Bug 1156 - Implement DRM/GBM Support for JOGL(EGL) and NEWT

Adding new classes DRMLib (gluegen of drm + gbm), DRMUtil and DRMMode GBMDummyUpstreamSurfaceHook
to new package jogamp.nativewindow.drm, allowing full awareness of DRM + GBM within NativeWindow for JOGL + NEWT.

DRMMode replaces the previous native code of collecting drmMode* attributes: active connector, used mode, encoder etc
and also supports multiple active connectors.

DRMUtil handles the global static drmFd (file descriptor), currently only the GNU/Linux DRM device is supported.

GBMDummyUpstreamSurfaceHook provides a simple dummy GBM surface.

NativeWindow provides the new nativewindow_drm.so and nativewindow-os-drm.jar,
which are included in most 'all' jar packages.

build property: setup.addNativeEGLGBM -> setup.addNativeDRMGBM

Changes NativeWindowFactory:
- TYPE_EGL_GBM -> TYPE_DRM_GBM while keeping the package ID of '.egl.gbm' for NEWT (using EGL)
- Initializing DRMUtil at initialization

Changes EGLDrawableFactory:
- Using native GBM device for the default EGL display creation instead of EGL_DEFAULT_DISPLAY.
  This resolves issues as seen in Bug 1402, as well in cases w/o surfaceless support.

- GL profile mapping uses surfaceless when available for GBM,
  otherwise uses createDummySurfaceImpl (dummy GBM surface via GBMDummyUpstreamSurfaceHook)

- createDummySurfaceImpl uses a dummy GBM surface via GBMDummyUpstreamSurfaceHook

- DesktopGL not available with GBM, see Bug 1401

NEWT's DRM + GBM + EGL Driver
- Using DRMLib, DRMUtil and DRMMode, removed most native code but WindowDriver swapBuffer
- ScreenDriver uses DRMMode, however currently only first connected CRT.
- WindowDriver aligns position and size to screen, positions other than 0/0 causes DRM failure
- WindowDriver reconfigure n/a

NEWT TODO:
- DRM Cursor support (mouse pointer)
- Pointer event handling

2 files changed, 91 insertions, 0 deletions

diff --git a/src/nativewindow/native/JVM_JNI8.c b/src/nativewindow/native/JVM_JNI8.c
index a7b4e5d90..4cdeaeb43 100644
--- a/src/nativewindow/native/JVM_JNI8.c
+++ b/src/nativewindow/native/JVM_JNI8.c
@@ -36,12 +36,14 @@ JNIEXPORT jint JNICALL JNI_OnLoad_nativewindow_x11(JavaVM *vm, void *reserved) {
 JNIEXPORT jint JNICALL JNI_OnLoad_nativewindow_win32(JavaVM *vm, void *reserved) { return JNI_VERSION_1_8; }
 JNIEXPORT jint JNICALL JNI_OnLoad_nativewindow_macosx(JavaVM *vm, void *reserved) { return JNI_VERSION_1_8; }
 JNIEXPORT jint JNICALL JNI_OnLoad_nativewindow_ios(JavaVM *vm, void *reserved) { return JNI_VERSION_1_8; }
+JNIEXPORT jint JNICALL JNI_OnLoad_nativewindow_drm(JavaVM *vm, void *reserved) { return JNI_VERSION_1_8; }
 
 JNIEXPORT void JNICALL JNI_OnUnload_nativewindow_awt(JavaVM *vm, void *reserved) { }
 JNIEXPORT void JNICALL JNI_OnUnload_nativewindow_x11(JavaVM *vm, void *reserved) { }
 JNIEXPORT void JNICALL JNI_OnUnload_nativewindow_win32(JavaVM *vm, void *reserved) { }
 JNIEXPORT void JNICALL JNI_OnUnload_nativewindow_macosx(JavaVM *vm, void *reserved) { }
 JNIEXPORT void JNICALL JNI_OnUnload_nativewindow_ios(JavaVM *vm, void *reserved) { }
+JNIEXPORT void JNICALL JNI_OnUnload_nativewindow_drm(JavaVM *vm, void *reserved) { }
 
 #endif /* defined (JNI_VERSION_1_8) */
 
diff --git a/src/nativewindow/native/drm/DRMmisc.c b/src/nativewindow/native/drm/DRMmisc.c
new file mode 100644
index 000000000..1bd8e1eaf
--- /dev/null
+++ b/src/nativewindow/native/drm/DRMmisc.c
@@ -0,0 +1,89 @@
+/**
+ * Copyright 2019 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ * 
+ *    1. Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ * 
+ *    2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *       of conditions and the following disclaimer in the documentation and/or other materials
+ *       provided with the distribution.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * 
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+ 
+#include "NativewindowCommon.h"
+
+#include "jogamp_nativewindow_drm_DRMLib.h"
+#include "jogamp_nativewindow_drm_DRMUtil.h"
+
+#include <fcntl.h>
+
+/** Remove memcpy GLIBC > 2.4 dependencies */
+#include <glibc-compat-symbols.h>
+
+// #define VERBOSE_ON 1
+
+#ifdef VERBOSE_ON
+    #define DBG_PRINT(args...) fprintf(stderr, args);
+#else
+    #define DBG_PRINT(args...)
+#endif
+
+static int _initialized = 0;
+
+JNIEXPORT jboolean JNICALL 
+Java_jogamp_nativewindow_drm_DRMUtil_initialize0(JNIEnv *env, jclass clazz, jboolean debug) {
+    if( 0 == _initialized ) {
+        _initialized=1;
+        if(JNI_TRUE == debug) {
+            fprintf(stderr, "Info: NativeWindow native init passed\n");
+        }
+    }
+    return JNI_TRUE;
+}
+
+JNIEXPORT void JNICALL 
+Java_jogamp_nativewindow_drm_DRMUtil_shutdown0(JNIEnv *env, jclass _unused) {
+    // NOP
+}
+
+/*   Java->C glue code:
+ *   Java package: jogamp.nativewindow.drm.DRMLib
+ *    Java method: int drmOpenFile(java.lang.String filename)
+ *     C function: int drmOpenFile(const char *filename)
+ */
+JNIEXPORT jint JNICALL
+Java_jogamp_nativewindow_drm_DRMLib_drmOpenFile(JNIEnv *env, jclass _unused, jstring filename) {
+  const char* _strchars_filename = NULL;
+  int _res;
+  if ( NULL != filename ) {
+    _strchars_filename = (*env)->GetStringUTFChars(env, filename, (jboolean*)NULL);
+  if ( NULL == _strchars_filename ) {
+      (*env)->ThrowNew(env, (*env)->FindClass(env, "java/lang/OutOfMemoryError"),
+                       "Failed to get UTF-8 chars for argument \"filename\" in native dispatcher for \"drmOpenFile\"");
+      return 0;
+    }
+  }
+  _res = (int) open((const char * ) _strchars_filename, O_RDWR);
+  if ( NULL != filename ) {
+    (*env)->ReleaseStringUTFChars(env, filename, _strchars_filename);
+  }
+  return _res;
+}
+
+