NDK编译FreeImage

参考了 以下2篇文章 并作了一小点修改

http://recursify.com/blog/2013/05/25/building-freeimage-for-android

http://blog.sina.com.cn/s/blog_4119bd830100w7ov.html

1. 从官网下载FreeImage 3.15.4 的源码  http://freeimage.sourceforge.net/download.html

2. 新建安卓工程  Add Native Support 

  把FreeImage目录下的Source目录 和 Makefile.srcs复制到jni根目录下 

3. 修改Android.mk为

LOCAL_PATH := $(call my-dir)

include $(LOCAL_PATH)/Makefile.srcs

include $(CLEAR_VARS)
LOCAL_MODULE       := FreeImage
LOCAL_C_INCLUDES   := $(LOCAL_PATH)/Source
                        $(LOCAL_PATH)/Source/Metadata
                        $(LOCAL_PATH)/Source/FreeImageToolkit
                        $(LOCAL_PATH)/Source/LibJPEG
                        $(LOCAL_PATH)/Source/LibPNG
                        $(LOCAL_PATH)/Source/LibTIFF4
                        $(LOCAL_PATH)/Source/ZLib
                        $(LOCAL_PATH)/Source/LibOpenJPEG
                        $(LOCAL_PATH)/Source/OpenEXR
                        $(LOCAL_PATH)/Source/OpenEXR/Half
                        $(LOCAL_PATH)/Source/OpenEXR/Iex
                        $(LOCAL_PATH)/Source/OpenEXR/IlmImf
                        $(LOCAL_PATH)/Source/OpenEXR/IlmThread
                        $(LOCAL_PATH)/Source/OpenEXR/Imath
                        $(LOCAL_PATH)/Source/LibRawLite
                        $(LOCAL_PATH)/Source/LibRawLite/dcraw
                        $(LOCAL_PATH)/Source/LibRawLite/internal
                        $(LOCAL_PATH)/Source/LibRawLite/libraw
                        $(LOCAL_PATH)/Source/LibRawLite/src
LOCAL_SRC_FILES    := $(SRCS)
LOCAL_CPP_FEATURES := rtti exceptions
#LOCAL_CFLAGS       := -O3 -fPIC
include $(BUILD_SHARED_LIBRARY)

4. 修改Application.mk为 全平台编译

APP_STL   := gnustl_static
APP_ABI   := all
APP_OPTIM := release

或者只是ARM的

NDK_TOOLCHAIN_VERSION:=4.8
APP_STL := gnustl_static
APP_CPPFLAGS := -std=c++11
APP_ABI    := armeabi

5. 找到LibTIFF4/tif_config.h 注释掉

//#define HAVE_SEARCH_H 1

6. 由于编译会找不到LibRawLiteinternaldcraw_common.cpp最上面添加swab函数

#include <stdint.h>
#include <asm/byteorder.h>

static void swab(const void *from, void *to, ssize_t n)
{
    ssize_t i;

    if (n < 0)
    {
        return;
    }
    for (i = 0; i < (n / 2) * 2; i += 2)
    {
        *((uint16_t*)to + i) = __arch__swab16(*((uint16_t*)from + i));
    }
}

OpenEXR有点兼容性的小BUG

  解决办法是找到ImfHuf.cpp 修改下头文件包含的顺序

#include <string.h>
#include <cstring>
#include <algorithm>
#include <ImfHuf.h>
#include <ImfInt64.h>
#include <ImfAutoArray.h>
#include "Iex.h"
#include <assert.h>

8. 编译