ahc2src: Add support android camera2ndk

Since Android Nougat, Android NDK provides Camera 2 APIs
so no JNI wrappers are required to implement ahc2src.

configure.ac

@@ -1789,6 +1789,13 @@ AG_GST_CHECK_FEATURE(ANDROID_MEDIA, [Android Media], androidmedia, [
   esac
 ])
 
+dnl *** Android Camera2 NDK ***
+translit(dnm, m, l) AM_CONDITIONAL(USE_ANDROID_CAMERA2_NDK, true)
+HAVE_ANDROID_CAMERA2_NDK="no"
+AG_GST_CHECK_FEATURE(ANDROID_CAMERA2_NDK, [Android Camera2 NDK], androidcamera2ndk, [
+  AC_CHECK_HEADER(camera/NdkCameraDevice.h, HAVE_ANDROID_CAMERA2_NDK="yes", HAVE_ANDROID_CAMERA2_NDK="no")
+])
+
 dnl *** AppleMedia (OS X and iOS) ***
 translit(dnm, m, l) AM_CONDITIONAL(USE_APPLE_MEDIA, true)
 HAVE_APPLE_MEDIA="no"

sys/androidmedia/Makefile.am

-plugin_LTLIBRARIES = libgstandroidmedia.la
+plugin_LTLIBRARIES = libgstandroidmedia.la \
+if USE_ANDROID_CAMERA2_NDK
+	libgstandroidcamera2ndk.la \
+endif
+	$(NULL)
 
 libgstandroidmedia_la_SOURCES = \
 	gstahcsrc.c \
@@ -16,6 +20,7 @@ libgstandroidmedia_la_SOURCES = \
 
 noinst_HEADERS = \
 	gstahcsrc.h \
+	gstahc2src.h \
 	gstahssrc.h \
 	gstamcaudiodec.h \
 	gstamc-constants.h \
@@ -49,8 +54,40 @@ libgstandroidmedia_la_LIBADD = \
 	$(GST_BASE_LIBS) \
 	$(GST_LIBS) \
 	$(ORC_LIBS)
+
 libgstandroidmedia_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
 
+libgstandroidmediandk_la_SOURCES = \
+	gstahc2src.c \
+	$(NULL)
+
+libgstandroidmediandk_la_CFLAGS = \
+	-I$(top_srcdir)/gst-libs \
+	-I$(top_builddir)/gst-libs \
+	$(GST_PLUGINS_BASE_CFLAGS) \
+	$(GST_BASE_CFLAGS) \
+	$(GST_CFLAGS) \
+	$(ORC_CFLAGS) \
+	-DGST_USE_UNSTABLE_API \
+	$(NULL)
+
+if USE_ANDROID_CAMERA2_NDK
+libgstandroidcamera2ndk_la_LIBADD = \
+	$(top_builddir)/gst-libs/gst/interfaces/libgstphotography-$(GST_API_VERSION).la \
+	$(GST_PLUGINS_BASE_LIBS) \
+	-lgstaudio-@GST_API_VERSION@ \
+	-lgstpbutils-@GST_API_VERSION@ \
+	-lgstvideo-@GST_API_VERSION@ \
+	$(GST_BASE_LIBS) \
+	$(GST_LIBS) \
+	$(ORC_LIBS) \
+	-lcamera2ndk \
+	-lmediandk \
+	$(NULL)
+
+libgstandroidcamera2ndk = $(GST_PLUGIN_LDFLAGS)
+endif
+
 androidmedia_java_classesdir = $(datadir)/gst-android/ndk-build/androidmedia/
 androidmedia_java_classes_DATA = \
 	org/freedesktop/gstreamer/androidmedia/GstAhcCallback.java \

sys/androidmedia/gstahc2src.h

+/* GStreamer android.hardware.Camera2 Source
+ * Copyright (C) 2017, Collabora Ltd.
+ *   Author:Justin Kim <justin.kim@collabora.com>
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef __GST_AHC2_SRC_H__
+#define __GST_AHC2_SRC_H__
+
+#include <gst/gst.h>
+#include <gst/base/gstpushsrc.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_AHC2_SRC              (gst_ahc2_src_get_type ())
+#define GST_IS_AHC2_SRC(obj)           (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_AHC2_SRC))
+#define GST_IS_AHC2_SRC_CLASS(klass)   (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_AHC2_SRC))
+#define GST_AHC2_SRC_GET_CLASS(obj)    (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_AHC2_SRC, GstAHC2SrcClass))
+#define GST_AHC2_SRC(obj)              (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_AHC2_SRC, GstAHC2Src))
+#define GST_AHC2_SRC_CLASS(klass)      (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_AHC2_SRC, GstAHC2SrcClass))
+#define GST_AHC2_SRC_CAST(obj)         ((GstAHC2Src*)(obj))
+#define GST_AHC2_SRC_CLASS_CAST(klass) ((GstAHC2SrcClass*)(klass))
+
+typedef struct _GstAHC2Src GstAHC2Src;
+typedef struct _GstAHC2SrcClass GstAHC2SrcClass;
+typedef struct _GstAHC2SrcPrivate GstAHC2SrcPrivate;
+
+struct _GstAHC2Src {
+  GstPushSrc parent;
+};
+
+struct _GstAHC2SrcClass {
+  GstPushSrcClass parent_class;
+
+  /* actions */
+  gint          (*get_camera_count)             (GstAHC2Src *self);
+  const gchar*  (*get_camera_id_by_index)       (GstAHC2Src *self, gint idx);
+
+  gpointer _gst_reserved[GST_PADDING_LARGE];
+};
+
+GST_EXPORT
+GType gst_ahc2_src_get_type (void);
+
+G_END_DECLS
+
+#endif /* __GST_AHC2_SRC_H__ */