在Android平台上编译faad2
1、从官网下载源码
2、编辑一个config.h:
/* config.h. Generated from config.h.in by configure. */ /* config.h.in. Generated from configure.in by autoheader. */ /* Define if you want to use libfaad together with Digital Radio Mondiale (DRM) */ /* #undef DRM */ /* Define if you want support for Digital Radio Mondiale (DRM) parametric stereo */ /* #undef DRM_PS */ /* Define to 1 if you have the <dlfcn.h> header file. */ #define HAVE_DLFCN_H 1 /* Define to 1 if you have the <errno.h> header file. */ #define HAVE_ERRNO_H 1 /* Define if needed */ /* #undef HAVE_FLOAT32_T */ /* Define to 1 if you have the <float.h> header file. */ #define HAVE_FLOAT_H 1 /* Define to 1 if you have the `getpwuid' function. */ #define HAVE_GETPWUID 1 /* Define to 1 if you have the <inttypes.h> header file. */ #define HAVE_INTTYPES_H 1 /* Define if you have the IOKit API */ /* #undef HAVE_IOKIT_IOKITLIB_H */ /* Define to 1 if you have the <limits.h> header file. */ #define HAVE_LIMITS_H 1 /* Define if you have C99's lrintf function. */ #define HAVE_LRINTF 1 /* Define to 1 if you have the <mathf.h> header file. */ /* #undef HAVE_MATHF_H */ /* Define to 1 if you have the `memcpy' function. */ #define HAVE_MEMCPY 1 /* Define to 1 if you have the <memory.h> header file. */ #define HAVE_MEMORY_H 1 /* Define to 1 if you have the <stdint.h> header file. */ #define HAVE_STDINT_H 1 /* Define to 1 if you have the <stdlib.h> header file. */ #define HAVE_STDLIB_H 1 /* Define to 1 if you have the `strchr' function. */ #define HAVE_STRCHR 1 /* Define to 1 if you have the <strings.h> header file. */ #define HAVE_STRINGS_H 1 /* Define to 1 if you have the <string.h> header file. */ #define HAVE_STRING_H 1 /* Define to 1 if you have the `strsep' function. */ #define HAVE_STRSEP 1 /* Define to 1 if you have the <sysfs/libsysfs.h> header file. */ /* #undef HAVE_SYSFS_LIBSYSFS_H */ /* Define to 1 if you have the <sys/stat.h> header file. */ #define HAVE_SYS_STAT_H 1 /* Define to 1 if you have the <sys/time.h> header file. */ #define HAVE_SYS_TIME_H 1 /* Define to 1 if you have the <sys/types.h> header file. */ #define HAVE_SYS_TYPES_H 1 /* Define to 1 if you have the <unistd.h> header file. */ #define HAVE_UNISTD_H 1 /* Define to 1 if your C compiler doesn't accept -c and -o together. */ /* #undef NO_MINUS_C_MINUS_O */ /* Name of package */ #define PACKAGE "faad2" /* Define to the address where bug reports for this package should be sent. */ #define PACKAGE_BUGREPORT "" /* Define to the full name of this package. */ #define PACKAGE_NAME "" /* Define to the full name and version of this package. */ #define PACKAGE_STRING "" /* Define to the one symbol short name of this package. */ #define PACKAGE_TARNAME "" /* Define to the version of this package. */ #define PACKAGE_VERSION "" /* Define to 1 if you have the ANSI C header files. */ #define STDC_HEADERS 1 /* Define to 1 if you can safely include both <sys/time.h> and <time.h>. */ #define TIME_WITH_SYS_TIME 1 /* Version number of package */ #define VERSION "2.7.0" /* Define to 1 if your processor stores words with the most significant byte first (like Motorola and SPARC, unlike Intel and VAX). */ /* #undef WORDS_BIGENDIAN */ /* Define to `__inline__' or `__inline' if that's what the C compiler calls it, or to nothing if 'inline' is not supported under any name. */ #ifndef __cplusplus /* #undef inline */ #endif /* Define to `long int' if <sys/types.h> does not define. */ /* #undef off_t */
3、编写Android.mk
LOCAL_PATH := $(call my-dir) include $(CLEAR_VARS) LOCAL_MODULE:= faad LOCAL_ARM_MODE := arm LOCAL_C_INCLUDES := $(LOCAL_PATH) $(LOCAL_PATH)/include $(LOCAL_PATH)/libfaad $(LOCAL_PATH)/common/mp4ff $(LOCAL_PATH)/libfaad/codebook LOCAL_SRC_FILES := libfaad/bits.c libfaad/cfft.c libfaad/decoder.c libfaad/drc.c libfaad/drm_dec.c libfaad/error.c libfaad/filtbank.c libfaad/ic_predict.c libfaad/is.c libfaad/lt_predict.c libfaad/mdct.c libfaad/mp4.c libfaad/ms.c libfaad/output.c libfaad/pns.c libfaad/ps_dec.c libfaad/ps_syntax.c libfaad/pulse.c libfaad/specrec.c libfaad/syntax.c libfaad/tns.c libfaad/hcr.c libfaad/huffman.c libfaad/rvlc.c libfaad/ssr.c libfaad/ssr_fb.c libfaad/ssr_ipqf.c libfaad/common.c libfaad/sbr_dct.c libfaad/sbr_e_nf.c libfaad/sbr_fbt.c libfaad/sbr_hfadj.c libfaad/sbr_hfgen.c libfaad/sbr_huff.c libfaad/sbr_qmf.c libfaad/sbr_syntax.c libfaad/sbr_tf_grid.c libfaad/sbr_dec.c common/mp4ff/mp4atom.c common/mp4ff/mp4ff.c common/mp4ff/mp4meta.c common/mp4ff/mp4sample.c common/mp4ff/mp4tagupdate.c common/mp4ff/mp4util.c com_iflytek_codec_aac_FaadAACNativeDecoder.c LOCAL_CFLAGS:= -DHAVE_CONFIG_H LOCAL_LDLIBS := -llog include $(BUILD_SHARED_LIBRARY)
4、编译。
5、定点化:
上面编译的是浮点的,可以编译成定点的,方法是把faad/libfaad/common.h中的两个宏打开:
#define FIXED_POINT #define BIG_IQ_TABLE
然后冲洗编译,在我的手机上,使用定点,可以快5倍。
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