radio95/rds95
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add doc, remove di, add symbol_shifting

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KubaPro010
2025-03-24 16:42:11 +01:00
parent 009649acd7
commit cb9ff77712
7 changed files with 133 additions and 11 deletions
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12
src/modulator.c
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@@ -66,6 +66,8 @@ void init_rds_modulator(RDSModulator* rdsMod, RDSEncoder* enc) {
rdsMod->enc = enc;
if(STREAMS > 0) rdsMod->data[1].symbol_shifting.symbol_shift = SAMPLES_PER_BIT / 2;
for (uint8_t i = 0; i < 2; i++) {
for (uint16_t j = 0; j < FILTER_SIZE; j++) {
waveform[i][j] = i ?
@@ -109,7 +111,15 @@ float get_rds_sample(RDSModulator* rdsMod, uint8_t stream) {
}
rdsMod->data[stream].sample_count++;
sample = rdsMod->data[stream].sample_buffer[rdsMod->data[stream].out_sample_index];
if(rdsMod->data[stream].symbol_shifting.symbol_shift != 0) {
rdsMod->data[stream].symbol_shifting.sample_buffer[rdsMod->data[stream].symbol_shifting.sample_buffer_idx++] = rdsMod->data[stream].sample_buffer[rdsMod->data[stream].out_sample_index];
if (rdsMod->data[stream].symbol_shifting.sample_buffer_idx == rdsMod->data[stream].symbol_shifting.symbol_shift) rdsMod->data[stream].symbol_shifting.sample_buffer_idx = 0;
sample = rdsMod->data[stream].symbol_shifting.sample_buffer[rdsMod->data[stream].symbol_shifting.sample_buffer_idx];
} else {
sample = rdsMod->data[stream].sample_buffer[rdsMod->data[stream].out_sample_index];
}
rdsMod->data[stream].sample_buffer[rdsMod->data[stream].out_sample_index++] = 0;
if (rdsMod->data[stream].out_sample_index == SAMPLE_BUFFER_SIZE)