Mercurial > sdl-ios-xcode

comparison src/audio/mint/SDL_mintaudio_xbios.c @ 3846:66fb40445587 SDL-ryan-multiple-audio-device

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Removed distinction between "available" and "init" in audio backends, since both had to be checked for success as a pair at the higher level and several of the Available methods were just always-succeed placeholders anyhow. Now the availability check is done in the init code, and the higher level tries all possible drivers until one manages to initialize successfully.
author Ryan C. Gordon <icculus@icculus.org>
date Tue, 17 Oct 2006 09:09:21 +0000
parents 1f156fd874fa
children
comparison
equal deleted inserted replaced
3845:ee5dfa7f7993 3846:66fb40445587
59 #else 59 #else
60 #define DEBUG_PRINT(what) 60 #define DEBUG_PRINT(what)
61 #endif 61 #endif
62 62
63 static unsigned long cookie_snd = 0; 63 static unsigned long cookie_snd = 0;
64
65 static int
66 MINTXBIOS_Available(void)
67 {
68 unsigned long dummy = 0;
69 /*SDL_MintAudio_mint_present = (Getcookie(C_MiNT, &dummy) == C_FOUND); */
70 SDL_MintAudio_mint_present = SDL_FALSE;
71
72 /* We can't use XBIOS in interrupt with Magic, don't know about thread */
73 if (Getcookie(C_MagX, &dummy) == C_FOUND) {
74 return (0);
75 }
76
77 /* Cookie _SND present ? if not, assume ST machine */
78 if (Getcookie(C__SND, &cookie_snd) == C_NOTFOUND) {
79 cookie_snd = SND_PSG;
80 }
81
82 /* Check if we have 16 bits audio */
83 if ((cookie_snd & SND_16BIT) == 0) {
84 DEBUG_PRINT((DEBUG_NAME "no 16 bits sound\n"));
85 return (0);
86 }
87
88 /* Check if audio is lockable */
89 if (Locksnd() != 1) {
90 DEBUG_PRINT((DEBUG_NAME "audio locked by other application\n"));
91 return (0);
92 }
93
94 Unlocksnd();
95
96 DEBUG_PRINT((DEBUG_NAME "XBIOS audio available!\n"));
97 return (1);
98 }
99 64
100 static void 65 static void
101 MINTXBIOS_LockDevice(_THIS) 66 MINTXBIOS_LockDevice(_THIS)
102 { 67 {
103 /* Stop replay */ 68 /* Stop replay */
479 } 444 }
480 445
481 static int 446 static int
482 MINTXBIOS_Init(SDL_AudioDriverImpl *impl) 447 MINTXBIOS_Init(SDL_AudioDriverImpl *impl)
483 { 448 {
449 unsigned long dummy = 0;
450 /*SDL_MintAudio_mint_present = (Getcookie(C_MiNT, &dummy) == C_FOUND); */
451 SDL_MintAudio_mint_present = SDL_FALSE;
452
453 /* We can't use XBIOS in interrupt with Magic, don't know about thread */
454 if (Getcookie(C_MagX, &dummy) == C_FOUND) {
455 return (0);
456 }
457
458 /* Cookie _SND present ? if not, assume ST machine */
459 if (Getcookie(C__SND, &cookie_snd) == C_NOTFOUND) {
460 cookie_snd = SND_PSG;
461 }
462
463 /* Check if we have 16 bits audio */
464 if ((cookie_snd & SND_16BIT) == 0) {
465 SDL_SetError(DEBUG_NAME "no 16-bit sound");
466 return (0);
467 }
468
469 /* Check if audio is lockable */
470 if (Locksnd() != 1) {
471 SDL_SetError(DEBUG_NAME "audio locked by other application");
472 return (0);
473 }
474
475 Unlocksnd();
476
477 DEBUG_PRINT((DEBUG_NAME "XBIOS audio available!\n"));
478
484 /* Set the function pointers */ 479 /* Set the function pointers */
485 impl->OpenDevice = MINTXBIOS_OpenDevice; 480 impl->OpenDevice = MINTXBIOS_OpenDevice;
486 impl->CloseDevice = MINTXBIOS_CloseDevice; 481 impl->CloseDevice = MINTXBIOS_CloseDevice;
487 impl->LockAudio = MINTXBIOS_LockAudio; 482 impl->LockAudio = MINTXBIOS_LockAudio;
488 impl->UnlockAudio = MINTXBIOS_UnlockAudio; 483 impl->UnlockAudio = MINTXBIOS_UnlockAudio;
492 487
493 return 1; 488 return 1;
494 } 489 }
495 490
496 AudioBootStrap MINTAUDIO_XBIOS_bootstrap = { 491 AudioBootStrap MINTAUDIO_XBIOS_bootstrap = {
497 MINT_AUDIO_DRIVER_NAME, "MiNT XBIOS audio driver", 492 MINT_AUDIO_DRIVER_NAME, "MiNT XBIOS audio driver", MINTXBIOS_Init, 0
498 MINTXBIOS_Available, MINTXBIOS_Init, 0
499 }; 493 };
500 494
501 /* vi: set ts=4 sw=4 expandtab: */ 495 /* vi: set ts=4 sw=4 expandtab: */