int sample_playing(int channel)
{
if (Machine->sample_rate == 0) return 0;
if (channel >= numchannels)
{
logerror("error: sample_playing() called with channel = %d, but only %d channels allocated\n",channel,numchannels);
return 0;
}
return mixer_is_sample_playing(channel + firstchannel);
}
static void playsam3(int param){
// timer 3 (q3) is easy wave
if ((gps_locals.cr3 & 0x80) && (gps_locals.timlat3 > 0) && (gps_locals.reset == 0)) { // output is enabled...
if (mixer_is_sample_playing(gps_locals.channel+2)) { // is already playing
mixer_set_sample_frequency(gps_locals.channel+2,(gps_locals.tfre3*sizeof(sineWaveinp) / 2) );
} else {
mixer_play_sample_16(gps_locals.channel+2,sineWaveinp, sizeof(sineWaveinp), gps_locals.tfre3*sizeof(sineWaveinp) / 2 , 1);
logerror("*** playsam Q3 start %04d ***\n",gps_locals.tfre3);
}
}
}
static void playsam1(int param){
// timer 1 (q1) is easy wave
if ((gps_locals.cr1 & 0x80) && (gps_locals.timlat1 > 0) && (gps_locals.reset == 0)) { // output is enabled...
mixer_play_sample_16(gps_locals.channel,sineWaveinp, sizeof(sineWaveinp), (int)(gps_locals.tfre1*sizeof(sineWaveinp) / 2 / 1.137), 1);
if (mixer_is_sample_playing(gps_locals.channel)) { // is already playing
mixer_set_sample_frequency(gps_locals.channel,(gps_locals.tfre1*sizeof(sineWaveinp) / 2) );
} else {
mixer_play_sample_16(gps_locals.channel,sineWaveinp, sizeof(sineWaveinp), gps_locals.tfre1*sizeof(sineWaveinp) / 2, 1);
logerror("*** playsam Q1 start %04d ***\n",gps_locals.tfre1);
}
}
}
static WRITE_HANDLER(play2s_ctrl_w) {
if (!sndlocals.enSn && (data & 1)) { // sound on to full volume
timer_adjust(sndlocals.timer, TIME_NEVER, 0, 0);
if (!mixer_is_sample_playing(sndlocals.channel)) {
mixer_play_sample(sndlocals.channel, (signed char *)squareWave, sizeof(squareWave), 2950000.0 / 4 / (sndlocals.freq + 1), 1);
}
sndlocals.volume = 100;
mixer_set_volume(sndlocals.channel, sndlocals.volume);
} else if (!(data & 1) && sndlocals.enSn) { // start fading
timer_adjust(sndlocals.timer, TIME_IN_HZ(120), 0, TIME_IN_HZ(120));
}
sndlocals.enSn = data & 1;
}
static void stopSound(void) {
if (mixer_is_sample_playing(atarilocals.channel))
mixer_stop_sample(atarilocals.channel);
}
static void stopNoise(void) {
if (mixer_is_sample_playing(atarilocals.noisechannel))
mixer_stop_sample(atarilocals.noisechannel);
}
static WRITE_HANDLER(play2s_data_w) {
sndlocals.freq = data;
if (mixer_is_sample_playing(sndlocals.channel)) {
mixer_set_sample_frequency(sndlocals.channel, 2950000.0 / 4 / (sndlocals.freq + 1));
}
}
int votrax_status_r(void)
{
return mixer_is_sample_playing(VotraxChannel);
}
