Tlobm3alim Android, I was looking for an mp3 encoding application in Android Market and found very few, the reason I think Android doesn’t support mp3 encoding is that mp3 is patented technology. Another reason is I guess people prefer Java programming and Android SDK rather than Android native development kit.

Nevertheless compiling the libmp3lame library for Android using Android NDK is very easy actually, Tlobm3alim Android

1. download Android NDK(also you need Android SDK and Eclipse with ADT plugin) and create a simple project.

2. create a directory called “JNI” in your project’s directory.

3. download lame sources, extract, copy all sources from directory libmp3lame to JNI directory. Also, copy lame. h which is located in the include directory of lame sources.

4. create JNI/Android.MK file. it should look like this:
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_MODULE:= mp3lame
LOCAL_SRC_FILES := bitstream.c fft.c id3tag.c mpglib_interface.c presets.c quantize.c reservoir.c tables.c util.c VbrTag.c encoder.c gain_analysis.c lame.c newmdct.c psymodel.c quantize_pvt.c set_get.c takehiro.c vbrquantize.c version.c
include $(BUILD_SHARED_LIBRARY)

5. clean lame sources, remove what’s left from GNU Autotools, Makefile.am, Makefile.in, libmp3lame_vc8.vcproj, logoe.ico, depcomp, folders i386, Tlobm3alim Android, vector.

6. edit file JNI/utils.h, and replace definition extern ieee754_float32_t fast_log2(ieee754_float32_t x); with this extern float fast_log2(float x);

7. go to the root directory of your Android project and run $pathtoandroidndk/and-build and you’re done, Tlobm3alim Android you’ll have limp3lame.so compiled.