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msacm: Preserve value of cbStruct in acmDriverDetails. 

Ensure that the cbStruct member of the ACMDRIVERDETAILS[AW] struct is
filled with a valid value before returning.
Fill the cbStruct member of the ACMDRIVERDETAILS[AW] before sending a
ACMDM_DRIVER_DETAILS message to an installed codec that might be a
native library: native ACM codecs expect cbStruct to be valid before
filling the rest of the struct with any data.
This commit is contained in:
Alex Villacís Lasso 2005-12-20 11:48:01 +01:00 committed by Alexandre Julliard
parent fe36b7baca
commit 9a95aa7da2
2 changed files with 14 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
dlls/msacm/driver.c
View File

@ -184,7 +184,8 @@ MMRESULT WINAPI acmDriverDetailsA(HACMDRIVERID hadid, PACMDRIVERDETAILSA padd, D
sizeof(padda.szLicensing), NULL, NULL );
WideCharToMultiByte( CP_ACP, 0, addw.szFeatures, -1, padda.szFeatures,
sizeof(padda.szFeatures), NULL, NULL );
memcpy(padd, &padda, min(padd->cbStruct, sizeof(*padd)));
padda.cbStruct = min(padd->cbStruct, sizeof(*padd));
memcpy(padd, &padda, padda.cbStruct);
}
return mmr;
}
@ -217,10 +218,12 @@ MMRESULT WINAPI acmDriverDetailsW(HACMDRIVERID hadid, PACMDRIVERDETAILSW padd, D
mmr = acmDriverOpen(&acmDrvr, hadid, 0);
if (mmr == MMSYSERR_NOERROR) {
ACMDRIVERDETAILSW paddw;
paddw.cbStruct = sizeof(paddw);
mmr = (MMRESULT)MSACM_Message(acmDrvr, ACMDM_DRIVER_DETAILS, (LPARAM)&paddw, 0);
acmDriverClose(acmDrvr, 0);
memcpy(padd, &paddw, min(padd->cbStruct, sizeof(*padd)));
paddw.cbStruct = min(padd->cbStruct, sizeof(*padd));
memcpy(padd, &paddw, paddw.cbStruct);
}
return mmr;

9
dlls/msacm/tests/msacm.c
View File

@ -120,6 +120,15 @@ static BOOL CALLBACK DriverEnumProc(HACMDRIVERID hadid,
"acmDriverDetails(): rc = %08x, should be %08x\n",
rc, MMSYSERR_NOERROR);
/* cbStruct should contain size of returned data (at most sizeof(dd))
TODO: should it be *exactly* sizeof(dd), as tested here?
*/
if (rc == MMSYSERR_NOERROR) {
ok(dd.cbStruct == sizeof(dd),
"acmDriverDetails(): cbStruct = %08lx, should be %08lx\n",
dd.cbStruct, (unsigned long)sizeof(dd));
}
if (rc == MMSYSERR_NOERROR && winetest_interactive) {
trace(" Short name: %s\n", dd.szShortName);
trace(" Long name: %s\n", dd.szLongName);