jni部分

alpheus55 · May 4, 2018 · 891935b · 891935b
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diff --git a/app/jnicode/jni/Android.mk b/app/jnicode/jni/Android.mk
@@ -0,0 +1,64 @@
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+LOCAL_MODULE :=  libavutil
+LOCAL_SRC_FILES := prebuilt/libavutil.so
+include $(PREBUILT_SHARED_LIBRARY)
+
+include $(CLEAR_VARS)
+LOCAL_MODULE :=  libswresample
+LOCAL_SRC_FILES := prebuilt/libswresample.so
+include $(PREBUILT_SHARED_LIBRARY)
+
+include $(CLEAR_VARS)
+LOCAL_MODULE :=  libswscale
+LOCAL_SRC_FILES := prebuilt/libswscale.so
+include $(PREBUILT_SHARED_LIBRARY)
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := libavcodec
+LOCAL_SRC_FILES := prebuilt/libavcodec.so
+include $(PREBUILT_SHARED_LIBRARY)
+
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := libavformat
+LOCAL_SRC_FILES := prebuilt/libavformat.so
+include $(PREBUILT_SHARED_LIBRARY)
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := libavfilter
+LOCAL_SRC_FILES := prebuilt/libavfilter.so
+include $(PREBUILT_SHARED_LIBRARY)
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := libavdevice
+LOCAL_SRC_FILES := prebuilt/libavdevice.so
+include $(PREBUILT_SHARED_LIBRARY)
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := libpostproc
+LOCAL_SRC_FILES := prebuilt/libpostproc.so
+include $(PREBUILT_SHARED_LIBRARY)
+
+
+include $(CLEAR_VARS)
+
+LOCAL_ARM_MODE := arm
+LOCAL_MODULE := ffmpeg
+
+
+LOCAL_SRC_FILES := Jni_FFmpegCmd.c\
+                   cmdutils.c \
+                   ffmpeg.c \
+                   ffmpeg_opt.c \
+                   ffmpeg_filter.c \
+                   ffmpeg_thread.c
+
+LOCAL_C_INCLUDES := E:\ijkPlayer\EpMedia\ffmpeg-3.3.4
+
+LOCAL_LDLIBS := -llog -ljnigraphics -lz -landroid -lm -pthread -L$(SYSROOT)/usr/lib -latomic
+LOCAL_SHARED_LIBRARIES := libavcodec libavfilter libavformat libavutil libswresample libswscale libavdevice libpostproc
+LOCAL_CFLAGS := -D__STDC_CONSTANT_MACROS -Wno-sign-compare -Wno-switch -Wno-pointer-sign -DHAVE_NEON=1 -fPIC -DANDROI
+
+include $(BUILD_SHARED_LIBRARY)
diff --git a/app/jnicode/jni/Application.mk b/app/jnicode/jni/Application.mk
@@ -0,0 +1,2 @@
+APP_ABI := armeabi armeabi-v7a
+APP_PLATFORM=android-19
diff --git a/app/jnicode/jni/Jni_FFmpegCmd.c b/app/jnicode/jni/Jni_FFmpegCmd.c
@@ -0,0 +1,115 @@
+#include "Jni_FFmpegCmd.h"
+#include <string.h>
+#include "ffmpeg_thread.h"
+#include "android_log.h"
+#include "cmdutils.h"
+
+static JavaVM *jvm = NULL;
+//java虚拟机
+static jclass m_clazz = NULL;//当前类(面向java)
+
+/**
+ * 回调执行Java方法
+ * 参看 Jni反射+Java反射
+ */
+void callJavaMethod(JNIEnv *env, jclass clazz,int ret) {
+    if (clazz == NULL) {
+        LOGE("---------------clazz isNULL---------------");
+        return;
+    }
+    //获取方法ID (I)V指的是方法签名 通过javap -s -public FFmpegCmd 命令生成
+    jmethodID methodID = (*env)->GetStaticMethodID(env, clazz, "onExecuted", "(I)V");
+    if (methodID == NULL) {
+        LOGE("---------------methodID isNULL---------------");
+        return;
+    }
+    //调用该java方法
+    (*env)->CallStaticVoidMethod(env, clazz, methodID,ret);
+}
+void callJavaMethodProgress(JNIEnv *env, jclass clazz,float ret) {
+    if (clazz == NULL) {
+        LOGE("---------------clazz isNULL---------------");
+        return;
+    }
+    //获取方法ID (I)V指的是方法签名 通过javap -s -public FFmpegCmd 命令生成
+    jmethodID methodID = (*env)->GetStaticMethodID(env, clazz, "onProgress", "(F)V");
+    if (methodID == NULL) {
+        LOGE("---------------methodID isNULL---------------");
+        return;
+    }
+    //调用该java方法
+    (*env)->CallStaticVoidMethod(env, clazz, methodID,ret);
+}
+
+/**
+ * c语言-线程回调
+ */
+static void ffmpeg_callback(int ret) {
+    JNIEnv *env;
+    //附加到当前线程从JVM中取出JNIEnv, C/C++从子线程中直接回到Java里的方法时  必须经过这个步骤
+    (*jvm)->AttachCurrentThread(jvm, (void **) &env, NULL);
+    callJavaMethod(env, m_clazz,ret);
+
+    //完毕-脱离当前线程
+    (*jvm)->DetachCurrentThread(jvm);
+}
+
+void ffmpeg_progress(float progress) {
+    JNIEnv *env;
+    (*jvm)->AttachCurrentThread(jvm, (void **) &env, NULL);
+    callJavaMethodProgress(env, m_clazz,progress);
+    (*jvm)->DetachCurrentThread(jvm);
+}
+
+/*
+ * Class:     JniTest_FFmpegCmd
+ * Method:    exec
+ * Signature: (I[Ljava/lang/String;)I
+ */
+JNIEXPORT jint
+
+JNICALL Java_Jni_FFmpegCmd_exec
+        (JNIEnv *env, jclass clazz, jint cmdnum, jobjectArray cmdline) {
+    //---------------------------------C语言 反射Java 相关----------------------------------------
+    //在jni的c线程中不允许使用共用的env环境变量 但JavaVM在整个jvm中是共用的 可通过保存JavaVM指针,到时候再通过JavaVM指针取出JNIEnv *env;
+    //ICS之前(你可把NDK sdk版本改成低于11) 可以直接写m_clazz = clazz;直接赋值,  然而ICS(sdk11) 后便改变了这一机制,在线程中回调java时 不能直接共用变量 必须使用NewGlobalRef创建全局对象
+    //官方文档正在拼命的解释这一原因,参看:http://android-developers.blogspot.jp/2011/11/jni-local-reference-changes-in-ics.html
+    (*env)->GetJavaVM(env, &jvm);
+    m_clazz = (*env)->NewGlobalRef(env, clazz);
+    //---------------------------------C语言 反射Java 相关----------------------------------------
+    //---------------------------------java 数组转C语言数组----------------------------------------
+    int i = 0;//满足NDK所需的C99标准
+    char **argv = NULL;//命令集 二维指针
+    jstring *strr = NULL;
+
+    if (cmdline != NULL) {
+        argv = (char **) malloc(sizeof(char *) * cmdnum);
+        strr = (jstring *) malloc(sizeof(jstring) * cmdnum);
+
+        for (i = 0; i < cmdnum; ++i) {//转换
+            strr[i] = (jstring)(*env)->GetObjectArrayElement(env, cmdline, i);
+            argv[i] = (char *) (*env)->GetStringUTFChars(env, strr[i], 0);
+        }
+
+    }
+    //---------------------------------java 数组转C语言数组----------------------------------------
+    //---------------------------------执行FFmpeg命令相关----------------------------------------
+    //新建线程 执行ffmpeg 命令
+    ffmpeg_thread_run_cmd(cmdnum, argv);
+    //注册ffmpeg命令执行完毕时的回调
+    ffmpeg_thread_callback(ffmpeg_callback);
+
+    free(strr);
+    return 0;
+}
+
+JNIEXPORT void
+
+/*
+JNICALL Java_Jni_FFmpegCmd_exit
+        (JNIEnv *env, jclass clazz) {
+    (*env)->GetJavaVM(env, &jvm);
+    m_clazz = (*env)->NewGlobalRef(env, clazz);
+    ffmpeg_thread_cancel();
+}
+*/
diff --git a/app/jnicode/jni/Jni_FFmpegCmd.h b/app/jnicode/jni/Jni_FFmpegCmd.h
diff --git a/app/jnicode/jni/android_log.h b/app/jnicode/jni/android_log.h
@@ -0,0 +1,92 @@
+//#include <android/log.h>
+//#define LOGE(format, ...)  __android_log_print(ANDROID_LOG_ERROR, "ffmpeg_vdtest", format, ##__VA_ARGS__)
+//#define LOGI(format, ...)  __android_log_print(ANDROID_LOG_INFO,  "ffmpeg_vdtest", format, ##__VA_ARGS__)
+#include <android/log.h>
+static int use_log_report = 0;
+
+
+#define FF_LOG_TAG     "FFmpeg_EpMedia"
+
+
+#define FF_LOG_UNKNOWN     ANDROID_LOG_UNKNOWN
+#define FF_LOG_DEFAULT        ANDROID_LOG_DEFAULT
+
+
+#define FF_LOG_VERBOSE     ANDROID_LOG_VERBOSE
+#define FF_LOG_DEBUG         ANDROID_LOG_DEBUG
+#define FF_LOG_INFO              ANDROID_LOG_INFO
+#define FF_LOG_WARN           ANDROID_LOG_WARN
+#define FF_LOG_ERROR        ANDROID_LOG_ERROR
+#define FF_LOG_FATAL           ANDROID_LOG_FATAL
+#define FF_LOG_SILENT         ANDROID_LOG_SILENT
+
+
+#define VLOG(level, TAG, ...)    ((void)__android_log_vprint(level, TAG, __VA_ARGS__))
+#define VLOGV(...)  VLOG(FF_LOG_VERBOSE,   FF_LOG_TAG, __VA_ARGS__)
+#define VLOGD(...)  VLOG(FF_LOG_DEBUG,     FF_LOG_TAG, __VA_ARGS__)
+#define VLOGI(...)  VLOG(FF_LOG_INFO,      FF_LOG_TAG, __VA_ARGS__)
+#define VLOGW(...)  VLOG(FF_LOG_WARN,      FF_LOG_TAG, __VA_ARGS__)
+#define VLOGE(...)  VLOG(FF_LOG_ERROR,     FF_LOG_TAG, __VA_ARGS__)
+
+
+#define ALOG(level, TAG, ...)    ((void)__android_log_print(level, TAG, __VA_ARGS__))
+#define ALOGV(...)  ALOG(FF_LOG_VERBOSE,   FF_LOG_TAG, __VA_ARGS__)
+#define ALOGD(...)  ALOG(FF_LOG_DEBUG,     FF_LOG_TAG, __VA_ARGS__)
+#define ALOGI(...)  ALOG(FF_LOG_INFO,      FF_LOG_TAG, __VA_ARGS__)
+#define ALOGW(...)  ALOG(FF_LOG_WARN,      FF_LOG_TAG, __VA_ARGS__)
+#define ALOGE(...)  ALOG(FF_LOG_ERROR,     FF_LOG_TAG, __VA_ARGS__)
+
+#define LOGE(format, ...)  __android_log_print(ANDROID_LOG_ERROR, FF_LOG_TAG, format, ##__VA_ARGS__)
+#define LOGI(format, ...)  __android_log_print(ANDROID_LOG_INFO,  FF_LOG_TAG, format, ##__VA_ARGS__)
+
+
+/*belown printf info*/
+static void ffp_log_callback_brief(void *ptr, int level, const char *fmt, va_list vl)
+{
+    int ffplv = FF_LOG_VERBOSE;
+    if (level <= AV_LOG_ERROR)
+        ffplv = FF_LOG_ERROR;
+    else if (level <= AV_LOG_WARNING)
+        ffplv = FF_LOG_WARN;
+    else if (level <= AV_LOG_INFO)
+        ffplv = FF_LOG_INFO;
+    else if (level <= AV_LOG_VERBOSE)
+        ffplv = FF_LOG_VERBOSE;
+    else
+        ffplv = FF_LOG_DEBUG;
+
+
+    if (level <= AV_LOG_INFO)
+        VLOG(ffplv, FF_LOG_TAG, fmt, vl);
+}
+
+
+static void ffp_log_callback_report(void *ptr, int level, const char *fmt, va_list vl)
+{
+    int ffplv = FF_LOG_VERBOSE;
+    if (level <= AV_LOG_ERROR)
+        ffplv = FF_LOG_ERROR;
+    else if (level <= AV_LOG_WARNING)
+        ffplv = FF_LOG_WARN;
+    else if (level <= AV_LOG_INFO)
+        ffplv = FF_LOG_INFO;
+    else if (level <= AV_LOG_VERBOSE)
+        ffplv = FF_LOG_VERBOSE;
+    else
+        ffplv = FF_LOG_DEBUG;
+
+
+    va_list vl2;
+    char line[1024];
+    static int print_prefix = 1;
+
+
+    va_copy(vl2, vl);
+    // av_log_default_callback(ptr, level, fmt, vl);
+    av_log_format_line(ptr, level, fmt, vl2, line, sizeof(line), &print_prefix);
+    va_end(vl2);
+
+
+    ALOG(ffplv, FF_LOG_TAG, "%s", line);
+}
+
diff --git a/app/jnicode/jni/ffmpeg_thread.c b/app/jnicode/jni/ffmpeg_thread.c
@@ -0,0 +1,56 @@
+#include "libavcodec/avcodec.h"
+#include "ffmpeg_thread.h"
+#include "android_log.h"
+
+pthread_t ntid;
+char **argvs = NULL;
+int num=0;
+
+
+void *thread(void *arg)
+{   //执行
+    int result = ffmpeg_exec(num, argvs);
+    return ((void *)0);
+}
+/**
+ * 新建子线程执行ffmpeg命令
+ */
+int ffmpeg_thread_run_cmd(int cmdnum,char **argv){
+    num=cmdnum;
+    argvs=argv;
+
+    int temp =pthread_create(&ntid,NULL,thread,NULL);
+    if(temp!=0)
+    {
+        LOGE("can't create thread: %s ",strerror(temp));
+        return 1;
+    }
+    LOGI("create thread succes: %s ",strerror(temp));
+    return 0;
+}
+
+static void (*ffmpeg_callback)(int ret);
+/**
+ * 注册线程回调
+ */
+void ffmpeg_thread_callback(void (*cb)(int ret)){
+    ffmpeg_callback = cb;
+}
+
+/**
+ * 退出线程
+ */
+void ffmpeg_thread_exit(int ret){
+    if (ffmpeg_callback) {
+        ffmpeg_callback(ret);
+    }
+    pthread_exit("ffmpeg_thread_exit");
+}
+
+/**
+ * 取消线程
+ */
+void ffmpeg_thread_cancel(){
+    void *ret=NULL;
+    pthread_join(ntid, &ret);
+}
diff --git a/app/jnicode/jni/ffmpeg_thread.h b/app/jnicode/jni/ffmpeg_thread.h
@@ -0,0 +1,14 @@
+#include "libavcodec/avcodec.h"
+#include "libavformat/avformat.h"
+#include "libswscale/swscale.h"
+#include "ffmpeg.h"
+#include <pthread.h>
+#include <string.h>
+
+int ffmpeg_thread_run_cmd(int cmdnum,char **argv);
+
+void ffmpeg_thread_exit(int ret);
+
+void ffmpeg_thread_callback(void (*cb)(int ret));
+
+void ffmpeg_thread_cancel();
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1,2 @@
		APP_ABI := armeabi armeabi-v7a
		APP_PLATFORM=android-19