/**
 * \usergroup{SceAVConfig}
 * \usage{psp2/avconfig.h,SceAVConfig_stub}
 */


#ifndef _PSP2_AVCONFIG_H_
#define _PSP2_AVCONFIG_H_

#include <psp2/types.h>

#ifdef __cplusplus
extern "C" {
#endif

/***
 * Get the maximum brightness.
 *
 * @param[out] maxBrightness - Maximum brightness.
 *
 * @return 0 on success, < 0 on error.
 */
int sceAVConfigGetDisplayMaxBrightness(int *maxBrightness);

/***
 * Set the screen brightness.
 *
 * @param brightness - Brightness that the screen will be set to (range 21-65536, 0 turns off the screen).
 *
 * @return 0 on success, < 0 on error.
 */
int sceAVConfigSetDisplayBrightness(int brightness);

/***
 * Get the shutter volume.
 *
 * @param[out] volume - shutter volume.
 *
 * @return 0 on success, < 0 on error.
 */
int sceAVConfigGetShutterVol(int *volume);

/***
 * Get the system volume.
 *
 * @param[out] volume - System volume.
 *
 * @return 0 on success, < 0 on error.
 */
int sceAVConfigGetSystemVol(int *volume);

/***
 * Set the system volume.
 *
 * @param volume - volume that the device will be set to (range 0-30).
 *
 * @return 0 on success, < 0 on error.
 */
int sceAVConfigSetSystemVol(int volume);

/**
 * Turns on mute.
 *
 * @return 0 on success, < 0 on error.
 *
 */
int sceAVConfigMuteOn(void);


#ifdef __cplusplus
}
#endif

#endif


/**
 * \usergroup{SceAVConfig}
 * \usage{psp2/avconfig.h,SceAVConfig_stub}
 */


#ifndef _PSP2_AVCONFIG_H_
#define _PSP2_AVCONFIG_H_

#include <psp2/types.h>

#ifdef __cplusplus
extern "C" {
#endif

/***
 * Get the maximum brightness.
 *
 * @param[out] maxBrightness - Maximum brightness.
 *
 * @return 0 on success, < 0 on error.
 */
int sceAVConfigGetDisplayMaxBrightness(int *maxBrightness);

/***
 * Set the screen brightness.
 *
 * @param brightness - Brightness that the screen will be set to (range 21-65536, 0 turns off the screen).
 *
 * @return 0 on success, < 0 on error.
 */
int sceAVConfigSetDisplayBrightness(int brightness);


#ifdef __cplusplus
}
#endif

#endif


--- 
+++ 
@@ -31,6 +31,41 @@
  */
 int sceAVConfigSetDisplayBrightness(int brightness);
 
+/***
+ * Get the shutter volume.
+ *
+ * @param[out] volume - shutter volume.
+ *
+ * @return 0 on success, < 0 on error.
+ */
+int sceAVConfigGetShutterVol(int *volume);
+
+/***
+ * Get the system volume.
+ *
+ * @param[out] volume - System volume.
+ *
+ * @return 0 on success, < 0 on error.
+ */
+int sceAVConfigGetSystemVol(int *volume);
+
+/***
+ * Set the system volume.
+ *
+ * @param volume - volume that the device will be set to (range 0-30).
+ *
+ * @return 0 on success, < 0 on error.
+ */
+int sceAVConfigSetSystemVol(int volume);
+
+/**
+ * Turns on mute.
+ *
+ * @return 0 on success, < 0 on error.
+ *
+ */
+int sceAVConfigMuteOn(void);
+
 
 #ifdef __cplusplus
 }
Add some sceAVConfig volume functions
