www.pudn.com > MPlayer0623.zip > VolumeOutWave.cpp
// VolumeOutWave.cpp : Module interface implementation.
// Developer : Alex Chmut
// Created : 8/11/98
#include "StdAfx.h"
#include "VolumeOutWave.h"
/////////////////////////////////////////////////////////////////////////////
// Defines
#define BAD_DWORD (DWORD)-1
#define WND_CLASS_NAME "Wave Output Volume Msg Wnd Class"
#define WND_NAME "Wave Output Volume Msg Wnd"
/////////////////////////////////////////////////////////////////////////////
// Globals
PCVolumeOutWave g_pThis = NULL;
////////////////////////////////////////////////////////////
//{{{ Audio specific functions
#define AUDFREQ 22050 // Frequency
#define AUDCHANNELS 1 // Number of channels
#define AUDBITSMPL 16 // Number of bits per sample
inline
void SetDeviceType( WAVEFORMATEX* pwfe )
{
memset( pwfe, 0, sizeof(WAVEFORMATEX) );
WORD nBlockAlign = (AUDCHANNELS*AUDBITSMPL)/8;
DWORD nSamplesPerSec = AUDFREQ;
pwfe->wFormatTag = WAVE_FORMAT_PCM;
pwfe->nChannels = AUDCHANNELS;
pwfe->nBlockAlign = nBlockAlign;
pwfe->nSamplesPerSec = nSamplesPerSec;
pwfe->wBitsPerSample = AUDBITSMPL;
pwfe->nAvgBytesPerSec = nSamplesPerSec*nBlockAlign;
}
//}}} Audio specific functions
/////////////////////////////////////////////////////////////////////////////
// Implementation
//////////////
CVolumeOutWave::CVolumeOutWave()
: m_bOK(false),
m_bInitialized(false),
m_bAvailable(false),
m_uMixerID(0L),
m_dwMixerHandle(0L),
m_hWnd(NULL),
m_dwMinimalVolume(BAD_DWORD),
m_dwMaximalVolume(BAD_DWORD),
m_pfUserSink(NULL),
m_dwUserValue(0L)
{
if ( m_bOK = Init() )
{
g_pThis = this;
if ( !Initialize() )
{
Done();
g_pThis = NULL;
}
}
}
//////////////
CVolumeOutWave::~CVolumeOutWave()
{
if ( m_bOK )
Done();
g_pThis = NULL;
}
//////////////
bool CVolumeOutWave::Init()
{
if ( !mixerGetNumDevs() )
return false;
// Getting Mixer ID
HWAVEOUT hwaveOut;
MMRESULT mmResult;
WAVEFORMATEX WaveFmt;
SetDeviceType( &WaveFmt );
mmResult = waveOutOpen( &hwaveOut, WAVE_MAPPER, &WaveFmt, 0L, 0L, CALLBACK_NULL );
if ( mmResult != MMSYSERR_NOERROR )
{
TRACE(".WaveOutputVolume: FAILURE: Could not open WaveOut Mapper. mmResult=%d\n", mmResult );
return false;
} else {
mmResult = mixerGetID( (HMIXEROBJ)hwaveOut, &m_uMixerID, MIXER_OBJECTF_HWAVEOUT );
waveOutClose( hwaveOut );
if ( mmResult != MMSYSERR_NOERROR )
{
TRACE(".WaveOutputVolume: FAILURE: WaveOut Mapper in Mixer is not available. mmResult=%d\n", mmResult );
return false;
}
}
// Exposing Window to Mixer
WNDCLASSEX wcx;
memset( &wcx, 0, sizeof(WNDCLASSEX) );
wcx.cbSize = sizeof(WNDCLASSEX);
wcx.lpszClassName = WND_CLASS_NAME;
wcx.lpfnWndProc = (WNDPROC)MixerWndProc;
::RegisterClassEx(&wcx);
m_hWnd = CreateWindow( WND_CLASS_NAME,
WND_NAME,
WS_POPUP | WS_DISABLED,
0, 0, 0, 0,
NULL, NULL, NULL, NULL );
if ( !m_hWnd )
{
TRACE(".WaveOutputVolume: FAILURE: Could not create internal window.\n" );
return false;
}
::ShowWindow(m_hWnd, SW_HIDE);
mmResult = mixerOpen( (LPHMIXER)&m_dwMixerHandle, m_uMixerID, (DWORD)m_hWnd, 0L, CALLBACK_WINDOW );
if ( mmResult != MMSYSERR_NOERROR )
{
TRACE(".WaveOutputVolume: FAILURE: Could not open Mixer. mmResult=%d\n", mmResult );
::DestroyWindow( m_hWnd );
return false;
}
return true;
}
//////////////
void CVolumeOutWave::Done()
{
if ( mixerClose( (HMIXER)m_dwMixerHandle ) != MMSYSERR_NOERROR )
{
TRACE(".WaveOutputVolume: WARNING: Could not close Mixer.\n" );
}
::DestroyWindow( m_hWnd );
m_bInitialized = false;
m_bOK = false;
}
//////////////
void CVolumeOutWave::OnControlChanged( DWORD dwControlID )
{
if ( m_dwVolumeControlID == dwControlID )
{
DWORD dwVolume = GetCurrentVolume();
if ( (dwVolume!=BAD_DWORD) && (m_pfUserSink) )
{
(*m_pfUserSink)( dwVolume, m_dwUserValue );
}
}
}
//////////////
bool CVolumeOutWave::Initialize()
{
MMRESULT mmResult;
if ( !m_bOK )
return false;
TRACE(".WaveOutputVolume: Initializing for Source WaveOut Line ..\n" );
MIXERLINE MixerLine;
memset( &MixerLine, 0, sizeof(MIXERLINE) );
MixerLine.cbStruct = sizeof(MIXERLINE);
MixerLine.dwComponentType = MIXERLINE_COMPONENTTYPE_SRC_WAVEOUT;
mmResult = mixerGetLineInfo( (HMIXEROBJ)m_dwMixerHandle, &MixerLine, MIXER_GETLINEINFOF_COMPONENTTYPE );
if ( mmResult != MMSYSERR_NOERROR )
{
TRACE(".WaveOutputVolume: FAILURE: Could not get WaveOut Destionation Line for the WaveOut Source Line while initilaizing. mmResult=%d\n", mmResult );
return false;
}
MIXERCONTROL Control;
memset( &Control, 0, sizeof(MIXERCONTROL) );
Control.cbStruct = sizeof(MIXERCONTROL);
MIXERLINECONTROLS LineControls;
memset( &LineControls, 0, sizeof(MIXERLINECONTROLS) );
LineControls.cbStruct = sizeof(MIXERLINECONTROLS);
LineControls.dwControlType = MIXERCONTROL_CONTROLTYPE_VOLUME;
LineControls.dwLineID = MixerLine.dwLineID;
LineControls.cControls = 1;
LineControls.cbmxctrl = sizeof(MIXERCONTROL);
LineControls.pamxctrl = &Control;
mmResult = mixerGetLineControls( (HMIXEROBJ)m_dwMixerHandle, &LineControls, MIXER_GETLINECONTROLSF_ONEBYTYPE );
if ( mmResult == MMSYSERR_NOERROR )
{
if ( !(Control.fdwControl & MIXERCONTROL_CONTROLF_DISABLED) )
{
m_bAvailable = true;
TRACE(".WaveOutputVolume: \"%s\" Volume control for the WaveOut Source Line adopted.\n", Control.szShortName );
} else {
TRACE(".WaveOutputVolume: WARNING: The Volume Control is disabled.\n" );
}
} else {
TRACE(".WaveOutputVolume: WARNING: Could not get the WaveOut Source line Volume Control while initilaizing. mmResult=%d\n", mmResult );
}
m_nChannelCount = MixerLine.cChannels;
m_dwLineID = LineControls.dwLineID;
m_dwVolumeControlID = Control.dwControlID;
m_dwMinimalVolume = Control.Bounds.dwMinimum;
m_dwMaximalVolume = Control.Bounds.dwMaximum;
m_dwVolumeStep = Control.Metrics.cSteps;
m_bInitialized = true;
return true;
}
//////////////
void CVolumeOutWave::EnableLine( bool bEnable )
{
if ( !m_bInitialized )
return;
bool bAnyEnabled = false;
MMRESULT mmResult;
MIXERLINE lineDestination;
memset( &lineDestination, 0, sizeof(MIXERLINE) );
lineDestination.cbStruct = sizeof(MIXERLINE);
lineDestination.dwLineID = m_dwLineID;
mmResult = mixerGetLineInfo( (HMIXEROBJ)m_dwMixerHandle, &lineDestination, MIXER_GETLINEINFOF_LINEID );
if ( mmResult != MMSYSERR_NOERROR )
{
if ( bEnable )
{
TRACE(".WaveOutputVolume: FAILURE: Could not get the WaveOut Destination Line while enabling. mmResult=%d\n", mmResult );
} else {
TRACE(".WaveOutputVolume: FAILURE: Could not get the WaveOut Destination Line while disabling. mmResult=%d\n", mmResult );
}
return;
}
// Getting all line's controls
int nControlCount = lineDestination.cControls;
int nChannelCount = lineDestination.cChannels;
MIXERLINECONTROLS LineControls;
memset( &LineControls, 0, sizeof(MIXERLINECONTROLS) );
MIXERCONTROL* aControls = (MIXERCONTROL*)malloc( nControlCount * sizeof(MIXERCONTROL) );
if ( !aControls )
{
if ( bEnable )
{
TRACE(".WaveOutputVolume: FAILURE: Out of memory while enabling the line.\n" );
} else {
TRACE(".WaveOutputVolume: FAILURE: Out of memory while disabling the line.\n" );
}
return;
}
memset( &aControls[0], 0, sizeof(nControlCount * sizeof(MIXERCONTROL)) );
for ( int i = 0; i < nControlCount; i++ )
{
aControls[i].cbStruct = sizeof(MIXERCONTROL);
}
LineControls.cbStruct = sizeof(MIXERLINECONTROLS);
LineControls.dwLineID = lineDestination.dwLineID;
LineControls.cControls = nControlCount;
LineControls.cbmxctrl = sizeof(MIXERCONTROL);
LineControls.pamxctrl = &aControls[0];
mmResult = mixerGetLineControls( (HMIXEROBJ)m_dwMixerHandle, &LineControls, MIXER_GETLINECONTROLSF_ALL );
if ( mmResult == MMSYSERR_NOERROR )
{
for ( i = 0; i < nControlCount; i++ )
{
LONG lValue;
bool bReadyToSet = false;
switch (aControls[i].dwControlType)
{
case MIXERCONTROL_CONTROLTYPE_MUTE:
lValue = (BOOL)!bEnable;
bReadyToSet = true;
break;
case MIXERCONTROL_CONTROLTYPE_SINGLESELECT:
lValue = (BOOL)bEnable;
bReadyToSet = true;
break;
case MIXERCONTROL_CONTROLTYPE_MUX:
lValue = (BOOL)bEnable;
bReadyToSet = true;
break;
case MIXERCONTROL_CONTROLTYPE_MULTIPLESELECT:
lValue = (BOOL)bEnable;
bReadyToSet = true;
break;
case MIXERCONTROL_CONTROLTYPE_MIXER:
lValue = (BOOL)bEnable;
bReadyToSet = true;
break;
}
if ( bReadyToSet )
{
MIXERCONTROLDETAILS_BOOLEAN* aDetails = NULL;
int nMultipleItems = aControls[i].cMultipleItems;
int nChannels = nChannelCount;
// MIXERCONTROLDETAILS
MIXERCONTROLDETAILS ControlDetails;
memset( &ControlDetails, 0, sizeof(MIXERCONTROLDETAILS) );
ControlDetails.cbStruct = sizeof(MIXERCONTROLDETAILS);
ControlDetails.dwControlID = aControls[i].dwControlID;
if ( aControls[i].fdwControl & MIXERCONTROL_CONTROLF_UNIFORM )
{
nChannels = 1;
}
if ( aControls[i].fdwControl & MIXERCONTROL_CONTROLF_MULTIPLE )
{
nMultipleItems = aControls[i].cMultipleItems;
aDetails = (MIXERCONTROLDETAILS_BOOLEAN*)malloc(nMultipleItems*nChannels*sizeof(MIXERCONTROLDETAILS_BOOLEAN));
if ( !aDetails )
{
TRACE(".WaveOutputVolume: FAILURE: Out of memory while enabling the line.\n" );
continue;
}
for ( int nItem = 0; nItem < nMultipleItems; nItem++ )
{
for ( int nChannel = 0; nChannel < nChannels; nChannel++ )
{
aDetails[nItem+nChannel].fValue = lValue;
}
}
} else {
nMultipleItems = 0;
aDetails = (MIXERCONTROLDETAILS_BOOLEAN*)malloc(nChannels*sizeof(MIXERCONTROLDETAILS_BOOLEAN));
if ( !aDetails )
{
if ( bEnable )
{
TRACE(".WaveOutputVolume: FAILURE: Out of memory while enabling the line.\n" );
} else {
TRACE(".WaveOutputVolume: FAILURE: Out of memory while disabling the line.\n" );
}
continue;
}
for ( int nChannel = 0; nChannel < nChannels; nChannel++ )
{
aDetails[nChannel].fValue = (LONG)lValue;
}
}
ControlDetails.cChannels = nChannels;
ControlDetails.cMultipleItems = nMultipleItems;
ControlDetails.cbDetails = sizeof(MIXERCONTROLDETAILS_BOOLEAN);
ControlDetails.paDetails = &aDetails[0];
mmResult = mixerSetControlDetails( (HMIXEROBJ)m_dwMixerHandle, &ControlDetails, 0L );
if ( mmResult == MMSYSERR_NOERROR )
{
if ( bEnable )
{
TRACE(".WaveOutputVolume: Enabling Line: WaveOut Line control \"%s\"(0x%X) has been set to %d.\n", aControls[i].szShortName, aControls[i].dwControlType, lValue );
} else {
TRACE(".WaveOutputVolume: Disabling Line: WaveOut Line control \"%s\"(0x%X) has been set to %d.\n", aControls[i].szShortName, aControls[i].dwControlType, lValue );
}
bAnyEnabled = true;
}
free( aDetails );
}
}
} else {
if ( bEnable )
{
TRACE(".WaveOutputVolume: FAILURE: Could not get the line controls while enabling. mmResult=%d\n", mmResult );
} else {
TRACE(".WaveOutputVolume: FAILURE: Could not get the line controls while disabling. mmResult=%d\n", mmResult );
}
}
free( aControls );
if ( !bAnyEnabled )
{
if ( bEnable )
{
TRACE(".WaveOutputVolume: WARNING: No controls were found for enabling the line.\n" );
} else {
TRACE(".WaveOutputVolume: WARNING: No controls were found for disabling the line.\n" );
}
}
}
//////////////////////////////////////////////
// IVolume interface
//////////////
bool CVolumeOutWave::IsAvailable()
{
return m_bAvailable;
}
//////////////
void CVolumeOutWave::Enable()
{
EnableLine( true );
}
//////////////
void CVolumeOutWave::Disable()
{
EnableLine( false );
}
//////////////
DWORD CVolumeOutWave::GetVolumeMetric()
{
if ( !m_bAvailable )
return BAD_DWORD;
return m_dwVolumeStep;
}
//////////////
DWORD CVolumeOutWave::GetMinimalVolume()
{
if ( !m_bAvailable )
return BAD_DWORD;
return m_dwMinimalVolume;
}
//////////////
DWORD CVolumeOutWave::GetMaximalVolume()
{
if ( !m_bAvailable )
return BAD_DWORD;
return m_dwMaximalVolume;
}
//////////////
DWORD CVolumeOutWave::GetCurrentVolume()
{
if ( !m_bAvailable )
return BAD_DWORD;
MIXERCONTROLDETAILS_UNSIGNED* aDetails = (MIXERCONTROLDETAILS_UNSIGNED*)malloc(m_nChannelCount*sizeof(MIXERCONTROLDETAILS_UNSIGNED));
if ( !aDetails )
return BAD_DWORD;
MIXERCONTROLDETAILS ControlDetails;
memset( &ControlDetails, 0, sizeof(MIXERCONTROLDETAILS) );
ControlDetails.cbStruct = sizeof(MIXERCONTROLDETAILS);
ControlDetails.dwControlID = m_dwVolumeControlID;
ControlDetails.cChannels = m_nChannelCount;
ControlDetails.cMultipleItems = 0;
ControlDetails.cbDetails = sizeof(MIXERCONTROLDETAILS_UNSIGNED);
ControlDetails.paDetails = &aDetails[0];
MMRESULT mmResult = mixerGetControlDetails( (HMIXEROBJ)m_dwMixerHandle, &ControlDetails, MIXER_GETCONTROLDETAILSF_VALUE );
DWORD dw = aDetails[0].dwValue;
free( aDetails );
if ( mmResult != MMSYSERR_NOERROR )
{
TRACE(".WaveOutputVolume: FAILURE: Could not get volume. mmResult=%d\n", mmResult );
return BAD_DWORD;
}
return dw;
}
//////////////
void CVolumeOutWave::SetCurrentVolume( DWORD dwValue )
{
if ( !m_bAvailable || (dwValuem_dwMaximalVolume) )
return;
MIXERCONTROLDETAILS_UNSIGNED* aDetails = (MIXERCONTROLDETAILS_UNSIGNED*)malloc(m_nChannelCount*sizeof(MIXERCONTROLDETAILS_UNSIGNED));
if ( !aDetails )
return;
for ( int i = 0; i < m_nChannelCount; i++ )
{
aDetails[i].dwValue = dwValue;
}
MIXERCONTROLDETAILS ControlDetails;
memset( &ControlDetails, 0, sizeof(MIXERCONTROLDETAILS) );
ControlDetails.cbStruct = sizeof(MIXERCONTROLDETAILS);
ControlDetails.dwControlID = m_dwVolumeControlID;
ControlDetails.cChannels = m_nChannelCount;
ControlDetails.cMultipleItems = 0;
ControlDetails.cbDetails = sizeof(MIXERCONTROLDETAILS_UNSIGNED);
ControlDetails.paDetails = &aDetails[0];
MMRESULT mmResult = mixerSetControlDetails( (HMIXEROBJ)m_dwMixerHandle, &ControlDetails, MIXER_SETCONTROLDETAILSF_VALUE );
free( aDetails );
if ( mmResult != MMSYSERR_NOERROR )
{
TRACE(".WaveOutputVolume: FAILURE: Could not set volume(%d) mmResult=%d\n", dwValue, mmResult );
}
}
//////////////
void CVolumeOutWave::RegisterNotificationSink( PONMICVOULUMECHANGE pfUserSink, DWORD dwUserValue )
{
m_pfUserSink = pfUserSink;
m_dwUserValue = dwUserValue;
}
////////////////////////////////////////////////////////////////////////
LRESULT CALLBACK CVolumeOutWave::MixerWndProc( HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam )
{
if ( uMsg == MM_MIXM_CONTROL_CHANGE )
{
if ( g_pThis )
{
g_pThis->OnControlChanged( (DWORD)lParam );
}
}
return ::DefWindowProc( hwnd, uMsg, wParam, lParam);
}