sdl-ios-xcode: src/audio/mint/SDL_mintaudio

annotate src/audio/mint/SDL_mintaudio_dma8.c @ 956:4263beff9e38

Date: Mon, 30 Aug 2004 18:20:25 +0200 From: Joost Baas Subject: why call arts artsc? I, and a few other people at the mplayer-docs-mailinglist were wondering why you decided to call arts artsc. I understand usually users have nothing to do with libsdl, just developers, but because you can choose the audio-driver being used by mplayer, one of which is sdl, and you can also choose the sdl subdriver, it is necessary to have a well-known or logical name. artsc is not the logical choice, and it's very hard to look up the right name if you don't know what you're looking for.

author	Sam Lantinga <slouken@libsdl.org>
date	Fri, 17 Sep 2004 13:25:06 +0000
parents	b8d311d90021
children	185acc07127a

rev	line source
644 594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	1 /*
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	2 SDL - Simple DirectMedia Layer
769 b8d311d90021 Updated copyright information for 2004 (Happy New Year!) Sam Lantinga <slouken@libsdl.org> parents: 704 diff changeset	3 Copyright (C) 1997-2004 Sam Lantinga
644 594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	4
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	5 This library is free software; you can redistribute it and/or
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	6 modify it under the terms of the GNU Library General Public
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	7 License as published by the Free Software Foundation; either
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	8 version 2 of the License, or (at your option) any later version.
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	9
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	10 This library is distributed in the hope that it will be useful,
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	11 but WITHOUT ANY WARRANTY; without even the implied warranty of
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	13 Library General Public License for more details.
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	14
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	15 You should have received a copy of the GNU Library General Public
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	16 License along with this library; if not, write to the Free
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	18
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	19 Sam Lantinga
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	20 slouken@libsdl.org
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	21 */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	22
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	23 /*
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	24 MiNT audio driver
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	25 using DMA 8bits (hardware access)
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	26
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	27 Patrice Mandin
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	28 */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	29
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	30 #include <stdlib.h>
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	31 #include <stdio.h>
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	32 #include <string.h>
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	33
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	34 /* Mint includes */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	35 #include <mint/osbind.h>
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	36 #include <mint/falcon.h>
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	37 #include <mint/cookie.h>
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	38
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	39 #include "SDL_endian.h"
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	40 #include "SDL_audio.h"
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	41 #include "SDL_audio_c.h"
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	42 #include "SDL_audiomem.h"
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	43 #include "SDL_sysaudio.h"
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	44
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	45 #include "SDL_atarimxalloc_c.h"
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	46
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	47 #include "SDL_mintaudio.h"
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	48 #include "SDL_mintaudio_dma8.h"
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	49
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	50 /--- Defines ---/
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	51
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	52 #define MINT_AUDIO_DRIVER_NAME "mint_dma8"
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	53
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	54 /* Debug print info */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	55 #define DEBUG_NAME "audio:dma8: "
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	56 #if 0
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	57 #define DEBUG_PRINT(what) \
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	58 { \
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	59 printf what; \
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	60 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	61 #else
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	62 #define DEBUG_PRINT(what)
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	63 #endif
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	64
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	65 /--- Static variables ---/
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	66
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	67 static unsigned long cookie_snd, cookie_mch;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	68
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	69 /--- Audio driver functions ---/
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	70
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	71 static void Mint_CloseAudio(_THIS);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	72 static int Mint_OpenAudio(_THIS, SDL_AudioSpec *spec);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	73 static void Mint_LockAudio(_THIS);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	74 static void Mint_UnlockAudio(_THIS);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	75
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	76 /* To check/init hardware audio */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	77 static int Mint_CheckAudio(_THIS, SDL_AudioSpec *spec);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	78 static void Mint_InitAudio(_THIS, SDL_AudioSpec *spec);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	79
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	80 /--- Audio driver bootstrap functions ---/
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	81
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	82 static int Audio_Available(void)
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	83 {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	84 const char *envr = getenv("SDL_AUDIODRIVER");
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	85
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	86 /* Check if user asked a different audio driver */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	87 if ((envr) && (strcmp(envr, MINT_AUDIO_DRIVER_NAME)!=0)) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	88 DEBUG_PRINT((DEBUG_NAME "user asked a different audio driver\n"));
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	89 return 0;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	90 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	91
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	92 /* Cookie _MCH present ? if not, assume ST machine */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	93 if (Getcookie(C__MCH, &cookie_mch) == C_NOTFOUND) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	94 cookie_mch = MCH_ST;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	95 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	96
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	97 /* Cookie _SND present ? if not, assume ST machine */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	98 if (Getcookie(C__SND, &cookie_snd) == C_NOTFOUND) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	99 cookie_snd = SND_PSG;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	100 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	101
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	102 /* Check if we have 8 bits audio */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	103 if ((cookie_snd & SND_8BIT)==0) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	104 DEBUG_PRINT((DEBUG_NAME "no 8 bits sound\n"));
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	105 return(0);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	106 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	107
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	108 if ((cookie_mch>>16)>MCH_F30) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	109 DEBUG_PRINT((DEBUG_NAME "unknown 8 bits audio chip\n"));
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	110 return 0;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	111 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	112
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	113 /* Check if audio is lockable */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	114 if ((cookie_mch>>16) == MCH_F30) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	115 if (Locksnd()!=1) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	116 DEBUG_PRINT((DEBUG_NAME "audio locked by other application\n"));
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	117 return(0);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	118 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	119
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	120 Unlocksnd();
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	121 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	122
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	123 DEBUG_PRINT((DEBUG_NAME "8 bits audio available!\n"));
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	124 return(1);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	125 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	126
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	127 static void Audio_DeleteDevice(SDL_AudioDevice *device)
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	128 {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	129 free(device->hidden);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	130 free(device);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	131 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	132
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	133 static SDL_AudioDevice *Audio_CreateDevice(int devindex)
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	134 {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	135 SDL_AudioDevice *this;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	136
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	137 /* Initialize all variables that we clean on shutdown */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	138 this = (SDL_AudioDevice *)malloc(sizeof(SDL_AudioDevice));
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	139 if ( this ) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	140 memset(this, 0, (sizeof *this));
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	141 this->hidden = (struct SDL_PrivateAudioData *)
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	142 malloc((sizeof *this->hidden));
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	143 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	144 if ( (this == NULL) \|\| (this->hidden == NULL) ) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	145 SDL_OutOfMemory();
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	146 if ( this ) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	147 free(this);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	148 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	149 return(0);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	150 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	151 memset(this->hidden, 0, (sizeof *this->hidden));
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	152
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	153 /* Set the function pointers */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	154 this->OpenAudio = Mint_OpenAudio;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	155 this->CloseAudio = Mint_CloseAudio;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	156 this->LockAudio = Mint_LockAudio;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	157 this->UnlockAudio = Mint_UnlockAudio;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	158 this->free = Audio_DeleteDevice;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	159
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	160 return this;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	161 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	162
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	163 AudioBootStrap MINTAUDIO_DMA8_bootstrap = {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	164 MINT_AUDIO_DRIVER_NAME, "MiNT DMA 8 bits audio driver",
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	165 Audio_Available, Audio_CreateDevice
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	166 };
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	167
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	168 static void Mint_LockAudio(_THIS)
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	169 {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	170 void *oldpile;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	171
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	172 /* Stop replay */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	173 oldpile=(void *)Super(0);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	174 DMAAUDIO_IO.control=0;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	175 Super(oldpile);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	176 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	177
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	178 static void Mint_UnlockAudio(_THIS)
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	179 {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	180 void *oldpile;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	181
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	182 /* Restart replay */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	183 oldpile=(void *)Super(0);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	184 DMAAUDIO_IO.control=3;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	185 Super(oldpile);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	186 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	187
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	188 static void Mint_CloseAudio(_THIS)
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	189 {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	190 void *oldpile;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	191
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	192 /* Stop replay */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	193 oldpile=(void *)Super(0);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	194 DMAAUDIO_IO.control=0;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	195 Super(oldpile);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	196
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	197 DEBUG_PRINT((DEBUG_NAME "closeaudio: replay stopped\n"));
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	198
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	199 /* Disable interrupt */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	200 Jdisint(MFP_DMASOUND);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	201
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	202 DEBUG_PRINT((DEBUG_NAME "closeaudio: interrupt disabled\n"));
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	203
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	204 /* Wait if currently playing sound */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	205 while (SDL_MintAudio_mutex != 0) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	206 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	207
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	208 DEBUG_PRINT((DEBUG_NAME "closeaudio: no more interrupt running\n"));
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	209
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	210 /* Clear buffers */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	211 if (SDL_MintAudio_audiobuf[0]) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	212 Mfree(SDL_MintAudio_audiobuf[0]);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	213 SDL_MintAudio_audiobuf[0] = SDL_MintAudio_audiobuf[1] = NULL;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	214 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	215
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	216 DEBUG_PRINT((DEBUG_NAME "closeaudio: buffers freed\n"));
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	217 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	218
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	219 static int Mint_CheckAudio(_THIS, SDL_AudioSpec *spec)
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	220 {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	221 int i, masterprediv;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	222 unsigned long masterclock;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	223
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	224 DEBUG_PRINT((DEBUG_NAME "asked: %d bits, ",spec->format & 0x00ff));
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	225 DEBUG_PRINT(("signed=%d, ", ((spec->format & 0x8000)!=0)));
704 c4803992e09c Small bugfixes Patrice Mandin <patmandin@gmail.com> parents: 644 diff changeset	226 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	227 DEBUG_PRINT(("channels=%d, ", spec->channels));
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	228 DEBUG_PRINT(("freq=%d\n", spec->freq));
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	229
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	230 /* Check formats available */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	231 spec->format = AUDIO_S8;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	232
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	233 /* Calculate and select the closest frequency */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	234 MINTAUDIO_nfreq=4;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	235 MINTAUDIO_sfreq=0;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	236 masterclock=MASTERCLOCK_STE;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	237 masterprediv=MASTERPREDIV_STE;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	238 switch(cookie_mch>>16) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	239 /*
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	240 case MCH_STE:
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	241 masterclock=MASTERCLOCK_STE;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	242 masterprediv=MASTERPREDIV_STE;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	243 break;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	244 */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	245 case MCH_TT:
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	246 masterclock=MASTERCLOCK_TT;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	247 masterprediv=MASTERPREDIV_TT;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	248 break;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	249 case MCH_F30:
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	250 masterclock=MASTERCLOCK_FALCON1;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	251 masterprediv=MASTERPREDIV_FALCON<<1;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	252 MINTAUDIO_nfreq=3;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	253 MINTAUDIO_sfreq=1;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	254 break;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	255 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	256 for (i=MINTAUDIO_sfreq;i<MINTAUDIO_nfreq;i++) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	257 MINTAUDIO_hardfreq[i]=masterclock/(masterprediv*(1<<i));
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	258 DEBUG_PRINT((DEBUG_NAME "calc:freq(%d)=%lu\n", i, MINTAUDIO_hardfreq[i]));
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	259 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	260
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	261 MINTAUDIO_numfreq=SDL_MintAudio_SearchFrequency(this, 0, spec->freq);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	262 spec->freq=MINTAUDIO_hardfreq[MINTAUDIO_numfreq];
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	263
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	264 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	265 DEBUG_PRINT(("signed=%d, ", ((spec->format & 0x8000)!=0)));
704 c4803992e09c Small bugfixes Patrice Mandin <patmandin@gmail.com> parents: 644 diff changeset	266 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	267 DEBUG_PRINT(("channels=%d, ", spec->channels));
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	268 DEBUG_PRINT(("freq=%d\n", spec->freq));
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	269
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	270 return 0;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	271 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	272
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	273 static void Mint_InitAudio(_THIS, SDL_AudioSpec *spec)
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	274 {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	275 void *oldpile;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	276 unsigned long buffer;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	277 unsigned char mode;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	278
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	279 /* Set replay tracks */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	280 if (cookie_snd & SND_16BIT) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	281 Settracks(0,0);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	282 Setmontracks(0);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	283 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	284
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	285 oldpile=(void *)Super(0);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	286
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	287 /* Stop currently playing sound */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	288 DMAAUDIO_IO.control=0;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	289
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	290 /* Set buffer */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	291 buffer = (unsigned long) SDL_MintAudio_audiobuf[SDL_MintAudio_numbuf];
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	292 DMAAUDIO_IO.start_high = (buffer>>16) & 255;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	293 DMAAUDIO_IO.start_mid = (buffer>>8) & 255;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	294 DMAAUDIO_IO.start_low = buffer & 255;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	295
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	296 buffer += SDL_MintAudio_audiosize;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	297 DMAAUDIO_IO.end_high = (buffer>>16) & 255;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	298 DMAAUDIO_IO.end_mid = (buffer>>8) & 255;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	299 DMAAUDIO_IO.end_low = buffer & 255;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	300
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	301 mode = 3-MINTAUDIO_numfreq;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	302 if (spec->channels==1) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	303 mode \|= 1<<7;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	304 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	305 DMAAUDIO_IO.mode = mode;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	306
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	307 /* Set interrupt */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	308 Jdisint(MFP_DMASOUND);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	309 Xbtimer(XB_TIMERA, 8, 1, SDL_MintAudio_Dma8Interrupt);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	310 Jenabint(MFP_DMASOUND);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	311
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	312 /* Go */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	313 DMAAUDIO_IO.control = 3; /* playback + repeat */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	314
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	315 Super(oldpile);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	316 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	317
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	318 static int Mint_OpenAudio(_THIS, SDL_AudioSpec *spec)
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	319 {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	320 SDL_MintAudio_device = this;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	321
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	322 /* Check audio capabilities */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	323 if (Mint_CheckAudio(this, spec)==-1) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	324 return -1;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	325 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	326
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	327 SDL_CalculateAudioSpec(spec);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	328
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	329 /* Allocate memory for audio buffers in DMA-able RAM */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	330 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	331
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	332 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	333 if (SDL_MintAudio_audiobuf[0]==NULL) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	334 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	335 return (-1);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	336 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	337 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	338 SDL_MintAudio_numbuf=0;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	339 memset(SDL_MintAudio_audiobuf[0], spec->silence, spec->size *2);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	340 SDL_MintAudio_audiosize = spec->size;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	341 SDL_MintAudio_mutex = 0;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	342
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	343 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	344 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	345
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	346 /* Setup audio hardware */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	347 Mint_InitAudio(this, spec);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	348
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	349 return(1); /* We don't use threaded audio */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	350 }

Mercurial > sdl-ios-xcode

annotate src/audio/mint/SDL_mintaudio_dma8.c @ 956:4263beff9e38