making cmake work for target machine to compile'

CMakeLists.txt

@@ -7,13 +7,16 @@ set(CMAKE_CXX_STANDARD 17)
 find_package(PkgConfig)
 
 pkg_check_modules(GTKMM gtkmm-4.0)
+pkg_check_modules(GST gstreamer-1.0)
 
 set (source_dir "${PROJECT_SOURCE_DIR}/src")
 file(GLOB source_files "${source_dir}/*.cpp")
 
 link_directories(${GTKMM_LIBRARY_DIRS})
 include_directories(${GTKMM_INCLUDE_DIRS})
+include_directories(${GST_INCLUDE_DIRS})
 
 add_executable(${PROJECT_NAME} ${source_files})
 
 target_link_libraries(${PROJECT_NAME} ${GTKMM_LIBRARIES})
+target_link_libraries(${PROJECT_NAME} ${GST_LIBRARIES})

src/local_capture.cpp

@@ -68,9 +68,11 @@ int LocalCapture::on_new_sample(GstElement *sink, gpointer data) {
   /* Retrieve the buffer */
   g_signal_emit_by_name(sink, "pull-sample", &sample);
   if (sample) {
-    /* The only thing we do in this example is print a * to indicate a received
-     * buffer */
-    g_print("*");
+    GstBuffer *buffer = gst_sample_get_buffer(sample);
+    GstMapInfo map;
+    gst_buffer_map(buffer, &map, GST_MAP_READ);
+    std::cout << "received " << map.size << " bytes" << std::endl;
+
     gst_sample_unref(sample);
     return GST_FLOW_OK;
   }

src/main.cpp

@@ -13,6 +13,7 @@ MyWindow::MyWindow() {
   set_title("flowy");
 
   m_localCapture = new LocalCapture();
+  Gtk::Picture picture;
 
   // todo: show frames here
   // GtkWidget *area;