ijkplayer中使用librtmp(Android)

本文将从零开始详细讲述怎么在ijkplayer中添加使用librtmp库

编译环境:

ubuntu 16.10

1.安装必要的软件

sudo apt-get install git make yasm

2.下载并编译ijkplayer,确保源码无错

git clone https://github.com/Bilibili/ijkplayer.git ijkplayer-android
cd ijkplayer-android
git checkout -B latest k0.7.5
./init-android.shcd android/contrib
./compile-ffmpeg.sh clean
./compile-ffmpeg.sh allcd ..
./compile-ijk.sh all


3.添加openssl支持

cd ../..
./init-android-openssl.sh
./android/contrib/compile-openssl.sh all

编译成功后,在ijkplayer-android/android/contrib/build/目录下会有对应cpu架构的ssl静态库

4.编译librtmp生成对应静态库

cd android/contrib
git clone git://git.ffmpeg.org/rtmpdump
cd rtmpdump

进入rtmpdump目录内,新建4个文件:
Android.mk
AndroidManifest.xml
jni/Application.mk
librtmp/Android.mk

其中Android.mk:

LOCAL_PATH :&＃61; $(call my-dir)subdirs :&＃61; $(addprefix $(LOCAL_PATH)/,$(addsuffix /Android.mk, \librtmp \))ifeq ($(TARGET_ARCH_ABI),armeabi-v7a)
openssl&＃61;openssl-armv7a
endif
ifeq ($(TARGET_ARCH_ABI),armeabi)
openssl&＃61;openssl-armv5
endif
ifeq ($(TARGET_ARCH_ABI),arm64-v8a)
openssl&＃61;openssl-arm64
endif
ifeq ($(TARGET_ARCH_ABI),x86)
openssl&＃61;openssl-x86
endif
ifeq ($(TARGET_ARCH_ABI),x86_64)
openssl&＃61;openssl-x86_64
endif
SSL :&＃61;$(LOCAL_PATH)/../build/$(openssl)/output
ifndef SSL
$(error "You must define SSL before starting")
endifinclude $(subdirs)

AndroidManifest.xml:


<manifest xmlns:android&＃61;"http://schemas.android.com/apk/res/android"android:versionCode&＃61;"1"android:versionName&＃61;"0.1" ><uses-sdk android:minSdkVersion&＃61;"9" />manifest>

jni/Application.mk:

NDK_TOOLCHAIN_VERSION :&＃61; 4.9
APP_ABI :&＃61; armeabi-v7a armeabi arm64-v8a x86 x86_64
APP_PROJECT_PATH :&＃61; $(shell pwd)
APP_BUILD_SCRIPT :&＃61; $(APP_PROJECT_PATH)/Android.mk

librtmp/Android.mk:

LOCAL_PATH:&＃61; $(call my-dir)
include $(CLEAR_VARS)LOCAL_C_INCLUDES &＃43;&＃61; $(NDK_PROJECT_PATH)/librtmp \$(SSL)/includeLOCAL_SRC_FILES:&＃61; \amf.c \hashswf.c \log.c \parseurl.c \rtmp.cLOCAL_CFLAGS &＃43;&＃61; -I$(SSL)/include -DUSE_OPENSSL
LOCAL_LDLIBS &＃43;&＃61; -L$(SSL)/lib
LOCAL_LDLIBS &＃43;&＃61; -lssl -lcrypto -lz
LOCAL_DISABLE_FATAL_LINKER_WARNINGS :&＃61; trueLOCAL_MODULE :&＃61; librtmp#include $(BUILD_SHARED_LIBRARY)
include $(BUILD_STATIC_LIBRARY)

在rtmp目录下执行编译:

ndk-build

成功后会看到目录下多了obj这个文件夹,里面有对应版本的rtmp静态库

5.将librtmp编译到ffmpeg里

A.修改/android/contrib/tools/do-compile-ffmpeg.sh文件
找到

FF_BUILD_ROOT&＃61;&＃96;pwd&＃96;

在其后面添加

RTMP_ROOT&＃61;"$FF_BUILD_ROOT/rtmpdump"
RTMP_ARCH&＃61;

依次在其中添加RTMP_ARCH&＃61;”xxx”

if [ "$FF_ARCH" &＃61; "armv7a" ]; then...RTMP_ARCH&＃61;"armeabi-v7a"elif [ "$FF_ARCH" &＃61; "armv5" ]; then...RTMP_ARCH&＃61;"armeabi"elif [ "$FF_ARCH" &＃61; "x86" ]; then...RTMP_ARCH&＃61;"x86"elif [ "$FF_ARCH" &＃61; "x86_64" ]; then...RTMP_ARCH&＃61;"x86_64"elif [ "$FF_ARCH" &＃61; "arm64" ]; then...RTMP_ARCH&＃61;"arm64-v8a"elseecho "unknown architecture $FF_ARCH";exit 1
fi

//找到
FF_CFLAGS&＃61;"-O3 -Wall -pipe \-std&＃61;c99 \-ffast-math \-fstrict-aliasing -Werror&＃61;strict-aliasing \-Wno-psabi -Wa,--noexecstack \-DANDROID -DNDEBUG"
//在其后面添加
FF_CFG_FLAGS&＃61;"$FF_CFG_FLAGS --enable-protocol&＃61;librtmp*"
FF_CFG_FLAGS&＃61;"$FF_CFG_FLAGS --enable-librtmp"
FF_CFLAGS&＃61;"$FF_CFLAGS -I${RTMP_ROOT}"
FF_DEP_LIBS&＃61;"-L${RTMP_ROOT}/obj/local/${RTMP_ARCH} -lrtmp"

B.分别在下面的文件中
/android/contrib/ffmpeg-arm64/configure
/android/contrib/ffmpeg-armv5/configure
/android/contrib/ffmpeg-armv7a/configure
/android/contrib/ffmpeg-x86/configure
/android/contrib/ffmpeg-x86_64/configure
找到并注释掉这行

#enabled librtmp && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket

C.在/config/module-lite.sh里面查找或插入下面2个值

export COMMON_FF_CFG_FLAGS&＃61;"$COMMON_FF_CFG_FLAGS --enable-protocol&＃61;librtmp*"
export COMMON_FF_CFG_FLAGS&＃61;"$COMMON_FF_CFG_FLAGS --enable-librtmp"

6.最后编译

cd android/contrib
./compile-ffmpeg.sh clean
./compile-ffmpeg.sh all
cd ..
./compile-ijk.sh all

这是编译ijk所支持的全部cpu架构的例子,只编译其中一个的话,按需修改一下就ok了

参考文章:

http://blog.csdn.net/lyqaizhy/article/details/49077027
http://zhengxiaoyong.me/2016/11/13/%E5%88%9D%E8%AF%86FFmpeg%E7%BC%96%E8%AF%91%E9%82%A3%E4%BA%9B%E4%BA%8B
http://zhengxiaoyong.me/2016/11/20/%E7%AE%80%E8%BF%B0RTMPDump%E4%B8%8E%E7%BC%96%E8%AF%91%E7%A7%BB%E6%A4%8D/
https://github.com/yixia/librtmp