| /* |
| * QEMU Baum Braille Device |
| * |
| * Copyright (c) 2008, 2010-2011, 2016-2017 Samuel Thibault |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to deal |
| * in the Software without restriction, including without limitation the rights |
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| * copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| * THE SOFTWARE. |
| */ |
| |
| #include "qemu/osdep.h" |
| #include "qapi/error.h" |
| #include "chardev/char.h" |
| #include "qemu/main-loop.h" |
| #include "qemu/module.h" |
| #include "qemu/timer.h" |
| #include "hw/usb.h" |
| #include "ui/console.h" |
| #include <brlapi.h> |
| #include <brlapi_constants.h> |
| #include <brlapi_keycodes.h> |
| #include "qom/object.h" |
| |
| #if 0 |
| #define DPRINTF(fmt, ...) \ |
| printf(fmt, ## __VA_ARGS__) |
| #else |
| #define DPRINTF(fmt, ...) |
| #endif |
| |
| #define ESC 0x1B |
| |
| #define BAUM_REQ_DisplayData 0x01 |
| #define BAUM_REQ_GetVersionNumber 0x05 |
| #define BAUM_REQ_GetKeys 0x08 |
| #define BAUM_REQ_SetMode 0x12 |
| #define BAUM_REQ_SetProtocol 0x15 |
| #define BAUM_REQ_GetDeviceIdentity 0x84 |
| #define BAUM_REQ_GetSerialNumber 0x8A |
| |
| #define BAUM_RSP_CellCount 0x01 |
| #define BAUM_RSP_VersionNumber 0x05 |
| #define BAUM_RSP_ModeSetting 0x11 |
| #define BAUM_RSP_CommunicationChannel 0x16 |
| #define BAUM_RSP_PowerdownSignal 0x17 |
| #define BAUM_RSP_HorizontalSensors 0x20 |
| #define BAUM_RSP_VerticalSensors 0x21 |
| #define BAUM_RSP_RoutingKeys 0x22 |
| #define BAUM_RSP_Switches 0x23 |
| #define BAUM_RSP_TopKeys 0x24 |
| #define BAUM_RSP_HorizontalSensor 0x25 |
| #define BAUM_RSP_VerticalSensor 0x26 |
| #define BAUM_RSP_RoutingKey 0x27 |
| #define BAUM_RSP_FrontKeys6 0x28 |
| #define BAUM_RSP_BackKeys6 0x29 |
| #define BAUM_RSP_CommandKeys 0x2B |
| #define BAUM_RSP_FrontKeys10 0x2C |
| #define BAUM_RSP_BackKeys10 0x2D |
| #define BAUM_RSP_EntryKeys 0x33 |
| #define BAUM_RSP_JoyStick 0x34 |
| #define BAUM_RSP_ErrorCode 0x40 |
| #define BAUM_RSP_InfoBlock 0x42 |
| #define BAUM_RSP_DeviceIdentity 0x84 |
| #define BAUM_RSP_SerialNumber 0x8A |
| #define BAUM_RSP_BluetoothName 0x8C |
| |
| #define BAUM_TL1 0x01 |
| #define BAUM_TL2 0x02 |
| #define BAUM_TL3 0x04 |
| #define BAUM_TR1 0x08 |
| #define BAUM_TR2 0x10 |
| #define BAUM_TR3 0x20 |
| |
| #define BUF_SIZE 256 |
| |
| #define X_MAX 84 |
| #define Y_MAX 1 |
| |
| struct BaumChardev { |
| Chardev parent; |
| |
| brlapi_handle_t *brlapi; |
| int brlapi_fd; |
| unsigned int x, y; |
| bool deferred_init; |
| |
| uint8_t in_buf[BUF_SIZE]; |
| uint8_t in_buf_used; |
| uint8_t out_buf[BUF_SIZE]; |
| uint8_t out_buf_used, out_buf_ptr; |
| |
| QEMUTimer *cellCount_timer; |
| }; |
| typedef struct BaumChardev BaumChardev; |
| |
| #define TYPE_CHARDEV_BRAILLE "chardev-braille" |
| DECLARE_INSTANCE_CHECKER(BaumChardev, BAUM_CHARDEV, |
| TYPE_CHARDEV_BRAILLE) |
| |
| /* Let's assume NABCC by default */ |
| enum way { |
| DOTS2ASCII, |
| ASCII2DOTS |
| }; |
| static const uint8_t nabcc_translation[2][256] = { |
| #ifndef BRLAPI_DOTS |
| #define BRLAPI_DOTS(d1,d2,d3,d4,d5,d6,d7,d8) \ |
| ((d1?BRLAPI_DOT1:0)|\ |
| (d2?BRLAPI_DOT2:0)|\ |
| (d3?BRLAPI_DOT3:0)|\ |
| (d4?BRLAPI_DOT4:0)|\ |
| (d5?BRLAPI_DOT5:0)|\ |
| (d6?BRLAPI_DOT6:0)|\ |
| (d7?BRLAPI_DOT7:0)|\ |
| (d8?BRLAPI_DOT8:0)) |
| #endif |
| #define DO(dots, ascii) \ |
| [DOTS2ASCII][dots] = ascii, \ |
| [ASCII2DOTS][ascii] = dots |
| DO(0, ' '), |
| DO(BRLAPI_DOTS(1, 0, 0, 0, 0, 0, 0, 0), 'a'), |
| DO(BRLAPI_DOTS(1, 1, 0, 0, 0, 0, 0, 0), 'b'), |
| DO(BRLAPI_DOTS(1, 0, 0, 1, 0, 0, 0, 0), 'c'), |
| DO(BRLAPI_DOTS(1, 0, 0, 1, 1, 0, 0, 0), 'd'), |
| DO(BRLAPI_DOTS(1, 0, 0, 0, 1, 0, 0, 0), 'e'), |
| DO(BRLAPI_DOTS(1, 1, 0, 1, 0, 0, 0, 0), 'f'), |
| DO(BRLAPI_DOTS(1, 1, 0, 1, 1, 0, 0, 0), 'g'), |
| DO(BRLAPI_DOTS(1, 1, 0, 0, 1, 0, 0, 0), 'h'), |
| DO(BRLAPI_DOTS(0, 1, 0, 1, 0, 0, 0, 0), 'i'), |
| DO(BRLAPI_DOTS(0, 1, 0, 1, 1, 0, 0, 0), 'j'), |
| DO(BRLAPI_DOTS(1, 0, 1, 0, 0, 0, 0, 0), 'k'), |
| DO(BRLAPI_DOTS(1, 1, 1, 0, 0, 0, 0, 0), 'l'), |
| DO(BRLAPI_DOTS(1, 0, 1, 1, 0, 0, 0, 0), 'm'), |
| DO(BRLAPI_DOTS(1, 0, 1, 1, 1, 0, 0, 0), 'n'), |
| DO(BRLAPI_DOTS(1, 0, 1, 0, 1, 0, 0, 0), 'o'), |
| DO(BRLAPI_DOTS(1, 1, 1, 1, 0, 0, 0, 0), 'p'), |
| DO(BRLAPI_DOTS(1, 1, 1, 1, 1, 0, 0, 0), 'q'), |
| DO(BRLAPI_DOTS(1, 1, 1, 0, 1, 0, 0, 0), 'r'), |
| DO(BRLAPI_DOTS(0, 1, 1, 1, 0, 0, 0, 0), 's'), |
| DO(BRLAPI_DOTS(0, 1, 1, 1, 1, 0, 0, 0), 't'), |
| DO(BRLAPI_DOTS(1, 0, 1, 0, 0, 1, 0, 0), 'u'), |
| DO(BRLAPI_DOTS(1, 1, 1, 0, 0, 1, 0, 0), 'v'), |
| DO(BRLAPI_DOTS(0, 1, 0, 1, 1, 1, 0, 0), 'w'), |
| DO(BRLAPI_DOTS(1, 0, 1, 1, 0, 1, 0, 0), 'x'), |
| DO(BRLAPI_DOTS(1, 0, 1, 1, 1, 1, 0, 0), 'y'), |
| DO(BRLAPI_DOTS(1, 0, 1, 0, 1, 1, 0, 0), 'z'), |
| |
| DO(BRLAPI_DOTS(1, 0, 0, 0, 0, 0, 1, 0), 'A'), |
| DO(BRLAPI_DOTS(1, 1, 0, 0, 0, 0, 1, 0), 'B'), |
| DO(BRLAPI_DOTS(1, 0, 0, 1, 0, 0, 1, 0), 'C'), |
| DO(BRLAPI_DOTS(1, 0, 0, 1, 1, 0, 1, 0), 'D'), |
| DO(BRLAPI_DOTS(1, 0, 0, 0, 1, 0, 1, 0), 'E'), |
| DO(BRLAPI_DOTS(1, 1, 0, 1, 0, 0, 1, 0), 'F'), |
| DO(BRLAPI_DOTS(1, 1, 0, 1, 1, 0, 1, 0), 'G'), |
| DO(BRLAPI_DOTS(1, 1, 0, 0, 1, 0, 1, 0), 'H'), |
| DO(BRLAPI_DOTS(0, 1, 0, 1, 0, 0, 1, 0), 'I'), |
| DO(BRLAPI_DOTS(0, 1, 0, 1, 1, 0, 1, 0), 'J'), |
| DO(BRLAPI_DOTS(1, 0, 1, 0, 0, 0, 1, 0), 'K'), |
| DO(BRLAPI_DOTS(1, 1, 1, 0, 0, 0, 1, 0), 'L'), |
| DO(BRLAPI_DOTS(1, 0, 1, 1, 0, 0, 1, 0), 'M'), |
| DO(BRLAPI_DOTS(1, 0, 1, 1, 1, 0, 1, 0), 'N'), |
| DO(BRLAPI_DOTS(1, 0, 1, 0, 1, 0, 1, 0), 'O'), |
| DO(BRLAPI_DOTS(1, 1, 1, 1, 0, 0, 1, 0), 'P'), |
| DO(BRLAPI_DOTS(1, 1, 1, 1, 1, 0, 1, 0), 'Q'), |
| DO(BRLAPI_DOTS(1, 1, 1, 0, 1, 0, 1, 0), 'R'), |
| DO(BRLAPI_DOTS(0, 1, 1, 1, 0, 0, 1, 0), 'S'), |
| DO(BRLAPI_DOTS(0, 1, 1, 1, 1, 0, 1, 0), 'T'), |
| DO(BRLAPI_DOTS(1, 0, 1, 0, 0, 1, 1, 0), 'U'), |
| DO(BRLAPI_DOTS(1, 1, 1, 0, 0, 1, 1, 0), 'V'), |
| DO(BRLAPI_DOTS(0, 1, 0, 1, 1, 1, 1, 0), 'W'), |
| DO(BRLAPI_DOTS(1, 0, 1, 1, 0, 1, 1, 0), 'X'), |
| DO(BRLAPI_DOTS(1, 0, 1, 1, 1, 1, 1, 0), 'Y'), |
| DO(BRLAPI_DOTS(1, 0, 1, 0, 1, 1, 1, 0), 'Z'), |
| |
| DO(BRLAPI_DOTS(0, 0, 1, 0, 1, 1, 0, 0), '0'), |
| DO(BRLAPI_DOTS(0, 1, 0, 0, 0, 0, 0, 0), '1'), |
| DO(BRLAPI_DOTS(0, 1, 1, 0, 0, 0, 0, 0), '2'), |
| DO(BRLAPI_DOTS(0, 1, 0, 0, 1, 0, 0, 0), '3'), |
| DO(BRLAPI_DOTS(0, 1, 0, 0, 1, 1, 0, 0), '4'), |
| DO(BRLAPI_DOTS(0, 1, 0, 0, 0, 1, 0, 0), '5'), |
| DO(BRLAPI_DOTS(0, 1, 1, 0, 1, 0, 0, 0), '6'), |
| DO(BRLAPI_DOTS(0, 1, 1, 0, 1, 1, 0, 0), '7'), |
| DO(BRLAPI_DOTS(0, 1, 1, 0, 0, 1, 0, 0), '8'), |
| DO(BRLAPI_DOTS(0, 0, 1, 0, 1, 0, 0, 0), '9'), |
| |
| DO(BRLAPI_DOTS(0, 0, 0, 1, 0, 1, 0, 0), '.'), |
| DO(BRLAPI_DOTS(0, 0, 1, 1, 0, 1, 0, 0), '+'), |
| DO(BRLAPI_DOTS(0, 0, 1, 0, 0, 1, 0, 0), '-'), |
| DO(BRLAPI_DOTS(1, 0, 0, 0, 0, 1, 0, 0), '*'), |
| DO(BRLAPI_DOTS(0, 0, 1, 1, 0, 0, 0, 0), '/'), |
| DO(BRLAPI_DOTS(1, 1, 1, 0, 1, 1, 0, 0), '('), |
| DO(BRLAPI_DOTS(0, 1, 1, 1, 1, 1, 0, 0), ')'), |
| |
| DO(BRLAPI_DOTS(1, 1, 1, 1, 0, 1, 0, 0), '&'), |
| DO(BRLAPI_DOTS(0, 0, 1, 1, 1, 1, 0, 0), '#'), |
| |
| DO(BRLAPI_DOTS(0, 0, 0, 0, 0, 1, 0, 0), ','), |
| DO(BRLAPI_DOTS(0, 0, 0, 0, 1, 1, 0, 0), ';'), |
| DO(BRLAPI_DOTS(1, 0, 0, 0, 1, 1, 0, 0), ':'), |
| DO(BRLAPI_DOTS(0, 1, 1, 1, 0, 1, 0, 0), '!'), |
| DO(BRLAPI_DOTS(1, 0, 0, 1, 1, 1, 0, 0), '?'), |
| DO(BRLAPI_DOTS(0, 0, 0, 0, 1, 0, 0, 0), '"'), |
| DO(BRLAPI_DOTS(0, 0, 1, 0, 0, 0, 0, 0), '\''), |
| DO(BRLAPI_DOTS(0, 0, 0, 1, 0, 0, 0, 0), '`'), |
| DO(BRLAPI_DOTS(0, 0, 0, 1, 1, 0, 1, 0), '^'), |
| DO(BRLAPI_DOTS(0, 0, 0, 1, 1, 0, 0, 0), '~'), |
| DO(BRLAPI_DOTS(0, 1, 0, 1, 0, 1, 1, 0), '['), |
| DO(BRLAPI_DOTS(1, 1, 0, 1, 1, 1, 1, 0), ']'), |
| DO(BRLAPI_DOTS(0, 1, 0, 1, 0, 1, 0, 0), '{'), |
| DO(BRLAPI_DOTS(1, 1, 0, 1, 1, 1, 0, 0), '}'), |
| DO(BRLAPI_DOTS(1, 1, 1, 1, 1, 1, 0, 0), '='), |
| DO(BRLAPI_DOTS(1, 1, 0, 0, 0, 1, 0, 0), '<'), |
| DO(BRLAPI_DOTS(0, 0, 1, 1, 1, 0, 0, 0), '>'), |
| DO(BRLAPI_DOTS(1, 1, 0, 1, 0, 1, 0, 0), '$'), |
| DO(BRLAPI_DOTS(1, 0, 0, 1, 0, 1, 0, 0), '%'), |
| DO(BRLAPI_DOTS(0, 0, 0, 1, 0, 0, 1, 0), '@'), |
| DO(BRLAPI_DOTS(1, 1, 0, 0, 1, 1, 0, 0), '|'), |
| DO(BRLAPI_DOTS(1, 1, 0, 0, 1, 1, 1, 0), '\\'), |
| DO(BRLAPI_DOTS(0, 0, 0, 1, 1, 1, 0, 0), '_'), |
| }; |
| |
| /* The guest OS has started discussing with us, finish initializing BrlAPI */ |
| static int baum_deferred_init(BaumChardev *baum) |
| { |
| int tty = BRLAPI_TTY_DEFAULT; |
| QemuConsole *con; |
| |
| if (baum->deferred_init) { |
| return 1; |
| } |
| |
| if (brlapi__getDisplaySize(baum->brlapi, &baum->x, &baum->y) == -1) { |
| brlapi_perror("baum: brlapi__getDisplaySize"); |
| return 0; |
| } |
| if (baum->y > Y_MAX) { |
| baum->y = Y_MAX; |
| } |
| if (baum->x > X_MAX) { |
| baum->x = X_MAX; |
| } |
| |
| con = qemu_console_lookup_by_index(0); |
| if (con && qemu_console_is_graphic(con)) { |
| tty = qemu_console_get_window_id(con); |
| if (tty == -1) |
| tty = BRLAPI_TTY_DEFAULT; |
| } |
| |
| if (brlapi__enterTtyMode(baum->brlapi, tty, NULL) == -1) { |
| brlapi_perror("baum: brlapi__enterTtyMode"); |
| return 0; |
| } |
| baum->deferred_init = 1; |
| return 1; |
| } |
| |
| /* The serial port can receive more of our data */ |
| static void baum_chr_accept_input(struct Chardev *chr) |
| { |
| BaumChardev *baum = BAUM_CHARDEV(chr); |
| int room, first; |
| |
| if (!baum->out_buf_used) |
| return; |
| room = qemu_chr_be_can_write(chr); |
| if (!room) |
| return; |
| if (room > baum->out_buf_used) |
| room = baum->out_buf_used; |
| |
| first = BUF_SIZE - baum->out_buf_ptr; |
| if (room > first) { |
| qemu_chr_be_write(chr, baum->out_buf + baum->out_buf_ptr, first); |
| baum->out_buf_ptr = 0; |
| baum->out_buf_used -= first; |
| room -= first; |
| } |
| qemu_chr_be_write(chr, baum->out_buf + baum->out_buf_ptr, room); |
| baum->out_buf_ptr += room; |
| baum->out_buf_used -= room; |
| } |
| |
| /* We want to send a packet */ |
| static void baum_write_packet(BaumChardev *baum, const uint8_t *buf, int len) |
| { |
| Chardev *chr = CHARDEV(baum); |
| g_autofree uint8_t *io_buf = g_malloc(1 + 2 * len); |
| uint8_t *cur = io_buf; |
| int room; |
| *cur++ = ESC; |
| while (len--) |
| if ((*cur++ = *buf++) == ESC) |
| *cur++ = ESC; |
| room = qemu_chr_be_can_write(chr); |
| len = cur - io_buf; |
| if (len <= room) { |
| /* Fits */ |
| qemu_chr_be_write(chr, io_buf, len); |
| } else { |
| int first; |
| uint8_t out; |
| /* Can't fit all, send what can be, and store the rest. */ |
| qemu_chr_be_write(chr, io_buf, room); |
| len -= room; |
| cur = io_buf + room; |
| if (len > BUF_SIZE - baum->out_buf_used) { |
| /* Can't even store it, drop the previous data... */ |
| assert(len <= BUF_SIZE); |
| baum->out_buf_used = 0; |
| baum->out_buf_ptr = 0; |
| } |
| out = baum->out_buf_ptr; |
| baum->out_buf_used += len; |
| first = BUF_SIZE - baum->out_buf_ptr; |
| if (len > first) { |
| memcpy(baum->out_buf + out, cur, first); |
| out = 0; |
| len -= first; |
| cur += first; |
| } |
| memcpy(baum->out_buf + out, cur, len); |
| } |
| } |
| |
| /* Called when the other end seems to have a wrong idea of our display size */ |
| static void baum_cellCount_timer_cb(void *opaque) |
| { |
| BaumChardev *baum = BAUM_CHARDEV(opaque); |
| uint8_t cell_count[] = { BAUM_RSP_CellCount, baum->x * baum->y }; |
| DPRINTF("Timeout waiting for DisplayData, sending cell count\n"); |
| baum_write_packet(baum, cell_count, sizeof(cell_count)); |
| } |
| |
| /* Try to interpret a whole incoming packet */ |
| static int baum_eat_packet(BaumChardev *baum, const uint8_t *buf, int len) |
| { |
| const uint8_t *cur = buf; |
| uint8_t req = 0; |
| |
| if (!len--) |
| return 0; |
| if (*cur++ != ESC) { |
| while (*cur != ESC) { |
| if (!len--) |
| return 0; |
| cur++; |
| } |
| DPRINTF("Dropped %td bytes!\n", cur - buf); |
| } |
| |
| #define EAT(c) do {\ |
| if (!len--) \ |
| return 0; \ |
| if ((c = *cur++) == ESC) { \ |
| if (!len--) \ |
| return 0; \ |
| if (*cur++ != ESC) { \ |
| DPRINTF("Broken packet %#2x, tossing\n", req); \ |
| if (timer_pending(baum->cellCount_timer)) { \ |
| timer_del(baum->cellCount_timer); \ |
| baum_cellCount_timer_cb(baum); \ |
| } \ |
| return (cur - 2 - buf); \ |
| } \ |
| } \ |
| } while (0) |
| |
| EAT(req); |
| switch (req) { |
| case BAUM_REQ_DisplayData: |
| { |
| uint8_t cells[X_MAX * Y_MAX], c; |
| uint8_t text[X_MAX * Y_MAX]; |
| uint8_t zero[X_MAX * Y_MAX]; |
| 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, baum->x * baum->y); |
| |
| 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, |
| }; |
| module_obj(TYPE_CHARDEV_BRAILLE); |
| |
| static void register_types(void) |
| { |
| type_register_static(&char_braille_type_info); |
| } |
| |
| type_init(register_types); |
