diff options
Diffstat (limited to 'backends/dc/dcmain.cpp')
| -rw-r--r-- | backends/dc/dcmain.cpp | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/backends/dc/dcmain.cpp b/backends/dc/dcmain.cpp new file mode 100644 index 0000000000..a64643a004 --- /dev/null +++ b/backends/dc/dcmain.cpp @@ -0,0 +1,201 @@ +/* ScummVM - Scumm Interpreter + * Dreamcast port + * Copyright (C) 2002 Marcus Comstedt + * + * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + * $Header$ + * + */ + +#include "stdafx.h" +#include "scumm.h" +#include "mididrv.h" +#include "gameDetector.h" +#include "dc.h" +#include "icon.h" + + +Icon icon; + + +OSystem *OSystem_Dreamcast_create() { + return OSystem_Dreamcast::create(); +} + +OSystem *OSystem_Dreamcast::create() { + OSystem_Dreamcast *syst = new OSystem_Dreamcast(); + return syst; +} + +/* CD Audio */ +static bool find_track(int track, int &first_sec, int &last_sec) +{ + struct TOC *toc = cdfs_gettoc(); + if(!toc) + return false; + int i, first, last; + first = TOC_TRACK(toc->first); + last = TOC_TRACK(toc->last); + if(first < 1 || last > 99 || first > last) + return false; + for(i=last; i>=first; --i) + if(!(TOC_CTRL(toc->entry[i-1])&4)) + if(track==1) { + first_sec = TOC_LBA(toc->entry[i-1]); + last_sec = TOC_LBA(toc->entry[i]); + return true; + } else + --track; + return false; +} + +void OSystem_Dreamcast::play_cdrom(int track, int num_loops, + int start_frame, int end_frame) +{ + int first_sec, last_sec; +#if 1 + if(num_loops) + --num_loops; +#endif + if(num_loops>14) num_loops=14; + else if(num_loops<0) num_loops=15; // infinity + if(!find_track(track, first_sec, last_sec)) + return; + if(end_frame) + last_sec = first_sec + start_frame + end_frame; + first_sec += start_frame; + play_cdda_sectors(first_sec, last_sec, num_loops); +} + +void OSystem_Dreamcast::stop_cdrom() +{ + stop_cdda(); +} + +bool OSystem_Dreamcast::poll_cdrom() +{ + extern int getCdState(); + return getCdState() == 3; +} + +void OSystem_Dreamcast::update_cdrom() +{ + // Dummy. The CD drive takes care of itself. +} + +uint32 OSystem_Dreamcast::property(int param, Property *value) +{ + switch(param) { + + case PROP_GET_SAMPLE_RATE: + return 22050; + + } + + return 0; +} + +void OSystem_Dreamcast::quit() { + exit(0); +} + +void *OSystem_Dreamcast::create_thread(ThreadProc *proc, void *param) { + warning("Creating a thread! (not supported.)\n"); +} + +uint32 OSystem_Dreamcast::get_msecs() +{ + static uint32 msecs=0; + static unsigned int t0=0; + + unsigned int t = Timer(); + unsigned int dm, dt = t - t0; + + t0 = t; + dm = (dt << 6)/3125U; + dt -= (dm * 3125U)>>6; + t0 -= dt; + + return msecs += dm; +} + +void OSystem_Dreamcast::delay_msecs(uint msecs) +{ + get_msecs(); + unsigned int t, start = Timer(); + int time = (((unsigned int)msecs)*100000U)>>11; + while(((int)((t = Timer())-start))<time) + checkSound(); + get_msecs(); +} + +/* +void waitForTimer(Scumm *s, int time) +{ + if(time<0) + return; + unsigned int start = Timer(); + unsigned int devpoll = start+USEC_TO_TIMER(25000); + unsigned int t; + int oldmousex = s->mouse.x, oldmousey = s->mouse.y; + time = (((unsigned int)time)*100000U)>>11; + int mask = getimask(); + while(((int)((t = Timer())-start))<time) + if(((int)(t-devpoll))>0) { + setimask(15); + checkSound(); + handleInput(locked_get_pads(), s->mouse.x, s->mouse.y, + s->_leftBtnPressed, s->_rightBtnPressed, s->_keyPressed); + setimask(mask); + devpoll += USEC_TO_TIMER(17000); + if(s->mouse.x != oldmousex || s->mouse.y != oldmousey) { + extern void updateScreen(Scumm *s); + updateScreen(s); + oldmousex = s->mouse.x; + oldmousey = s->mouse.y; + } + } +} +*/ + +void dc_init_hardware(void) +{ +#ifndef NOSERIAL + serial_init(57600); + usleep(2000000); + printf("Serial OK\r\n"); +#endif + + cdfs_init(); + maple_init(); + dc_setup_ta(); + init_arm(); +} + +int dc_setup(GameDetector &detector) +{ + static char *argv[] = { "scummvm", NULL, NULL, NULL }; + static int argc = 3; + + initSound(); + + if(!selectGame(&detector, argv[2], argv[1], icon)) + exit(0); + + detector.parseCommandLine(argc, argv); + + return 0; +} |