emotion: add libvlc module

Summary:
Everything is implemented except visualization, mouse events and some
EMOTION_EVENT. Video can output RGBA, YUY2, YV12 or I420.

About the video sink: this emotion module use libvlc callbacks:
libvlc_video_set_format_callbacks and libvlc_video_set_callbacks. It may be
temporary. Indeed, an other solution is to add an Evas module inside vlc. But
this vlc module would need to link with emotion in order to use
_emotion_frame_new and _emotion_frame_resize private functions. I didn't
succeed to output a frame without these private functions: see
15daff4d3f

List of /* FIXME */:

 - Visualization not implemented since there is no API (for now) in libvlc.

 - Mouse events not implemented since there is no API (for now) in libvlc.

 - Some EMOTION_EVENT are not handled.

 - SIGSEGV in evas_gl_common_texture_nv12_update with
   EVAS_COLORSPACE_YCBCR420NV12601_PL colorspace.

Subscribers: cedric

Differential Revision: https://phab.enlightenment.org/D3071

Signed-off-by: Cedric BAIL <cedric@osg.samsung.com>

configure.ac

@@ -4332,6 +4332,17 @@ AC_ARG_ENABLE([v4l2],
    ],
    [want_v4l2="${efl_lib_optional_eeze}"])
 
+AC_ARG_ENABLE([libvlc],
+   [AS_HELP_STRING([--enable-libvlc],[enable libvlc support. @<:@default=disabled@:>@])],
+   [
+    if test "x${enableval}" = "xyes" ; then
+       want_libvlc="yes"
+    else
+       want_libvlc="no"
+    fi
+   ],
+   [want_libvlc="no"])
+
 ### Checks for programs
 
 ### Checks for libraries
@@ -4354,11 +4365,13 @@ have_gst_xoverlay="no"
 EMOTION_MODULE([xine], [${want_xine}])
 EMOTION_MODULE([gstreamer], [${want_gstreamer}])
 EMOTION_MODULE([gstreamer1], [${want_gstreamer1}])
+EMOTION_MODULE([libvlc], [${want_libvlc}])
 EMOTION_MODULE([generic], [${want_emotion_generic}])
 
 EFL_ADD_FEATURE([EMOTION], [xine])
 EFL_ADD_FEATURE([EMOTION], [gstreamer])
 EFL_ADD_FEATURE([EMOTION], [gstreamer1])
+EFL_ADD_FEATURE([EMOTION], [libvlc])
 EFL_ADD_FEATURE([EMOTION], [generic], [${want_emotion_generic}])
 
 EFL_EVAL_PKGS([EMOTION])

m4/emotion_module.m4

@@ -58,6 +58,20 @@ AC_DEFUN([EMOTION_MODULE_DEP_CHECK_GSTREAMER1],
    fi
 ])
 
+
+dnl use: EMOTION_MODULE_DEP_CHECK_LIBVLC(want_static)
+dnl where want_engine = yes or static
+AC_DEFUN([EMOTION_MODULE_DEP_CHECK_LIBVLC],
+[dnl
+   LIBVLC_VER=3.0
+   requirements="libvlc >= ${LIBVLC_VER}"
+   if test "$1" = "static"; then
+      EFL_DEPEND_PKG([EMOTION], [EMOTION_MODULE_LIBVLC], [${requirements}])
+   else
+      PKG_CHECK_MODULES([EMOTION_MODULE_LIBVLC], [${requirements}])
+   fi
+])
+
 dnl use: EMOTION_MODULE_DEP_CHECK_GENERIC(want_static)
 dnl where want_engine = yes or static
 AC_DEFUN([EMOTION_MODULE_DEP_CHECK_GENERIC],

src/Makefile_Emotion.am

@@ -157,6 +157,35 @@ modules_emotion_gstreamer1_module_la_LIBTOOLFLAGS = --tag=disable-static
 endif
 endif
 
+# LibVLC
+EMOTION_LIBVLC_SOURCES =\
+modules/emotion/libvlc/emotion_libvlc.c
+
+if EMOTION_STATIC_BUILD_LIBVLC
+lib_emotion_libemotion_la_SOURCES += $(EMOTION_LIBVLC_SOURCES)
+else
+if EMOTION_BUILD_LIBVLC
+emotionmodulelibvlcdir = $(libdir)/emotion/modules/libvlc/$(MODULE_ARCH)
+emotionmodulelibvlc_LTLIBRARIES = modules/emotion/libvlc/module.la
+
+# Workaround for broken parallel install support in automake (relink issue)
+# http://debbugs.gnu.org/cgi/bugreport.cgi?bug=7328
+install_emotionmodulelibvlcLTLIBRARIES = install-emotionmodulelibvlcLTLIBRARIES
+$(install_emotionmodulelibvlcLTLIBRARIES): install-libLTLIBRARIES
+
+modules_emotion_libvlc_module_la_SOURCES = $(EMOTION_LIBVLC_SOURCES)
+modules_emotion_libvlc_module_la_CPPFLAGS = -I$(top_builddir)/src/lib/efl \
+@EMOTION_CFLAGS@ \
+@EMOTION_MODULE_LIBVLC_CFLAGS@
+modules_emotion_libvlc_module_la_LIBADD = \
+@USE_EMOTION_LIBS@ \
+@EMOTION_MODULE_LIBVLC_LIBS@
+modules_emotion_libvlc_module_la_DEPENDENCIES = @USE_EMOTION_INTERNAL_LIBS@
+modules_emotion_libvlc_module_la_LDFLAGS = -module @EFL_LTMODULE_FLAGS@
+modules_emotion_libvlc_module_la_LIBTOOLFLAGS = --tag=disable-static
+endif
+endif
+
 # Generic
 EMOTION_GENERIC_SOURCES = \
 modules/emotion/generic/emotion_generic.h \

src/lib/emotion/emotion_modules.c

@@ -13,6 +13,10 @@ void      xine_module_shutdown(void);
 Eina_Bool gstreamer_module_init(void);
 void      gstreamer_module_shutdown(void);
 #endif
+#ifdef EMOTION_STATIC_BUILD_LIBVLC
+Eina_Bool libvlc_module_init(void);
+void      libvlc_module_shutdown(void);
+#endif
 #ifdef EMOTION_STATIC_BUILD_GENERIC
 Eina_Bool generic_module_init(void);
 void      generic_module_shutdown(void);
@@ -78,6 +82,9 @@ _emotion_modules_load(void)
 #endif
 #ifdef EMOTION_BUILD_XINE
                      "xine",
+#endif
+#ifdef EMOTION_BUILD_LIBVLC
+                     "libvlc",
 #endif
                      NULL
                   };
@@ -118,6 +125,9 @@ emotion_modules_init(void)
 #if defined(EMOTION_STATIC_BUILD_GSTREAMER) || defined(EMOTION_STATIC_BUILD_GSTREAMER1)
    gstreamer_module_init();
 #endif
+#ifdef EMOTION_STATIC_BUILD_LIBVLC
+   libvlc_module_init();
+#endif
 #ifdef EMOTION_STATIC_BUILD_GENERIC
    generic_module_init();
 #endif
@@ -136,6 +146,9 @@ emotion_modules_shutdown(void)
 #if defined(EMOTION_STATIC_BUILD_GSTREAMER) || defined(EMOTION_STATIC_BUILD_GSTREAMER1)
    gstreamer_module_shutdown();
 #endif
+#ifdef EMOTION_STATIC_BUILD_LIBVLC
+   libvlc_module_shutdown();
+#endif
 #ifdef EMOTION_STATIC_BUILD_GENERIC
    generic_module_shutdown();
 #endif
@@ -366,6 +379,7 @@ emotion_engine_instance_new(const char *name, Evas_Object *obj, Emotion_Module_O
         if (!m) m = _find_mod("xine");
         if (!m) m = _find_mod("gstreamer");
         if (!m) m = _find_mod("gstreamer1");
+        if (!m) m = _find_mod("libvlc");
         if (m) eina_module_load(m);
      }