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annotate src/audio/nds/SDL_ndsaudio.c @ 4135:cd98d1dc385c SDL-1.2

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Damien Carbery fixed bug #542 In SDL 1.2.13 sdl.m4 the AM_PATH_SDL function looks for sdl-config. It sets the PATH: PATH="$prefix/bin:$prefix/usr/bin:$PATH" but does not save the current PATH or restore the current PATH at the end. This breaks the build on Solaris because we have GNU tools in another dir (listed at the top of PATH) but non-GNU tools with the same names in $prefix/bin. Later configure tests finds the non-GNU tools and quits in error
author Sam Lantinga <slouken@libsdl.org>
date Thu, 24 Jan 2008 15:50:20 +0000
parents 8582c6a5ca16
children a1b03ba2fcd0
rev   line source
3976
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 /* Allow access to a raw mixing buffer */
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25 #include <nds.h>
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26 #include "SDL.h"
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27 #include "SDL_endian.h"
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28 #include "SDL_timer.h"
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29 #include "SDL_audio.h"
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30 #include "../SDL_audiomem.h"
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31 #include "../SDL_audio_c.h"
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32 #include "SDL_ndsaudio.h"
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33 #include "soundcommon.h"
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34
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35
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36 /* Audio driver functions */
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37 static int NDS_OpenAudio(_THIS, SDL_AudioSpec *spec);
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38 static void NDS_WaitAudio(_THIS);
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39 static void NDS_PlayAudio(_THIS);
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40 static Uint8 *NDS_GetAudioBuf(_THIS);
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41 static void NDS_CloseAudio(_THIS);
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42
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43 /* Audio driver bootstrap functions */
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44
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45 u32 framecounter = 0,soundoffset = 0;
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46 static SDL_AudioDevice *sdl_nds_audiodevice;
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47
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48 //void SoundMixCallback(void *stream,u32 size)
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49 //{
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50 // //printf("SoundMixCallback\n");
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51 //
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52 // Uint8 *buffer;
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53 //
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54 // buffer = sdl_nds_audiodevice->hidden->mixbuf;
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55 // memset(buffer, sdl_nds_audiodevice->spec.silence, size);
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56 //
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57 // if (!sdl_nds_audiodevice->paused){
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58 //
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59 //
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60 // //if (sdl_nds_audiodevice->convert.needed) {
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61 // // int silence;
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62 //
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63 // // if (sdl_nds_audiodevice->convert.src_format == AUDIO_U8 ) {
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64 // // silence = 0x80;
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65 // // } else {
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66 // // silence = 0;
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67 // // }
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68 // // memset(sdl_nds_audiodevice->convert.buf, silence, sdl_nds_audiodevice->convert.len);
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69 // // sdl_nds_audiodevice->spec.callback(sdl_nds_audiodevice->spec.userdata,
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70 // // (Uint8 *)sdl_nds_audiodevice->convert.buf,sdl_nds_audiodevice->convert.len);
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71 // // SDL_ConvertAudio(&sdl_nds_audiodevice->convert);
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72 // // memcpy(buffer, sdl_nds_audiodevice->convert.buf, sdl_nds_audiodevice->convert.len_cvt);
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73 // //} else
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74 // {
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75 // sdl_nds_audiodevice->spec.callback(sdl_nds_audiodevice->spec.userdata, buffer, size);
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76 // //memcpy((Sint16 *)stream,buffer, size);
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77 // }
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78 //
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79 // }
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80 //
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81 // if(soundsystem->format == 8)
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82 // {
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83 // int i;
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84 // s32 *buffer32 = (s32 *)buffer;
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85 // s32 *stream32 = (s32 *)stream;
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86 // for(i=0;i<size/4;i++){ *stream32++ = buffer32[i] ^ 0x80808080;}
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87 // //for(i = 0; i < size; i++)
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88 // // ((s8*)stream)[i]=(buffer[i]^0x80);
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89 // }
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90 // else
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91 // {
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92 // int i;
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93 // for(i = 0; i < size; i++){
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94 // //((short*)stream)[i] =(short)buffer[i] << 8; // sound 8bit ---> buffer 16bit
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95 // //if (buffer[i] &0x80)
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96 // //((Sint16*)stream)[i] = 0xff00 | buffer[i];
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97 // ((Sint16*)stream)[i] = (buffer[i] - 128) << 8;
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98 //
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99 // //else
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100 // // ((Sint16*)stream)[i] = buffer[i];
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101 // }
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102 // //register signed char *pSrc =buffer;
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103 // //register short *pDest =stream;
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104 // //int x;
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105 // // for (x=size; x>0; x--)
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106 // // {
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107 // // register short temp = (((short)*pSrc)-128)<<8;
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108 // // pSrc++;
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109 // // *pDest++ = temp;
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110 // // }
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111 //
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112 // //memcpy((Sint16 *)stream,buffer, size);
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113 // }
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114 //}
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115
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116 void SoundMixCallback(void *stream,u32 len)
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117 {
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118 SDL_AudioDevice *audio = (SDL_AudioDevice *)sdl_nds_audiodevice;
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119
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120 /* Silence the buffer, since it's ours */
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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:
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251 };
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252
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253
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254 void static NDS_WaitAudio(_THIS)
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255 {
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256 //printf("NDS_WaitAudio\n");
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257 }
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258
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259 static void NDS_PlayAudio(_THIS)
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260 {
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261 //printf("playing audio\n");
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262 if (this->paused)
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263 return;
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264
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265 }
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266
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267 static Uint8 *NDS_GetAudioBuf(_THIS)
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268 {
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269 return NULL;//(this->hidden->mixbuf);
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270 }
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271
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272 static void NDS_CloseAudio(_THIS)
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273 {
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274 /* if ( this->hidden->mixbuf != NULL ) {
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275 SDL_FreeAudioMem(this->hidden->mixbuf);
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276 this->hidden->mixbuf = NULL;
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277 }*/
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278 }
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279
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280 static int NDS_OpenAudio(_THIS, SDL_AudioSpec *spec)
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281 {
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282 //printf("NDS_OpenAudio\n");
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283 int format = 0;
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284 //switch(spec->format&0xff) {
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285 //case 8: spec->format = AUDIO_S8;format=8; break;
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286 //case 16: spec->format = AUDIO_S16LSB;format=16; break;
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287 //default:
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288 // SDL_SetError("Unsupported audio format");
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289 // return(-1);
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290 //}
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291 switch (spec->format&~0x1000) {
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292 case AUDIO_S8:
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293 /* Signed 8-bit audio supported */
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294 format=8;
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295 break;
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296 case AUDIO_U8:
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297 spec->format ^= 0x80;format=8;
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298 break;
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299 case AUDIO_U16:
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300 /* Unsigned 16-bit audio unsupported, convert to S16 */
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301 spec->format ^=0x8000;format=16;
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302 case AUDIO_S16:
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303 /* Signed 16-bit audio supported */
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304 format=16;
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305 break;
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306 }
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307 /* Update the fragment size as size in bytes */
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308 SDL_CalculateAudioSpec(spec);
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309
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310 /* Allocate mixing buffer */
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311 //this->hidden->mixlen = spec->size;
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312 //this->hidden->mixbuf = (Uint8 *) SDL_AllocAudioMem(this->hidden->mixlen);
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313 //if ( this->hidden->mixbuf == NULL ) {
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314 // SDL_SetError("Out of Memory");
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315 // return(-1);
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316 //}
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317
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318 SDL_NDSAudio_mutex = 0;
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319 sdl_nds_audiodevice=this;
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320
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321 irqInit();
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322 irqSet(IRQ_VBLANK,&InterruptHandler);
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323 irqSet(IRQ_FIFO_NOT_EMPTY,&FiFoHandler);
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324 irqEnable(IRQ_FIFO_NOT_EMPTY);
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325
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326 REG_IPC_FIFO_CR = IPC_FIFO_ENABLE | IPC_FIFO_SEND_CLEAR | IPC_FIFO_RECV_IRQ;
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327
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328
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diff changeset
329
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330 SoundSystemInit(spec->freq,spec->size,0,format);
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331 SoundStartMixer();
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332
8582c6a5ca16 Added initial support for Nintendo DS, based on the work by Troy Davis (GPF)
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parents:
diff changeset
333
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334 return(1);
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335 }