Mac OS下为Android Studio编译FFmpeg解码库的详细教程

SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'

SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
SLIB_INSTALL_LINKS='$(SLIBNAME)'

#!/bin/bash
NDK=/usr/local/android-ndk-r10d
SYSROOT=$NDK/platforms/android-15/arch-arm/
TOOLCHAIN=$NDK/toolchains/arm-linux-androideabi-4.9/prebuilt/darwin-x86_64
function build_one
{
./configure \
 --prefix=$PREFIX \
 --enable-shared \
 --disable-static \
 --disable-doc \
 --disable-ffmpeg \
 --disable-ffplay \
 --disable-ffprobe \
 --disable-ffserver \
 --disable-avdevice \
 --disable-doc \
 --disable-symver \
 --cross-prefix=$TOOLCHAIN/bin/arm-linux-androideabi- \
 --target-os=linux \
 --arch=arm \
 --enable-cross-compile \
 --sysroot=$SYSROOT \
 --extra-cflags="-Os -fpic $ADDI_CFLAGS" \
 --extra-ldflags="$ADDI_LDFLAGS" \
 $ADDITIONAL_CONFIGURE_FLAG
make clean
make
make install
}
CPU=arm
PREFIX=$(pwd)/android/$CPU 
ADDI_CFLAGS="-marm"
build_one

sudo chmod +x build_android.sh
./build_android.sh

[cg@local]# ls -R android/

arm
 
android//arm:
Android.mk include lib
 
android//arm/include:
libavcodec libavfilter libavformat libavutil  libswresample libswscale
 
android//arm/include/libavcodec:
avcodec.h  avfft.h   dv_profile.h dxva2.h   old_codec_ids.h vaapi.h   vda.h   vdpau.h   version.h  vorbis_parser.h xvmc.h
 
android//arm/include/libavfilter:
asrc_abuffer.h avcodec.h  avfilter.h  avfiltergraph.h buffersink.h buffersrc.h  version.h
 
android//arm/include/libavformat:
avformat.h avio.h  version.h
 
android//arm/include/libavutil:
adler32.h  avstring.h  cast5.h   downmix_info.h hash.h   macros.h   opt.h   replaygain.h  time.h
aes.h   avutil.h   channel_layout.h error.h   hmac.h   mathematics.h parseutils.h  ripemd.h   timecode.h
attributes.h  base64.h   common.h   eval.h   imgutils.h  md5.h   pixdesc.h  samplefmt.h  timestamp.h
audio_fifo.h  blowfish.h  cpu.h   ffversion.h  intfloat.h  mem.h   pixelutils.h  sha.h   version.h
audioconvert.h bprint.h   crc.h   fifo.h   intreadwrite.h motion_vector.h pixfmt.h   sha512.h   xtea.h
avassert.h  bswap.h   dict.h   file.h   lfg.h   murmur3.h  random_seed.h stereo3d.h
avconfig.h  buffer.h   display.h  frame.h   log.h   old_pix_fmts.h rational.h  threadmessage.h
 
android//arm/include/libswresample:
swresample.h version.h
 
android//arm/include/libswscale:
swscale.h version.h
 
android//arm/lib:
libavcodec-56.so libavfilter-5.so libavformat-56.so libavutil-54.so libswresample-1.so libswscale-3.so pkgconfig
libavcodec.so  libavfilter.so  libavformat.so  libavutil.so  libswresample.so libswscale.so
 
android//arm/lib/pkgconfig:
libavcodec.pc libavfilter.pc libavformat.pc libavutil.pc  libswresample.pc libswscale.pc

LOCAL_PATH:= $(call my-dir)
 
 include $(CLEAR_VARS)
LOCAL_MODULE:= libavcodec
LOCAL_SRC_FILES:= lib/libavcodec-56.so
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
include $(PREBUILT_SHARED_LIBRARY)
 
 include $(CLEAR_VARS)
LOCAL_MODULE:= libavformat
LOCAL_SRC_FILES:= lib/libavformat-56.so
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
include $(PREBUILT_SHARED_LIBRARY)
 
 include $(CLEAR_VARS)
LOCAL_MODULE:= libswscale
LOCAL_SRC_FILES:= lib/libswscale-3.so
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
include $(PREBUILT_SHARED_LIBRARY)
 
 include $(CLEAR_VARS)
LOCAL_MODULE:= libavutil
LOCAL_SRC_FILES:= lib/libavutil-54.so
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
include $(PREBUILT_SHARED_LIBRARY)
 
 include $(CLEAR_VARS)
LOCAL_MODULE:= libavfilter
LOCAL_SRC_FILES:= lib/libavfilter-5.so
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
include $(PREBUILT_SHARED_LIBRARY)
 
 include $(CLEAR_VARS)
LOCAL_MODULE:= libswresample
LOCAL_SRC_FILES:= lib/libswresample-1.so
LOCAL_EXPORT_C_INCLUDES := $(LOCAL_PATH)/include
include $(PREBUILT_SHARED_LIBRARY)

sdk.dir=/usr/local/bin/android-sdk-macosx

sdk.dir=/usr/local/bin/android-sdk-macosx
ndk.dir=/usr/local/bin/android-ndk-r10d

sourceSets.main.jni.srcDirs = []

  ndk {
   abiFilter "armeabi"
   moduleName "ovsplayer"
   ldLibs "log", "z", "m", "jnigraphics", "android"
  }

android {
 compileSdkVersion 21
 buildToolsVersion "21.1.1"
 
 sourceSets.main.jni.srcDirs = [] // 禁用自动执行ndk-build
 defaultConfig {
  applicationId "com.example.chengang.myapplication"
  minSdkVersion 15
  targetSdkVersion 21
  versionCode 1
  versionName "1.0"
  ndk {
   abiFilter "armeabi"
   moduleName "ovsplayer" // 这个是C文件的名字
   ldLibs "log", "z", "m", "jnigraphics", "android"
  }
 }
 buildTypes {
  release {
   minifyEnabled false
   proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
  }
 }
}

#include <stdio.h>
#include <stdlib.h>
 
#include "com_example_chengang_myapplication_MainActivity.h"
#include "libavutil/avutil.h"
#include "libavcodec/avcodec.h"
#include "libavformat/avformat.h"
 
 
JNIEXPORT jstring JNICALL Java_com_example_chengang_myapplication_MainActivity_getStringFromNative
 (JNIEnv * env , jobject obj)
 {
  const char *url = "/mnt/sdcard/1.mp4";
  av_register_all();
 
  AVFormatContext *pFormatCtx = NULL;
  int ret = avformat_open_input(&pFormatCtx, url, NULL, NULL);
 
  ret = avformat_find_stream_info(input_context, NULL);
  int streamNum = input_context->nb_streams;
 
  char wd[512];
  sprintf(wd, "AVCODEC VERSION %u\n, streamNum[%d]"
    , avcodec_version()
    , streamNum
    );
  return (*env)->NewStringUTF(env, wd);
 }

package com.example.chengang.myapplication;
 
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.TextView;
 
 
public class MainActivity extends ActionBarActivity {
 
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
 
  TextView view = (TextView) findViewById(R.id.mytext);
  view.setText(this.getStringFromNative());
 }
 
 
 @Override
 public boolean onCreateOptionsMenu(Menu menu) {
  // Inflate the menu; this adds items to the action bar if it is present.
  getMenuInflater().inflate(R.menu.menu_main, menu);
  return true;
 }
 
 @Override
 public boolean onOptionsItemSelected(MenuItem item) {
  // Handle action bar item clicks here. The action bar will
  // automatically handle clicks on the Home/Up button, so long
  // as you specify a parent activity in AndroidManifest.xml.
  int id = item.getItemId();
 
  //noinspection SimplifiableIfStatement
  if (id == R.id.action_settings) {
   return true;
  }
 
  return super.onOptionsItemSelected(item);
 }
 
 public native String getStringFromNative();
 static {
  System.loadLibrary("swresample-1");
  System.loadLibrary("avutil-54");
  System.loadLibrary("avformat-56");
  System.loadLibrary("avcodec-56");
  System.loadLibrary("swscale-3");
  System.loadLibrary("ovsplayer");
 }
}

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
 android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
 android:paddingRight="@dimen/activity_horizontal_margin"
 android:paddingTop="@dimen/activity_vertical_margin"
 android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">
 
 <TextView
  android:id="@+id/mytext"
  android:text="@string/hello_world" android:layout_width="wrap_content"
  android:layout_height="wrap_content" />
 
</RelativeLayout>

LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
 
LOCAL_MODULE := ovsplayer
LOCAL_LDLIBS := \
 -lm \
 -ljnigraphics \
 -landroid \
 -llog \
 -lz \
 
LOCAL_SHARED_LIBRARIES := libavformat libavcodec libswscale libavutil
 
LOCAL_SRC_FILES := \
 /Users/chengang/Code/Android/MyApplication4/app/src/main/jni/ovsplayer.c \
 
LOCAL_C_INCLUDES += /Users/chengang/Code/Android/MyApplication4/app/src/main/jni
LOCAL_C_INCLUDES += /Users/chengang/Code/Android/MyApplication4/app/src/debug/jni
 
include $(BUILD_SHARED_LIBRARY)
$(call import-module,ffmpeg-2.5.3/android/arm)