From 206919735bafe22bc41619879a6a1f6332b40d15 Mon Sep 17 00:00:00 2001
From: roblabla <unfiltered@roblab.la>
Date: Sun, 24 Nov 2024 23:22:49 +0100
Subject: [PATCH] Implement MidiOutput::FadeOutSetVolume

---
 config/implemented.csv |  1 +
 config/stubbed.csv     |  1 -
 src/MidiOutput.cpp     | 32 ++++++++++++++++++++++++++++++++
 3 files changed, 33 insertions(+), 1 deletion(-)

diff --git a/config/implemented.csv b/config/implemented.csv
index bd69bf6f..93ea3057 100644
--- a/config/implemented.csv
+++ b/config/implemented.csv
@@ -258,6 +258,7 @@ th06::MidiOutput::ReleaseFileData
 th06::MidiOutput::StopPlayback
 th06::MidiOutput::SetFadeOut
 th06::MidiOutput::ProcessMsg
+th06::MidiOutput::FadeOutSetVolume
 th06::MidiOutput::Ntohs
 th06::MidiOutput::SkipVariableLength
 th06::MidiOutput::~MidiOutput
diff --git a/config/stubbed.csv b/config/stubbed.csv
index f554223e..13fc2e64 100644
--- a/config/stubbed.csv
+++ b/config/stubbed.csv
@@ -1,3 +1,2 @@
 th06::AnmManager::DrawEndingRect
 th06::MainMenu::SelectRelated
-th06::MidiOutput::FadeOutSetVolume
diff --git a/src/MidiOutput.cpp b/src/MidiOutput.cpp
index f5236a83..6f0ef057 100644
--- a/src/MidiOutput.cpp
+++ b/src/MidiOutput.cpp
@@ -716,4 +716,36 @@ void MidiOutput::ProcessMsg(MidiTrack *track)
     return;
 }
 
+#pragma var_order(arg1, idx, volumeByte, midiStatus, volumeClamped)
+void MidiOutput::FadeOutSetVolume(i32 volume)
+{
+    i32 volumeClamped;
+    u32 volumeByte;
+    i32 idx;
+    i32 arg1;
+    u32 midiStatus;
+
+    if (this->unk2d4 != 0)
+    {
+        return;
+    }
+    arg1 = 7;
+    for (idx = 0; idx < ARRAY_SIZE_SIGNED(this->channels); idx += 1)
+    {
+        midiStatus = (idx + 0xb0) & 0xff;
+        volumeClamped = (i32)(this->channels[idx].channelVolume * this->fadeOutVolumeMultiplier) + volume;
+        if (volumeClamped < 0)
+        {
+            volumeClamped = 0;
+        }
+        else if (volumeClamped > 127)
+        {
+            volumeClamped = 127;
+        }
+        volumeByte = volumeClamped & 0xff;
+        this->midiOutDev.SendShortMsg(midiStatus, arg1, volumeByte);
+    }
+    return;
+}
+
 }; // namespace th06