mirror of
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504 lines
14 KiB
C++
504 lines
14 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose:
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//
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// $NoKeywords: $
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//=============================================================================//
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#include "audio_pch.h"
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#include "voice_mixer_controls.h"
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// memdbgon must be the last include file in a .cpp file!!!
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#include "tier0/memdbgon.h"
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// NOTE: Vista deprecated these APIs
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// Under vista these settings are per-session (not persistent)
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// The correct method is to use the AudioEndpoint COM objects to manage controls like this
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// The interface is not 1:1 so for now we'll just back the state with convars and reapply it
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// on init of the mixer controls. In the future when XP is no longer the majority of our user base
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// we should revisit this and move to the new API.
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// http://msdn.microsoft.com/en-us/library/aa964574(VS.85).aspx
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class CMixerControls : public IMixerControls
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{
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public:
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CMixerControls();
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virtual ~CMixerControls();
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virtual bool GetValue_Float(Control iControl, float &value);
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virtual bool SetValue_Float(Control iControl, float value);
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virtual bool SelectMicrophoneForWaveInput();
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private:
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bool Init();
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void Term();
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void Clear();
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bool GetControlOption_Bool(DWORD dwControlID, DWORD cMultipleItems, bool &bValue);
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bool SetControlOption_Bool(DWORD dwControlID, DWORD cMultipleItems, const bool bValue);
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bool GetControlOption_Unsigned(DWORD dwControlID, DWORD cMultipleItems, DWORD &value);
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bool SetControlOption_Unsigned(DWORD dwControlID, DWORD cMultipleItems, const DWORD value);
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bool GetLineControls( DWORD dwLineID, MIXERCONTROL *controls, DWORD nControls );
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void FindMicSelectControl( DWORD dwLineID, DWORD nControls );
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private:
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HMIXER m_hMixer;
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class ControlInfo
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{
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public:
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DWORD m_dwControlID;
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DWORD m_cMultipleItems;
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bool m_bFound;
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};
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DWORD m_dwMicSelectControlID;
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DWORD m_dwMicSelectMultipleItems;
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DWORD m_dwMicSelectControlType;
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DWORD m_dwMicSelectIndex;
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// Info about the controls we found.
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ControlInfo m_ControlInfos[NumControls];
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};
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CMixerControls::CMixerControls()
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{
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m_dwMicSelectControlID = 0xFFFFFFFF;
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Clear();
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Init();
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}
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CMixerControls::~CMixerControls()
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{
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Term();
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}
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bool CMixerControls::Init()
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{
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Term();
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MMRESULT mmr;
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bool bFoundMixer = false;
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bool bFoundConnectionWithMicVolume = false;
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CUtlVectorFixedGrowable<MIXERCONTROL, 64> controls;
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// Iterate over all the devices
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// This is done in reverse so the 0th device is our fallback if none of them had the correct MicVolume control
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for ( int iDevice = static_cast<int>( mixerGetNumDevs() ) - 1; iDevice >= 0 && !bFoundConnectionWithMicVolume; --iDevice )
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{
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// Open the mixer.
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mmr = mixerOpen(&m_hMixer, (DWORD)iDevice, 0, 0, 0 );
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if(mmr != MMSYSERR_NOERROR)
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{
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continue;
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}
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// Iterate over each destination line, looking for Play Controls.
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MIXERCAPS mxcaps;
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mmr = mixerGetDevCaps((UINT)m_hMixer, &mxcaps, sizeof(mxcaps));
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if(mmr != MMSYSERR_NOERROR)
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{
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continue;
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}
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bFoundMixer = true;
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for(UINT u = 0; u < mxcaps.cDestinations; u++)
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{
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MIXERLINE recordLine;
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recordLine.cbStruct = sizeof(recordLine);
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recordLine.dwDestination = u;
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mmr = mixerGetLineInfo((HMIXEROBJ)m_hMixer, &recordLine, MIXER_GETLINEINFOF_DESTINATION);
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if(mmr != MMSYSERR_NOERROR)
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continue;
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// Go through the controls that aren't attached to a specific src connection.
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// We're looking for the checkbox that enables the user's microphone for waveIn.
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if( recordLine.dwComponentType == MIXERLINE_COMPONENTTYPE_DST_WAVEIN )
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{
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FindMicSelectControl( recordLine.dwLineID, recordLine.cControls );
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}
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// Now iterate over each connection (things like wave out, microphone, speaker, CD audio), looking for Microphone.
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UINT cConnections = (UINT)recordLine.cConnections;
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for (UINT v = 0; v < cConnections; v++)
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{
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MIXERLINE micLine;
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micLine.cbStruct = sizeof(micLine);
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micLine.dwDestination = u;
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micLine.dwSource = v;
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mmr = mixerGetLineInfo((HMIXEROBJ)m_hMixer, &micLine, MIXER_GETLINEINFOF_SOURCE);
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if(mmr != MMSYSERR_NOERROR)
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continue;
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// Now look at all the controls (volume, mute, boost, etc).
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controls.RemoveAll();
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controls.SetCount(micLine.cControls);
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if( !GetLineControls( micLine.dwLineID, controls.Base(), micLine.cControls ) )
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continue;
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for(UINT i=0; i < micLine.cControls; i++)
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{
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MIXERCONTROL *pControl = &controls[i];
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if(micLine.dwComponentType == MIXERLINE_COMPONENTTYPE_SRC_MICROPHONE)
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{
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if( pControl->dwControlType == MIXERCONTROL_CONTROLTYPE_ONOFF &&
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(
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strstr(pControl->szShortName, "Gain") ||
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strstr(pControl->szShortName, "Boos") ||
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strstr(pControl->szShortName, "+20d")
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)
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)
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{
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// This is the (record) boost option.
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m_ControlInfos[MicBoost].m_bFound = true;
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m_ControlInfos[MicBoost].m_dwControlID = pControl->dwControlID;
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m_ControlInfos[MicBoost].m_cMultipleItems = pControl->cMultipleItems;
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}
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if(recordLine.dwComponentType == MIXERLINE_COMPONENTTYPE_DST_SPEAKERS &&
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pControl->dwControlType == MIXERCONTROL_CONTROLTYPE_MUTE)
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{
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// This is the mute button.
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m_ControlInfos[MicMute].m_bFound = true;
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m_ControlInfos[MicMute].m_dwControlID = pControl->dwControlID;
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m_ControlInfos[MicMute].m_cMultipleItems = pControl->cMultipleItems;
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}
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if(recordLine.dwComponentType == MIXERLINE_COMPONENTTYPE_DST_WAVEIN &&
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pControl->dwControlType == MIXERCONTROL_CONTROLTYPE_VOLUME)
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{
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// This is the mic input level.
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m_ControlInfos[MicVolume].m_bFound = true;
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m_ControlInfos[MicVolume].m_dwControlID = pControl->dwControlID;
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m_ControlInfos[MicVolume].m_cMultipleItems = pControl->cMultipleItems;
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// We found a good recording device and can stop looking throught the available devices
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bFoundConnectionWithMicVolume = true;
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}
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}
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}
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}
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}
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}
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if ( !bFoundMixer )
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{
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// Failed to find any mixer (MixVolume or not)
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Term();
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return false;
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}
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return true;
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}
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void CMixerControls::Term()
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{
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if(m_hMixer)
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{
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mixerClose(m_hMixer);
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m_hMixer = 0;
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}
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Clear();
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}
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bool CMixerControls::GetValue_Float( Control iControl, float &flValue )
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{
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if( iControl < 0 || iControl >= NumControls || !m_ControlInfos[iControl].m_bFound )
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return false;
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if(iControl == MicBoost || iControl == MicMute)
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{
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bool bValue = false;
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bool ret = GetControlOption_Bool(m_ControlInfos[iControl].m_dwControlID, m_ControlInfos[iControl].m_cMultipleItems, bValue);
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flValue = (float)bValue;
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return ret;
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}
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else if(iControl == MicVolume)
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{
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DWORD dwValue = (DWORD)0;
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if(GetControlOption_Unsigned(m_ControlInfos[iControl].m_dwControlID, m_ControlInfos[iControl].m_cMultipleItems, dwValue))
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{
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flValue = dwValue / 65535.0f;
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return true;
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}
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}
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return false;
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}
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bool CMixerControls::SetValue_Float(Control iControl, float flValue )
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{
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if(iControl < 0 || iControl >= NumControls || !m_ControlInfos[iControl].m_bFound)
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return false;
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if(iControl == MicBoost || iControl == MicMute)
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{
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bool bValue = !!flValue;
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return SetControlOption_Bool(m_ControlInfos[iControl].m_dwControlID, m_ControlInfos[iControl].m_cMultipleItems, bValue);
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}
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else if(iControl == MicVolume)
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{
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DWORD dwValue = (DWORD)(flValue * 65535.0f);
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return SetControlOption_Unsigned(m_ControlInfos[iControl].m_dwControlID, m_ControlInfos[iControl].m_cMultipleItems, dwValue);
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}
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return false;
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}
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bool CMixerControls::SelectMicrophoneForWaveInput()
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{
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if( m_dwMicSelectControlID == 0xFFFFFFFF )
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return false;
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MIXERCONTROLDETAILS_BOOLEAN *pmxcdSelectValue =
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(MIXERCONTROLDETAILS_BOOLEAN*)_alloca( sizeof(MIXERCONTROLDETAILS_BOOLEAN) * m_dwMicSelectMultipleItems );
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MIXERCONTROLDETAILS mxcd;
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mxcd.cbStruct = sizeof(MIXERCONTROLDETAILS);
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mxcd.dwControlID = m_dwMicSelectControlID;
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mxcd.cChannels = 1;
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mxcd.cMultipleItems = m_dwMicSelectMultipleItems;
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mxcd.cbDetails = sizeof(MIXERCONTROLDETAILS_BOOLEAN);
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mxcd.paDetails = pmxcdSelectValue;
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if (mixerGetControlDetails(reinterpret_cast<HMIXEROBJ>(m_hMixer),
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&mxcd,
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MIXER_OBJECTF_HMIXER |
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MIXER_GETCONTROLDETAILSF_VALUE)
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== MMSYSERR_NOERROR)
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{
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// MUX restricts the line selection to one source line at a time.
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if( m_dwMicSelectControlType == MIXERCONTROL_CONTROLTYPE_MUX )
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{
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ZeroMemory(pmxcdSelectValue,
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m_dwMicSelectMultipleItems * sizeof(MIXERCONTROLDETAILS_BOOLEAN));
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}
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// set the Microphone value
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pmxcdSelectValue[m_dwMicSelectIndex].fValue = 1;
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mxcd.cbStruct = sizeof(MIXERCONTROLDETAILS);
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mxcd.dwControlID = m_dwMicSelectControlID;
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mxcd.cChannels = 1;
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mxcd.cMultipleItems = m_dwMicSelectMultipleItems;
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mxcd.cbDetails = sizeof(MIXERCONTROLDETAILS_BOOLEAN);
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mxcd.paDetails = pmxcdSelectValue;
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if (mixerSetControlDetails(reinterpret_cast<HMIXEROBJ>(m_hMixer),
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&mxcd,
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MIXER_OBJECTF_HMIXER |
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MIXER_SETCONTROLDETAILSF_VALUE) == MMSYSERR_NOERROR)
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{
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return true;
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}
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}
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return false;
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}
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void CMixerControls::Clear()
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{
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m_hMixer = 0;
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memset(m_ControlInfos, 0, sizeof(m_ControlInfos));
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}
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bool CMixerControls::GetControlOption_Bool(DWORD dwControlID, DWORD cMultipleItems, bool &bValue)
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{
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MIXERCONTROLDETAILS details;
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MIXERCONTROLDETAILS_BOOLEAN controlValue;
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details.cbStruct = sizeof(details);
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details.dwControlID = dwControlID;
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details.cChannels = 1; // uniform..
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details.cMultipleItems = cMultipleItems;
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details.cbDetails = sizeof(MIXERCONTROLDETAILS_BOOLEAN);
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details.paDetails = &controlValue;
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MMRESULT mmr = mixerGetControlDetails((HMIXEROBJ)m_hMixer, &details, 0L);
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if(mmr == MMSYSERR_NOERROR)
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{
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bValue = !!controlValue.fValue;
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return true;
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}
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else
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{
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return false;
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}
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}
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bool CMixerControls::SetControlOption_Bool(DWORD dwControlID, DWORD cMultipleItems, const bool bValue)
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{
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MIXERCONTROLDETAILS details;
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MIXERCONTROLDETAILS_BOOLEAN controlValue;
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details.cbStruct = sizeof(details);
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details.dwControlID = dwControlID;
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details.cChannels = 1; // uniform..
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details.cMultipleItems = cMultipleItems;
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details.cbDetails = sizeof(MIXERCONTROLDETAILS_BOOLEAN);
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details.paDetails = &controlValue;
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controlValue.fValue = bValue;
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MMRESULT mmr = mixerSetControlDetails((HMIXEROBJ)m_hMixer, &details, 0L);
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return mmr == MMSYSERR_NOERROR;
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}
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bool CMixerControls::GetControlOption_Unsigned(DWORD dwControlID, DWORD cMultipleItems, DWORD &value)
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{
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MIXERCONTROLDETAILS details;
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MIXERCONTROLDETAILS_UNSIGNED controlValue;
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details.cbStruct = sizeof(details);
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details.dwControlID = dwControlID;
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details.cChannels = 1; // uniform..
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details.cMultipleItems = cMultipleItems;
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details.cbDetails = sizeof(MIXERCONTROLDETAILS_UNSIGNED);
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details.paDetails = &controlValue;
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MMRESULT mmr = mixerGetControlDetails((HMIXEROBJ)m_hMixer, &details, 0L);
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if(mmr == MMSYSERR_NOERROR)
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{
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value = controlValue.dwValue;
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return true;
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}
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else
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{
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return false;
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}
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}
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bool CMixerControls::SetControlOption_Unsigned(DWORD dwControlID, DWORD cMultipleItems, const DWORD value)
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{
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MIXERCONTROLDETAILS details;
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MIXERCONTROLDETAILS_UNSIGNED controlValue;
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details.cbStruct = sizeof(details);
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details.dwControlID = dwControlID;
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details.cChannels = 1; // uniform..
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details.cMultipleItems = cMultipleItems;
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details.cbDetails = sizeof(MIXERCONTROLDETAILS_UNSIGNED);
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details.paDetails = &controlValue;
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controlValue.dwValue = value;
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MMRESULT mmr = mixerSetControlDetails((HMIXEROBJ)m_hMixer, &details, 0L);
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return mmr == MMSYSERR_NOERROR;
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}
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bool CMixerControls::GetLineControls( DWORD dwLineID, MIXERCONTROL *controls, DWORD nControls )
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{
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MIXERLINECONTROLS mxlc;
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mxlc.cbStruct = sizeof(mxlc);
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mxlc.dwLineID = dwLineID;
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mxlc.cControls = nControls;
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mxlc.cbmxctrl = sizeof(MIXERCONTROL);
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mxlc.pamxctrl = controls;
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MMRESULT mmr = mixerGetLineControls((HMIXEROBJ)m_hMixer, &mxlc, MIXER_GETLINECONTROLSF_ALL);
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return mmr == MMSYSERR_NOERROR;
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}
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void CMixerControls::FindMicSelectControl( DWORD dwLineID, DWORD nControls )
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{
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m_dwMicSelectControlID = 0xFFFFFFFF;
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MIXERCONTROL *recControls = (MIXERCONTROL*)_alloca( sizeof(MIXERCONTROL) * nControls );
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if( !GetLineControls( dwLineID, recControls, nControls ) )
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return;
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for( UINT iRecControl=0; iRecControl < nControls; iRecControl++ )
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{
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if( recControls[iRecControl].dwControlType == MIXERCONTROL_CONTROLTYPE_MIXER ||
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recControls[iRecControl].dwControlType == MIXERCONTROL_CONTROLTYPE_MUX )
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{
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m_dwMicSelectControlID = recControls[iRecControl].dwControlID;
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m_dwMicSelectControlType = recControls[iRecControl].dwControlType;
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m_dwMicSelectMultipleItems = recControls[iRecControl].cMultipleItems;
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m_dwMicSelectIndex = iRecControl;
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// Get the index of the one that selects the mic.
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MIXERCONTROLDETAILS_LISTTEXT *pmxcdSelectText =
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(MIXERCONTROLDETAILS_LISTTEXT*)_alloca( sizeof(MIXERCONTROLDETAILS_LISTTEXT) * m_dwMicSelectMultipleItems );
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MIXERCONTROLDETAILS mxcd;
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mxcd.cbStruct = sizeof(MIXERCONTROLDETAILS);
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mxcd.dwControlID = m_dwMicSelectControlID;
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mxcd.cChannels = 1;
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mxcd.cMultipleItems = m_dwMicSelectMultipleItems;
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mxcd.cbDetails = sizeof(MIXERCONTROLDETAILS_LISTTEXT);
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mxcd.paDetails = pmxcdSelectText;
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if (mixerGetControlDetails((HMIXEROBJ)m_hMixer,
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&mxcd,
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MIXER_OBJECTF_HMIXER |
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MIXER_GETCONTROLDETAILSF_LISTTEXT) == MMSYSERR_NOERROR)
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{
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// determine which controls the Microphone source line
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for (DWORD dwi = 0; dwi < m_dwMicSelectMultipleItems; dwi++)
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{
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// get the line information
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MIXERLINE mxl;
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mxl.cbStruct = sizeof(MIXERLINE);
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mxl.dwLineID = pmxcdSelectText[dwi].dwParam1;
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if (mixerGetLineInfo((HMIXEROBJ)m_hMixer,
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&mxl,
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MIXER_OBJECTF_HMIXER |
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MIXER_GETLINEINFOF_LINEID) == MMSYSERR_NOERROR &&
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mxl.dwComponentType == MIXERLINE_COMPONENTTYPE_SRC_MICROPHONE)
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{
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// found, dwi is the index.
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m_dwMicSelectIndex = dwi;
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break;
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}
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}
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}
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break;
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}
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}
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}
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IMixerControls* g_pMixerControls = NULL;
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void InitMixerControls()
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{
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if ( !g_pMixerControls )
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{
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g_pMixerControls = new CMixerControls;
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}
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}
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void ShutdownMixerControls()
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{
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delete g_pMixerControls;
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g_pMixerControls = NULL;
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}
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