rainmeter-studio/Plugins/PluginNowPlaying/PlayerCAD.cpp

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/*
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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "StdAfx.h"
#include "PlayerCAD.h"
#include "CAD/cad_sdk.h"
CPlayer* CPlayerCAD::c_Player = NULL;
extern std::wstring g_SettingsFile;
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extern HINSTANCE g_Instance;
// This player emulates the CD Art Display IPC interface, which is supported by
// MusicBee, VLC (with libcad plugin), and possibly others.
/*
** Constructor.
**
*/
CPlayerCAD::CPlayerCAD() : CPlayer(),
m_Window(),
m_PlayerWindow(),
m_ExtendedAPI(false),
m_Open(false)
{
Initialize();
}
/*
** Constructor.
**
*/
CPlayerCAD::~CPlayerCAD()
{
c_Player = NULL;
Uninitialize();
}
/*
** Creates a shared class object.
**
*/
CPlayer* CPlayerCAD::Create()
{
if (!c_Player)
{
c_Player = new CPlayerCAD();
}
return c_Player;
}
/*
** Create receiver window.
**
*/
void CPlayerCAD::Initialize()
{
// Create windows class
WNDCLASS wc = {0};
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wc.hInstance = g_Instance;
wc.lpfnWndProc = WndProc;
wc.lpszClassName = L"NowPlayingCADClass";
RegisterClass(&wc);
// Create reciever window
m_Window = CreateWindow(
L"NowPlayingCADClass",
L"CD Art Display 1.x Class",
WS_DISABLED,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
NULL,
NULL,
g_Instance,
this);
// Add WM_USER/WM_COPYDATA to allowed messages from lower level processes
HMODULE hUser32 = LoadLibrary(L"user32.dll");
if (hUser32)
{
// Try ChangeWindowMessageFilterEx first (Win7+)
FPCHANGEWINDOWMESSAGEFILTEREX ChangeWindowMessageFilterEx = (FPCHANGEWINDOWMESSAGEFILTEREX)GetProcAddress(hUser32, "ChangeWindowMessageFilterEx");
if (ChangeWindowMessageFilterEx)
{
ChangeWindowMessageFilterEx(m_Window, WM_USER, MSGFLT_ALLOW, NULL);
ChangeWindowMessageFilterEx(m_Window, WM_COPYDATA, MSGFLT_ALLOW, NULL);
}
else
{
// Try ChangeWindowMessageFilter (Vista)
FPCHANGEWINDOWMESSAGEFILTER ChangeWindowMessageFilter = (FPCHANGEWINDOWMESSAGEFILTER)GetProcAddress(hUser32, "ChangeWindowMessageFilter");
if (ChangeWindowMessageFilter)
{
ChangeWindowMessageFilter(WM_USER, MSGFLT_ALLOW);
ChangeWindowMessageFilter(WM_COPYDATA, MSGFLT_ALLOW);
}
}
FreeLibrary(hUser32);
}
WCHAR buffer[MAX_PATH];
LPCTSTR file = g_SettingsFile.c_str();
// Read saved settings
GetPrivateProfileString(L"NowPlaying.dll", L"ClassName", NULL, buffer, MAX_PATH, file);
std::wstring className = buffer;
GetPrivateProfileString(L"NowPlaying.dll", L"WindowName", NULL, buffer, MAX_PATH, file);
std::wstring windowName = buffer;
GetPrivateProfileString(L"NowPlaying.dll", L"PlayerPath", NULL, buffer, MAX_PATH, file);
m_PlayerPath = buffer;
LPCTSTR classSz = className.empty() ? NULL : className.c_str();
LPCTSTR windowSz = windowName.empty() ? NULL : windowName.c_str();
if (classSz || windowSz)
{
m_PlayerWindow = FindWindow(classSz, windowSz);
}
else
{
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classSz = L"CD Art Display IPC Class";
m_PlayerWindow = FindWindow(classSz, NULL);
if (m_PlayerWindow)
{
WritePrivateProfileString(L"NowPlaying.dll", L"ClassName", classSz, file);
windowSz = (GetWindowText(m_PlayerWindow, buffer, MAX_PATH) > 0) ? buffer : NULL;
WritePrivateProfileString(L"NowPlaying.dll", L"WindowName", windowSz, file);
DWORD pID;
GetWindowThreadProcessId(m_PlayerWindow, &pID);
HANDLE hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pID);
if (hProcess)
{
if (GetModuleFileNameEx(hProcess, NULL, buffer, MAX_PATH) > 0)
{
WritePrivateProfileString(L"NowPlaying.dll", L"PlayerPath", buffer, file);
}
CloseHandle(hProcess);
}
}
}
if (m_PlayerWindow)
{
m_Initialized = true;
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if (classSz && wcscmp(classSz, L"CD Art Display IPC Class") == 0)
{
m_ExtendedAPI = true;
}
SendMessage(m_PlayerWindow, WM_USER, (WPARAM)m_Window, IPC_SET_CALLBACK_HWND);
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m_State = (StateType)SendMessage(m_PlayerWindow, WM_USER, 0, IPC_GET_STATE);
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if (m_State != STATE_STOPPED)
{
SendMessage(m_PlayerWindow, WM_USER, 0, IPC_GET_CURRENT_TRACK);
}
}
}
/*
** Destroy reciever window.
**
*/
void CPlayerCAD::Uninitialize()
{
DestroyWindow(m_Window);
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UnregisterClass(L"NowPlayingCADClass", g_Instance);
}
/*
** Window procedure for the reciever window.
**
*/
LRESULT CALLBACK CPlayerCAD::WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
static CPlayerCAD* player;
switch (msg)
{
case WM_CREATE:
{
// Get pointer to the CPlayerCAD class from the CreateWindow call
player = (CPlayerCAD*)((CREATESTRUCT*)lParam)->lpCreateParams;
return 0;
}
case WM_DESTROY:
{
SendMessage(player->m_PlayerWindow, WM_USER, 0, IPC_SHUTDOWN_NOTIFICATION);
return 0;
}
case WM_USER:
switch (lParam)
{
case IPC_TRACK_CHANGED_NOTIFICATION:
{
PostMessage(player->m_PlayerWindow, WM_USER, 0, IPC_GET_CURRENT_TRACK);
break;
}
case IPC_STATE_CHANGED_NOTIFICATION:
{
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player->m_State = (StateType)wParam;
if (player->m_State == STATE_STOPPED)
{
player->ClearData();
}
break;
}
case IPC_VOLUME_CHANGED_NOTIFICATION:
{
player->m_Volume = wParam;
break;
}
case IPC_REPEAT_CHANGED_NOTIFICATION:
{
player->m_Repeat = (bool)wParam;
break;
}
case IPC_SHUFFLE_CHANGED_NOTIFICATION:
{
player->m_Shuffle = (bool)wParam;
break;
}
case IPC_RATING_CHANGED_NOTIFICATION:
{
player->m_Rating = (wParam + 1) / 2; // From 0 - 10 to 0 - 5
break;
}
case IPC_SHUTDOWN_NOTIFICATION:
{
player->m_Initialized = false;
player->ClearData();
break;
}
}
return 0;
case WM_COPYDATA:
{
PCOPYDATASTRUCT cds = (PCOPYDATASTRUCT)lParam;
if (cds->dwData == IPC_CURRENT_TRACK_NOTIFICATION)
{
player->m_Shuffle = (bool)SendMessage(player->m_PlayerWindow, WM_USER, 0, IPC_GET_SHUFFLE);
player->m_Repeat = (bool)SendMessage(player->m_PlayerWindow, WM_USER, 0, IPC_GET_REPEAT);
// TODO: Sent on track update?
++player->m_TrackCount;
WCHAR* data = (WCHAR*)cds->lpData;
WCHAR* pos;
UINT index = 1;
while ((pos = wcschr(data, '\t')) != NULL)
{
switch (index)
{
case 1:
player->m_Title.assign(data, pos - data);
break;
case 2:
player->m_Artist.assign(data, pos - data);
break;
case 3:
player->m_Album.assign(data, pos - data);
break;
case 5:
player->m_Year = (UINT)_wtoi(data);
break;
case 7:
player->m_Number = (UINT)_wtoi(data);
break;
case 8:
player->m_Duration = (UINT)_wtoi(data);
break;
case 9:
player->m_FilePath.assign(data, pos - data);
break;
case 10:
player->m_Rating = ((UINT)_wtoi(data) + 1) / 2; // 0 - 10 -> 0 - 5
break;
case 11:
if (*data == L' ')
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{
player->FindCover();
}
else
{
player->m_CoverPath.assign(data, pos - data);
}
break;
}
data = pos + 1;
++index;
if (index == 12)
{
break;
}
}
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if (player->m_Measures & MEASURE_LYRICS)
{
player->FindLyrics();
}
}
else if (cds->dwData == IPC_REGISTER_NOTIFICATION && !player->m_Initialized)
{
std::wstring data = (WCHAR*)cds->lpData;
if (data[0] == L'1')
{
data.erase(0, 2); // Get rid of the 1\t at the beginning
std::wstring::size_type len = data.find_first_of(L'\t');
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std::wstring className(data, 0, len);
data.erase(0, ++len);
len = data.find_first_of(L'\t');
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std::wstring windowName(data, 0, len);
data.erase(0, ++len);
len = data.find_first_of(L'\t');
player->m_PlayerPath.assign(data, 0, len);
data.erase(0, ++len);
LPCTSTR classSz = className.empty() ? NULL : className.c_str();
LPCTSTR windowSz = windowName.empty() ? NULL : windowName.c_str();
LPCTSTR file = g_SettingsFile.c_str();
WritePrivateProfileString(L"NowPlaying.dll", L"ClassName", classSz, file);
WritePrivateProfileString(L"NowPlaying.dll", L"WindowName", windowSz, file);
WritePrivateProfileString(L"NowPlaying.dll", L"PlayerPath", player->m_PlayerPath.c_str(), file);
player->m_PlayerWindow = FindWindow(classSz, windowSz);
if (player->m_PlayerWindow)
{
player->m_Initialized = true;
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player->m_ExtendedAPI = (classSz && wcscmp(classSz, L"CD Art Display IPC Class") == 0);
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player->m_State = (StateType)SendMessage(player->m_PlayerWindow, WM_USER, 0, IPC_GET_STATE);
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if (player->m_State != STATE_STOPPED)
{
PostMessage(player->m_PlayerWindow, WM_USER, 0, IPC_GET_CURRENT_TRACK);
}
if (player->m_Open)
{
if (wcscmp(windowSz, L"foobar2000") == 0)
{
// Activate foobar2000 in case it starts minimized
SendMessage(player->m_PlayerWindow, WM_USER, 0, IPC_SHOW_WINDOW);
}
player->m_Open = false;
}
}
}
}
}
return 0;
default:
return DefWindowProc(hwnd, msg, wParam, lParam);
}
}
/*
** Called during each update of the main measure.
**
*/
void CPlayerCAD::UpdateData()
{
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if (m_State != STATE_STOPPED)
{
m_Position = SendMessage(m_PlayerWindow, WM_USER, 0, IPC_GET_POSITION);
m_Volume = SendMessage(m_PlayerWindow, WM_USER, 0, IPC_GET_VOLUME);
}
}
/*
** Handles the Pause bang.
**
*/
void CPlayerCAD::Pause()
{
SendMessage(m_PlayerWindow, WM_USER, 0, m_ExtendedAPI ? IPC_PAUSE : IPC_PLAYPAUSE);
}
/*
** Handles the Play bang.
**
*/
void CPlayerCAD::Play()
{
SendMessage(m_PlayerWindow, WM_USER, 0, m_ExtendedAPI ? IPC_PLAY : IPC_PLAYPAUSE);
}
/*
** Handles the Stop bang.
**
*/
void CPlayerCAD::Stop()
{
SendMessage(m_PlayerWindow, WM_USER, 0, IPC_STOP);
}
/*
** Handles the Next bang.
**
*/
void CPlayerCAD::Next()
{
SendMessage(m_PlayerWindow, WM_USER, 0, IPC_NEXT);
}
/*
** Handles the Previous bang.
**
*/
void CPlayerCAD::Previous()
{
SendMessage(m_PlayerWindow, WM_USER, 0, IPC_PREVIOUS);
}
/*
** Handles the SetPosition bang.
**
*/
void CPlayerCAD::SetPosition(int position)
{
SendMessage(m_PlayerWindow, WM_USER, position, IPC_SET_POSITION);
}
/*
** Handles the SetRating bang.
**
*/
void CPlayerCAD::SetRating(int rating)
{
m_Rating = rating;
rating *= 2; // From 0 - 5 to 0 - 10
SendMessage(m_PlayerWindow, WM_USER, rating, IPC_SET_RATING);
}
/*
** Handles the SetVolume bang.
**
*/
void CPlayerCAD::SetVolume(int volume)
{
SendMessage(m_PlayerWindow, WM_USER, volume, IPC_SET_VOLUME);
}
/*
** Handles the SetShuffle bang.
**
*/
void CPlayerCAD::SetShuffle(bool state)
{
SendMessage(m_PlayerWindow, WM_USER, (WPARAM)state, IPC_SET_SHUFFLE);
m_Shuffle = (bool)SendMessage(m_PlayerWindow, WM_USER, 0, IPC_GET_SHUFFLE);
}
/*
** Handles the SetRepeat bang.
**
*/
void CPlayerCAD::SetRepeat(bool state)
{
SendMessage(m_PlayerWindow, WM_USER, (WPARAM)state, IPC_SET_REPEAT);
m_Repeat = (bool)SendMessage(m_PlayerWindow, WM_USER, 0, IPC_GET_REPEAT);
}
/*
** Handles the ClosePlayer bang.
**
*/
void CPlayerCAD::ClosePlayer()
{
SendMessage(m_PlayerWindow, WM_USER, 0, IPC_CLOSE);
// TODO
m_Initialized = false;
ClearData();
}
/*
** Handles the OpenPlayer bang.
**
*/
void CPlayerCAD::OpenPlayer(std::wstring& path)
{
if (!m_Initialized)
{
HINSTANCE ret = NULL;
if (!path.empty())
{
ret = ShellExecute(NULL, L"open", path.c_str(), NULL, NULL, SW_SHOW);
}
else if (!m_PlayerPath.empty())
{
ret = ShellExecute(NULL, L"open", m_PlayerPath.c_str(), NULL, NULL, SW_SHOW);
}
m_Open = (ret > (HINSTANCE)32);
}
else
{
// Bring player to front
SendMessage(m_PlayerWindow, WM_USER, 0, IPC_SHOW_WINDOW);
}
}