diff src/audio/mint/SDL_mintaudio.h @ 644:594422ab8f9f

Atari MiNT: added more audio drivers
author Patrice Mandin <patmandin@gmail.com>
date Mon, 07 Jul 2003 19:16:03 +0000
parents d219b0e02f5f
children c4803992e09c
line wrap: on
line diff
--- 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 */