diff options
Diffstat (limited to 'distrib/sdl-1.2.15/src/cdrom/win32/SDL_syscdrom.c')
| -rw-r--r-- | distrib/sdl-1.2.15/src/cdrom/win32/SDL_syscdrom.c | 386 |
1 files changed, 386 insertions, 0 deletions
diff --git a/distrib/sdl-1.2.15/src/cdrom/win32/SDL_syscdrom.c b/distrib/sdl-1.2.15/src/cdrom/win32/SDL_syscdrom.c new file mode 100644 index 0000000..cac9fd3 --- /dev/null +++ b/distrib/sdl-1.2.15/src/cdrom/win32/SDL_syscdrom.c @@ -0,0 +1,386 @@ +/* + SDL - Simple DirectMedia Layer + Copyright (C) 1997-2012 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" + +#ifdef SDL_CDROM_WIN32 + +/* Functions for system-level CD-ROM audio control */ + +#define WIN32_LEAN_AND_MEAN +#include <windows.h> +#include <mmsystem.h> + +#include "SDL_cdrom.h" +#include "../SDL_syscdrom.h" + +/* This really broken?? */ +#define BROKEN_MCI_PAUSE /* Pausing actually stops play -- Doh! */ + +/* The maximum number of CD-ROM drives we'll detect (Don't change!) */ +#define MAX_DRIVES 26 + +/* A list of available CD-ROM drives */ +static char *SDL_cdlist[MAX_DRIVES]; +static MCIDEVICEID SDL_mciID[MAX_DRIVES]; +#ifdef BROKEN_MCI_PAUSE +static int SDL_paused[MAX_DRIVES]; +#endif +static int SDL_CD_end_position; + +/* The system-dependent CD control functions */ +static const char *SDL_SYS_CDName(int drive); +static int SDL_SYS_CDOpen(int drive); +static int SDL_SYS_CDGetTOC(SDL_CD *cdrom); +static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position); +static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length); +static int SDL_SYS_CDPause(SDL_CD *cdrom); +static int SDL_SYS_CDResume(SDL_CD *cdrom); +static int SDL_SYS_CDStop(SDL_CD *cdrom); +static int SDL_SYS_CDEject(SDL_CD *cdrom); +static void SDL_SYS_CDClose(SDL_CD *cdrom); + + +/* Add a CD-ROM drive to our list of valid drives */ +static void AddDrive(char *drive) +{ + int i; + + if ( SDL_numcds < MAX_DRIVES ) { + /* Add this drive to our list */ + i = SDL_numcds; + SDL_cdlist[i] = SDL_strdup(drive); + if ( SDL_cdlist[i] == NULL ) { + SDL_OutOfMemory(); + return; + } + ++SDL_numcds; +#ifdef CDROM_DEBUG + fprintf(stderr, "Added CD-ROM drive: %s\n", drive); +#endif + } +} + +int SDL_SYS_CDInit(void) +{ + /* checklist: Drive 'A' - 'Z' */ + int i; + char drive[4]; + + /* Fill in our driver capabilities */ + SDL_CDcaps.Name = SDL_SYS_CDName; + SDL_CDcaps.Open = SDL_SYS_CDOpen; + SDL_CDcaps.GetTOC = SDL_SYS_CDGetTOC; + SDL_CDcaps.Status = SDL_SYS_CDStatus; + SDL_CDcaps.Play = SDL_SYS_CDPlay; + SDL_CDcaps.Pause = SDL_SYS_CDPause; + SDL_CDcaps.Resume = SDL_SYS_CDResume; + SDL_CDcaps.Stop = SDL_SYS_CDStop; + SDL_CDcaps.Eject = SDL_SYS_CDEject; + SDL_CDcaps.Close = SDL_SYS_CDClose; + + /* Scan the system for CD-ROM drives */ + for ( i='A'; i<='Z'; ++i ) { + SDL_snprintf(drive, SDL_arraysize(drive), "%c:\\", i); + if ( GetDriveType(drive) == DRIVE_CDROM ) { + AddDrive(drive); + } + } + SDL_memset(SDL_mciID, 0, sizeof(SDL_mciID)); + return(0); +} + +/* General ioctl() CD-ROM command function */ +static int SDL_SYS_CDioctl(int id, UINT msg, DWORD flags, void *arg) +{ + MCIERROR mci_error; + + mci_error = mciSendCommand(SDL_mciID[id], msg, flags, (DWORD_PTR)arg); + if ( mci_error ) { + char error[256]; + + mciGetErrorString(mci_error, error, 256); + SDL_SetError("mciSendCommand() error: %s", error); + } + return(!mci_error ? 0 : -1); +} + +static const char *SDL_SYS_CDName(int drive) +{ + return(SDL_cdlist[drive]); +} + +static int SDL_SYS_CDOpen(int drive) +{ + MCI_OPEN_PARMS mci_open; + MCI_SET_PARMS mci_set; + char device[3]; + DWORD flags; + + /* Open the requested device */ + mci_open.lpstrDeviceType = (LPCSTR) MCI_DEVTYPE_CD_AUDIO; + device[0] = *SDL_cdlist[drive]; + device[1] = ':'; + device[2] = '\0'; + mci_open.lpstrElementName = device; + flags = + (MCI_OPEN_TYPE|MCI_OPEN_SHAREABLE|MCI_OPEN_TYPE_ID|MCI_OPEN_ELEMENT); + if ( SDL_SYS_CDioctl(0, MCI_OPEN, flags, &mci_open) < 0 ) { + flags &= ~MCI_OPEN_SHAREABLE; + if ( SDL_SYS_CDioctl(0, MCI_OPEN, flags, &mci_open) < 0 ) { + return(-1); + } + } + SDL_mciID[drive] = mci_open.wDeviceID; + + /* Set the minute-second-frame time format */ + mci_set.dwTimeFormat = MCI_FORMAT_MSF; + SDL_SYS_CDioctl(drive, MCI_SET, MCI_SET_TIME_FORMAT, &mci_set); + +#ifdef BROKEN_MCI_PAUSE + SDL_paused[drive] = 0; +#endif + return(drive); +} + +static int SDL_SYS_CDGetTOC(SDL_CD *cdrom) +{ + MCI_STATUS_PARMS mci_status; + int i, okay; + DWORD flags; + + okay = 0; + mci_status.dwItem = MCI_STATUS_NUMBER_OF_TRACKS; + flags = MCI_STATUS_ITEM | MCI_WAIT; + if ( SDL_SYS_CDioctl(cdrom->id, MCI_STATUS, flags, &mci_status) == 0 ) { + cdrom->numtracks = mci_status.dwReturn; + if ( cdrom->numtracks > SDL_MAX_TRACKS ) { + cdrom->numtracks = SDL_MAX_TRACKS; + } + /* Read all the track TOC entries */ + flags = MCI_STATUS_ITEM | MCI_TRACK | MCI_WAIT; + for ( i=0; i<cdrom->numtracks; ++i ) { + cdrom->track[i].id = i+1; + mci_status.dwTrack = cdrom->track[i].id; +#ifdef MCI_CDA_STATUS_TYPE_TRACK + mci_status.dwItem = MCI_CDA_STATUS_TYPE_TRACK; + if ( SDL_SYS_CDioctl(cdrom->id, MCI_STATUS, flags, + &mci_status) < 0 ) { + break; + } + if ( mci_status.dwReturn == MCI_CDA_TRACK_AUDIO ) { + cdrom->track[i].type = SDL_AUDIO_TRACK; + } else { + cdrom->track[i].type = SDL_DATA_TRACK; + } +#else + cdrom->track[i].type = SDL_AUDIO_TRACK; +#endif + mci_status.dwItem = MCI_STATUS_POSITION; + if ( SDL_SYS_CDioctl(cdrom->id, MCI_STATUS, flags, + &mci_status) < 0 ) { + break; + } + cdrom->track[i].offset = MSF_TO_FRAMES( + MCI_MSF_MINUTE(mci_status.dwReturn), + MCI_MSF_SECOND(mci_status.dwReturn), + MCI_MSF_FRAME(mci_status.dwReturn)); + cdrom->track[i].length = 0; + if ( i > 0 ) { + cdrom->track[i-1].length = + cdrom->track[i].offset- + cdrom->track[i-1].offset; + } + } + if ( i == cdrom->numtracks ) { + mci_status.dwTrack = cdrom->track[i - 1].id; + mci_status.dwItem = MCI_STATUS_LENGTH; + if ( SDL_SYS_CDioctl(cdrom->id, MCI_STATUS, flags, + &mci_status) == 0 ) { + cdrom->track[i - 1].length = MSF_TO_FRAMES( + MCI_MSF_MINUTE(mci_status.dwReturn), + MCI_MSF_SECOND(mci_status.dwReturn), + MCI_MSF_FRAME(mci_status.dwReturn)); + /* compute lead-out offset */ + cdrom->track[i].offset = cdrom->track[i - 1].offset + + cdrom->track[i - 1].length; + cdrom->track[i].length = 0; + okay = 1; + } + } + } + return(okay ? 0 : -1); +} + +/* Get CD-ROM status */ +static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position) +{ + CDstatus status; + MCI_STATUS_PARMS mci_status; + DWORD flags; + + flags = MCI_STATUS_ITEM | MCI_WAIT; + mci_status.dwItem = MCI_STATUS_MODE; + if ( SDL_SYS_CDioctl(cdrom->id, MCI_STATUS, flags, &mci_status) < 0 ) { + status = CD_ERROR; + } else { + switch (mci_status.dwReturn) { + case MCI_MODE_NOT_READY: + case MCI_MODE_OPEN: + status = CD_TRAYEMPTY; + break; + case MCI_MODE_STOP: +#ifdef BROKEN_MCI_PAUSE + if ( SDL_paused[cdrom->id] ) { + status = CD_PAUSED; + } else { + status = CD_STOPPED; + } +#else + status = CD_STOPPED; +#endif /* BROKEN_MCI_PAUSE */ + break; + case MCI_MODE_PLAY: +#ifdef BROKEN_MCI_PAUSE + if ( SDL_paused[cdrom->id] ) { + status = CD_PAUSED; + } else { + status = CD_PLAYING; + } +#else + status = CD_PLAYING; +#endif /* BROKEN_MCI_PAUSE */ + break; + case MCI_MODE_PAUSE: + status = CD_PAUSED; + break; + default: + status = CD_ERROR; + break; + } + } + if ( position ) { + if ( status == CD_PLAYING || (status == CD_PAUSED) ) { + mci_status.dwItem = MCI_STATUS_POSITION; + if ( SDL_SYS_CDioctl(cdrom->id, MCI_STATUS, flags, + &mci_status) == 0 ) { + *position = MSF_TO_FRAMES( + MCI_MSF_MINUTE(mci_status.dwReturn), + MCI_MSF_SECOND(mci_status.dwReturn), + MCI_MSF_FRAME(mci_status.dwReturn)); + } else { + *position = 0; + } + } else { + *position = 0; + } + } + return(status); +} + +/* Start play */ +static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length) +{ + MCI_PLAY_PARMS mci_play; + int m, s, f; + DWORD flags; + + flags = MCI_FROM | MCI_TO | MCI_NOTIFY; + mci_play.dwCallback = 0; + FRAMES_TO_MSF(start, &m, &s, &f); + mci_play.dwFrom = MCI_MAKE_MSF(m, s, f); + FRAMES_TO_MSF(start+length, &m, &s, &f); + mci_play.dwTo = MCI_MAKE_MSF(m, s, f); + SDL_CD_end_position = mci_play.dwTo; + return(SDL_SYS_CDioctl(cdrom->id, MCI_PLAY, flags, &mci_play)); +} + +/* Pause play */ +static int SDL_SYS_CDPause(SDL_CD *cdrom) +{ +#ifdef BROKEN_MCI_PAUSE + SDL_paused[cdrom->id] = 1; +#endif + return(SDL_SYS_CDioctl(cdrom->id, MCI_PAUSE, MCI_WAIT, NULL)); +} + +/* Resume play */ +static int SDL_SYS_CDResume(SDL_CD *cdrom) +{ +#ifdef BROKEN_MCI_PAUSE + MCI_STATUS_PARMS mci_status; + int okay; + int flags; + + okay = 0; + /* Play from the current play position to the end position set earlier */ + flags = MCI_STATUS_ITEM | MCI_WAIT; + mci_status.dwItem = MCI_STATUS_POSITION; + if ( SDL_SYS_CDioctl(cdrom->id, MCI_STATUS, flags, &mci_status) == 0 ) { + MCI_PLAY_PARMS mci_play; + + flags = MCI_FROM | MCI_TO | MCI_NOTIFY; + mci_play.dwCallback = 0; + mci_play.dwFrom = mci_status.dwReturn; + mci_play.dwTo = SDL_CD_end_position; + if (SDL_SYS_CDioctl(cdrom->id,MCI_PLAY,flags,&mci_play) == 0) { + okay = 1; + SDL_paused[cdrom->id] = 0; + } + } + return(okay ? 0 : -1); +#else + return(SDL_SYS_CDioctl(cdrom->id, MCI_RESUME, MCI_WAIT, NULL)); +#endif /* BROKEN_MCI_PAUSE */ +} + +/* Stop play */ +static int SDL_SYS_CDStop(SDL_CD *cdrom) +{ + return(SDL_SYS_CDioctl(cdrom->id, MCI_STOP, MCI_WAIT, NULL)); +} + +/* Eject the CD-ROM */ +static int SDL_SYS_CDEject(SDL_CD *cdrom) +{ + return(SDL_SYS_CDioctl(cdrom->id, MCI_SET, MCI_SET_DOOR_OPEN, NULL)); +} + +/* Close the CD-ROM handle */ +static void SDL_SYS_CDClose(SDL_CD *cdrom) +{ + SDL_SYS_CDioctl(cdrom->id, MCI_CLOSE, MCI_WAIT, NULL); +} + +void SDL_SYS_CDQuit(void) +{ + int i; + + if ( SDL_numcds > 0 ) { + for ( i=0; i<SDL_numcds; ++i ) { + SDL_free(SDL_cdlist[i]); + SDL_cdlist[i] = NULL; + } + SDL_numcds = 0; + } +} + +#endif /* SDL_CDROM_WIN32 */ |