datachannel: Merge SendDataParams and DMT types with webrtc equivalent

cricket::SendDataParams is replaced by webrtc::SendDataParams.
cricket::DataMessageType is replaced by webrtc::DataMessageType.
The sid member from cricket::SendDataParams is now passed as an argument
to functions that used one when necessary.

Bug: webrtc:7484
Change-Id: Ia4a89c9651fb54ab9a084a6098d49130b6319e1b
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/217761
Commit-Queue: Florent Castelli <orphis@webrtc.org>
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#33966}
diff --git a/pc/data_channel_controller.cc b/pc/data_channel_controller.cc
index 7e6dc4b..d8e6b39 100644
--- a/pc/data_channel_controller.cc
+++ b/pc/data_channel_controller.cc
@@ -31,11 +31,12 @@
   return !sctp_data_channels_.empty();
 }
 
-bool DataChannelController::SendData(const cricket::SendDataParams& params,
+bool DataChannelController::SendData(int sid,
+                                     const SendDataParams& params,
                                      const rtc::CopyOnWriteBuffer& payload,
                                      cricket::SendDataResult* result) {
   if (data_channel_transport())
-    return DataChannelSendData(params, payload, result);
+    return DataChannelSendData(sid, params, payload, result);
   RTC_LOG(LS_ERROR) << "SendData called before transport is ready";
   return false;
 }
@@ -106,7 +107,7 @@
   RTC_DCHECK_RUN_ON(network_thread());
   cricket::ReceiveDataParams params;
   params.sid = channel_id;
-  params.type = ToCricketDataMessageType(type);
+  params.type = type;
   signaling_thread()->PostTask(
       ToQueuedTask([self = weak_factory_.GetWeakPtr(), params, buffer] {
         if (self) {
@@ -222,7 +223,7 @@
 bool DataChannelController::HandleOpenMessage_s(
     const cricket::ReceiveDataParams& params,
     const rtc::CopyOnWriteBuffer& buffer) {
-  if (params.type == cricket::DMT_CONTROL && IsOpenMessage(buffer)) {
+  if (params.type == DataMessageType::kControl && IsOpenMessage(buffer)) {
     // Received OPEN message; parse and signal that a new data channel should
     // be created.
     std::string label;
@@ -386,7 +387,8 @@
 }
 
 bool DataChannelController::DataChannelSendData(
-    const cricket::SendDataParams& params,
+    int sid,
+    const SendDataParams& params,
     const rtc::CopyOnWriteBuffer& payload,
     cricket::SendDataResult* result) {
   // TODO(bugs.webrtc.org/11547): Expect method to be called on the network
@@ -395,16 +397,9 @@
   RTC_DCHECK_RUN_ON(signaling_thread());
   RTC_DCHECK(data_channel_transport());
 
-  SendDataParams send_params;
-  send_params.type = ToWebrtcDataMessageType(params.type);
-  send_params.ordered = params.ordered;
-  send_params.max_rtx_count = params.max_rtx_count;
-  send_params.max_rtx_ms = params.max_rtx_ms;
-
   RTCError error = network_thread()->Invoke<RTCError>(
-      RTC_FROM_HERE, [this, params, send_params, payload] {
-        return data_channel_transport()->SendData(params.sid, send_params,
-                                                  payload);
+      RTC_FROM_HERE, [this, sid, params, payload] {
+        return data_channel_transport()->SendData(sid, params, payload);
       });
 
   if (error.ok()) {
diff --git a/pc/data_channel_controller.h b/pc/data_channel_controller.h
index 4c42b8a..05fcff0 100644
--- a/pc/data_channel_controller.h
+++ b/pc/data_channel_controller.h
@@ -53,7 +53,8 @@
 
   // Implements
   // SctpDataChannelProviderInterface.
-  bool SendData(const cricket::SendDataParams& params,
+  bool SendData(int sid,
+                const SendDataParams& params,
                 const rtc::CopyOnWriteBuffer& payload,
                 cricket::SendDataResult* result) override;
   bool ConnectDataChannel(SctpDataChannel* webrtc_data_channel) override;
@@ -131,7 +132,8 @@
       RTC_RUN_ON(signaling_thread());
 
   // Called from SendData when data_channel_transport() is true.
-  bool DataChannelSendData(const cricket::SendDataParams& params,
+  bool DataChannelSendData(int sid,
+                           const SendDataParams& params,
                            const rtc::CopyOnWriteBuffer& payload,
                            cricket::SendDataResult* result);
 
diff --git a/pc/data_channel_unittest.cc b/pc/data_channel_unittest.cc
index 2dc003f..98c44f2 100644
--- a/pc/data_channel_unittest.cc
+++ b/pc/data_channel_unittest.cc
@@ -286,8 +286,9 @@
 
   SetChannelReady();
   EXPECT_GE(webrtc_data_channel_->id(), 0);
-  EXPECT_EQ(cricket::DMT_CONTROL, provider_->last_send_data_params().type);
-  EXPECT_EQ(provider_->last_send_data_params().sid, webrtc_data_channel_->id());
+  EXPECT_EQ(webrtc::DataMessageType::kControl,
+            provider_->last_send_data_params().type);
+  EXPECT_EQ(provider_->last_sid(), webrtc_data_channel_->id());
 }
 
 TEST_F(SctpDataChannelTest, QueuedOpenMessageSent) {
@@ -295,8 +296,9 @@
   SetChannelReady();
   provider_->set_send_blocked(false);
 
-  EXPECT_EQ(cricket::DMT_CONTROL, provider_->last_send_data_params().type);
-  EXPECT_EQ(provider_->last_send_data_params().sid, webrtc_data_channel_->id());
+  EXPECT_EQ(webrtc::DataMessageType::kControl,
+            provider_->last_send_data_params().type);
+  EXPECT_EQ(provider_->last_sid(), webrtc_data_channel_->id());
 }
 
 // Tests that the DataChannel created after transport gets ready can enter OPEN
@@ -333,7 +335,7 @@
   // Emulates receiving an OPEN_ACK message.
   cricket::ReceiveDataParams params;
   params.sid = init.id;
-  params.type = cricket::DMT_CONTROL;
+  params.type = webrtc::DataMessageType::kControl;
   rtc::CopyOnWriteBuffer payload;
   webrtc::WriteDataChannelOpenAckMessage(&payload);
   dc->OnDataReceived(params, payload);
@@ -359,7 +361,7 @@
   // Emulates receiving a DATA message.
   cricket::ReceiveDataParams params;
   params.sid = init.id;
-  params.type = cricket::DMT_TEXT;
+  params.type = webrtc::DataMessageType::kText;
   webrtc::DataBuffer buffer("data");
   dc->OnDataReceived(params, buffer.data);
 
@@ -380,7 +382,8 @@
   provider_->set_send_blocked(false);
   EXPECT_EQ_WAIT(webrtc::DataChannelInterface::kOpen,
                  webrtc_data_channel_->state(), 1000);
-  EXPECT_EQ(cricket::DMT_CONTROL, provider_->last_send_data_params().type);
+  EXPECT_EQ(webrtc::DataMessageType::kControl,
+            provider_->last_send_data_params().type);
 }
 
 // Tests that close first makes sure all queued data gets sent.
@@ -401,7 +404,8 @@
   EXPECT_EQ_WAIT(webrtc::DataChannelInterface::kClosed,
                  webrtc_data_channel_->state(), 1000);
   EXPECT_TRUE(webrtc_data_channel_->error().ok());
-  EXPECT_EQ(cricket::DMT_TEXT, provider_->last_send_data_params().type);
+  EXPECT_EQ(webrtc::DataMessageType::kText,
+            provider_->last_send_data_params().type);
 }
 
 // Tests that messages are sent with the right id.
@@ -410,7 +414,7 @@
   SetChannelReady();
   webrtc::DataBuffer buffer("data");
   EXPECT_TRUE(webrtc_data_channel_->Send(buffer));
-  EXPECT_EQ(1, provider_->last_send_data_params().sid);
+  EXPECT_EQ(1, provider_->last_sid());
 }
 
 // Tests that the incoming messages with wrong ids are rejected.
@@ -457,7 +461,7 @@
                               rtc::Thread::Current(), rtc::Thread::Current());
 
   EXPECT_EQ_WAIT(webrtc::DataChannelInterface::kOpen, dc->state(), 1000);
-  EXPECT_EQ(0, provider_->last_send_data_params().sid);
+  EXPECT_EQ(0, provider_->last_sid());
 }
 
 // Tests that DataChannel::messages_received() and DataChannel::bytes_received()
@@ -522,8 +526,9 @@
 
   EXPECT_EQ_WAIT(webrtc::DataChannelInterface::kOpen, dc->state(), 1000);
 
-  EXPECT_EQ(config.id, provider_->last_send_data_params().sid);
-  EXPECT_EQ(cricket::DMT_CONTROL, provider_->last_send_data_params().type);
+  EXPECT_EQ(config.id, provider_->last_sid());
+  EXPECT_EQ(webrtc::DataMessageType::kControl,
+            provider_->last_send_data_params().type);
 }
 
 // Tests the OPEN_ACK role assigned by InternalDataChannelInit.
diff --git a/pc/sctp_data_channel.cc b/pc/sctp_data_channel.cc
index 2c90661..682d768 100644
--- a/pc/sctp_data_channel.cc
+++ b/pc/sctp_data_channel.cc
@@ -406,7 +406,7 @@
     return;
   }
 
-  if (params.type == cricket::DMT_CONTROL) {
+  if (params.type == DataMessageType::kControl) {
     if (handshake_state_ != kHandshakeWaitingForAck) {
       // Ignore it if we are not expecting an ACK message.
       RTC_LOG(LS_WARNING)
@@ -427,8 +427,8 @@
     return;
   }
 
-  RTC_DCHECK(params.type == cricket::DMT_BINARY ||
-             params.type == cricket::DMT_TEXT);
+  RTC_DCHECK(params.type == DataMessageType::kBinary ||
+             params.type == DataMessageType::kText);
 
   RTC_LOG(LS_VERBOSE) << "DataChannel received DATA message, sid = "
                       << params.sid;
@@ -439,7 +439,7 @@
     handshake_state_ = kHandshakeReady;
   }
 
-  bool binary = (params.type == cricket::DMT_BINARY);
+  bool binary = (params.type == webrtc::DataMessageType::kBinary);
   auto buffer = std::make_unique<DataBuffer>(payload, binary);
   if (state_ == kOpen && observer_) {
     ++messages_received_;
@@ -620,7 +620,7 @@
 bool SctpDataChannel::SendDataMessage(const DataBuffer& buffer,
                                       bool queue_if_blocked) {
   RTC_DCHECK_RUN_ON(signaling_thread_);
-  cricket::SendDataParams send_params;
+  SendDataParams send_params;
 
   send_params.ordered = config_.ordered;
   // Send as ordered if it is still going through OPEN/ACK signaling.
@@ -633,11 +633,12 @@
 
   send_params.max_rtx_count = config_.maxRetransmits;
   send_params.max_rtx_ms = config_.maxRetransmitTime;
-  send_params.sid = config_.id;
-  send_params.type = buffer.binary ? cricket::DMT_BINARY : cricket::DMT_TEXT;
+  send_params.type =
+      buffer.binary ? DataMessageType::kBinary : DataMessageType::kText;
 
   cricket::SendDataResult send_result = cricket::SDR_SUCCESS;
-  bool success = provider_->SendData(send_params, buffer.data, &send_result);
+  bool success =
+      provider_->SendData(config_.id, send_params, buffer.data, &send_result);
 
   if (success) {
     ++messages_sent_;
@@ -703,16 +704,16 @@
   bool is_open_message = handshake_state_ == kHandshakeShouldSendOpen;
   RTC_DCHECK(!is_open_message || !config_.negotiated);
 
-  cricket::SendDataParams send_params;
-  send_params.sid = config_.id;
+  SendDataParams send_params;
   // Send data as ordered before we receive any message from the remote peer to
   // make sure the remote peer will not receive any data before it receives the
   // OPEN message.
   send_params.ordered = config_.ordered || is_open_message;
-  send_params.type = cricket::DMT_CONTROL;
+  send_params.type = DataMessageType::kControl;
 
   cricket::SendDataResult send_result = cricket::SDR_SUCCESS;
-  bool retval = provider_->SendData(send_params, buffer, &send_result);
+  bool retval =
+      provider_->SendData(config_.id, send_params, buffer, &send_result);
   if (retval) {
     RTC_LOG(LS_VERBOSE) << "Sent CONTROL message on channel " << config_.id;
 
diff --git a/pc/sctp_data_channel.h b/pc/sctp_data_channel.h
index ddb8565..1d7a3c7 100644
--- a/pc/sctp_data_channel.h
+++ b/pc/sctp_data_channel.h
@@ -40,7 +40,8 @@
 class SctpDataChannelProviderInterface {
  public:
   // Sends the data to the transport.
-  virtual bool SendData(const cricket::SendDataParams& params,
+  virtual bool SendData(int sid,
+                        const SendDataParams& params,
                         const rtc::CopyOnWriteBuffer& payload,
                         cricket::SendDataResult* result) = 0;
   // Connects to the transport signals.
diff --git a/pc/sctp_data_channel_transport.cc b/pc/sctp_data_channel_transport.cc
index 786931c..bb81156 100644
--- a/pc/sctp_data_channel_transport.cc
+++ b/pc/sctp_data_channel_transport.cc
@@ -39,17 +39,8 @@
     int channel_id,
     const SendDataParams& params,
     const rtc::CopyOnWriteBuffer& buffer) {
-  // Map webrtc::SendDataParams to cricket::SendDataParams.
-  // TODO(mellem):  See about unifying these structs.
-  cricket::SendDataParams sd_params;
-  sd_params.sid = channel_id;
-  sd_params.type = ToCricketDataMessageType(params.type);
-  sd_params.ordered = params.ordered;
-  sd_params.max_rtx_count = params.max_rtx_count;
-  sd_params.max_rtx_ms = params.max_rtx_ms;
-
   cricket::SendDataResult result;
-  sctp_transport_->SendData(sd_params, buffer, &result);
+  sctp_transport_->SendData(channel_id, params, buffer, &result);
 
   // TODO(mellem):  See about changing the interfaces to not require mapping
   // SendDataResult to RTCError and back again.
@@ -94,8 +85,7 @@
     const cricket::ReceiveDataParams& params,
     const rtc::CopyOnWriteBuffer& buffer) {
   if (sink_) {
-    sink_->OnDataReceived(params.sid, ToWebrtcDataMessageType(params.type),
-                          buffer);
+    sink_->OnDataReceived(params.sid, params.type, buffer);
   }
 }
 
diff --git a/pc/sctp_transport_unittest.cc b/pc/sctp_transport_unittest.cc
index 8ab4482..b4618ed 100644
--- a/pc/sctp_transport_unittest.cc
+++ b/pc/sctp_transport_unittest.cc
@@ -38,7 +38,8 @@
   }
   bool OpenStream(int sid) override { return true; }
   bool ResetStream(int sid) override { return true; }
-  bool SendData(const cricket::SendDataParams& params,
+  bool SendData(int sid,
+                const SendDataParams& params,
                 const rtc::CopyOnWriteBuffer& payload,
                 cricket::SendDataResult* result = nullptr) override {
     return true;
diff --git a/pc/sctp_utils.cc b/pc/sctp_utils.cc
index 9d46cc4..f745840 100644
--- a/pc/sctp_utils.cc
+++ b/pc/sctp_utils.cc
@@ -230,33 +230,4 @@
   payload->SetData(&data, sizeof(data));
 }
 
-cricket::DataMessageType ToCricketDataMessageType(DataMessageType type) {
-  switch (type) {
-    case DataMessageType::kText:
-      return cricket::DMT_TEXT;
-    case DataMessageType::kBinary:
-      return cricket::DMT_BINARY;
-    case DataMessageType::kControl:
-      return cricket::DMT_CONTROL;
-    default:
-      return cricket::DMT_NONE;
-  }
-  return cricket::DMT_NONE;
-}
-
-DataMessageType ToWebrtcDataMessageType(cricket::DataMessageType type) {
-  switch (type) {
-    case cricket::DMT_TEXT:
-      return DataMessageType::kText;
-    case cricket::DMT_BINARY:
-      return DataMessageType::kBinary;
-    case cricket::DMT_CONTROL:
-      return DataMessageType::kControl;
-    case cricket::DMT_NONE:
-    default:
-      RTC_NOTREACHED();
-  }
-  return DataMessageType::kControl;
-}
-
 }  // namespace webrtc
diff --git a/pc/sctp_utils.h b/pc/sctp_utils.h
index 44225cf..da85445 100644
--- a/pc/sctp_utils.h
+++ b/pc/sctp_utils.h
@@ -40,10 +40,6 @@
 
 void WriteDataChannelOpenAckMessage(rtc::CopyOnWriteBuffer* payload);
 
-cricket::DataMessageType ToCricketDataMessageType(DataMessageType type);
-
-DataMessageType ToWebrtcDataMessageType(cricket::DataMessageType type);
-
 }  // namespace webrtc
 
 #endif  // PC_SCTP_UTILS_H_
diff --git a/pc/test/fake_data_channel_provider.h b/pc/test/fake_data_channel_provider.h
index 6a063f8..f9e9e91 100644
--- a/pc/test/fake_data_channel_provider.h
+++ b/pc/test/fake_data_channel_provider.h
@@ -26,7 +26,8 @@
         transport_error_(false) {}
   virtual ~FakeDataChannelProvider() {}
 
-  bool SendData(const cricket::SendDataParams& params,
+  bool SendData(int sid,
+                const webrtc::SendDataParams& params,
                 const rtc::CopyOnWriteBuffer& payload,
                 cricket::SendDataResult* result) override {
     RTC_CHECK(ready_to_send_);
@@ -41,6 +42,7 @@
       return false;
     }
 
+    last_sid_ = sid;
     last_send_data_params_ = params;
     return true;
   }
@@ -127,7 +129,8 @@
 
   void set_transport_error() { transport_error_ = true; }
 
-  cricket::SendDataParams last_send_data_params() const {
+  int last_sid() const { return last_sid_; }
+  const webrtc::SendDataParams& last_send_data_params() const {
     return last_send_data_params_;
   }
 
@@ -144,7 +147,8 @@
   }
 
  private:
-  cricket::SendDataParams last_send_data_params_;
+  int last_sid_;
+  webrtc::SendDataParams last_send_data_params_;
   bool send_blocked_;
   bool transport_available_;
   bool ready_to_send_;