/*
* start_next_sample
*
* Play a sample that has been delayed until the previous sound effect has
* finished. This is necessary for two samples in The Lurking Horror that
* immediately follow other samples.
*
*/
static void start_next_sample (void)
{
if (next_sample != 0)
start_sample (next_sample, next_volume, 0, 0);
next_sample = 0;
next_volume = 0;
}/* start_next_sample */
void GlkInterface::start_next_sample() {
if (next_sample != 0)
start_sample(next_sample, next_volume, 0, 0);
next_sample = 0;
next_volume = 0;
}
/*
* z_sound_effect, load / play / stop / discard a sound effect.
*
* zargs[0] = number of bleep (1 or 2) or sample
* zargs[1] = operation to perform (samples only)
* zargs[2] = repeats and volume (play sample only)
* zargs[3] = end-of-sound routine (play sample only, optional)
*
* Note: Volumes range from 1 to 8, volume 255 is the default volume.
* Repeats are stored in the high byte, 255 is infinite loop.
*
*/
void z_sound_effect (void)
{
zword number = zargs[0];
zword effect = zargs[1];
zword volume = zargs[2];
/* By default play sound 1 at volume 8 */
if (zargc < 1)
number = 1;
if (zargc < 2)
effect = EFFECT_PLAY;
if (zargc < 3)
volume = 8;
if (number >= 3 || number == 0) {
locked = TRUE;
if (story_id == LURKING_HORROR && (number == 9 || number == 16)) {
if (effect == EFFECT_PLAY) {
next_sample = number;
next_volume = volume;
locked = FALSE;
if (!playing)
start_next_sample ();
} else locked = FALSE;
return;
}
playing = FALSE;
switch (effect) {
case EFFECT_PREPARE:
os_prepare_sample (number);
break;
case EFFECT_PLAY:
start_sample (number, lo (volume), hi (volume), (zargc == 4) ? zargs[3] : 0);
break;
case EFFECT_STOP:
os_stop_sample ();
break;
case EFFECT_FINISH_WITH:
os_finish_with_sample ();
break;
}
locked = FALSE;
} else os_beep (number);
}/* z_sound_effect */
static void adc_start_sample(int chan)
{
set_chan_list(chan, 1);
set_avg_mode(chan, NO_AVG_MODE, SAMPLE_NUM_1);
set_sample_mux(chan, g_chan_mux[chan]);
set_detect_mux(g_chan_mux[chan]);
set_idle_mux(g_chan_mux[chan]); // for revb
enable_sample_engine();
start_sample();
adc_sample_time = 0;
}
int get_adc_sample(int chan)
{
int count;
int value = -1;
int sum;
set_chan_list(chan, 1);
set_avg_mode(chan, NO_AVG_MODE, SAMPLE_NUM_8);
set_sample_mux(chan, g_chan_mux[chan]);
set_detect_mux(g_chan_mux[chan]);
set_idle_mux(g_chan_mux[chan]); // for revb
enable_sample_engine();
start_sample();
// Read any CBUS register to delay one clock
// cycle after starting the sampling engine
// The bus is really fast and we may miss that it started
{ count = READ_CBUS_REG(ISA_TIMERE); }
count = 0;
while (delta_busy() || sample_busy() || avg_busy()){
if (++count > 10000){
printf("ADC busy error.\n");
goto adc_sample_end;
}
}
stop_sample();
sum = 0;
count = 0;
value = get_fifo_sample();
while (get_fifo_cnt()){
value = get_fifo_sample() & 0x3ff;
if ((value != 0x1fe) && (value != 0x1ff)){
sum += value & 0x3ff;
count++;
}
}
value = (count) ? (sum / count) : (-1);
adc_sample_end:
#if AML_ADC_SAMPLE_DEBUG
printf("ch%d = %d, count=%d\n", chan, value, count);
#endif //AML_ADC_SAMPLE_DEBUG
disable_sample_engine();
set_sc_phase();
return value;
}
int get_adc_sample(int chan)
{
int count;
int value;
int sum;
if (!gp_saradc)
return -1;
spin_lock(&gp_saradc->lock);
set_chan_list(chan, 1);
set_avg_mode(chan, NO_AVG_MODE, SAMPLE_NUM_8);
set_sample_mux(chan, chan_mux[chan]);
set_detect_mux(chan_mux[chan]);
set_idle_mux(chan_mux[chan]); // for revb
enable_sample_engine();
start_sample();
// Read any CBUS register to delay one clock cycle after starting the sampling engine
// The bus is really fast and we may miss that it started
{ count = get_reg(ISA_TIMERE); }
count = 0;
while (delta_busy() || sample_busy() || avg_busy()) {
if (++count > 10000) {
printk(KERN_ERR "ADC busy error.\n");
goto end;
}
}
stop_sample();
sum = 0;
count = 0;
value = get_fifo_sample();
while (get_fifo_cnt()) {
value = get_fifo_sample() & 0x3ff;
if ((value != 0x1fe) && (value != 0x1ff)) {
sum += value & 0x3ff;
count++;
}
}
value = (count) ? (sum / count) : (-1);
end:
//printk("ch%d = %d, count=%d\n", chan, value, count);
disable_sample_engine();
spin_unlock(&gp_saradc->lock);
return value;
}