686 lines
22 KiB
C
686 lines
22 KiB
C
/*
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* QEMU Baum Braille Device
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*
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* Copyright (c) 2008, 2010-2011, 2016-2017 Samuel Thibault
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "qemu/osdep.h"
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#include "qapi/error.h"
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#include "chardev/char.h"
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#include "qemu/main-loop.h"
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#include "qemu/module.h"
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#include "qemu/timer.h"
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#include "hw/usb.h"
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#include "ui/console.h"
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#include <brlapi.h>
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#include <brlapi_constants.h>
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#include <brlapi_keycodes.h>
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#if 0
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#define DPRINTF(fmt, ...) \
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printf(fmt, ## __VA_ARGS__)
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#else
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#define DPRINTF(fmt, ...)
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#endif
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#define ESC 0x1B
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#define BAUM_REQ_DisplayData 0x01
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#define BAUM_REQ_GetVersionNumber 0x05
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#define BAUM_REQ_GetKeys 0x08
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#define BAUM_REQ_SetMode 0x12
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#define BAUM_REQ_SetProtocol 0x15
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#define BAUM_REQ_GetDeviceIdentity 0x84
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#define BAUM_REQ_GetSerialNumber 0x8A
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#define BAUM_RSP_CellCount 0x01
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#define BAUM_RSP_VersionNumber 0x05
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#define BAUM_RSP_ModeSetting 0x11
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#define BAUM_RSP_CommunicationChannel 0x16
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#define BAUM_RSP_PowerdownSignal 0x17
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#define BAUM_RSP_HorizontalSensors 0x20
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#define BAUM_RSP_VerticalSensors 0x21
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#define BAUM_RSP_RoutingKeys 0x22
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#define BAUM_RSP_Switches 0x23
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#define BAUM_RSP_TopKeys 0x24
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#define BAUM_RSP_HorizontalSensor 0x25
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#define BAUM_RSP_VerticalSensor 0x26
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#define BAUM_RSP_RoutingKey 0x27
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#define BAUM_RSP_FrontKeys6 0x28
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#define BAUM_RSP_BackKeys6 0x29
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#define BAUM_RSP_CommandKeys 0x2B
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#define BAUM_RSP_FrontKeys10 0x2C
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#define BAUM_RSP_BackKeys10 0x2D
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#define BAUM_RSP_EntryKeys 0x33
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#define BAUM_RSP_JoyStick 0x34
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#define BAUM_RSP_ErrorCode 0x40
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#define BAUM_RSP_InfoBlock 0x42
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#define BAUM_RSP_DeviceIdentity 0x84
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#define BAUM_RSP_SerialNumber 0x8A
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#define BAUM_RSP_BluetoothName 0x8C
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#define BAUM_TL1 0x01
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#define BAUM_TL2 0x02
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#define BAUM_TL3 0x04
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#define BAUM_TR1 0x08
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#define BAUM_TR2 0x10
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#define BAUM_TR3 0x20
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#define BUF_SIZE 256
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typedef struct {
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Chardev parent;
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brlapi_handle_t *brlapi;
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int brlapi_fd;
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unsigned int x, y;
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bool deferred_init;
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uint8_t in_buf[BUF_SIZE];
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uint8_t in_buf_used;
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uint8_t out_buf[BUF_SIZE];
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uint8_t out_buf_used, out_buf_ptr;
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QEMUTimer *cellCount_timer;
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} BaumChardev;
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#define TYPE_CHARDEV_BRAILLE "chardev-braille"
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#define BAUM_CHARDEV(obj) OBJECT_CHECK(BaumChardev, (obj), TYPE_CHARDEV_BRAILLE)
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/* Let's assume NABCC by default */
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enum way {
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DOTS2ASCII,
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ASCII2DOTS
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};
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static const uint8_t nabcc_translation[2][256] = {
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#ifndef BRLAPI_DOTS
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#define BRLAPI_DOTS(d1,d2,d3,d4,d5,d6,d7,d8) \
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((d1?BRLAPI_DOT1:0)|\
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(d2?BRLAPI_DOT2:0)|\
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(d3?BRLAPI_DOT3:0)|\
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(d4?BRLAPI_DOT4:0)|\
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(d5?BRLAPI_DOT5:0)|\
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(d6?BRLAPI_DOT6:0)|\
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(d7?BRLAPI_DOT7:0)|\
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(d8?BRLAPI_DOT8:0))
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#endif
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#define DO(dots, ascii) \
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[DOTS2ASCII][dots] = ascii, \
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[ASCII2DOTS][ascii] = dots
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DO(0, ' '),
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DO(BRLAPI_DOTS(1, 0, 0, 0, 0, 0, 0, 0), 'a'),
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DO(BRLAPI_DOTS(1, 1, 0, 0, 0, 0, 0, 0), 'b'),
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DO(BRLAPI_DOTS(1, 0, 0, 1, 0, 0, 0, 0), 'c'),
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DO(BRLAPI_DOTS(1, 0, 0, 1, 1, 0, 0, 0), 'd'),
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DO(BRLAPI_DOTS(1, 0, 0, 0, 1, 0, 0, 0), 'e'),
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DO(BRLAPI_DOTS(1, 1, 0, 1, 0, 0, 0, 0), 'f'),
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DO(BRLAPI_DOTS(1, 1, 0, 1, 1, 0, 0, 0), 'g'),
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DO(BRLAPI_DOTS(1, 1, 0, 0, 1, 0, 0, 0), 'h'),
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DO(BRLAPI_DOTS(0, 1, 0, 1, 0, 0, 0, 0), 'i'),
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DO(BRLAPI_DOTS(0, 1, 0, 1, 1, 0, 0, 0), 'j'),
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DO(BRLAPI_DOTS(1, 0, 1, 0, 0, 0, 0, 0), 'k'),
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DO(BRLAPI_DOTS(1, 1, 1, 0, 0, 0, 0, 0), 'l'),
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DO(BRLAPI_DOTS(1, 0, 1, 1, 0, 0, 0, 0), 'm'),
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DO(BRLAPI_DOTS(1, 0, 1, 1, 1, 0, 0, 0), 'n'),
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DO(BRLAPI_DOTS(1, 0, 1, 0, 1, 0, 0, 0), 'o'),
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DO(BRLAPI_DOTS(1, 1, 1, 1, 0, 0, 0, 0), 'p'),
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DO(BRLAPI_DOTS(1, 1, 1, 1, 1, 0, 0, 0), 'q'),
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DO(BRLAPI_DOTS(1, 1, 1, 0, 1, 0, 0, 0), 'r'),
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DO(BRLAPI_DOTS(0, 1, 1, 1, 0, 0, 0, 0), 's'),
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DO(BRLAPI_DOTS(0, 1, 1, 1, 1, 0, 0, 0), 't'),
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DO(BRLAPI_DOTS(1, 0, 1, 0, 0, 1, 0, 0), 'u'),
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DO(BRLAPI_DOTS(1, 1, 1, 0, 0, 1, 0, 0), 'v'),
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DO(BRLAPI_DOTS(0, 1, 0, 1, 1, 1, 0, 0), 'w'),
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DO(BRLAPI_DOTS(1, 0, 1, 1, 0, 1, 0, 0), 'x'),
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DO(BRLAPI_DOTS(1, 0, 1, 1, 1, 1, 0, 0), 'y'),
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DO(BRLAPI_DOTS(1, 0, 1, 0, 1, 1, 0, 0), 'z'),
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DO(BRLAPI_DOTS(1, 0, 0, 0, 0, 0, 1, 0), 'A'),
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DO(BRLAPI_DOTS(1, 1, 0, 0, 0, 0, 1, 0), 'B'),
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DO(BRLAPI_DOTS(1, 0, 0, 1, 0, 0, 1, 0), 'C'),
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DO(BRLAPI_DOTS(1, 0, 0, 1, 1, 0, 1, 0), 'D'),
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DO(BRLAPI_DOTS(1, 0, 0, 0, 1, 0, 1, 0), 'E'),
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DO(BRLAPI_DOTS(1, 1, 0, 1, 0, 0, 1, 0), 'F'),
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DO(BRLAPI_DOTS(1, 1, 0, 1, 1, 0, 1, 0), 'G'),
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DO(BRLAPI_DOTS(1, 1, 0, 0, 1, 0, 1, 0), 'H'),
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DO(BRLAPI_DOTS(0, 1, 0, 1, 0, 0, 1, 0), 'I'),
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DO(BRLAPI_DOTS(0, 1, 0, 1, 1, 0, 1, 0), 'J'),
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DO(BRLAPI_DOTS(1, 0, 1, 0, 0, 0, 1, 0), 'K'),
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DO(BRLAPI_DOTS(1, 1, 1, 0, 0, 0, 1, 0), 'L'),
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DO(BRLAPI_DOTS(1, 0, 1, 1, 0, 0, 1, 0), 'M'),
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DO(BRLAPI_DOTS(1, 0, 1, 1, 1, 0, 1, 0), 'N'),
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DO(BRLAPI_DOTS(1, 0, 1, 0, 1, 0, 1, 0), 'O'),
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DO(BRLAPI_DOTS(1, 1, 1, 1, 0, 0, 1, 0), 'P'),
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DO(BRLAPI_DOTS(1, 1, 1, 1, 1, 0, 1, 0), 'Q'),
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DO(BRLAPI_DOTS(1, 1, 1, 0, 1, 0, 1, 0), 'R'),
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DO(BRLAPI_DOTS(0, 1, 1, 1, 0, 0, 1, 0), 'S'),
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DO(BRLAPI_DOTS(0, 1, 1, 1, 1, 0, 1, 0), 'T'),
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DO(BRLAPI_DOTS(1, 0, 1, 0, 0, 1, 1, 0), 'U'),
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DO(BRLAPI_DOTS(1, 1, 1, 0, 0, 1, 1, 0), 'V'),
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DO(BRLAPI_DOTS(0, 1, 0, 1, 1, 1, 1, 0), 'W'),
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DO(BRLAPI_DOTS(1, 0, 1, 1, 0, 1, 1, 0), 'X'),
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DO(BRLAPI_DOTS(1, 0, 1, 1, 1, 1, 1, 0), 'Y'),
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DO(BRLAPI_DOTS(1, 0, 1, 0, 1, 1, 1, 0), 'Z'),
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DO(BRLAPI_DOTS(0, 0, 1, 0, 1, 1, 0, 0), '0'),
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DO(BRLAPI_DOTS(0, 1, 0, 0, 0, 0, 0, 0), '1'),
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DO(BRLAPI_DOTS(0, 1, 1, 0, 0, 0, 0, 0), '2'),
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DO(BRLAPI_DOTS(0, 1, 0, 0, 1, 0, 0, 0), '3'),
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DO(BRLAPI_DOTS(0, 1, 0, 0, 1, 1, 0, 0), '4'),
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DO(BRLAPI_DOTS(0, 1, 0, 0, 0, 1, 0, 0), '5'),
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DO(BRLAPI_DOTS(0, 1, 1, 0, 1, 0, 0, 0), '6'),
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DO(BRLAPI_DOTS(0, 1, 1, 0, 1, 1, 0, 0), '7'),
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DO(BRLAPI_DOTS(0, 1, 1, 0, 0, 1, 0, 0), '8'),
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DO(BRLAPI_DOTS(0, 0, 1, 0, 1, 0, 0, 0), '9'),
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DO(BRLAPI_DOTS(0, 0, 0, 1, 0, 1, 0, 0), '.'),
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DO(BRLAPI_DOTS(0, 0, 1, 1, 0, 1, 0, 0), '+'),
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DO(BRLAPI_DOTS(0, 0, 1, 0, 0, 1, 0, 0), '-'),
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DO(BRLAPI_DOTS(1, 0, 0, 0, 0, 1, 0, 0), '*'),
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DO(BRLAPI_DOTS(0, 0, 1, 1, 0, 0, 0, 0), '/'),
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DO(BRLAPI_DOTS(1, 1, 1, 0, 1, 1, 0, 0), '('),
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DO(BRLAPI_DOTS(0, 1, 1, 1, 1, 1, 0, 0), ')'),
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DO(BRLAPI_DOTS(1, 1, 1, 1, 0, 1, 0, 0), '&'),
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DO(BRLAPI_DOTS(0, 0, 1, 1, 1, 1, 0, 0), '#'),
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DO(BRLAPI_DOTS(0, 0, 0, 0, 0, 1, 0, 0), ','),
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DO(BRLAPI_DOTS(0, 0, 0, 0, 1, 1, 0, 0), ';'),
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DO(BRLAPI_DOTS(1, 0, 0, 0, 1, 1, 0, 0), ':'),
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DO(BRLAPI_DOTS(0, 1, 1, 1, 0, 1, 0, 0), '!'),
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DO(BRLAPI_DOTS(1, 0, 0, 1, 1, 1, 0, 0), '?'),
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DO(BRLAPI_DOTS(0, 0, 0, 0, 1, 0, 0, 0), '"'),
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DO(BRLAPI_DOTS(0, 0, 1, 0, 0, 0, 0, 0), '\''),
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DO(BRLAPI_DOTS(0, 0, 0, 1, 0, 0, 0, 0), '`'),
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DO(BRLAPI_DOTS(0, 0, 0, 1, 1, 0, 1, 0), '^'),
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DO(BRLAPI_DOTS(0, 0, 0, 1, 1, 0, 0, 0), '~'),
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DO(BRLAPI_DOTS(0, 1, 0, 1, 0, 1, 1, 0), '['),
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DO(BRLAPI_DOTS(1, 1, 0, 1, 1, 1, 1, 0), ']'),
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DO(BRLAPI_DOTS(0, 1, 0, 1, 0, 1, 0, 0), '{'),
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DO(BRLAPI_DOTS(1, 1, 0, 1, 1, 1, 0, 0), '}'),
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DO(BRLAPI_DOTS(1, 1, 1, 1, 1, 1, 0, 0), '='),
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DO(BRLAPI_DOTS(1, 1, 0, 0, 0, 1, 0, 0), '<'),
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DO(BRLAPI_DOTS(0, 0, 1, 1, 1, 0, 0, 0), '>'),
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DO(BRLAPI_DOTS(1, 1, 0, 1, 0, 1, 0, 0), '$'),
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DO(BRLAPI_DOTS(1, 0, 0, 1, 0, 1, 0, 0), '%'),
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DO(BRLAPI_DOTS(0, 0, 0, 1, 0, 0, 1, 0), '@'),
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DO(BRLAPI_DOTS(1, 1, 0, 0, 1, 1, 0, 0), '|'),
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DO(BRLAPI_DOTS(1, 1, 0, 0, 1, 1, 1, 0), '\\'),
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DO(BRLAPI_DOTS(0, 0, 0, 1, 1, 1, 0, 0), '_'),
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};
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/* The guest OS has started discussing with us, finish initializing BrlAPI */
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static int baum_deferred_init(BaumChardev *baum)
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{
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int tty = BRLAPI_TTY_DEFAULT;
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QemuConsole *con;
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if (baum->deferred_init) {
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return 1;
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}
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if (brlapi__getDisplaySize(baum->brlapi, &baum->x, &baum->y) == -1) {
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brlapi_perror("baum: brlapi__getDisplaySize");
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return 0;
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}
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if (baum->y > 1) {
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baum->y = 1;
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}
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if (baum->x > 84) {
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baum->x = 84;
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}
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con = qemu_console_lookup_by_index(0);
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if (con && qemu_console_is_graphic(con)) {
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tty = qemu_console_get_window_id(con);
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if (tty == -1)
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tty = BRLAPI_TTY_DEFAULT;
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}
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if (brlapi__enterTtyMode(baum->brlapi, tty, NULL) == -1) {
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brlapi_perror("baum: brlapi__enterTtyMode");
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return 0;
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}
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baum->deferred_init = 1;
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return 1;
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}
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/* The serial port can receive more of our data */
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static void baum_chr_accept_input(struct Chardev *chr)
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{
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BaumChardev *baum = BAUM_CHARDEV(chr);
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int room, first;
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if (!baum->out_buf_used)
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return;
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room = qemu_chr_be_can_write(chr);
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if (!room)
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return;
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if (room > baum->out_buf_used)
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room = baum->out_buf_used;
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first = BUF_SIZE - baum->out_buf_ptr;
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if (room > first) {
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qemu_chr_be_write(chr, baum->out_buf + baum->out_buf_ptr, first);
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baum->out_buf_ptr = 0;
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baum->out_buf_used -= first;
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room -= first;
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}
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qemu_chr_be_write(chr, baum->out_buf + baum->out_buf_ptr, room);
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baum->out_buf_ptr += room;
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baum->out_buf_used -= room;
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}
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/* We want to send a packet */
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static void baum_write_packet(BaumChardev *baum, const uint8_t *buf, int len)
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{
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Chardev *chr = CHARDEV(baum);
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uint8_t io_buf[1 + 2 * len], *cur = io_buf;
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int room;
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*cur++ = ESC;
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while (len--)
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if ((*cur++ = *buf++) == ESC)
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*cur++ = ESC;
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room = qemu_chr_be_can_write(chr);
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len = cur - io_buf;
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if (len <= room) {
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/* Fits */
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qemu_chr_be_write(chr, io_buf, len);
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} else {
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int first;
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uint8_t out;
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/* Can't fit all, send what can be, and store the rest. */
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qemu_chr_be_write(chr, io_buf, room);
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len -= room;
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cur = io_buf + room;
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if (len > BUF_SIZE - baum->out_buf_used) {
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/* Can't even store it, drop the previous data... */
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assert(len <= BUF_SIZE);
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baum->out_buf_used = 0;
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baum->out_buf_ptr = 0;
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}
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out = baum->out_buf_ptr;
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baum->out_buf_used += len;
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first = BUF_SIZE - baum->out_buf_ptr;
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if (len > first) {
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memcpy(baum->out_buf + out, cur, first);
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out = 0;
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len -= first;
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cur += first;
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}
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memcpy(baum->out_buf + out, cur, len);
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}
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}
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/* Called when the other end seems to have a wrong idea of our display size */
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static void baum_cellCount_timer_cb(void *opaque)
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{
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BaumChardev *baum = BAUM_CHARDEV(opaque);
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uint8_t cell_count[] = { BAUM_RSP_CellCount, baum->x * baum->y };
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DPRINTF("Timeout waiting for DisplayData, sending cell count\n");
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baum_write_packet(baum, cell_count, sizeof(cell_count));
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}
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/* Try to interpret a whole incoming packet */
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static int baum_eat_packet(BaumChardev *baum, const uint8_t *buf, int len)
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{
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const uint8_t *cur = buf;
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uint8_t req = 0;
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if (!len--)
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return 0;
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if (*cur++ != ESC) {
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while (*cur != ESC) {
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if (!len--)
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return 0;
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cur++;
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}
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DPRINTF("Dropped %td bytes!\n", cur - buf);
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}
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#define EAT(c) do {\
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if (!len--) \
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return 0; \
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if ((c = *cur++) == ESC) { \
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if (!len--) \
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return 0; \
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if (*cur++ != ESC) { \
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DPRINTF("Broken packet %#2x, tossing\n", req); \
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if (timer_pending(baum->cellCount_timer)) { \
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timer_del(baum->cellCount_timer); \
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baum_cellCount_timer_cb(baum); \
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} \
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return (cur - 2 - buf); \
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} \
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} \
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} while (0)
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EAT(req);
|
|
switch (req) {
|
|
case BAUM_REQ_DisplayData:
|
|
{
|
|
uint8_t cells[baum->x * baum->y], c;
|
|
uint8_t text[baum->x * baum->y];
|
|
uint8_t zero[baum->x * baum->y];
|
|
int cursor = BRLAPI_CURSOR_OFF;
|
|
int i;
|
|
|
|
/* Allow 100ms to complete the DisplayData packet */
|
|
timer_mod(baum->cellCount_timer, qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) +
|
|
NANOSECONDS_PER_SECOND / 10);
|
|
for (i = 0; i < baum->x * baum->y ; i++) {
|
|
EAT(c);
|
|
cells[i] = c;
|
|
if ((c & (BRLAPI_DOT7|BRLAPI_DOT8))
|
|
== (BRLAPI_DOT7|BRLAPI_DOT8)) {
|
|
cursor = i + 1;
|
|
c &= ~(BRLAPI_DOT7|BRLAPI_DOT8);
|
|
}
|
|
c = nabcc_translation[DOTS2ASCII][c];
|
|
if (!c) {
|
|
c = '?';
|
|
}
|
|
text[i] = c;
|
|
}
|
|
timer_del(baum->cellCount_timer);
|
|
|
|
memset(zero, 0, sizeof(zero));
|
|
|
|
brlapi_writeArguments_t wa = {
|
|
.displayNumber = BRLAPI_DISPLAY_DEFAULT,
|
|
.regionBegin = 1,
|
|
.regionSize = baum->x * baum->y,
|
|
.text = (char *)text,
|
|
.textSize = baum->x * baum->y,
|
|
.andMask = zero,
|
|
.orMask = cells,
|
|
.cursor = cursor,
|
|
.charset = (char *)"ISO-8859-1",
|
|
};
|
|
|
|
if (brlapi__write(baum->brlapi, &wa) == -1)
|
|
brlapi_perror("baum brlapi_write");
|
|
break;
|
|
}
|
|
case BAUM_REQ_SetMode:
|
|
{
|
|
uint8_t mode, setting;
|
|
DPRINTF("SetMode\n");
|
|
EAT(mode);
|
|
EAT(setting);
|
|
/* ignore */
|
|
break;
|
|
}
|
|
case BAUM_REQ_SetProtocol:
|
|
{
|
|
uint8_t protocol;
|
|
DPRINTF("SetProtocol\n");
|
|
EAT(protocol);
|
|
/* ignore */
|
|
break;
|
|
}
|
|
case BAUM_REQ_GetDeviceIdentity:
|
|
{
|
|
uint8_t identity[17] = { BAUM_RSP_DeviceIdentity,
|
|
'B','a','u','m',' ','V','a','r','i','o' };
|
|
DPRINTF("GetDeviceIdentity\n");
|
|
identity[11] = '0' + baum->x / 10;
|
|
identity[12] = '0' + baum->x % 10;
|
|
baum_write_packet(baum, identity, sizeof(identity));
|
|
break;
|
|
}
|
|
case BAUM_REQ_GetVersionNumber:
|
|
{
|
|
uint8_t version[] = { BAUM_RSP_VersionNumber, 1 }; /* ? */
|
|
DPRINTF("GetVersionNumber\n");
|
|
baum_write_packet(baum, version, sizeof(version));
|
|
break;
|
|
}
|
|
case BAUM_REQ_GetSerialNumber:
|
|
{
|
|
uint8_t serial[] = { BAUM_RSP_SerialNumber,
|
|
'0','0','0','0','0','0','0','0' };
|
|
DPRINTF("GetSerialNumber\n");
|
|
baum_write_packet(baum, serial, sizeof(serial));
|
|
break;
|
|
}
|
|
case BAUM_REQ_GetKeys:
|
|
{
|
|
DPRINTF("Get%0#2x\n", req);
|
|
/* ignore */
|
|
break;
|
|
}
|
|
default:
|
|
DPRINTF("unrecognized request %0#2x\n", req);
|
|
do
|
|
if (!len--)
|
|
return 0;
|
|
while (*cur++ != ESC);
|
|
cur--;
|
|
break;
|
|
}
|
|
return cur - buf;
|
|
}
|
|
|
|
/* The other end is writing some data. Store it and try to interpret */
|
|
static int baum_chr_write(Chardev *chr, const uint8_t *buf, int len)
|
|
{
|
|
BaumChardev *baum = BAUM_CHARDEV(chr);
|
|
int tocopy, cur, eaten, orig_len = len;
|
|
|
|
if (!len)
|
|
return 0;
|
|
if (!baum->brlapi)
|
|
return len;
|
|
if (!baum_deferred_init(baum))
|
|
return len;
|
|
|
|
while (len) {
|
|
/* Complete our buffer as much as possible */
|
|
tocopy = len;
|
|
if (tocopy > BUF_SIZE - baum->in_buf_used)
|
|
tocopy = BUF_SIZE - baum->in_buf_used;
|
|
|
|
memcpy(baum->in_buf + baum->in_buf_used, buf, tocopy);
|
|
baum->in_buf_used += tocopy;
|
|
buf += tocopy;
|
|
len -= tocopy;
|
|
|
|
/* Interpret it as much as possible */
|
|
cur = 0;
|
|
while (cur < baum->in_buf_used &&
|
|
(eaten = baum_eat_packet(baum, baum->in_buf + cur, baum->in_buf_used - cur)))
|
|
cur += eaten;
|
|
|
|
/* Shift the remainder */
|
|
if (cur) {
|
|
memmove(baum->in_buf, baum->in_buf + cur, baum->in_buf_used - cur);
|
|
baum->in_buf_used -= cur;
|
|
}
|
|
|
|
/* And continue if any data left */
|
|
}
|
|
return orig_len;
|
|
}
|
|
|
|
/* Send the key code to the other end */
|
|
static void baum_send_key(BaumChardev *baum, uint8_t type, uint8_t value)
|
|
{
|
|
uint8_t packet[] = { type, value };
|
|
DPRINTF("writing key %x %x\n", type, value);
|
|
baum_write_packet(baum, packet, sizeof(packet));
|
|
}
|
|
|
|
static void baum_send_key2(BaumChardev *baum, uint8_t type, uint8_t value,
|
|
uint8_t value2)
|
|
{
|
|
uint8_t packet[] = { type, value, value2 };
|
|
DPRINTF("writing key %x %x\n", type, value);
|
|
baum_write_packet(baum, packet, sizeof(packet));
|
|
}
|
|
|
|
/* We got some data on the BrlAPI socket */
|
|
static void baum_chr_read(void *opaque)
|
|
{
|
|
BaumChardev *baum = BAUM_CHARDEV(opaque);
|
|
brlapi_keyCode_t code;
|
|
int ret;
|
|
if (!baum->brlapi)
|
|
return;
|
|
if (!baum_deferred_init(baum))
|
|
return;
|
|
while ((ret = brlapi__readKey(baum->brlapi, 0, &code)) == 1) {
|
|
DPRINTF("got key %"BRLAPI_PRIxKEYCODE"\n", code);
|
|
/* Emulate */
|
|
switch (code & BRLAPI_KEY_TYPE_MASK) {
|
|
case BRLAPI_KEY_TYPE_CMD:
|
|
switch (code & BRLAPI_KEY_CMD_BLK_MASK) {
|
|
case BRLAPI_KEY_CMD_ROUTE:
|
|
baum_send_key(baum, BAUM_RSP_RoutingKey, (code & BRLAPI_KEY_CMD_ARG_MASK)+1);
|
|
baum_send_key(baum, BAUM_RSP_RoutingKey, 0);
|
|
break;
|
|
case 0:
|
|
switch (code & BRLAPI_KEY_CMD_ARG_MASK) {
|
|
case BRLAPI_KEY_CMD_FWINLT:
|
|
baum_send_key(baum, BAUM_RSP_TopKeys, BAUM_TL2);
|
|
baum_send_key(baum, BAUM_RSP_TopKeys, 0);
|
|
break;
|
|
case BRLAPI_KEY_CMD_FWINRT:
|
|
baum_send_key(baum, BAUM_RSP_TopKeys, BAUM_TR2);
|
|
baum_send_key(baum, BAUM_RSP_TopKeys, 0);
|
|
break;
|
|
case BRLAPI_KEY_CMD_LNUP:
|
|
baum_send_key(baum, BAUM_RSP_TopKeys, BAUM_TR1);
|
|
baum_send_key(baum, BAUM_RSP_TopKeys, 0);
|
|
break;
|
|
case BRLAPI_KEY_CMD_LNDN:
|
|
baum_send_key(baum, BAUM_RSP_TopKeys, BAUM_TR3);
|
|
baum_send_key(baum, BAUM_RSP_TopKeys, 0);
|
|
break;
|
|
case BRLAPI_KEY_CMD_TOP:
|
|
baum_send_key(baum, BAUM_RSP_TopKeys, BAUM_TL1|BAUM_TR1);
|
|
baum_send_key(baum, BAUM_RSP_TopKeys, 0);
|
|
break;
|
|
case BRLAPI_KEY_CMD_BOT:
|
|
baum_send_key(baum, BAUM_RSP_TopKeys, BAUM_TL3|BAUM_TR3);
|
|
baum_send_key(baum, BAUM_RSP_TopKeys, 0);
|
|
break;
|
|
case BRLAPI_KEY_CMD_TOP_LEFT:
|
|
baum_send_key(baum, BAUM_RSP_TopKeys, BAUM_TL2|BAUM_TR1);
|
|
baum_send_key(baum, BAUM_RSP_TopKeys, 0);
|
|
break;
|
|
case BRLAPI_KEY_CMD_BOT_LEFT:
|
|
baum_send_key(baum, BAUM_RSP_TopKeys, BAUM_TL2|BAUM_TR3);
|
|
baum_send_key(baum, BAUM_RSP_TopKeys, 0);
|
|
break;
|
|
case BRLAPI_KEY_CMD_HOME:
|
|
baum_send_key(baum, BAUM_RSP_TopKeys, BAUM_TL2|BAUM_TR1|BAUM_TR3);
|
|
baum_send_key(baum, BAUM_RSP_TopKeys, 0);
|
|
break;
|
|
case BRLAPI_KEY_CMD_PREFMENU:
|
|
baum_send_key(baum, BAUM_RSP_TopKeys, BAUM_TL1|BAUM_TL3|BAUM_TR1);
|
|
baum_send_key(baum, BAUM_RSP_TopKeys, 0);
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
case BRLAPI_KEY_TYPE_SYM:
|
|
{
|
|
brlapi_keyCode_t keysym = code & BRLAPI_KEY_CODE_MASK;
|
|
if (keysym < 0x100) {
|
|
uint8_t dots = nabcc_translation[ASCII2DOTS][keysym];
|
|
if (dots) {
|
|
baum_send_key2(baum, BAUM_RSP_EntryKeys, 0, dots);
|
|
baum_send_key2(baum, BAUM_RSP_EntryKeys, 0, 0);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (ret == -1 && (brlapi_errno != BRLAPI_ERROR_LIBCERR || errno != EINTR)) {
|
|
brlapi_perror("baum: brlapi_readKey");
|
|
brlapi__closeConnection(baum->brlapi);
|
|
g_free(baum->brlapi);
|
|
baum->brlapi = NULL;
|
|
}
|
|
}
|
|
|
|
static void char_braille_finalize(Object *obj)
|
|
{
|
|
BaumChardev *baum = BAUM_CHARDEV(obj);
|
|
|
|
timer_free(baum->cellCount_timer);
|
|
if (baum->brlapi) {
|
|
brlapi__closeConnection(baum->brlapi);
|
|
g_free(baum->brlapi);
|
|
}
|
|
}
|
|
|
|
static void baum_chr_open(Chardev *chr,
|
|
ChardevBackend *backend,
|
|
bool *be_opened,
|
|
Error **errp)
|
|
{
|
|
BaumChardev *baum = BAUM_CHARDEV(chr);
|
|
brlapi_handle_t *handle;
|
|
|
|
handle = g_malloc0(brlapi_getHandleSize());
|
|
baum->brlapi = handle;
|
|
|
|
baum->brlapi_fd = brlapi__openConnection(handle, NULL, NULL);
|
|
if (baum->brlapi_fd == -1) {
|
|
error_setg(errp, "brlapi__openConnection: %s",
|
|
brlapi_strerror(brlapi_error_location()));
|
|
g_free(handle);
|
|
baum->brlapi = NULL;
|
|
return;
|
|
}
|
|
baum->deferred_init = 0;
|
|
|
|
baum->cellCount_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, baum_cellCount_timer_cb, baum);
|
|
|
|
qemu_set_fd_handler(baum->brlapi_fd, baum_chr_read, NULL, baum);
|
|
}
|
|
|
|
static void char_braille_class_init(ObjectClass *oc, void *data)
|
|
{
|
|
ChardevClass *cc = CHARDEV_CLASS(oc);
|
|
|
|
cc->open = baum_chr_open;
|
|
cc->chr_write = baum_chr_write;
|
|
cc->chr_accept_input = baum_chr_accept_input;
|
|
}
|
|
|
|
static const TypeInfo char_braille_type_info = {
|
|
.name = TYPE_CHARDEV_BRAILLE,
|
|
.parent = TYPE_CHARDEV,
|
|
.instance_size = sizeof(BaumChardev),
|
|
.instance_finalize = char_braille_finalize,
|
|
.class_init = char_braille_class_init,
|
|
};
|
|
|
|
static void register_types(void)
|
|
{
|
|
type_register_static(&char_braille_type_info);
|
|
}
|
|
|
|
type_init(register_types);
|