Add HID keymap handling in usb screen. This allows to use the DAP as a keypad to control the PC. The current keymaps are audio-oriented (play/pause/volume/...) (FS#10218 by Tomer Shalev)

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21054 a1c6a512-1295-4272-9138-f99709370657

14 files changed, 422 insertions, 11 deletions

diff --git a/apps/action.h b/apps/action.h
index bd215de..9869fb3 100644
--- a/apps/action.h
+++ b/apps/action.h
@@ -74,6 +74,7 @@ enum {
     CONTEXT_RECSCREEN,
     CONTEXT_KEYBOARD,
     CONTEXT_FM,
+    CONTEXT_USB_HID,
 };
 
 
@@ -237,6 +238,15 @@ enum {
     ACTION_TOUCH_REPMODE,
 #endif    
 
+    /* USB HID codes */
+    ACTION_USB_HID_PLAY,
+    ACTION_USB_HID_STOP,
+    ACTION_USB_HID_SKIPPREV,
+    ACTION_USB_HID_SKIPNEXT,
+    ACTION_USB_HID_VOLDOWN,
+    ACTION_USB_HID_VOLUP,
+    ACTION_USB_HID_MUTE,
+    ACTION_USB_HID_MENU,
 
     LAST_ACTION_PLACEHOLDER, /* custom actions should be this + something */
 };
diff --git a/apps/keymaps/keymap-c100.c b/apps/keymaps/keymap-c100.c
index 70cb17a..087be86 100644
--- a/apps/keymaps/keymap-c100.c
+++ b/apps/keymaps/keymap-c100.c
@@ -269,6 +269,19 @@ static const struct button_mapping button_context_bmark[]  = {
     LAST_ITEM_IN_LIST__NEXTLIST(CONTEXT_LIST),
 }; /* button_context_bmark */
 
+#ifdef HAVE_USBSTACK
+static const struct button_mapping button_context_usb_hid[] = {
+    { ACTION_USB_HID_PLAY,     BUTTON_VOLUP,                     BUTTON_NONE },
+    { ACTION_USB_HID_STOP,     BUTTON_VOLUP|BUTTON_REPEAT,       BUTTON_NONE },
+    { ACTION_USB_HID_SKIPPREV, BUTTON_LEFT,                      BUTTON_NONE },
+    { ACTION_USB_HID_SKIPNEXT, BUTTON_RIGHT,                     BUTTON_NONE },
+    { ACTION_USB_HID_MUTE,     BUTTON_VOLDOWN,                   BUTTON_NONE },
+    { ACTION_USB_HID_MENU,     BUTTON_MENU,                      BUTTON_NONE },
+
+    LAST_ITEM_IN_LIST
+}; /* button_context_usb_hid */
+#endif
+
 /* get_context_mapping returns a pointer to one of the above defined arrays depending on the context */
 const struct button_mapping* get_context_mapping(int context)
 {
@@ -317,7 +330,10 @@ const struct button_mapping* get_context_mapping(int context)
 #endif
         case CONTEXT_KEYBOARD:
             return button_context_keyboard;
-
+#ifdef HAVE_USBSTACK
+        case CONTEXT_USB_HID:
+            return button_context_usb_hid;
+#endif
         default:
             return button_context_standard;
     } 
diff --git a/apps/keymaps/keymap-c200.c b/apps/keymaps/keymap-c200.c
index 430ca50..5650458 100644
--- a/apps/keymaps/keymap-c200.c
+++ b/apps/keymaps/keymap-c200.c
@@ -281,6 +281,23 @@ static const struct button_mapping button_context_bmark[]  = {
     LAST_ITEM_IN_LIST__NEXTLIST(CONTEXT_LIST),
 }; /* button_context_bmark */
 
+#ifdef HAVE_USBSTACK
+static const struct button_mapping button_context_usb_hid[] = {
+    { ACTION_USB_HID_PLAY,     BUTTON_UP,                        BUTTON_NONE },
+    { ACTION_USB_HID_STOP,     BUTTON_UP|BUTTON_REPEAT,          BUTTON_NONE },
+    { ACTION_USB_HID_SKIPPREV, BUTTON_LEFT,                      BUTTON_NONE },
+    { ACTION_USB_HID_SKIPNEXT, BUTTON_RIGHT,                     BUTTON_NONE },
+    { ACTION_USB_HID_VOLUP,    BUTTON_VOL_UP,                    BUTTON_NONE },
+    { ACTION_USB_HID_VOLUP,    BUTTON_VOL_UP|BUTTON_REPEAT,      BUTTON_NONE },
+    { ACTION_USB_HID_VOLDOWN,  BUTTON_VOL_DOWN,                  BUTTON_NONE },
+    { ACTION_USB_HID_VOLDOWN,  BUTTON_VOL_DOWN|BUTTON_REPEAT,    BUTTON_NONE },
+    { ACTION_USB_HID_MUTE,     BUTTON_DOWN,                      BUTTON_NONE },
+    { ACTION_USB_HID_MENU,     BUTTON_POWER,                     BUTTON_NONE },
+
+    LAST_ITEM_IN_LIST
+}; /* button_context_usb_hid */
+#endif
+
 /* get_context_mapping returns a pointer to one of the above defined arrays depending on the context */
 const struct button_mapping* get_context_mapping(int context)
 {
@@ -330,7 +347,10 @@ const struct button_mapping* get_context_mapping(int context)
 #endif
         case CONTEXT_KEYBOARD:
             return button_context_keyboard;
-
+#ifdef HAVE_USBSTACK
+        case CONTEXT_USB_HID:
+            return button_context_usb_hid;
+#endif
         default:
             return button_context_standard;
     } 
diff --git a/apps/keymaps/keymap-clip.c b/apps/keymaps/keymap-clip.c
index e1d31cb..4b778be 100644
--- a/apps/keymaps/keymap-clip.c
+++ b/apps/keymaps/keymap-clip.c
@@ -265,6 +265,23 @@ static const struct button_mapping button_context_bmark[]  = {
     LAST_ITEM_IN_LIST__NEXTLIST(CONTEXT_LIST),
 }; /* button_context_bmark */
 
+#ifdef HAVE_USBSTACK
+static const struct button_mapping button_context_usb_hid[] = {
+    { ACTION_USB_HID_PLAY,     BUTTON_UP,                        BUTTON_NONE },
+    { ACTION_USB_HID_STOP,     BUTTON_POWER,                     BUTTON_NONE },
+    { ACTION_USB_HID_SKIPPREV, BUTTON_LEFT,                      BUTTON_NONE },
+    { ACTION_USB_HID_SKIPNEXT, BUTTON_RIGHT,                     BUTTON_NONE },
+    { ACTION_USB_HID_VOLUP,    BUTTON_VOL_UP,                    BUTTON_NONE },
+    { ACTION_USB_HID_VOLUP,    BUTTON_VOL_UP|BUTTON_REPEAT,      BUTTON_NONE },
+    { ACTION_USB_HID_VOLDOWN,  BUTTON_VOL_DOWN,                  BUTTON_NONE },
+    { ACTION_USB_HID_VOLDOWN,  BUTTON_VOL_DOWN|BUTTON_REPEAT,    BUTTON_NONE },
+    { ACTION_USB_HID_MUTE,     BUTTON_SELECT,                    BUTTON_NONE },
+    { ACTION_USB_HID_MENU,     BUTTON_DOWN,                      BUTTON_NONE },
+
+    LAST_ITEM_IN_LIST
+}; /* button_context_usb_hid */
+#endif
+
 /* get_context_mapping returns a pointer to one of the above defined arrays depending on the context */
 const struct button_mapping* get_context_mapping(int context)
 {
@@ -310,7 +327,10 @@ const struct button_mapping* get_context_mapping(int context)
             return button_context_recscreen;
         case CONTEXT_KEYBOARD:
             return button_context_keyboard;
-
+#ifdef HAVE_USBSTACK
+        case CONTEXT_USB_HID:
+            return button_context_usb_hid;
+#endif
         default:
             return button_context_standard;
     }
diff --git a/apps/keymaps/keymap-e200.c b/apps/keymaps/keymap-e200.c
index c94ae03..a2017de 100644
--- a/apps/keymaps/keymap-e200.c
+++ b/apps/keymaps/keymap-e200.c
@@ -271,6 +271,23 @@ static const struct button_mapping button_context_bmark[]  = {
     LAST_ITEM_IN_LIST__NEXTLIST(CONTEXT_LIST),
 }; /* button_context_bmark */
 
+#ifdef HAVE_USBSTACK
+static const struct button_mapping button_context_usb_hid[] = {
+    { ACTION_USB_HID_PLAY,     BUTTON_UP,                        BUTTON_NONE },
+    { ACTION_USB_HID_STOP,     BUTTON_POWER,                     BUTTON_NONE },
+    { ACTION_USB_HID_SKIPPREV, BUTTON_LEFT,                      BUTTON_NONE },
+    { ACTION_USB_HID_SKIPNEXT, BUTTON_RIGHT,                     BUTTON_NONE },
+    { ACTION_USB_HID_VOLUP,    BUTTON_SCROLL_FWD,                BUTTON_NONE },
+    { ACTION_USB_HID_VOLUP,    BUTTON_SCROLL_FWD|BUTTON_REPEAT,  BUTTON_NONE },
+    { ACTION_USB_HID_VOLDOWN,  BUTTON_SCROLL_BACK,               BUTTON_NONE },
+    { ACTION_USB_HID_VOLDOWN,  BUTTON_SCROLL_BACK|BUTTON_REPEAT, BUTTON_NONE },
+    { ACTION_USB_HID_MUTE,     BUTTON_SELECT,                    BUTTON_NONE },
+    { ACTION_USB_HID_MENU,     BUTTON_DOWN,                      BUTTON_NONE },
+
+    LAST_ITEM_IN_LIST
+}; /* button_context_usb_hid */
+#endif
+
 /* get_context_mapping returns a pointer to one of the above defined arrays depending on the context */
 const struct button_mapping* get_context_mapping(int context)
 {
@@ -318,7 +335,10 @@ const struct button_mapping* get_context_mapping(int context)
             return button_context_recscreen;
         case CONTEXT_KEYBOARD:
             return button_context_keyboard;
-
+#ifdef HAVE_USBSTACK
+        case CONTEXT_USB_HID:
+            return button_context_usb_hid;
+#endif
         default:
             return button_context_standard;
     } 
diff --git a/apps/keymaps/keymap-gigabeat-s.c b/apps/keymaps/keymap-gigabeat-s.c
index f431f5f..4fc7e8d 100644
--- a/apps/keymaps/keymap-gigabeat-s.c
+++ b/apps/keymaps/keymap-gigabeat-s.c
@@ -464,6 +464,42 @@ static const struct button_mapping remote_button_context_right_is_inc[]  = {
     LAST_ITEM_IN_LIST
 }; /* remote_button_context_right_is_inc */
 
+#ifdef HAVE_USBSTACK
+static const struct button_mapping button_context_usb_hid[] = {
+    { ACTION_USB_HID_PLAY,     BUTTON_PLAY,                      BUTTON_NONE },
+    { ACTION_USB_HID_STOP,     BUTTON_POWER,                     BUTTON_NONE },
+    { ACTION_USB_HID_SKIPPREV, BUTTON_LEFT,                      BUTTON_NONE },
+    { ACTION_USB_HID_SKIPNEXT, BUTTON_RIGHT,                     BUTTON_NONE },
+    { ACTION_USB_HID_VOLUP,    BUTTON_UP,                        BUTTON_NONE },
+    { ACTION_USB_HID_VOLUP,    BUTTON_UP|BUTTON_REPEAT,          BUTTON_NONE },
+    { ACTION_USB_HID_VOLUP,    BUTTON_VOL_UP,                    BUTTON_NONE },
+    { ACTION_USB_HID_VOLUP,    BUTTON_VOL_UP|BUTTON_REPEAT,      BUTTON_NONE },
+    { ACTION_USB_HID_VOLDOWN,  BUTTON_DOWN,                      BUTTON_NONE },
+    { ACTION_USB_HID_VOLDOWN,  BUTTON_DOWN|BUTTON_REPEAT,        BUTTON_NONE },
+    { ACTION_USB_HID_VOLDOWN,  BUTTON_VOL_DOWN,                  BUTTON_NONE },
+    { ACTION_USB_HID_VOLDOWN,  BUTTON_VOL_DOWN|BUTTON_REPEAT,    BUTTON_NONE },
+    { ACTION_USB_HID_MUTE,     BUTTON_SELECT,                    BUTTON_NONE },
+    { ACTION_USB_HID_MENU,     BUTTON_MENU,                      BUTTON_NONE },
+
+    LAST_ITEM_IN_LIST
+}; /* button_context_usb_hid */
+
+static const struct button_mapping remote_button_context_usb_hid[] = {
+    { ACTION_USB_HID_PLAY,     BUTTON_RC_PLAY,                   BUTTON_NONE },
+    { ACTION_USB_HID_STOP,     BUTTON_RC_POWER,                  BUTTON_NONE },
+    { ACTION_USB_HID_SKIPPREV, BUTTON_RC_REW,                    BUTTON_NONE },
+    { ACTION_USB_HID_SKIPNEXT, BUTTON_RC_FF,                     BUTTON_NONE },
+    { ACTION_USB_HID_VOLUP,    BUTTON_RC_VOL_UP,                 BUTTON_NONE },
+    { ACTION_USB_HID_VOLUP,    BUTTON_RC_VOL_UP|BUTTON_REPEAT,   BUTTON_NONE },
+    { ACTION_USB_HID_VOLDOWN,  BUTTON_RC_VOL_DOWN,               BUTTON_NONE },
+    { ACTION_USB_HID_VOLDOWN,  BUTTON_RC_VOL_DOWN|BUTTON_REPEAT, BUTTON_NONE },
+    { ACTION_USB_HID_MUTE,     BUTTON_RC_DSP|BUTTON_REPEAT,      BUTTON_NONE },
+    { ACTION_USB_HID_MENU,     BUTTON_RC_DSP,                    BUTTON_NONE },
+
+    LAST_ITEM_IN_LIST
+}; /* remote_button_context_usb_hid */
+#endif
+
 static const struct button_mapping* get_context_mapping_remote( int context )
 {
     context &= ~CONTEXT_REMOTE;
@@ -506,6 +542,10 @@ static const struct button_mapping* get_context_mapping_remote( int context )
         case CONTEXT_FM:
             return remote_button_context_radio;
 
+#ifdef HAVE_USBSTACK
+        case CONTEXT_USB_HID:
+            return remote_button_context_usb_hid;
+#endif
         default:
             return remote_button_context_standard;
     }
@@ -573,6 +613,10 @@ const struct button_mapping* get_context_mapping(int context)
         case CONTEXT_FM:
             return button_context_radio;
 
+#ifdef HAVE_USBSTACK
+        case CONTEXT_USB_HID:
+            return button_context_usb_hid;
+#endif
         default:
             return button_context_standard;
     }
diff --git a/apps/keymaps/keymap-h10.c b/apps/keymaps/keymap-h10.c
index 9afca4e..77247d3 100644
--- a/apps/keymaps/keymap-h10.c
+++ b/apps/keymaps/keymap-h10.c
@@ -332,6 +332,61 @@ static const struct button_mapping button_context_radio[]  = {
     
 };
 
+
+
+
+
+
+static const struct button_mapping remote_button_context_wps[]  = {
+    { ACTION_WPS_PLAY,     BUTTON_RC_PLAY|BUTTON_REL,   BUTTON_RC_PLAY },
+    { ACTION_WPS_STOP,     BUTTON_RC_PLAY|BUTTON_REPEAT,BUTTON_RC_PLAY },
+    { ACTION_WPS_SKIPPREV, BUTTON_RC_REW|BUTTON_REL,    BUTTON_RC_REW},
+    { ACTION_WPS_SEEKBACK, BUTTON_RC_REW|BUTTON_REPEAT, BUTTON_NONE },
+    { ACTION_WPS_STOPSEEK, BUTTON_RC_REW|BUTTON_REL,    BUTTON_RC_REW|BUTTON_REPEAT },
+    { ACTION_WPS_SKIPNEXT, BUTTON_RC_FF|BUTTON_REL,     BUTTON_RC_FF },
+    { ACTION_WPS_SEEKFWD,  BUTTON_RC_FF|BUTTON_REPEAT,  BUTTON_NONE },
+    { ACTION_WPS_STOPSEEK, BUTTON_RC_FF|BUTTON_REL,     BUTTON_RC_FF|BUTTON_REPEAT },
+    
+    { ACTION_WPS_VOLDOWN, BUTTON_RC_VOL_DOWN,                  BUTTON_NONE },
+    { ACTION_WPS_VOLDOWN, BUTTON_RC_VOL_DOWN|BUTTON_REPEAT,    BUTTON_NONE },
+    { ACTION_WPS_VOLUP,   BUTTON_RC_VOL_UP,                    BUTTON_NONE },
+    { ACTION_WPS_VOLUP,   BUTTON_RC_VOL_UP|BUTTON_REPEAT,      BUTTON_NONE },
+
+    { ACTION_WPS_PITCHSCREEN,   BUTTON_RC_PLAY|BUTTON_LEFT,    BUTTON_RC_PLAY },
+    { ACTION_WPS_ID3SCREEN,     BUTTON_RC_PLAY|BUTTON_RIGHT,   BUTTON_RC_PLAY },
+    
+    LAST_ITEM_IN_LIST
+}; /* remote_button_context_wps */
+
+#ifdef HAVE_USBSTACK
+static const struct button_mapping button_context_usb_hid[] = {
+    { ACTION_USB_HID_PLAY,     BUTTON_PLAY,                      BUTTON_NONE },
+    { ACTION_USB_HID_STOP,     BUTTON_PLAY|BUTTON_REPEAT,        BUTTON_NONE },
+    { ACTION_USB_HID_SKIPPREV, BUTTON_REW,                       BUTTON_NONE },
+    { ACTION_USB_HID_SKIPNEXT, BUTTON_FF,                        BUTTON_NONE },
+    { ACTION_USB_HID_VOLUP,    BUTTON_SCROLL_UP,                 BUTTON_NONE },
+    { ACTION_USB_HID_VOLUP,    BUTTON_SCROLL_UP|BUTTON_REPEAT,   BUTTON_NONE },
+    { ACTION_USB_HID_VOLDOWN,  BUTTON_SCROLL_DOWN,               BUTTON_NONE },
+    { ACTION_USB_HID_VOLDOWN,  BUTTON_SCROLL_DOWN|BUTTON_REPEAT, BUTTON_NONE },
+    { ACTION_USB_HID_MENU,     BUTTON_POWER,                     BUTTON_NONE },
+
+    LAST_ITEM_IN_LIST
+}; /* button_context_usb_hid */
+
+static const struct button_mapping remote_button_context_usb_hid[] = {
+    { ACTION_USB_HID_PLAY,     BUTTON_RC_PLAY,                   BUTTON_NONE },
+    { ACTION_USB_HID_STOP,     BUTTON_RC_PLAY|BUTTON_REPEAT,     BUTTON_NONE },
+    { ACTION_USB_HID_SKIPPREV, BUTTON_RC_REW,                    BUTTON_NONE },
+    { ACTION_USB_HID_SKIPNEXT, BUTTON_RC_FF,                     BUTTON_NONE },
+    { ACTION_USB_HID_VOLUP,    BUTTON_RC_SCROLL_UP,                 BUTTON_NONE },
+    { ACTION_USB_HID_VOLUP,    BUTTON_RC_SCROLL_UP|BUTTON_REPEAT,   BUTTON_NONE },
+    { ACTION_USB_HID_VOLDOWN,  BUTTON_RC_SCROLL_DOWN,               BUTTON_NONE },
+    { ACTION_USB_HID_VOLDOWN,  BUTTON_RC_SCROLL_DOWN|BUTTON_REPEAT, BUTTON_NONE },
+
+    LAST_ITEM_IN_LIST
+}; /* remote_button_context_usb_hid */
+#endif
+
 static const struct button_mapping* get_context_mapping_remote( int context )
 {
     context ^= CONTEXT_REMOTE;
@@ -361,6 +416,10 @@ static const struct button_mapping* get_context_mapping_remote( int context )
             return remote_button_context_pitchscreen;
         case CONTEXT_RECSCREEN:
             return button_context_recscreen;
+#ifdef HAVE_USBSTACK
+        case CONTEXT_USB_HID:
+            return remote_button_context_usb_hid;
+#endif
 
         default:
             return remote_button_context_standard;
@@ -415,6 +474,10 @@ const struct button_mapping* get_context_mapping(int context)
             return button_context_recscreen;
         case CONTEXT_FM:
             return button_context_radio;
+#ifdef HAVE_USBSTACK
+        case CONTEXT_USB_HID:
+            return button_context_usb_hid;
+#endif
         default:
             return button_context_standard;
     } 
diff --git a/apps/keymaps/keymap-hdd1630.c b/apps/keymaps/keymap-hdd1630.c
index 6b38983..deb7730 100644
--- a/apps/keymaps/keymap-hdd1630.c
+++ b/apps/keymaps/keymap-hdd1630.c
@@ -282,6 +282,27 @@ static const struct button_mapping button_context_radio[]  = {
 };
 #endif
 
+#ifdef HAVE_USBSTACK
+static const struct button_mapping button_context_usb_hid[] = {
+    { ACTION_USB_HID_PLAY,     BUTTON_VIEW,                      BUTTON_NONE },
+    { ACTION_USB_HID_STOP,     BUTTON_POWER,                     BUTTON_NONE },
+    { ACTION_USB_HID_SKIPPREV, BUTTON_LEFT,                      BUTTON_NONE },
+    { ACTION_USB_HID_SKIPNEXT, BUTTON_RIGHT,                     BUTTON_NONE },
+    { ACTION_USB_HID_VOLUP,    BUTTON_UP,                        BUTTON_NONE },
+    { ACTION_USB_HID_VOLUP,    BUTTON_UP|BUTTON_REPEAT,          BUTTON_NONE },
+    { ACTION_USB_HID_VOLUP,    BUTTON_VOL_UP,                    BUTTON_NONE },
+    { ACTION_USB_HID_VOLUP,    BUTTON_VOL_UP|BUTTON_REPEAT,      BUTTON_NONE },
+    { ACTION_USB_HID_VOLDOWN,  BUTTON_DOWN,                      BUTTON_NONE },
+    { ACTION_USB_HID_VOLDOWN,  BUTTON_DOWN|BUTTON_REPEAT,        BUTTON_NONE },
+    { ACTION_USB_HID_VOLDOWN,  BUTTON_VOL_DOWN,                  BUTTON_NONE },
+    { ACTION_USB_HID_VOLDOWN,  BUTTON_VOL_DOWN|BUTTON_REPEAT,    BUTTON_NONE },
+    { ACTION_USB_HID_MUTE,     BUTTON_SELECT,                    BUTTON_NONE },
+    { ACTION_USB_HID_MENU,     BUTTON_MENU,                      BUTTON_NONE },
+
+    LAST_ITEM_IN_LIST
+}; /* button_context_usb_hid */
+#endif
+
 const struct button_mapping* get_context_mapping(int context)
 {
     switch (context)
@@ -329,6 +350,10 @@ const struct button_mapping* get_context_mapping(int context)
         case CONTEXT_FM:
             return button_context_radio;
 #endif
+#ifdef HAVE_USBSTACK
+        case CONTEXT_USB_HID:
+            return button_context_usb_hid;
+#endif
     }
     return button_context_standard;
 }
diff --git a/apps/keymaps/keymap-ipod.c b/apps/keymaps/keymap-ipod.c
index a7aeb27..163a810 100644
--- a/apps/keymaps/keymap-ipod.c
+++ b/apps/keymaps/keymap-ipod.c
@@ -188,6 +188,23 @@ const struct button_mapping button_context_recscreen[]  = {
 }; /* button_context_recscreen */
 #endif
 
+#ifdef HAVE_USBSTACK
+static const struct button_mapping button_context_usb_hid[] = {
+    { ACTION_USB_HID_PLAY,     BUTTON_PLAY,                      BUTTON_NONE },
+    { ACTION_USB_HID_STOP,     BUTTON_PLAY|BUTTON_REPEAT,        BUTTON_NONE },
+    { ACTION_USB_HID_SKIPPREV, BUTTON_LEFT,                      BUTTON_NONE },
+    { ACTION_USB_HID_SKIPNEXT, BUTTON_RIGHT,                     BUTTON_NONE },
+    { ACTION_USB_HID_VOLUP,    BUTTON_SCROLL_FWD,                BUTTON_NONE },
+    { ACTION_USB_HID_VOLUP,    BUTTON_SCROLL_FWD|BUTTON_REPEAT,  BUTTON_NONE },
+    { ACTION_USB_HID_VOLDOWN,  BUTTON_SCROLL_BACK,               BUTTON_NONE },
+    { ACTION_USB_HID_VOLDOWN,  BUTTON_SCROLL_BACK|BUTTON_REPEAT, BUTTON_NONE },
+    { ACTION_USB_HID_MUTE,     BUTTON_SELECT,                    BUTTON_NONE },
+    { ACTION_USB_HID_MENU,     BUTTON_MENU,                      BUTTON_NONE },
+
+    LAST_ITEM_IN_LIST
+}; /* button_context_usb_hid */
+#endif
+
 #if BUTTON_REMOTE != 0
 /*****************************************************************************
  *    Remote control mappings
@@ -220,6 +237,20 @@ static const struct button_mapping remote_button_context_wps[]  = {
     LAST_ITEM_IN_LIST__NEXTLIST(CONTEXT_STD)
 };
 
+#ifdef HAVE_USBSTACK
+static const struct button_mapping remote_button_context_usb_hid[] = {
+    { ACTION_USB_HID_PLAY,     BUTTON_RC_PLAY,                   BUTTON_NONE },
+    { ACTION_USB_HID_STOP,     BUTTON_RC_PLAY|BUTTON_REPEAT,     BUTTON_NONE },
+    { ACTION_USB_HID_SKIPPREV, BUTTON_RC_LEFT,                   BUTTON_NONE },
+    { ACTION_USB_HID_SKIPNEXT, BUTTON_RC_RIGHT,                  BUTTON_NONE },
+    { ACTION_USB_HID_VOLUP,    BUTTON_RC_VOL_UP,                 BUTTON_NONE },
+    { ACTION_USB_HID_VOLUP,    BUTTON_RC_VOL_UP|BUTTON_REPEAT,   BUTTON_NONE },
+    { ACTION_USB_HID_VOLDOWN,  BUTTON_RC_VOL_DOWN,               BUTTON_NONE },
+    { ACTION_USB_HID_VOLDOWN,  BUTTON_RC_VOL_DOWN|BUTTON_REPEAT, BUTTON_NONE },
+
+    LAST_ITEM_IN_LIST
+}; /* remote_button_context_usb_hid */
+#endif
 
 static const struct button_mapping* get_context_mapping_remote( int context )
 {
@@ -229,7 +260,10 @@ static const struct button_mapping* get_context_mapping_remote( int context )
     {
         case CONTEXT_WPS:
             return remote_button_context_wps;
-
+#ifdef HAVE_USBSTACK
+        case CONTEXT_USB_HID:
+            return remote_button_context_usb_hid;
+#endif
         default:
             return remote_button_context_standard;
     }
@@ -282,6 +316,10 @@ const struct button_mapping* get_context_mapping(int context)
         case CONTEXT_RECSCREEN:
             return button_context_recscreen;
 #endif
+#ifdef HAVE_USBSTACK
+        case CONTEXT_USB_HID:
+            return button_context_usb_hid;
+#endif
         default:
             return button_context_standard;
     } 
diff --git a/apps/keymaps/keymap-mr100.c b/apps/keymaps/keymap-mr100.c
index 8b7b74d..aff235a 100644
--- a/apps/keymaps/keymap-mr100.c
+++ b/apps/keymaps/keymap-mr100.c
@@ -313,6 +313,37 @@ static const struct button_mapping remote_button_context_tree[]  = {
     LAST_ITEM_IN_LIST__NEXTLIST(CONTEXT_STD)
 };
 
+#ifdef HAVE_USBSTACK
+static const struct button_mapping button_context_usb_hid[] = {
+    { ACTION_USB_HID_PLAY,     BUTTON_PLAY,                      BUTTON_NONE },
+    { ACTION_USB_HID_STOP,     BUTTON_POWER,                     BUTTON_NONE },
+    { ACTION_USB_HID_SKIPPREV, BUTTON_LEFT,                      BUTTON_NONE },
+    { ACTION_USB_HID_SKIPNEXT, BUTTON_RIGHT,                     BUTTON_NONE },
+    { ACTION_USB_HID_VOLUP,    BUTTON_UP,                        BUTTON_NONE },
+    { ACTION_USB_HID_VOLUP,    BUTTON_UP|BUTTON_REPEAT,          BUTTON_NONE },
+    { ACTION_USB_HID_VOLDOWN,  BUTTON_DOWN,                      BUTTON_NONE },
+    { ACTION_USB_HID_VOLDOWN,  BUTTON_DOWN|BUTTON_REPEAT,        BUTTON_NONE },
+    { ACTION_USB_HID_MUTE,     BUTTON_SELECT,                    BUTTON_NONE },
+    { ACTION_USB_HID_MENU,     BUTTON_MENU,                      BUTTON_NONE },
+
+    LAST_ITEM_IN_LIST
+}; /* button_context_usb_hid */
+
+static const struct button_mapping remote_button_context_usb_hid[] = {
+    { ACTION_USB_HID_PLAY,     BUTTON_RC_PLAY,                   BUTTON_NONE },
+    { ACTION_USB_HID_STOP,     BUTTON_RC_PLAY|BUTTON_REPEAT,     BUTTON_NONE },
+    { ACTION_USB_HID_SKIPPREV, BUTTON_RC_REW,                    BUTTON_NONE },
+    { ACTION_USB_HID_SKIPNEXT, BUTTON_RC_FF,                     BUTTON_NONE },
+    { ACTION_USB_HID_VOLUP,    BUTTON_RC_UP,                     BUTTON_NONE },
+    { ACTION_USB_HID_VOLUP,    BUTTON_RC_UP|BUTTON_REPEAT,       BUTTON_NONE },
+    { ACTION_USB_HID_VOLDOWN,  BUTTON_RC_DOWN,                   BUTTON_NONE },
+    { ACTION_USB_HID_VOLDOWN,  BUTTON_RC_DOWN|BUTTON_REPEAT,     BUTTON_NONE },
+    { ACTION_USB_HID_MENU,     BUTTON_RC_FAV,                    BUTTON_NONE },
+
+    LAST_ITEM_IN_LIST
+}; /* remote_button_context_usb_hid */
+#endif
+
 static const struct button_mapping* get_context_mapping_remote( int context )
 {
     context ^= CONTEXT_REMOTE;
@@ -324,6 +355,10 @@ static const struct button_mapping* get_context_mapping_remote( int context )
         case CONTEXT_MAINMENU:
         case CONTEXT_TREE:
             return remote_button_context_tree;
+#ifdef HAVE_USBSTACK
+        case CONTEXT_USB_HID:
+            return remote_button_context_usb_hid;
+#endif
     }
     return remote_button_context_standard;
 }
@@ -374,6 +409,10 @@ const struct button_mapping* get_context_mapping(int context)
             return button_context_pitchscreen;
         case CONTEXT_KEYBOARD:
             return button_context_keyboard;
+#ifdef HAVE_USBSTACK
+        case CONTEXT_USB_HID:
+            return button_context_usb_hid;
+#endif
     }
     return button_context_standard;
 }
diff --git a/apps/keymaps/keymap-ondavx747.c b/apps/keymaps/keymap-ondavx747.c
index 82fde82..0b7f1b3 100644
--- a/apps/keymaps/keymap-ondavx747.c
+++ b/apps/keymaps/keymap-ondavx747.c
@@ -152,6 +152,19 @@ static const struct button_mapping button_context_keyboard[]  = {
     LAST_ITEM_IN_LIST__NEXTLIST(CONTEXT_STD)
 }; /* button_context_keyboard */
 
+#ifdef HAVE_USBSTACK
+static const struct button_mapping button_context_usb_hid[] = {
+    { ACTION_USB_HID_VOLUP,    BUTTON_VOL_UP,                    BUTTON_NONE },
+    { ACTION_USB_HID_VOLUP,    BUTTON_VOL_UP|BUTTON_REPEAT,      BUTTON_NONE },
+    { ACTION_USB_HID_VOLDOWN,  BUTTON_VOL_DOWN,                  BUTTON_NONE },
+    { ACTION_USB_HID_VOLDOWN,  BUTTON_VOL_DOWN|BUTTON_REPEAT,    BUTTON_NONE },
+    { ACTION_USB_HID_MUTE,     BUTTON_POWER,                     BUTTON_NONE },
+    { ACTION_USB_HID_MENU,     BUTTON_MENU,                      BUTTON_NONE },
+
+    LAST_ITEM_IN_LIST
+}; /* button_context_usb_hid */
+#endif
+
 const struct button_mapping* target_get_context_mapping(int context)
 {
     switch (context)
@@ -196,6 +209,10 @@ const struct button_mapping* target_get_context_mapping(int context)
             return button_context_pitchscreen;
         case CONTEXT_KEYBOARD:
             return button_context_keyboard;
+#ifdef HAVE_USBSTACK
+        case CONTEXT_USB_HID:
+            return button_context_usb_hid;
+#endif
     }
     return button_context_standard;
 }
diff --git a/apps/keymaps/keymap-sa9200.c b/apps/keymaps/keymap-sa9200.c
index 478eea3..3091ec6 100644
--- a/apps/keymaps/keymap-sa9200.c
+++ b/apps/keymaps/keymap-sa9200.c
@@ -269,6 +269,27 @@ static const struct button_mapping button_context_keyboard[]  = {
     LAST_ITEM_IN_LIST
 }; /* button_context_keyboard */
 
+#ifdef HAVE_USBSTACK
+static const struct button_mapping button_context_usb_hid[] = {
+    { ACTION_USB_HID_PLAY,     BUTTON_RIGHT,                     BUTTON_NONE },
+    { ACTION_USB_HID_STOP,     BUTTON_POWER,                     BUTTON_NONE },
+    { ACTION_USB_HID_SKIPPREV, BUTTON_REW,                       BUTTON_NONE },
+    { ACTION_USB_HID_SKIPNEXT, BUTTON_FFWD,                      BUTTON_NONE },
+    { ACTION_USB_HID_VOLUP,    BUTTON_UP,                        BUTTON_NONE },
+    { ACTION_USB_HID_VOLUP,    BUTTON_UP|BUTTON_REPEAT,          BUTTON_NONE },
+    { ACTION_USB_HID_VOLUP,    BUTTON_VOL_UP,                    BUTTON_NONE },
+    { ACTION_USB_HID_VOLUP,    BUTTON_VOL_UP|BUTTON_REPEAT,      BUTTON_NONE },
+    { ACTION_USB_HID_VOLDOWN,  BUTTON_DOWN,                      BUTTON_NONE },
+    { ACTION_USB_HID_VOLDOWN,  BUTTON_DOWN|BUTTON_REPEAT,        BUTTON_NONE },
+    { ACTION_USB_HID_VOLDOWN,  BUTTON_VOL_DOWN,                  BUTTON_NONE },
+    { ACTION_USB_HID_VOLDOWN,  BUTTON_VOL_DOWN|BUTTON_REPEAT,    BUTTON_NONE },
+    { ACTION_USB_HID_MUTE,     BUTTON_SELECT,                    BUTTON_NONE },
+    { ACTION_USB_HID_MENU,     BUTTON_MENU,                      BUTTON_NONE },
+
+    LAST_ITEM_IN_LIST
+}; /* button_context_usb_hid */
+#endif
+
 const struct button_mapping* get_context_mapping(int context)
 {
     switch (context)
@@ -312,6 +333,10 @@ const struct button_mapping* get_context_mapping(int context)
             return button_context_pitchscreen;
         case CONTEXT_KEYBOARD:
             return button_context_keyboard;
+#ifdef HAVE_USBSTACK
+        case CONTEXT_USB_HID:
+            return button_context_usb_hid;
+#endif
     }
     return button_context_standard;
 }
diff --git a/apps/keymaps/keymap-touchscreen.c b/apps/keymaps/keymap-touchscreen.c
index ce5d01c..7000979 100644
--- a/apps/keymaps/keymap-touchscreen.c
+++ b/apps/keymaps/keymap-touchscreen.c
@@ -245,6 +245,18 @@ static const struct button_mapping button_context_radio[]  = {
     LAST_ITEM_IN_LIST__NEXTLIST(CONTEXT_CUSTOM2|CONTEXT_FM)
 }; /* button_context_radio */
 
+#ifdef HAVE_USBSTACK
+static const struct button_mapping button_context_usb_hid[] = {
+    { ACTION_USB_HID_PLAY,     BUTTON_TOPRIGHT,                  BUTTON_NONE },
+    { ACTION_USB_HID_SKIPPREV, BUTTON_MIDLEFT,                   BUTTON_NONE },
+    { ACTION_USB_HID_SKIPNEXT, BUTTON_MIDRIGHT,                  BUTTON_NONE },
+    { ACTION_USB_HID_MUTE,     BUTTON_CENTER,                    BUTTON_NONE },
+    { ACTION_USB_HID_MENU,     BUTTON_TOPLEFT,                   BUTTON_NONE },
+
+    LAST_ITEM_IN_LIST__NEXTLIST(CONTEXT_CUSTOM2|CONTEXT_USB_HID)
+}; /* button_context_usb_hid */
+#endif
+
 const struct button_mapping* get_context_mapping(int context)
 {
     if (context & CONTEXT_CUSTOM2
@@ -297,6 +309,10 @@ const struct button_mapping* get_context_mapping(int context)
             return button_context_pitchscreen;
         case CONTEXT_KEYBOARD:
             return button_context_keyboard;
+#ifdef HAVE_USBSTACK
+        case CONTEXT_USB_HID:
+            return button_context_usb_hid;
+#endif
     }
     return button_context_standard;
 }
diff --git a/apps/screens.c b/apps/screens.c
index 8c2b145..be7e29a 100644
--- a/apps/screens.c
+++ b/apps/screens.c
@@ -34,6 +34,12 @@
 #include "audio.h"
 #include "mp3_playback.h"
 #include "usb.h"
+#if defined(HAVE_USBSTACK)
+#include "usb_core.h"
+#ifdef USB_CLASS_HID
+#include "usbstack/usb_hid.h"
+#endif
+#endif
 #include "settings.h"
 #include "status.h"
 #include "playlist.h"
@@ -90,23 +96,70 @@ static int clamp_value_wrap(int value, int max, int min)
 #endif
 
 #ifndef SIMULATOR
-static int handle_usb_events(struct event_queue *q)
+static int handle_usb_events(void)
 {
-    struct queue_event ev;
     int next_update=0;
+#ifdef HAVE_TOUCHSCREEN
+    enum touchscreen_mode old_mode = touchscreen_get_mode();
+
+    /* TODO: Paint buttons on screens OR switch to point mode and use
+     * touchscreen as a touchpad to move the host's mouse cursor */
+    touchscreen_set_mode(TOUCHSCREEN_BUTTON);
+#endif
 
     /* Don't return until we get SYS_USB_DISCONNECTED or SYS_TIMEOUT */
     while(1)
     {
-        queue_wait_w_tmo(q, &ev, HZ/4);
-        switch(ev.id)
+        int button;
+#if defined(HAVE_USBSTACK) && defined(USB_CLASS_HID)
+        bool hid_enabled = usb_core_driver_enabled(USB_DRIVER_HID);
+
+        if (hid_enabled)
+        {
+            consumer_usage_page_t cmd = UNASSIGNED;
+            button = get_action(CONTEXT_USB_HID, HZ/4);
+
+            switch (button)
+            {
+                case ACTION_USB_HID_PLAY:
+                    cmd = PLAY_PAUSE;
+                    break;
+                case ACTION_USB_HID_STOP:
+                    cmd = STOP;
+                    break;
+                case ACTION_USB_HID_SKIPPREV:
+                    cmd = SCAN_PREVIOUS_TRACK;
+                    break;
+                case ACTION_USB_HID_SKIPNEXT:
+                    cmd = SCAN_NEXT_TRACK;
+                    break;
+                case ACTION_USB_HID_VOLDOWN:
+                    cmd = VOLUME_DECREMENT;
+                    break;
+                case ACTION_USB_HID_VOLUP:
+                    cmd = VOLUME_INCREMENT;
+                    break;
+                case ACTION_USB_HID_MUTE:
+                    cmd = MUTE;
+                    break;
+            }
+
+            if (cmd != UNASSIGNED)
+                usb_hid_send_consumer_usage(cmd);
+        }
+        else
+#endif
+            button = button_get_w_tmo(HZ/4);
+
+        switch(button)
         {
             case SYS_USB_DISCONNECTED:
                 usb_acknowledge(SYS_USB_DISCONNECTED_ACK);
-                return 0;
+                goto Exit;
             case SYS_TIMEOUT:
                 break;
         }
+
         if(TIME_AFTER(current_tick,next_update))
         {
             if(usb_inserted()) {
@@ -118,6 +171,11 @@ static int handle_usb_events(struct event_queue *q)
             next_update=current_tick+HZ/2;
         }
     }
+Exit:
+#ifdef HAVE_TOUCHSCREEN
+    touchscreen_set_mode(old_mode);
+#endif
+    return 0;
 }
 #endif
 
@@ -172,7 +230,7 @@ void usb_screen(void)
     while (button_get(true) & BUTTON_REL);
 #else
     usb_acknowledge(SYS_USB_CONNECTED_ACK);
-    while(handle_usb_events(&button_queue));
+    while (handle_usb_events());
 #endif /* SIMULATOR */
 #ifdef HAVE_LCD_CHARCELLS
     status_set_usb(false);