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Sweden-Number/dlls/msacm/internal.c

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/* -*- tab-width: 8; c-basic-offset: 4 -*- */
/*
* MSACM32 library
*
* Copyright 1998 Patrik Stridvall
* 1999 Eric Pouech
*/
#include <string.h>
#include "winbase.h"
#include "windef.h"
#include "wingdi.h"
#include "winuser.h"
#include "winerror.h"
#include "winreg.h"
#include "mmsystem.h"
#include "msacm.h"
#include "msacmdrv.h"
#include "wineacm.h"
#include "debugtools.h"
DEFAULT_DEBUG_CHANNEL(msacm);
/**********************************************************************/
HANDLE MSACM_hHeap = (HANDLE) NULL;
PWINE_ACMDRIVERID MSACM_pFirstACMDriverID = NULL;
PWINE_ACMDRIVERID MSACM_pLastACMDriverID = NULL;
#if 0
/***********************************************************************
* MSACM_DumpCache
*/
static void MSACM_DumpCache(PWINE_ACMDRIVERID padid)
{
unsigned i;
TRACE("cFilterTags=%lu cFormatTags=%lu fdwSupport=%08lx\n",
padid->cFilterTags, padid->cFormatTags, padid->fdwSupport);
for (i = 0; i < padid->cache->cFormatTags; i++) {
TRACE("\tdwFormatTag=%lu cbwfx=%lu\n",
padid->aFormatTag[i].dwFormatTag, padid->aFormatTag[i].cbwfx);
}
}
#endif
/***********************************************************************
* MSACM_FindFormatTagInCache [internal]
*
* Returns TRUE is the format tag fmtTag is present in the cache.
* If so, idx is set to its index.
*/
BOOL MSACM_FindFormatTagInCache(WINE_ACMDRIVERID* padid, DWORD fmtTag, LPDWORD idx)
{
unsigned i;
for (i = 0; i < padid->cFormatTags; i++) {
if (padid->aFormatTag[i].dwFormatTag == fmtTag) {
if (idx) *idx = i;
return TRUE;
}
}
return FALSE;
}
/***********************************************************************
* MSACM_FillCache
*/
static BOOL MSACM_FillCache(PWINE_ACMDRIVERID padid)
{
HACMDRIVER had = 0;
int ntag;
ACMDRIVERDETAILSW add;
ACMFORMATDETAILSW aftd;
WAVEFORMATEX wfx;
if (acmDriverOpen(&had, (HACMDRIVERID)padid, 0) != 0)
return FALSE;
padid->aFormatTag = NULL;
add.cbStruct = sizeof(add);
if (MSACM_Message(had, ACMDM_DRIVER_DETAILS, (LPARAM)&add, 0))
goto errCleanUp;
if (add.cFormatTags > 0) {
padid->aFormatTag = HeapAlloc(MSACM_hHeap, HEAP_ZERO_MEMORY,
add.cFormatTags * sizeof(padid->aFormatTag[0]));
if (!padid->aFormatTag) goto errCleanUp;
}
padid->cFormatTags = add.cFormatTags;
padid->cFilterTags = add.cFilterTags;
padid->fdwSupport = add.fdwSupport;
aftd.cbStruct = sizeof(aftd);
/* don't care about retrieving full struct... so a bare WAVEFORMATEX should do */
aftd.pwfx = &wfx;
aftd.cbwfx = sizeof(wfx);
for (ntag = 0; ntag < add.cFormatTags; ntag++) {
aftd.dwFormatIndex = ntag;
if (MSACM_Message(had, ACMDM_FORMAT_DETAILS, (LPARAM)&aftd, ACM_FORMATDETAILSF_INDEX)) {
TRACE("IIOs (%s)\n", padid->pszDriverAlias);
goto errCleanUp;
}
padid->aFormatTag[ntag].dwFormatTag = aftd.dwFormatTag;
padid->aFormatTag[ntag].cbwfx = aftd.cbwfx;
}
acmDriverClose(had, 0);
return TRUE;
errCleanUp:
if (had) acmDriverClose(had, 0);
HeapFree(MSACM_hHeap, 0, padid->aFormatTag);
padid->aFormatTag = NULL;
return FALSE;
}
/***********************************************************************
* MSACM_GetRegistryKey
*/
static LPSTR MSACM_GetRegistryKey(const WINE_ACMDRIVERID* padid)
{
static const char* baseKey = "Software\\Microsoft\\AudioCompressionManager\\DriverCache\\";
LPSTR ret;
int len;
if (!padid->pszDriverAlias) {
ERR("No alias needed for registry entry\n");
return NULL;
}
len = strlen(baseKey);
ret = HeapAlloc(MSACM_hHeap, 0, len + strlen(padid->pszDriverAlias) + 1);
if (!ret) return NULL;
strcpy(ret, baseKey);
strcpy(ret + len, padid->pszDriverAlias);
CharLowerA(ret + len);
return ret;
}
/***********************************************************************
* MSACM_ReadCache
*/
static BOOL MSACM_ReadCache(PWINE_ACMDRIVERID padid)
{
LPSTR key = MSACM_GetRegistryKey(padid);
HKEY hKey;
DWORD type, size;
if (!key) return FALSE;
padid->aFormatTag = NULL;
if (RegCreateKeyA(HKEY_LOCAL_MACHINE, key, &hKey))
goto errCleanUp;
size = sizeof(padid->cFormatTags);
if (RegQueryValueExA(hKey, "cFormatTags", 0, &type, (void*)&padid->cFormatTags, &size))
goto errCleanUp;
size = sizeof(padid->cFilterTags);
if (RegQueryValueExA(hKey, "cFilterTags", 0, &type, (void*)&padid->cFilterTags, &size))
goto errCleanUp;
size = sizeof(padid->fdwSupport);
if (RegQueryValueExA(hKey, "fdwSupport", 0, &type, (void*)&padid->fdwSupport, &size))
goto errCleanUp;
if (padid->cFormatTags > 0) {
size = padid->cFormatTags * sizeof(padid->aFormatTag[0]);
padid->aFormatTag = HeapAlloc(MSACM_hHeap, HEAP_ZERO_MEMORY, size);
if (!padid->aFormatTag) goto errCleanUp;
if (RegQueryValueExA(hKey, "aFormatTagCache", 0, &type, (void*)padid->aFormatTag, &size))
goto errCleanUp;
}
HeapFree(MSACM_hHeap, 0, key);
return TRUE;
errCleanUp:
HeapFree(MSACM_hHeap, 0, key);
HeapFree(MSACM_hHeap, 0, padid->aFormatTag);
padid->aFormatTag = NULL;
RegCloseKey(hKey);
return FALSE;
}
/***********************************************************************
* MSACM_WriteCache
*/
static BOOL MSACM_WriteCache(PWINE_ACMDRIVERID padid)
{
LPSTR key = MSACM_GetRegistryKey(padid);
HKEY hKey;
if (!key) return FALSE;
if (RegCreateKeyA(HKEY_LOCAL_MACHINE, key, &hKey))
goto errCleanUp;
if (RegSetValueExA(hKey, "cFormatTags", 0, REG_DWORD, (void*)&padid->cFormatTags, sizeof(DWORD)))
goto errCleanUp;
if (RegSetValueExA(hKey, "cFilterTags", 0, REG_DWORD, (void*)&padid->cFilterTags, sizeof(DWORD)))
goto errCleanUp;
if (RegSetValueExA(hKey, "fdwSupport", 0, REG_DWORD, (void*)&padid->fdwSupport, sizeof(DWORD)))
goto errCleanUp;
if (RegSetValueExA(hKey, "aFormatTagCache", 0, REG_BINARY,
(void*)padid->aFormatTag,
padid->cFormatTags * sizeof(padid->aFormatTag[0])))
goto errCleanUp;
HeapFree(MSACM_hHeap, 0, key);
return TRUE;
errCleanUp:
HeapFree(MSACM_hHeap, 0, key);
return FALSE;
}
/***********************************************************************
* MSACM_RegisterDriver()
*/
PWINE_ACMDRIVERID MSACM_RegisterDriver(LPSTR pszDriverAlias, LPSTR pszFileName,
HINSTANCE hinstModule)
{
PWINE_ACMDRIVERID padid;
TRACE("('%s', '%s', 0x%08x)\n", pszDriverAlias, pszFileName, hinstModule);
padid = (PWINE_ACMDRIVERID) HeapAlloc(MSACM_hHeap, 0, sizeof(WINE_ACMDRIVERID));
padid->obj.dwType = WINE_ACMOBJ_DRIVERID;
padid->obj.pACMDriverID = padid;
padid->pszDriverAlias = NULL;
if (pszDriverAlias)
{
padid->pszDriverAlias = HeapAlloc( MSACM_hHeap, 0, strlen(pszDriverAlias)+1 );
strcpy( padid->pszDriverAlias, pszDriverAlias );
}
padid->pszFileName = NULL;
if (pszFileName)
{
padid->pszFileName = HeapAlloc( MSACM_hHeap, 0, strlen(pszFileName)+1 );
strcpy( padid->pszFileName, pszFileName );
}
padid->hInstModule = hinstModule;
padid->bEnabled = TRUE;
padid->pACMDriverList = NULL;
padid->pNextACMDriverID = NULL;
padid->pPrevACMDriverID = MSACM_pLastACMDriverID;
if (MSACM_pLastACMDriverID)
MSACM_pLastACMDriverID->pNextACMDriverID = padid;
MSACM_pLastACMDriverID = padid;
if (!MSACM_pFirstACMDriverID)
MSACM_pFirstACMDriverID = padid;
/* disable the driver if we cannot load the cache */
if (!MSACM_ReadCache(padid) && !MSACM_FillCache(padid)) {
WARN("Couldn't load cache for ACM driver (%s)\n", pszFileName);
MSACM_UnregisterDriver(padid);
return NULL;
}
return padid;
}
/***********************************************************************
* MSACM_RegisterAllDrivers()
*/
void MSACM_RegisterAllDrivers(void)
{
LPSTR pszBuffer;
DWORD dwBufferLength;
/* FIXME
* What if the user edits system.ini while the program is running?
* Does Windows handle that?
*/
if (MSACM_pFirstACMDriverID)
return;
/* FIXME: Does not work! How do I determine the section length? */
dwBufferLength = 1024;
/* EPP GetPrivateProfileSectionA("drivers32", NULL, 0, "system.ini"); */
pszBuffer = (LPSTR) HeapAlloc(MSACM_hHeap, 0, dwBufferLength);
if (GetPrivateProfileSectionA("drivers32", pszBuffer, dwBufferLength, "system.ini")) {
char* s = pszBuffer;
while (*s) {
if (!strncasecmp("MSACM.", s, 6)) {
char *s2 = s;
while (*s2 != '\0' && *s2 != '=') s2++;
if (*s2) {
*s2 = '\0';
MSACM_RegisterDriver(s, s2 + 1, 0);
*s2 = '=';
}
}
s += strlen(s) + 1; /* Either next char or \0 */
}
}
HeapFree(MSACM_hHeap, 0, pszBuffer);
MSACM_RegisterDriver("msacm32.dll", "msacm32.dll", 0);
}
/***********************************************************************
* MSACM_UnregisterDriver()
*/
PWINE_ACMDRIVERID MSACM_UnregisterDriver(PWINE_ACMDRIVERID p)
{
PWINE_ACMDRIVERID pNextACMDriverID;
while (p->pACMDriverList)
acmDriverClose((HACMDRIVER) p->pACMDriverList, 0);
if (p->pszDriverAlias)
HeapFree(MSACM_hHeap, 0, p->pszDriverAlias);
if (p->pszFileName)
HeapFree(MSACM_hHeap, 0, p->pszFileName);
HeapFree(MSACM_hHeap, 0, p->aFormatTag);
if (p == MSACM_pFirstACMDriverID)
MSACM_pFirstACMDriverID = p->pNextACMDriverID;
if (p == MSACM_pLastACMDriverID)
MSACM_pLastACMDriverID = p->pPrevACMDriverID;
if (p->pPrevACMDriverID)
p->pPrevACMDriverID->pNextACMDriverID = p->pNextACMDriverID;
if (p->pNextACMDriverID)
p->pNextACMDriverID->pPrevACMDriverID = p->pPrevACMDriverID;
pNextACMDriverID = p->pNextACMDriverID;
HeapFree(MSACM_hHeap, 0, p);
return pNextACMDriverID;
}
/***********************************************************************
* MSACM_UnregisterAllDrivers()
*/
void MSACM_UnregisterAllDrivers(void)
{
PWINE_ACMDRIVERID p = MSACM_pFirstACMDriverID;
while (p) {
MSACM_WriteCache(p);
p = MSACM_UnregisterDriver(p);
}
}
/***********************************************************************
* MSACM_GetObj()
*/
PWINE_ACMOBJ MSACM_GetObj(HACMOBJ hObj, DWORD type)
{
PWINE_ACMOBJ pao = (PWINE_ACMOBJ)hObj;
if (pao == NULL || IsBadReadPtr(pao, sizeof(WINE_ACMOBJ)) ||
((type != WINE_ACMOBJ_DONTCARE) && (type != pao->dwType)))
return NULL;
return pao;
}
/***********************************************************************
* MSACM_GetDriverID()
*/
PWINE_ACMDRIVERID MSACM_GetDriverID(HACMDRIVERID hDriverID)
{
return (PWINE_ACMDRIVERID)MSACM_GetObj((HACMOBJ)hDriverID, WINE_ACMOBJ_DRIVERID);
}
/***********************************************************************
* MSACM_GetDriver()
*/
PWINE_ACMDRIVER MSACM_GetDriver(HACMDRIVER hDriver)
{
return (PWINE_ACMDRIVER)MSACM_GetObj((HACMOBJ)hDriver, WINE_ACMOBJ_DRIVER);
}
/***********************************************************************
* MSACM_Message()
*/
MMRESULT MSACM_Message(HACMDRIVER had, UINT uMsg, LPARAM lParam1, LPARAM lParam2)
{
PWINE_ACMDRIVER pad = MSACM_GetDriver(had);
return pad ? SendDriverMessage(pad->hDrvr, uMsg, lParam1, lParam2) : MMSYSERR_INVALHANDLE;
}
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