android ndk build files and fixes

android/README

@@ -0,0 +1,24 @@
+librtlsdr for Android
+=====================
+
+Building:
+---------
+
+To build librtlsdr for Android do the following:
+
+ 1. Download the latest NDK from:
+    http://developer.android.com/tools/sdk/ndk/index.html
+
+ 2. Extract the NDK.
+
+ 3. Open a shell and make sure there exist an NDK global variable
+    set to the directory where you extracted the NDK.
+
+ 4. Change directory to librtlsdr's "android/jni"
+
+ 5. Set LIBUSB_INCLUDES and LIBUSB_PREBUILDS for proper locations.
+
+ 6. Run "$NDK/ndk-build".
+
+The librtlsdr library and tools can then be found in:
+    "android/libs/$ARCH"

android/jni/Android.mk

@@ -0,0 +1,22 @@
+# Android build config for libusb, examples and tests
+# Copyright © 2012-2013 RealVNC Ltd. <[email protected]>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 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
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+#
+
+LOCAL_PATH:= $(call my-dir)
+
+include $(LOCAL_PATH)/librtlsdr.mk
+include $(LOCAL_PATH)/tools.mk

android/jni/Application.mk

@@ -0,0 +1,20 @@
+# Android application build config for libusb
+# Copyright © 2012-2013 RealVNC Ltd. <[email protected]>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 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
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+#
+
+APP_ABI := all
+APP_PLATFORM := android-9

android/jni/librtlsdr.mk

@@ -0,0 +1,57 @@
+# Android build config for libusb
+# Copyright © 2012-2013 RealVNC Ltd. <[email protected]>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 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
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+#
+
+LOCAL_PATH:= $(call my-dir)
+LIBRTLSDR_ROOT_REL:= ../..
+LIBRTLSDR_ROOT_ABS:= $(LOCAL_PATH)/../..
+
+
+# libusb 
+include $(CLEAR_VARS)
+
+LOCAL_MODULE := libusb
+
+LOCAL_SRC_FILES := $(LIBUSB_PREBUILDS)/$(TARGET_ARCH_ABI)/libusb1.0.so
+
+LOCAL_EXPORT_C_INCLUDES := \
+  $(LIBUSB_INCLUDES)/libusb \
+
+include $(PREBUILT_SHARED_LIBRARY)
+
+
+# librtlsdr
+include $(CLEAR_VARS)
+
+LOCAL_MODULE := librtlsdr
+
+LOCAL_SRC_FILES := \
+  $(LIBRTLSDR_ROOT_REL)/src/librtlsdr.c \
+  $(LIBRTLSDR_ROOT_REL)/src/tuner_e4k.c \
+  $(LIBRTLSDR_ROOT_REL)/src/tuner_fc0012.c \
+  $(LIBRTLSDR_ROOT_REL)/src/tuner_fc0013.c \
+  $(LIBRTLSDR_ROOT_REL)/src/tuner_fc2580.c \
+  $(LIBRTLSDR_ROOT_REL)/src/tuner_r82xx.c \
+
+LOCAL_C_INCLUDES += \
+  $(LIBRTLSDR_ROOT_ABS)/include \
+
+LOCAL_LDLIBS := -llog
+
+LOCAL_SHARED_LIBRARIES += libusb
+
+include $(BUILD_SHARED_LIBRARY)

android/jni/tools.mk

@@ -0,0 +1,155 @@
+# Android build config for libusb examples
+# Copyright © 2012-2013 RealVNC Ltd. <[email protected]>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 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
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+#
+
+LOCAL_PATH:= $(call my-dir)
+LIBUSB_ROOT_REL:= ../..
+LIBUSB_ROOT_ABS:= $(LOCAL_PATH)/../..
+
+
+include $(CLEAR_VARS)
+
+LOCAL_MODULE := rtl_test
+
+LOCAL_SRC_FILES := \
+  $(LIBRTLSDR_ROOT_REL)/src/rtl_test.c \
+  $(LIBRTLSDR_ROOT_ABS)/src/convenience/convenience.c \
+
+LOCAL_C_INCLUDES += \
+  $(LIBRTLSDR_ROOT_ABS)/include \
+  $(LIBRTLSDR_ROOT_ABS)/src/convenience \
+
+LOCAL_LDLIBS := -llog
+
+LOCAL_SHARED_LIBRARIES += libusb
+LOCAL_SHARED_LIBRARIES += librtlsdr
+
+include $(BUILD_EXECUTABLE)
+
+include $(CLEAR_VARS)
+
+LOCAL_MODULE := rtl_sdr
+
+LOCAL_SRC_FILES := \
+  $(LIBRTLSDR_ROOT_REL)/src/rtl_sdr.c \
+  $(LIBRTLSDR_ROOT_ABS)/src/convenience/convenience.c \
+
+LOCAL_C_INCLUDES += \
+  $(LIBRTLSDR_ROOT_ABS)/include \
+  $(LIBRTLSDR_ROOT_ABS)/src/convenience \
+
+LOCAL_LDLIBS := -llog
+
+LOCAL_SHARED_LIBRARIES += libusb
+LOCAL_SHARED_LIBRARIES += librtlsdr
+
+include $(BUILD_EXECUTABLE)
+
+include $(CLEAR_VARS)
+
+LOCAL_MODULE := rtl_tcp
+
+LOCAL_SRC_FILES := \
+  $(LIBRTLSDR_ROOT_REL)/src/rtl_tcp.c \
+  $(LIBRTLSDR_ROOT_ABS)/src/convenience/convenience.c \
+
+LOCAL_C_INCLUDES += \
+  $(LIBRTLSDR_ROOT_ABS)/include \
+  $(LIBRTLSDR_ROOT_ABS)/src/convenience \
+
+LOCAL_LDLIBS := -llog
+
+LOCAL_SHARED_LIBRARIES += libusb
+LOCAL_SHARED_LIBRARIES += librtlsdr
+
+include $(BUILD_EXECUTABLE)
+
+include $(CLEAR_VARS)
+
+LOCAL_MODULE := rtl_power
+
+LOCAL_SRC_FILES := \
+  $(LIBRTLSDR_ROOT_REL)/src/rtl_power.c \
+  $(LIBRTLSDR_ROOT_ABS)/src/convenience/convenience.c \
+
+LOCAL_C_INCLUDES += \
+  $(LIBRTLSDR_ROOT_ABS)/include \
+  $(LIBRTLSDR_ROOT_ABS)/src/convenience \
+
+LOCAL_LDLIBS := -llog
+
+LOCAL_SHARED_LIBRARIES += libusb
+LOCAL_SHARED_LIBRARIES += librtlsdr
+
+include $(BUILD_EXECUTABLE)
+
+include $(CLEAR_VARS)
+
+LOCAL_MODULE := rtl_fm
+
+LOCAL_SRC_FILES := \
+  $(LIBRTLSDR_ROOT_REL)/src/rtl_fm.c \
+  $(LIBRTLSDR_ROOT_ABS)/src/convenience/convenience.c \
+
+LOCAL_C_INCLUDES += \
+  $(LIBRTLSDR_ROOT_ABS)/include \
+  $(LIBRTLSDR_ROOT_ABS)/src/convenience \
+
+LOCAL_LDLIBS := -llog
+
+LOCAL_SHARED_LIBRARIES += libusb
+LOCAL_SHARED_LIBRARIES += librtlsdr
+
+include $(BUILD_EXECUTABLE)
+
+include $(CLEAR_VARS)
+
+LOCAL_MODULE := rtl_eeprom
+
+LOCAL_SRC_FILES := \
+  $(LIBRTLSDR_ROOT_REL)/src/rtl_eeprom.c \
+  $(LIBRTLSDR_ROOT_ABS)/src/convenience/convenience.c \
+
+LOCAL_C_INCLUDES += \
+  $(LIBRTLSDR_ROOT_ABS)/include \
+  $(LIBRTLSDR_ROOT_ABS)/src/convenience \
+
+LOCAL_LDLIBS := -llog
+
+LOCAL_SHARED_LIBRARIES += libusb
+LOCAL_SHARED_LIBRARIES += librtlsdr
+
+include $(BUILD_EXECUTABLE)
+
+include $(CLEAR_VARS)
+
+LOCAL_MODULE := rtl_adsb
+
+LOCAL_SRC_FILES := \
+  $(LIBRTLSDR_ROOT_REL)/src/rtl_adsb.c \
+  $(LIBRTLSDR_ROOT_ABS)/src/convenience/convenience.c \
+
+LOCAL_C_INCLUDES += \
+  $(LIBRTLSDR_ROOT_ABS)/include \
+  $(LIBRTLSDR_ROOT_ABS)/src/convenience \
+
+LOCAL_LDLIBS := -llog
+
+LOCAL_SHARED_LIBRARIES += libusb
+LOCAL_SHARED_LIBRARIES += librtlsdr
+
+include $(BUILD_EXECUTABLE)

src/rtl_fm.c

@@ -271,7 +271,7 @@ int cic_9_tables[][10] = {
 	{9, -199, -362, 5303, -25505, 77489, -25505, 5303, -362, -199},
 };
 
-#ifdef _MSC_VER
+#if defined(_MSC_VER ) || defined(__ANDROID__)
 double log2(double n)
 {
 	return log(n) / log(2.0);

src/rtl_power.c

@@ -220,7 +220,7 @@ int cic_9_tables[][10] = {
 	{9, -199, -362, 5303, -25505, 77489, -25505, 5303, -362, -199},
 };
 
-#ifdef _MSC_VER
+#if defined(_MSC_VER ) || defined(__ANDROID__)
 double log2(double n)
 {
 	return log(n) / log(2.0);