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comparison src/audio/nds/SDL_ndsaudio.c @ 2735:204be4fc2726

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Final merge of Google Summer of Code 2008 work... Port SDL 1.3 to the Nintendo DS by Darren Alton, mentored by Sam Lantinga
author Sam Lantinga <slouken@libsdl.org>
date Wed, 27 Aug 2008 15:10:03 +0000
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children 99210400e8b9
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2734:dd25eabe441c 2735:204be4fc2726
1 /*
2 SDL - Simple DirectMedia Layer
3 Copyright (C) 1997-2006 Sam Lantinga
4
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 This library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with this library; if not, write to the Free Software
17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18
19 Sam Lantinga
20 slouken@libsdl.org
21
22 This file written by Ryan C. Gordon (icculus@icculus.org)
23 */
24 #include "SDL_config.h"
25
26 /* Output audio to NDS */
27
28 #include <nds.h>
29
30 #include "SDL_audio.h"
31 #include "../SDL_audio_c.h"
32 #include "SDL_ndsaudio.h"
33
34 static int
35 NDSAUD_OpenDevice(_THIS, const char *devname, int iscapture)
36 {
37 SDL_AudioFormat test_format = SDL_FirstAudioFormat(this->spec.format);
38 int valid_datatype = 0;
39
40 this->hidden = SDL_malloc(sizeof(*(this->hidden)));
41 if (!this->hidden) {
42 SDL_OutOfMemory();
43 return 0;
44 }
45 SDL_memset(this->hidden, 0, (sizeof *this->hidden));
46
47 while ((!valid_datatype) && (test_format)) {
48 this->spec.format = test_format;
49 switch (test_format) {
50 case AUDIO_S8:
51 /*case AUDIO_S16LSB: */
52 valid_datatype = 1;
53 break;
54 default:
55 test_format = SDL_NextAudioFormat();
56 break;
57 }
58 }
59
60 /* set the generic sound parameters */
61 setGenericSound(22050, /* sample rate */
62 127, /* volume */
63 64, /* panning/balance */
64 0); /* sound format */
65
66 return 1;
67 }
68
69 static void
70 NDSAUD_PlayDevice(_THIS)
71 {
72 TransferSoundData *sound = SDL_malloc(sizeof(TransferSoundData));
73 if (!sound) {
74 SDL_OutOfMemory();
75 }
76
77 playGenericSound(this->hidden->mixbuf, this->hidden->mixlen);
78 #if 0
79 // sound->data = this->hidden->mixbuf;/* pointer to raw audio data */
80 // sound->len = this->hidden->mixlen; /* size of raw data pointed to above */
81 // sound->rate = 22050; /* sample rate = 22050Hz */
82 // sound->vol = 127; /* volume [0..127] for [min..max] */
83 // sound->pan = 64; /* balance [0..127] for [left..right] */
84 // sound->format = 0; /* 0 for 16-bit, 1 for 8-bit */
85 // playSound(sound);
86 #endif
87 }
88
89
90 static Uint8 *
91 NDSAUD_GetDeviceBuf(_THIS)
92 {
93 return this->hidden->mixbuf; /* is this right? */
94 }
95
96 static void
97 NDSAUD_WaitDevice(_THIS)
98 {
99 /* stub */
100 }
101
102 static void
103 NDSAUD_CloseDevice(_THIS)
104 {
105 /* stub */
106 }
107
108 static int
109 NDSAUD_Init(SDL_AudioDriverImpl * impl)
110 {
111 /* Set the function pointers */
112 impl->OpenDevice = NDSAUD_OpenDevice;
113 impl->PlayDevice = NDSAUD_PlayDevice;
114 impl->WaitDevice = NDSAUD_WaitDevice;
115 impl->GetDeviceBuf = NDSAUD_GetDeviceBuf;
116 impl->CloseDevice = NDSAUD_CloseDevice;
117
118 /* and the capabilities */
119 impl->HasCaptureSupport = 1;
120 impl->OnlyHasDefaultOutputDevice = 1;
121 impl->OnlyHasDefaultInputDevice = 1;
122
123 return 1;
124 }
125
126 AudioBootStrap NDSAUD_bootstrap = {
127 "nds", "SDL NDS audio driver", NDSAUD_Init, 0 /*1? */
128 };
129
130 /* vi: set ts=4 sw=4 expandtab: */