项目https://github.com/iiordanov/bVNC使用 gstreamer sdk ( http://docs.gstreamer.com/display/GstSDK/Installing+for+Android+development )。它使用的jpeg库是jpeglib。我想用 libjpeg-turbo 替换 jpeglib 以提高 mjpeg 解码性能。我该怎么做?
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1、我更改了jni/src中的Android.mk文件。下面是修改后的版本。我没有替换gstreamer使用的jpeglib,而是替换了aSPICE使用的jpeglib。我使用的 bVNC 代码是 v3.3.5。
2、编译libjpeg-turbo 1.3.0时,一定要配置--with-jpeg8。
3、下面是修改后的Android.mk:
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
LIB_PATH := $(LOCAL_PATH)/../../libs/armeabi
SPICE_CLIENT_ANDROID_DEPS := $(LOCAL_PATH)/../libs/deps
CROSS_DIR := /opt/android
spice_objs := \
$(SPICE_CLIENT_ANDROID_DEPS)/lib/libssl.a \
$(SPICE_CLIENT_ANDROID_DEPS)/lib/libcrypto.a \
$(CROSS_DIR)/lib/libturbojpeg.a \
$(SPICE_CLIENT_ANDROID_DEPS)/lib/libcelt051.a
LOCAL_MODULE := spice
LOCAL_SRC_FILES := channel-record.c channel-playback.c channel-cursor.c \
spice-cmdline.c coroutine_gthread.c spice-util.c \
spice-session.c spice-channel.c spice-marshal.c spice-glib-enums.c \
common/generated_client_demarshallers.c common/generated_client_demarshallers1.c \
common/generated_client_marshallers.c common/generated_client_marshallers1.c \
gio-coroutine.c channel-base.c channel-main.c spice-proxy.c bio-gsocket.c glib-compat.c \
channel-display.c channel-display-mjpeg.c channel-inputs.c decode-glz.c \
decode-jpeg.c decode-zlib.c wocky-http-proxy.c channel-port.c spice-client.c spice-audio.c \
common/mem.c common/marshaller.c common/canvas_utils.c common/backtrace.c \
common/sw_canvas.c common/pixman_utils.c common/lines.c common/rop3.c common/quic.c \
common/lz.c common/region.c common/ssl_verify.c common/log.c spice-gstaudio.c
LOCAL_LDLIBS += $(spice_objs) \
-ljnigraphics -llog -ldl -lstdc++ -lz -lc \
-malign-double -malign-loops
LOCAL_LDLIBS += -L$(LIB_PATH) -lgstreamer_android
LOCAL_CPPFLAGS += -DG_LOG_DOMAIN=\"GSpice\" \
-DSW_CANVAS_CACHE \
-DSPICE_GTK_LOCALEDIR=\"/usr/local/share/locale\" \
-DHAVE_CONFIG_H -UHAVE_SYS_SHM_H -DSW_CANVAS_CACHE \
-D_REENTRANT -DWITH_GSTAUDIO
LOCAL_C_INCLUDES += $(LOCAL_PATH)/common \
$(SPICE_CLIENT_ANDROID_DEPS)/include
LOCAL_CFLAGS := $(LOCAL_CPPFLAGS) \
-std=gnu99 -Wall -Wno-sign-compare -Wno-deprecated-declarations -Wl,--no-undefined \
-fPIC -DPIC -O3 -funroll-loops -ffast-math
LOCAL_EXPORT_CFLAGS += $(LOCAL_CFLAGS)
LOCAL_EXPORT_LDLIBS += $(LOCAL_LDLIBS)
LOCAL_SHARED_LIBRARIES := gstreamer_android
LOCAL_ARM_MODE := arm
include $(BUILD_STATIC_LIBRARY)
include $(CLEAR_VARS)
LOCAL_MODULE := spice-android
LOCAL_SRC_FILES := android/android-service.c android/android-spicy.c android/android-spice-widget.c \
android/android-io.c
LOCAL_STATIC_LIBRARIES := spice
include $(BUILD_SHARED_LIBRARY)
include $(CLEAR_VARS)
ifndef GSTREAMER_SDK_ROOT
ifndef GSTREAMER_SDK_ROOT_ANDROID
$(error GSTREAMER_SDK_ROOT_ANDROID is not defined!)
endif
GSTREAMER_SDK_ROOT := $(GSTREAMER_SDK_ROOT_ANDROID)
endif
GSTREAMER_NDK_BUILD_PATH := $(GSTREAMER_SDK_ROOT)/share/gst-android/ndk-build/
include $(GSTREAMER_NDK_BUILD_PATH)/plugins.mk
GSTREAMER_PLUGINS := $(GSTREAMER_PLUGINS_CORE) $(GSTREAMER_PLUGINS_SYS)
GSTREAMER_EXTRA_DEPS := glib-2.0 gthread-2.0 pixman-1 gstreamer-app-0.10
include $(GSTREAMER_NDK_BUILD_PATH)/gstreamer.mk
于 2013-11-04T02:11:52.827 回答