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Audio codecs were erroneously being listed multiple times, making it 

difficult to run certain applications like VirtualDub.
This commit is contained in:
Waldeck Schutzer 2003-01-23 21:21:33 +00:00 committed by Alexandre Julliard
parent ab908c4162
commit dda7f979d5
1 changed files with 66 additions and 29 deletions
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95
dlls/msacm/format.c
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@ -758,36 +758,73 @@ MMRESULT WINAPI acmFormatTagEnumW(HACMDRIVER had, PACMFORMATTAGDETAILSW paftd,
if (paftd->cbStruct < sizeof(*paftd)) return MMSYSERR_INVALPARAM;
if (had) FIXME("had != NULL, not supported\n");
/* (WS) MSDN info page says that if had != 0, then we should find
* the specific driver to get its tags from. Therefore I'm removing
* the FIXME call and adding a search block below. It also seems
* that the lack of this functionality was the responsible for
* codecs to be multiply and incorrectly listed.
*/
for (padid = MSACM_pFirstACMDriverID; padid; padid = padid->pNextACMDriverID) {
/* should check for codec only */
if (!(padid->fdwSupport & ACMDRIVERDETAILS_SUPPORTF_DISABLED) &&
acmDriverOpen(&had, (HACMDRIVERID)padid, 0) == MMSYSERR_NOERROR) {
for (i = 0; i < padid->cFormatTags; i++) {
paftd->dwFormatTagIndex = i;
if (MSACM_Message(had, ACMDM_FORMATTAG_DETAILS,
(LPARAM)paftd, ACM_FORMATTAGDETAILSF_INDEX) == MMSYSERR_NOERROR) {
if (paftd->dwFormatTag == WAVE_FORMAT_PCM) {
if (paftd->szFormatTag[0] == 0)
MultiByteToWideChar( CP_ACP, 0, "PCM", -1, paftd->szFormatTag,
sizeof(paftd->szFormatTag)/sizeof(WCHAR) );
/* FIXME (EPP): I'm not sure this is the correct
* algorithm (should make more sense to apply the same
* for all already loaded formats, but this will do
* for now
*/
if (bPcmDone) continue;
bPcmDone = TRUE;
}
if (!(fnCallback)((HACMDRIVERID)padid, paftd, dwInstance, padid->fdwSupport)) {
acmDriverClose(had, 0);
return MMSYSERR_NOERROR;
}
}
}
}
acmDriverClose(had, 0);
/* if (had) FIXME("had != NULL, not supported\n"); */
if (had) {
if (acmDriverID((HACMOBJ)had, (HACMDRIVERID *)&padid, 0) != MMSYSERR_NOERROR)
return MMSYSERR_INVALHANDLE;
for (i = 0; i < padid->cFormatTags; i++) {
paftd->dwFormatTagIndex = i;
if (MSACM_Message(had, ACMDM_FORMATTAG_DETAILS,
(LPARAM)paftd, ACM_FORMATTAGDETAILSF_INDEX) == MMSYSERR_NOERROR) {
if (paftd->dwFormatTag == WAVE_FORMAT_PCM) {
if (paftd->szFormatTag[0] == 0)
MultiByteToWideChar( CP_ACP, 0, "PCM", -1, paftd->szFormatTag,
sizeof(paftd->szFormatTag)/sizeof(WCHAR) );
/* (WS) I'm preserving this PCM hack since it seems to be
* correct. Please notice this block was borrowed from
* below.
*/
if (bPcmDone) continue;
bPcmDone = TRUE;
}
if (!(fnCallback)((HACMDRIVERID)padid, paftd, dwInstance, padid->fdwSupport))
return MMSYSERR_NOERROR;
}
}
}
/* if had==0 then search for the first suitable driver */
else {
for (padid = MSACM_pFirstACMDriverID; padid; padid = padid->pNextACMDriverID) {
/* should check for codec only */
if (!(padid->fdwSupport & ACMDRIVERDETAILS_SUPPORTF_DISABLED) &&
acmDriverOpen(&had, (HACMDRIVERID)padid, 0) == MMSYSERR_NOERROR) {
for (i = 0; i < padid->cFormatTags; i++) {
paftd->dwFormatTagIndex = i;
if (MSACM_Message(had, ACMDM_FORMATTAG_DETAILS,
(LPARAM)paftd, ACM_FORMATTAGDETAILSF_INDEX) == MMSYSERR_NOERROR) {
if (paftd->dwFormatTag == WAVE_FORMAT_PCM) {
if (paftd->szFormatTag[0] == 0)
MultiByteToWideChar( CP_ACP, 0, "PCM", -1, paftd->szFormatTag,
sizeof(paftd->szFormatTag)/sizeof(WCHAR) );
/* FIXME (EPP): I'm not sure this is the correct
* algorithm (should make more sense to apply the same
* for all already loaded formats, but this will do
* for now
*/
if (bPcmDone) continue;
bPcmDone = TRUE;
}
if (!(fnCallback)((HACMDRIVERID)padid, paftd, dwInstance, padid->fdwSupport)) {
acmDriverClose(had, 0);
return MMSYSERR_NOERROR;
}
}
}
}
acmDriverClose(had, 0);
}
}
return MMSYSERR_NOERROR;
}