Mercurial > sdl-ios-xcode
view src/audio/mint/SDL_mintaudio.h @ 2153:760c1bd2d625
Reverted mousewheel support in 1.2, since it breaks binary compatibility.
author | Sam Lantinga <slouken@libsdl.org> |
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date | Fri, 06 Jul 2007 13:45:10 +0000 |
parents | adf732f1f016 |
children | 99210400e8b9 |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2004 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 */ #include "SDL_config.h" /* 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 /* 16 predivisors with 3 clocks max. */ #define MINTAUDIO_maxfreqs (16*3) typedef struct { Uint32 frequency; Uint32 masterclock; Uint32 predivisor; int gpio_bits; /* in case of external clock */ } mint_frequency_t; struct SDL_PrivateAudioData { mint_frequency_t frequencies[MINTAUDIO_maxfreqs]; int freq_count; /* Number of frequencies in the array */ int numfreq; /* Number of selected frequency */ }; /* Old variable names */ #define MINTAUDIO_frequencies (this->hidden->frequencies) #define MINTAUDIO_freqcount (this->hidden->freq_count) #define MINTAUDIO_numfreq (this->hidden->numfreq) /* _MCH cookie (values>>16) */ enum { MCH_ST = 0, MCH_STE, MCH_TT, MCH_F30, MCH_CLONE, MCH_ARANYM }; /* 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 unsigned long SDL_MintAudio_audiosize; /* Length of audio buffer=spec->size */ extern volatile unsigned short SDL_MintAudio_numbuf; /* Buffer to play */ extern volatile unsigned short SDL_MintAudio_mutex; extern cookie_stfa_t *SDL_MintAudio_stfa; extern volatile unsigned long SDL_MintAudio_clocktics; extern unsigned short SDL_MintAudio_hasfpu; /* To preserve fpu registers if needed */ /* MiNT thread variables */ extern SDL_bool SDL_MintAudio_mint_present; extern SDL_bool SDL_MintAudio_quit_thread; extern SDL_bool SDL_MintAudio_thread_finished; extern long SDL_MintAudio_thread_pid; /* Functions */ void SDL_MintAudio_Callback(void); void SDL_MintAudio_AddFrequency(_THIS, Uint32 frequency, Uint32 clock, Uint32 prediv, int gpio_bits); int SDL_MintAudio_SearchFrequency(_THIS, int desired_freq); void SDL_MintAudio_CheckFpu(void); /* MiNT thread functions */ int SDL_MintAudio_Thread(long param); void SDL_MintAudio_WaitThread(void); /* ASM interrupt functions */ void SDL_MintAudio_GsxbInterrupt(void); void SDL_MintAudio_EmptyGsxbInterrupt(void); void SDL_MintAudio_XbiosInterruptMeasureClock(void); void SDL_MintAudio_XbiosInterrupt(void); void SDL_MintAudio_Dma8Interrupt(void); void SDL_MintAudio_StfaInterrupt(void); #endif /* _SDL_mintaudio_h */ /* vi: set ts=4 sw=4 expandtab: */