diff options
Diffstat (limited to 'distrib/sdl-1.2.12/src/cdrom/macosx/SDL_syscdrom.c')
| -rw-r--r-- | distrib/sdl-1.2.12/src/cdrom/macosx/SDL_syscdrom.c | 505 |
1 files changed, 0 insertions, 505 deletions
diff --git a/distrib/sdl-1.2.12/src/cdrom/macosx/SDL_syscdrom.c b/distrib/sdl-1.2.12/src/cdrom/macosx/SDL_syscdrom.c deleted file mode 100644 index ea43d8b..0000000 --- a/distrib/sdl-1.2.12/src/cdrom/macosx/SDL_syscdrom.c +++ /dev/null @@ -1,505 +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" - -#ifdef SDL_CDROM_MACOSX - -#include "SDL_syscdrom_c.h" - -#pragma mark -- Globals -- - -static FSRef** tracks; -static FSVolumeRefNum* volumes; -static CDstatus status; -static int nextTrackFrame; -static int nextTrackFramesRemaining; -static int fakeCD; -static int currentTrack; -static int didReadTOC; -static int cacheTOCNumTracks; -static int currentDrive; /* Only allow 1 drive in use at a time */ - -#pragma mark -- Prototypes -- - -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); - -#pragma mark -- Helper Functions -- - -/* Read a list of tracks from the volume */ -static int LoadTracks (SDL_CD *cdrom) -{ - /* Check if tracks are already loaded */ - if ( tracks[cdrom->id] != NULL ) - return 0; - - /* Allocate memory for tracks */ - tracks[cdrom->id] = (FSRef*) SDL_calloc (1, sizeof(**tracks) * cdrom->numtracks); - if (tracks[cdrom->id] == NULL) { - SDL_OutOfMemory (); - return -1; - } - - /* Load tracks */ - if (ListTrackFiles (volumes[cdrom->id], tracks[cdrom->id], cdrom->numtracks) < 0) - return -1; - - return 0; -} - -/* Find a file for a given start frame and length */ -static FSRef* GetFileForOffset (SDL_CD *cdrom, int start, int length, int *outStartFrame, int *outStopFrame) -{ - int i; - - for (i = 0; i < cdrom->numtracks; i++) { - - if (cdrom->track[i].offset <= start && - start < (cdrom->track[i].offset + cdrom->track[i].length)) - break; - } - - if (i == cdrom->numtracks) - return NULL; - - currentTrack = i; - - *outStartFrame = start - cdrom->track[i].offset; - - if ((*outStartFrame + length) < cdrom->track[i].length) { - *outStopFrame = *outStartFrame + length; - length = 0; - nextTrackFrame = -1; - nextTrackFramesRemaining = -1; - } - else { - *outStopFrame = -1; - length -= cdrom->track[i].length - *outStartFrame; - nextTrackFrame = cdrom->track[i+1].offset; - nextTrackFramesRemaining = length; - } - - return &tracks[cdrom->id][i]; -} - -/* Setup another file for playback, or stop playback (called from another thread) */ -static void CompletionProc (SDL_CD *cdrom) -{ - - Lock (); - - if (nextTrackFrame > 0 && nextTrackFramesRemaining > 0) { - - /* Load the next file to play */ - int startFrame, stopFrame; - FSRef *file; - - PauseFile (); - ReleaseFile (); - - file = GetFileForOffset (cdrom, nextTrackFrame, - nextTrackFramesRemaining, &startFrame, &stopFrame); - - if (file == NULL) { - status = CD_STOPPED; - Unlock (); - return; - } - - LoadFile (file, startFrame, stopFrame); - - SetCompletionProc (CompletionProc, cdrom); - - PlayFile (); - } - else { - - /* Release the current file */ - PauseFile (); - ReleaseFile (); - status = CD_STOPPED; - } - - Unlock (); -} - - -#pragma mark -- Driver Functions -- - -/* Initialize */ -int SDL_SYS_CDInit (void) -{ - /* Initialize globals */ - volumes = NULL; - tracks = NULL; - status = CD_STOPPED; - nextTrackFrame = -1; - nextTrackFramesRemaining = -1; - fakeCD = SDL_FALSE; - currentTrack = -1; - didReadTOC = SDL_FALSE; - cacheTOCNumTracks = -1; - currentDrive = -1; - - /* Fill in function pointers */ - 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; - - /* - Read the list of "drives" - - This is currently a hack that infers drives from - mounted audio CD volumes, rather than - actual CD-ROM devices - which means it may not - act as expected sometimes. - */ - - /* Find out how many cd volumes are mounted */ - SDL_numcds = DetectAudioCDVolumes (NULL, 0); - - /* - If there are no volumes, fake a cd device - so tray empty can be reported. - */ - if (SDL_numcds == 0) { - - fakeCD = SDL_TRUE; - SDL_numcds = 1; - status = CD_TRAYEMPTY; - - return 0; - } - - /* Allocate space for volumes */ - volumes = (FSVolumeRefNum*) SDL_calloc (1, sizeof(*volumes) * SDL_numcds); - if (volumes == NULL) { - SDL_OutOfMemory (); - return -1; - } - - /* Allocate space for tracks */ - tracks = (FSRef**) SDL_calloc (1, sizeof(*tracks) * (SDL_numcds + 1)); - if (tracks == NULL) { - SDL_OutOfMemory (); - return -1; - } - - /* Mark the end of the tracks array */ - tracks[ SDL_numcds ] = (FSRef*)-1; - - /* - Redetect, now save all volumes for later - Update SDL_numcds just in case it changed - */ - { - int numVolumes = SDL_numcds; - - SDL_numcds = DetectAudioCDVolumes (volumes, numVolumes); - - /* If more cds suddenly show up, ignore them */ - if (SDL_numcds > numVolumes) { - SDL_SetError ("Some CD's were added but they will be ignored"); - SDL_numcds = numVolumes; - } - } - - return 0; -} - -/* Shutdown and cleanup */ -void SDL_SYS_CDQuit(void) -{ - ReleaseFile(); - - if (volumes != NULL) - free (volumes); - - if (tracks != NULL) { - - FSRef **ptr; - for (ptr = tracks; *ptr != (FSRef*)-1; ptr++) - if (*ptr != NULL) - free (*ptr); - - free (tracks); - } -} - -/* Get the Unix disk name of the volume */ -static const char *SDL_SYS_CDName (int drive) -{ - OSStatus err = noErr; - HParamBlockRec pb; - GetVolParmsInfoBuffer volParmsInfo; - - if (fakeCD) - return "Fake CD-ROM Device"; - - pb.ioParam.ioNamePtr = NULL; - pb.ioParam.ioVRefNum = volumes[drive]; - pb.ioParam.ioBuffer = (Ptr)&volParmsInfo; - pb.ioParam.ioReqCount = (SInt32)sizeof(volParmsInfo); - err = PBHGetVolParmsSync(&pb); - - if (err != noErr) { - SDL_SetError ("PBHGetVolParmsSync returned %d", err); - return NULL; - } - - return volParmsInfo.vMDeviceID; -} - -/* Open the "device" */ -static int SDL_SYS_CDOpen (int drive) -{ - /* Only allow 1 device to be open */ - if (currentDrive >= 0) { - SDL_SetError ("Only one cdrom is supported"); - return -1; - } - else - currentDrive = drive; - - return drive; -} - -/* Get the table of contents */ -static int SDL_SYS_CDGetTOC (SDL_CD *cdrom) -{ - if (fakeCD) { - SDL_SetError (kErrorFakeDevice); - return -1; - } - - if (didReadTOC) { - cdrom->numtracks = cacheTOCNumTracks; - return 0; - } - - - ReadTOCData (volumes[cdrom->id], cdrom); - didReadTOC = SDL_TRUE; - cacheTOCNumTracks = cdrom->numtracks; - - return 0; -} - -/* Get CD-ROM status */ -static CDstatus SDL_SYS_CDStatus (SDL_CD *cdrom, int *position) -{ - if (position) { - int trackFrame; - - Lock (); - trackFrame = GetCurrentFrame (); - Unlock (); - - *position = cdrom->track[currentTrack].offset + trackFrame; - } - - return status; -} - -/* Start playback */ -static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length) -{ - int startFrame, stopFrame; - FSRef *ref; - - if (fakeCD) { - SDL_SetError (kErrorFakeDevice); - return -1; - } - - Lock(); - - if (LoadTracks (cdrom) < 0) - return -2; - - if (PauseFile () < 0) - return -3; - - if (ReleaseFile () < 0) - return -4; - - ref = GetFileForOffset (cdrom, start, length, &startFrame, &stopFrame); - if (ref == NULL) { - SDL_SetError ("SDL_SYS_CDPlay: No file for start=%d, length=%d", start, length); - return -5; - } - - if (LoadFile (ref, startFrame, stopFrame) < 0) - return -6; - - SetCompletionProc (CompletionProc, cdrom); - - if (PlayFile () < 0) - return -7; - - status = CD_PLAYING; - - Unlock(); - - return 0; -} - -/* Pause playback */ -static int SDL_SYS_CDPause(SDL_CD *cdrom) -{ - if (fakeCD) { - SDL_SetError (kErrorFakeDevice); - return -1; - } - - Lock (); - - if (PauseFile () < 0) { - Unlock (); - return -2; - } - - status = CD_PAUSED; - - Unlock (); - - return 0; -} - -/* Resume playback */ -static int SDL_SYS_CDResume(SDL_CD *cdrom) -{ - if (fakeCD) { - SDL_SetError (kErrorFakeDevice); - return -1; - } - - Lock (); - - if (PlayFile () < 0) { - Unlock (); - return -2; - } - - status = CD_PLAYING; - - Unlock (); - - return 0; -} - -/* Stop playback */ -static int SDL_SYS_CDStop(SDL_CD *cdrom) -{ - if (fakeCD) { - SDL_SetError (kErrorFakeDevice); - return -1; - } - - Lock (); - - if (PauseFile () < 0) { - Unlock (); - return -2; - } - - if (ReleaseFile () < 0) { - Unlock (); - return -3; - } - - status = CD_STOPPED; - - Unlock (); - - return 0; -} - -/* Eject the CD-ROM (Unmount the volume) */ -static int SDL_SYS_CDEject(SDL_CD *cdrom) -{ - OSStatus err; - pid_t dissenter; - - if (fakeCD) { - SDL_SetError (kErrorFakeDevice); - return -1; - } - - Lock (); - - if (PauseFile () < 0) { - Unlock (); - return -2; - } - - if (ReleaseFile () < 0) { - Unlock (); - return -3; - } - - status = CD_STOPPED; - - /* Eject the volume */ - err = FSEjectVolumeSync(volumes[cdrom->id], kNilOptions, &dissenter); - - if (err != noErr) { - Unlock (); - SDL_SetError ("PBUnmountVol returned %d", err); - return -4; - } - - status = CD_TRAYEMPTY; - - /* Invalidate volume and track info */ - volumes[cdrom->id] = 0; - free (tracks[cdrom->id]); - tracks[cdrom->id] = NULL; - - Unlock (); - - return 0; -} - -/* Close the CD-ROM */ -static void SDL_SYS_CDClose(SDL_CD *cdrom) -{ - currentDrive = -1; - return; -} - -#endif /* SDL_CDROM_MACOSX */ |