340 lines
7.8 KiB
C++
340 lines
7.8 KiB
C++
/****************************************************************************
|
|
*
|
|
* AVIMEM.C
|
|
*
|
|
* routine for putting a stream interface on top of data in memory
|
|
*
|
|
* Copyright (c) 1992 - 1995 Microsoft Corporation. All Rights Reserved.
|
|
*
|
|
* You have a royalty-free right to use, modify, reproduce and
|
|
* distribute the Sample Files (and/or any modified version) in
|
|
* any way you find useful, provided that you agree that
|
|
* Microsoft has no warranty obligations or liability for any
|
|
* Sample Application Files which are modified.
|
|
*
|
|
***************************************************************************/
|
|
|
|
#include <win32.h>
|
|
#include <vfw.h>
|
|
#include "avifilei.h"
|
|
#include "avimem.h"
|
|
|
|
#define WIDTHBYTES(i) ((UINT)((i+31)&(~31))/8)
|
|
#define DIBWIDTHBYTES(lpbi) (UINT)WIDTHBYTES((UINT)(lpbi)->biWidth * (UINT)(lpbi)->biBitCount)
|
|
|
|
STDAPI AVIMakeStreamFromClipboard(UINT cfFormat, HANDLE hGlobal, PAVISTREAM FAR *ppstream)
|
|
{
|
|
CAVIMemStream FAR* pAVIStream;
|
|
HRESULT hr;
|
|
LPVOID lp;
|
|
|
|
if (cfFormat != CF_DIB && cfFormat != CF_WAVE)
|
|
return ResultFromScode(AVIERR_UNSUPPORTED);
|
|
|
|
pAVIStream = new FAR CAVIMemStream();
|
|
if (!pAVIStream)
|
|
return ResultFromScode(E_OUTOFMEMORY);
|
|
|
|
lp = GlobalAllocPtr(GMEM_MOVEABLE, GlobalSize(hGlobal));
|
|
if (!lp)
|
|
return ResultFromScode(E_OUTOFMEMORY);
|
|
|
|
hmemcpy(lp, GlobalLock(hGlobal), GlobalSize(hGlobal));
|
|
|
|
pAVIStream->Create((LPARAM) cfFormat, (LPARAM) lp);
|
|
|
|
GlobalUnlock(hGlobal);
|
|
|
|
hr = pAVIStream->QueryInterface(IID_IAVIStream, (LPVOID FAR *) ppstream);
|
|
if (FAILED(GetScode(hr)))
|
|
delete pAVIStream;
|
|
return hr;
|
|
}
|
|
|
|
/* - - - - - - - - */
|
|
|
|
CAVIMemStream::CAVIMemStream()
|
|
{
|
|
m_lpData = NULL;
|
|
m_lpMemory = NULL;
|
|
m_lpFormat = NULL;
|
|
m_refs = 0;
|
|
}
|
|
|
|
/* - - - - - - - - */
|
|
|
|
STDMETHODIMP CAVIMemStream::QueryInterface(
|
|
const IID FAR& iid,
|
|
void FAR* FAR* ppv)
|
|
{
|
|
if (iid == IID_IUnknown)
|
|
*ppv = this;
|
|
else if (iid == IID_IAVIStream)
|
|
*ppv = this;
|
|
else {
|
|
*ppv = NULL;
|
|
return ResultFromScode(E_NOINTERFACE);
|
|
}
|
|
AddRef();
|
|
return AVIERR_OK;
|
|
}
|
|
|
|
/* - - - - - - - - */
|
|
|
|
STDMETHODIMP_(ULONG) CAVIMemStream::AddRef()
|
|
{
|
|
uUseCount++;
|
|
return ++m_refs;
|
|
}
|
|
|
|
|
|
/* - - - - - - - - */
|
|
|
|
STDMETHODIMP CAVIMemStream::Create(LPARAM lParam1, LPARAM lParam2)
|
|
{
|
|
UINT cfFormat = (UINT) lParam1;
|
|
m_lpMemory = (LPVOID) lParam2;
|
|
|
|
if (cfFormat == CF_DIB) {
|
|
LPBITMAPINFOHEADER lpbi;
|
|
|
|
m_lpFormat = m_lpMemory;
|
|
lpbi = (LPBITMAPINFOHEADER) m_lpFormat;
|
|
|
|
if (lpbi->biSizeImage == 0) {
|
|
if (lpbi->biCompression = BI_RGB) {
|
|
lpbi->biSizeImage = DIBWIDTHBYTES(lpbi) *
|
|
lpbi->biHeight;
|
|
}
|
|
}
|
|
|
|
_fmemset(&m_avistream, 0, sizeof(m_avistream));
|
|
m_avistream.fccType = streamtypeVIDEO;
|
|
m_avistream.fccHandler = 0;
|
|
m_avistream.dwStart = 0;
|
|
m_avistream.dwLength = 1;
|
|
m_avistream.dwScale = 1;
|
|
m_avistream.dwRate = 15;
|
|
m_avistream.dwSampleSize = 0;
|
|
SetRect(&m_avistream.rcFrame, 0, 0,
|
|
(int) lpbi->biWidth,
|
|
(int) lpbi->biHeight);
|
|
|
|
m_cbFormat = lpbi->biSize + lpbi->biClrUsed * sizeof(RGBQUAD);
|
|
m_lpData = (LPBYTE) m_lpMemory + m_cbFormat;
|
|
m_cbData = lpbi->biSizeImage;
|
|
} else if (cfFormat == CF_WAVE) {
|
|
DWORD _huge * lpdw;
|
|
LPWAVEFORMAT lpwf;
|
|
#define ckidWAVEFORMAT mmioFOURCC('f', 'm', 't', ' ')
|
|
#define ckidWAVEDATA mmioFOURCC('d', 'a', 't', 'a')
|
|
|
|
lpdw = (DWORD _huge *) ((LPBYTE) m_lpMemory + 12);
|
|
|
|
while (*lpdw != ckidWAVEFORMAT)
|
|
lpdw = (DWORD _huge *)
|
|
(((BYTE _huge *) lpdw) + lpdw[1] + sizeof(DWORD) * 2);
|
|
|
|
m_lpFormat = (LPBYTE) (lpdw + 2);
|
|
m_cbFormat = lpdw[1];
|
|
|
|
do {
|
|
lpdw = (DWORD _huge *)
|
|
(((BYTE _huge *) lpdw) + lpdw[1] + sizeof(DWORD) * 2);
|
|
} while (*lpdw != ckidWAVEDATA);
|
|
|
|
m_lpData = (LPBYTE) (lpdw + 2);
|
|
m_cbData = lpdw[1];
|
|
|
|
lpwf = (LPWAVEFORMAT) m_lpFormat;
|
|
|
|
_fmemset(&m_avistream, 0, sizeof(m_avistream));
|
|
m_avistream.fccType = streamtypeAUDIO;
|
|
m_avistream.fccHandler = 0;
|
|
m_avistream.dwStart = 0;
|
|
m_avistream.dwSampleSize = lpwf->nBlockAlign;
|
|
m_avistream.dwLength = m_cbData / m_avistream.dwSampleSize;
|
|
m_avistream.dwScale = lpwf->nBlockAlign;
|
|
m_avistream.dwRate = lpwf->nAvgBytesPerSec;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
STDMETHODIMP_(ULONG) CAVIMemStream::Release()
|
|
{
|
|
uUseCount--;
|
|
if (!--m_refs) {
|
|
if (m_lpMemory) {
|
|
GlobalFreePtr(m_lpMemory);
|
|
}
|
|
|
|
delete this;
|
|
return 0;
|
|
}
|
|
|
|
return m_refs;
|
|
}
|
|
|
|
|
|
STDMETHODIMP CAVIMemStream::Info(AVISTREAMINFOW FAR * psi, LONG lSize)
|
|
{
|
|
hmemcpy(psi, &m_avistream, min(lSize, sizeof(m_avistream)));
|
|
|
|
// return sizeof(m_avistream);
|
|
return ResultFromScode(0);
|
|
}
|
|
|
|
STDMETHODIMP CAVIMemStream::ReadFormat(LONG lPos, LPVOID lpFormat, LONG FAR *lpcbFormat)
|
|
{
|
|
if (lpFormat) {
|
|
hmemcpy(lpFormat, m_lpFormat, min(*lpcbFormat, (LONG) m_cbFormat));
|
|
}
|
|
|
|
*lpcbFormat = m_cbFormat;
|
|
return AVIERR_OK;
|
|
}
|
|
|
|
STDMETHODIMP CAVIMemStream::Read(
|
|
LONG lStart,
|
|
LONG lSamples,
|
|
LPVOID lpBuffer,
|
|
LONG cbBuffer,
|
|
LONG FAR * plBytes,
|
|
LONG FAR * plSamples)
|
|
{
|
|
// !!! CONVENIENT?
|
|
if (lStart + lSamples > (LONG) m_avistream.dwLength)
|
|
lSamples = (LONG) m_avistream.dwLength - lStart;
|
|
|
|
if (lSamples == 0 || lStart >= (LONG) m_avistream.dwLength) {
|
|
if (plBytes)
|
|
*plBytes = 0;
|
|
if (plSamples)
|
|
*plSamples = 0;
|
|
}
|
|
|
|
if (m_avistream.dwSampleSize) {
|
|
if (lSamples > 0)
|
|
lSamples = min(lSamples, cbBuffer / (LONG) m_avistream.dwSampleSize);
|
|
else
|
|
lSamples = cbBuffer / m_avistream.dwSampleSize;
|
|
|
|
if (plBytes)
|
|
*plBytes = lSamples * m_avistream.dwSampleSize;
|
|
|
|
if (plSamples)
|
|
*plSamples = lSamples;
|
|
|
|
if (lpBuffer) {
|
|
hmemcpy(lpBuffer,
|
|
(BYTE _huge *) m_lpData + lStart * m_avistream.dwSampleSize,
|
|
lSamples * m_avistream.dwSampleSize);
|
|
|
|
if (cbBuffer < (LONG) m_avistream.dwSampleSize)
|
|
return ResultFromScode(AVIERR_BUFFERTOOSMALL);
|
|
}
|
|
} else {
|
|
if (plBytes)
|
|
*plBytes = m_cbData;
|
|
|
|
if (plSamples)
|
|
*plSamples = 1;
|
|
if (lpBuffer) {
|
|
hmemcpy(lpBuffer, m_lpData, min(cbBuffer, m_cbData));
|
|
|
|
if (cbBuffer < m_cbData)
|
|
return ResultFromScode(AVIERR_BUFFERTOOSMALL);
|
|
}
|
|
}
|
|
|
|
return AVIERR_OK;
|
|
}
|
|
|
|
STDMETHODIMP_(LONG) CAVIMemStream::FindSample(LONG lPos, LONG lFlags)
|
|
{
|
|
if (lFlags & FIND_FORMAT) {
|
|
if (lFlags & FIND_PREV)
|
|
return 0;
|
|
else {
|
|
if (lPos > 0)
|
|
return -1;
|
|
else
|
|
return 0;
|
|
}
|
|
}
|
|
return lPos;
|
|
}
|
|
|
|
|
|
STDMETHODIMP CAVIMemStream::SetFormat(LONG lPos,LPVOID lpFormat,LONG cbFormat)
|
|
{
|
|
return ResultFromScode(AVIERR_UNSUPPORTED);
|
|
}
|
|
|
|
STDMETHODIMP CAVIMemStream::Write(LONG lStart,
|
|
LONG lSamples,
|
|
LPVOID lpBuffer,
|
|
LONG cbBuffer,
|
|
DWORD dwFlags,
|
|
LONG FAR *plSampWritten,
|
|
LONG FAR *plBytesWritten)
|
|
{
|
|
return ResultFromScode(AVIERR_UNSUPPORTED);
|
|
}
|
|
|
|
STDMETHODIMP CAVIMemStream::Delete(LONG lStart,LONG lSamples)
|
|
{
|
|
return ResultFromScode(AVIERR_UNSUPPORTED);
|
|
}
|
|
|
|
STDMETHODIMP CAVIMemStream::ReadData(DWORD fcc, LPVOID lp, LONG FAR *lpcb)
|
|
{
|
|
return ResultFromScode(AVIERR_UNSUPPORTED);
|
|
}
|
|
|
|
STDMETHODIMP CAVIMemStream::WriteData(DWORD fcc, LPVOID lp, LONG cb)
|
|
{
|
|
return ResultFromScode(AVIERR_UNSUPPORTED);
|
|
}
|
|
|
|
#if 0
|
|
STDMETHODIMP CAVIMemStream::Clone(PAVISTREAM FAR * ppaviNew)
|
|
{
|
|
return ResultFromScode(AVIERR_UNSUPPORTED);
|
|
}
|
|
|
|
#endif
|
|
|
|
#ifdef _WIN32
|
|
STDMETHODIMP CAVIMemStream::SetInfo(AVISTREAMINFOW FAR *lpInfo, LONG cbInfo)
|
|
{
|
|
return ResultFromScode(AVIERR_UNSUPPORTED);
|
|
}
|
|
#else
|
|
STDMETHODIMP CAVIMemStream::Reserved1(void)
|
|
{
|
|
return ResultFromScode(AVIERR_UNSUPPORTED);
|
|
}
|
|
|
|
STDMETHODIMP CAVIMemStream::Reserved2(void)
|
|
{
|
|
return ResultFromScode(AVIERR_UNSUPPORTED);
|
|
}
|
|
|
|
STDMETHODIMP CAVIMemStream::Reserved3(void)
|
|
{
|
|
return ResultFromScode(AVIERR_UNSUPPORTED);
|
|
}
|
|
|
|
STDMETHODIMP CAVIMemStream::Reserved4(void)
|
|
{
|
|
return ResultFromScode(AVIERR_UNSUPPORTED);
|
|
}
|
|
|
|
STDMETHODIMP CAVIMemStream::Reserved5(void)
|
|
{
|
|
return ResultFromScode(AVIERR_UNSUPPORTED);
|
|
}
|
|
#endif
|