Add setTimestamp() method on RTCEncodedVideoFrames behind flag

Video counterpart to crrev.com/c/4601477.

Bug: webrtc:14709
Change-Id: Ia9b61c893595249358383ead7d4c2971b52c03b3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4654707
Auto-Submit: Tony Herre <toprice@chromium.org>
Reviewed-by: Guido Urdaneta <guidou@chromium.org>
Reviewed-by: Palak Agarwal <agpalak@chromium.org>
Commit-Queue: Guido Urdaneta <guidou@chromium.org>
Commit-Queue: Tony Herre <toprice@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1164638}

diff --git a/third_party/blink/renderer/modules/peerconnection/rtc_encoded_video_frame.cc b/third_party/blink/renderer/modules/peerconnection/rtc_encoded_video_frame.cc
index aee347f..0b3f58b9 100644
--- a/third_party/blink/renderer/modules/peerconnection/rtc_encoded_video_frame.cc
+++ b/third_party/blink/renderer/modules/peerconnection/rtc_encoded_video_frame.cc

@@ -236,6 +236,11 @@
   return delegate_->Timestamp();
 }
 
+void RTCEncodedVideoFrame::setTimestamp(uint32_t timestamp,
+                                        ExceptionState& exception_state) {
+  delegate_->SetTimestamp(timestamp, exception_state);
+}
+
 DOMArrayBuffer* RTCEncodedVideoFrame::data() const {
   if (!frame_data_)
     frame_data_ = delegate_->CreateDataBuffer();

diff --git a/third_party/blink/renderer/modules/peerconnection/rtc_encoded_video_frame.h b/third_party/blink/renderer/modules/peerconnection/rtc_encoded_video_frame.h
index c6d7cbc8..4b49882 100644
--- a/third_party/blink/renderer/modules/peerconnection/rtc_encoded_video_frame.h
+++ b/third_party/blink/renderer/modules/peerconnection/rtc_encoded_video_frame.h

@@ -39,6 +39,7 @@
   String type() const;
   // Returns the RTP Packet Timestamp for this frame.
   uint32_t timestamp() const;
+  void setTimestamp(uint32_t timestamp, ExceptionState& exception_state);
   DOMArrayBuffer* data() const;
   RTCEncodedVideoFrameMetadata* getMetadata() const;
   void setMetadata(RTCEncodedVideoFrameMetadata* metadata,

diff --git a/third_party/blink/renderer/modules/peerconnection/rtc_encoded_video_frame.idl b/third_party/blink/renderer/modules/peerconnection/rtc_encoded_video_frame.idl
index a224e72..2d91436 100644
--- a/third_party/blink/renderer/modules/peerconnection/rtc_encoded_video_frame.idl
+++ b/third_party/blink/renderer/modules/peerconnection/rtc_encoded_video_frame.idl

@@ -20,6 +20,8 @@
     RTCEncodedVideoFrameMetadata getMetadata();
     [RuntimeEnabled=RTCEncodedVideoFrameAdditionalMetadata, RaisesException]
     void setMetadata(RTCEncodedVideoFrameMetadata metadata);
+    [RuntimeEnabled=RTCEncodedVideoFrameAdditionalMetadata, RaisesException] void
+    setTimestamp(unsigned long timestamp);
     [RuntimeEnabled=RTCEncodedVideoFrameClone, RaisesException] RTCEncodedVideoFrame clone();
     stringifier;
 };

diff --git a/third_party/blink/renderer/modules/peerconnection/rtc_encoded_video_frame_delegate.cc b/third_party/blink/renderer/modules/peerconnection/rtc_encoded_video_frame_delegate.cc
index 915560c5..8724cd1 100644
--- a/third_party/blink/renderer/modules/peerconnection/rtc_encoded_video_frame_delegate.cc
+++ b/third_party/blink/renderer/modules/peerconnection/rtc_encoded_video_frame_delegate.cc

@@ -7,6 +7,8 @@
 #include <utility>
 
 #include "third_party/blink/renderer/core/typed_arrays/dom_array_buffer.h"
+#include "third_party/blink/renderer/platform/bindings/exception_code.h"
+#include "third_party/blink/renderer/platform/bindings/exception_state.h"
 #include "third_party/webrtc/api/frame_transformer_factory.h"
 #include "third_party/webrtc/api/frame_transformer_interface.h"
 
@@ -31,6 +33,18 @@
   return webrtc_frame_ ? webrtc_frame_->GetTimestamp() : 0;
 }
 
+void RTCEncodedVideoFrameDelegate::SetTimestamp(
+    uint32_t timestamp,
+    ExceptionState& exception_state) {
+  base::AutoLock lock(lock_);
+  if (webrtc_frame_) {
+    webrtc_frame_->SetRTPTimestamp(timestamp);
+  } else {
+    exception_state.ThrowDOMException(DOMExceptionCode::kInvalidStateError,
+                                      "Video frame is empty.");
+  }
+}
+
 absl::optional<webrtc::Timestamp>
 RTCEncodedVideoFrameDelegate::CaptureTimeIdentifier() const {
   base::AutoLock lock(lock_);

diff --git a/third_party/blink/renderer/modules/peerconnection/rtc_encoded_video_frame_delegate.h b/third_party/blink/renderer/modules/peerconnection/rtc_encoded_video_frame_delegate.h
index 45f30db8..41f3406 100644
--- a/third_party/blink/renderer/modules/peerconnection/rtc_encoded_video_frame_delegate.h
+++ b/third_party/blink/renderer/modules/peerconnection/rtc_encoded_video_frame_delegate.h

@@ -20,6 +20,7 @@
 namespace blink {
 
 class DOMArrayBuffer;
+class ExceptionState;
 
 // This class wraps a WebRTC video frame and allows making shallow
 // copies. Its purpose is to support making RTCEncodedVideoFrames
@@ -32,6 +33,7 @@
 
   String Type() const;
   uint32_t Timestamp() const;
+  void SetTimestamp(uint32_t timestamp, ExceptionState& exception_state);
   absl::optional<webrtc::Timestamp> CaptureTimeIdentifier() const;
   DOMArrayBuffer* CreateDataBuffer() const;
   void SetData(const DOMArrayBuffer* data);

diff --git a/third_party/blink/web_tests/webexposed/global-interface-listing-dedicated-worker-expected.txt b/third_party/blink/web_tests/webexposed/global-interface-listing-dedicated-worker-expected.txt
index a623ebe..0a8e0dd 100644
--- a/third_party/blink/web_tests/webexposed/global-interface-listing-dedicated-worker-expected.txt
+++ b/third_party/blink/web_tests/webexposed/global-interface-listing-dedicated-worker-expected.txt

@@ -1661,6 +1661,7 @@
 [Worker]     method constructor
 [Worker]     method getMetadata
 [Worker]     method setMetadata
+[Worker]     method setTimestamp
 [Worker]     method toString
 [Worker]     setter data
 [Worker] interface ReadableByteStreamController

diff --git a/third_party/blink/web_tests/webexposed/global-interface-listing-expected.txt b/third_party/blink/web_tests/webexposed/global-interface-listing-expected.txt
index 83ffa2b..127aad8 100644
--- a/third_party/blink/web_tests/webexposed/global-interface-listing-expected.txt
+++ b/third_party/blink/web_tests/webexposed/global-interface-listing-expected.txt

@@ -7352,6 +7352,7 @@
     method constructor
     method getMetadata
     method setMetadata
+    method setTimestamp
     method toString
     setter data
 interface RTCError : DOMException