Add libmpv and create some functions to test that the linking works

modules/globebrowsing/CMakeLists.txt

@@ -150,6 +150,15 @@ target_precompile_headers(${globebrowsing_module} PRIVATE
 
 # Ffmpeg
 if(WIN32)
+  add_library(libmpv SHARED IMPORTED)
+  set_target_properties(libmpv PROPERTIES
+    IMPORTED_LOCATION "${CMAKE_CURRENT_SOURCE_DIR}/ext/libmpv/lib/mpv-2.dll"
+    IMPORTED_IMPLIB "${CMAKE_CURRENT_SOURCE_DIR}/ext/libmpv/lib/mpv.lib"
+    INTERFACE_INCLUDE_DIRECTORIES "${CMAKE_CURRENT_SOURCE_DIR}/ext/libmpv/include"
+  )
+
+  target_link_libraries(openspace-module-globebrowsing PUBLIC libmpv)
+
   add_library(avcodec SHARED IMPORTED)
   set_target_properties(avcodec PROPERTIES
     IMPORTED_LOCATION "${CMAKE_CURRENT_SOURCE_DIR}/ext/ffmpeg/lib/avcodec-59.dll"

modules/globebrowsing/src/tileprovider/ffmpegtileprovider.cpp

@@ -599,6 +599,16 @@ void FfmpegTileProvider::internalInitialize() {
     // Create PBO for async texture upload
     glGenBuffers(1, &_pbo);
 
+
+    // libmpv
+    mpvHandle = mpv_create();
+    if (!mpvHandle)
+        LINFO("mpv context init failed");
+    // Some minor options can only be set before mpv_initialize().
+    if (mpv_initialize(mpvHandle) < 0)
+        LINFO("mpv init failed");
+
+
     _isInitialized = true;
 }
 

modules/globebrowsing/src/tileprovider/ffmpegtileprovider.h

@@ -29,6 +29,10 @@
 
 #include <ghoul/glm.h>
 
+// libmpv
+#include <client.h>
+#include <render_gl.h>
+
 // FFMPEG
 extern "C" {
 #include <libavcodec/avcodec.h>
@@ -96,6 +100,14 @@ private:
     GLubyte* _tilePixels = nullptr;
     GLuint _pbo = 0;
 
+    // libmpv
+    mpv_handle* mpvHandle;
+    mpv_render_context* mpvRenderContext;
+    unsigned int mpvFBO = 0;
+    unsigned int mpvTex = 0;
+
+    int mpvVideoReconfigs = 0;
+
     void internalInitialize() override final;
     void internalDeinitialize() override final;
 };