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Diffstat (limited to 'distrib/sdl-1.2.12/src/video/fbcon/SDL_fbelo.c')
-rw-r--r--distrib/sdl-1.2.12/src/video/fbcon/SDL_fbelo.c442
1 files changed, 0 insertions, 442 deletions
diff --git a/distrib/sdl-1.2.12/src/video/fbcon/SDL_fbelo.c b/distrib/sdl-1.2.12/src/video/fbcon/SDL_fbelo.c
deleted file mode 100644
index 1142923..0000000
--- a/distrib/sdl-1.2.12/src/video/fbcon/SDL_fbelo.c
+++ /dev/null
@@ -1,442 +0,0 @@
-/*
- SDL - Simple DirectMedia Layer
- Copyright (C) 1997-2006 Sam Lantinga
-
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- This library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with this library; if not, write to the Free Software
- Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
-
- Sam Lantinga
- slouken@libsdl.org
-*/
-#include "SDL_config.h"
-
-#include <unistd.h>
-#include <sys/time.h>
-#include <ctype.h>
-
-#include "SDL_stdinc.h"
-#include "SDL_fbvideo.h"
-#include "SDL_fbelo.h"
-
-/*
- calibration default values
- values are read from the following environment variables:
-
- SDL_ELO_MIN_X
- SDL_ELO_MAX_X
- SDL_ELO_MIN_Y
- SDL_ELO_MAX_Y
-*/
-
-static int ELO_MIN_X = 400;
-static int ELO_MAX_X = 3670;
-static int ELO_MIN_Y = 500;
-static int ELO_MAX_Y = 3540;
-
-#define ELO_SNAP_SIZE 6
-#define ELO_TOUCH_BYTE 'T'
-#define ELO_ID 'I'
-#define ELO_MODE 'M'
-#define ELO_PARAMETER 'P'
-#define ELO_REPORT 'B'
-#define ELO_ACK 'A'
-
-#define ELO_INIT_CHECKSUM 0xAA
-
-#define ELO_BTN_PRESS 0x01
-#define ELO_STREAM 0x02
-#define ELO_BTN_RELEASE 0x04
-
-#define ELO_TOUCH_MODE 0x01
-#define ELO_STREAM_MODE 0x02
-#define ELO_UNTOUCH_MODE 0x04
-#define ELO_RANGE_CHECK_MODE 0x40
-#define ELO_TRIM_MODE 0x02
-#define ELO_CALIB_MODE 0x04
-#define ELO_SCALING_MODE 0x08
-#define ELO_TRACKING_MODE 0x40
-
-#define ELO_SERIAL_MASK 0xF8
-
-#define ELO_SERIAL_IO '0'
-
-#define ELO_MAX_TRIALS 3
-#define ELO_MAX_WAIT 100000
-#define ELO_UNTOUCH_DELAY 5
-#define ELO_REPORT_DELAY 1
-
-/* eloParsePacket
-*/
-int eloParsePacket(unsigned char* mousebuf, int* dx, int* dy, int* button_state) {
- static int elo_button = 0;
- static int last_x = 0;
- static int last_y = 0;
- int x,y;
-
- /* Check if we have a touch packet */
- if (mousebuf[1] != ELO_TOUCH_BYTE) {
- return 0;
- }
-
- x = ((mousebuf[4] << 8) | mousebuf[3]);
- y = ((mousebuf[6] << 8) | mousebuf[5]);
-
- if((SDL_abs(x - last_x) > ELO_SNAP_SIZE) || (SDL_abs(y - last_y) > ELO_SNAP_SIZE)) {
- *dx = ((mousebuf[4] << 8) | mousebuf[3]);
- *dy = ((mousebuf[6] << 8) | mousebuf[5]);
- }
- else {
- *dx = last_x;
- *dy = last_y;
- }
-
- last_x = *dx;
- last_y = *dy;
-
- if ( (mousebuf[2] & 0x07) == ELO_BTN_PRESS ) {
- elo_button = 1;
- }
- if ( (mousebuf[2] & 0x07) == ELO_BTN_RELEASE ) {
- elo_button = 0;
- }
-
- *button_state = elo_button;
- return 1;
-}
-
-/* Convert the raw coordinates from the ELO controller
- to a screen position.
-*/
-void eloConvertXY(_THIS, int *dx, int *dy) {
- int input_x = *dx;
- int input_y = *dy;
- int width = ELO_MAX_X - ELO_MIN_X;
- int height = ELO_MAX_Y - ELO_MIN_Y;
-
- *dx = ((int)cache_vinfo.xres - ((int)cache_vinfo.xres * (input_x - ELO_MIN_X)) / width);
- *dy = (cache_vinfo.yres * (input_y - ELO_MIN_Y)) / height;
-}
-
-
-/* eloGetPacket
-*/
-int eloGetPacket(unsigned char* buffer, int* buffer_p, int* checksum, int fd) {
- int num_bytes;
- int ok;
-
- if(fd == 0) {
- num_bytes = ELO_PACKET_SIZE;
- }
- else {
- num_bytes = read(fd,
- (char *) (buffer + *buffer_p),
- ELO_PACKET_SIZE - *buffer_p);
- }
-
- if (num_bytes < 0) {
-#ifdef DEBUG_MOUSE
- fprintf(stderr, "System error while reading from Elographics touchscreen.\n");
-#endif
- return 0;
- }
-
- while (num_bytes) {
- if ((*buffer_p == 0) && (buffer[0] != ELO_START_BYTE)) {
- SDL_memcpy(&buffer[0], &buffer[1], num_bytes-1);
- }
- else {
- if (*buffer_p < ELO_PACKET_SIZE-1) {
- *checksum = *checksum + buffer[*buffer_p];
- *checksum = *checksum % 256;
- }
- (*buffer_p)++;
- }
- num_bytes--;
- }
-
- if (*buffer_p == ELO_PACKET_SIZE) {
- ok = (*checksum == buffer[ELO_PACKET_SIZE-1]);
- *checksum = ELO_INIT_CHECKSUM;
- *buffer_p = 0;
-
- if (!ok) {
- return 0;
- }
-
- return 1;
- }
- else {
- return 0;
- }
-}
-
-/* eloSendPacket
-*/
-
-int eloSendPacket(unsigned char* packet, int fd)
-{
- int i, result;
- int sum = ELO_INIT_CHECKSUM;
-
- packet[0] = ELO_START_BYTE;
- for (i = 0; i < ELO_PACKET_SIZE-1; i++) {
- sum += packet[i];
- sum &= 0xFF;
- }
- packet[ELO_PACKET_SIZE-1] = sum;
-
- result = write(fd, packet, ELO_PACKET_SIZE);
-
- if (result != ELO_PACKET_SIZE) {
-#ifdef DEBUG_MOUSE
- printf("System error while sending to Elographics touchscreen.\n");
-#endif
- return 0;
- }
- else {
- return 1;
- }
-}
-
-
-/* eloWaitForInput
- */
-int eloWaitForInput(int fd, int timeout)
-{
- fd_set readfds;
- struct timeval to;
- int r;
-
- FD_ZERO(&readfds);
- FD_SET(fd, &readfds);
- to.tv_sec = 0;
- to.tv_usec = timeout;
-
- r = select(FD_SETSIZE, &readfds, NULL, NULL, &to);
- return r;
-}
-
-/* eloWaitReply
- */
-int eloWaitReply(unsigned char type, unsigned char *reply, int fd) {
- int ok;
- int i, result;
- int reply_p = 0;
- int sum = ELO_INIT_CHECKSUM;
-
- i = ELO_MAX_TRIALS;
- do {
- ok = 0;
-
- result = eloWaitForInput(fd, ELO_MAX_WAIT);
-
- if (result > 0) {
- ok = eloGetPacket(reply, &reply_p, &sum, fd);
-
- if (ok && reply[1] != type && type != ELO_PARAMETER) {
-#ifdef DEBUG_MOUSE
- fprintf(stderr, "Wrong reply received\n");
-#endif
- ok = 0;
- }
- }
- else {
-#ifdef DEBUG_MOUSE
- fprintf(stderr, "No input!\n");
-#endif
- }
-
- if (result == 0) {
- i--;
- }
- } while(!ok && (i>0));
-
- return ok;
-}
-
-
-/* eloWaitAck
- */
-
-int eloWaitAck(int fd) {
- unsigned char packet[ELO_PACKET_SIZE];
- int i, nb_errors;
-
- if (eloWaitReply(ELO_ACK, packet, fd)) {
- for (i = 0, nb_errors = 0; i < 4; i++) {
- if (packet[2 + i] != '0') {
- nb_errors++;
- }
- }
-
- if (nb_errors != 0) {
-#ifdef DEBUG_MOUSE
- fprintf(stderr, "Elographics acknowledge packet reports %d errors\n", nb_errors);
-#endif
- }
- return 1;
- }
- else {
- return 0;
- }
-}
-
-
-/* eloSendQuery --
-*/
-int eloSendQuery(unsigned char *request, unsigned char* reply, int fd) {
- int ok;
-
- if (eloSendPacket(request, fd)) {
- ok = eloWaitReply(toupper(request[1]), reply, fd);
- if (ok) {
- ok = eloWaitAck(fd);
- }
- return ok;
- }
- else {
- return 0;
- }
-}
-
-
-/* eloSendControl
-*/
-int eloSendControl(unsigned char* control, int fd) {
- if (eloSendPacket(control, fd)) {
- return eloWaitAck(fd);
- }
- else {
- return 0;
- }
-}
-
-/* eloInitController
-*/
-int eloInitController(int fd) {
- unsigned char req[ELO_PACKET_SIZE];
- unsigned char reply[ELO_PACKET_SIZE];
- const char *buffer = NULL;
- int result = 0;
-
- struct termios mouse_termios;
-
- /* try to read the calibration values */
- buffer = SDL_getenv("SDL_ELO_MIN_X");
- if(buffer) {
- ELO_MIN_X = SDL_atoi(buffer);
- }
- buffer = SDL_getenv("SDL_ELO_MAX_X");
- if(buffer) {
- ELO_MAX_X = SDL_atoi(buffer);
- }
- buffer = SDL_getenv("SDL_ELO_MIN_Y");
- if(buffer) {
- ELO_MIN_Y = SDL_atoi(buffer);
- }
- buffer = SDL_getenv("SDL_ELO_MAX_Y");
- if(buffer) {
- ELO_MAX_Y = SDL_atoi(buffer);
- }
-
-#ifdef DEBUG_MOUSE
- fprintf( stderr, "ELO calibration values:\nmin_x: %i\nmax_x: %i\nmin_y: %i\nmax_y: %i\n",
- ELO_MIN_X,
- ELO_MAX_X,
- ELO_MIN_Y,
- ELO_MAX_Y);
-#endif
-
- /* set comm params */
- SDL_memset(&mouse_termios, 0, sizeof(mouse_termios));
- mouse_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL;
- mouse_termios.c_cc[VMIN] = 1;
- result = tcsetattr(fd, TCSANOW, &mouse_termios);
-
- if (result < 0) {
-#ifdef DEBUG_MOUSE
- fprintf( stderr, "Unable to configure Elographics touchscreen port\n");
-#endif
- return 0;
- }
-
- SDL_memset(req, 0, ELO_PACKET_SIZE);
- req[1] = tolower(ELO_PARAMETER);
- if (!eloSendQuery(req, reply, fd)) {
-#ifdef DEBUG_MOUSE
- fprintf( stderr, "Not at the specified rate or model 2310, will continue\n");
-#endif
- }
-
- SDL_memset(req, 0, ELO_PACKET_SIZE);
- req[1] = tolower(ELO_ID);
- if (eloSendQuery(req, reply, fd)) {
-#ifdef DEBUG_MOUSE
- fprintf(stderr, "Ok, controller configured!\n");
-#endif
- }
- else {
-#ifdef DEBUG_MOUSE
- fprintf( stderr, "Unable to ask Elographics touchscreen identification\n");
-#endif
- return 0;
- }
-
- SDL_memset(req, 0, ELO_PACKET_SIZE);
- req[1] = ELO_MODE;
- req[3] = ELO_TOUCH_MODE | ELO_STREAM_MODE | ELO_UNTOUCH_MODE;
- req[4] = ELO_TRACKING_MODE;
- if (!eloSendControl(req, fd)) {
-#ifdef DEBUG_MOUSE
- fprintf( stderr, "Unable to change Elographics touchscreen operating mode\n");
-#endif
- return 0;
- }
-
- SDL_memset(req, 0, ELO_PACKET_SIZE);
- req[1] = ELO_REPORT;
- req[2] = ELO_UNTOUCH_DELAY;
- req[3] = ELO_REPORT_DELAY;
- if (!eloSendControl(req, fd)) {
-#ifdef DEBUG_MOUSE
- fprintf( stderr, "Unable to change Elographics touchscreen reports timings\n");
-#endif
- return 0;
- }
-
- return 1;
-}
-
-int eloReadPosition(_THIS, int fd, int* x, int* y, int* button_state, int* realx, int* realy) {
- unsigned char buffer[ELO_PACKET_SIZE];
- int pointer = 0;
- int checksum = ELO_INIT_CHECKSUM;
-
- while(pointer < ELO_PACKET_SIZE) {
- if(eloGetPacket(buffer, &pointer, &checksum, fd)) {
- break;
- }
- }
-
- if(!eloParsePacket(buffer, realx, realy, button_state)) {
- return 0;
- }
-
- *x = *realx;
- *y = *realy;
-
- eloConvertXY(this, x, y);
-
- return 1;
-}
generated by cgit v1.1 at 2024-04-28 12:25:10 +0000