Add accessors to the types in the RTPVideoTypeHeader in RTPVideoHeader.

This CL is in preparation to change the RTPVideoTypeHeader into an absl::variant.

Bug: none
Change-Id: I1672d866df0395f3417d8e278cc67f017ab0ff98
Reviewed-on: https://webrtc-review.googlesource.com/87261
Reviewed-by: Danil Chapovalov <danilchap@webrtc.org>
Reviewed-by: Stefan Holmer <stefan@webrtc.org>
Commit-Queue: Philip Eliasson <philipel@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#23856}
diff --git a/modules/video_coding/decoding_state_unittest.cc b/modules/video_coding/decoding_state_unittest.cc
index 3ed2e89..740c384 100644
--- a/modules/video_coding/decoding_state_unittest.cc
+++ b/modules/video_coding/decoding_state_unittest.cc
@@ -37,7 +37,7 @@
   packet.seqNum = 0xffff;
   packet.frameType = kVideoFrameDelta;
   packet.video_header.codec = kVideoCodecVP8;
-  packet.video_header.codecHeader.VP8.pictureId = 0x007F;
+  packet.video_header.vp8().pictureId = 0x007F;
   FrameData frame_data;
   frame_data.rtt_ms = 0;
   frame_data.rolling_average_packets_per_frame = -1;
@@ -53,17 +53,17 @@
   packet.frameType = kVideoFrameDelta;
   // Use pictureId
   packet.is_first_packet_in_frame = false;
-  packet.video_header.codecHeader.VP8.pictureId = 0x0002;
+  packet.video_header.vp8().pictureId = 0x0002;
   EXPECT_LE(0, frame.InsertPacket(packet, 0, kNoErrors, frame_data));
   EXPECT_FALSE(dec_state.ContinuousFrame(&frame));
   frame.Reset();
-  packet.video_header.codecHeader.VP8.pictureId = 0;
+  packet.video_header.vp8().pictureId = 0;
   packet.seqNum = 10;
   EXPECT_LE(0, frame.InsertPacket(packet, 0, kNoErrors, frame_data));
   EXPECT_TRUE(dec_state.ContinuousFrame(&frame));
 
   // Use sequence numbers.
-  packet.video_header.codecHeader.VP8.pictureId = kNoPictureId;
+  packet.video_header.vp8().pictureId = kNoPictureId;
   frame.Reset();
   packet.seqNum = dec_state.sequence_num() - 1u;
   EXPECT_LE(0, frame.InsertPacket(packet, 0, kNoErrors, frame_data));
@@ -82,9 +82,9 @@
   // Insert packet with temporal info.
   dec_state.Reset();
   frame.Reset();
-  packet.video_header.codecHeader.VP8.tl0PicIdx = 0;
-  packet.video_header.codecHeader.VP8.temporalIdx = 0;
-  packet.video_header.codecHeader.VP8.pictureId = 0;
+  packet.video_header.vp8().tl0PicIdx = 0;
+  packet.video_header.vp8().temporalIdx = 0;
+  packet.video_header.vp8().pictureId = 0;
   packet.seqNum = 1;
   packet.timestamp = 1;
   EXPECT_TRUE(dec_state.full_sync());
@@ -93,9 +93,9 @@
   EXPECT_TRUE(dec_state.full_sync());
   frame.Reset();
   // 1 layer up - still good.
-  packet.video_header.codecHeader.VP8.tl0PicIdx = 0;
-  packet.video_header.codecHeader.VP8.temporalIdx = 1;
-  packet.video_header.codecHeader.VP8.pictureId = 1;
+  packet.video_header.vp8().tl0PicIdx = 0;
+  packet.video_header.vp8().temporalIdx = 1;
+  packet.video_header.vp8().pictureId = 1;
   packet.seqNum = 2;
   packet.timestamp = 2;
   EXPECT_LE(0, frame.InsertPacket(packet, 0, kNoErrors, frame_data));
@@ -104,18 +104,18 @@
   EXPECT_TRUE(dec_state.full_sync());
   frame.Reset();
   // Lost non-base layer packet => should update sync parameter.
-  packet.video_header.codecHeader.VP8.tl0PicIdx = 0;
-  packet.video_header.codecHeader.VP8.temporalIdx = 3;
-  packet.video_header.codecHeader.VP8.pictureId = 3;
+  packet.video_header.vp8().tl0PicIdx = 0;
+  packet.video_header.vp8().temporalIdx = 3;
+  packet.video_header.vp8().pictureId = 3;
   packet.seqNum = 4;
   packet.timestamp = 4;
   EXPECT_LE(0, frame.InsertPacket(packet, 0, kNoErrors, frame_data));
   EXPECT_FALSE(dec_state.ContinuousFrame(&frame));
   // Now insert the next non-base layer (belonging to a next tl0PicId).
   frame.Reset();
-  packet.video_header.codecHeader.VP8.tl0PicIdx = 1;
-  packet.video_header.codecHeader.VP8.temporalIdx = 2;
-  packet.video_header.codecHeader.VP8.pictureId = 4;
+  packet.video_header.vp8().tl0PicIdx = 1;
+  packet.video_header.vp8().temporalIdx = 2;
+  packet.video_header.vp8().pictureId = 4;
   packet.seqNum = 5;
   packet.timestamp = 5;
   EXPECT_LE(0, frame.InsertPacket(packet, 0, kNoErrors, frame_data));
@@ -125,9 +125,9 @@
   EXPECT_TRUE(dec_state.full_sync());
   // Next base layer (dropped interim non-base layers) - should update sync.
   frame.Reset();
-  packet.video_header.codecHeader.VP8.tl0PicIdx = 1;
-  packet.video_header.codecHeader.VP8.temporalIdx = 0;
-  packet.video_header.codecHeader.VP8.pictureId = 5;
+  packet.video_header.vp8().tl0PicIdx = 1;
+  packet.video_header.vp8().temporalIdx = 0;
+  packet.video_header.vp8().pictureId = 5;
   packet.seqNum = 6;
   packet.timestamp = 6;
   EXPECT_LE(0, frame.InsertPacket(packet, 0, kNoErrors, frame_data));
@@ -137,18 +137,18 @@
 
   // Check wrap for temporal layers.
   frame.Reset();
-  packet.video_header.codecHeader.VP8.tl0PicIdx = 0x00FF;
-  packet.video_header.codecHeader.VP8.temporalIdx = 0;
-  packet.video_header.codecHeader.VP8.pictureId = 6;
+  packet.video_header.vp8().tl0PicIdx = 0x00FF;
+  packet.video_header.vp8().temporalIdx = 0;
+  packet.video_header.vp8().pictureId = 6;
   packet.seqNum = 7;
   packet.timestamp = 7;
   EXPECT_LE(0, frame.InsertPacket(packet, 0, kNoErrors, frame_data));
   dec_state.SetState(&frame);
   EXPECT_FALSE(dec_state.full_sync());
   frame.Reset();
-  packet.video_header.codecHeader.VP8.tl0PicIdx = 0x0000;
-  packet.video_header.codecHeader.VP8.temporalIdx = 0;
-  packet.video_header.codecHeader.VP8.pictureId = 7;
+  packet.video_header.vp8().tl0PicIdx = 0x0000;
+  packet.video_header.vp8().temporalIdx = 0;
+  packet.video_header.vp8().pictureId = 7;
   packet.seqNum = 8;
   packet.timestamp = 8;
   EXPECT_LE(0, frame.InsertPacket(packet, 0, kNoErrors, frame_data));
@@ -214,9 +214,9 @@
   packet.video_header.codec = kVideoCodecVP8;
   packet.timestamp = 0;
   packet.seqNum = 0;
-  packet.video_header.codecHeader.VP8.tl0PicIdx = 0;
-  packet.video_header.codecHeader.VP8.temporalIdx = 0;
-  packet.video_header.codecHeader.VP8.pictureId = 0;
+  packet.video_header.vp8().tl0PicIdx = 0;
+  packet.video_header.vp8().temporalIdx = 0;
+  packet.video_header.vp8().pictureId = 0;
   FrameData frame_data;
   frame_data.rtt_ms = 0;
   frame_data.rolling_average_packets_per_frame = -1;
@@ -226,9 +226,9 @@
   frame.Reset();
   packet.timestamp = 1;
   packet.seqNum = 1;
-  packet.video_header.codecHeader.VP8.tl0PicIdx = 0;
-  packet.video_header.codecHeader.VP8.temporalIdx = 1;
-  packet.video_header.codecHeader.VP8.pictureId = 1;
+  packet.video_header.vp8().tl0PicIdx = 0;
+  packet.video_header.vp8().temporalIdx = 1;
+  packet.video_header.vp8().pictureId = 1;
   EXPECT_LE(0, frame.InsertPacket(packet, 0, kNoErrors, frame_data));
   EXPECT_TRUE(dec_state.ContinuousFrame(&frame));
   dec_state.SetState(&frame);
@@ -238,9 +238,9 @@
   frame.Reset();
   packet.timestamp = 3;
   packet.seqNum = 3;
-  packet.video_header.codecHeader.VP8.tl0PicIdx = 0;
-  packet.video_header.codecHeader.VP8.temporalIdx = 3;
-  packet.video_header.codecHeader.VP8.pictureId = 3;
+  packet.video_header.vp8().tl0PicIdx = 0;
+  packet.video_header.vp8().temporalIdx = 3;
+  packet.video_header.vp8().pictureId = 3;
   EXPECT_LE(0, frame.InsertPacket(packet, 0, kNoErrors, frame_data));
   EXPECT_FALSE(dec_state.ContinuousFrame(&frame));
   dec_state.SetState(&frame);
@@ -249,9 +249,9 @@
   frame.Reset();
   packet.timestamp = 4;
   packet.seqNum = 4;
-  packet.video_header.codecHeader.VP8.tl0PicIdx = 1;
-  packet.video_header.codecHeader.VP8.temporalIdx = 0;
-  packet.video_header.codecHeader.VP8.pictureId = 4;
+  packet.video_header.vp8().tl0PicIdx = 1;
+  packet.video_header.vp8().temporalIdx = 0;
+  packet.video_header.vp8().pictureId = 4;
   EXPECT_LE(0, frame.InsertPacket(packet, 0, kNoErrors, frame_data));
   EXPECT_TRUE(dec_state.ContinuousFrame(&frame));
   dec_state.SetState(&frame);
@@ -263,9 +263,9 @@
   packet.is_first_packet_in_frame = 1;
   packet.timestamp = 5;
   packet.seqNum = 5;
-  packet.video_header.codecHeader.VP8.tl0PicIdx = 2;
-  packet.video_header.codecHeader.VP8.temporalIdx = 0;
-  packet.video_header.codecHeader.VP8.pictureId = 5;
+  packet.video_header.vp8().tl0PicIdx = 2;
+  packet.video_header.vp8().temporalIdx = 0;
+  packet.video_header.vp8().pictureId = 5;
   EXPECT_LE(0, frame.InsertPacket(packet, 0, kNoErrors, frame_data));
   EXPECT_TRUE(dec_state.ContinuousFrame(&frame));
   dec_state.SetState(&frame);
@@ -276,9 +276,9 @@
   packet.frameType = kVideoFrameDelta;
   packet.timestamp = 6;
   packet.seqNum = 6;
-  packet.video_header.codecHeader.VP8.tl0PicIdx = 3;
-  packet.video_header.codecHeader.VP8.temporalIdx = 0;
-  packet.video_header.codecHeader.VP8.pictureId = 6;
+  packet.video_header.vp8().tl0PicIdx = 3;
+  packet.video_header.vp8().temporalIdx = 0;
+  packet.video_header.vp8().pictureId = 6;
   EXPECT_LE(0, frame.InsertPacket(packet, 0, kNoErrors, frame_data));
   EXPECT_TRUE(dec_state.ContinuousFrame(&frame));
   EXPECT_TRUE(dec_state.full_sync());
@@ -287,9 +287,9 @@
   packet.is_first_packet_in_frame = 1;
   packet.timestamp = 8;
   packet.seqNum = 8;
-  packet.video_header.codecHeader.VP8.tl0PicIdx = 4;
-  packet.video_header.codecHeader.VP8.temporalIdx = 0;
-  packet.video_header.codecHeader.VP8.pictureId = 8;
+  packet.video_header.vp8().tl0PicIdx = 4;
+  packet.video_header.vp8().temporalIdx = 0;
+  packet.video_header.vp8().pictureId = 8;
   EXPECT_LE(0, frame.InsertPacket(packet, 0, kNoErrors, frame_data));
   EXPECT_FALSE(dec_state.ContinuousFrame(&frame));
   EXPECT_TRUE(dec_state.full_sync());
@@ -302,10 +302,10 @@
   packet.is_first_packet_in_frame = 1;
   packet.timestamp = 9;
   packet.seqNum = 9;
-  packet.video_header.codecHeader.VP8.tl0PicIdx = 4;
-  packet.video_header.codecHeader.VP8.temporalIdx = 2;
-  packet.video_header.codecHeader.VP8.pictureId = 9;
-  packet.video_header.codecHeader.VP8.layerSync = true;
+  packet.video_header.vp8().tl0PicIdx = 4;
+  packet.video_header.vp8().temporalIdx = 2;
+  packet.video_header.vp8().pictureId = 9;
+  packet.video_header.vp8().layerSync = true;
   EXPECT_LE(0, frame.InsertPacket(packet, 0, kNoErrors, frame_data));
   dec_state.SetState(&frame);
   EXPECT_TRUE(dec_state.full_sync());
@@ -323,10 +323,10 @@
   packet.markerBit = 1;
   packet.timestamp = 0;
   packet.seqNum = 0;
-  packet.video_header.codecHeader.VP8.tl0PicIdx = 0;
-  packet.video_header.codecHeader.VP8.temporalIdx = 0;
-  packet.video_header.codecHeader.VP8.pictureId = 0;
-  packet.video_header.codecHeader.VP8.layerSync = false;
+  packet.video_header.vp8().tl0PicIdx = 0;
+  packet.video_header.vp8().temporalIdx = 0;
+  packet.video_header.vp8().pictureId = 0;
+  packet.video_header.vp8().layerSync = false;
   EXPECT_LE(0, frame.InsertPacket(packet, 0, kNoErrors, frame_data));
   dec_state.SetState(&frame);
   EXPECT_TRUE(dec_state.full_sync());
@@ -337,10 +337,10 @@
   packet.markerBit = 0;
   packet.timestamp = 1;
   packet.seqNum = 1;
-  packet.video_header.codecHeader.VP8.tl0PicIdx = 0;
-  packet.video_header.codecHeader.VP8.temporalIdx = 2;
-  packet.video_header.codecHeader.VP8.pictureId = 1;
-  packet.video_header.codecHeader.VP8.layerSync = true;
+  packet.video_header.vp8().tl0PicIdx = 0;
+  packet.video_header.vp8().temporalIdx = 2;
+  packet.video_header.vp8().pictureId = 1;
+  packet.video_header.vp8().layerSync = true;
   EXPECT_LE(0, frame.InsertPacket(packet, 0, kNoErrors, frame_data));
   EXPECT_TRUE(dec_state.ContinuousFrame(&frame));
   // Layer 1
@@ -350,10 +350,10 @@
   packet.markerBit = 1;
   packet.timestamp = 2;
   packet.seqNum = 3;
-  packet.video_header.codecHeader.VP8.tl0PicIdx = 0;
-  packet.video_header.codecHeader.VP8.temporalIdx = 1;
-  packet.video_header.codecHeader.VP8.pictureId = 2;
-  packet.video_header.codecHeader.VP8.layerSync = true;
+  packet.video_header.vp8().tl0PicIdx = 0;
+  packet.video_header.vp8().temporalIdx = 1;
+  packet.video_header.vp8().pictureId = 2;
+  packet.video_header.vp8().layerSync = true;
   EXPECT_LE(0, frame.InsertPacket(packet, 0, kNoErrors, frame_data));
   EXPECT_FALSE(dec_state.ContinuousFrame(&frame));
   EXPECT_TRUE(dec_state.full_sync());
@@ -368,9 +368,9 @@
   packet.video_header.codec = kVideoCodecVP8;
   packet.timestamp = 0;
   packet.seqNum = 0;
-  packet.video_header.codecHeader.VP8.tl0PicIdx = 0;
-  packet.video_header.codecHeader.VP8.temporalIdx = 0;
-  packet.video_header.codecHeader.VP8.pictureId = 0;
+  packet.video_header.vp8().tl0PicIdx = 0;
+  packet.video_header.vp8().temporalIdx = 0;
+  packet.video_header.vp8().pictureId = 0;
   FrameData frame_data;
   frame_data.rtt_ms = 0;
   frame_data.rolling_average_packets_per_frame = -1;
@@ -384,8 +384,8 @@
   packet.frameType = kVideoFrameDelta;
   packet.timestamp += 3000;
   ++packet.seqNum;
-  packet.video_header.codecHeader.VP8.temporalIdx = 1;
-  packet.video_header.codecHeader.VP8.pictureId = 2;
+  packet.video_header.vp8().temporalIdx = 1;
+  packet.video_header.vp8().pictureId = 2;
   EXPECT_LE(0, frame.InsertPacket(packet, 0, kNoErrors, frame_data));
   EXPECT_FALSE(dec_state.ContinuousFrame(&frame));
   dec_state.SetState(&frame);
@@ -421,9 +421,9 @@
   packet.video_header.codec = kVideoCodecVP8;
   packet.timestamp = 0;
   packet.seqNum = 0;
-  packet.video_header.codecHeader.VP8.tl0PicIdx = 0;
-  packet.video_header.codecHeader.VP8.temporalIdx = 0;
-  packet.video_header.codecHeader.VP8.pictureId = 0;
+  packet.video_header.vp8().tl0PicIdx = 0;
+  packet.video_header.vp8().temporalIdx = 0;
+  packet.video_header.vp8().pictureId = 0;
   FrameData frame_data;
   frame_data.rtt_ms = 0;
   frame_data.rolling_average_packets_per_frame = -1;
@@ -433,15 +433,15 @@
   frame.Reset();
   ++packet.timestamp;
   ++packet.seqNum;
-  packet.video_header.codecHeader.VP8.temporalIdx++;
-  packet.video_header.codecHeader.VP8.pictureId++;
+  packet.video_header.vp8().temporalIdx++;
+  packet.video_header.vp8().pictureId++;
   EXPECT_LE(0, frame.InsertPacket(packet, 0, kNoErrors, frame_data));
   EXPECT_TRUE(dec_state.ContinuousFrame(&frame));
   frame.Reset();
   // Testing only gap in tl0PicIdx when tl0PicIdx in continuous.
-  packet.video_header.codecHeader.VP8.tl0PicIdx += 3;
-  packet.video_header.codecHeader.VP8.temporalIdx++;
-  packet.video_header.codecHeader.VP8.tl0PicIdx = 1;
+  packet.video_header.vp8().tl0PicIdx += 3;
+  packet.video_header.vp8().temporalIdx++;
+  packet.video_header.vp8().tl0PicIdx = 1;
   EXPECT_LE(0, frame.InsertPacket(packet, 0, kNoErrors, frame_data));
   EXPECT_FALSE(dec_state.ContinuousFrame(&frame));
 }
@@ -458,7 +458,7 @@
   packet.dataPtr = data;
   packet.video_header.codec = kVideoCodecVP9;
 
-  RTPVideoHeaderVP9& vp9_hdr = packet.video_header.codecHeader.VP9;
+  RTPVideoHeaderVP9& vp9_hdr = packet.video_header.vp9();
   vp9_hdr.picture_id = 10;
   vp9_hdr.flexible_mode = true;
 
@@ -501,7 +501,7 @@
   packet.dataPtr = data;
   packet.video_header.codec = kVideoCodecVP9;
 
-  RTPVideoHeaderVP9& vp9_hdr = packet.video_header.codecHeader.VP9;
+  RTPVideoHeaderVP9& vp9_hdr = packet.video_header.vp9();
   vp9_hdr.picture_id = 10;
   vp9_hdr.flexible_mode = true;
 
@@ -556,7 +556,7 @@
   packet.dataPtr = data;
   packet.video_header.codec = kVideoCodecVP9;
 
-  RTPVideoHeaderVP9& vp9_hdr = packet.video_header.codecHeader.VP9;
+  RTPVideoHeaderVP9& vp9_hdr = packet.video_header.vp9();
   vp9_hdr.picture_id = 10;
   vp9_hdr.flexible_mode = true;