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dvg.c
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dvg.c
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/*
* This file is part of the Advance project.
*
* Copyright (C) 2002, 2003, 2004, 2005 Andrea Mazzoleni
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* In addition, as a special exception, Andrea Mazzoleni
* gives permission to link the code of this program with
* the MAME library (or with modified versions of MAME that use the
* same license as MAME), and distribute linked combinations including
* the two. You must obey the GNU General Public License in all
* respects for all of the code used other than MAME. If you modify
* this file, you may extend this exception to your version of the
* file, but you are not obligated to do so. If you do not wish to
* do so, delete this exception statement from your version.
*/
#ifndef __MSDOS__ /* nothing for dos */
#ifdef __WIN32__
#include <windows.h>
#else
#include <termios.h>
#endif
#include <math.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <inttypes.h>
#include <sys/time.h>
#include <stdint.h>
#include <errno.h>
#include "portable.h"
#include "advance.h"
#include "driver.h"
#include "vidhrdw/vector.h"
#include "osdepend.h"
#include "jsmn.h"
// 0-15
#define DVG_RELEASE 0
#define DVG_BUILD 1
#define ARRAY_SIZE(a) (sizeof(a)/sizeof((a)[0]))
#define CMD_BUF_SIZE 0x20000
#define FLAG_COMPLETE 0x0
#define FLAG_RGB 0x1
#define FLAG_XY 0x2
#define FLAG_EXIT 0x7
#define FLAG_CMD 0x5
#define FLAG_CMD_GET_DVG_INFO 0x1
#define FLAG_COMPLETE_MONOCHROME (1 << 28)
#define DVG_RES_MIN 0
#define DVG_RES_MAX 4095
#define SAVE_TO_FILE 0
#define SORT_VECTORS 0
#define MAX_VECTORS 0x10000
// Defining region codes
#define LEFT 0x1
#define RIGHT 0x2
#define BOTTOM 0x4
#define TOP 0x8
#define GAME_NONE 0
#define GAME_ARMORA 1
#define GAME_WARRIOR 2
typedef struct vec_t {
struct vec_t *next;
int32_t x0;
int32_t y0;
int32_t x1;
int32_t y1;
uint8_t r;
uint8_t g;
uint8_t b;
} vector_t;
typedef struct {
char *name;
uint32_t exclude_blank_vectors;
uint32_t artwork;
uint32_t bw_game;
} game_info_t;
static uint32_t s_exclude_blank_vectors;
static uint32_t s_init;
static int s_dual_display;
static int32_t s_serial_fd = -1;
static int32_t s_xmin, s_xmax, s_ymin, s_ymax;
static float s_xscale, s_yscale;
static uint32 s_cmd_offs;
static uint8_t *s_cmd_buf;
static char s_serial_dev[128];
static uint32_t s_swap_xy = 0;
static uint32_t s_flip_x = 0;
static uint32_t s_flip_y = 1;
static int32_t s_clipx_min = DVG_RES_MIN;
static int32_t s_clipx_max = DVG_RES_MAX;
static int32_t s_clipy_min = DVG_RES_MIN;
static int32_t s_clipy_max = DVG_RES_MAX;
static uint32_t s_first_call;
static int32_t s_last_r;
static int32_t s_last_g;
static int32_t s_last_b;
static int32_t s_intensity_table[256];
static uint8_t s_gamma_table[256];
static uint32_t s_artwork;
static uint32_t s_bw_game;
static vector_t *s_in_vec_list;
static uint32_t s_in_vec_cnt;
static uint32_t s_in_vec_last_x;
static uint32_t s_in_vec_last_y;
static vector_t *s_out_vec_list;
static uint32_t s_out_vec_cnt;
static char s_json_buf[512];
static int s_json_length;
static uint32_t s_vertical_display;
static game_info_t s_games[] = {
{"armora", 0, GAME_ARMORA, 1},
{"armorap", 0, GAME_ARMORA, 1},
{"armorar", 0, GAME_ARMORA, 1},
{"asteroid", 0, GAME_NONE, 1},
{"asteroi1", 0, GAME_NONE, 1},
{"astdelux", 0, GAME_NONE, 1},
{"astdelu1", 0, GAME_NONE, 1},
{"llander", 0, GAME_NONE, 1},
{"llander1", 0, GAME_NONE, 1},
{"demon", 0, GAME_NONE, 1},
{"barrier", 0, GAME_NONE, 1},
{"bzone", 0, GAME_NONE, 1},
{"bzone2", 0, GAME_NONE, 1},
{"bzonec", 0, GAME_NONE, 1},
{"redbaron", 0, GAME_NONE, 1},
{"omegrace", 0, GAME_NONE, 1},
{"ripoff", 0, GAME_NONE, 1},
{"solarq", 0, GAME_NONE, 1},
{"speedfrk", 0, GAME_NONE, 1},
{"starhawk", 0, GAME_NONE, 1},
{"sundance", 0, GAME_NONE, 1},
{"tailg", 0, GAME_NONE, 1},
{"warrior", 0, GAME_WARRIOR, 1},
{"wotw", 0, GAME_NONE, 1},
{"spacewar", 0, GAME_NONE, 1},
{"starcas", 0, GAME_NONE, 1},
{"starcas1", 0, GAME_NONE, 1},
{"starcasp", 0, GAME_NONE, 1},
{"starcase", 0, GAME_NONE, 1},
{"starwars", 1, GAME_NONE, 0},
{"starwar1", 1, GAME_NONE, 0},
{"esb", 1, GAME_NONE, 0}
};
static void transform_final(int *px, int *py);
static int dvg_get_option(char *option, char *val_buf, uint32_t val_buf_size);
//
// Function to compute region code for a point(x, y)
//
uint32_t compute_code(int32_t x, int32_t y)
{
// initialized as being inside
uint32_t code = 0;
if (x < s_clipx_min) // to the left of rectangle
code |= LEFT;
else if (x > s_clipx_max) // to the right of rectangle
code |= RIGHT;
if (y < s_clipy_min) // below the rectangle
code |= BOTTOM;
else if (y > s_clipy_max) // above the rectangle
code |= TOP;
return code;
}
//
// Cohen-Sutherland line-clipping algorithm. Some games (such as starwars)
// generate coordinates outside the view window, so we need to clip them here.
//
uint32_t line_clip(int32_t *pX1, int32_t *pY1, int32_t *pX2, int32_t *pY2)
{
int32_t x = 0, y = 0, x1, y1, x2, y2;
uint32_t accept, code1, code2, code_out;
x1 = *pX1;
y1 = *pY1;
x2 = *pX2;
y2 = *pY2;
accept = 0;
// Compute region codes for P1, P2
code1 = compute_code(x1, y1);
code2 = compute_code(x2, y2);
while (1) {
if ((code1 == 0) && (code2 == 0)) {
// If both endpoints lie within rectangle
accept = 1;
break;
}
else if (code1 & code2) {
// If both endpoints are outside rectangle,
// in same region
break;
}
else {
// Some segment of line lies within the
// rectangle
// At least one endpoint is outside the
// rectangle, pick it.
if (code1 != 0) {
code_out = code1;
}
else {
code_out = code2;
}
// Find intersection point;
// using formulas y = y1 + slope * (x - x1),
// x = x1 + (1 / slope) * (y - y1)
if (code_out & TOP) {
// point is above the clip rectangle
x = x1 + (x2 - x1) * (s_clipy_max - y1) / (y2 - y1);
y = s_clipy_max;
}
else if (code_out & BOTTOM) {
// point is below the rectangle
x = x1 + (x2 - x1) * (s_clipy_min - y1) / (y2 - y1);
y = s_clipy_min;
}
else if (code_out & RIGHT) {
// point is to the right of rectangle
y = y1 + (y2 - y1) * (s_clipx_max - x1) / (x2 - x1);
x = s_clipx_max;
}
else if (code_out & LEFT) {
// point is to the left of rectangle
y = y1 + (y2 - y1) * (s_clipx_min - x1) / (x2 - x1);
x = s_clipx_min;
}
// Now intersection point x, y is found
// We replace point outside rectangle
// by intersection point
if (code_out == code1) {
x1 = x;
y1 = y;
code1 = compute_code(x1, y1);
}
else {
x2 = x;
y2 = y;
code2 = compute_code(x2, y2);
}
}
}
*pX1 = x1;
*pY1 = y1;
*pX2 = x2;
*pY2 = y2;
return accept;
}
//
// Sort, optimize and add vectors (and blank vectors) to the output vector list.
//
void sort_and_reconnect_vectors()
{
int32_t dmin;
uint32_t reverse;
int32_t last_x = -1;
int32_t last_y = -1;
int32_t x0, y0, x1, y1, dx0, dy0, dx1, dy1, d0, d1;
vector_t **min_v, *head, *s;
head = &s_in_vec_list[0];
s_out_vec_cnt = 0;
while (head) {
min_v = &head;
reverse = 0;
dmin = INT32_MAX;
vector_t **v;
for (v = min_v; *v; v = &(*v)->next) {
dx0 = (*v)->x0 - last_x;
dy0 = (*v)->y0 - last_y;
dx1 = (*v)->x1 - last_x;
dy1 = (*v)->y1 - last_y;
d0 = (int32_t)sqrt((dx0 * dx0) + (dy0 * dy0));
d1 = (int32_t)sqrt((dx1 * dx1) + (dy1 * dy1));
if (d0 < dmin) {
min_v = v;
dmin = d0;
reverse = 0;
}
if (d1 < dmin) {
min_v = v;
dmin = d1;
reverse = 1;
}
if (dmin == 0) {
break;
}
}
s = *min_v;
if (!s) {
break;
}
x0 = reverse ? s->x1 : s->x0;
y0 = reverse ? s->y1 : s->y0;
x1 = reverse ? s->x0 : s->x1;
y1 = reverse ? s->y0 : s->y1;
if (last_x != x0 || last_y != y0) {
s_out_vec_list[s_out_vec_cnt].x0 = last_x;
s_out_vec_list[s_out_vec_cnt].y0 = last_y;
s_out_vec_list[s_out_vec_cnt].x1 = x0;
s_out_vec_list[s_out_vec_cnt].y1 = y0;
s_out_vec_list[s_out_vec_cnt].r = 0;
s_out_vec_list[s_out_vec_cnt].g = 0;
s_out_vec_list[s_out_vec_cnt].b = 0;
s_out_vec_cnt++;
}
s_out_vec_list[s_out_vec_cnt].x0 = last_x;
s_out_vec_list[s_out_vec_cnt].y0 = last_y;
s_out_vec_list[s_out_vec_cnt].x1 = x1;
s_out_vec_list[s_out_vec_cnt].y1 = y1;
s_out_vec_list[s_out_vec_cnt].r = s->r;
s_out_vec_list[s_out_vec_cnt].g = s->g;
s_out_vec_list[s_out_vec_cnt].b = s->b;
s_out_vec_cnt++;
last_x = x1;
last_y = y1;
*min_v = s->next;
}
}
//
// Add vectors (and blank vectors) to the output vector list.
//
void reconnect_vectors()
{
int32_t last_x = 0;
int32_t last_y = 0;
int32_t x0, y0, x1, y1;
s_out_vec_cnt = 0;
uint32_t i;
for (i = 0; i < s_in_vec_cnt ; i++) {
x0 = s_in_vec_list[i].x0;
y0 = s_in_vec_list[i].y0;
x1 = s_in_vec_list[i].x1;
y1 = s_in_vec_list[i].y1;
if (last_x != x0 || last_y != y0) {
// Disconnect detected. Insert a blank vector.
s_out_vec_list[s_out_vec_cnt].x0 = last_x;
s_out_vec_list[s_out_vec_cnt].y0 = last_y;
s_out_vec_list[s_out_vec_cnt].x1 = x0;
s_out_vec_list[s_out_vec_cnt].y1 = y0;
s_out_vec_list[s_out_vec_cnt].r = 0;
s_out_vec_list[s_out_vec_cnt].g = 0;
s_out_vec_list[s_out_vec_cnt].b = 0;
s_out_vec_cnt++;
}
s_out_vec_list[s_out_vec_cnt].x0 = last_x;
s_out_vec_list[s_out_vec_cnt].y0 = last_y;
s_out_vec_list[s_out_vec_cnt].x1 = x1;
s_out_vec_list[s_out_vec_cnt].y1 = y1;
s_out_vec_list[s_out_vec_cnt].r = s_in_vec_list[i].r;
s_out_vec_list[s_out_vec_cnt].g = s_in_vec_list[i].g;
s_out_vec_list[s_out_vec_cnt].b = s_in_vec_list[i].b;
s_out_vec_cnt++;
last_x = x1;
last_y = y1;
}
}
//
// Needed to recompute the color gamma table.
//
static void recalc_gamma_table(float _gamma)
{
int i, h;
for (i = 0; i < 256; i++) {
h = 255.0*pow(i/255.0, 1.0/_gamma);
if( h > 255) h = 255;
s_gamma_table[i]= h;
}
}
//
// Reset the indexes to the vector list and command buffer.
//
static void cmd_reset(uint32_t initial)
{
uint32_t i, cnt;
s_in_vec_last_x = 0;
s_in_vec_last_y = 0;
s_in_vec_cnt = 0;
s_out_vec_cnt = 0;
s_cmd_offs = 0;
// Special sync pattern
cnt = 8;
if (initial) {
cnt = 512;
}
for (i = 0 ; i < cnt ; i++) {
s_cmd_buf[s_cmd_offs++] = 0xc0 | (i & 0x3);
}
}
//
// Add a vector to the input vector list. We don't keep
// blank vectors. They will be added later.
//
static void cmd_add_vec(int x, int y, int r, int g, int b)
{
uint32_t blank;
uint32_t add;
int32_t x0, y0, x1, y1;
x0 = s_in_vec_last_x;
y0 = s_in_vec_last_y;
x1 = x;
y1 = y;
if (s_exclude_blank_vectors) {
// Don't include blank vectors. We will add them again (see reconnect_vectors()) before sending.
blank = (r == 0) && (g == 0) && (b == 0);
}
else {
blank = 0;
}
if (!blank) {
if (s_in_vec_cnt < MAX_VECTORS) {
add = line_clip(&x0, &y0, &x1, &y1);
if (add) {
if (s_in_vec_cnt) {
s_in_vec_list[s_in_vec_cnt - 1].next = &s_in_vec_list[s_in_vec_cnt];
}
s_in_vec_list[s_in_vec_cnt].x0 = x0;
s_in_vec_list[s_in_vec_cnt].y0 = y0;
s_in_vec_list[s_in_vec_cnt].x1 = x1;
s_in_vec_list[s_in_vec_cnt].y1 = y1;
s_in_vec_list[s_in_vec_cnt].r = r;
s_in_vec_list[s_in_vec_cnt].g = g;
s_in_vec_list[s_in_vec_cnt].b = b;
s_in_vec_cnt++;
}
}
}
s_in_vec_last_x = x;
s_in_vec_last_y = y;
}
//
// Add commands to the serial buffer to send. When we detect
// color changes, we add a command to update it.
// As an optimization there is a blank flag in the XY coord which
// allows USB-DVG to blank the beam without updating the RGB color DACs.
//
static void cmd_add_point(int x, int y, int r, int g, int b)
{
uint32_t cmd;
uint32_t color_change;
uint32_t blank;
blank = (r == 0) && (g == 0) && (b == 0);
if (!blank) {
color_change = ((s_last_r != r) || (s_last_g != g) || (s_last_b != b));
if (color_change) {
s_last_r = r;
s_last_g = g;
s_last_b = b;
cmd = (FLAG_RGB << 29) | ((r & 0xff) << 16) | ((g & 0xff) << 8)| (b & 0xff);
if (s_cmd_offs <= (CMD_BUF_SIZE - 8)) {
s_cmd_buf[s_cmd_offs++] = cmd >> 24;
s_cmd_buf[s_cmd_offs++] = cmd >> 16;
s_cmd_buf[s_cmd_offs++] = cmd >> 8;
s_cmd_buf[s_cmd_offs++] = cmd >> 0;
}
}
}
transform_final(&x, &y);
cmd = (FLAG_XY << 29) | ((blank & 0x1) << 28) | ((x & 0x3fff) << 14) | (y & 0x3fff);
if (s_cmd_offs <= (CMD_BUF_SIZE - 8)) {
s_cmd_buf[s_cmd_offs++] = cmd >> 24;
s_cmd_buf[s_cmd_offs++] = cmd >> 16;
s_cmd_buf[s_cmd_offs++] = cmd >> 8;
s_cmd_buf[s_cmd_offs++] = cmd >> 0;
}
}
//
// Open the virtual serial port. We support Linux and Windows platforms.
//
static int serial_open()
{
int result = -1;
#ifdef __WIN32__
#if SAVE_TO_FILE
s_serial_fd = (int32_t)CreateFile("dvg.dat", GENERIC_WRITE, 0, NULL, CREATE_NEW, 0, NULL);
#else
DCB dcb;
BOOL res;
s_serial_fd = (int32_t)CreateFile(s_serial_dev, GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL);
if (s_serial_fd < 0) {
log_std(("dvg: CreateFile(%s) failed. (%ld) \n", s_serial_dev, GetLastError()));
goto END;
}
memset(&dcb, 0, sizeof(DCB));
dcb.DCBlength = sizeof(DCB);
res = GetCommState((HANDLE)s_serial_fd, &dcb);
if (res == FALSE) {
log_std(("dvg: GetCommState(%s) failed. (%ld) \n", s_serial_dev, GetLastError()));
goto END;
}
dcb.BaudRate = 2000000; // Bit rate. Don't care for serial over USB.
dcb.ByteSize = 8; // Data size, xmit and rcv
dcb.Parity = NOPARITY; // Parity bit
dcb.StopBits = ONESTOPBIT; // Stop bit
dcb.fOutX = FALSE;
dcb.fInX = FALSE;
dcb.fOutxCtsFlow = FALSE;
dcb.fOutxDsrFlow = FALSE;
dcb.fDsrSensitivity = FALSE;
dcb.fRtsControl = RTS_CONTROL_ENABLE;
dcb.fDtrControl = DTR_CONTROL_ENABLE;
res = SetCommState((HANDLE)s_serial_fd, &dcb);
if (res == FALSE) {
log_std(("dvg: SetCommState(%s) failed. (%ld) \n", s_serial_dev, GetLastError()));
goto END;
}
#endif
#else
struct termios attr;
if (s_serial_fd >= 0) {
log_std(("dvg: device already opened.\n"));
result = 0;
goto END;
}
s_serial_fd = open(s_serial_dev, O_RDWR | O_NOCTTY);
if (s_serial_fd < 0) {
log_std(("dvg: open(%s) failed. (%d) \n", s_serial_dev, errno));
goto END;
}
// No modem signals
cfmakeraw(&attr);
attr.c_cflag |= (CLOCAL | CREAD);
attr.c_oflag &= ~OPOST;
attr.c_cc[VMIN] = 0;
attr.c_cc[VTIME] = 30;
tcsetattr(s_serial_fd, TCSAFLUSH, &attr);
sleep(2); //required to make flush work, for some reason
tcflush(s_serial_fd, TCIOFLUSH);
result = 0;
#endif
END:
cmd_reset(1);
s_last_r = s_last_g = s_last_b = -1;
return result;
}
//
// Read responses from USB-DVG via the virtual serial port over USB.
//
static int serial_read(void *buf, uint32_t size)
{
int result = -1;
#ifdef __WIN32__
DWORD read;
if (ReadFile(s_serial_fd, buf, size, &read, NULL))
{
result = read;
}
#else
result = read(s_serial_fd, buf, size);
if (result != (int)size) {
log_std(("dvg: read error %d, expected %d\n", result, size));
result = -1;
}
#endif
return result;
}
//
// Send commands to USB-DVG via the virtual serial port over USB.
//
static int serial_write(void *buf, uint32_t size)
{
int result = -1, written;
uint32_t chunk, total;
total = size;
while (size) {
chunk = MIN(size, 512);
#ifdef __WIN32__
WriteFile(s_serial_fd, buf, chunk, (DWORD *)&written, NULL);
#else
written = write(s_serial_fd, buf, chunk);
#endif
if (written != (int)chunk) {
goto END;
}
buf += chunk;
size -= chunk;
}
result = total;
END:
return result;
}
//
// Close the serial port.
//
static int serial_close()
{
int result = -1;
uint32_t cmd;
if (s_serial_fd < 0) {
log_std(("dvg: device already closed.\n"));
goto END;
}
// Be gentle and indicate to USB-DVG that it is game over!
cmd = (FLAG_EXIT << 29);
s_cmd_offs = 0;
s_cmd_buf[s_cmd_offs++] = cmd >> 24;
s_cmd_buf[s_cmd_offs++] = cmd >> 16;
s_cmd_buf[s_cmd_offs++] = cmd >> 8;
s_cmd_buf[s_cmd_offs++] = cmd >> 0;
serial_write(s_cmd_buf, s_cmd_offs);
#ifdef __WIN32__
CloseHandle((HANDLE)s_serial_fd);
#else
close(s_serial_fd);
#endif
result = 0;
END:
s_serial_fd = -1;
return result;
}
//
// Preprocess and send commands to USB-DVG over the virtual serial port.
//
static int serial_send()
{
int result = -1;
uint32_t cmd;
if (s_serial_fd < 0) {
log_std(("dvg: device not opened.\n"));
goto END;
}
#if SORT_VECTORS
// USB-DVG has difficulties rendering sorted vectors. The screen (especially text) wobbles.
// I have yet to know why it does that. Otherwise the algorithm works fine.
sort_and_reconnect_vectors();
#else
reconnect_vectors();
#endif
uint32_t i;
for (i = 0 ; i < s_out_vec_cnt ; i++) {
cmd_add_point(s_out_vec_list[i].x1, s_out_vec_list[i].y1, s_out_vec_list[i].r, s_out_vec_list[i].g, s_out_vec_list[i].b);
}
cmd = (FLAG_COMPLETE << 29);
if (s_bw_game) {
cmd |= FLAG_COMPLETE_MONOCHROME;
}
s_cmd_buf[s_cmd_offs++] = cmd >> 24;
s_cmd_buf[s_cmd_offs++] = cmd >> 16;
s_cmd_buf[s_cmd_offs++] = cmd >> 8;
s_cmd_buf[s_cmd_offs++] = cmd >> 0;
result = serial_write(s_cmd_buf, s_cmd_offs);
END:
cmd_reset(0);
return result;
}
//
// Convert the MAME-supplied coordinates to USB-DVG-compatible coordinates.
//
static void transform_coords(int *px, int *py)
{
float x, y;
x = (*px >> 16) + (*px & 0xffff) / 65536.0;
x *= s_xscale;
y = (*py >> 16) + (*py & 0xffff) / 65536.0;
y *= s_yscale;
*px = x;
*py = y;
}
//
// Determine game type, orientation
//
int determine_game_settings()
{
uint32_t i;
char opt[64];
memset(opt, 0, sizeof(opt));
if (dvg_get_option("vertical", opt, sizeof(opt) - 1) >= 0) {
s_vertical_display = strncmp(opt, "true", 4) == 0;
log_std(("dvg: display is %s\n", s_vertical_display ? "vertical":"horizontal"));
}
if (Machine->gamedrv->flags & ORIENTATION_SWAP_XY) {
s_swap_xy = 1;
}
if (Machine->gamedrv->flags & ORIENTATION_FLIP_Y) {
s_flip_y = 0;
}
if (Machine->gamedrv->flags & ORIENTATION_FLIP_X) {
s_flip_x = 1;
}
s_bw_game = 0;
s_artwork = GAME_NONE;
s_exclude_blank_vectors = 0;
#ifdef MESS
s_bw_game = 1;
#else
for (i = 0 ; i < ARRAY_SIZE(s_games); i++) {
if (!strcmp(Machine->gamedrv->name, s_games[i].name)) {
s_artwork = s_games[i].artwork;
s_exclude_blank_vectors = s_games[i].exclude_blank_vectors;
s_bw_game = s_games[i].bw_game;
break;
}
}
#endif
return 0;
}
//
// Compute a final transformation to coordinates (flip and swap).
//
static void transform_final(int *px, int *py)
{
int x, y, tmp;
x = *px;
y = *py;
if (s_swap_xy) {
tmp = x;
x = y;
y = tmp;
}
if (s_flip_x) {
x = DVG_RES_MAX - x;
}
if (s_flip_y) {
y = DVG_RES_MAX - y;
}
if (x < 0) {
x = 0;
}
else if (x > DVG_RES_MAX) {
x = DVG_RES_MAX;
}
if (y < 0) {
y = 0;
}
else if (y > DVG_RES_MAX) {
y = DVG_RES_MAX;
}
if (s_vertical_display) {
if (s_swap_xy) {
// Vertical on vertical display
}
else {
// Horizontal on vertical display
y = 512 + (0.75 * y);
}
}
else {
if (s_swap_xy) {
// Vertical on horizontal display
x = 512 + (0.75 * x);
}
else {
// Horizontal on horizontal display
}
}
*px = x;
*py = y;
}
//
// Called by MAME with the latest vector list to send to our hardware.
// We do some preprocessing to lighten the load for USB-DVG.
//
int dvg_update(point *p, int num_points)
{
int i, col, intensity;
int x, x0, x1;
int y, y0, y1;
int r, g, b;
if (s_first_call) {
s_first_call = 0;
s_xmin = Machine->visible_area.min_x;
s_xmax = Machine->visible_area.max_x;
s_ymin = Machine->visible_area.min_y;
s_ymax = Machine->visible_area.max_y;
if (s_xmax == 0) {
s_xmax = 1;
}
if (s_ymax == 0) {
s_ymax = 1;
}
s_xscale = (float)(DVG_RES_MAX + 1) / (s_xmax - s_xmin);
s_yscale = (float)(DVG_RES_MAX + 1) / (s_ymax - s_ymin);
log_std(("dvg: xmin %d xmax %d ymin %d ymax %d xscale %g yscale %g\n", (int)s_xmin, (int)s_xmax, (int)s_ymin, (int)s_ymax, s_xscale, s_yscale));
determine_game_settings();
recalc_gamma_table(vector_get_gamma());
s_clipx_min = DVG_RES_MIN;
s_clipy_min = DVG_RES_MIN;
s_clipx_max = DVG_RES_MAX;
s_clipy_max = DVG_RES_MAX;
}
for (i = 0; i < num_points; i++) {
if (p->status == VCLIP) {
x0 = p->x;
y0 = p->y;
x1 = p->arg1;
y1 = p->arg2;
transform_coords(&x0, &y0);
transform_coords(&x1, &y1);
// Make sure the clip coordinates fall within the display coordinates.
if (x0 > DVG_RES_MAX) {
x0 = DVG_RES_MAX;
}
if (y0 > DVG_RES_MAX) {
y0 = DVG_RES_MAX;
}
if (x1 > DVG_RES_MAX) {
x1 = DVG_RES_MAX;
}
if (y1 > DVG_RES_MAX) {
y1 = DVG_RES_MAX;
}
s_clipx_min = x0;
s_clipy_min = y0;
s_clipx_max = x1;
s_clipy_max = y1;
}
else {
x = p->x;
y = p->y;
intensity = p->intensity;
r = g = b = 0;
if (intensity) {
if (p->callback)
col = Tinten(s_gamma_table[intensity], p->callback());
else
col = Tinten(s_gamma_table[intensity], p->col);
r = RGB_RED(col);
g = RGB_GREEN(col);
b = RGB_BLUE(col);
}
transform_coords(&x, &y);
cmd_add_vec(x, y, r, g, b);
}
p++;
}
if (num_points) {
switch (s_artwork) {
case GAME_ARMORA:
r = 108;
g = 108;
b = 108;
// Upper Right Quadrant
// Outer structure
cmd_add_vec(3446, 2048, 0, 0, 0);
cmd_add_vec(3958, 2224, r, g, b);
cmd_add_vec(3958, 3059, r, g, b);
cmd_add_vec(3323, 3059, r, g, b);
cmd_add_vec(3323, 3225, r, g, b);
cmd_add_vec(3194, 3225, r, g, b);
cmd_add_vec(3194, 3393, r, g, b);
cmd_add_vec(3067, 3393, r, g, b);
cmd_add_vec(3067, 3901, r, g, b);
cmd_add_vec(2304, 3901, r, g, b);
cmd_add_vec(2304, 3225, r, g, b);
cmd_add_vec(2048, 3225, r, g, b);
// Center structure
cmd_add_vec(2048, 2373, 0, 0, 0);
cmd_add_vec(2562, 2738, r, g, b);
cmd_add_vec(2430, 2738, r, g, b);
cmd_add_vec(2430, 2893, r, g, b);
cmd_add_vec(2306, 2893, r, g, b);
cmd_add_vec(2306, 3065, r, g, b);
cmd_add_vec(2048, 3065, r, g, b);
// Big structure
cmd_add_vec(2938, 2209, 0, 0, 0);
cmd_add_vec(3198, 2383, r, g, b);
cmd_add_vec(3706, 2383, r, g, b);
cmd_add_vec(3706, 2738, r, g, b);
cmd_add_vec(2938, 2738, r, g, b);
cmd_add_vec(2938, 2209, r, g, b);
// Small structure
cmd_add_vec(2551, 3055, 0, 0, 0);
cmd_add_vec(2816, 3590, r, g, b);
cmd_add_vec(2422, 3590, r, g, b);
cmd_add_vec(2422, 3231, r, g, b);
cmd_add_vec(2555, 3231, r, g, b);
cmd_add_vec(2555, 3055, r, g, b);
// Upper Left Quadrant
// Outer structure
cmd_add_vec(649, 2048, 0, 0, 0);
cmd_add_vec(137, 2224, r, g, b);
cmd_add_vec(137, 3059, r, g, b);
cmd_add_vec(772, 3059, r, g, b);
cmd_add_vec(772, 3225, r, g, b);
cmd_add_vec(901, 3225, r, g, b);
cmd_add_vec(901, 3393, r, g, b);
cmd_add_vec(1028, 3393, r, g, b);
cmd_add_vec(1028, 3901, r, g, b);
cmd_add_vec(1792, 3901, r, g, b);
cmd_add_vec(1792, 3225, r, g, b);
cmd_add_vec(2048, 3225, r, g, b);
// Center structure
cmd_add_vec(2048, 2373, 0, 0, 0);
cmd_add_vec(1533, 2738, r, g, b);
cmd_add_vec(1665, 2738, r, g, b);
cmd_add_vec(1665, 2893, r, g, b);
cmd_add_vec(1789, 2893, r, g, b);
cmd_add_vec(1789, 3065, r, g, b);
cmd_add_vec(2048, 3065, r, g, b);
// Big structure
cmd_add_vec(1157, 2209, 0, 0, 0);
cmd_add_vec(897, 2383, r, g, b);
cmd_add_vec(389, 2383, r, g, b);
cmd_add_vec(389, 2738, r, g, b);
cmd_add_vec(1157, 2738, r, g, b);
cmd_add_vec(1157, 2209, r, g, b);
// Small structure
cmd_add_vec(1544, 3055, 0, 0, 0);
cmd_add_vec(1280, 3590, r, g, b);
cmd_add_vec(1673, 3590, r, g, b);
cmd_add_vec(1673, 3231, r, g, b);
cmd_add_vec(1540, 3231, r, g, b);
cmd_add_vec(1540, 3055, r, g, b);
// Lower Right Quadrant
// Outer structure