[repos] lgprotocol: import shared protocol definitions

Add LGProtocol as a pinned submodule and consume its KVMFR protocol
definitions throughout the client, host, IDD, OBS, and profiler.

Keep Looking Glass framebuffer helpers local while removing duplicated
protocol headers and migrating users to KVMFR-scoped types.

obs/CMakeLists.txt

@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.10)
-project(looking-glass-obs C)
+project(looking-glass-obs C CXX)
 
 get_filename_component(PROJECT_TOP "${PROJECT_SOURCE_DIR}/.." ABSOLUTE)
 list(APPEND CMAKE_MODULE_PATH "${PROJECT_TOP}/cmake/" "${PROJECT_SOURCE_DIR}/cmake/")

obs/frame_scheduler.c

@@ -20,7 +20,7 @@
 
 #include "frame_scheduler.h"
 
-#include <common/KVMFR.h>
+#include <LGProtocol/KVMFR.h>
 
 #include <string.h>
 

obs/lg.c

@@ -29,8 +29,8 @@
 
 #include <common/array.h>
 #include <common/ivshmem.h>
-#include <common/KVMFR.h>
-#include <common/LGMPConfig.h>
+#include <LGProtocol/KVMFR.h>
+#include <LGProtocol/LGMPConfig.h>
 #include <common/framebuffer.h>
 #include <lgmp/client.h>
 
@@ -97,7 +97,7 @@ typedef struct
   bool                 unpack;
   uint32_t             drmFormat;
   struct vec2          screenScale;
-  FrameType            type;
+  KVMFRFrameType       type;
   int                  bpp;
   struct IVSHMEM       shmDev;
   PLGMPClient          lgmp;
@@ -709,8 +709,8 @@ static void * frameThread(void * data)
         (const KVMFRFrame *)frameMessage.msg.mem;
       if (frameMessage.owner)
       {
-        const FrameBuffer * fb =
-          (const FrameBuffer *)((const uint8_t *)frame + frame->offset);
+        const KVMFRFrameBuffer * fb =
+          (const KVMFRFrameBuffer *)((const uint8_t *)frame + frame->offset);
         if (framebuffer_wait(
               fb, (size_t)frame->dataHeight * frame->pitch))
         {
@@ -1024,7 +1024,8 @@ static DMAFrameInfo * dmabufOpenDMAFrameInfo(LGPlugin * this, LGMPMessage * msg,
   if (fi->fd == -1)
   {
     const uintptr_t pos    = (uintptr_t) msg->mem - (uintptr_t) this->shmDev.mem;
-    const uintptr_t offset = (uintptr_t) frame->offset + sizeof(FrameBuffer);
+    const uintptr_t offset =
+      (uintptr_t)frame->offset + sizeof(KVMFRFrameBuffer);
 
     fi->dataSize = dataSize;
     fi->fd       = ivshmemGetDMABuf(&this->shmDev, pos + offset, dataSize);
@@ -1599,8 +1600,8 @@ static void lgVideoTick(void * data, float seconds)
     return;
   }
 
-  const FrameBuffer * fb =
-    (const FrameBuffer *)((const uint8_t *)frame + frame->offset);
+  const KVMFRFrameBuffer * fb =
+    (const KVMFRFrameBuffer *)((const uint8_t *)frame + frame->offset);
   bool frameComplete = false;
   if (frameMessage.owner)
   {