diff options
Diffstat (limited to 'qemu/backends/baum.c')
-rw-r--r-- | qemu/backends/baum.c | 635 |
1 files changed, 635 insertions, 0 deletions
diff --git a/qemu/backends/baum.c b/qemu/backends/baum.c new file mode 100644 index 000000000..a69aafff4 --- /dev/null +++ b/qemu/backends/baum.c @@ -0,0 +1,635 @@ +/* + * QEMU Baum Braille Device + * + * Copyright (c) 2008 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-common.h" +#include "sysemu/char.h" +#include "qemu/timer.h" +#include "hw/usb.h" +#include <brlapi.h> +#include <brlapi_constants.h> +#include <brlapi_keycodes.h> +#ifdef CONFIG_SDL +#include <SDL_syswm.h> +#endif + +#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 + +typedef struct { + CharDriverState *chr; + + brlapi_handle_t *brlapi; + int brlapi_fd; + unsigned int x, y; + + 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; +} BaumDriverState; + +/* Let's assume NABCC by default */ +static const uint8_t nabcc_translation[256] = { + [0] = ' ', +#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 + [BRLAPI_DOTS(1,0,0,0,0,0,0,0)] = 'a', + [BRLAPI_DOTS(1,1,0,0,0,0,0,0)] = 'b', + [BRLAPI_DOTS(1,0,0,1,0,0,0,0)] = 'c', + [BRLAPI_DOTS(1,0,0,1,1,0,0,0)] = 'd', + [BRLAPI_DOTS(1,0,0,0,1,0,0,0)] = 'e', + [BRLAPI_DOTS(1,1,0,1,0,0,0,0)] = 'f', + [BRLAPI_DOTS(1,1,0,1,1,0,0,0)] = 'g', + [BRLAPI_DOTS(1,1,0,0,1,0,0,0)] = 'h', + [BRLAPI_DOTS(0,1,0,1,0,0,0,0)] = 'i', + [BRLAPI_DOTS(0,1,0,1,1,0,0,0)] = 'j', + [BRLAPI_DOTS(1,0,1,0,0,0,0,0)] = 'k', + [BRLAPI_DOTS(1,1,1,0,0,0,0,0)] = 'l', + [BRLAPI_DOTS(1,0,1,1,0,0,0,0)] = 'm', + [BRLAPI_DOTS(1,0,1,1,1,0,0,0)] = 'n', + [BRLAPI_DOTS(1,0,1,0,1,0,0,0)] = 'o', + [BRLAPI_DOTS(1,1,1,1,0,0,0,0)] = 'p', + [BRLAPI_DOTS(1,1,1,1,1,0,0,0)] = 'q', + [BRLAPI_DOTS(1,1,1,0,1,0,0,0)] = 'r', + [BRLAPI_DOTS(0,1,1,1,0,0,0,0)] = 's', + [BRLAPI_DOTS(0,1,1,1,1,0,0,0)] = 't', + [BRLAPI_DOTS(1,0,1,0,0,1,0,0)] = 'u', + [BRLAPI_DOTS(1,1,1,0,0,1,0,0)] = 'v', + [BRLAPI_DOTS(0,1,0,1,1,1,0,0)] = 'w', + [BRLAPI_DOTS(1,0,1,1,0,1,0,0)] = 'x', + [BRLAPI_DOTS(1,0,1,1,1,1,0,0)] = 'y', + [BRLAPI_DOTS(1,0,1,0,1,1,0,0)] = 'z', + + [BRLAPI_DOTS(1,0,0,0,0,0,1,0)] = 'A', + [BRLAPI_DOTS(1,1,0,0,0,0,1,0)] = 'B', + [BRLAPI_DOTS(1,0,0,1,0,0,1,0)] = 'C', + [BRLAPI_DOTS(1,0,0,1,1,0,1,0)] = 'D', + [BRLAPI_DOTS(1,0,0,0,1,0,1,0)] = 'E', + [BRLAPI_DOTS(1,1,0,1,0,0,1,0)] = 'F', + [BRLAPI_DOTS(1,1,0,1,1,0,1,0)] = 'G', + [BRLAPI_DOTS(1,1,0,0,1,0,1,0)] = 'H', + [BRLAPI_DOTS(0,1,0,1,0,0,1,0)] = 'I', + [BRLAPI_DOTS(0,1,0,1,1,0,1,0)] = 'J', + [BRLAPI_DOTS(1,0,1,0,0,0,1,0)] = 'K', + [BRLAPI_DOTS(1,1,1,0,0,0,1,0)] = 'L', + [BRLAPI_DOTS(1,0,1,1,0,0,1,0)] = 'M', + [BRLAPI_DOTS(1,0,1,1,1,0,1,0)] = 'N', + [BRLAPI_DOTS(1,0,1,0,1,0,1,0)] = 'O', + [BRLAPI_DOTS(1,1,1,1,0,0,1,0)] = 'P', + [BRLAPI_DOTS(1,1,1,1,1,0,1,0)] = 'Q', + [BRLAPI_DOTS(1,1,1,0,1,0,1,0)] = 'R', + [BRLAPI_DOTS(0,1,1,1,0,0,1,0)] = 'S', + [BRLAPI_DOTS(0,1,1,1,1,0,1,0)] = 'T', + [BRLAPI_DOTS(1,0,1,0,0,1,1,0)] = 'U', + [BRLAPI_DOTS(1,1,1,0,0,1,1,0)] = 'V', + [BRLAPI_DOTS(0,1,0,1,1,1,1,0)] = 'W', + [BRLAPI_DOTS(1,0,1,1,0,1,1,0)] = 'X', + [BRLAPI_DOTS(1,0,1,1,1,1,1,0)] = 'Y', + [BRLAPI_DOTS(1,0,1,0,1,1,1,0)] = 'Z', + + [BRLAPI_DOTS(0,0,1,0,1,1,0,0)] = '0', + [BRLAPI_DOTS(0,1,0,0,0,0,0,0)] = '1', + [BRLAPI_DOTS(0,1,1,0,0,0,0,0)] = '2', + [BRLAPI_DOTS(0,1,0,0,1,0,0,0)] = '3', + [BRLAPI_DOTS(0,1,0,0,1,1,0,0)] = '4', + [BRLAPI_DOTS(0,1,0,0,0,1,0,0)] = '5', + [BRLAPI_DOTS(0,1,1,0,1,0,0,0)] = '6', + [BRLAPI_DOTS(0,1,1,0,1,1,0,0)] = '7', + [BRLAPI_DOTS(0,1,1,0,0,1,0,0)] = '8', + [BRLAPI_DOTS(0,0,1,0,1,0,0,0)] = '9', + + [BRLAPI_DOTS(0,0,0,1,0,1,0,0)] = '.', + [BRLAPI_DOTS(0,0,1,1,0,1,0,0)] = '+', + [BRLAPI_DOTS(0,0,1,0,0,1,0,0)] = '-', + [BRLAPI_DOTS(1,0,0,0,0,1,0,0)] = '*', + [BRLAPI_DOTS(0,0,1,1,0,0,0,0)] = '/', + [BRLAPI_DOTS(1,1,1,0,1,1,0,0)] = '(', + [BRLAPI_DOTS(0,1,1,1,1,1,0,0)] = ')', + + [BRLAPI_DOTS(1,1,1,1,0,1,0,0)] = '&', + [BRLAPI_DOTS(0,0,1,1,1,1,0,0)] = '#', + + [BRLAPI_DOTS(0,0,0,0,0,1,0,0)] = ',', + [BRLAPI_DOTS(0,0,0,0,1,1,0,0)] = ';', + [BRLAPI_DOTS(1,0,0,0,1,1,0,0)] = ':', + [BRLAPI_DOTS(0,1,1,1,0,1,0,0)] = '!', + [BRLAPI_DOTS(1,0,0,1,1,1,0,0)] = '?', + [BRLAPI_DOTS(0,0,0,0,1,0,0,0)] = '"', + [BRLAPI_DOTS(0,0,1,0,0,0,0,0)] ='\'', + [BRLAPI_DOTS(0,0,0,1,0,0,0,0)] = '`', + [BRLAPI_DOTS(0,0,0,1,1,0,1,0)] = '^', + [BRLAPI_DOTS(0,0,0,1,1,0,0,0)] = '~', + [BRLAPI_DOTS(0,1,0,1,0,1,1,0)] = '[', + [BRLAPI_DOTS(1,1,0,1,1,1,1,0)] = ']', + [BRLAPI_DOTS(0,1,0,1,0,1,0,0)] = '{', + [BRLAPI_DOTS(1,1,0,1,1,1,0,0)] = '}', + [BRLAPI_DOTS(1,1,1,1,1,1,0,0)] = '=', + [BRLAPI_DOTS(1,1,0,0,0,1,0,0)] = '<', + [BRLAPI_DOTS(0,0,1,1,1,0,0,0)] = '>', + [BRLAPI_DOTS(1,1,0,1,0,1,0,0)] = '$', + [BRLAPI_DOTS(1,0,0,1,0,1,0,0)] = '%', + [BRLAPI_DOTS(0,0,0,1,0,0,1,0)] = '@', + [BRLAPI_DOTS(1,1,0,0,1,1,0,0)] = '|', + [BRLAPI_DOTS(1,1,0,0,1,1,1,0)] ='\\', + [BRLAPI_DOTS(0,0,0,1,1,1,0,0)] = '_', +}; + +/* The serial port can receive more of our data */ +static void baum_accept_input(struct CharDriverState *chr) +{ + BaumDriverState *baum = chr->opaque; + 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(BaumDriverState *baum, const uint8_t *buf, int len) +{ + uint8_t io_buf[1 + 2 * len], *cur = io_buf; + int room; + *cur++ = ESC; + while (len--) + if ((*cur++ = *buf++) == ESC) + *cur++ = ESC; + room = qemu_chr_be_can_write(baum->chr); + len = cur - io_buf; + if (len <= room) { + /* Fits */ + qemu_chr_be_write(baum->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(baum->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) +{ + BaumDriverState *baum = 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(BaumDriverState *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 %d 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[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) + + get_ticks_per_sec() / 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); + } + if (!(c = nabcc_translation[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_write(CharDriverState *chr, const uint8_t *buf, int len) +{ + BaumDriverState *baum = chr->opaque; + int tocopy, cur, eaten, orig_len = len; + + if (!len) + return 0; + if (!baum->brlapi) + 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(BaumDriverState *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)); +} + +/* We got some data on the BrlAPI socket */ +static void baum_chr_read(void *opaque) +{ + BaumDriverState *baum = opaque; + brlapi_keyCode_t code; + int ret; + if (!baum->brlapi) + 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: + 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 baum_close(struct CharDriverState *chr) +{ + BaumDriverState *baum = chr->opaque; + + timer_free(baum->cellCount_timer); + if (baum->brlapi) { + brlapi__closeConnection(baum->brlapi); + g_free(baum->brlapi); + } + g_free(baum); +} + +CharDriverState *chr_baum_init(void) +{ + BaumDriverState *baum; + CharDriverState *chr; + brlapi_handle_t *handle; +#if defined(CONFIG_SDL) +#if SDL_COMPILEDVERSION < SDL_VERSIONNUM(2, 0, 0) + SDL_SysWMinfo info; +#endif +#endif + int tty; + + baum = g_malloc0(sizeof(BaumDriverState)); + baum->chr = chr = qemu_chr_alloc(); + + chr->opaque = baum; + chr->chr_write = baum_write; + chr->chr_accept_input = baum_accept_input; + chr->chr_close = baum_close; + + handle = g_malloc0(brlapi_getHandleSize()); + baum->brlapi = handle; + + baum->brlapi_fd = brlapi__openConnection(handle, NULL, NULL); + if (baum->brlapi_fd == -1) { + brlapi_perror("baum_init: brlapi_openConnection"); + goto fail_handle; + } + + baum->cellCount_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, baum_cellCount_timer_cb, baum); + + if (brlapi__getDisplaySize(handle, &baum->x, &baum->y) == -1) { + brlapi_perror("baum_init: brlapi_getDisplaySize"); + goto fail; + } + +#if defined(CONFIG_SDL) +#if SDL_COMPILEDVERSION < SDL_VERSIONNUM(2, 0, 0) + memset(&info, 0, sizeof(info)); + SDL_VERSION(&info.version); + if (SDL_GetWMInfo(&info)) + tty = info.info.x11.wmwindow; + else +#endif +#endif + tty = BRLAPI_TTY_DEFAULT; + + if (brlapi__enterTtyMode(handle, tty, NULL) == -1) { + brlapi_perror("baum_init: brlapi_enterTtyMode"); + goto fail; + } + + qemu_set_fd_handler(baum->brlapi_fd, baum_chr_read, NULL, baum); + + return chr; + +fail: + timer_free(baum->cellCount_timer); + brlapi__closeConnection(handle); +fail_handle: + g_free(handle); + g_free(chr); + g_free(baum); + return NULL; +} + +static void register_types(void) +{ + register_char_driver("braille", CHARDEV_BACKEND_KIND_BRAILLE, NULL); +} + +type_init(register_types); |