log.c File Reference

Go to the source code of this file.

Functions
jint	JNI_OnLoad (JavaVM *vm, void *reserved)
static void *	logThreadFunction ()
JNIEXPORT jint JNICALL	Java_com_arthenica_mobileffmpeg_Log_startNativeCollector (JNIEnv *env, jobject object)
JNIEXPORT jint JNICALL	Java_com_arthenica_mobileffmpeg_Log_stopNativeCollector (JNIEnv *env, jobject object)

Variables
static JavaVM *	globalVm
static jclass	logClass
static jmethodID	logMethod
static int	pipeFd [2]
static pthread_t	logThread
static int	logThreadEnabled = 1
const char *	logClassName = "com/arthenica/mobileffmpeg/Log"
JNINativeMethod	logMethods []

Function Documentation

Java_com_arthenica_mobileffmpeg_Log_startNativeCollector()

JNIEXPORT jint JNICALL Java_com_arthenica_mobileffmpeg_Log_startNativeCollector	(	JNIEnv *	env,
		jobject	object
	)

Starts native log collector. Native log collector creates a pipe and redirects stdout and stderr to it. Then starts a thread, reads data written to this pipe and forwards it to the Java side.

Parameters

env	pointer to native method interface
object	reference to the object on which this method is invoked

Returns

zero on success, non-zero if an error occurs

Definition at line 140 of file log.c.

Java_com_arthenica_mobileffmpeg_Log_stopNativeCollector()

JNIEXPORT jint JNICALL Java_com_arthenica_mobileffmpeg_Log_stopNativeCollector	(	JNIEnv *	env,
		jobject	object
	)

Initiates a stop request for native log collector thread. Please note that when this function returns collector thread might be still alive.

Parameters

env	pointer to native method interface
object	reference to the object on which this method is invoked

Returns

zero on success, non-zero if an error occurs

Definition at line 169 of file log.c.

JNI_OnLoad()

jint JNI_OnLoad	(	JavaVM *	vm,
		void *	reserved
	)

Called when 'ffmpeglog' native library is loaded.

Parameters

vm	pointer to the running virtual machine
reserved	reserved

Returns

JNI version needed by 'ffmpeglog' library

Definition at line 56 of file log.c.

logThreadFunction()

static void* logThreadFunction ( )

static

Native log collector main thread function.

Definition at line 91 of file log.c.

Variable Documentation

globalVm

JavaVM* globalVm

static

Global reference to the virtual machine running

Definition at line 23 of file log.c.

logClass

jclass logClass

static

Global reference of Log class in Java side

Definition at line 26 of file log.c.

logClassName

const char* logClassName = "com/arthenica/mobileffmpeg/Log"

Full name of the Java class that owns native functions in this file.

Definition at line 41 of file log.c.

logMethod

jmethodID logMethod

static

Global reference of forward log method in Java side

Definition at line 29 of file log.c.

logMethods

JNINativeMethod logMethods[]

Initial value:

= {
    {"startNativeCollector", "()I", (void*) Java_com_arthenica_mobileffmpeg_Log_startNativeCollector},
    {"stopNativeCollector", "()I", (void*) Java_com_arthenica_mobileffmpeg_Log_stopNativeCollector}
}

Prototypes of native functions defined by this file.

Definition at line 44 of file log.c.

logThread

pthread_t logThread

static

log collector thread variable

Definition at line 35 of file log.c.

logThreadEnabled

int logThreadEnabled = 1

static

Holds whether log collector thread is enabled or not

Definition at line 38 of file log.c.

pipeFd

int pipeFd[2]

static

file descriptor of the pipe created

Definition at line 32 of file log.c.