vmeta add debug file option

Under Android, we cannot use printf. So we write to a debug file instead.
It's useful under Android.

2 files changed, 40 insertions, 8 deletions

diff --git a/vmeta_lib.c b/vmeta_lib.c
index 023a128..a1a69bf 100755
--- a/vmeta_lib.c
+++ b/vmeta_lib.c
@@ -403,11 +403,25 @@ SIGN32 vdec_os_driver_init(void)
 	int ret = 0;
 	int rv;
 
+#if VMETA_LOG_ON
+	FILE *fp_log;
+#endif
+
 	if(vdec_iface != NULL) {	// already been initiated in this process
 		vdec_iface->refcount++;
 		return ret;
 	}
 
+#if (VMETA_LOG_ON && 0)
+
+	fp_log = fopen(VMETA_LOG_FILE,"w");
+	if(fp_log == NULL) {
+		return -1;
+	}
+	fclose(fp_log);
+
+#endif
+
 	// Prepare the vdec os driver control interface
 	vdec_iface = (vdec_os_driver_cb_t*)malloc(sizeof(vdec_os_driver_cb_t));
 	memset((void*)vdec_iface, 0, sizeof(vdec_os_driver_cb_t));
@@ -423,7 +437,7 @@ SIGN32 vdec_os_driver_init(void)
 		ret = -VDEC_OS_DRIVER_OPEN_FAIL;
 		goto err_open_fail;
 	}
-	dbg_printf(VDEC_DEBUG_ALL, "vdec os driver open: %s\n", UIO_DEV);
+	dbg_printf(VDEC_DEBUG_ALL, "vdec os driver open: %s uiofd=%d\n", UIO_DEV,vdec_iface->uiofd);
 
 	vdec_iface->kern_ver = get_version(UIO_IO_VERSION);
 	if(vdec_iface->kern_ver < VMETA_KERN_MIN_VER) {
@@ -512,26 +526,42 @@ SIGN32 vdec_os_driver_clean(void)
 int dbg_printf(UNSG32 dbglevel, const char* format, ...) {
 	char dbgBuf[256] = {'\0'};
 	va_list var;
+#if VMETA_LOG_ON
+	FILE *fp_log = fopen(VMETA_LOG_FILE,"a+");
+	if(fp_log == NULL) {
+		return -1;
+	}
+#endif
 	
 	if(VDEC_DEBUG_NONE == globalDbgLevel)
-		return 0;
+		goto DBG_EXIT;
 	else {
 		va_start(var, format);
 		vsprintf(dbgBuf, format, var);
 		va_end(var);
 
 		if(VDEC_DEBUG_ALL & globalDbgLevel)
-			printf(dbgBuf);
+			goto DBG_PRINT;
 		else if((VDEC_DEBUG_MEM & globalDbgLevel) && (dbglevel == VDEC_DEBUG_MEM))
-			printf(dbgBuf);
+			goto DBG_PRINT;
 		else if((VDEC_DEBUG_LOCK & globalDbgLevel) && (dbglevel == VDEC_DEBUG_LOCK))
-			printf(dbgBuf);
+			goto DBG_PRINT;
 		else if((VDEC_DEBUG_VER & globalDbgLevel) && (dbglevel == VDEC_DEBUG_VER))
-			printf(dbgBuf);
+			goto DBG_PRINT;
 		else
-			return 0;
+			goto DBG_EXIT;
 	}
-
+DBG_PRINT:
+#if VMETA_LOG_ON
+	fprintf(fp_log,dbgBuf);
+#else
+	printf(dbgBuf);
+#endif
+
+DBG_EXIT:
+#if VMETA_LOG_ON
+	fclose(fp_log);
+#endif
 	return 0;
 }
 
diff --git a/vmeta_lib.h b/vmeta_lib.h
index dd9a262..5f8e93f 100755
--- a/vmeta_lib.h
+++ b/vmeta_lib.h
@@ -171,6 +171,8 @@ typedef enum _LOCK_RET_CODE {
 }LOCK_RET_CODE;
 
 /* display debug message */
+#define VMETA_LOG_ON 0
+#define VMETA_LOG_FILE "/data/vmeta_dbg.log"
 int dbg_printf(UNSG32 dbglevel, const char* format, ...);
 
 typedef sem_t lock_t;