radio95/rds95
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change some ascii logic, reduce source code size, redo some functions and add another way to save rdsmodulator data (this one needs both enc and mod data refresh)

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kuba
2025-04-14 16:19:08 +02:00
parent 72a7419317
commit ea645c3061
7 changed files with 253 additions and 369 deletions
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src/modulator.c
+40 -27
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@@ -3,53 +3,75 @@
static float waveform[2][FILTER_SIZE];
void Modulator_saveToFile(RDSModulatorParameters *emp, const char *option) {
char encoderPath[256];
snprintf(encoderPath, sizeof(encoderPath), "%s/.rdsModulator", getenv("HOME"));
char modulatorPath[128];
snprintf(modulatorPath, sizeof(modulatorPath), "%s/.rdsModulator", getenv("HOME"));
FILE *file;
RDSModulatorParameters tempEncoder;
file = fopen(encoderPath, "rb");
RDSModulatorParameters tempMod;
RDSModulatorParametersFile tempFile;
file = fopen(modulatorPath, "rb");
if (file != NULL) {
fread(&tempEncoder, sizeof(RDSModulatorParameters), 1, file);
fread(&tempFile, sizeof(RDSModulatorParametersFile), 1, file);
fclose(file);
} else {
memcpy(&tempEncoder, emp, sizeof(RDSModulatorParameters));
memset(&tempFile, 0, sizeof(RDSModulatorParametersFile));
tempFile.check = 160;
memcpy(&tempFile.params, emp, sizeof(RDSModulatorParameters));
tempFile.crc = crc16_ccitt((char*)&tempFile, sizeof(RDSModulatorParametersFile) - sizeof(uint16_t));
}
memcpy(&tempMod, &tempFile.params, sizeof(RDSModulatorParameters));
if (strcmp(option, "LEVEL") == 0) {
tempEncoder.level = emp->level;
tempMod.level = emp->level;
} else if (strcmp(option, "RDSGEN") == 0) {
tempEncoder.rdsgen = emp->rdsgen;
tempMod.rdsgen = emp->rdsgen;
} else if (strcmp(option, "ALL") == 0) {
tempEncoder.level = emp->level;
tempEncoder.rdsgen = emp->rdsgen;
tempMod.level = emp->level;
tempMod.rdsgen = emp->rdsgen;
} else {
return;
}
memcpy(&tempFile.params, &tempMod, sizeof(RDSModulatorParameters));
tempFile.check = 160;
tempFile.crc = crc16_ccitt((char*)&tempFile, sizeof(RDSModulatorParametersFile) - sizeof(uint16_t));
file = fopen(encoderPath, "wb");
file = fopen(modulatorPath, "wb");
if (file == NULL) {
perror("Error opening file");
return;
}
fwrite(&tempEncoder, sizeof(RDSModulatorParameters), 1, file);
fwrite(&tempFile, sizeof(RDSModulatorParameters), 1, file);
fclose(file);
}
void Modulator_loadFromFile(RDSModulatorParameters *emp) {
char encoderPath[256];
snprintf(encoderPath, sizeof(encoderPath), "%s/.rdsModulator", getenv("HOME"));
FILE *file = fopen(encoderPath, "rb");
char modulatorPath[128];
snprintf(modulatorPath, sizeof(modulatorPath), "%s/.rdsModulator", getenv("HOME"));
FILE *file = fopen(modulatorPath, "rb");
if (file == NULL) {
perror("Error opening file");
return;
}
fread(emp, sizeof(RDSModulatorParameters), 1, file);
RDSModulatorParametersFile tempFile;
fread(&tempFile, sizeof(RDSModulatorParametersFile), 1, file);
if (tempFile.check != 160) {
fprintf(stderr, "[RDSMODULATOR-FILE] Invalid file format\n");
fclose(file);
return;
}
uint16_t calculated_crc = crc16_ccitt((char*)&tempFile, sizeof(RDSModulatorParametersFile) - sizeof(uint16_t));
if (calculated_crc != tempFile.crc) {
fprintf(stderr, "[RDSMODULATOR-FILE] CRC mismatch! Data may be corrupted\n");
fclose(file);
return;
}
memcpy(emp, &tempFile.params, sizeof(RDSModulatorParameters));
fclose(file);
}
int modulatorsaved() {
char encoderPath[256];
char encoderPath[128];
snprintf(encoderPath, sizeof(encoderPath), "%s/.rdsModulator", getenv("HOME"));
FILE *file = fopen(encoderPath, "rb");
if (file) {
@@ -121,15 +143,6 @@ float get_rds_sample(RDSModulator* rdsMod, uint8_t stream) {
rdsMod->data[stream].sample_buffer[rdsMod->data[stream].out_sample_index++] = 0;
if (rdsMod->data[stream].out_sample_index == SAMPLE_BUFFER_SIZE) rdsMod->data[stream].out_sample_index = 0;
uint8_t tooutput = 1;
if (rdsMod->params.rdsgen == 0) {
tooutput = 0;
} else {
if(rdsMod->params.rdsgen == 1) {
if (stream == 1) {
tooutput = 0;
}
}
}
uint8_t tooutput = rdsMod->params.rdsgen > stream ? 1 : 0;
return sample*rdsMod->params.level*tooutput;
}