Mercurial > sdl-ios-xcode
diff src/audio/mint/SDL_mintaudio.h @ 644:594422ab8f9f
Atari MiNT: added more audio drivers
author | Patrice Mandin <patmandin@gmail.com> |
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date | Mon, 07 Jul 2003 19:16:03 +0000 |
parents | d219b0e02f5f |
children | c4803992e09c |
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--- a/src/audio/mint/SDL_mintaudio.h Tue Jul 01 16:35:54 2003 +0000 +++ b/src/audio/mint/SDL_mintaudio.h Mon Jul 07 19:16:03 2003 +0000 @@ -1,15 +1,125 @@ /* - * MiNT audio driver - * - * Patrice Mandin - */ + SDL - Simple DirectMedia Layer + Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with this library; if not, write to the Free + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + + Sam Lantinga + slouken@libsdl.org +*/ + +/* + MiNT audio driver + + Patrice Mandin +*/ #ifndef _SDL_mintaudio_h #define _SDL_mintaudio_h #include "SDL_sysaudio.h" +#include "SDL_mintaudio_stfa.h" /* Hidden "this" pointer for the audio functions */ #define _THIS SDL_AudioDevice *this +struct SDL_PrivateAudioData { + Uint32 hardfreq[16]; /* Array of replay freqs of the hardware */ + int sfreq; /* First number of freq to use in the array */ + int nfreq; /* Number of freqs to use in the array */ + int numfreq; /* Number of selected frequency */ +}; + +/* Old variable names */ +#define MINTAUDIO_hardfreq (this->hidden->hardfreq) +#define MINTAUDIO_sfreq (this->hidden->sfreq) +#define MINTAUDIO_nfreq (this->hidden->nfreq) +#define MINTAUDIO_numfreq (this->hidden->numfreq) + +/* _MCH cookie (values>>16) */ +enum { + MCH_ST=0, + MCH_STE, + MCH_TT, + MCH_F30 +}; + +/* Master clocks for replay frequencies */ +#define MASTERCLOCK_STE 8010666 /* Not sure of this one */ +#define MASTERCLOCK_TT 16107953 /* Not sure of this one */ +#define MASTERCLOCK_FALCON1 25175000 +#define MASTERCLOCK_FALCON2 32000000 /* Only usable for DSP56K */ +#define MASTERCLOCK_FALCONEXT -1 /* Clock on DSP56K port, unknown */ +#define MASTERCLOCK_44K 22579200 /* Standard clock for 44.1 Khz */ +#define MASTERCLOCK_48K 24576000 /* Standard clock for 48 Khz */ + +/* Master clock predivisors */ +#define MASTERPREDIV_STE 160 +#define MASTERPREDIV_TT 320 +#define MASTERPREDIV_FALCON 256 +#define MASTERPREDIV_MILAN 256 + +/* MFP 68901 interrupt sources */ +enum { + MFP_PARALLEL=0, + MFP_DCD, + MFP_CTS, + MFP_BITBLT, + MFP_TIMERD, + MFP_BAUDRATE=MFP_TIMERD, + MFP_TIMERC, + MFP_200HZ=MFP_TIMERC, + MFP_ACIA, + MFP_DISK, + MFP_TIMERB, + MFP_HBLANK=MFP_TIMERB, + MFP_TERR, + MFP_TBE, + MFP_RERR, + MFP_RBF, + MFP_TIMERA, + MFP_DMASOUND=MFP_TIMERA, + MFP_RING, + MFP_MONODETECT +}; + +/* Xbtimer() timers */ +enum { + XB_TIMERA=0, + XB_TIMERB, + XB_TIMERC, + XB_TIMERD +}; + +/* Variables */ +extern SDL_AudioDevice *SDL_MintAudio_device; +extern Uint8 *SDL_MintAudio_audiobuf[2]; /* Pointers to buffers */ +extern long SDL_MintAudio_audiosize; /* Length of audio buffer=spec->size */ +extern long SDL_MintAudio_numbuf; /* Buffer to play */ +extern long SDL_MintAudio_mutex; +extern cookie_stfa_t *SDL_MintAudio_stfa; + +/* Functions */ +void SDL_MintAudio_Callback(void); +int SDL_MintAudio_SearchFrequency(_THIS, int falcon_codec, int desired_freq); + +/* ASM interrupt functions */ +void SDL_MintAudio_GsxbInterrupt(void); +void SDL_MintAudio_EmptyGsxbInterrupt(void); +void SDL_MintAudio_XbiosInterrupt(void); +void SDL_MintAudio_Dma8Interrupt(void); +void SDL_MintAudio_StfaInterrupt(void); + #endif /* _SDL_mintaudio_h */