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Tone generator class

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This commit is contained in:
furrtek 2017-11-10 00:25:04 +00:00
parent 32ae059c44
commit 1b93dd53e8
16 changed files with 143 additions and 78 deletions
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40
firmware/baseband/proc_mictx.cpp
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@ -39,48 +39,43 @@ void MicTXProcessor::execute(const buffer_c8_t& buffer){
for (size_t i = 0; i < buffer.count; i++) {
if (!play_beep) {
sample = audio_buffer.p[i >> 6] >> 8; // 1536000 / 64 = 24000
sample = audio_buffer.p[i >> 6] >> 8; // 1536000 / 64 = 24000
sample = (sample * (int32_t)gain_x10) / 10;
power += (sample < 0) ? -sample : sample; // Power average for UI vu-meter
power_acc += (sample < 0) ? -sample : sample; // Power average for UI vu-meter
if (!as) {
as = divider;
level_message.value = power / (divider / 4); // Why ?
shared_memory.application_queue.push(level_message);
power = 0;
if (power_acc_count) {
power_acc_count--;
} else {
as--;
power_acc_count = divider;
level_message.value = power_acc / (divider / 4); // Why ?
shared_memory.application_queue.push(level_message);
power_acc = 0;
}
} else {
if (beep_timer) {
beep_timer--;
} else {
beep_timer = 76800; // 50ms @ 1536000Hz
beep_timer = baseband_fs * 0.05; // 50ms
if (beep_index == BEEP_TONES_NB) {
configured = false;
fm_delta = 0; // Zero-out the IQ output for the rest of the buffer
shared_memory.application_queue.push(txprogress_message);
} else {
beep_phase_inc = beep_deltas[beep_index];
beep_gen.configure(beep_deltas[beep_index], 1.0);
beep_index++;
}
}
sample = sine_table_i8[(beep_phase & 0xFF000000U) >> 24];
beep_phase += beep_phase_inc;
sample = beep_gen.process(0);
}
if (ctcss_enabled) {
ctcss_sample = sine_table_i8[(ctcss_phase & 0xFF000000U) >> 24];
sample_mixed = ((sample * 205) + (ctcss_sample * 50)) / 256; // ~20%
ctcss_phase += ctcss_phase_inc;
} else {
sample_mixed = sample;
}
sample = tone_gen.process(sample);
// FM
if (fm_delta) {
delta = sample_mixed * fm_delta;
delta = sample * fm_delta;
phase += delta;
sphase = phase + (64 << 24);
@ -105,8 +100,9 @@ void MicTXProcessor::on_message(const Message* const msg) {
fm_delta = config_message.fm_delta * (0xFFFFFFULL / baseband_fs);
gain_x10 = config_message.gain_x10;
divider = config_message.divider;
ctcss_enabled = config_message.ctcss_enabled;
ctcss_phase_inc = config_message.ctcss_phase_inc;
power_acc_count = 0;
tone_gen.configure(config_message.tone_key_delta, config_message.tone_key_mix_weight);
txprogress_message.done = true;