audout: Implement and fix some calls (#1725)

* audout: Implement GetAudioOutBufferCount, GetAudioOutPlayedSampleCount and FlushAudioOutBuffers

This PR implement audout service calls:
- GetAudioOutBufferCount
- GetAudioOutPlayedSampleCount
- FlushAudioOutBuffers

The RE calls just give some hints about no extra checks.
Since we use a totally different implementation because of our backend, I can't do something better for now.

SetAudioOutVolume and GetAudioOutVolume are fixed too by set/get the volume of the current opened track, previous implementation was wrong.

This fix #1133, fix #1258 and fix #1519.

Thanks to @jduncanator for this help during the implementation and all his precious advices.

* Fix some debug leftovers

* Address jD feedback

1 files changed, 8 insertions, 2 deletions

diff --git a/Ryujinx.Audio/IAalOutput.cs b/Ryujinx.Audio/IAalOutput.cs
index 821c1ffb..056b4665 100644
--- a/Ryujinx.Audio/IAalOutput.cs
+++ b/Ryujinx.Audio/IAalOutput.cs
@@ -45,9 +45,15 @@ namespace Ryujinx.Audio
 
         void Stop(int trackId);
 
-        float GetVolume();
+        uint GetBufferCount(int trackId);
 
-        void SetVolume(float volume);
+        ulong GetPlayedSampleCount(int trackId);
+
+        bool FlushBuffers(int trackId);
+
+        float GetVolume(int trackId);
+
+        void SetVolume(int trackId, float volume);
 
         PlaybackState GetState(int trackId);
     }