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msacm: acmDriverMessage() with proper support for DRV_CONFIGURE. 

Allocate and supply a DRVCONFIGINFO structure for DRV_CONFIGURE when
application does not supply one.
This commit is contained in:
Alex Villacís Lasso 2006-01-18 12:13:36 +01:00 committed by Alexandre Julliard
parent e3851bc7f7
commit d20addf418
1 changed files with 88 additions and 1 deletions
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89
dlls/msacm/driver.c
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@ -40,6 +40,7 @@
#include "msacmdrv.h"
#include "wineacm.h"
#include "wine/debug.h"
#include "wine/unicode.h"
WINE_DEFAULT_DEBUG_CHANNEL(msacm);
@ -369,6 +370,15 @@ MMRESULT WINAPI acmDriverID(HACMOBJ hao, PHACMDRIVERID phadid, DWORD fdwDriverID
/***********************************************************************
* acmDriverMessage (MSACM32.@)
*
* Note: MSDN documentation (July 2001) is incomplete. This function
* accepts sending messages to an HACMDRIVERID in addition to the
* documented HACMDRIVER. In fact, for DRV_QUERYCONFIGURE and DRV_CONFIGURE,
* this might actually be the required mode of operation.
*
* Note: For DRV_CONFIGURE, msacm supplies its own DRVCONFIGINFO structure
* when the application fails to supply one. Some native drivers depend on
* this and refuse to display unless a valid DRVCONFIGINFO structure is
* built and supplied.
*/
LRESULT WINAPI acmDriverMessage(HACMDRIVER had, UINT uMsg, LPARAM lParam1, LPARAM lParam2)
{
@ -378,8 +388,85 @@ LRESULT WINAPI acmDriverMessage(HACMDRIVER had, UINT uMsg, LPARAM lParam1, LPARA
uMsg == ACMDM_DRIVER_ABOUT ||
uMsg == DRV_QUERYCONFIGURE ||
uMsg == DRV_CONFIGURE)
return MSACM_Message(had, uMsg, lParam1, lParam2);
{
PWINE_ACMDRIVERID padid;
LRESULT lResult;
LPDRVCONFIGINFO pConfigInfo = NULL;
/* Check whether handle is an HACMDRIVERID */
padid = MSACM_GetDriverID((HACMDRIVERID)had);
/* If the message is DRV_CONFIGURE, and the application provides no
DRVCONFIGINFO structure, msacm must supply its own.
*/
if (uMsg == DRV_CONFIGURE && lParam2 == 0) {
LPWSTR pAlias;
/* Get the alias from the HACMDRIVERID */
if (padid) {
pAlias = padid->pszDriverAlias;
if (pAlias == NULL) {
WARN("DRV_CONFIGURE: no alias for this driver, cannot self-supply alias\n");
}
} else {
FIXME("DRV_CONFIGURE: reverse lookup HACMDRIVER -> HACMDRIVERID not implemented\n");
pAlias = NULL;
}
if (pAlias != NULL) {
unsigned int iStructSize = 16;
/* This verification is required because DRVCONFIGINFO is 12 bytes
long, yet native msacm reports a 16-byte structure to codecs.
*/
if (iStructSize < sizeof(DRVCONFIGINFO)) iStructSize = sizeof(DRVCONFIGINFO);
pConfigInfo = HeapAlloc(MSACM_hHeap, 0, iStructSize);
if (!pConfigInfo) {
ERR("OOM while supplying DRVCONFIGINFO for DRV_CONFIGURE, using NULL\n");
} else {
static const WCHAR drivers32[] = {'D','r','i','v','e','r','s','3','2','\0'};
pConfigInfo->dwDCISize = iStructSize;
pConfigInfo->lpszDCISectionName = HeapAlloc(MSACM_hHeap, 0, (strlenW(drivers32) + 1) * sizeof(WCHAR));
if (pConfigInfo->lpszDCISectionName) strcpyW((WCHAR *)pConfigInfo->lpszDCISectionName, drivers32);
pConfigInfo->lpszDCIAliasName = HeapAlloc(MSACM_hHeap, 0, (strlenW(pAlias) + 1) * sizeof(WCHAR));
if (pConfigInfo->lpszDCIAliasName) strcpyW((WCHAR *)pConfigInfo->lpszDCIAliasName, pAlias);
if (pConfigInfo->lpszDCISectionName == NULL || pConfigInfo->lpszDCIAliasName == NULL) {
HeapFree(MSACM_hHeap, 0, (void *)pConfigInfo->lpszDCIAliasName);
HeapFree(MSACM_hHeap, 0, (void *)pConfigInfo->lpszDCISectionName);
HeapFree(MSACM_hHeap, 0, pConfigInfo);
pConfigInfo = NULL;
ERR("OOM while supplying DRVCONFIGINFO for DRV_CONFIGURE, using NULL\n");
}
}
}
lParam2 = (LPARAM)pConfigInfo;
}
if (padid) {
/* Handle is really an HACMDRIVERID, must have an open session to get an HACMDRIVER */
if (padid->pACMDriverList != NULL) {
lResult = SendDriverMessage(padid->pACMDriverList->hDrvr, uMsg, lParam1, lParam2);
} else {
MMRESULT mmr = acmDriverOpen(&had, (HACMDRIVERID)padid, 0);
if (mmr != MMSYSERR_NOERROR) {
lResult = MMSYSERR_INVALPARAM;
} else {
lResult = acmDriverMessage(had, uMsg, lParam1, lParam2);
acmDriverClose(had, 0);
}
}
} else {
lResult = MSACM_Message(had, uMsg, lParam1, lParam2);
}
if (pConfigInfo) {
HeapFree(MSACM_hHeap, 0, (void *)pConfigInfo->lpszDCIAliasName);
HeapFree(MSACM_hHeap, 0, (void *)pConfigInfo->lpszDCISectionName);
HeapFree(MSACM_hHeap, 0, pConfigInfo);
}
return lResult;
}
WARN("invalid parameter\n");
return MMSYSERR_INVALPARAM;
}