[Libav-user] Error when creating .so file using .c program and ffmpeg using android NDK

[prathap]

Ok, thhank you..........


On Fri, May 31, 2013 at 11:15 AM, Alex Cohn [via libav-users] <
ml-node+s943685n4657774h40 at n4.nabble.com> wrote:

> On May 30, 2013 9:36 PM, "prathap" <[hidden email]<http://user/SendEmail.jtp?type=node&node=4657774&i=0>>
> wrote:
> >
> > Hi everybody
> >
> > when i am trying to create .so file using .c file and ffmpeg and android
> NDK
> > i got this errors
> >
> >
> > Install        : libmylib.so => libs/armeabi-v7a/libmylib.so
> > Install        : libmylib.so => libs/armeabi/libmylib.so
> > Compile x86    : mylib <= mylib.c
> > cc1: error: unrecognized command line option '-mfloat-abi=softfp'
> > cc1: error: unrecognized command line option '-mfpu=neon'
> > jni/mylib.c:1:0: error: bad value (armv7-a) for -march= switch
> > make: *** [obj/local/x86/objs/mylib/mylib.o] Error 1
> >
> >
> ----------------------------------------------------------------------------------------------------------------------
> >
> >
> > My android.mk file is
> >
> > LOCAL_PATH := $(call my-dir)
> >
> > include $(CLEAR_VARS)
> >
> > LOCAL_LDLIBS =
> -L$(NDK_PLATFORMS_ROOT)/$(TARGET_PLATFORM)/arch-arm/usr/lib
> > -L$(LOCAL_PATH)/../obj/local/armeabi/ -lavformat -lavcodec -lpostproc
> > -lswscale -lavutil -llog -ljnigraphics -lz -ldl -lgcc
> > LOCAL_C_INCLUDES += $(LOCAL_PATH)/ffmpeg
> > LOCAL_SRC_FILES := mylib.c
> > LOCAL_CFLAGS := -march=armv7-a -mfloat-abi=softfp -mfpu=neon
> > LOCAL_MODULE := mylib
> > #LOCAL_SRC_FILES := mylib.c
> >
> > include $(BUILD_SHARED_LIBRARY)
> >
> > LOCAL_PATH := $(call my-dir)
> > LOCAL_C_INCLUDES += $(LOCAL_PATH)/ffmpeg
> > include $(all-subdir-makefiles)
> >
> >
> -----------------------------------------------------------------------------------------------------------------------
> >
> >
> > My .c program is like this
> >
> >
> > #include <jni.h>
> > #include <android/log.h>
> > #include <com_myffmpegtest_MainActivity.h>
> >
> > #include <libavcodec/avcodec.h>
> > #include <libavformat/avformat.h>
> > #include <libavformat/avio.h>
> > #include <libswscale/swscale.h>
> > #include <libavutil/avstring.h>
> >
> > #define LOG_TAG "mylib"
> > #define LOGI(...)  __android_log_print(ANDROID_LOG_INFO, LOG_TAG,
> > __VA_ARGS__)
> > #define LOGE(...)  __android_log_print(ANDROID_LOG_ERROR, LOG_TAG,
> > __VA_ARGS__)
> >
> > JNIEXPORT jint JNICALL Java_com_myffmpegtest_MainActivity_logFileInfo
> > (JNIEnv *env, jclass this, jstring filename)
> > {
> >     av_register_all();
> >
> >     AVFormatContext *pFormatCtx;
> >     const jbyte *str;
> >     str = (*env)->GetStringUTFChars(env, filename, NULL);
> >
> >     if(avformat_open_input(&pFormatCtx, str, NULL, NULL)!=0)
> >     {
> >         LOGE("Can't open file '%s'\n", str);
> >         return 1;
> >     }
> >     else
> >     {
> >         LOGI("File was opened\n");
> >         LOGI("File '%s', Codec %s",
> >            pFormatCtx->filename,
> >             pFormatCtx->iformat->name
> >         );
> >     }
> >     return 0;
> > }
> >
> >
> -------------------------------------------------------------------------------------------------------------------
> >
> >
> > Thanks for you suggestions
> >
> > Regards
> > Prathap.M
>
> You set compiler options for ARM processor. In your ndk-build command, add
> APP_ABI=armeabi-v7a. If you really need x86 version, specify the relevant
> compilation options separately.
>
> BR,
> Alex Cohn
>
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