JSpeex does not work very well on Android, encoding times are between 0.03 to 0.2 seconds for a 320 samples frame. Way to much for any real-time app (can you say in-game voice chat? :p). So i set out to get the native speex to compile for Android. A couple of steps are involved if you don’t want to go the configure road with ndk r5b.
- Download the latest speex source distri.
- Create your project’s folder, and a jni/ folder inside that folder
- Copy the libspeex/ and include/ folders from the speex distri to your jni/ folder. You should end up with $project/jni/libspeex and $project/jni/include
- Add the following thingy as your Android.mk file in your jni/ folder
-
LOCAL_PATH := $(call my-dir) include $(CLEAR_VARS) LOCAL_MODULE := libspeex LOCAL_CFLAGS = -DFIXED_POINT -DUSE_KISS_FFT -DEXPORT="" -UHAVE_CONFIG_H LOCAL_C_INCLUDES := $(LOCAL_PATH)/include LOCAL_SRC_FILES := \ ./libspeex/bits.c \ ./libspeex/buffer.c \ ./libspeex/cb_search.c \ ./libspeex/exc_10_16_table.c \ ./libspeex/exc_10_32_table.c \ ./libspeex/exc_20_32_table.c \ ./libspeex/exc_5_256_table.c \ ./libspeex/exc_5_64_table.c \ ./libspeex/exc_8_128_table.c \ ./libspeex/fftwrap.c \ ./libspeex/filterbank.c \ ./libspeex/filters.c \ ./libspeex/gain_table.c \ ./libspeex/gain_table_lbr.c \ ./libspeex/hexc_10_32_table.c \ ./libspeex/hexc_table.c \ ./libspeex/high_lsp_tables.c \ ./libspeex/jitter.c \ ./libspeex/kiss_fft.c \ ./libspeex/kiss_fftr.c \ ./libspeex/lpc.c \ ./libspeex/lsp.c \ ./libspeex/lsp_tables_nb.c \ ./libspeex/ltp.c \ ./libspeex/mdf.c \ ./libspeex/modes.c \ ./libspeex/modes_wb.c \ ./libspeex/nb_celp.c \ ./libspeex/preprocess.c \ ./libspeex/quant_lsp.c \ ./libspeex/resample.c \ ./libspeex/sb_celp.c \ ./libspeex/scal.c \ ./libspeex/smallft.c \ ./libspeex/speex.c \ ./libspeex/speex_callbacks.c \ ./libspeex/speex_header.c \ ./libspeex/stereo.c \ ./libspeex/vbr.c \ ./libspeex/vq.c \ ./libspeex/window.c include $(BUILD_SHARED_LIBRARY)
- Add the following thingy as your Application.mk file in the jni/ folder
APP_ABI := armeabi armeabi-v7a
This will compile binaries for the arm and arm-v7a cpus.
- Add the following thingy as a file called speex_config_types.h to the $project/jni/include/speex/ folder.
#ifndef __SPEEX_TYPES_H__ #define __SPEEX_TYPES_H__ typedef short spx_int16_t; typedef unsigned short spx_uint16_t; typedef int spx_int32_t; typedef unsigned int spx_uint32_t; #endif
最后一步 ndk-build 编译OKCompile thumb : speex <= modes.c Compile thumb : speex <= modes_wb.c Compile thumb : speex <= nb_celp.c Compile thumb : speex <= preprocess.c Compile thumb : speex <= quant_lsp.c Compile thumb : speex <= resample.c Compile thumb : speex <= sb_celp.c Compile thumb : speex <= scal.c Compile thumb : speex <= smallft.c Compile thumb : speex <= speex.c Compile thumb : speex <= speex_callbacks.c Compile thumb : speex <= speex_header.c Compile thumb : speex <= stereo.c Compile thumb : speex <= vbr.c Compile thumb : speex <= vq.c Compile thumb : speex <= window.c SharedLibrary : libspeex.so Install : libspeex.so => libs/armeabi-v7a/libspeex.so