commit 21a79a50b54df8b3c377f275e1d7bfa76ee50899
Author: Miro Kropacek <miro.kropacek@gmail.com>
Date:   Tue Oct 31 23:48:25 2023 +0100

    Introduce "print_rate"
    
    This will never go to upstream.

diff --git a/audio/rate.cpp b/audio/rate.cpp
index 7f0c50f9250..83dde41462f 100644
--- a/audio/rate.cpp
+++ b/audio/rate.cpp
@@ -30,6 +30,8 @@
 #include "audio/audiostream.h"
 #include "audio/rate.h"
 #include "audio/mixer.h"
+#include "backends/platform/atari/atari-debug.h"
+#include "common/config-manager.h"
 #include "common/util.h"
 
 namespace Audio {
@@ -80,6 +82,20 @@ private:
 	int simpleConvert(AudioStream &input, st_sample_t *outBuffer, st_size_t numSamples, st_volume_t vol_l, st_volume_t vol_r);
 	int interpolateConvert(AudioStream &input, st_sample_t *outBuffer, st_size_t numSamples, st_volume_t vol_l, st_volume_t vol_r);
 
+	void printConvertType(const Common::String &name) {
+		const Common::ConfigManager::Domain *activeDomain = ConfMan.getActiveDomain();
+		if (activeDomain && ConfMan.getBool("print_rate")) {
+			static st_rate_t previousInRate, previousOutRate;
+			if (previousInRate != _inRate || previousOutRate != _outRate) {
+				previousInRate = _inRate;
+				previousOutRate = _outRate;
+				atari_debug("RateConverter_Impl::%s[%s]: inRate %d Hz (%s) => outRate %d Hz (%s)",
+					  name.c_str(), activeDomain->getValOrDefault("gameid").c_str(),
+					  _inRate, inStereo ? "stereo" : "mono", _outRate, outStereo ? "stereo" : "mono");
+			}
+		}
+	}
+
 public:
 	RateConverter_Impl(st_rate_t inputRate, st_rate_t outputRate);
 	virtual ~RateConverter_Impl() {}
@@ -99,6 +115,8 @@ template<bool inStereo, bool outStereo, bool reverseStereo>
 int RateConverter_Impl<inStereo, outStereo, reverseStereo>::copyConvert(AudioStream &input, st_sample_t *outBuffer, st_size_t numSamples, st_volume_t volL, st_volume_t volR) {
 	st_sample_t *outStart, *outEnd;
 
+	printConvertType("copyConvert");
+
 	outStart = outBuffer;
 	outEnd = outBuffer + numSamples * (outStereo ? 2 : 1);
 
@@ -148,6 +166,8 @@ int RateConverter_Impl<inStereo, outStereo, reverseStereo>::simpleConvert(AudioS
 
 	st_sample_t *outStart, *outEnd;
 
+	printConvertType("simpleConvert");
+
 	outStart = outBuffer;
 	outEnd = outBuffer + numSamples * (outStereo ? 2 : 1);
 
@@ -209,6 +229,8 @@ int RateConverter_Impl<inStereo, outStereo, reverseStereo>::interpolateConvert(A
 	outStart = outBuffer;
 	outEnd = outBuffer + numSamples * (outStereo ? 2 : 1);
 
+	printConvertType("interpolateConvert");
+
 	while (outBuffer < outEnd) {
 		// Read enough input samples so that _outPosFrac < 0
 		while ((frac_t)FRAC_ONE_LOW <= _outPosFrac) {