LRESULT WINAPI acmDriverMessage	(	HACMDRIVER	had,
		UINT	uMsg,
		LPARAM	lParam1,
		LPARAM	lParam2
	)
Definition at line 395 of file driver.c.
Referenced by acmDriverMessage().
{
    TRACE("(%p, %04x, %08lx, %08lx\n", had, uMsg, lParam1, lParam2);

    if ((uMsg >= ACMDM_USER && uMsg < ACMDM_RESERVED_LOW) ||
    uMsg == ACMDM_DRIVER_ABOUT ||
    uMsg == DRV_QUERYCONFIGURE ||
    uMsg == DRV_CONFIGURE)
    {
        PWINE_ACMDRIVERID padid;
        LRESULT lResult;
        LPDRVCONFIGINFO pConfigInfo = NULL;
        LPWSTR section_name = NULL;
        LPWSTR alias_name = 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) {
                /* DRVCONFIGINFO is only 12 bytes long, but native msacm
                 * reports a 16-byte structure to codecs, so allocate 16 bytes,
                 * just to be on the safe side.
                 */
                const unsigned int iStructSize = 16;
                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;

                    section_name = HeapAlloc(MSACM_hHeap, 0, (strlenW(drivers32) + 1) * sizeof(WCHAR));
                    if (section_name) strcpyW(section_name, drivers32);
                    pConfigInfo->lpszDCISectionName = section_name;
                    alias_name = HeapAlloc(MSACM_hHeap, 0, (strlenW(pAlias) + 1) * sizeof(WCHAR));
                    if (alias_name) strcpyW(alias_name, pAlias);
                    pConfigInfo->lpszDCIAliasName = alias_name;

                    if (pConfigInfo->lpszDCISectionName == NULL || pConfigInfo->lpszDCIAliasName == NULL) {
                        HeapFree(MSACM_hHeap, 0, alias_name);
                        HeapFree(MSACM_hHeap, 0, section_name);
                        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 = MSACM_Message((HACMDRIVER)padid->pACMDriverList, 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, alias_name);
            HeapFree(MSACM_hHeap, 0, section_name);
            HeapFree(MSACM_hHeap, 0, pConfigInfo);
        }
        return lResult;
    }
    WARN("invalid parameter\n");
    return MMSYSERR_INVALPARAM;
}
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