rainmeter-studio/Plugins/PluginNowPlaying/PlayerITunes.cpp
Birunthan Mohanathas 7dd3bb1ed4 Installer: Now removes %TEMP%\Rainmeter-Cache on uninstall.
NowPlayingPlugin: Fixed crash on refresh when the plugin is used in multiple skins with different players.
2011-05-22 14:45:54 +00:00

602 lines
11 KiB
C++

/*
Copyright (C) 2011 Birunthan Mohanathas (www.poiru.net)
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "StdAfx.h"
#include "PlayerITunes.h"
extern CPlayer* g_iTunes;
/*
** CEventHandler
**
** Constructor.
**
*/
CPlayerITunes::CEventHandler::CEventHandler(CPlayerITunes* player) :
m_iTunes(player),
m_TypeInfo(),
m_RefCount()
{
ITypeLib* pITypeLib = NULL;
HRESULT hr = LoadRegTypeLib(LIBID_iTunesLib, 1, 5, 0x00, &pITypeLib);
// Get type information for the interface of the object.
hr = pITypeLib->GetTypeInfoOfGuid(DIID__IiTunesEvents, &m_TypeInfo);
pITypeLib->Release();
}
/*
** ~CEventHandler
**
** Destructor.
**
*/
CPlayerITunes::CEventHandler::~CEventHandler()
{
}
HRESULT STDMETHODCALLTYPE CPlayerITunes::CEventHandler::QueryInterface(REFIID iid, void** ppvObject)
{
if (iid == IID_IUnknown || iid == IID_IUnknown || iid == DIID__IiTunesEvents)
{
++m_RefCount;
*ppvObject = this;
return S_OK;
}
return E_NOINTERFACE;
}
ULONG STDMETHODCALLTYPE CPlayerITunes::CEventHandler::AddRef()
{
InterlockedIncrement(&m_RefCount);
return m_RefCount;
}
ULONG STDMETHODCALLTYPE CPlayerITunes::CEventHandler::Release()
{
InterlockedDecrement(&m_RefCount);
if (m_RefCount == 0)
{
delete this;
return 0;
}
return m_RefCount;
}
HRESULT STDMETHODCALLTYPE CPlayerITunes::CEventHandler::Invoke(DISPID dispidMember, REFIID, LCID, WORD, DISPPARAMS* dispParams, VARIANT*, EXCEPINFO*, UINT*)
{
switch (dispidMember)
{
case ITEventPlayerPlay:
m_iTunes->OnStateChange(true);
m_iTunes->OnTrackChange();
break;
case ITEventPlayerStop:
m_iTunes->OnStateChange(false);
break;
case ITEventPlayerPlayingTrackChanged:
m_iTunes->OnTrackChange();
break;
case ITEventSoundVolumeChanged:
m_iTunes->OnVolumeChange(dispParams->rgvarg[0].intVal);
break;
case ITEventAboutToPromptUserToQuit:
m_iTunes->m_UserQuitPrompt = true;
m_iTunes->Uninitialize();
break;
}
return S_OK;
}
/*
** CPlayerITunes
**
** Constructor.
**
*/
CPlayerITunes::CPlayerITunes() : CPlayer(),
m_Initialized(false),
m_UserQuitPrompt(false),
m_HasCoverMeasure(false),
m_Window(),
m_iTunes(),
m_iTunesEvent(),
m_ConnectionPoint(),
m_ConnectionCookie()
{
CoInitializeEx(NULL, COINIT_APARTMENTTHREADED);
}
/*
** ~CPlayerITunes
**
** Destructor.
**
*/
CPlayerITunes::~CPlayerITunes()
{
Uninitialize();
CoUninitialize();
}
/*
** AddInstance
**
** Called during initialization of each measure.
**
*/
void CPlayerITunes::AddInstance(MEASURETYPE type)
{
++m_InstanceCount;
if (type == MEASURE_COVER)
{
m_HasCoverMeasure = true;
}
}
/*
** RemoveInstance
**
** Called during destruction of each measure.
**
*/
void CPlayerITunes::RemoveInstance()
{
if (--m_InstanceCount == 0)
{
g_iTunes = NULL;
delete this;
}
}
/*
** Initialize
**
** Initialize iTunes COM interface and event handler.
**
*/
void CPlayerITunes::Initialize()
{
while (true)
{
HRESULT hr = CoCreateInstance(CLSID_iTunesApp, NULL, CLSCTX_LOCAL_SERVER, IID_IiTunes, (PVOID*)&m_iTunes);
if (hr == CO_E_SERVER_EXEC_FAILURE)
{
// This seems to happen if there is a modal dialog being shown in iTunes
// or some other delay has occurred. Retrying should do the trick.
continue;
}
else if (hr != S_OK)
{
// Failed to get hold of iTunes instance via COM
m_iTunes = NULL;
}
break;
}
if (m_iTunes)
{
m_Initialized = true;
// Set up event handler
IConnectionPointContainer* icpc;
m_iTunes->QueryInterface(IID_IConnectionPointContainer, (void **)&icpc);
icpc->FindConnectionPoint(DIID__IiTunesEvents, &m_ConnectionPoint);
icpc->Release();
m_iTunesEvent = new CEventHandler(this);
m_ConnectionPoint->Advise(m_iTunesEvent, &m_ConnectionCookie);
// Try getting track info and player state
ITPlayerState state;
if (SUCCEEDED(m_iTunes->get_PlayerState(&state)))
{
if (state == ITPlayerStateStopped)
{
// Determine if paused of stopped
long position;
m_iTunes->get_PlayerPosition(&position);
if (position != 0)
{
m_State = PLAYER_PAUSED;
}
}
else if (state == ITPlayerStatePlaying)
{
m_State = PLAYER_PLAYING;
}
if (m_State != PLAYER_STOPPED)
{
OnTrackChange();
}
long volume;
m_iTunes->get_SoundVolume(&volume);
m_Volume = (UINT)volume;
}
}
else
{
m_Initialized = false;
LSLog(LOG_ERROR, L"Rainmeter", L"NowPlayingPlugin: Failed to get hold of iTunes instance via COM.");
}
}
/*
** Uninitialize
**
** Close iTunes COM interface.
**
*/
void CPlayerITunes::Uninitialize()
{
if (m_Initialized)
{
m_Initialized = false;
if (m_iTunes)
{
m_iTunes->Release();
m_iTunesEvent->Release();
}
if (m_ConnectionPoint)
{
m_ConnectionPoint->Unadvise(m_ConnectionCookie);
m_ConnectionPoint->Release();
}
ClearInfo();
}
}
bool CPlayerITunes::CheckActive()
{
static DWORD oldTime = 0;
DWORD time = GetTickCount();
if (time - oldTime > 5000)
{
oldTime = time;
m_Window = FindWindow(L"iTunes", L"iTunes");
return m_Window ? true : false;
}
return false;
}
/*
** UpdateData
**
** Called during each update of the main measure.
**
*/
void CPlayerITunes::UpdateData()
{
if (m_Initialized)
{
if (m_TrackChanged)
{
ExecuteTrackChangeAction();
m_TrackChanged = false;
}
long position;
m_iTunes->get_PlayerPosition(&position);
m_Position = (UINT)position;
}
else
{
if (CheckActive())
{
if (!m_UserQuitPrompt)
{
Initialize();
}
}
else if (m_UserQuitPrompt)
{
m_UserQuitPrompt = false;
}
}
}
/*
** OnTrackChange
**
** Called by iTunes event handler on track change.
**
*/
void CPlayerITunes::OnTrackChange()
{
IITTrack* track;
HRESULT hr = m_iTunes->get_CurrentTrack(&track);
if (SUCCEEDED(hr))
{
CComBSTR tmpStr;
long tmpVal;
// Get metadata
track->get_Artist(&tmpStr);
tmpStr ? (m_Artist = tmpStr) : m_Artist.clear();
track->get_Name(&tmpStr);
tmpStr ? (m_Title = tmpStr) : m_Title.clear();
track->get_Album(&tmpStr);
tmpStr ? (m_Album = tmpStr) : m_Album.clear();
track->get_Duration(&tmpVal);
m_Duration = (UINT)tmpVal;
track->get_Rating(&tmpVal);
tmpVal /= 20L;
m_Rating = (UINT)tmpVal;
IITFileOrCDTrack* file;
hr = track->QueryInterface(&file);
if (SUCCEEDED(hr))
{
file->get_Location(&tmpStr);
file->Release();
if (tmpStr && wcscmp(tmpStr, m_FilePath.c_str()) != 0)
{
m_FilePath = tmpStr;
m_TrackChanged = true;
if (m_HasCoverMeasure)
{
if (!GetCachedArt())
{
// Art not in cache, check for embedded art
IITArtworkCollection* artworkCollection;
hr = track->get_Artwork(&artworkCollection);
if (SUCCEEDED(hr))
{
long count;
artworkCollection->get_Count(&count);
if (count > 0)
{
IITArtwork* artwork;
hr = artworkCollection->get_Item(1, &artwork);
if (SUCCEEDED(hr))
{
tmpStr = m_CoverPath.c_str();
hr = artwork->SaveArtworkToFile(tmpStr);
if (FAILED(hr))
{
m_CoverPath.clear();
}
artwork->Release();
}
}
else
{
m_CoverPath.clear();
}
artworkCollection->Release();
}
else
{
m_CoverPath.clear();
}
}
}
}
}
track->Release();
}
else
{
ClearInfo();
}
}
/*
** OnStateChange
**
** Called by iTunes event handler on player state change.
**
*/
void CPlayerITunes::OnStateChange(bool playing)
{
if (playing)
{
m_State = PLAYER_PLAYING;
}
else
{
// Guess if paused or stopped from track time
m_State = (m_Position == 0) ? PLAYER_STOPPED : PLAYER_PAUSED;
}
}
/*
** OnVolumeChange
**
** Called by iTunes event handler on volume change.
**
*/
void CPlayerITunes::OnVolumeChange(int volume)
{
m_Volume = volume;
}
/*
** PlayPause
**
** Handles the PlayPause bang.
**
*/
void CPlayerITunes::PlayPause()
{
if (m_Initialized)
{
m_iTunes->PlayPause();
}
}
/*
** Stop
**
** Handles the Stop bang.
**
*/
void CPlayerITunes::Stop()
{
if (m_Initialized)
{
m_iTunes->Stop();
}
}
/*
** Next
**
** Handles the Next bang.
**
*/
void CPlayerITunes::Next()
{
if (m_Initialized)
{
m_iTunes->NextTrack();
}
}
/*
** Previous
**
** Handles the Previous bang.
**
*/
void CPlayerITunes::Previous()
{
if (m_Initialized)
{
m_iTunes->PreviousTrack();
}
}
/*
** SetRating
**
** Handles the SetRating bang.
**
*/
void CPlayerITunes::SetRating(int rating)
{
if (m_Initialized)
{
rating *= 20;
IITTrack* track;
HRESULT hr = m_iTunes->get_CurrentTrack(&track);
if (SUCCEEDED(hr))
{
track->put_Rating((long)rating);
track->Release();
}
}
}
/*
** SetVolume
**
** Handles the SetVolume bang.
**
*/
void CPlayerITunes::SetVolume(int volume)
{
if (m_Initialized)
{
m_iTunes->put_SoundVolume((long)volume);
}
}
/*
** ChangeVolume
**
** Handles the ChangeVolume bang.
**
*/
void CPlayerITunes::ChangeVolume(int volume)
{
if (m_Initialized)
{
int newVolume = m_Volume;
newVolume += volume;
m_iTunes->put_SoundVolume(newVolume);
}
}
/*
** ClosePlayer
**
** Handles the ClosePlayer bang.
**
*/
void CPlayerITunes::ClosePlayer()
{
if (m_Initialized)
{
m_Initialized = false;
m_iTunes->Quit();
ClearInfo();
}
}
/*
** OpenPlayer
**
** Handles the OpenPlayer bang.
**
*/
void CPlayerITunes::OpenPlayer()
{
ShellExecute(NULL, L"open", m_PlayerPath.empty() ? L"iTunes.exe" : m_PlayerPath.c_str(), NULL, NULL, SW_SHOW);
}
/*
** TogglePlayer
**
** Handles the TogglePlayer bang.
**
*/
void CPlayerITunes::TogglePlayer()
{
m_Initialized ? ClosePlayer() : OpenPlayer();
}