| 0,0 → 1,180 |
|---|
| ; HID multimedia keyboard driver, part of USBHID driver. |
| |
| ; Global constants. |
| ; They are assembled in a macro to separate code and data; |
| ; the code is located at the point of "include 'multimedia.inc'", |
| ; the data are collected when workers_globals is instantiated. |
| macro workers_globals |
| { |
| ; include global constants from previous workers |
| workers_globals |
| align 4 |
| ; Callbacks for HID layer. |
| multimedia_driver: |
| dd multimedia_driver_add_device |
| dd multimedia_driver_disconnect |
| dd multimedia_driver_begin_packet |
| dd multimedia_driver_array_overflow? |
| dd multimedia_driver_input_field |
| dd multimedia_driver_end_packet |
| } |
| |
| ; Data that are specific for one keyboard device. |
| struct multimedia_device_data |
| usbdev dd ? ; pointer to device_data of USB and HID layers |
| last_pressed dd ? |
| ends |
| |
| ; This procedure is called when HID layer detects a new keyboard. |
| ; in: ebx -> usb_device_data, edi -> collection |
| ; out: eax = device-specific data or NULL on error |
| proc multimedia_driver_add_device |
| ; 1. Allocate memory for keyboard_device_data. If failed, return NULL. |
| movi eax, sizeof.multimedia_device_data |
| invoke Kmalloc |
| test eax, eax |
| jz .nothing |
| ; 2. Initialize keyboard_device_data: store pointer to USB layer data, |
| ; zero some fields, initialize bit positions to -1. |
| mov [eax+multimedia_device_data.usbdev], ebx |
| mov [eax+multimedia_device_data.last_pressed], 0 |
| .nothing: |
| ret |
| endp |
| |
| ; This procedure is called when HID layer detects disconnect of a previously |
| ; connected keyboard. |
| ; in: edi -> multimedia_device_data (pointer returned from multimedia_driver_add_device) |
| proc multimedia_driver_disconnect |
| ; We should free data in CloseKeyboard, not here. |
| ret |
| endp |
| |
| ; This procedure is called when HID layer starts processing a new input packet |
| ; from a keyboard. |
| ; in: edi -> keyboard_device_data (pointer returned from keyboard_driver_add_device) |
| proc multimedia_driver_begin_packet |
| ; Nothing to do. |
| ret |
| endp |
| |
| ; This procedure is called when HID layer processes every non-empty array field group. |
| ; in: edi -> keyboard_device_data (pointer returned from keyboard_driver_add_device) |
| ; in: ecx = fields count (always nonzero), edx = pointer to fields values |
| ; in: esi -> report_field_group |
| ; out: CF set => group is ok, CF cleared => group should be ignored |
| proc multimedia_driver_array_overflow? |
| ; The keyboard signals array overflow by filling the entire array with |
| ; USAGE_KBD_ROLLOVER codes. |
| mov eax, [edx] ; eax = first field in the array |
| sub eax, USAGE_KBD_ROLLOVER ; eax = 0 if overflow, nonzero otherwise |
| neg eax ; CF cleared if eax was zero, CF set if eax was nonzero |
| ret |
| endp |
| |
| ; This procedure is called from HID layer for every field. |
| ; in: edi -> keyboard_device_data (pointer returned from keyboard_driver_add_device) |
| ; in: ecx = field usage, edx = value, esi -> report_field_group |
| proc multimedia_driver_input_field |
| if HID_DUMP_UNCLAIMED |
| .unclaimed = default_driver_input_field |
| end if |
| |
| test edx, edx |
| jnz @f |
| cmp [edi+multimedia_device_data.last_pressed], ecx |
| jne .nothing |
| @@: |
| mov eax, 0x19 |
| cmp ecx, USAGE_CONSUMER + 0xB5 ; Next track |
| je .multimedia_key |
| mov al, 0x10 |
| cmp ecx, USAGE_CONSUMER + 0xB6 ; Previous track |
| je .multimedia_key |
| mov al, 0x24 |
| cmp ecx, USAGE_CONSUMER + 0xB7 ; Stop |
| je .multimedia_key |
| mov al, 0x22 |
| cmp ecx, USAGE_CONSUMER + 0xCD ; Play/pause |
| je .multimedia_key |
| mov al, 0x20 |
| cmp ecx, USAGE_CONSUMER + 0xE2 ; Mute |
| je .multimedia_key |
| mov al, 0x30 |
| cmp ecx, USAGE_CONSUMER + 0xE9 ; Volume up |
| je .multimedia_key |
| mov al, 0x2E |
| cmp ecx, USAGE_CONSUMER + 0xEA ; Volume down |
| je .multimedia_key |
| mov al, 0x6D |
| cmp ecx, USAGE_CONSUMER + 0x183 ; Media select |
| je .multimedia_key |
| mov al, 0x6C |
| cmp ecx, USAGE_CONSUMER + 0x18A ; E-Mail |
| je .multimedia_key |
| mov al, 0x21 |
| cmp ecx, USAGE_CONSUMER + 0x192 ; Calculator |
| je .multimedia_key |
| mov al, 0x6B |
| cmp ecx, USAGE_CONSUMER + 0x194 ; My computer |
| je .multimedia_key |
| mov al, 0x65 |
| cmp ecx, USAGE_CONSUMER + 0x221 ; WWW Search |
| je .multimedia_key |
| mov al, 0x32 |
| cmp ecx, USAGE_CONSUMER + 0x223 ; WWW Home |
| je .multimedia_key |
| mov al, 0x6a |
| cmp ecx, USAGE_CONSUMER + 0x224 ; WWW Back |
| je .multimedia_key |
| mov al, 0x69 |
| cmp ecx, USAGE_CONSUMER + 0x225 ; WWW forward |
| je .multimedia_key |
| mov al, 0x68 |
| cmp ecx, USAGE_CONSUMER + 0x226 ; WWW Stop |
| je .multimedia_key |
| mov al, 0x67 |
| cmp ecx, USAGE_CONSUMER + 0x227 ; WWW refresh |
| je .multimedia_key |
| mov al, 0x66 |
| cmp ecx, USAGE_CONSUMER + 0x22A ; WWW favorites |
| je .multimedia_key |
| jmp .unclaimed |
| |
| |
| .multimedia_key: |
| ; 1d. Further actions are slightly different for key press and key release. |
| ; Decide what to do. |
| test edx, edx |
| jz .multimedia_key_released |
| .multimedia_key_pressed: |
| ; The key is pressed. |
| push ecx |
| mov ecx, 0xE0 |
| invoke SetKeyboardData |
| pop ecx |
| invoke SetKeyboardData |
| ret |
| |
| .multimedia_key_released: |
| mov [edi+multimedia_device_data.last_pressed], 0 |
| ; The key is released. |
| or cl, 0x80 |
| push ecx |
| mov ecx, 0xE0 |
| invoke SetKeyboardData |
| pop ecx |
| invoke SetKeyboardData |
| ret |
| .nothing: |
| ret |
| |
| endp |
| |
| ; This procedure is called when HID layer ends processing a new input packet |
| ; from a keyboard. |
| ; in: edi -> keyboard_device_data (pointer returned from keyboard_driver_add_device) |
| proc multimedia_driver_end_packet |
| ; Nothing to do. |
| ret |
| endp |