[asherkin]

This plugin hooks the broadcast of voice chat through the server, decompresses it with Valve's audio codecs, passes it onto other plugins that have registered a listener and then re-compresses the data.

WARNING: For TF2 and other games using the Steam audio system, you need to set the sv_use_steam_voice convar to 0 if you want decompression to work.

The interface is quite simple:

#define VOICE_INTERFACE "VOICE_INTERFACE_002"

class IVoiceListener
{
public:
	// In raw mode, nSamples = bytes;
	virtual void OnVoiceBroadcast(int client, char *pVoiceData, int *nSamples)
	{
	}
};

class IVoice
{
public:
	virtual void AddVoiceListener(IVoiceListener *pVoiceListener) = 0;
	virtual void RemoveVoiceListener(IVoiceListener *pVoiceListener) = 0;
	
	virtual void AddRawVoiceListener(IVoiceListener *pVoiceListener) = 0;
	virtual void RemoveRawVoiceListener(IVoiceListener *pVoiceListener) = 0;
};

and can be acquired with the following code:

IVoice *pVoice = (IVoice *)g_SMAPI->MetaFactory(VOICE_INTERFACE, NULL, NULL);

I'm fed up with typing, so have a load of files:

• The actual plugin: voicehook_mm.dll voicehook_mm.so
• Source for a SourceMod extension implementing a simple recording command: voicerecord_ext.zip
• A SourceMod extensions that has a simple forward for SourceMod plugins:
  • Source code: voiceannounce_ext.zip
  • Compliled copy for plugin devs to play with: voiceannounce.ext.2.ep2v.dll voiceannounce.ext.2.ep2v.so
  • Simple test plugin: voice.sp

You'll need to copy vaudio_speex.dll from Steam\steamapps\<account name>\<Source 2009 using game name>\bin\ (Linux users can get the Linux one from here) and copy it to orangebox\bin in your server install.

TO-DO List:

• Further reverse engineer the broadcast function, if it can be completely replaced we'll be able to avoid the terrible voice management functions.
• Allow interface implementors to block the function.
• Implement a method to get IServer, so we can broadcast arbitrary audio to clients.