Mercurial > sdl-ios-xcode
view test/testcdrom.c @ 3877:81f66f258d77 SDL-1.2
Fixed bug #281
------- Comment #2 From Christian Walther 2006-07-23 07:37 [reply] -------
Wow, that was an interesting bug to chase. It was a timing issue: it seems that
for some reason, a certain time must pass between ShowMenuBar() being called in
QZ_UnsetVideoMode() and the application quitting. Before rev. 1885, this delay
was provided by the slow hand-coded fade. With the asynchronous Core Graphics
fading introduced in rev. 1885, that delay was no longer present (most of the
time) and the bug became apparent. Adding an SDL_Delay(100) somewhere between
ShowMenuBar() and the end of QZ_VideoQuit() lowered the frequency of the bug
appearing from "almost every time" to "very rarely" here.
However, there is another solution: doing the ShowMenuBar() before releasing
the captured display instead of afterwards. Apparently, no delay is necessary
in that case, and it looks nicer to me anyway because it is the reverse order
of the way things are set up in the beginning: capture display - set video mode
- hide menu bar - ... - show menu bar - reset video mode - release captured
display. So, this is what the attached patch does.
In addition, I've taken the liberty of
- removing some unused code that I forgot to remove in rev. 1885,
- fixing two warnings about undeclared functions in SDL_QuartzVideo.m by
including OpenGL.h (whose name is a bit misleading - it only declares CGL
stuff, so there's no interference with SDL_opengl.h).
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Sun, 24 Sep 2006 01:27:40 +0000 |
parents | b2b476a4a73c |
children | 782fd950bd46 c121d94672cb |
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line source
/* Test the SDL CD-ROM audio functions */ #include <stdlib.h> #include <stdio.h> #include <string.h> #include <ctype.h> #include "SDL.h" /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */ static void quit(int rc) { SDL_Quit(); exit(rc); } static void PrintStatus(int driveindex, SDL_CD *cdrom) { CDstatus status; char *status_str; status = SDL_CDStatus(cdrom); switch (status) { case CD_TRAYEMPTY: status_str = "tray empty"; break; case CD_STOPPED: status_str = "stopped"; break; case CD_PLAYING: status_str = "playing"; break; case CD_PAUSED: status_str = "paused"; break; case CD_ERROR: status_str = "error state"; break; } printf("Drive %d status: %s\n", driveindex, status_str); if ( status >= CD_PLAYING ) { int m, s, f; FRAMES_TO_MSF(cdrom->cur_frame, &m, &s, &f); printf("Currently playing track %d, %d:%2.2d\n", cdrom->track[cdrom->cur_track].id, m, s); } } static void ListTracks(SDL_CD *cdrom) { int i; int m, s, f; char* trtype; SDL_CDStatus(cdrom); printf("Drive tracks: %d\n", cdrom->numtracks); for ( i=0; i<cdrom->numtracks; ++i ) { FRAMES_TO_MSF(cdrom->track[i].length, &m, &s, &f); if ( f > 0 ) ++s; switch(cdrom->track[i].type) { case SDL_AUDIO_TRACK: trtype="audio"; break; case SDL_DATA_TRACK: trtype="data"; break; default: trtype="unknown"; break; } printf("\tTrack (index %d) %d: %d:%2.2d / %d [%s track]\n", i, cdrom->track[i].id, m, s, cdrom->track[i].length, trtype); } } static void PrintUsage(char *argv0) { fprintf(stderr, "Usage: %s [drive#] [command] [command] ...\n", argv0); fprintf(stderr, "Where 'command' is one of:\n"); fprintf(stderr, " -status\n"); fprintf(stderr, " -list\n"); fprintf(stderr, " -play [first_track] [first_frame] [num_tracks] [num_frames]\n"); fprintf(stderr, " -pause\n"); fprintf(stderr, " -resume\n"); fprintf(stderr, " -stop\n"); fprintf(stderr, " -eject\n"); fprintf(stderr, " -sleep <milliseconds>\n"); } int main(int argc, char *argv[]) { int drive; int i; SDL_CD *cdrom; /* Initialize SDL first */ if ( SDL_Init(SDL_INIT_CDROM) < 0 ) { fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError()); return(1); } /* Find out how many CD-ROM drives are connected to the system */ if ( SDL_CDNumDrives() == 0 ) { printf("No CD-ROM devices detected\n"); quit(0); } printf("Drives available: %d\n", SDL_CDNumDrives()); for ( i=0; i<SDL_CDNumDrives(); ++i ) { printf("Drive %d: \"%s\"\n", i, SDL_CDName(i)); } /* Open the CD-ROM */ drive = 0; i=1; if ( argv[i] && isdigit(argv[i][0]) ) { drive = atoi(argv[i++]); } cdrom = SDL_CDOpen(drive); if ( cdrom == NULL ) { fprintf(stderr, "Couldn't open drive %d: %s\n", drive, SDL_GetError()); quit(2); } #ifdef TEST_NULLCD cdrom = NULL; #endif /* Find out which function to perform */ for ( ; argv[i]; ++i ) { if ( strcmp(argv[i], "-status") == 0 ) { /* PrintStatus(drive, cdrom); */ } else if ( strcmp(argv[i], "-list") == 0 ) { ListTracks(cdrom); } else if ( strcmp(argv[i], "-play") == 0 ) { int strack, sframe; int ntrack, nframe; strack = 0; if ( argv[i+1] && isdigit(argv[i+1][0]) ) { strack = atoi(argv[++i]); } sframe = 0; if ( argv[i+1] && isdigit(argv[i+1][0]) ) { sframe = atoi(argv[++i]); } ntrack = 0; if ( argv[i+1] && isdigit(argv[i+1][0]) ) { ntrack = atoi(argv[++i]); } nframe = 0; if ( argv[i+1] && isdigit(argv[i+1][0]) ) { nframe = atoi(argv[++i]); } if ( CD_INDRIVE(SDL_CDStatus(cdrom)) ) { if ( SDL_CDPlayTracks(cdrom, strack, sframe, ntrack, nframe) < 0 ) { fprintf(stderr, "Couldn't play tracks %d/%d for %d/%d: %s\n", strack, sframe, ntrack, nframe, SDL_GetError()); } } else { fprintf(stderr, "No CD in drive!\n"); } } else if ( strcmp(argv[i], "-pause") == 0 ) { if ( SDL_CDPause(cdrom) < 0 ) { fprintf(stderr, "Couldn't pause CD: %s\n", SDL_GetError()); } } else if ( strcmp(argv[i], "-resume") == 0 ) { if ( SDL_CDResume(cdrom) < 0 ) { fprintf(stderr, "Couldn't resume CD: %s\n", SDL_GetError()); } } else if ( strcmp(argv[i], "-stop") == 0 ) { if ( SDL_CDStop(cdrom) < 0 ) { fprintf(stderr, "Couldn't eject CD: %s\n", SDL_GetError()); } } else if ( strcmp(argv[i], "-eject") == 0 ) { if ( SDL_CDEject(cdrom) < 0 ) { fprintf(stderr, "Couldn't eject CD: %s\n", SDL_GetError()); } } else if ( (strcmp(argv[i], "-sleep") == 0) && (argv[i+1] && isdigit(argv[i+1][0])) ) { SDL_Delay(atoi(argv[++i])); printf("Delayed %d milliseconds\n", atoi(argv[i])); } else { PrintUsage(argv[0]); SDL_CDClose(cdrom); quit(1); } } PrintStatus(drive, cdrom); SDL_CDClose(cdrom); SDL_Quit(); return(0); }