Update Linux media handling (#1146)

* Enable CEF browser for Linux

* Disable the update for Linux, we don't have that one right now

* Update build_linux.yaml

We need  libpulse-dev for volume_catcher Linux

* Add linux_volum_catcher* files

* Enable OpenAL for Linux-ReleaseOS

* Linux: Update OpenAL

* Update SDL2

* Add libsndio-dev to the dependencies.

* Update CEF to an official LL version

* Remove dupe of emoji_shortcodes

* Reording autobuild does because it can and wants to

* Linux: Disable NDOF for the time being. After updating the ndof 3P needs to be rebuilt and we do not have a fresh one from LL yet.
Forcefully undefine LIB_NDOF, it gets defined in the build variables no matter if it is safe to define.

* Remove wrestling with mutliarch and LIBGL_DRIVERS_PATH

* Remove tcmalloc snippet, tcmalloc is a very faint bad dream of the past

* Putting out a warning this viewer ran on a x64 arch and then suggesting to install 32 bit compat packages makes no sense at all

* CEF resources need to be in lib

* It;'s okay to warn about missing plugins

* Linux: CEF keyboard handling

* Remove old gstreamer 0.10 implementation

* Linux DSO loading always had been very peculiar due to macro magic.
At least now it is peculiar shared magic with only one implementation.

* Remove -fPIC. We get that one from LL_BUILD

* /proc/cpuinfo is not reliable to detrmine the max CPU clock. Try to determine this by reading "/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq".

Only if this fails go back to /proc/cpuinfo

* Cleanup

* Cleanup common linker and compiler flags, make it more obvious which flags are for which OS/compiler

* Switch to correct plugin file

* Install libpulse-dev for volume catcher.

* And the runner needs libsndio-dev as well.

* check for runner.os=='linux'. matrix.os is the full name of the image (limux-large).

3 files changed, 78 insertions, 8 deletions

diff --git a/indra/media_plugins/base/CMakeLists.txt b/indra/media_plugins/base/CMakeLists.txt
index 64b6a4228d..5e635c6ca3 100644
--- a/indra/media_plugins/base/CMakeLists.txt
+++ b/indra/media_plugins/base/CMakeLists.txt
@@ -12,13 +12,6 @@ include(PluginAPI)
 
 ### media_plugin_base
 
-if(NOT ADDRESS_SIZE EQUAL 32)
-  if(WINDOWS)
-    ##add_definitions(/FIXED:NO)
-  else(WINDOWS) # not windows therefore gcc LINUX and DARWIN
-    add_definitions(-fPIC)
-  endif(WINDOWS)
-endif(NOT ADDRESS_SIZE EQUAL 32)
 
 set(media_plugin_base_SOURCE_FILES
     media_plugin_base.cpp
diff --git a/indra/media_plugins/base/media_plugin_base.cpp b/indra/media_plugins/base/media_plugin_base.cpp
index 37c498664a..dbbc973f00 100644
--- a/indra/media_plugins/base/media_plugin_base.cpp
+++ b/indra/media_plugins/base/media_plugin_base.cpp
@@ -167,6 +167,56 @@ void MediaPluginBase::sendStatus()
 	sendMessage(message);
 }
 
+#if LL_LINUX
+
+size_t SymbolGrabber::registerSymbol( SymbolToGrab aSymbol )
+{
+    gSymbolsToGrab.emplace_back(aSymbol);
+    return gSymbolsToGrab.size();
+}
+
+bool SymbolGrabber::grabSymbols(std::vector< std::string > const &aDSONames)
+{
+    std::cerr << "SYMBOLS: " << gSymbolsToGrab.size() << std::endl;
+
+    if (sSymsGrabbed)
+        return true;
+
+    //attempt to load the shared libraries
+    apr_pool_create(&sSymPADSOMemoryPool, nullptr);
+
+    for( std::vector< std::string >::const_iterator itr = aDSONames.begin(); itr != aDSONames.end(); ++itr )
+    {
+        apr_dso_handle_t *pDSO(NULL);
+        std::string strDSO{ *itr };
+        if( APR_SUCCESS == apr_dso_load( &pDSO, strDSO.c_str(), sSymPADSOMemoryPool ))
+            sLoadedLibraries.push_back( pDSO );
+
+        for( auto i = 0; i < gSymbolsToGrab.size(); ++i )
+        {
+            if( !*gSymbolsToGrab[i].mPPFunc )
+                apr_dso_sym( gSymbolsToGrab[i].mPPFunc, pDSO, gSymbolsToGrab[i].mName );
+        }
+    }
+
+    bool sym_error = false;
+
+    for( auto i = 0; i < gSymbolsToGrab.size(); ++i )
+    {
+        if( gSymbolsToGrab[ i ].mRequired && ! *gSymbolsToGrab[ i ].mPPFunc )
+            sym_error = true;
+    }
+
+    sSymsGrabbed = !sym_error;
+    return sSymsGrabbed;
+}
+
+void SymbolGrabber::ungrabSymbols()
+{
+
+}
+#endif
+
 
 #if LL_WINDOWS
 # define LLSYMEXPORT __declspec(dllexport)
diff --git a/indra/media_plugins/base/media_plugin_base.h b/indra/media_plugins/base/media_plugin_base.h
index 38b8226bb3..2e975a5bf2 100644
--- a/indra/media_plugins/base/media_plugin_base.h
+++ b/indra/media_plugins/base/media_plugin_base.h
@@ -32,6 +32,34 @@
 #include "llpluginmessage.h"
 #include "llpluginmessageclasses.h"
 
+#if LL_LINUX
+
+struct SymbolToGrab
+{
+    bool mRequired;
+    char const *mName;
+    apr_dso_handle_sym_t *mPPFunc;
+};
+
+class SymbolGrabber
+{
+public:
+    size_t registerSymbol( SymbolToGrab aSymbol );
+    bool grabSymbols(std::vector< std::string > const &aDSONames);
+    void ungrabSymbols();
+
+private:
+    std::vector< SymbolToGrab > gSymbolsToGrab;
+
+    bool sSymsGrabbed = false;
+    apr_pool_t *sSymPADSOMemoryPool = nullptr;
+    std::vector<apr_dso_handle_t *> sLoadedLibraries;
+};
+
+extern SymbolGrabber gSymbolGrabber;
+#define LL_GRAB_SYM(REQUIRED, SYMBOL_NAME, RETURN, ...) RETURN (*ll##SYMBOL_NAME)(__VA_ARGS__) = nullptr; size_t gRegistered##SYMBOL_NAME = gSymbolGrabber.registerSymbol( { REQUIRED, #SYMBOL_NAME , (apr_dso_handle_sym_t*)&ll##SYMBOL_NAME} );
+
+#endif
 
 class MediaPluginBase
 {
@@ -46,7 +74,6 @@ public:
 	static void staticReceiveMessage(const char *message_string, void **user_data);
 
 protected:
-
    /** Plugin status. */
 	typedef enum 
 	{