You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
426 lines
11 KiB
426 lines
11 KiB
// mediautil.cpp: media bar utility routines
|
|
|
|
#include "stock.h"
|
|
#include "browseui.h"
|
|
#include "mediautil.h"
|
|
|
|
#define WZ_SMIE_MEDIA TEXT("Software\\Microsoft\\Internet Explorer\\Media")
|
|
#define WZ_SMIE_MEDIA_MIME TEXT("Software\\Microsoft\\Internet Explorer\\Media\\MimeTypes")
|
|
#define WZ_AUTOPLAY TEXT("Autoplay")
|
|
#define WZ_AUTOPLAYPROMPT TEXT("AutoplayPrompt")
|
|
|
|
#define MAX_REG_VALUE_LENGTH 50
|
|
#define MAX_MIME_LENGTH 256
|
|
|
|
|
|
static LPTSTR rgszMimeTypes[] = {
|
|
TEXT("video/avi"),
|
|
TEXT("video/mpeg"),
|
|
TEXT("video/msvideo"),
|
|
TEXT("video/x-ivf"),
|
|
TEXT("video/x-mpeg"),
|
|
TEXT("video/x-mpeg2a"),
|
|
TEXT("video/x-ms-asf"),
|
|
TEXT("video/x-msvideo"),
|
|
TEXT("video/x-ms-wm"),
|
|
TEXT("video/x-ms-wmv"),
|
|
TEXT("video/x-ms-wvx"),
|
|
TEXT("video/x-ms-wmx"),
|
|
TEXT("video/x-ms-wmp"),
|
|
TEXT("audio/mp3"),
|
|
TEXT("audio/aiff"),
|
|
TEXT("audio/basic"),
|
|
TEXT("audio/mid"),
|
|
TEXT("audio/midi"),
|
|
TEXT("audio/mpeg"),
|
|
TEXT("audio/mpegurl"),
|
|
TEXT("audio/wav"),
|
|
TEXT("audio/x-aiff"),
|
|
TEXT("audio/x-mid"),
|
|
TEXT("audio/x-midi"),
|
|
TEXT("audio/x-mpegurl"),
|
|
TEXT("audio/x-ms-wax"),
|
|
TEXT("audio/x-ms-wma"),
|
|
TEXT("audio/x-background"),
|
|
TEXT("audio/x-wav"),
|
|
TEXT("midi/mid"),
|
|
TEXT("application/x-ms-wmd")
|
|
};
|
|
|
|
|
|
|
|
//+----------------------------------------------------------------------------------------
|
|
// CMediaBarUtil Methods
|
|
//-----------------------------------------------------------------------------------------
|
|
|
|
HUSKEY
|
|
CMediaBarUtil::GetMediaRegKey()
|
|
{
|
|
return OpenRegKey(WZ_SMIE_MEDIA);
|
|
}
|
|
|
|
HUSKEY
|
|
CMediaBarUtil::OpenRegKey(TCHAR * pchName)
|
|
{
|
|
HUSKEY hUSKey = NULL;
|
|
|
|
if (pchName)
|
|
{
|
|
LONG lRet = SHRegCreateUSKey(
|
|
pchName,
|
|
KEY_ALL_ACCESS,
|
|
NULL,
|
|
&hUSKey,
|
|
SHREGSET_HKCU);
|
|
|
|
if ((ERROR_SUCCESS != lRet) || (NULL == hUSKey))
|
|
{
|
|
hUSKey = NULL;
|
|
ASSERT(FALSE && L"couldn't open Key for registry settings");
|
|
}
|
|
}
|
|
|
|
return hUSKey;
|
|
}
|
|
|
|
HRESULT
|
|
CMediaBarUtil::CloseRegKey(HUSKEY hUSKey)
|
|
{
|
|
HRESULT hr = S_OK;
|
|
|
|
if (hUSKey)
|
|
{
|
|
DWORD dwRet = SHRegCloseUSKey(hUSKey);
|
|
if (ERROR_SUCCESS != dwRet)
|
|
{
|
|
ASSERT(FALSE && L"couldn't close Reg Key");
|
|
hr = E_FAIL;
|
|
}
|
|
}
|
|
|
|
return hr;
|
|
}
|
|
|
|
//+-----------------------------------------------------------------------
|
|
//
|
|
// Member: IsRegValueTrue
|
|
//
|
|
// Overview: Check if given value is true
|
|
//
|
|
// Arguments: [hUSKey] Key to read from
|
|
// [pchName] name of the value to read out
|
|
// [pfValue] out param (true/false Reg value)
|
|
//
|
|
// Returns: S_FALSE if Value does not exist
|
|
// S_OK otherwise
|
|
//
|
|
//------------------------------------------------------------------------
|
|
HRESULT CMediaBarUtil::IsRegValueTrue(HUSKEY hUSKey, TCHAR * pchName, BOOL *pfValue)
|
|
{
|
|
DWORD dwSize = MAX_REG_VALUE_LENGTH;
|
|
DWORD dwType;
|
|
BYTE bDataBuf[MAX_REG_VALUE_LENGTH];
|
|
LONG lRet;
|
|
BOOL bRet = FALSE;
|
|
HRESULT hr = E_FAIL;
|
|
|
|
if (!hUSKey || !pfValue || !pchName)
|
|
{
|
|
ASSERT(FALSE);
|
|
hr = E_FAIL;
|
|
goto done;
|
|
}
|
|
|
|
lRet = SHRegQueryUSValue(hUSKey,
|
|
pchName,
|
|
&dwType,
|
|
bDataBuf,
|
|
&dwSize,
|
|
FALSE,
|
|
NULL,
|
|
0);
|
|
|
|
if (ERROR_SUCCESS != lRet)
|
|
{
|
|
hr = S_FALSE;
|
|
goto done;
|
|
}
|
|
|
|
if (REG_DWORD == dwType)
|
|
{
|
|
bRet = (*(DWORD*)bDataBuf != 0);
|
|
}
|
|
else if (REG_SZ == dwType)
|
|
{
|
|
TCHAR ch = (TCHAR)(*bDataBuf);
|
|
|
|
if (TEXT('1') == ch ||
|
|
TEXT('y') == ch ||
|
|
TEXT('Y') == ch)
|
|
{
|
|
bRet = TRUE;
|
|
}
|
|
else
|
|
{
|
|
bRet = FALSE;
|
|
}
|
|
}
|
|
else if (REG_BINARY == dwType)
|
|
{
|
|
bRet = (*(BYTE*)bDataBuf != 0);
|
|
}
|
|
|
|
hr = S_OK;
|
|
done:
|
|
if (pfValue)
|
|
*pfValue = bRet;
|
|
return hr;
|
|
}
|
|
|
|
// Value is implicity TRUE, unless it exists and is set to FALSE
|
|
BOOL
|
|
CMediaBarUtil::GetImplicitMediaRegValue(TCHAR * pchName)
|
|
{
|
|
BOOL fRet = FALSE;
|
|
|
|
if (pchName)
|
|
{
|
|
HUSKEY hMediaKey = GetMediaRegKey();
|
|
if (hMediaKey)
|
|
{
|
|
BOOL fVal = FALSE;
|
|
HRESULT hr = E_FAIL;
|
|
|
|
hr = IsRegValueTrue(hMediaKey, pchName, &fVal);
|
|
|
|
if ((S_OK == hr) && (FALSE == fVal))
|
|
{
|
|
fRet = FALSE;
|
|
}
|
|
else
|
|
{
|
|
// true if key is not present or explicitly set to true
|
|
fRet = TRUE;
|
|
}
|
|
|
|
CloseRegKey(hMediaKey);
|
|
}
|
|
}
|
|
|
|
return fRet;
|
|
}
|
|
|
|
BOOL
|
|
CMediaBarUtil::GetAutoplay()
|
|
{
|
|
return GetImplicitMediaRegValue(WZ_AUTOPLAY);
|
|
}
|
|
|
|
HRESULT CMediaBarUtil::SetMediaRegValue(LPWSTR pstrName, DWORD dwRegDataType, void * pvData, DWORD cbData, BOOL fMime /* = FALSE */)
|
|
{
|
|
HRESULT hr = E_FAIL;
|
|
|
|
if (pstrName && pvData && (cbData > 0))
|
|
{
|
|
HUSKEY hMediaKey = (fMime == TRUE) ? GetMimeRegKey() : GetMediaRegKey();
|
|
|
|
if (hMediaKey)
|
|
{
|
|
LONG lRet = SHRegWriteUSValue(hMediaKey,
|
|
pstrName,
|
|
dwRegDataType,
|
|
pvData,
|
|
cbData,
|
|
SHREGSET_FORCE_HKCU);
|
|
if (ERROR_SUCCESS == lRet)
|
|
{
|
|
hr = S_OK;
|
|
}
|
|
else
|
|
{
|
|
ASSERT(FALSE && L"couldn't write reg value");
|
|
}
|
|
|
|
CloseRegKey(hMediaKey);
|
|
}
|
|
}
|
|
|
|
return hr;
|
|
}
|
|
|
|
HUSKEY
|
|
CMediaBarUtil::GetMimeRegKey()
|
|
{
|
|
return OpenRegKey(WZ_SMIE_MEDIA_MIME);
|
|
}
|
|
|
|
BOOL
|
|
CMediaBarUtil::GetAutoplayPrompt()
|
|
{
|
|
return GetImplicitMediaRegValue(WZ_AUTOPLAYPROMPT);
|
|
}
|
|
|
|
HRESULT
|
|
CMediaBarUtil::ToggleAutoplayPrompting(BOOL fOn)
|
|
{
|
|
HRESULT hr = E_FAIL;
|
|
DWORD dwData = 0;
|
|
|
|
dwData = (TRUE == fOn ? 0x1 : 0x0);
|
|
|
|
hr = SetMediaRegValue(WZ_AUTOPLAYPROMPT, REG_BINARY, (void*) &dwData, (DWORD) 1);
|
|
|
|
return hr;
|
|
}
|
|
|
|
|
|
HRESULT
|
|
CMediaBarUtil::ToggleAutoplay(BOOL fOn)
|
|
{
|
|
HRESULT hr = E_FAIL;
|
|
DWORD dwData = 0;
|
|
|
|
dwData = (TRUE == fOn ? 0x1 : 0x0);
|
|
|
|
hr = SetMediaRegValue(WZ_AUTOPLAY, REG_BINARY, (void*) &dwData, (DWORD) 1);
|
|
|
|
return hr;
|
|
}
|
|
|
|
|
|
BOOL
|
|
CMediaBarUtil::IsRecognizedMime(TCHAR * szMime)
|
|
{
|
|
BOOL fRet = FALSE;
|
|
|
|
if (!szMime || !(*szMime))
|
|
goto done;
|
|
|
|
for (int i = 0; i < ARRAYSIZE(rgszMimeTypes); i++)
|
|
{
|
|
if (0 == StrCmpI(rgszMimeTypes[i], szMime))
|
|
{
|
|
fRet = TRUE;
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
done:
|
|
return fRet;
|
|
}
|
|
|
|
|
|
// this function checks if the media bar should play this mime type
|
|
HRESULT
|
|
CMediaBarUtil::ShouldPlay(TCHAR * szMime, BOOL * pfShouldPlay)
|
|
{
|
|
BOOL fRet = FALSE;
|
|
HRESULT hr = E_FAIL;
|
|
|
|
HUSKEY hKeyMime = GetMimeRegKey();
|
|
if (!hKeyMime)
|
|
goto done;
|
|
|
|
// Bail if Autoplay is disabled
|
|
if (FALSE == GetAutoplay())
|
|
{
|
|
goto done;
|
|
}
|
|
|
|
// bail if this is not a recognized mime type
|
|
if (FALSE == IsRecognizedMime(szMime))
|
|
goto done;
|
|
|
|
// check if the user wants us to play everything
|
|
if (FALSE == GetAutoplayPrompt())
|
|
{
|
|
fRet = TRUE;
|
|
hr = S_OK;
|
|
goto done;
|
|
}
|
|
|
|
// see if user wants us to play this mime type
|
|
hr = IsRegValueTrue(hKeyMime, szMime, &fRet);
|
|
if (FAILED(hr))
|
|
goto done;
|
|
|
|
if (S_FALSE == hr)
|
|
{
|
|
// S_FALSE means we have not asked the user about this mime type.
|
|
// Which means the media bar should get a crack at this file
|
|
// and ask the user if it should play this file.
|
|
fRet = TRUE;
|
|
}
|
|
|
|
done:
|
|
*pfShouldPlay = fRet;
|
|
|
|
if (hKeyMime)
|
|
CloseRegKey(hKeyMime);
|
|
|
|
return hr;
|
|
}
|
|
|
|
|
|
BOOL
|
|
CMediaBarUtil::IsWMP7OrGreaterInstalled()
|
|
{
|
|
TCHAR szPath[50];
|
|
szPath[0] = 0;
|
|
DWORD dwType, cb = sizeof(szPath), dwInstalled=0, cb2=sizeof(dwInstalled);
|
|
return ((ERROR_SUCCESS==SHGetValue(HKEY_LOCAL_MACHINE, REG_WMP8_STR, TEXT("version"), &dwType, szPath, &cb))
|
|
&& ((DWORD)(*szPath-TEXT('0'))>=7)
|
|
&& (ERROR_SUCCESS==SHGetValue(HKEY_LOCAL_MACHINE, REG_WMP8_STR, TEXT("IsInstalled"), &dwType, &dwInstalled, &cb2))
|
|
&& (dwInstalled==1));
|
|
}
|
|
|
|
typedef UINT (WINAPI *GetSystemWow64DirectoryPtr) (PSTR pszBuffer, UINT uSize);
|
|
typedef BOOL (WINAPI *IsNTAdmin) (DWORD, DWORD*);
|
|
|
|
BOOL
|
|
CMediaBarUtil::IsWMP7OrGreaterCapable()
|
|
{
|
|
static BOOL fInitialized = FALSE;
|
|
static BOOL fCapable = TRUE;
|
|
if (!fInitialized)
|
|
{
|
|
// WMP isn't supported on NT4, IA64, or DataCenter.
|
|
// If WMP isn't already installed, and we're not running with admin privileges, we might as well fail
|
|
// since we need WMP to function.
|
|
|
|
fCapable = IsOS(OS_WIN2000ORGREATER);
|
|
if (!fCapable)
|
|
{
|
|
fCapable = IsOS(OS_WIN98ORGREATER);
|
|
}
|
|
else
|
|
{
|
|
CHAR szPath[MAX_PATH];
|
|
|
|
HMODULE hModule = GetModuleHandle(TEXT("kernel32.dll"));
|
|
if (hModule)
|
|
{
|
|
GetSystemWow64DirectoryPtr func = (GetSystemWow64DirectoryPtr)GetProcAddress(hModule, "GetSystemWow64DirectoryA");
|
|
fCapable = !(func && func(szPath, ARRAYSIZE(szPath)));
|
|
}
|
|
if (fCapable && !IsWMP7OrGreaterInstalled())
|
|
{
|
|
HMODULE hModule = LoadLibrary(TEXT("advpack.dll"));
|
|
if (hModule)
|
|
{
|
|
IsNTAdmin func = (IsNTAdmin)GetProcAddress(hModule, "IsNTAdmin");
|
|
fCapable = func && func(0, NULL);
|
|
FreeLibrary(hModule);
|
|
}
|
|
}
|
|
}
|
|
if (IsOS(OS_DATACENTER))
|
|
{
|
|
fCapable = FALSE;
|
|
}
|
|
fInitialized = TRUE;
|
|
}
|
|
return fCapable;
|
|
}
|
|
|
|
|