Question

使用本指南http://www.roman10.net/how-to-build-ffmpeg-with-ndk-r9/，我成功使用Android NDK 10编译了ffmpeg-2.4.2，但现在我在我的eclipse项目中使用它时遇到了问题。

我得到的错误：

*** Android NDK: Aborting    .  Stop.

在prebuilt-library.mk中指向了这个：

ifndef prebuilt
$(call __ndk_info,ERROR:$(LOCAL_MAKEFILE):$(LOCAL_MODULE): LOCAL_SRC_FILES points to a missing file)
$(call __ndk_info,Check that $(prebuilt_path) exists, or that its path is correct)
$(call __ndk_error,Aborting) <----- ***** This line is specifically pointed out by the error log
endif

这是我的...... jni / Android.mk：

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

LOCAL_MODULE    := VideoTest
LOCAL_SRC_FILES := videotest.c
LOCAL_LDLIBS := -llog -ljnigraphics -lz -landroid
LOCAL_SHARED_LIBRARIES := libavformat libavcodec libswscale libavutil

include $(BUILD_SHARED_LIBRARY)
$(call import-module,ffmpeg-2.4.2/android/arm)

这是我的android-ndk / sources / ffmpeg-2.4.2 / android / arm / Android.mk：

LOCAL_PATH:= $(call my-dir)


include $(CLEAR_VARS)
LOCAL_MODULE:= libavcodec
LOCAL_SRC_FILES:= lib/libavcodec-55.so
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
include $(PREBUILT_SHARED_LIBRARY)

include $(CLEAR_VARS)
LOCAL_MODULE:= libavformat
LOCAL_SRC_FILES:= lib/libavformat-55.so
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
include $(PREBUILT_SHARED_LIBRARY)

include $(CLEAR_VARS)
LOCAL_MODULE:= libswscale
LOCAL_SRC_FILES:= lib/libswscale-2.so
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
include $(PREBUILT_SHARED_LIBRARY)

include $(CLEAR_VARS)
LOCAL_MODULE:= libavutil
LOCAL_SRC_FILES:= lib/libavutil-52.so
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
include $(PREBUILT_SHARED_LIBRARY)

include $(CLEAR_VARS)
LOCAL_MODULE:= libavfilter
LOCAL_SRC_FILES:= lib/libavfilter-3.so
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
include $(PREBUILT_SHARED_LIBRARY)

include $(CLEAR_VARS)
LOCAL_MODULE:= libwsresample
LOCAL_SRC_FILES:= lib/libswresample-0.so
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
include $(PREBUILT_SHARED_LIBRARY)

这是我的项目结构：

http://imgur.com/2vMryOS

所以在我看来，该项目并没有建立，因为LOCAL_SRC_FILES并没有指向任何东西，但是它指的是jni / Android.mk中的LOCAL_SRC_FILES或... ffmpeg-中的那个2.4.2 /安卓/ ARM / Android.mk？无论哪种方式，似乎他们实际上指的是某种东西。我也尝试过这个解决方案Android NDK: Aborting stop?，但我很难理解它。哪个Android.mk文件需要更改？

Answer 1

ffmpeg 2.4.2使用更新的库：

libavcodec-56.so， libavformat-56.so， libswscale-3.so， libavutil-54.so， libavfilter-5.so， libswresample-1.so

更新：而且我认为你在android-ndk / sources / ffmpeg-2.4.2 / android / arm / Android.mk中输入了一个拼写错误。从结尾开始的第4行 - 它应该是LOCAL_MODULE:= libswresample

Answer 2

您的项目结构和构建命令对我来说似乎很好。我建议尝试一些要点： 1.尝试在jni中添加Application.mk文件。 2.尝试使用linux ndk在linux环境中构建VideoTest.so，并使用较低且稳定版本的ndk。

Android NDK w / ffmpeg库 - 错误运行项目

2 个答案: