ffmpeg移植改接口调用 |

//jni build

------------------------

Jni/Android.mk :

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)
PATH_TO_FFMPEG_SOURCE:=$(LOCAL_PATH)/ffmpeg -L/usr/android-x264/include 
LOCAL_C_INCLUDES += $(PATH_TO_FFMPEG_SOURCE)
LOCAL_LDLIBS := -lffmpeg -llog -ljnigraphics -lz -ldl -lgcc 
LOCAL_MODULE    := hello-jni
LOCAL_SRC_FILES := hello-jni.c 

include $(BUILD_SHARED_LIBRARY)

-------------------------

ffmpeg-jni.c :

//---定义java函数，为了Java中方法调用-----
jstring
Java_com_example_hellojni_HelloJni_FFMpegTasks(JNIEnv * env, jobject this)
{
     LOGI("goto function video_gen()");

     char const *str;
    int a=4;
    char *arg[4];

     arg[0]="ffmpeg";
     arg[1]="-i";
     arg[2]="/sdcard/data/pic.avi";
    arg[3]="/sdcard/data/pic2.avi";//"http://192.168.1.108:8090/feed1.ffm";


    __android_log_print(ANDROID_LOG_INFO, "JNIMsg","============");
    __android_log_print(ANDROID_LOG_INFO, "filePath",arg[2]);

    int ret = video_gen(a,arg);

    str="Using FFMPEG doing your job";
    return (*env)->NewStringUTF(env,str);
}

-------------------------

//---ffmpeg build---

-------------------------------

Android.mk:

LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_WHOLE_STATIC_LIBRARIES := libavformat libavcodec libavutil libpostproc libswscale libavfilter libavdevice
LOCAL_MODULE := ffmpeg
LOCAL_SRC_FILES += cmdutils.c cmdutils.h ffmpeg.c cmdutils_common_opts.h
LOCAL_LDLIBS += -llog
include $(BUILD_SHARED_LIBRARY)
include $(call all-makefiles-under,$(LOCAL_PATH))

----------------

+    config :

---------------------

========================================

x264 build.sh:

export NDK=/usr/Android/android-ndk-r8b
export PREBUILT=$NDK/toolchains/arm-linux-androideabi-4.4.3/prebuilt
export PLATFORM=$NDK/platforms/android-8/arch-arm 
export PREFIX=/usr/android-x264
./configure --prefix=$PREFIX \
--enable-static \
--enable-pic \
--enable-shared \
--disable-asm \
--disable-cli \
--host=arm-linux \
--cross-prefix=$PREBUILT/linux-x86/bin/arm-linux-androideabi- \
--sysroot=$PLATFORM

------------------------------------------

x264-ffmpeg  build:

config:

#!/bin/bash

PREBUILT=/usr/Android/android-ndk-r8b/toolchains/arm-linux-androideabi-4.4.3/prebuilt/linux-x86


PLATFORM=/usr/Android/android-ndk-r8b/platforms/android-9/arch-arm

./configure --target-os=linux \
--arch=arm  \
--enable-version3 \
--enable-gpl \
--enable-nonfree \
--enable-shared \
--enable-stripping \
--enable-ffmpeg \
--disable-ffplay \
--disable-ffserver \
--disable-ffprobe \
--disable-symver \
--enable-encoders \
--enable-decoders \
--enable-libx264 \
--enable-muxers \
--disable-devices \
--enable-protocols \
--enable-protocol=file \
--enable-avfilter \
--enable-network \
--enable-avdevice \
--disable-asm  \
--enable-cross-compile \
--cc=$PREBUILT/bin/arm-linux-androideabi-gcc \
--cross-prefix=$PREBUILT/bin/arm-linux-androideabi- \
--strip=$PREBUILT/bin/arm-linux-androideabi-strip \
--extra-cflags="-fPIC -DANDROID -I/usr/android-x264/include" \
--extra-ldflags="-Wl,-T,$PREBUILT/arm-linux-androideabi/lib/ldscripts/armelf_linux_eabi.x -Wl,-rpath-link=$PLATFORM/usr/lib -L$PLATFORM/usr/lib -nostdlib $PREBUILT/lib/gcc/arm-linux-androideabi/4.4.3/crtbegin.o $PREBUILT/lib/gcc/arm-linux-androideabi/4.4.3/crtend.o -lc -lm -ldl" \

sed -i 's/HAVE_LRINT 0/HAVE_LRINT 1/g' config.h
sed -i 's/HAVE_LRINTF 0/HAVE_LRINTF 1/g' config.h
sed -i 's/HAVE_ROUND 0/HAVE_ROUND 1/g' config.h
sed -i 's/HAVE_ROUNDF 0/HAVE_ROUNDF 1/g' config.h
sed -i 's/HAVE_TRUNC 0/HAVE_TRUNC 1/g' config.h
sed -i 's/HAVE_TRUNCF 0/HAVE_TRUNCF 1/g' config.h
sed -i 's/HAVE_CBRT 0/HAVE_CBRT 1/g' config.h
sed -i 's/HAVE_CBRTF 0/HAVE_CBRTF 1/g' config.h
sed -i 's/HAVE_ISINF 0/HAVE_ISINF 1/g' config.h
sed -i 's/HAVE_ISNAN 0/HAVE_ISNAN 1/g' config.h
sed -i 's/HAVE_SINF 0/HAVE_SINF 1/g' config.h
sed -i 's/HAVE_RINT 0/HAVE_RINT 1/g' config.h

---------------------------------------

android.mk:

LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LOCAL_WHOLE_STATIC_LIBRARIES := libavformat libavcodec libavutil libpostproc libswscale libavfilter libavdevice
LOCAL_MODULE := ffmpeg
LOCAL_SRC_FILES += cmdutils.c cmdutils.h ffmpeg.c cmdutils_common_opts.h
LOCAL_LDLIBS += -llog -L/usr/android-x264/lib -lx264
include $(BUILD_SHARED_LIBRARY)
include $(call all-makefiles-under,$(LOCAL_PATH))

==================

FFMPEG 库添加到platforms ；

源码提供头文件；