const BitrateAllocation& other) const {
+    return !(*this == other);
+  }
+
+ private:
+  uint32_t sum_;
+  uint32_t bitrates_[kMaxSpatialLayers][kMaxTemporalStreams];
+};
+
 // Bandwidth over-use detector options.  These are used to drive
 // experimentation with bandwidth estimation parameters.
 // See modules/remote_bitrate_estimator/overuse_detector.h
 struct OverUseDetectorOptions {
   OverUseDetectorOptions()
       : initial_slope(8.0 / 512.0),
         initial_offset(0),
         initial_e(),
         initial_process_noise(),
         initial_avg_noise(0.0),
@@ skipping 186 matching lines @@
 enum class RtcpMode { kOff, kCompound, kReducedSize };
 
 enum NetworkState {
   kNetworkUp,
   kNetworkDown,
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_COMMON_TYPES_H_