From d44af635112d391cba2b9a488ea4963c0922c531 Mon Sep 17 00:00:00 2001
From: Daniel Prows <dlprows@verisk.com>
Date: Mon, 21 Aug 2023 10:56:03 -0600
Subject: [PATCH] Fixing an issue where some devices (usb) don't support
 channel 0, so i switched to virtual main volume

---
 src/volume/coreAudio.go | 25 ++++++++++++++++++++-----
 1 file changed, 20 insertions(+), 5 deletions(-)

diff --git a/src/volume/coreAudio.go b/src/volume/coreAudio.go
index a327259..e98cc7c 100644
--- a/src/volume/coreAudio.go
+++ b/src/volume/coreAudio.go
@@ -2,8 +2,9 @@ package volume
 
 /*
  #cgo CFLAGS: -x objective-c
- #cgo LDFLAGS: -framework CoreAudio
+ #cgo LDFLAGS: -framework CoreAudio -framework AudioToolbox
  #include <CoreAudio/CoreAudio.h>
+ #include <AudioToolbox/AudioToolbox.h>
 */
 import "C"
 import (
@@ -43,10 +44,17 @@ func GetDefaultOutputDevice() (AudioObjectID, OSStatus) {
 func GetVolume(objectID AudioObjectID) (float32, OSStatus) {
 
 	properties := C.AudioObjectPropertyAddress{
-		C.kAudioDevicePropertyVolumeScalar,
+		C.kAudioHardwareServiceDeviceProperty_VirtualMainVolume,
 		C.kAudioDevicePropertyScopeOutput,
-		0, //main channel
+		C.kAudioObjectPropertyElementMain,
 	}
+	/*
+		properties := C.AudioObjectPropertyAddress{
+			C.kAudioDevicePropertyVolumeScalar,
+			C.kAudioDevicePropertyScopeOutput,
+			0, //main channel
+		}
+	*/
 
 	var data C.Float32
 	dataSize := C.UInt32(unsafe.Sizeof(data))
@@ -66,10 +74,17 @@ func GetVolume(objectID AudioObjectID) (float32, OSStatus) {
 func SetVolume(objectID AudioObjectID, volume float32) OSStatus {
 
 	properties := C.AudioObjectPropertyAddress{
-		C.kAudioDevicePropertyVolumeScalar,
+		C.kAudioHardwareServiceDeviceProperty_VirtualMainVolume,
 		C.kAudioDevicePropertyScopeOutput,
-		0, //main channel
+		C.kAudioObjectPropertyElementMain,
 	}
+	/*
+		properties := C.AudioObjectPropertyAddress{
+			C.kAudioDevicePropertyVolumeScalar,
+			C.kAudioDevicePropertyScopeOutput,
+			0, //main channel
+		}
+	*/
 
 	data := C.Float32(volume)