audio sender: use colors for sample cnt summary

Author: MartinPulec

src/audio/audio.cpp

@@ -86,6 +86,7 @@
 #include "ug_runtime_error.hpp"
 #include "utils/color_out.h"
 #include "utils/net.h"
+#include "utils/misc.h"                 // for get_stat_color
 #include "utils/sdp.h"
 #include "utils/string_view_utils.hpp"
 #include "utils/thread.h"
@@ -987,9 +988,14 @@ struct asend_stats_processing_data {
 static void *asend_compute_and_print_stats(void *arg) {
         auto *d = (struct asend_stats_processing_data*) arg;
 
-        log_msg(LOG_LEVEL_INFO, "[Audio sender] Sent %d samples in last %f seconds.\n",
-                        d->frame.get_sample_count(),
-                        d->seconds);
+        const double exp_samples = d->frame.get_sample_rate() * d->seconds;
+        const char  *dec_cnt_warn_col =
+            get_stat_color(d->frame.get_sample_count() / exp_samples);
+
+        log_msg(LOG_LEVEL_INFO,
+                "[Audio sender] Sent %s%d samples" TERM_FG_RESET
+                " in last %f seconds.\n",
+                dec_cnt_warn_col, d->frame.get_sample_count(), d->seconds);
 
         char volume[STR_LEN];
         char *vol_start = volume;

src/utils/misc.cpp

@@ -344,3 +344,22 @@ bool invalid_arg_is_numeric(const char *what) {
         return strncmp(what, "stoi", 4) == 0 || strncmp(what, "stod", 4) == 0;
 }
 
+/**
+ * get warning color for status printout
+ *
+ * If ratio is <= 0.98 or >= 1.02, return "warning" color (different for 2% and
+ * 5% outside the range). Note that the caller must also output TERM_RESET or
+ * TERM_FG_RESET to reset the terminal FG color.
+ *
+ * @returns the color (or "")
+ */
+const char *
+get_stat_color(double ratio)
+{
+        const double diff = fabs(1 - ratio);
+        if (diff < 0.02) {
+                return "";
+        }
+        return diff < 0.05 ? T256_FG_SYM(T_ARCTIC_LIME)
+                           : T256_FG_SYM(T_SADDLE_BROWN);
+}

src/utils/misc.h

@@ -73,6 +73,8 @@ void print_module_usage(const char *module_name, const struct key_val *options,
 
 bool invalid_arg_is_numeric(const char *what);
 
+const char *get_stat_color(double ratio);
+
 #ifdef __cplusplus
 }
 #endif