转载自huntking:Android NDK r8b 和 FFmpeg 0.11.2 移植

这篇文章是转载自开源中国，作者huntking

今天找了很久，其他的博客有的是太旧了，要求NDK降级之r5,有的又出现问题，没有解决方案，良久才发现这篇文章按照步骤，终于生成了libffmpeg.so，转载过来，希望帮到更多的人

原文地址：http://my.oschina.net/wangqin/blog/80345

Android NDK r8b和FFmpeg 0.11.2移植

 

1、 准备Ubuntu 12.04虚拟机，推荐使用VirtualBox

2、 Ubuntu中安装相应的编译开发软件，如：build-essential之类的东西

3、 下载Android NDK r8b和Android SDK, all for linux，注意这个文档中使用的是Android NDK r8b和Android SDK 20

4、 下载FFmpeg，这个文档中使用的是：FFmpeg 0.11.2版本

5、 详细编译步骤：

5.1、创建工作目录：当前目录为：~/

（1）、

1 mkdir lpayer

（2）、

1 mkdir jni

5.2、进入目录jni，当前目录为：~/lplayer/jni，解压ffmpeg源码包

（1）、

1 tar zxvf filename

（2）、解压后，重命名ffmpeg源码文件为：

1 mv ffmpeg_original ffmpeg

（3）、得到目录为：~/lpayer/jni/ffmpeg

5.3、创建相应NDK配置文件：

（1）~/lplayer/jni/Android.mk

1 include $(all-subdir-makefiles)

（2）~/lplayer/jni/ffmpeg/Android.mk

01 LOCAL_PATH := $(call my-dir)
02
03 include $(CLEAR_VARS)
04
05 LOCAL_WHOLE_STATIC_LIBRARIES := libavformat libavcodec libavutil libpostproc libswscale
06
07 LOCAL_MODULE := ffmpeg
08
09 include $(BUILD_SHARED_LIBRARY)
10
11 include $(call all-makefiles-under,$(LOCAL_PATH))

（3）~/lplayer/jni/ffmpeg/av.mk

01 # LOCAL_PATH is one of libavutil, libavcodec, libavformat, or libswscale
02
03 #include $(LOCAL_PATH)/../config-$(TARGET_ARCH).mak
04
05 include $(LOCAL_PATH)/../config.mak
06
07 OBJS :=
08
09 OBJS-yes :=
10
11 MMX-OBJS-yes :=
12
13 include $(LOCAL_PATH)/Makefile
14
15 # collect objects
16
17 OBJS-$(HAVE_MMX) += $(MMX-OBJS-yes)
18
19 OBJS += $(OBJS-yes)
20
21 FFNAME := lib$(NAME)
22
23 FFLIBS := $(foreach,NAME,$(FFLIBS),lib$(NAME))
24
25 FFCFLAGS  = -DHAVE_AV_CONFIG_H -Wno-sign-compare -Wno-switch -Wno-pointer-sign
26
27 FFCFLAGS += -DTARGET_CONFIG=\"config-$(TARGET_ARCH).h\"
28
29 ALL_S_FILES := $(wildcard $(LOCAL_PATH)/$(TARGET_ARCH)/*.S)
30
31 ALL_S_FILES := $(addprefix $(TARGET_ARCH)/, $(notdir $(ALL_S_FILES)))
32
33 ifneq ($(ALL_S_FILES),)
34
35 ALL_S_OBJS := $(patsubst %.S,%.o,$(ALL_S_FILES))
36
37 C_OBJS := $(filter-out $(ALL_S_OBJS),$(OBJS))
38
39 S_OBJS := $(filter $(ALL_S_OBJS),$(OBJS))
40
41 else
42
43 C_OBJS := $(OBJS)
44
45 S_OBJS :=
46
47 endif
48
49 C_FILES := $(patsubst %.o,%.c,$(C_OBJS))
50
51 S_FILES := $(patsubst %.o,%.S,$(S_OBJS))
52
53 FFFILES := $(sort $(S_FILES)) $(sort $(C_FILES))

（4）~/lplayer/jni/ffmpeg/libavcodec/Android.mk

01 LOCAL_PATH := $(call my-dir)
02
03 include $(CLEAR_VARS)
04
05 include $(LOCAL_PATH)/../av.mk
06
07 LOCAL_SRC_FILES := $(FFFILES)
08
09 LOCAL_C_INCLUDES :=        \
10
11     $(LOCAL_PATH)        \
12
13     $(LOCAL_PATH)/..
14
15 LOCAL_CFLAGS += $(FFCFLAGS)
16
17 LOCAL_LDLIBS := -lz
18
19 LOCAL_STATIC_LIBRARIES := $(FFLIBS)
20
21 LOCAL_MODULE := $(FFNAME)
22
23 include $(BUILD_STATIC_LIBRARY)

（5）~/lplayer/jni/ffmpeg/libavformat/Android.mk

01 LOCAL_PATH := $(call my-dir)
02
03 include $(CLEAR_VARS)
04
05 include $(LOCAL_PATH)/../av.mk
06
07 LOCAL_SRC_FILES := $(FFFILES)
08
09 LOCAL_C_INCLUDES :=        \
10
11     $(LOCAL_PATH)        \
12
13     $(LOCAL_PATH)/..
14
15 LOCAL_CFLAGS += $(FFCFLAGS)
16
17 LOCAL_CFLAGS += -include "string.h" -Dipv6mr_interface=ipv6mr_ifindex
18
19 LOCAL_LDLIBS := -lz
20
21 LOCAL_STATIC_LIBRARIES := $(FFLIBS)
22
23 LOCAL_MODULE := $(FFNAME)
24
25 include $(BUILD_STATIC_LIBRARY)

（6）~/lplayer/jni/ffmpeg/libavfilter/Android.mk

01 LOCAL_PATH := $(call my-dir)
02
03 include $(CLEAR_VARS)
04
05 include $(LOCAL_PATH)/../av.mk
06
07 LOCAL_SRC_FILES := $(FFFILES)
08
09 LOCAL_C_INCLUDES :=        \
10
11     $(LOCAL_PATH)        \
12
13     $(LOCAL_PATH)/..
14
15 LOCAL_CFLAGS += $(FFCFLAGS)
16
17 LOCAL_STATIC_LIBRARIES := $(FFLIBS)
18
19 LOCAL_MODULE := $(FFNAME)
20
21 include $(BUILD_STATIC_LIBRARY)

（7）~/lplayer/jni/ffmpeg/libavutil/Android.mk

01 LOCAL_PATH := $(call my-dir)
02
03 include $(CLEAR_VARS)
04
05 include $(LOCAL_PATH)/../av.mk
06
07 LOCAL_SRC_FILES := $(FFFILES)
08
09 LOCAL_C_INCLUDES :=        \
10
11     $(LOCAL_PATH)        \
12
13     $(LOCAL_PATH)/..
14
15 LOCAL_CFLAGS += $(FFCFLAGS)
16
17 LOCAL_STATIC_LIBRARIES := $(FFLIBS)
18
19 LOCAL_MODULE := $(FFNAME)
20
21 include $(BUILD_STATIC_LIBRARY)

（8）、~/lplayer/jni/ffmpeg/libpostproc/Android.mk

01 LOCAL_PATH := $(call my-dir)
02
03 include $(CLEAR_VARS)
04
05 include $(LOCAL_PATH)/../av.mk
06
07 LOCAL_SRC_FILES := $(FFFILES)
08
09 LOCAL_C_INCLUDES :=        \
10
11     $(LOCAL_PATH)        \
12
13     $(LOCAL_PATH)/..
14
15 LOCAL_CFLAGS += $(FFCFLAGS)
16
17 LOCAL_STATIC_LIBRARIES := $(FFLIBS)
18
19 LOCAL_MODULE := $(FFNAME)
20
21 include $(BUILD_STATIC_LIBRARY)

    （9）、~/lplayer/jni/ffmpeg/libswscale/Android.mk

01 LOCAL_PATH := $(call my-dir)
02
03 include $(CLEAR_VARS)
04
05 include $(LOCAL_PATH)/../av.mk
06
07 LOCAL_SRC_FILES := $(FFFILES)
08
09 LOCAL_C_INCLUDES :=        \
10
11     $(LOCAL_PATH)        \
12
13     $(LOCAL_PATH)/..
14
15 LOCAL_CFLAGS += $(FFCFLAGS)
16
17 LOCAL_STATIC_LIBRARIES := $(FFLIBS)
18
19 LOCAL_MODULE := $(FFNAME)
20
21 include $(BUILD_STATIC_LIBRARY)

5.4、配置ffmpeg

（1）编写配置脚本：~/lpayer/jni/ffmpeg/config.sh

注意其中的NDK路径，请修改成你系统中对应的安装路径

01 #!/bin/bash
02
03
04
05 PREBUILT=/home/long/androiddev/android-ndk-r8b/toolchains/arm-linux-androideabi-4.4.3/prebuilt/linux-x86
06
07 PLATFORM=/home/long/androiddev/android-ndk-r8b/platforms/android-9/arch-arm
08
09
10
11 ./configure --target-os=linux \
12
13          --arch=arm \
14
15          --enable-version3 \
16
17          --enable-gpl \
18
19          --enable-nonfree \
20
21          --disable-stripping \
22
23          --disable-ffmpeg \
24
25          --disable-ffplay \
26
27          --disable-ffserver \
28
29          --disable-ffprobe \
30
31          --disable-encoders \
32
33          --disable-muxers \
34
35          --disable-devices \
36
37          --disable-protocols \
38
39          --enable-protocol=file \
40