src/audio/mint/SDL_mintaudio_xbios.c
author Patrice Mandin <patmandin@gmail.com>
Tue, 12 Sep 2006 19:20:50 +0000
branchSDL-1.2
changeset 3856 492ff98822fd
parent 3851 405a192b68e7
child 3865 e958a003b69b
permissions -rw-r--r--
Disable MiNT thread usage and use hw access for updating DMA audio pointers
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/*
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    SDL - Simple DirectMedia Layer
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    Copyright (C) 1997-2004 Sam Lantinga
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    This library is free software; you can redistribute it and/or
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    modify it under the terms of the GNU Library General Public
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    License as published by the Free Software Foundation; either
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    version 2 of the License, or (at your option) any later version.
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    This library is distributed in the hope that it will be useful,
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    but WITHOUT ANY WARRANTY; without even the implied warranty of
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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    Library General Public License for more details.
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    You should have received a copy of the GNU Library General Public
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    License along with this library; if not, write to the Free
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    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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    Sam Lantinga
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    slouken@libsdl.org
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*/
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#include "SDL_config.h"
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/*
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	MiNT audio driver
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	using XBIOS functions (Falcon)
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	Patrice Mandin, Didier Méquignon
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*/
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#include <unistd.h>
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#include <support.h>
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/* Mint includes */
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#include <mint/osbind.h>
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#include <mint/falcon.h>
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#include <mint/cookie.h>
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#include "SDL_audio.h"
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#include "../SDL_audio_c.h"
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#include "../SDL_sysaudio.h"
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#include "../../video/ataricommon/SDL_atarimxalloc_c.h"
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#include "SDL_mintaudio.h"
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#include "SDL_mintaudio_dma8.h"
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/*--- Defines ---*/
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#define MINT_AUDIO_DRIVER_NAME "mint_xbios"
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/* Debug print info */
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#define DEBUG_NAME "audio:xbios: "
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#if 0
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#define DEBUG_PRINT(what) \
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	{ \
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		printf what; \
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	}
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#else
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#define DEBUG_PRINT(what)
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#endif
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/*--- Static variables ---*/
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static unsigned long cookie_snd;
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/*--- Audio driver functions ---*/
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static void Mint_CloseAudio(_THIS);
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static int Mint_OpenAudio(_THIS, SDL_AudioSpec *spec);
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static void Mint_LockAudio(_THIS);
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static void Mint_UnlockAudio(_THIS);
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/* To check/init hardware audio */
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static int Mint_CheckAudio(_THIS, SDL_AudioSpec *spec);
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static void Mint_InitAudio(_THIS, SDL_AudioSpec *spec);
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/*--- Audio driver bootstrap functions ---*/
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static int Audio_Available(void)
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{
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	unsigned long dummy;
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	const char *envr = SDL_getenv("SDL_AUDIODRIVER");
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	/*SDL_MintAudio_mint_present = (Getcookie(C_MiNT, &dummy) == C_FOUND);*/
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	SDL_MintAudio_mint_present = SDL_FALSE;
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	/* We can't use XBIOS in interrupt with Magic, don't know about thread */
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	if (Getcookie(C_MagX, &dummy) == C_FOUND) {
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		return(0);
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	}
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	/* Check if user asked a different audio driver */
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	if ((envr) && (SDL_strcmp(envr, MINT_AUDIO_DRIVER_NAME)!=0)) {
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		DEBUG_PRINT((DEBUG_NAME "user asked a different audio driver\n"));
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		return(0);
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	}
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	/* Cookie _SND present ? if not, assume ST machine */
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	if (Getcookie(C__SND, &cookie_snd) == C_NOTFOUND) {
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		cookie_snd = SND_PSG;
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	}
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	/* Check if we have 16 bits audio */
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	if ((cookie_snd & SND_16BIT)==0) {
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		DEBUG_PRINT((DEBUG_NAME "no 16 bits sound\n"));
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	    return(0);
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	}
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	/* Check if audio is lockable */
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	if (Locksnd()!=1) {
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		DEBUG_PRINT((DEBUG_NAME "audio locked by other application\n"));
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		return(0);
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	}
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	Unlocksnd();
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	DEBUG_PRINT((DEBUG_NAME "XBIOS audio available!\n"));
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	return(1);
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}
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static void Audio_DeleteDevice(SDL_AudioDevice *device)
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{
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    SDL_free(device->hidden);
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    SDL_free(device);
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}
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static SDL_AudioDevice *Audio_CreateDevice(int devindex)
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{
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	SDL_AudioDevice *this;
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	/* Initialize all variables that we clean on shutdown */
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	this = (SDL_AudioDevice *)SDL_malloc(sizeof(SDL_AudioDevice));
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    if ( this ) {
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        SDL_memset(this, 0, (sizeof *this));
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        this->hidden = (struct SDL_PrivateAudioData *)
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                SDL_malloc((sizeof *this->hidden));
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    }
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    if ( (this == NULL) || (this->hidden == NULL) ) {
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        SDL_OutOfMemory();
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        if ( this ) {
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            SDL_free(this);
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        }
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        return(0);
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    }
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    SDL_memset(this->hidden, 0, (sizeof *this->hidden));
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    /* Set the function pointers */
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    this->OpenAudio   = Mint_OpenAudio;
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    this->CloseAudio  = Mint_CloseAudio;
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    this->LockAudio   = Mint_LockAudio;
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    this->UnlockAudio = Mint_UnlockAudio;
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    this->free        = Audio_DeleteDevice;
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    return this;
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}
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AudioBootStrap MINTAUDIO_XBIOS_bootstrap = {
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	MINT_AUDIO_DRIVER_NAME, "MiNT XBIOS audio driver",
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	Audio_Available, Audio_CreateDevice
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};
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static void Mint_LockAudio(_THIS)
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{
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	/* Stop replay */
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	Buffoper(0);
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}
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static void Mint_UnlockAudio(_THIS)
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{
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	/* Restart replay */
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	Buffoper(SB_PLA_ENA|SB_PLA_RPT);
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}
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static void Mint_CloseAudio(_THIS)
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{
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	/* Stop replay */
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	SDL_MintAudio_WaitThread();
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	Buffoper(0);
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	if (!SDL_MintAudio_mint_present) {
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		/* Uninstall interrupt */
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		Jdisint(MFP_DMASOUND);
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	}
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	/* Wait if currently playing sound */
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	while (SDL_MintAudio_mutex != 0) {
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	}
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	/* Clear buffers */
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	if (SDL_MintAudio_audiobuf[0]) {
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		Mfree(SDL_MintAudio_audiobuf[0]);
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		SDL_MintAudio_audiobuf[0] = SDL_MintAudio_audiobuf[1] = NULL;
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	}
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	/* Unlock sound system */
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	Unlocksnd();
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}
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/* Falcon XBIOS implementation of Devconnect() is buggy with external clock */
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static void Devconnect2(int src, int dst, int sclk, int pre)
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{		
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	static const unsigned short MASK1[3] = { 0, 0x6000, 0 };
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	static const unsigned short MASK2[4] = { 0xFFF0, 0xFF8F, 0xF0FF, 0x0FFF };
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	static const unsigned short INDEX1[4] = {  1, 3, 5, 7 };
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	static const unsigned short INDEX2[4] = {  0, 2, 4, 6 };
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	unsigned short sync_div,dev_ctrl,dest_ctrl;
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	void *oldstack;
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   209
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	if (dst==0) {
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		return;
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	}
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   213
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	oldstack=(void *)Super(0);
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   215
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	dev_ctrl = DMAAUDIO_IO.dev_ctrl;
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	dest_ctrl = DMAAUDIO_IO.dest_ctrl;
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	dev_ctrl &= MASK2[src];
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   219
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   220
	if (src==ADC) {
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   221
		dev_ctrl |= MASK1[sclk];
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   222
	} else {
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		dev_ctrl |= (INDEX1[sclk] << (src<<4));
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   224
	}
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   225
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   226
	if (dst & DMAREC) {		
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   227
		dest_ctrl &= 0xFFF0;
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   228
		dest_ctrl |= INDEX1[src];
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   229
	}
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   230
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   231
	if (dst & DSPRECV) {		
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   232
		dest_ctrl &= 0xFF8F;
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   233
		dest_ctrl |= (INDEX1[src]<<4); 
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   234
	}
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   235
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   236
	if (dst & EXTOUT) {		
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   237
		dest_ctrl &= 0xF0FF;
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   238
		dest_ctrl |= (INDEX1[src]<<8); 
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   239
	}
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   240
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   241
	if (dst & DAC) {		
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   242
		dev_ctrl &= 0x0FFF;
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   243
		dev_ctrl |= MASK1[sclk]; 
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   244
		dest_ctrl &=  0x0FFF;
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   245
		dest_ctrl |= (INDEX2[src]<<12); 
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   246
	}
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   247
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   248
	sync_div = DMAAUDIO_IO.sync_div;
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   249
	if (sclk==CLKEXT) {
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   250
		pre<<=8;
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   251
		sync_div &= 0xF0FF;
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   252
	} else {
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   253
		sync_div &= 0xFFF0;
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   254
	}
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   255
	sync_div |= pre;
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   256
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   257
	DMAAUDIO_IO.dev_ctrl = dev_ctrl;
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   258
	DMAAUDIO_IO.dest_ctrl = dest_ctrl;
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   259
	DMAAUDIO_IO.sync_div = sync_div;
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   260
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   261
	Super(oldstack);
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   262
}
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   263
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   264
static void Mint_CheckExternalClock(_THIS)
961
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   265
{
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   266
#define SIZE_BUF_CLOCK_MEASURE (44100/10)
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   267
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   268
	unsigned long cookie_snd;
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   269
	char *buffer;
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   270
	int i, j;
961
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   271
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   272
	/* DSP present with its GPIO port ? */
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   273
	if (Getcookie(C__SND, &cookie_snd) == C_NOTFOUND) {
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   274
		return;
961
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   275
	}
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   276
	if ((cookie_snd & SND_DSP)==0) {
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   277
		return;
961
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   278
	}
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diff changeset
   279
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   280
	buffer = Atari_SysMalloc(SIZE_BUF_CLOCK_MEASURE, MX_STRAM);
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
   281
	if (buffer==NULL) {
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
   282
		DEBUG_PRINT((DEBUG_NAME "Not enough memory for the measure\n"));
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   283
		return;
961
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diff changeset
   284
	}
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1111
diff changeset
   285
	SDL_memset(buffer, 0, SIZE_BUF_CLOCK_MEASURE);
961
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diff changeset
   286
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   287
	Buffoper(0);
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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   288
	Settracks(0,0);
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
   289
	Setmontracks(0);
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
   290
	Setmode(MONO8);
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
   291
	Jdisint(MFP_TIMERA);
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
   292
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diff changeset
   293
	for (i=0; i<2; i++) {
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
   294
		Gpio(GPIO_SET,7);      /* DSP port gpio outputs */
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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parents: 769
diff changeset
   295
		Gpio(GPIO_WRITE,2+i);  /* 22.5792/24.576 MHz for 44.1/48KHz */
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
   296
		Devconnect2(DMAPLAY, DAC, CLKEXT, CLK50K);  /* Matrix and clock source */
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
   297
		Setbuffer(0, buffer, buffer + SIZE_BUF_CLOCK_MEASURE);		           /* Set buffer */
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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parents: 769
diff changeset
   298
		Xbtimer(XB_TIMERA, 5, 38, SDL_MintAudio_XbiosInterruptMeasureClock); /* delay mode timer A, prediv /64, 1KHz */
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
   299
		Jenabint(MFP_TIMERA);
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
   300
		SDL_MintAudio_clocktics = 0;
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
   301
		Buffoper(SB_PLA_ENA);
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
   302
		usleep(110000);
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
   303
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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   304
		if((Buffoper(-1) & 1)==0) {
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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parents: 769
diff changeset
   305
			if (SDL_MintAudio_clocktics) {
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
   306
				unsigned long khz;
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
   307
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diff changeset
   308
				khz = ((SIZE_BUF_CLOCK_MEASURE/SDL_MintAudio_clocktics) +1) & 0xFFFFFFFE;
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
   309
				DEBUG_PRINT((DEBUG_NAME "measure %d: freq=%lu KHz\n", i+1, khz));
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
   310
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diff changeset
   311
				if(khz==44) {
856f76a099c7 Can use both clocks of FDI interface on Falcon, plus digital output
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diff changeset
   312
					for (j=1; j<4; j++) {
856f76a099c7 Can use both clocks of FDI interface on Falcon, plus digital output
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diff changeset
   313
						SDL_MintAudio_AddFrequency(this, MASTERCLOCK_44K/(MASTERPREDIV_FALCON*(1<<j)), MASTERCLOCK_44K, (1<<j)-1, 2+i);
961
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
   314
					}
1107
856f76a099c7 Can use both clocks of FDI interface on Falcon, plus digital output
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diff changeset
   315
				} else if (khz==48) {
856f76a099c7 Can use both clocks of FDI interface on Falcon, plus digital output
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parents: 1106
diff changeset
   316
					for (j=1; j<4; j++) {
856f76a099c7 Can use both clocks of FDI interface on Falcon, plus digital output
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diff changeset
   317
						SDL_MintAudio_AddFrequency(this, MASTERCLOCK_48K/(MASTERPREDIV_FALCON*(1<<j)), MASTERCLOCK_48K, (1<<j)-1, 2+i);
961
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
   318
					}
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
   319
				}
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
   320
			} else {
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
   321
				DEBUG_PRINT((DEBUG_NAME "No measure\n"));
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
   322
			}
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
   323
		} else {
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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parents: 769
diff changeset
   324
			DEBUG_PRINT((DEBUG_NAME "No SDMA clock\n"));
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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parents: 769
diff changeset
   325
		}
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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parents: 769
diff changeset
   326
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
   327
		Buffoper(0);             /* stop */
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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parents: 769
diff changeset
   328
		Jdisint(MFP_TIMERA);     /* Uninstall interrupt */
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
   329
	}
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
   330
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
   331
	Mfree(buffer);
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
   332
}
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
   333
644
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
   334
static int Mint_CheckAudio(_THIS, SDL_AudioSpec *spec)
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
   335
{
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
   336
	int i;
961
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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diff changeset
   337
	Uint32 extclock;
644
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
   338
594422ab8f9f Atari MiNT: added more audio drivers
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diff changeset
   339
	DEBUG_PRINT((DEBUG_NAME "asked: %d bits, ",spec->format & 0x00ff));
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
   340
	DEBUG_PRINT(("signed=%d, ", ((spec->format & 0x8000)!=0)));
704
c4803992e09c Small bugfixes
Patrice Mandin <patmandin@gmail.com>
parents: 644
diff changeset
   341
	DEBUG_PRINT(("big endian=%d, ", ((spec->format & 0x1000)!=0)));
644
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
   342
	DEBUG_PRINT(("channels=%d, ", spec->channels));
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
   343
	DEBUG_PRINT(("freq=%d\n", spec->freq));
594422ab8f9f Atari MiNT: added more audio drivers
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diff changeset
   344
3851
405a192b68e7 Backport from 1.3: most of the audio drivers can now handle data
Ryan C. Gordon <icculus@icculus.org>
parents: 1412
diff changeset
   345
    if (spec->channels > 2) {
405a192b68e7 Backport from 1.3: most of the audio drivers can now handle data
Ryan C. Gordon <icculus@icculus.org>
parents: 1412
diff changeset
   346
        spec->channels = 2;  /* no more than stereo! */
405a192b68e7 Backport from 1.3: most of the audio drivers can now handle data
Ryan C. Gordon <icculus@icculus.org>
parents: 1412
diff changeset
   347
    }
405a192b68e7 Backport from 1.3: most of the audio drivers can now handle data
Ryan C. Gordon <icculus@icculus.org>
parents: 1412
diff changeset
   348
644
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
   349
	spec->format |= 0x8000;	/* Audio is always signed */
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   350
	if ((spec->format & 0x00ff)==16) {
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   351
		spec->format |= 0x1000;	/* Audio is always big endian */
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   352
		spec->channels=2;	/* 16 bits always stereo */
594422ab8f9f Atari MiNT: added more audio drivers
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parents:
diff changeset
   353
	}
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   354
1107
856f76a099c7 Can use both clocks of FDI interface on Falcon, plus digital output
Patrice Mandin <patmandin@gmail.com>
parents: 1106
diff changeset
   355
	MINTAUDIO_freqcount=0;
856f76a099c7 Can use both clocks of FDI interface on Falcon, plus digital output
Patrice Mandin <patmandin@gmail.com>
parents: 1106
diff changeset
   356
856f76a099c7 Can use both clocks of FDI interface on Falcon, plus digital output
Patrice Mandin <patmandin@gmail.com>
parents: 1106
diff changeset
   357
	/* Add external clocks if present */
856f76a099c7 Can use both clocks of FDI interface on Falcon, plus digital output
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diff changeset
   358
	Mint_CheckExternalClock(this);
961
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
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parents: 769
diff changeset
   359
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
   360
	/* Standard clocks */
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
   361
	for (i=1;i<12;i++) {
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
   362
		/* Remove unusable Falcon codec predivisors */
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
   363
		if ((i==6) || (i==8) || (i==10)) {
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
   364
			continue;
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
   365
		}
1107
856f76a099c7 Can use both clocks of FDI interface on Falcon, plus digital output
Patrice Mandin <patmandin@gmail.com>
parents: 1106
diff changeset
   366
		SDL_MintAudio_AddFrequency(this, MASTERCLOCK_FALCON1/(MASTERPREDIV_FALCON*(i+1)), MASTERCLOCK_FALCON1, i, -1);
961
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
   367
	}
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
   368
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
   369
#if 1
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
   370
	for (i=0; i<MINTAUDIO_freqcount; i++) {
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
   371
		DEBUG_PRINT((DEBUG_NAME "freq %d: %lu Hz, clock %lu, prediv %d\n",
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
   372
			i, MINTAUDIO_frequencies[i].frequency, MINTAUDIO_frequencies[i].masterclock,
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
   373
			MINTAUDIO_frequencies[i].predivisor
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
   374
		));
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
   375
	}
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
   376
#endif
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
   377
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
   378
	MINTAUDIO_numfreq=SDL_MintAudio_SearchFrequency(this, spec->freq);
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
   379
	spec->freq=MINTAUDIO_frequencies[MINTAUDIO_numfreq].frequency;
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   380
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   381
	DEBUG_PRINT((DEBUG_NAME "obtained: %d bits, ",spec->format & 0x00ff));
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   382
	DEBUG_PRINT(("signed=%d, ", ((spec->format & 0x8000)!=0)));
704
c4803992e09c Small bugfixes
Patrice Mandin <patmandin@gmail.com>
parents: 644
diff changeset
   383
	DEBUG_PRINT(("big endian=%d, ", ((spec->format & 0x1000)!=0)));
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   384
	DEBUG_PRINT(("channels=%d, ", spec->channels));
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   385
	DEBUG_PRINT(("freq=%d\n", spec->freq));
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   386
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   387
	return 0;
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   388
}
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   389
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   390
static void Mint_InitAudio(_THIS, SDL_AudioSpec *spec)
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   391
{
961
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
   392
	int channels_mode, dmaclock, prediv;
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   393
	void *buffer;
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   394
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   395
	/* Stop currently playing sound */
1111
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
   396
	SDL_MintAudio_quit_thread = SDL_FALSE;
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
   397
	SDL_MintAudio_thread_finished = SDL_TRUE;
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
   398
	SDL_MintAudio_WaitThread();
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   399
	Buffoper(0);
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   400
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   401
	/* Set replay tracks */
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   402
	Settracks(0,0);
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   403
	Setmontracks(0);
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   404
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   405
	/* Select replay format */
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   406
	channels_mode=STEREO16;
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   407
	switch (spec->format & 0xff) {
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   408
		case 8:
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   409
			if (spec->channels==2) {
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   410
				channels_mode=STEREO8;
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   411
			} else {
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   412
				channels_mode=MONO8;
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   413
			}
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   414
			break;
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   415
	}
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   416
	if (Setmode(channels_mode)<0) {
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   417
		DEBUG_PRINT((DEBUG_NAME "Setmode() failed\n"));
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   418
	}
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   419
961
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
   420
	dmaclock = MINTAUDIO_frequencies[MINTAUDIO_numfreq].masterclock;
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
   421
	prediv = MINTAUDIO_frequencies[MINTAUDIO_numfreq].predivisor;
1107
856f76a099c7 Can use both clocks of FDI interface on Falcon, plus digital output
Patrice Mandin <patmandin@gmail.com>
parents: 1106
diff changeset
   422
	if (MINTAUDIO_frequencies[MINTAUDIO_numfreq].gpio_bits != -1) {
961
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
   423
		Gpio(GPIO_SET,7);		/* DSP port gpio outputs */
1107
856f76a099c7 Can use both clocks of FDI interface on Falcon, plus digital output
Patrice Mandin <patmandin@gmail.com>
parents: 1106
diff changeset
   424
		Gpio(GPIO_WRITE, MINTAUDIO_frequencies[MINTAUDIO_numfreq].gpio_bits);
856f76a099c7 Can use both clocks of FDI interface on Falcon, plus digital output
Patrice Mandin <patmandin@gmail.com>
parents: 1106
diff changeset
   425
		Devconnect2(DMAPLAY, DAC|EXTOUT, CLKEXT, prediv);
961
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
   426
	} else {
1100
76459577e620 Checking external clock on DSP port was leaving audio crossbar in limbo state
Patrice Mandin <patmandin@gmail.com>
parents: 1095
diff changeset
   427
		Devconnect2(DMAPLAY, DAC, CLK25M, prediv);
961
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
   428
	}
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   429
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   430
	/* Set buffer */
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   431
	buffer = SDL_MintAudio_audiobuf[SDL_MintAudio_numbuf];
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   432
	if (Setbuffer(0, buffer, buffer + spec->size)<0) {
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   433
		DEBUG_PRINT((DEBUG_NAME "Setbuffer() failed\n"));
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   434
	}
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   435
	
1111
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
   436
	if (SDL_MintAudio_mint_present) {
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
   437
		SDL_MintAudio_thread_pid = tfork(SDL_MintAudio_Thread, 0);
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
   438
	} else {
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
   439
		/* Install interrupt */
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
   440
		Jdisint(MFP_DMASOUND);
3856
492ff98822fd Disable MiNT thread usage and use hw access for updating DMA audio pointers
Patrice Mandin <patmandin@gmail.com>
parents: 3851
diff changeset
   441
		/*Xbtimer(XB_TIMERA, 8, 1, SDL_MintAudio_XbiosInterrupt);*/
492ff98822fd Disable MiNT thread usage and use hw access for updating DMA audio pointers
Patrice Mandin <patmandin@gmail.com>
parents: 3851
diff changeset
   442
		Xbtimer(XB_TIMERA, 8, 1, SDL_MintAudio_Dma8Interrupt);
1111
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
   443
		Jenabint(MFP_DMASOUND);
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   444
1111
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
   445
		if (Setinterrupt(SI_TIMERA, SI_PLAY)<0) {
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
   446
			DEBUG_PRINT((DEBUG_NAME "Setinterrupt() failed\n"));
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
   447
		}
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   448
	}
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   449
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   450
	/* Go */
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   451
	Buffoper(SB_PLA_ENA|SB_PLA_RPT);
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   452
	DEBUG_PRINT((DEBUG_NAME "hardware initialized\n"));
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   453
}
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   454
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   455
static int Mint_OpenAudio(_THIS, SDL_AudioSpec *spec)
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   456
{
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   457
	/* Lock sound system */
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   458
	if (Locksnd()!=1) {
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   459
   	    SDL_SetError("Mint_OpenAudio: Audio system already in use");
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   460
        return(-1);
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   461
	}
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   462
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   463
	SDL_MintAudio_device = this;
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   464
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   465
	/* Check audio capabilities */
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   466
	if (Mint_CheckAudio(this, spec)==-1) {
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   467
		return -1;
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   468
	}
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   469
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   470
	SDL_CalculateAudioSpec(spec);
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   471
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   472
	/* Allocate memory for audio buffers in DMA-able RAM */
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   473
	DEBUG_PRINT((DEBUG_NAME "buffer size=%d\n", spec->size));
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   474
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   475
	SDL_MintAudio_audiobuf[0] = Atari_SysMalloc(spec->size *2, MX_STRAM);
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   476
	if (SDL_MintAudio_audiobuf[0]==NULL) {
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   477
		SDL_SetError("MINT_OpenAudio: Not enough memory for audio buffer");
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   478
		return (-1);
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   479
	}
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   480
	SDL_MintAudio_audiobuf[1] = SDL_MintAudio_audiobuf[0] + spec->size ;
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   481
	SDL_MintAudio_numbuf=0;
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1111
diff changeset
   482
	SDL_memset(SDL_MintAudio_audiobuf[0], spec->silence, spec->size *2);
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   483
	SDL_MintAudio_audiosize = spec->size;
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   484
	SDL_MintAudio_mutex = 0;
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   485
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   486
	DEBUG_PRINT((DEBUG_NAME "buffer 0 at 0x%08x\n", SDL_MintAudio_audiobuf[0]));
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   487
	DEBUG_PRINT((DEBUG_NAME "buffer 1 at 0x%08x\n", SDL_MintAudio_audiobuf[1]));
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   488
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   489
	/* Setup audio hardware */
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   490
	Mint_InitAudio(this, spec);
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   491
1111
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
   492
    return(1);	/* We don't use SDL threaded audio */
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents:
diff changeset
   493
}