void SoundEngine::initStreaming(int timerChannel)
{
memset(buffer, 0, sizeof buffer);
bufferIndex = 0;
/*
* Next timer tick will populate the first half of the buffer
* (bufferIndex=0) but by the time we get there, the audio
* hardware will already be started on the second half. We want
* the sound hardware and Timer 0 to stay synchronized, so that
* they're always operating on opposite halves of 'buffer'.
*/
timerStart(timerChannel,
ClockDivider_256,
timerFreqToTicks_256(SAMPLE_RATE / SAMPLES_PER_FRAME),
timerCallback);
/*
* Start playing a circular sound buffer that holds 2 frames.
*/
SCHANNEL_SOURCE(CHANNEL_PCSPEAKER) = (uint32_t) &buffer[0];
SCHANNEL_REPEAT_POINT(CHANNEL_PCSPEAKER) = 0;
SCHANNEL_LENGTH(CHANNEL_PCSPEAKER) = BUFFER_SIZE / sizeof(uint32_t);
SCHANNEL_TIMER(CHANNEL_PCSPEAKER) = SOUND_FREQ(SAMPLE_RATE);
SCHANNEL_CR(CHANNEL_PCSPEAKER) = SCHANNEL_ENABLE |
SOUND_VOL(127) |
SOUND_PAN(64) |
SOUND_REPEAT |
SOUND_FORMAT_8BIT;
}
//---------------------------------------------------------------------------------
void startSound(int sampleRate, const void* data, u32 bytes, u8 channel, u8 vol, u8 pan, u8 format) {
//---------------------------------------------------------------------------------
SCHANNEL_TIMER(channel) = SOUND_FREQ(sampleRate);
SCHANNEL_SOURCE(channel) = (u32)data;
SCHANNEL_LENGTH(channel) = bytes >> 2 ;
SCHANNEL_CR(channel) = SCHANNEL_ENABLE | SOUND_ONE_SHOT | SOUND_VOL(vol) | SOUND_PAN(pan) | (format==1?SOUND_8BIT:SOUND_16BIT);
}
void restartsound(int ch) {
chan = ch;
SCHANNEL_CR(0)=SCHANNEL_ENABLE|SOUND_REPEAT |SOUND_VOL(0x3F)|SOUND_PAN(0x40)|SOUND_FORMAT_16BIT;
SCHANNEL_CR(1)=SCHANNEL_ENABLE|SOUND_REPEAT |SOUND_VOL(0x3F)|SOUND_PAN(0x40)|SOUND_FORMAT_16BIT;
SCHANNEL_CR(2)=SCHANNEL_ENABLE|SOUND_REPEAT |SOUND_VOL(0x3F)|SOUND_PAN(0x40)|SOUND_FORMAT_16BIT;
SCHANNEL_CR(3)=SCHANNEL_ENABLE|SOUND_REPEAT |SOUND_VOL(0x2F)|SOUND_PAN(0x40)|SOUND_FORMAT_16BIT;
SCHANNEL_CR(4)=SCHANNEL_ENABLE|SOUND_REPEAT |SOUND_VOL(0x7F)|SOUND_PAN(0x40)|SOUND_FORMAT_16BIT;
SCHANNEL_CR(5)=SCHANNEL_ENABLE|SOUND_REPEAT |SOUND_VOL(0x60)|SOUND_PAN(0x40)|SOUND_FORMAT_16BIT;
SCHANNEL_CR(6)=SCHANNEL_ENABLE|SOUND_REPEAT |SOUND_VOL(0x7F)|SOUND_PAN(0x40)|SOUND_FORMAT_16BIT;
SCHANNEL_CR(7)=SCHANNEL_ENABLE|SOUND_REPEAT |SOUND_VOL(0x7F)|SOUND_PAN(0x40)|SOUND_FORMAT_16BIT;
SCHANNEL_CR(8)=SCHANNEL_ENABLE|SOUND_REPEAT |SOUND_VOL(0x7F)|SOUND_PAN(0x40)|SOUND_FORMAT_16BIT;
SCHANNEL_CR(10)=SCHANNEL_ENABLE|SOUND_REPEAT |SOUND_VOL(0x7F)|SOUND_PAN(0x40)|SOUND_FORMAT_8BIT;
TIMER0_CR = TIMER_ENABLE;
TIMER1_CR = TIMER_CASCADE | TIMER_IRQ_REQ | TIMER_ENABLE;
}
void startSound(int sampleRate, const void* data, uint32 bytes, u8 channel, u8 vol, u8 pan, u8 format)
{
SCHANNEL_TIMER(channel) = SOUND_FREQ(sampleRate);
SCHANNEL_SOURCE(channel) = (u32)data;
SCHANNEL_LENGTH(channel) = bytes >> 2;
u32 form = 0;
switch(format)
{
case 0:
form = SOUND_FORMAT_16BIT;
break;
case 1:
form = SOUND_FORMAT_8BIT;
break;
case 2:
form = SOUND_FORMAT_ADPCM;
break;
}
SCHANNEL_CR(channel) = SCHANNEL_ENABLE | SOUND_ONE_SHOT | SOUND_VOL(vol) | SOUND_PAN(pan) | form;
}
void ds_adjustchannel(int channel, int vol, int pan)
{
SCHANNEL_CR(channel) = SCHANNEL_ENABLE | SOUND_ONE_SHOT | SOUND_VOL(vol) | SOUND_PAN(pan) | (SOUND_FORMAT_8BIT);
}
