1 files changed, 8 insertions, 2 deletions
diff --git a/third_party/libwebrtc/audio/channel_send_frame_transformer_delegate.h b/third_party/libwebrtc/audio/channel_send_frame_transformer_delegate.h
index eb0027e4c8..97fc14f737 100644
--- a/third_party/libwebrtc/audio/channel_send_frame_transformer_delegate.h
+++ b/third_party/libwebrtc/audio/channel_send_frame_transformer_delegate.h
@@ -12,6 +12,7 @@
 #define AUDIO_CHANNEL_SEND_FRAME_TRANSFORMER_DELEGATE_H_
 
 #include <memory>
+#include <string>
 
 #include "api/frame_transformer_interface.h"
 #include "api/sequence_checker.h"
@@ -34,7 +35,8 @@ class ChannelSendFrameTransformerDelegate : public TransformedFrameCallback {
                             uint8_t payloadType,
                             uint32_t rtp_timestamp_with_offset,
                             rtc::ArrayView<const uint8_t> payload,
-                            int64_t absolute_capture_timestamp_ms)>;
+                            int64_t absolute_capture_timestamp_ms,
+                            rtc::ArrayView<const uint32_t> csrcs)>;
   ChannelSendFrameTransformerDelegate(
       SendFrameCallback send_frame_callback,
       rtc::scoped_refptr<FrameTransformerInterface> frame_transformer,
@@ -57,12 +59,15 @@ class ChannelSendFrameTransformerDelegate : public TransformedFrameCallback {
                  const uint8_t* payload_data,
                  size_t payload_size,
                  int64_t absolute_capture_timestamp_ms,
-                 uint32_t ssrc);
+                 uint32_t ssrc,
+                 const std::string& codec_mime_type);
 
   // Implements TransformedFrameCallback. Can be called on any thread.
   void OnTransformedFrame(
       std::unique_ptr<TransformableFrameInterface> frame) override;
 
+  void StartShortCircuiting() override;
+
   // Delegates the call to ChannelSend::SendRtpAudio on the `encoder_queue_`,
   // by calling `send_audio_callback_`.
   void SendFrame(std::unique_ptr<TransformableFrameInterface> frame) const;
@@ -75,6 +80,7 @@ class ChannelSendFrameTransformerDelegate : public TransformedFrameCallback {
   SendFrameCallback send_frame_callback_ RTC_GUARDED_BY(send_lock_);
   rtc::scoped_refptr<FrameTransformerInterface> frame_transformer_;
   rtc::TaskQueue* encoder_queue_ RTC_GUARDED_BY(send_lock_);
+  bool short_circuit_ RTC_GUARDED_BY(send_lock_) = false;
 };
 
 std::unique_ptr<TransformableAudioFrameInterface> CloneSenderAudioFrame(