int main(void) {
u32 stretch;
u32 samp_i;
/* Initialisation de plb_ac97 : */
XAC97_HardReset(PLB_AC97_BASEADDR);
XAC97_InitAudio(PLB_AC97_BASEADDR, 0);
XAC97_ClearFifos(PLB_AC97_BASEADDR);
/* Ajustement du volume audio : */
XAC97_WriteReg(PLB_AC97_BASEADDR, AC97_MasterVol, AC97_VOL_MAX);
XAC97_WriteReg(PLB_AC97_BASEADDR, AC97_AuxOutVol, AC97_VOL_ATTN_6_0_DB);
XAC97_WriteReg(PLB_AC97_BASEADDR, AC97_PCMOutVol, AC97_VOL_ATTN_6_0_DB);
/* Boucler : */
for (;;) {
for (samp_i = 0; samp_i < NUM_SAMPLES; ++samp_i) {
for (stretch = 0; stretch < STRETCH; ++stretch) {
XAC97_WriteFifo(PLB_AC97_BASEADDR, g_samples[samp_i]);
}
}
}
return 0;
}
// Inits the AC97. Note: you must also enable interrupts by either calling
// sound_initInterupts, or create your own interrupt handler routine.
void sound_initAC97()
{
XAC97_HardReset(XPAR_AXI_AC97_0_BASEADDR);
XAC97_ClearFifos(XPAR_AXI_AC97_0_BASEADDR);
XAC97_WriteReg(XPAR_AXI_AC97_0_BASEADDR, AC97_ExtendedAudioStat, AC97_EXTENDED_AUDIO_CONTROL_VRA);
XAC97_AwaitCodecReady(XPAR_AXI_AC97_0_BASEADDR);
XAC97_WriteReg(XPAR_AXI_AC97_0_BASEADDR, AC97_PCM_DAC_Rate, AC97_PCM_RATE_11025_HZ);
XAC97_AwaitCodecReady(XPAR_AXI_AC97_0_BASEADDR);
XAC97_mSetControl(XPAR_AXI_AC97_0_BASEADDR, AC97_ENABLE_IN_FIFO_INTERRUPT);
XAC97_Delay(100000);
}
int interruptManager (unsigned int * framePointer0) {
init_platform();
// Initialize the GPIO peripherals.
int success;
// Used for CPU utilization. Uncomment if desired
// XTmrCtr_Initialize(instPtr, 0);
success = XGpio_Initialize(&gpPB, XPAR_PUSH_BUTTONS_5BITS_DEVICE_ID);
// Set the push button peripheral to be inputs.
XGpio_SetDataDirection(&gpPB, 1, 0x0000001F);
// Enable the global GPIO interrupt for push buttons.
XGpio_InterruptGlobalEnable(&gpPB);
// Enable all interrupts in the push button peripheral.
XGpio_InterruptEnable(&gpPB, 0xFFFFFFFF);
// Reset the XAC97 Chip
XAC97_HardReset(XPAR_AXI_AC97_0_BASEADDR);
XAC97_mSetControl(XPAR_AXI_AC97_0_BASEADDR, AC97_ENABLE_IN_FIFO_INTERRUPT);
XAC97_mSetControl(AC97_ExtendedAudioStat, AC97_EXTENDED_AUDIO_CONTROL_VRA);
setVolLevel(AC97_VOL_MAX);
clearAllSounds();
microblaze_register_handler(interrupt_handler_dispatcher, NULL);
XIntc_EnableIntr(XPAR_INTC_0_BASEADDR,
(XPAR_FIT_TIMER_0_INTERRUPT_MASK | XPAR_PUSH_BUTTONS_5BITS_IP2INTC_IRPT_MASK | XPAR_AXI_AC97_0_INTERRUPT_MASK));
XIntc_MasterEnable(XPAR_INTC_0_BASEADDR);
microblaze_enable_interrupts();
// Uncomment for CPU utilization stats
/*XTmrCtr Timer;
XTmrCtr *instPtr = &Timer;
XTmrCtr_Initialize(instPtr, 0);
XTmrCtr_Start(instPtr, 0);*/
while(!isEndOfGame()); // Program never ends.
// Uncomment for CPU utilization stats
/*XTmrCtr_Stop(instPtr, 0);
int val = (int) XTmrCtr_GetValue(instPtr, 0);
xil_printf("%d\n\r", val);*/
clearAllSounds();
XAC97_ClearFifos(XPAR_AXI_AC97_0_BASEADDR);
drawGameOver();
cleanup_platform();
return 0;
}
// This function writes data to the XAC97.
void fifo_writer(int* array, int frameNums){
int diff;
if (indexInArray == 0){ // This means that the function will begin playing a new sound
pointInArray = array; // The pointInArray iterator is set to the beginning of the sound array
setSwitchContext(false); // Disable the ability to assign new sound flags
}
if (indexInArray + XAC97_FIFO_BUFFER_SIZE >= frameNums){ // This means we've reached the end of a sound data array
diff = indexInArray + XAC97_FIFO_BUFFER_SIZE - frameNums; // This is the number of array locations to the end of the array
XAC97_PlayAudio(XPAR_AXI_AC97_0_BASEADDR, pointInArray, pointInArray+diff); // Play the audio
pointInArray = array; // Reset the point in the array
indexInArray = 0; // Reset the index in the array
setSwitchContext(true); // Allow other sound flags to be set
clearAllSounds(); // Clear all sounds (except for the saucerHighPitch)
XAC97_ClearFifos(XPAR_AXI_AC97_0_BASEADDR); // Clear the FIFO of all data
XAC97_mSetControl(XPAR_AXI_AC97_0_BASEADDR, AC97_ENABLE_IN_FIFO_INTERRUPT); // Re-enable interrupts
} else {
XAC97_PlayAudio(XPAR_AXI_AC97_0_BASEADDR, pointInArray, pointInArray+XAC97_FIFO_BUFFER_SIZE);// This means we're in the middle of a sound data array
pointInArray += XAC97_FIFO_BUFFER_SIZE; // Increment the pointInArray by how much was written to FIFO
indexInArray += XAC97_FIFO_BUFFER_SIZE; // Increment the indexInArray by how much was written to FIFO
}
}
void Foliage::SoundManager::init()
{
// hard reset & initialization
XAC97_HardReset(XPAR_AUDIO_CODEC_BASEADDR);
XAC97_InitAudio(XPAR_AUDIO_CODEC_BASEADDR, AC97_ANALOG_LOOPBACK);
XAC97_DisableInput(XPAR_AUDIO_CODEC_BASEADDR, AC97_MIC_INPUT);
XAC97_DisableInput(XPAR_AUDIO_CODEC_BASEADDR, AC97_LINE_INPUT);
XAC97_AwaitCodecReady(XPAR_AUDIO_CODEC_BASEADDR);
// volume settings
XAC97_WriteReg(XPAR_AUDIO_CODEC_BASEADDR, AC97_MasterVol, AC97_VOL_MAX);
XAC97_WriteReg(XPAR_AUDIO_CODEC_BASEADDR, AC97_AuxOutVol, AC97_VOL_MUTE);
XAC97_WriteReg(XPAR_AUDIO_CODEC_BASEADDR, AC97_MasterVolMono, AC97_VOL_MUTE);
XAC97_WriteReg(XPAR_AUDIO_CODEC_BASEADDR, AC97_PCBeepVol, AC97_VOL_MUTE);
XAC97_WriteReg(XPAR_AUDIO_CODEC_BASEADDR, AC97_PhoneInVol, AC97_VOL_MUTE);
XAC97_WriteReg(XPAR_AUDIO_CODEC_BASEADDR, AC97_MicVol, AC97_VOL_MUTE);
XAC97_WriteReg(XPAR_AUDIO_CODEC_BASEADDR, AC97_LineInVol, AC97_VOL_MUTE);
XAC97_WriteReg(XPAR_AUDIO_CODEC_BASEADDR, AC97_CDVol, AC97_VOL_MUTE);
XAC97_WriteReg(XPAR_AUDIO_CODEC_BASEADDR, AC97_VideoVol, AC97_VOL_MUTE);
XAC97_WriteReg(XPAR_AUDIO_CODEC_BASEADDR, AC97_AuxInVol, AC97_VOL_MUTE);
XAC97_WriteReg(XPAR_AUDIO_CODEC_BASEADDR, AC97_PCMOutVol, AC97_VOL_MAX);
XAC97_AwaitCodecReady(XPAR_AUDIO_CODEC_BASEADDR);
// VRA mode OFF
XAC97_WriteReg(XPAR_AUDIO_CODEC_BASEADDR, AC97_ExtendedAudioStat, 0);
// clear FIFOs
XAC97_ClearFifos(XPAR_AUDIO_CODEC_BASEADDR);
// interrupt
XIntc_RegisterHandler(XPAR_OPB_INTC_0_BASEADDR,
XPAR_OPB_INTC_0_AUDIO_CODEC_INTERRUPT_INTR,
(XInterruptHandler)Foliage::SoundManager::AC97_Callback,
NULL);
XAC97_mSetControl(XPAR_AUDIO_CODEC_BASEADDR, AC97_ENABLE_IN_FIFO_INTERRUPT);
std::cout << " * sound manager initialized" << std::endl;
}
