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SDL_ndsaudio.c
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/*
SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2011 Sam Lantinga
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This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Sam Lantinga
slouken@libsdl.org
This file written by Ryan C. Gordon (icculus@icculus.org)
*/
#include "SDL_config.h"
/* Output audio to NDS */
#include <nds.h>
#include "SDL_audio.h"
#include "../SDL_audio_c.h"
#include "SDL_ndsaudio.h"
static int
NDSAUD_OpenDevice(_THIS, const char *devname, int iscapture)
{
SDL_AudioFormat test_format = SDL_FirstAudioFormat(this->spec.format);
int valid_datatype = 0;
this->hidden = SDL_malloc(sizeof(*(this->hidden)));
if (!this->hidden) {
SDL_OutOfMemory();
return 0;
}
SDL_memset(this->hidden, 0, (sizeof *this->hidden));
while ((!valid_datatype) && (test_format)) {
this->spec.format = test_format;
switch (test_format) {
case AUDIO_S8:
/*case AUDIO_S16LSB: */
valid_datatype = 1;
break;
default:
test_format = SDL_NextAudioFormat();
break;
}
}
/* set the generic sound parameters */
setGenericSound(22050, /* sample rate */
127, /* volume */
64, /* panning/balance */
0); /* sound format */
return 1;
}
static void
NDSAUD_PlayDevice(_THIS)
{
TransferSoundData *sound = SDL_malloc(sizeof(TransferSoundData));
if (!sound) {
SDL_OutOfMemory();
}
playGenericSound(this->hidden->mixbuf, this->hidden->mixlen);
#if 0
// sound->data = this->hidden->mixbuf;/* pointer to raw audio data */
// sound->len = this->hidden->mixlen; /* size of raw data pointed to above */
// sound->rate = 22050; /* sample rate = 22050Hz */
// sound->vol = 127; /* volume [0..127] for [min..max] */
// sound->pan = 64; /* balance [0..127] for [left..right] */
// sound->format = 0; /* 0 for 16-bit, 1 for 8-bit */
// playSound(sound);
#endif
}
static Uint8 *
NDSAUD_GetDeviceBuf(_THIS)
{
return this->hidden->mixbuf; /* is this right? */
}
static void
NDSAUD_WaitDevice(_THIS)
{
/* stub */
}
static void
NDSAUD_CloseDevice(_THIS)
{
/* stub */
}
static int
NDSAUD_Init(SDL_AudioDriverImpl * impl)
{
/* Set the function pointers */
impl->OpenDevice = NDSAUD_OpenDevice;
impl->PlayDevice = NDSAUD_PlayDevice;
impl->WaitDevice = NDSAUD_WaitDevice;
impl->GetDeviceBuf = NDSAUD_GetDeviceBuf;
impl->CloseDevice = NDSAUD_CloseDevice;
/* and the capabilities */
impl->HasCaptureSupport = 1;
impl->OnlyHasDefaultOutputDevice = 1;
impl->OnlyHasDefaultInputDevice = 1;
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return 1; /* this audio target is available. */
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}
AudioBootStrap NDSAUD_bootstrap = {
"nds", "SDL NDS audio driver", NDSAUD_Init, 0 /*1? */
};
/* vi: set ts=4 sw=4 expandtab: */