sdl-ios-xcode: src/audio/nds/SDL

annotate src/audio/nds/SDL_ndsaudio.c @ 4001:6831b8723a85 SDL-1.2

Don't initialize the audio buffer passed to the application's audio callback, since they are expected to entirely fill it with data or silence. For legacy apps that might expect the buffer to already have silence and thus may not fill the buffer in the callback, there's an environment variable to expose the old behaviour. Fixes Bugzilla #416.

author	Ryan C. Gordon <icculus@icculus.org>
date	Thu, 05 Jul 2007 02:24:36 +0000
parents	8582c6a5ca16
children	a1b03ba2fcd0

rev	line source
3976 8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1 /*
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2 SDL - Simple DirectMedia Layer
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3 Copyright (C) 1997-2006 Sam Lantinga
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5 This library is free software; you can redistribute it and/or
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	6 modify it under the terms of the GNU Lesser General Public
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	7 License as published by the Free Software Foundation; either
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	8 version 2.1 of the License, or (at your option) any later version.
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	9
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	10 This library is distributed in the hope that it will be useful,
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	11 but WITHOUT ANY WARRANTY; without even the implied warranty of
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	13 Lesser General Public License for more details.
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	14
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	15 You should have received a copy of the GNU Lesser General Public
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	16 License along with this library; if not, write to the Free Software
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	18
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	19 Sam Lantinga
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	20 slouken@libsdl.org
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	21 */
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	22 #include "SDL_config.h"
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	23
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	24 /* Allow access to a raw mixing buffer */
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	25 #include <nds.h>
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	26 #include "SDL.h"
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	27 #include "SDL_endian.h"
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	28 #include "SDL_timer.h"
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	29 #include "SDL_audio.h"
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	30 #include "../SDL_audiomem.h"
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	31 #include "../SDL_audio_c.h"
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	32 #include "SDL_ndsaudio.h"
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	33 #include "soundcommon.h"
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	34
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	35
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	36 /* Audio driver functions */
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	37 static int NDS_OpenAudio(_THIS, SDL_AudioSpec *spec);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	38 static void NDS_WaitAudio(_THIS);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	39 static void NDS_PlayAudio(_THIS);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	40 static Uint8 *NDS_GetAudioBuf(_THIS);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	41 static void NDS_CloseAudio(_THIS);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	42
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	43 /* Audio driver bootstrap functions */
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	44
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	45 u32 framecounter = 0,soundoffset = 0;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	46 static SDL_AudioDevice *sdl_nds_audiodevice;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	47
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	48 //void SoundMixCallback(void *stream,u32 size)
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	49 //{
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	50 // //printf("SoundMixCallback\n");
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	51 //
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	52 // Uint8 *buffer;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	53 //
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	54 // buffer = sdl_nds_audiodevice->hidden->mixbuf;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	55 // memset(buffer, sdl_nds_audiodevice->spec.silence, size);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	56 //
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	57 // if (!sdl_nds_audiodevice->paused){
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	58 //
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	59 //
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	60 // //if (sdl_nds_audiodevice->convert.needed) {
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	61 // // int silence;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	62 //
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	63 // // if (sdl_nds_audiodevice->convert.src_format == AUDIO_U8 ) {
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	64 // // silence = 0x80;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	65 // // } else {
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	66 // // silence = 0;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	67 // // }
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	68 // // memset(sdl_nds_audiodevice->convert.buf, silence, sdl_nds_audiodevice->convert.len);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	69 // // sdl_nds_audiodevice->spec.callback(sdl_nds_audiodevice->spec.userdata,
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	70 // // (Uint8 *)sdl_nds_audiodevice->convert.buf,sdl_nds_audiodevice->convert.len);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	71 // // SDL_ConvertAudio(&sdl_nds_audiodevice->convert);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	72 // // memcpy(buffer, sdl_nds_audiodevice->convert.buf, sdl_nds_audiodevice->convert.len_cvt);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	73 // //} else
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	74 // {
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	75 // sdl_nds_audiodevice->spec.callback(sdl_nds_audiodevice->spec.userdata, buffer, size);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	76 // //memcpy((Sint16 *)stream,buffer, size);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	77 // }
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	78 //
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	79 // }
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	80 //
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	81 // if(soundsystem->format == 8)
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	82 // {
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	83 // int i;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	84 // s32 buffer32 = (s32 )buffer;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	85 // s32 stream32 = (s32 )stream;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	86 // for(i=0;i<size/4;i++){ *stream32++ = buffer32[i] ^ 0x80808080;}
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	87 // //for(i = 0; i < size; i++)
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	88 // // ((s8*)stream)[i]=(buffer[i]^0x80);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	89 // }
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	90 // else
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	91 // {
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	92 // int i;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	93 // for(i = 0; i < size; i++){
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	94 // //((short*)stream)[i] =(short)buffer[i] << 8; // sound 8bit ---> buffer 16bit
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	95 // //if (buffer[i] &0x80)
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	96 // //((Sint16*)stream)[i] = 0xff00 \| buffer[i];
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	97 // ((Sint16*)stream)[i] = (buffer[i] - 128) << 8;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	98 //
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	99 // //else
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	100 // // ((Sint16*)stream)[i] = buffer[i];
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	101 // }
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	102 // //register signed char *pSrc =buffer;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	103 // //register short *pDest =stream;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	104 // //int x;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	105 // // for (x=size; x>0; x--)
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	106 // // {
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	107 // // register short temp = (((short)*pSrc)-128)<<8;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	108 // // pSrc++;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	109 // // *pDest++ = temp;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	110 // // }
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	111 //
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	112 // //memcpy((Sint16 *)stream,buffer, size);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	113 // }
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	114 //}
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	115
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	116 void SoundMixCallback(void *stream,u32 len)
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	117 {
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	118 SDL_AudioDevice audio = (SDL_AudioDevice )sdl_nds_audiodevice;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	119
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	120 /* Silence the buffer, since it's ours */
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	121 SDL_memset(stream, audio->spec.silence, len);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	122
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	123 /* Only do soemthing if audio is enabled */
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	124 if ( ! audio->enabled )
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	125 return;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	126
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	127 if ( ! audio->paused ) {
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	128 if ( audio->convert.needed ) {
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	129 //fprintf(stderr,"converting audio\n");
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	130 SDL_mutexP(audio->mixer_lock);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	131 (*audio->spec.callback)(audio->spec.userdata,
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	132 (Uint8 *)audio->convert.buf,audio->convert.len);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	133 SDL_mutexV(audio->mixer_lock);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	134 SDL_ConvertAudio(&audio->convert);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	135 SDL_memcpy(stream,audio->convert.buf,audio->convert.len_cvt);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	136 } else {
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	137 SDL_mutexP(audio->mixer_lock);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	138 (*audio->spec.callback)(audio->spec.userdata,
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	139 (Uint8 *)stream, len);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	140 SDL_mutexV(audio->mixer_lock);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	141 }
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	142 }
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	143 return;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	144 }
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	145 void MixSound(void)
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	146 {
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	147 int remain;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	148
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	149 if(soundsystem->format == 8)
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	150 {
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	151 if((soundsystem->soundcursor + soundsystem->numsamples) > soundsystem->buffersize)
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	152 {
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	153 SoundMixCallback(&soundsystem->mixbuffer[soundsystem->soundcursor],soundsystem->buffersize - soundsystem->soundcursor);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	154 remain = soundsystem->numsamples - (soundsystem->buffersize - soundsystem->soundcursor);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	155 SoundMixCallback(soundsystem->mixbuffer,remain);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	156 }
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	157 else
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	158 {
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	159 SoundMixCallback(&soundsystem->mixbuffer[soundsystem->soundcursor],soundsystem->numsamples);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	160 }
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	161 }
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	162 else
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	163 {
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	164 if((soundsystem->soundcursor + soundsystem->numsamples) > (soundsystem->buffersize >> 1))
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	165 {
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	166 SoundMixCallback(&soundsystem->mixbuffer[soundsystem->soundcursor << 1],(soundsystem->buffersize >> 1) - soundsystem->soundcursor);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	167 remain = soundsystem->numsamples - ((soundsystem->buffersize >> 1) - soundsystem->soundcursor);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	168 SoundMixCallback(soundsystem->mixbuffer,remain);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	169 }
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	170 else
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	171 {
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	172 SoundMixCallback(&soundsystem->mixbuffer[soundsystem->soundcursor << 1],soundsystem->numsamples);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	173 }
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	174 }
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	175 }
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	176
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	177 void InterruptHandler(void)
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	178 {
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	179 framecounter++;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	180 }
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	181 void FiFoHandler(void)
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	182 {
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	183 u32 command;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	184 while ( !(REG_IPC_FIFO_CR & (IPC_FIFO_RECV_EMPTY)) )
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	185 {
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	186 command = REG_IPC_FIFO_RX;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	187
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	188 switch(command)
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	189 {
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	190 case FIFO_NONE:
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	191 break;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	192 case UPDATEON_ARM9:
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	193 REG_IME = 0;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	194 MixSound();
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	195 REG_IME = 1;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	196 SendCommandToArm7(MIXCOMPLETE_ONARM9);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	197 break;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	198 }
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	199 }
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	200 }
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	201
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	202
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	203
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	204
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	205
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	206 static int Audio_Available(void)
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	207 {
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	208 return(1);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	209 }
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	210
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	211 static void Audio_DeleteDevice(SDL_AudioDevice *device)
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	212 {
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	213 }
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	214
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	215 static SDL_AudioDevice *Audio_CreateDevice(int devindex)
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	216 {
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	217
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	218 SDL_AudioDevice *this;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	219
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	220 /* Initialize all variables that we clean on shutdown */
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	221 this = (SDL_AudioDevice *)malloc(sizeof(SDL_AudioDevice));
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	222 if ( this ) {
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	223 SDL_memset(this, 0, (sizeof *this));
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	224 this->hidden = (struct SDL_PrivateAudioData *)
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	225 SDL_malloc((sizeof *this->hidden));
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	226 }
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	227 if ( (this == NULL) \|\| (this->hidden == NULL) ) {
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	228 SDL_OutOfMemory();
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	229 if ( this ) {
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	230 SDL_free(this);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	231 }
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	232 return(0);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	233 }
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	234 SDL_memset(this->hidden, 0, (sizeof *this->hidden));
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	235
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	236 /* Set the function pointers */
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	237 this->OpenAudio = NDS_OpenAudio;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	238 this->WaitAudio = NDS_WaitAudio;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	239 this->PlayAudio = NDS_PlayAudio;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	240 this->GetAudioBuf = NDS_GetAudioBuf;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	241 this->CloseAudio = NDS_CloseAudio;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	242
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	243 this->free = Audio_DeleteDevice;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	244 //fprintf(stderr,"Audio_CreateDevice\n");
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	245 return this;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	246 }
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	247
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	248 AudioBootStrap NDSAUD_bootstrap = {
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	249 "nds", "NDS audio",
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	250 Audio_Available, Audio_CreateDevice
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	251 };
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	252
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	253
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	254 void static NDS_WaitAudio(_THIS)
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	255 {
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	256 //printf("NDS_WaitAudio\n");
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	257 }
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	258
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	259 static void NDS_PlayAudio(_THIS)
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	260 {
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	261 //printf("playing audio\n");
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	262 if (this->paused)
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	263 return;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	264
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	265 }
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	266
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	267 static Uint8 *NDS_GetAudioBuf(_THIS)
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	268 {
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	269 return NULL;//(this->hidden->mixbuf);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	270 }
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	271
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	272 static void NDS_CloseAudio(_THIS)
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	273 {
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	274 /* if ( this->hidden->mixbuf != NULL ) {
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	275 SDL_FreeAudioMem(this->hidden->mixbuf);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	276 this->hidden->mixbuf = NULL;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	277 }*/
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	278 }
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	279
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	280 static int NDS_OpenAudio(_THIS, SDL_AudioSpec *spec)
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	281 {
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	282 //printf("NDS_OpenAudio\n");
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	283 int format = 0;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	284 //switch(spec->format&0xff) {
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	285 //case 8: spec->format = AUDIO_S8;format=8; break;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	286 //case 16: spec->format = AUDIO_S16LSB;format=16; break;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	287 //default:
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	288 // SDL_SetError("Unsupported audio format");
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	289 // return(-1);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	290 //}
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	291 switch (spec->format&~0x1000) {
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	292 case AUDIO_S8:
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	293 /* Signed 8-bit audio supported */
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	294 format=8;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	295 break;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	296 case AUDIO_U8:
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	297 spec->format ^= 0x80;format=8;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	298 break;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	299 case AUDIO_U16:
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	300 /* Unsigned 16-bit audio unsupported, convert to S16 */
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	301 spec->format ^=0x8000;format=16;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	302 case AUDIO_S16:
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	303 /* Signed 16-bit audio supported */
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	304 format=16;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	305 break;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	306 }
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	307 /* Update the fragment size as size in bytes */
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	308 SDL_CalculateAudioSpec(spec);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	309
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	310 /* Allocate mixing buffer */
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	311 //this->hidden->mixlen = spec->size;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	312 //this->hidden->mixbuf = (Uint8 *) SDL_AllocAudioMem(this->hidden->mixlen);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	313 //if ( this->hidden->mixbuf == NULL ) {
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	314 // SDL_SetError("Out of Memory");
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	315 // return(-1);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	316 //}
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	317
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	318 SDL_NDSAudio_mutex = 0;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	319 sdl_nds_audiodevice=this;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	320
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	321 irqInit();
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	322 irqSet(IRQ_VBLANK,&InterruptHandler);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	323 irqSet(IRQ_FIFO_NOT_EMPTY,&FiFoHandler);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	324 irqEnable(IRQ_FIFO_NOT_EMPTY);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	325
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	326 REG_IPC_FIFO_CR = IPC_FIFO_ENABLE \| IPC_FIFO_SEND_CLEAR \| IPC_FIFO_RECV_IRQ;
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	327
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	328
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	329
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	330 SoundSystemInit(spec->freq,spec->size,0,format);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	331 SoundStartMixer();
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	332
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	333
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	334 return(1);
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	335 }

Mercurial > sdl-ios-xcode

annotate src/audio/nds/SDL_ndsaudio.c @ 4001:6831b8723a85 SDL-1.2