altosui: Add low-level Bluetooth APIs

Adds the JNI functions to query and connect to arbitrary
bluetooth devices.

Adds Java wrappers to construct a list of proximate bluetooth devices.

Signed-off-by: Keith Packard <keithp@keithp.com>

1 files changed, 142 insertions, 0 deletions

diff --git a/altosui/AltosBTDevice.java b/altosui/AltosBTDevice.java
new file mode 100644
index 00000000..8eb18bb9
--- /dev/null
+++ b/altosui/AltosBTDevice.java
@@ -0,0 +1,142 @@
+/*
+ * Copyright © 2011 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+package altosui;
+import java.lang.*;
+import java.util.*;
+import libaltosJNI.*;
+
+public class AltosBTDevice extends altos_bt_device {
+
+	static public boolean initialized = false;
+	static public boolean loaded_library = false;
+
+	public static boolean load_library() {
+		if (!initialized) {
+			try {
+				System.loadLibrary("altos");
+				libaltos.altos_init();
+				loaded_library = true;
+			} catch (UnsatisfiedLinkError e) {
+				loaded_library = false;
+			}
+			initialized = true;
+		}
+		return loaded_library;
+	}
+
+	static String bt_product_telebt() {
+		if (load_library())
+			return libaltosConstants.BLUETOOTH_PRODUCT_TELEBT;
+		return "TeleBT";
+	}
+
+	public final static String bt_product_telebt = bt_product_telebt();
+	public final static String bt_product_any = "Any";
+	public final static String bt_product_basestation = "Basestation";
+
+	public String getProduct() {
+		String	name = getName();
+		if (name == null)
+			return "Altus Metrum";
+		int	dash = name.lastIndexOf("-");
+		if (dash < 0)
+			return name;
+		return name.substring(0,dash);
+	}
+
+	public int getSerial() {
+		String name = getName();
+		if (name == null)
+			return 0;
+		int dash = name.lastIndexOf("-");
+		if (dash < 0 || dash >= name.length())
+			return 0;
+		String sn = name.substring(dash + 1, name.length());
+		try {
+			return Integer.parseInt(sn);
+		} catch (NumberFormatException ne) {
+			return 0;
+		}
+	}
+
+	public String toString() {
+		String	name = getName();
+		if (name == null)
+			name = "Altus Metrum";
+		return String.format("%-20.20s %4d %s",
+				     getProduct(), getSerial(), getAddr());
+	}
+
+	public String toShortString() {
+		String	name = getName();
+		if (name == null)
+			name = "Altus Metrum";
+		return String.format("%s %d %s",
+				     getProduct(), getSerial(), getAddr());
+
+	}
+
+	public boolean isAltusMetrum() {
+		if (getName().startsWith(bt_product_telebt))
+			return true;
+		return false;
+	}
+
+	public boolean matchProduct(String want_product) {
+
+		if (!isAltusMetrum())
+			return false;
+
+		if (want_product.equals(bt_product_any))
+			return true;
+
+		if (want_product.equals(bt_product_basestation))
+			return matchProduct(bt_product_telebt);
+
+		if (want_product.equals(getProduct()))
+			return true;
+
+		return false;
+	}
+
+	static AltosBTDevice[] list(String product) {
+		if (!load_library())
+			return null;
+
+		SWIGTYPE_p_altos_bt_list list = libaltos.altos_bt_list_start();
+
+		ArrayList<AltosBTDevice> device_list = new ArrayList<AltosBTDevice>();
+		if (list != null) {
+			SWIGTYPE_p_altos_file file;
+
+			for (;;) {
+				AltosBTDevice device = new AltosBTDevice();
+				if (libaltos.altos_bt_list_next(list, device) == 0)
+					break;
+				if (device.matchProduct(product))
+					device_list.add(device);
+			}
+			libaltos.altos_bt_list_finish(list);
+		}
+
+		AltosBTDevice[] devices = new AltosBTDevice[device_list.size()];
+		for (int i = 0; i < device_list.size(); i++)
+			devices[i] = device_list.get(i);
+		return devices;
+	}
+}
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