From 5c0e406dfb7fa4f7b590ce640b02ccde96070357 Mon Sep 17 00:00:00 2001
From: Kuba <132459354+KubaPro010@users.noreply.github.com>
Date: Fri, 3 Nov 2023 10:22:32 +0000
Subject: [PATCH] rds volume?

---
 src/pifmrds/fm_mpx.c | 2 +-
 src/pifmrds/rds.c    | 4 ++--
 src/pifmrds/rds.h    | 2 +-
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/pifmrds/fm_mpx.c b/src/pifmrds/fm_mpx.c
index db047c5..2bdd330 100644
--- a/src/pifmrds/fm_mpx.c
+++ b/src/pifmrds/fm_mpx.c
@@ -195,7 +195,7 @@ int fm_mpx_open(char *filename, size_t len, int raw, double preemphasis, int raw
 // 10 after.
 int fm_mpx_get_samples(float *mpx_buffer, int drds, float compressor_decay, float compressor_attack, float compressor_max_gain_recip, int disablestereo, float gain, int enablecompressor, int rds_ct_enabled) {
     int stereo_capable = (channels > 1) && (!disablestereo); //chatgpt
-    if(!drds) get_rds_samples(mpx_buffer, length, stereo_capable, rds_ct_enabled);
+    if(!drds) get_rds_samples(mpx_buffer, length, stereo_capable, rds_ct_enabled, 1.0);
 
     if(inf == NULL) return 0; // if there is no audio, stop here
     
diff --git a/src/pifmrds/rds.c b/src/pifmrds/rds.c
index 4714d84..85258d8 100644
--- a/src/pifmrds/rds.c
+++ b/src/pifmrds/rds.c
@@ -185,7 +185,7 @@ void get_rds_group(int *buffer, int stereo, int ct_clock_enabled) {
    envelope with a 57 kHz carrier, which is very efficient as 57 kHz is 4 times the
    sample frequency we are working at (228 kHz).
  */
-void get_rds_samples(float *buffer, int count, int stereo, int ct_clock_enabled) {
+void get_rds_samples(float *buffer, int count, int stereo, int ct_clock_enabled, float sample_volume) {
     static int bit_buffer[BITS_PER_GROUP];
     static int bit_pos = BITS_PER_GROUP;
     static float sample_buffer[SAMPLE_BUFFER_SIZE] = {0};
@@ -248,7 +248,7 @@ void get_rds_samples(float *buffer, int count, int stereo, int ct_clock_enabled)
         phase++;
         if(phase >= 4) phase = 0;
         
-        *buffer++ = sample;
+        *buffer++ = (sample * sample_volume);
         sample_count++;
     }
 }
diff --git a/src/pifmrds/rds.h b/src/pifmrds/rds.h
index bced71b..f289c7e 100644
--- a/src/pifmrds/rds.h
+++ b/src/pifmrds/rds.h
@@ -24,7 +24,7 @@
 
 #include <stdint.h>
 
-extern void get_rds_samples(float *buffer, int count, int stereo, int ct_clock_enabled);
+extern void get_rds_samples(float *buffer, int count, int stereo, int ct_clock_enabled, float sample_volume=1.0);
 extern void set_rds_pi(uint16_t pi_code);
 extern void set_rds_rt(char *rt);
 extern void set_rds_ps(char *ps);