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diff --git a/android/utils/debug.h b/android/utils/debug.h
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+++ b/android/utils/debug.h
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+/* Copyright (C) 2007-2008 The Android Open Source Project
+**
+** This software is licensed under the terms of the GNU General Public
+** License version 2, as published by the Free Software Foundation, and
+** may be copied, distributed, and modified under those terms.
+**
+** This program is distributed in the hope that it will be useful,
+** but WITHOUT ANY WARRANTY; without even the implied warranty of
+** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+** GNU General Public License for more details.
+*/
+#ifndef _ANDROID_UTILS_DEBUG_H
+#define _ANDROID_UTILS_DEBUG_H
+
+#include <stdarg.h>
+
+#define  VERBOSE_TAG_LIST    \
+    _VERBOSE_TAG(init,         "emulator initialization")  \
+    _VERBOSE_TAG(console,      "control console")  \
+    _VERBOSE_TAG(modem,        "emulated GSM modem")  \
+    _VERBOSE_TAG(radio,        "emulated GSM AT Command channel") \
+    _VERBOSE_TAG(keys,         "key bindings & presses") \
+    _VERBOSE_TAG(slirp,        "internal router/firewall") \
+    _VERBOSE_TAG(timezone,     "host timezone detection" ) \
+    _VERBOSE_TAG(socket,       "network sockets") \
+    _VERBOSE_TAG(proxy,        "network proxy support") \
+    _VERBOSE_TAG(audio,        "audio sub-system") \
+    _VERBOSE_TAG(audioin,      "audio input backend") \
+    _VERBOSE_TAG(audioout,     "audio output backend") \
+    _VERBOSE_TAG(surface,      "video surface support") \
+    _VERBOSE_TAG(qemud,        "qemud multiplexer daemon") \
+    _VERBOSE_TAG(gps,          "emulated GPS") \
+    _VERBOSE_TAG(nand_limits,  "nand/flash read/write thresholding") \
+    _VERBOSE_TAG(hw_control,   "emulated power/flashlight/led/vibrator") \
+    _VERBOSE_TAG(avd_config,   "android virtual device configuration") \
+
+#define  _VERBOSE_TAG(x,y)  VERBOSE_##x,
+typedef enum {
+    VERBOSE_TAG_LIST
+    VERBOSE_MAX  /* do not remove */
+} VerboseTag;
+#undef  _VERBOSE_TAG
+
+/* defined in android_main.c */
+extern unsigned long  android_verbose;
+
+#define  VERBOSE_ENABLE(tag)    \
+    android_verbose |= (1 << VERBOSE_##tag)
+
+#define  VERBOSE_DISABLE(tag)   \
+    android_verbose &= (1 << VERBOSE_##tag)
+
+#define  VERBOSE_CHECK(tag)    \
+    ((android_verbose & (1 << VERBOSE_##tag)) != 0)
+
+#define  VERBOSE_CHECK_ANY()    \
+    (android_verbose != 0)
+
+#define  VERBOSE_PRINT(tag,...)  \
+    do { if (VERBOSE_CHECK(tag)) dprint(__VA_ARGS__); } while (0)
+
+/** DEBUG TRACE SUPPORT
+ **
+ ** debug messages can be sent by calling these function
+ **
+ ** 'dprint' prints the message, then appends a '\n\
+ ** 'dprintn' simply prints the message as is
+ ** 'dprintnv' allows you to use a va_list argument
+ ** 'dwarning' prints a warning message, then appends a '\n'
+ ** 'derror' prints a severe error message, then appends a '\n'
+ */
+
+extern void   dprint( const char*  format, ... );
+extern void   dprintn( const char*  format, ... );
+extern void   dprintnv( const char*  format, va_list  args );
+extern void   dwarning( const char*  format, ... );
+extern void   derror( const char*  format, ... );
+
+/** STDOUT/STDERR REDIRECTION
+ **
+ ** allows you to shut temporarily shutdown stdout/stderr
+ ** this is useful to get rid of debug messages from ALSA and esd
+ ** on Linux.
+ **/
+
+extern void  stdio_disable( void );
+extern void  stdio_enable( void );
+
+/* */
+
+#endif /* _ANDROID_UTILS_DEBUG_H */