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

annotate src/audio/mint/SDL_mintaudio_gsxb.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 XBIOS functions (GSXB compatible driver)
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_gsxb.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_gsxb"
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:gsxb: "
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_gsxb;
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 _SND 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__SND, &cookie_snd) == C_NOTFOUND) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	94 cookie_snd = SND_PSG;
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 /* Check if we have 16 bits audio */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	98 if ((cookie_snd & SND_16BIT)==0) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	99 DEBUG_PRINT((DEBUG_NAME "no 16 bits sound\n"));
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	100 return(0);
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
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	103 /* Cookie GSXB present ? */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	104 cookie_gsxb = (Getcookie(C_GSXB, &cookie_gsxb) == C_FOUND);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	105
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	106 /* Is it GSXB ? */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	107 if (((cookie_snd & SND_GSXB)==0) \|\| (cookie_gsxb==0)) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	108 DEBUG_PRINT((DEBUG_NAME "no GSXB audio\n"));
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	109 return(0);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	110 }
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 /* Check if audio is lockable */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	113 if (Locksnd()!=1) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	114 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	115 return(0);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	116 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	117
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	118 Unlocksnd();
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 DEBUG_PRINT((DEBUG_NAME "GSXB audio available!\n"));
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	121 return(1);
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
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	124 static void Audio_DeleteDevice(SDL_AudioDevice *device)
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 free(device->hidden);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	127 free(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
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	130 static SDL_AudioDevice *Audio_CreateDevice(int devindex)
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 SDL_AudioDevice *this;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	133
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	134 /* Initialize all variables that we clean on shutdown */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	135 this = (SDL_AudioDevice *)malloc(sizeof(SDL_AudioDevice));
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	136 if ( this ) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	137 memset(this, 0, (sizeof *this));
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	138 this->hidden = (struct SDL_PrivateAudioData *)
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	139 malloc((sizeof *this->hidden));
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	140 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	141 if ( (this == NULL) \|\| (this->hidden == NULL) ) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	142 SDL_OutOfMemory();
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	143 if ( this ) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	144 free(this);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	145 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	146 return(0);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	147 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	148 memset(this->hidden, 0, (sizeof *this->hidden));
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	149
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	150 /* Set the function pointers */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	151 this->OpenAudio = Mint_OpenAudio;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	152 this->CloseAudio = Mint_CloseAudio;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	153 this->LockAudio = Mint_LockAudio;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	154 this->UnlockAudio = Mint_UnlockAudio;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	155 this->free = Audio_DeleteDevice;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	156
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	157 return this;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	158 }
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 AudioBootStrap MINTAUDIO_GSXB_bootstrap = {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	161 MINT_AUDIO_DRIVER_NAME, "MiNT GSXB audio driver",
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	162 Audio_Available, Audio_CreateDevice
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	163 };
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	164
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	165 static void Mint_LockAudio(_THIS)
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 /* Stop replay */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	168 Buffoper(0);
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
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	171 static void Mint_UnlockAudio(_THIS)
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	172 {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	173 /* Restart replay */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	174 Buffoper(SB_PLA_ENA\|SB_PLA_RPT);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	175 }
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 static void Mint_CloseAudio(_THIS)
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	178 {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	179 /* Stop replay */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	180 Buffoper(0);
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 DEBUG_PRINT((DEBUG_NAME "closeaudio: replay stopped\n"));
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	183
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	184 /* Uninstall interrupt */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	185 if (NSetinterrupt(2, SI_NONE, SDL_MintAudio_EmptyGsxbInterrupt)<0) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	186 DEBUG_PRINT((DEBUG_NAME "NSetinterrupt() failed in close\n"));
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
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	189 DEBUG_PRINT((DEBUG_NAME "closeaudio: interrupt disabled\n"));
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	190
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	191 /* Wait if currently playing sound */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	192 while (SDL_MintAudio_mutex != 0) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	193 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	194
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	195 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	196
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	197 /* Clear buffers */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	198 if (SDL_MintAudio_audiobuf[0]) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	199 Mfree(SDL_MintAudio_audiobuf[0]);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	200 SDL_MintAudio_audiobuf[0] = SDL_MintAudio_audiobuf[1] = NULL;
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
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	203 DEBUG_PRINT((DEBUG_NAME "closeaudio: buffers freed\n"));
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	204
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	205 /* Unlock sound system */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	206 Unlocksnd();
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
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	209 static int Mint_CheckAudio(_THIS, SDL_AudioSpec *spec)
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	210 {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	211 long snd_format;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	212 int i, resolution, format_signed, format_bigendian;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	213
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	214 resolution = spec->format & 0x00ff;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	215 format_signed = ((spec->format & 0x8000)!=0);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	216 format_bigendian = ((spec->format & 0x1000)!=0);
704 c4803992e09c Small bugfixes Patrice Mandin <patmandin@gmail.com> parents: 644 diff changeset	217
c4803992e09c Small bugfixes Patrice Mandin <patmandin@gmail.com> parents: 644 diff changeset	218 DEBUG_PRINT((DEBUG_NAME "asked: %d bits, ",spec->format & 0x00ff));
c4803992e09c Small bugfixes Patrice Mandin <patmandin@gmail.com> parents: 644 diff changeset	219 DEBUG_PRINT(("signed=%d, ", ((spec->format & 0x8000)!=0)));
c4803992e09c Small bugfixes Patrice Mandin <patmandin@gmail.com> parents: 644 diff changeset	220 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	221 DEBUG_PRINT(("channels=%d, ", spec->channels));
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	222 DEBUG_PRINT(("freq=%d\n", spec->freq));
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 /* Check formats available */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	225 snd_format = Sndstatus(SND_QUERYFORMATS);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	226 switch (resolution) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	227 case 8:
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	228 if ((snd_format & SND_FORMAT8)==0) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	229 SDL_SetError("Mint_CheckAudio: 8 bits samples not supported");
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	230 return -1;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	231 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	232 snd_format = Sndstatus(SND_QUERY8BIT);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	233 break;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	234 case 16:
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	235 if ((snd_format & SND_FORMAT16)==0) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	236 SDL_SetError("Mint_CheckAudio: 16 bits samples not supported");
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	237 return -1;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	238 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	239 snd_format = Sndstatus(SND_QUERY16BIT);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	240 break;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	241 default:
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	242 SDL_SetError("Mint_CheckAudio: Unsupported sample resolution");
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	243 return -1;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	244 break;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	245 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	246
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	247 /* Check signed/unsigned format */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	248 if (format_signed) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	249 if (snd_format & SND_FORMATSIGNED) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	250 /* Ok */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	251 } else if (snd_format & SND_FORMATUNSIGNED) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	252 /* Give unsigned format */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	253 spec->format = spec->format & (~0x8000);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	254 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	255 } else {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	256 if (snd_format & SND_FORMATUNSIGNED) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	257 /* Ok */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	258 } else if (snd_format & SND_FORMATSIGNED) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	259 /* Give signed format */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	260 spec->format \|= 0x8000;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	261 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	262 }
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 if (format_bigendian) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	265 if (snd_format & SND_FORMATBIGENDIAN) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	266 /* Ok */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	267 } else if (snd_format & SND_FORMATLITTLEENDIAN) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	268 /* Give little endian format */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	269 spec->format = spec->format & (~0x1000);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	270 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	271 } else {
704 c4803992e09c Small bugfixes Patrice Mandin <patmandin@gmail.com> parents: 644 diff changeset	272 if (snd_format & SND_FORMATLITTLEENDIAN) {
644 594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	273 /* Ok */
704 c4803992e09c Small bugfixes Patrice Mandin <patmandin@gmail.com> parents: 644 diff changeset	274 } else if (snd_format & SND_FORMATBIGENDIAN) {
644 594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	275 /* Give big endian format */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	276 spec->format \|= 0x1000;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	277 }
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
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	280 /* Calculate and select the closest frequency */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	281 MINTAUDIO_sfreq=1;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	282 MINTAUDIO_nfreq=12;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	283 for (i=MINTAUDIO_sfreq;i<MINTAUDIO_nfreq;i++) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	284 MINTAUDIO_hardfreq[i]=MASTERCLOCK_44K/(MASTERPREDIV_MILAN*(i+1));
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	285 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	286 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	287
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	288 MINTAUDIO_numfreq=SDL_MintAudio_SearchFrequency(this, 1, spec->freq);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	289 spec->freq=MINTAUDIO_hardfreq[MINTAUDIO_numfreq];
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	290
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	291 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	292 DEBUG_PRINT(("signed=%d, ", ((spec->format & 0x8000)!=0)));
704 c4803992e09c Small bugfixes Patrice Mandin <patmandin@gmail.com> parents: 644 diff changeset	293 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	294 DEBUG_PRINT(("channels=%d, ", spec->channels));
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	295 DEBUG_PRINT(("freq=%d\n", spec->freq));
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	296
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	297 return 0;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	298 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	299
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	300 static void Mint_InitAudio(_THIS, SDL_AudioSpec *spec)
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	301 {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	302 int channels_mode;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	303 void *buffer;
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 /* Stop currently playing sound */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	306 Buffoper(0);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	307
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	308 /* Set replay tracks */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	309 Settracks(0,0);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	310 Setmontracks(0);
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 /* Select replay format */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	313 switch (spec->format & 0xff) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	314 case 8:
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	315 if (spec->channels==2) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	316 channels_mode=STEREO8;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	317 } else {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	318 channels_mode=MONO8;
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 break;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	321 case 16:
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	322 if (spec->channels==2) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	323 channels_mode=STEREO16;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	324 } else {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	325 channels_mode=MONO16;
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 break;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	328 default:
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	329 channels_mode=STEREO16;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	330 break;
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 if (Setmode(channels_mode)<0) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	333 DEBUG_PRINT((DEBUG_NAME "Setmode() failed\n"));
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	334 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	335
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	336 Devconnect(DMAPLAY, DAC, CLKEXT, MINTAUDIO_numfreq, 1);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	337
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	338 /* Set buffer */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	339 buffer = SDL_MintAudio_audiobuf[SDL_MintAudio_numbuf];
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	340 if (Setbuffer(0, buffer, buffer + spec->size)<0) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	341 DEBUG_PRINT((DEBUG_NAME "Setbuffer() failed\n"));
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
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	344 /* Install interrupt */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	345 if (NSetinterrupt(2, SI_PLAY, SDL_MintAudio_GsxbInterrupt)<0) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	346 DEBUG_PRINT((DEBUG_NAME "NSetinterrupt() failed\n"));
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	347 }
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 /* Go */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	350 Buffoper(SB_PLA_ENA\|SB_PLA_RPT);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	351 DEBUG_PRINT((DEBUG_NAME "hardware initialized\n"));
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	352 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	353
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	354 static int Mint_OpenAudio(_THIS, SDL_AudioSpec *spec)
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	355 {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	356 /* Lock sound system */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	357 if (Locksnd()!=1) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	358 SDL_SetError("Mint_OpenAudio: Audio system already in use");
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	359 return(-1);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	360 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	361
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	362 SDL_MintAudio_device = this;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	363
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	364 /* Check audio capabilities */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	365 if (Mint_CheckAudio(this, spec)==-1) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	366 return -1;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	367 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	368
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	369 SDL_CalculateAudioSpec(spec);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	370
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	371 /* Allocate memory for audio buffers in DMA-able RAM */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	372 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	373
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	374 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	375 if (SDL_MintAudio_audiobuf[0]==NULL) {
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	376 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	377 return (-1);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	378 }
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	379 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	380 SDL_MintAudio_numbuf=0;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	381 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	382 SDL_MintAudio_audiosize = spec->size;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	383 SDL_MintAudio_mutex = 0;
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	384
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	385 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	386 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	387
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	388 /* Setup audio hardware */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	389 Mint_InitAudio(this, spec);
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	390
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	391 return(1); /* We don't use threaded audio */
594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: diff changeset	392 }

Mercurial > sdl-ios-xcode

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