/**************************************************************************
* mmioClose [WINMM.@]
*/
MMRESULT WINAPI mmioClose(HMMIO hmmio, UINT uFlags)
{
LPWINE_MMIO wm;
MMRESULT result;
TRACE("(%p, %04X);\n", hmmio, uFlags);
if ((wm = MMIO_Get(hmmio)) == NULL)
return MMSYSERR_INVALHANDLE;
if ((result = MMIO_Flush(wm, 0)) != MMSYSERR_NOERROR)
return result;
result = send_message(wm->ioProc, &wm->info, MMIOM_CLOSE, uFlags, 0, FALSE);
MMIO_SetBuffer(wm, NULL, 0, 0);
wm->ioProc->count--;
if (wm->bTmpIOProc)
MMIO_InstallIOProc(wm->info.fccIOProc, wm->ioProc->pIOProc,
MMIO_REMOVEPROC, wm->ioProc->is_unicode);
MMIO_Destroy(wm);
return result;
}
/**************************************************************************
* mmioFlush [WINMM.@]
*/
MMRESULT WINAPI mmioFlush(HMMIO hmmio, UINT uFlags)
{
LPWINE_MMIO wm;
TRACE("(%p, %04X)\n", hmmio, uFlags);
if ((wm = MMIO_Get(hmmio)) == NULL)
return MMSYSERR_INVALHANDLE;
return MMIO_Flush(wm, uFlags);
}
/**************************************************************************
* mmioSeek [WINMM.@]
*/
LONG WINAPI mmioSeek(HMMIO hmmio, LONG lOffset, INT iOrigin)
{
LPWINE_MMIO wm;
LONG offset;
TRACE("(%p, %08X, %d);\n", hmmio, lOffset, iOrigin);
if ((wm = MMIO_Get(hmmio)) == NULL)
return MMSYSERR_INVALHANDLE;
/* not buffered, direct seek on file */
if (!wm->info.pchBuffer)
return send_message(wm->ioProc, &wm->info, MMIOM_SEEK, lOffset, iOrigin, FALSE);
switch (iOrigin) {
case SEEK_SET:
offset = lOffset;
break;
case SEEK_CUR:
offset = wm->info.lBufOffset + (wm->info.pchNext - wm->info.pchBuffer) + lOffset;
break;
case SEEK_END:
offset = ((wm->info.fccIOProc == FOURCC_MEM)? wm->info.cchBuffer : wm->dwFileSize) - lOffset;
break;
default:
return -1;
}
/* stay in same buffer ? */
/* some memory mapped buffers are defined with -1 as a size */
if ((wm->info.cchBuffer > 0) &&
((offset < wm->info.lBufOffset) ||
(offset >= wm->info.lBufOffset + wm->info.cchBuffer) ||
(offset > wm->dwFileSize && wm->info.fccIOProc != FOURCC_MEM) ||
!wm->bBufferLoaded)) {
/* condition to change buffer */
if ((wm->info.fccIOProc == FOURCC_MEM) ||
MMIO_Flush(wm, 0) != MMSYSERR_NOERROR ||
/* this also sets the wm->info.lDiskOffset field */
send_message(wm->ioProc, &wm->info, MMIOM_SEEK,
offset, SEEK_SET, FALSE) == -1)
return -1;
wm->info.lBufOffset = offset;
wm->bBufferLoaded = FALSE;
wm->info.pchNext = wm->info.pchEndRead = wm->info.pchBuffer;
}
else
wm->info.pchNext = wm->info.pchBuffer + (offset - wm->info.lBufOffset);
TRACE("=> %d\n", offset);
return offset;
}
/**************************************************************************
* mmioWrite [WINMM.@]
*/
LONG WINAPI mmioWrite(HMMIO hmmio, HPCSTR pch, LONG cch)
{
LPWINE_MMIO wm;
LONG count;
TRACE("(%p, %p, %d);\n", hmmio, pch, cch);
if ((wm = MMIO_Get(hmmio)) == NULL)
return -1;
if (wm->info.cchBuffer) {
LONG bytesW = 0;
count = 0;
while (cch) {
if (wm->info.pchNext != wm->info.pchEndWrite) {
count = wm->info.pchEndWrite - wm->info.pchNext;
if (count > cch || count < 0) count = cch;
memcpy(wm->info.pchNext, pch, count);
wm->info.pchNext += count;
pch += count;
cch -= count;
bytesW += count;
wm->info.dwFlags |= MMIO_DIRTY;
} else {
if (wm->info.fccIOProc == FOURCC_MEM) {
if (wm->info.adwInfo[0]) {
/* from where would we get the memory handle? */
FIXME("memory file expansion not implemented!\n");
break;
} else break;
}
}
if (wm->info.pchNext == wm->info.pchEndWrite)
{
MMIO_Flush(wm, MMIO_EMPTYBUF);
MMIO_GrabNextBuffer(wm, FALSE);
}
else break;
}
count = bytesW;
} else {
count = send_message(wm->ioProc, &wm->info, MMIOM_WRITE,
(LPARAM)pch, cch, MMIO_PROC_32A);
wm->info.lBufOffset = wm->info.lDiskOffset;
}
TRACE("bytes written=%d\n", count);
return count;
}
/**************************************************************************
* mmioAdvance [WINMM.@]
*/
MMRESULT WINAPI mmioAdvance(HMMIO hmmio, MMIOINFO* lpmmioinfo, UINT uFlags)
{
LPWINE_MMIO wm;
TRACE("hmmio=%p, lpmmioinfo=%p, uFlags=%04X\n", hmmio, lpmmioinfo, uFlags);
/* NOTE: mmioAdvance16 heavily relies on parameters from lpmmioinfo we're using
* here. be sure if you change something here to check mmioAdvance16 as well
*/
if ((wm = MMIO_Get(hmmio)) == NULL)
return MMSYSERR_INVALHANDLE;
if (!wm->info.cchBuffer)
return MMIOERR_UNBUFFERED;
if (uFlags != MMIO_READ && uFlags != MMIO_WRITE)
return MMSYSERR_INVALPARAM;
if (uFlags == MMIO_WRITE && (lpmmioinfo->dwFlags & MMIO_DIRTY))
{
send_message(wm->ioProc, &wm->info, MMIOM_SEEK,
lpmmioinfo->lBufOffset, SEEK_SET, MMIO_PROC_32A);
send_message(wm->ioProc, &wm->info, MMIOM_WRITE,
(LPARAM)lpmmioinfo->pchBuffer,
lpmmioinfo->pchNext - lpmmioinfo->pchBuffer, MMIO_PROC_32A);
lpmmioinfo->dwFlags &= ~MMIO_DIRTY;
}
if (MMIO_Flush(wm, 0) != MMSYSERR_NOERROR)
return MMIOERR_CANNOTWRITE;
if (lpmmioinfo) {
wm->dwFileSize = max(wm->dwFileSize, lpmmioinfo->lBufOffset +
(lpmmioinfo->pchNext - lpmmioinfo->pchBuffer));
}
MMIO_GrabNextBuffer(wm, uFlags == MMIO_READ);
if (lpmmioinfo) {
lpmmioinfo->pchNext = lpmmioinfo->pchBuffer;
lpmmioinfo->pchEndRead = lpmmioinfo->pchBuffer +
(wm->info.pchEndRead - wm->info.pchBuffer);
lpmmioinfo->pchEndWrite = lpmmioinfo->pchBuffer +
(wm->info.pchEndWrite - wm->info.pchBuffer);
lpmmioinfo->lDiskOffset = wm->info.lDiskOffset;
lpmmioinfo->lBufOffset = wm->info.lBufOffset;
}
return MMSYSERR_NOERROR;
}
/***************************************************************************
* MMIO_SetBuffer [INTERNAL]
*/
static MMRESULT MMIO_SetBuffer(WINE_MMIO* wm, void* pchBuffer, LONG cchBuffer,
UINT uFlags)
{
TRACE("(%p %p %d %u)\n", wm, pchBuffer, cchBuffer, uFlags);
if (cchBuffer > 0xFFFF)
WARN("Untested handling of huge mmio buffers (%d >= 64k)\n", cchBuffer);
if (MMIO_Flush(wm, 0) != MMSYSERR_NOERROR)
return MMIOERR_CANNOTWRITE;
/* free previous buffer if allocated */
if (wm->info.dwFlags & MMIO_ALLOCBUF) {
HeapFree(GetProcessHeap(), 0, wm->info.pchBuffer);
wm->info.pchBuffer = NULL;
wm->info.dwFlags &= ~MMIO_ALLOCBUF;
}
if (pchBuffer) {
wm->info.pchBuffer = pchBuffer;
} else if (cchBuffer) {
if (!(wm->info.pchBuffer = HeapAlloc(GetProcessHeap(), 0, cchBuffer)))
return MMIOERR_OUTOFMEMORY;
wm->info.dwFlags |= MMIO_ALLOCBUF;
} else {
wm->info.pchBuffer = NULL;
}
wm->info.cchBuffer = cchBuffer;
wm->info.pchNext = wm->info.pchBuffer;
wm->info.pchEndRead = wm->info.pchBuffer;
wm->info.pchEndWrite = wm->info.pchBuffer + cchBuffer;
wm->info.lBufOffset = wm->info.lDiskOffset;
wm->bBufferLoaded = FALSE;
return MMSYSERR_NOERROR;
}