Linux系統下編譯mp4v2生成Android下使用的So文件
一、需求背景
之前一直用到了mp4v2這個庫，使用庫進行MP4的文件錄製，一直使用 的是armeabi類型的so文件,後來由於AS的更新，將不再支持armeabi格式的so文件，所以才需要編譯不同類型的so文件以支持項目的健壯性。而且armeabi-v7a的兼容性更好。
二、在Ubuntu下安裝ndk環境
Android NDK 安裝配置指南
可以根據安裝指南初步編譯sample工程。
三、編譯mp4v2
通過第一步的sample工程的試手，我們可以知道，如果要編譯工程，先需要編寫對應的.mk文件。
1.android 編譯mp4v2 2.0.0生成動態庫
2.Android平臺的Android.mk和Application.mk
第一個鏈接是百度上面找的，找了很多資料，很多都是參考第一個資料進行編譯的。第二個資料是GITHUB上面的一個開源項目，看起來還不錯，但是第二個作者將整個項目編譯成了許多不同的小包。所以我需要將第一個和第二個進行整合一下。
1). 下載[2]中的項目，調整一下目錄結構,在mp4v2-master目錄下面新建jni目錄，將其他文件都考入jni目錄。
2). 將jni目錄下的Android.mk裏面的內容替換如下
#----------------------------------------------------
# Author: [email protected]
# Time : 2016年 04月 20日 星期三 17:34:45 CST
#----------------------------------------------------
#
# This is an automatically generated file, in order to reduce repetitive work.
# Android.mk: For more details, please see "http://developer.android.com/ndk/guides/android_mk.html".
# Application.mk: For more details, please see "http://developer.android.com/ndk/guides/application_mk.html".
# Can identify the suffix for .c .cc .cpp and .a .so.
LOCAL_PATH := $(call my-dir)
libmp4v2_la_SOURCES := \
src/3gp.cpp \
src/atom_ac3.cpp \
src/atom_amr.cpp \
src/atom_avc1.cpp \
src/atom_avcC.cpp \
src/atom_chpl.cpp \
src/atom_colr.cpp \
src/atom_d263.cpp \
src/atom_dac3.cpp \
src/atom_damr.cpp \
src/atom_dref.cpp \
src/atom_elst.cpp \
src/atom_enca.cpp \
src/atom_encv.cpp \
src/atom_free.cpp \
src/atom_ftyp.cpp \
src/atom_ftab.cpp \
src/atom_gmin.cpp \
src/atom_hdlr.cpp \
src/atom_hinf.cpp \
src/atom_hnti.cpp \
src/atom_href.cpp \
src/atom_mdat.cpp \
src/atom_mdhd.cpp \
src/atom_meta.cpp \
src/atom_mp4s.cpp \
src/atom_mp4v.cpp \
src/atom_mvhd.cpp \
src/atom_nmhd.cpp \
src/atom_ohdr.cpp \
src/atom_pasp.cpp \
src/atom_root.cpp \
src/atom_rtp.cpp \
src/atom_s263.cpp \
src/atom_sdp.cpp \
src/atom_sdtp.cpp \
src/atom_smi.cpp \
src/atom_sound.cpp \
src/atom_standard.cpp \
src/atom_stbl.cpp \
src/atom_stdp.cpp \
src/atom_stsc.cpp \
src/atom_stsd.cpp \
src/atom_stsz.cpp \
src/atom_stz2.cpp \
src/atom_text.cpp \
src/atom_tfhd.cpp \
src/atom_tkhd.cpp \
src/atom_treftype.cpp \
src/atom_trun.cpp \
src/atom_tx3g.cpp \
src/atom_udta.cpp \
src/atom_url.cpp \
src/atom_urn.cpp \
src/atom_uuid.cpp \
src/atom_video.cpp \
src/atom_vmhd.cpp \
src/cmeta.cpp \
src/descriptors.cpp \
src/exception.cpp \
src/enum.tcc \
src/isma.cpp \
src/log.cpp \
src/mp4.cpp \
src/mp4atom.cpp \
src/mp4container.cpp \
src/mp4descriptor.cpp \
src/mp4file.cpp \
src/mp4file_io.cpp \
src/mp4info.cpp \
src/mp4property.cpp \
src/mp4track.cpp \
src/mp4util.cpp \
src/ocidescriptors.cpp \
src/odcommands.cpp \
src/qosqualifiers.cpp \
src/rtphint.cpp \
src/text.cpp \
libmp4v2_la_SOURCES += \
src/bmff/typebmff.cpp \
libmp4v2_la_SOURCES += \
src/itmf/CoverArtBox.cpp \
src/itmf/Tags.cpp \
src/itmf/generic.cpp \
src/itmf/type.cpp \
libmp4v2_la_SOURCES += \
src/qtff/ColorParameterBox.cpp \
src/qtff/PictureAspectRatioBox.cpp \
src/qtff/coding.cpp \
libmp4v2_la_SOURCES += \
libplatform/io/File.cpp \
libplatform/io/FileSystem.cpp \
libplatform/prog/option.cpp \
libplatform/sys/error.cpp \
libplatform/time/time.cpp \
libmp4v2_la_SOURCES += \
libplatform/io/File_posix.cpp \
libplatform/io/FileSystem_posix.cpp \
libplatform/number/random_posix.cpp \
libplatform/process/process_posix.cpp \
libplatform/time/time_posix.cpp
libmp4v2_la_SOURCES += \
libutil/Database.cpp \
libutil/Timecode.cpp \
libutil/TrackModifier.cpp \
libutil/Utility.cpp \
libutil/crc.cpp \
libutil/other.cpp \
include $(CLEAR_VARS)
LOCAL_MODULE := libmp4v2
LOCAL_ARM_MODULE := arm
LOCAL_CFLAGS := -fno-rtti -fexceptions
#LOCAL_EXPORT_CFLAGS := $(LOCAL_CFLAGS)
LOCAL_SRC_FILES := $(libmp4v2_la_SOURCES)
LOCAL_C_INCLUDES := \
$(LOCAL_PATH)/include \
$(LOCAL_PATH)/vstudio9.0/include \
$(LOCAL_PATH)/libutil \
$(LOCAL_PATH)/libutil/include \
$(LOCAL_PATH)/libplatform \
$(LOCAL_PATH)/libplatform/include \
$(LOCAL_PATH)
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_C_INCLUDES)
#LOCAL_SHARED_LIBRARIES := \
# libutils \
# libbinder \
# libcutils
LOCAL_CXXFLAGS :=-fexceptions -Wno-write-strings
LOCAL_CPPFLAGS := -O2 -fexceptions -DHAVE_SOCKLEN_T -DHAVE_STRUCT_IOVEC
LOCAL_MODULE_TAGS := optional
include $(BUILD_SHARED_LIBRARY)
3). 進入到mp4v2-master/jni目錄運行 ndk-build命令即可進行編譯
4). 如果需要編譯全部類型的so文件，只需要將Application.mk文件下面 APP_ABI 修改成all即可。
四、編譯結果
chezi008@master:~/AndroidStudioProjects/mp4v2-master/jni$ ndk-build
Android NDK: WARNING: Unsupported source file extensions in Android.mk for module mp4v2
Android NDK: src/enum.tcc
[armeabi-v7a] Compile++ thumb: mp4v2 <= 3gp.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_ac3.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_amr.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_avc1.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_avcC.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_chpl.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_colr.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_d263.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_dac3.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_damr.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_dref.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_elst.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_enca.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_encv.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_free.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_ftyp.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_ftab.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_gmin.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_hdlr.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_hinf.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_hnti.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_href.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_mdat.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_mdhd.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_meta.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_mp4s.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_mp4v.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_mvhd.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_nmhd.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_ohdr.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_pasp.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_root.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_rtp.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_s263.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_sdp.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_sdtp.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_smi.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_sound.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_standard.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_stbl.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_stdp.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_stsc.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_stsd.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_stsz.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_stz2.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_text.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_tfhd.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_tkhd.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_treftype.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_trun.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_tx3g.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_udta.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_url.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_urn.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_uuid.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_video.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= atom_vmhd.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= cmeta.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= descriptors.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= exception.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= isma.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= log.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= mp4.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= mp4atom.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= mp4container.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= mp4descriptor.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= mp4file.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= mp4file_io.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= mp4info.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= mp4property.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= mp4track.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= mp4util.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= ocidescriptors.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= odcommands.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= qosqualifiers.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= rtphint.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= text.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= typebmff.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= CoverArtBox.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= Tags.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= generic.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= type.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= ColorParameterBox.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= PictureAspectRatioBox.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= coding.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= File.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= FileSystem.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= option.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= error.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= time.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= File_posix.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= FileSystem_posix.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= random_posix.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= process_posix.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= time_posix.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= Database.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= Timecode.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= TrackModifier.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= Utility.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= crc.cpp
[armeabi-v7a] Compile++ thumb: mp4v2 <= other.cpp
[armeabi-v7a] SharedLibrary : libmp4v2.so
[armeabi-v7a] Install : libmp4v2.so => libs/armeabi-v7a/libmp4v2.so
全類型So文件下載
編譯了這麼久，傳上來給大家共享一下都覺得不好意思，因爲ubuntu確實太難搗鼓了，爲了編譯這東西，又是裝LINUX系統，又是學習.mk文件裏面屬性的作用，確實麻煩。
下載地址：https://download.csdn.net/download/chezi008/10412717