radio95/fm95
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Code Issues Activity

litlle bit optimizations on init

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This commit is contained in:
KubaPro010
2025-08-04 14:34:16 +02:00
parent de8f4de914
commit 12e54f44e2
4 changed files with 16 additions and 15 deletions
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23
src/fm95.c
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@@ -45,8 +45,8 @@ typedef struct
uint8_t rds_streams;
float clipper_threshold;
float preemphasis;
float tilt;
uint8_t preemphasis;
int8_t tilt;
uint8_t calibration;
float mpx_power;
float mpx_deviation;
@@ -57,7 +57,6 @@ typedef struct
uint32_t sample_rate;
// ini dont edit
char ini_config_path[64];
uint8_t lpf_order;
@@ -216,9 +215,9 @@ int run_fm95(const FM95_Config config, FM95_Runtime* runtime) {
r = apply_preemphasis(&runtime->preemp_r, r);
}
if(config.clipper_threshold != 0) {
l = hard_clip(l*config.audio_volume, config.clipper_threshold);
r = hard_clip(r*config.audio_volume, config.clipper_threshold);
if (config.clipper_threshold != 0) {
l = hard_clip(l * config.audio_volume, config.clipper_threshold);
r = hard_clip(r * config.audio_volume, config.clipper_threshold);
}
mpx = stereo_encode(&runtime->stencode, config.stereo, l, r);
@@ -307,7 +306,7 @@ static int config_handler(void* user, const char* section, const char* name, con
} else if (MATCH("fm95", "clipper_threshold")) {
pconfig->clipper_threshold = strtof(value, NULL);
} else if (MATCH("fm95", "preemphasis")) {
pconfig->preemphasis = strtof(value, NULL) * 1.0e-6f;
pconfig->preemphasis = atoi(value);
} else if (MATCH("fm95", "calibration")) {
pconfig->calibration = atoi(value);
} else if (MATCH("fm95", "mpx_power")) {
@@ -323,7 +322,7 @@ static int config_handler(void* user, const char* section, const char* name, con
} else if (MATCH("fm95", "deviation")) {
pconfig->audio_deviation = strtof(value, NULL);
} else if(MATCH("fm95", "tilt")) {
pconfig->tilt = strtof(value, NULL);
pconfig->tilt = strtof(value, NULL) * 127.0f;
} else if(MATCH("fm95", "bs412_max")) {
pconfig->bs412_max = strtof(value, NULL);
} else if(MATCH("fm95", "agc_target")) {
@@ -446,8 +445,8 @@ void init_runtime(FM95_Runtime* runtime, FM95_Config config, bool rds_on) {
}
if(config.preemphasis != 0) {
init_preemphasis(&runtime->preemp_l, config.preemphasis, config.sample_rate, config.preemp_unity_freq);
init_preemphasis(&runtime->preemp_r, config.preemphasis, config.sample_rate, config.preemp_unity_freq);
init_preemphasis(&runtime->preemp_l, (float)config.preemphasis * 1.0e-6f, config.sample_rate, config.preemp_unity_freq);
init_preemphasis(&runtime->preemp_r, (float)config.preemphasis * 1.0e-6f, config.sample_rate, config.preemp_unity_freq);
}
float last_gain = 0.0f;
@@ -455,7 +454,7 @@ void init_runtime(FM95_Runtime* runtime, FM95_Config config, bool rds_on) {
init_bs412(&runtime->bs412, config.mpx_deviation, config.mpx_power, config.bs412_attack, config.bs412_release, config.bs412_max, config.sample_rate);
runtime->bs412.gain = last_gain;
if(config.tilt != 0) tilt_init(&runtime->tilter, config.tilt);
if(config.tilt != 0) tilt_init(&runtime->tilter, (float)config.tilt / 127.0f);
init_stereo_encoder(&runtime->stencode, 4.0f, &runtime->osc, (config.stereo == 2), config.volumes.mono, config.volumes.pilot, config.volumes.stereo);
@@ -485,7 +484,7 @@ int main(int argc, char **argv) {
.rds_streams = 1, // You have to match this with RDS95, otherwise may god have mercy on your RDS decoders
.clipper_threshold = 1.0f, // At what level for the clipper to work, 1.0f, clips the audio at 1 volt peak to peak, so it will be always between -1 and 1
.preemphasis = 50e-6, // Europe, the "freedomers" use 75µs (75e-6)
.preemphasis = 50, // Europe, the "freedomers" use 75µs
.tilt = 0, // Off
.calibration = 0, // Off
.mpx_power = 3.0f, // dbr, this is for BS412, simplest bs412