1 files changed, 87 insertions, 11 deletions

diff --git a/indra/newview/llvoiceclient.cpp b/indra/newview/llvoiceclient.cpp
index 250e366087..91353281a8 100644
--- a/indra/newview/llvoiceclient.cpp
+++ b/indra/newview/llvoiceclient.cpp
@@ -42,6 +42,10 @@
 
 const F32 LLVoiceClient::OVERDRIVEN_POWER_LEVEL = 0.7f;
 
+const F32 LLVoiceClient::VOLUME_MIN = 0.f;
+const F32 LLVoiceClient::VOLUME_DEFAULT = 0.5f;
+const F32 LLVoiceClient::VOLUME_MAX = 1.0f;
+
 std::string LLVoiceClientStatusObserver::status2string(LLVoiceClientStatusObserver::EStatusType inStatus)
 {
 	std::string result = "UNKNOWN";
@@ -802,23 +806,85 @@ LLSpeakerVolumeStorage::~LLSpeakerVolumeStorage()
 
 void LLSpeakerVolumeStorage::storeSpeakerVolume(const LLUUID& speaker_id, F32 volume)
 {
-	mSpeakersData[speaker_id] = volume;
+	if ((volume >= LLVoiceClient::VOLUME_MIN) && (volume <= LLVoiceClient::VOLUME_MAX))
+	{
+		mSpeakersData[speaker_id] = volume;
+
+		// Enable this when debugging voice slider issues.  It's way to spammy even for debug-level logging.
+		// LL_DEBUGS("Voice") << "Stored volume = " << volume <<  " for " << id << LL_ENDL;
+	}
+	else
+	{
+		LL_WARNS("Voice") << "Attempted to store out of range volume " << volume << " for " << speaker_id << LL_ENDL;
+		llassert(0);
+	}
 }
 
-S32 LLSpeakerVolumeStorage::getSpeakerVolume(const LLUUID& speaker_id)
+bool LLSpeakerVolumeStorage::getSpeakerVolume(const LLUUID& speaker_id, F32& volume)
 {
-	// Return value of -1 indicates no level is stored for this speaker
-	S32 ret_val = -1;
 	speaker_data_map_t::const_iterator it = mSpeakersData.find(speaker_id);
 	
 	if (it != mSpeakersData.end())
 	{
-		F32 f_val = it->second;
-		// volume can amplify by as much as 4x!
-		S32 ivol = (S32)(400.f * f_val * f_val);
-		ret_val = llclamp(ivol, 0, 400);
+		volume = it->second;
+
+		// Enable this when debugging voice slider issues.  It's way to spammy even for debug-level logging.
+		// LL_DEBUGS("Voice") << "Retrieved stored volume = " << volume <<  " for " << id << LL_ENDL;
+
+		return true;
 	}
-	return ret_val;
+
+	return false;
+}
+
+void LLSpeakerVolumeStorage::removeSpeakerVolume(const LLUUID& speaker_id)
+{
+	mSpeakersData.erase(speaker_id);
+
+	// Enable this when debugging voice slider issues.  It's way to spammy even for debug-level logging.
+	// LL_DEBUGS("Voice") << "Removing stored volume for  " << id << LL_ENDL;
+}
+
+/* static */ F32 LLSpeakerVolumeStorage::transformFromLegacyVolume(F32 volume_in)
+{
+	// Convert to linear-logarithmic [0.0..1.0] with 0.5 = 0dB
+	// from legacy characteristic composed of two square-curves
+	// that intersect at volume_in = 0.5, volume_out = 0.56
+
+	F32 volume_out = 0.f;
+	volume_in = llclamp(volume_in, 0.f, 1.0f);
+
+	if (volume_in <= 0.5f)
+	{
+		volume_out = volume_in * volume_in * 4.f * 0.56f;
+	}
+	else
+	{
+		volume_out = (1.f - 0.56f) * (4.f * volume_in * volume_in - 1.f) / 3.f + 0.56f;
+	}
+
+	return volume_out;
+}
+
+/* static */ F32 LLSpeakerVolumeStorage::transformToLegacyVolume(F32 volume_in)
+{
+	// Convert from linear-logarithmic [0.0..1.0] with 0.5 = 0dB
+	// to legacy characteristic composed of two square-curves
+	// that intersect at volume_in = 0.56, volume_out = 0.5
+
+	F32 volume_out = 0.f;
+	volume_in = llclamp(volume_in, 0.f, 1.0f);
+
+	if (volume_in <= 0.56f)
+	{
+		volume_out = sqrt(volume_in / (4.f * 0.56f));
+	}
+	else
+	{
+		volume_out = sqrt((3.f * (volume_in - 0.56f) / (1.f - 0.56f) + 1.f) / 4.f);
+	}
+
+	return volume_out;
 }
 
 void LLSpeakerVolumeStorage::load()
@@ -826,6 +892,8 @@ void LLSpeakerVolumeStorage::load()
 	// load per-resident voice volume information
 	std::string filename = gDirUtilp->getExpandedFilename(LL_PATH_PER_SL_ACCOUNT, SETTINGS_FILE_NAME);
 
+	LL_INFOS("Voice") << "Loading stored speaker volumes from: " << filename << LL_ENDL;
+
 	LLSD settings_llsd;
 	llifstream file;
 	file.open(filename);
@@ -837,7 +905,10 @@ void LLSpeakerVolumeStorage::load()
 	for (LLSD::map_const_iterator iter = settings_llsd.beginMap();
 		iter != settings_llsd.endMap(); ++iter)
 	{
-		mSpeakersData.insert(std::make_pair(LLUUID(iter->first), (F32)iter->second.asReal()));
+		// Maintain compatibility with 1.23 non-linear saved volume levels
+		F32 volume = transformFromLegacyVolume((F32)iter->second.asReal());
+
+		storeSpeakerVolume(LLUUID(iter->first), volume);
 	}
 }
 
@@ -852,9 +923,14 @@ void LLSpeakerVolumeStorage::save()
 		std::string filename = gDirUtilp->getExpandedFilename(LL_PATH_PER_SL_ACCOUNT, SETTINGS_FILE_NAME);
 		LLSD settings_llsd;
 
+		LL_INFOS("Voice") << "Saving stored speaker volumes to: " << filename << LL_ENDL;
+
 		for(speaker_data_map_t::const_iterator iter = mSpeakersData.begin(); iter != mSpeakersData.end(); ++iter)
 		{
-			settings_llsd[iter->first.asString()] = iter->second;
+			// Maintain compatibility with 1.23 non-linear saved volume levels
+			F32 volume = transformToLegacyVolume(iter->second);
+
+			settings_llsd[iter->first.asString()] = volume;
 		}
 
 		llofstream file;