使用Webp libaray的JNI函数中的问题

Question

我正在编写一个使用Webp libaray将位图转换为wepb格式的函数。但是我面临图片中显示的问题，请帮助我。

这是我的android mk文件：

LOCAL_PATH :=' $(call my-dir)'
ORIG_LOCAL_PATH := ' $(LOCAL_PATH) '
include $(CLEAR_VARS)
WEBP_FILES := \
src/dec/alpha.c \
src/dec/buffer.c \
src/dec/frame.c \
src/dec/idec.c \
src/dec/io.c \
src/dec/layer.c \
src/dec/quant.c \
src/dec/tree.c \
src/dec/vp8.c \
src/dec/vp8l.c \
src/dec/webp.c \
src/dsp/cpu.c \
src/dsp/dec.c \
src/dsp/dec_sse2.c \
src/dsp/lossless.c \
src/dsp/upsampling.c \
src/dsp/upsampling_sse2.c \
src/dsp/yuv.c \
src/utils/bit_reader.c \
src/utils/bit_writer.c \
src/utils/color_cache.c \
src/utils/filters.c \
src/utils/huffman.c \
src/utils/huffman_encode.c \
src/utils/quant_levels.c \
src/utils/quant_levels_dec.c \
src/utils/rescaler.c \
src/utils/thread.c \
src/utils/utils.c \

LOCAL_MODULE    := webp_evme
LOCAL_SRC_FILES += webp.c
LOCAL_SRC_FILES += encodeicon.c


LOCAL_C_INCLUDES += $(LOCAL_PATH)/src $(LOCAL_PATH)/libwebp/src

ifeq ($(TARGET_ARCH_ABI),armeabi-v7a)

WEBP_FILES += src/dsp/dec_neon.c.neon
WEBP_FILES += src/dsp/upsampling_neon.c.neon
endif

LOCAL_SRC_FILES += $(WEBP_FILES:%=libwebp/%)
LOCAL_SRC_FILES += swig_utils.c
LOCAL_LDLIBS := -llog
LOCAL_STATIC_LIBRARIES := cpufeatures

include $(BUILD_SHARED_LIBRARY)

$(call import-module,android/cpufeatures)

LOCAL_LDLIBS := -llog -landroid -lEGL -lGLESv1_CM

我已经工作3天了，但尚未解决，请帮助我解决此问题。预先感谢。