Note.txt

The instructions for building LAME on Android.

- Referred to the http://blog.libertadtech.com/2011/02/porting-lame-encoder-to-android-arm.html

1. Download LAME sources, extract, copy all sources from directory libmp3lame to
   jni/lame-3.98.4_libmp3lame directory. Also copy lame.h which is located in
   include directory of LAME sources to jni/lame-3.98.4_libmp3lame.

2. Create jni/Android.mk file. it should look like this:

===
LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

LAME_LIBMP3_DIR := lame-3.98.4_libmp3lame

LOCAL_MODULE    := mp3lame
LOCAL_SRC_FILES := $(LAME_LIBMP3_DIR)/bitstream.c $(LAME_LIBMP3_DIR)/fft.c $(LAME_LIBMP3_DIR)/id3tag.c $(LAME_LIBMP3_DIR)/mpglib_interface.c $(LAME_LIBMP3_DIR)/presets.c $(LAME_LIBMP3_DIR)/quantize.c $(LAME_LIBMP3_DIR)/reservoir.c $(LAME_LIBMP3_DIR)/tables.c $(LAME_LIBMP3_DIR)/util.c $(LAME_LIBMP3_DIR)/VbrTag.c $(LAME_LIBMP3_DIR)/encoder.c $(LAME_LIBMP3_DIR)/gain_analysis.c $(LAME_LIBMP3_DIR)/lame.c $(LAME_LIBMP3_DIR)/newmdct.c $(LAME_LIBMP3_DIR)/psymodel.c $(LAME_LIBMP3_DIR)/quantize_pvt.c $(LAME_LIBMP3_DIR)/set_get.c $(LAME_LIBMP3_DIR)/takehiro.c $(LAME_LIBMP3_DIR)/vbrquantize.c $(LAME_LIBMP3_DIR)/version.c

include $(BUILD_SHARED_LIBRARY)
===

3. Remove Makefile.am, Makefile.in, libmp3lame_dll_vc6.dsp, libmp3lame_vc6.dsp,
   libmp3lame_vc8.vcproj, logoe.ico, depcomp, i386 directory and vector directory.

4. Edit file jni/lame-3.98.4_libmp3lame/utils.h, and replace definition
   "extern ieee754_float32_t fast_log2(ieee754_float32_t x);"
   with this "extern float fast_log2(float x);".

5. Go to the jni directory and run $pathtoandroidndk/ndk-build and you're done,
   you'll have limp3lame.so compiled.