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Diffstat (limited to 'include/libnds/nds/arm7/audio.h')
| -rw-r--r-- | include/libnds/nds/arm7/audio.h | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/include/libnds/nds/arm7/audio.h b/include/libnds/nds/arm7/audio.h new file mode 100644 index 0000000000..9c0c2e4502 --- /dev/null +++ b/include/libnds/nds/arm7/audio.h @@ -0,0 +1,139 @@ +/*--------------------------------------------------------------------------------- + ARM7 audio control + + Copyright (C) 2005 + Michael Noland (joat) + Jason Rogers (dovoto) + Dave Murphy (WinterMute) + + This software is provided 'as-is', without any express or implied + warranty. In no event will the authors be held liable for any + damages arising from the use of this software. + + Permission is granted to anyone to use this software for any + purpose, including commercial applications, and to alter it and + redistribute it freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you + must not claim that you wrote the original software. If you use + this software in a product, an acknowledgment in the product + documentation would be appreciated but is not required. + 2. Altered source versions must be plainly marked as such, and + must not be misrepresented as being the original software. + 3. This notice may not be removed or altered from any source + distribution. + +---------------------------------------------------------------------------------*/ + +#ifndef AUDIO_ARM7_INCLUDE +#define AUDIO_ARM7_INCLUDE + +//--------------------------------------------------------------------------------- +// Sound (ARM7 only) +//--------------------------------------------------------------------------------- +#ifndef ARM7 +#error Audio is only available on the ARM7 +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +#include <nds/arm7/serial.h> + + +#define SOUND_VOL(n) (n) +#define SOUND_FREQ(n) ((-0x1000000 / (n))) +#define SOUND_ENABLE BIT(15) +#define SOUND_REPEAT BIT(27) +#define SOUND_ONE_SHOT BIT(28) +#define SOUND_FORMAT_16BIT (1<<29) +#define SOUND_FORMAT_8BIT (0<<29) +#define SOUND_FORMAT_PSG (3<<29) +#define SOUND_FORMAT_ADPCM (2<<29) +#define SOUND_16BIT (1<<29) +#define SOUND_8BIT (0) + +#define SOUND_PAN(n) ((n) << 16) + +#define SCHANNEL_ENABLE BIT(31) + +//--------------------------------------------------------------------------------- +// registers +//--------------------------------------------------------------------------------- +#define SCHANNEL_CR(n) (*(vuint32*)(0x04000400 + ((n)<<4))) +#define SCHANNEL_VOL(n) (*(vuint8*)(0x04000400 + ((n)<<4))) +#define SCHANNEL_PAN(n) (*(vuint8*)(0x04000402 + ((n)<<4))) +#define SCHANNEL_SOURCE(n) (*(vuint32*)(0x04000404 + ((n)<<4))) +#define SCHANNEL_TIMER(n) (*(vint16*)(0x04000408 + ((n)<<4))) +#define SCHANNEL_REPEAT_POINT(n) (*(vuint16*)(0x0400040A + ((n)<<4))) +#define SCHANNEL_LENGTH(n) (*(vuint32*)(0x0400040C + ((n)<<4))) + +#define SOUND_CR (*(vuint16*)0x04000500) +#define SOUND_MASTER_VOL (*(vuint8*)0x04000500) + +//--------------------------------------------------------------------------------- +// not sure on the following +//--------------------------------------------------------------------------------- +#define SOUND_BIAS (*(vuint16*)0x04000504) +#define SOUND508 (*(vuint16*)0x04000508) +#define SOUND510 (*(vuint16*)0x04000510) +#define SOUND514 (*(vuint16*)0x04000514) +#define SOUND518 (*(vuint16*)0x04000518) +#define SOUND51C (*(vuint16*)0x0400051C) + + +/*--------------------------------------------------------------------------------- + microphone code based on neimod's microphone example. + See: http://neimod.com/dstek/ + Chris Double (chris.double@double.co.nz) + http://www.double.co.nz/nintendo_ds +---------------------------------------------------------------------------------*/ + + +/*--------------------------------------------------------------------------------- + Read a byte from the microphone +---------------------------------------------------------------------------------*/ +u8 MIC_ReadData(void); + +/*--------------------------------------------------------------------------------- + Fill the buffer with data from the microphone. The buffer will be + signed sound data at 16kHz. Once the length of the buffer is + reached, no more data will be stored. Uses ARM7 timer 0. +---------------------------------------------------------------------------------*/ +void StartRecording(u8* buffer, int length); + +/*--------------------------------------------------------------------------------- + Stop recording data, and return the length of data recorded. +---------------------------------------------------------------------------------*/ +int StopRecording(void); + +/* This must be called during IRQ_TIMER0 */ +void ProcessMicrophoneTimerIRQ(void); + +void PM_SetAmp(u8 control); + +//--------------------------------------------------------------------------------- +// Turn the microphone on +//--------------------------------------------------------------------------------- +static inline void MIC_On(void) { +//--------------------------------------------------------------------------------- + PM_SetAmp(PM_AMP_ON); +} + + +//--------------------------------------------------------------------------------- +// Turn the microphone off +//--------------------------------------------------------------------------------- +static inline void MIC_Off(void) { +//--------------------------------------------------------------------------------- + PM_SetAmp(PM_AMP_OFF); +} + + +#ifdef __cplusplus +} +#endif + +#endif + |