164 lines
4.5 KiB
C
164 lines
4.5 KiB
C
/* Copyright (c) 1997 Microsoft Corporation. All Rights Reserved. */
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#include "foxbear.h"
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BOOL bMovie;
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BOOL bCamera;
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WCHAR wszMovie[100];
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#define RELEASE(x) if ((x) != NULL) (x)->lpVtbl->Release(x);
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#ifdef DEBUG
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HRESULT __inline check_error(HRESULT hr, LPSTR psz)
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{
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if (FAILED(hr)) {
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char sz[200];
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wsprintf(sz, "%s failed code 0x%8.8X\n", psz, hr);
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OutputDebugString(sz);
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}
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return hr;
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}
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#else
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HRESULT __inline check_error(HRESULT hr, LPSTR psz)
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{
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UNREFERENCED_PARAMETER(psz);
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return hr;
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}
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#endif
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#define CHECK_ERROR(x) if (FAILED(hr = check_error(x, #x))) goto Exit;
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HRESULT FindCaptureDevice(IMoniker **ppMoniker)
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{
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ICreateDevEnum *pCreateDevEnum;
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IEnumMoniker *pEm;
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ULONG cFetched;
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HRESULT hr = CoCreateInstance(
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&CLSID_SystemDeviceEnum,
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NULL,
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CLSCTX_INPROC_SERVER,
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&IID_ICreateDevEnum,
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(void**)&pCreateDevEnum);
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if (FAILED(hr))
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return hr;
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hr = ICreateDevEnum_CreateClassEnumerator(pCreateDevEnum,
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&CLSID_CVidCapClassManager,
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&pEm,
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0);
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ICreateDevEnum_Release(pCreateDevEnum);
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if (FAILED(hr)) {
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return hr;
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}
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hr = IEnumMoniker_Next(pEm, 1, ppMoniker, &cFetched);
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IEnumMoniker_Release(pEm);
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return S_OK == hr ? hr : E_FAIL;
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}
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BOOL CreateVideoSource(IDirectDrawStreamSample **ppVideoSource, WCHAR * szFileName)
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{
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HRESULT hr;
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IAMMultiMediaStream *pAMStream = NULL;
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IMediaStream *pVideoStream = NULL;
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IDirectDrawMediaStream *pDDVideoStream = NULL;
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IDirectDrawSurface *pSurface = NULL;
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IMoniker *pMoniker = NULL;
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IDirectDrawPalette *pPalette = NULL;
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IBindCtx *pCtx = NULL;
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DDSURFACEDESC ddsd;
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CHECK_ERROR(CoCreateInstance(&CLSID_AMMultiMediaStream, NULL, CLSCTX_INPROC_SERVER,
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&IID_IAMMultiMediaStream, (void **)&pAMStream));
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CHECK_ERROR(IAMMultiMediaStream_Initialize(pAMStream, STREAMTYPE_READ, 0, NULL));
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CHECK_ERROR(IAMMultiMediaStream_AddMediaStream(pAMStream, (IUnknown*)lpDD, &MSPID_PrimaryVideo, 0, &pVideoStream));
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CHECK_ERROR(IAMMultiMediaStream_AddMediaStream(pAMStream, NULL, &MSPID_PrimaryAudio, AMMSF_ADDDEFAULTRENDERER, NULL));
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if (bCamera) {
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CreateBindCtx(0, &pCtx);
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CHECK_ERROR(FindCaptureDevice(&pMoniker));
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CHECK_ERROR(IAMMultiMediaStream_OpenMoniker(
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pAMStream, pCtx, pMoniker, AMMSF_RENDERTOEXISTING));
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} else {
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CHECK_ERROR(IAMMultiMediaStream_OpenFile(
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pAMStream, bMovie ? wszMovie : szFileName, AMMSF_RENDERTOEXISTING));
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}
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CHECK_ERROR(IMediaStream_QueryInterface(pVideoStream, &IID_IDirectDrawMediaStream, (void **)&pDDVideoStream));
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ddsd.dwSize = sizeof(ddsd);
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CHECK_ERROR(IDirectDrawMediaStream_GetFormat(pDDVideoStream, &ddsd, NULL, NULL, NULL));
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pSurface = DDCreateSurface(ddsd.dwWidth, ddsd.dwHeight, FALSE, TRUE);
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hr = IDirectDrawSurface_GetPalette(lpFrontBuffer, &pPalette);
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if (SUCCEEDED(hr)) {
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CHECK_ERROR(IDirectDrawSurface_SetPalette(pSurface, pPalette));
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}
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CHECK_ERROR(IDirectDrawMediaStream_CreateSample(pDDVideoStream, pSurface, NULL, DDSFF_PROGRESSIVERENDER, ppVideoSource));
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CHECK_ERROR(IAMMultiMediaStream_SetState(pAMStream, STREAMSTATE_RUN));
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CHECK_ERROR(IDirectDrawStreamSample_Update(*ppVideoSource, SSUPDATE_ASYNC | SSUPDATE_CONTINUOUS, NULL, NULL, 0));
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Exit:
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RELEASE(pAMStream);
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RELEASE(pVideoStream);
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RELEASE(pDDVideoStream);
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RELEASE(pSurface);
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RELEASE(pMoniker);
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RELEASE(pPalette);
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RELEASE(pCtx);
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return hr == S_OK ? TRUE : FALSE;
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}
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BOOL DisplayVideoSource(IDirectDrawStreamSample *pVideoSource)
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{
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if (pVideoSource) {
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RECT rc;
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IDirectDrawSurface *pSurface;
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HRESULT CompStatus = IDirectDrawStreamSample_CompletionStatus(pVideoSource, COMPSTAT_NOUPDATEOK | COMPSTAT_WAIT, INFINITE);
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if (SUCCEEDED(CompStatus)) {
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HRESULT hr = IDirectDrawStreamSample_GetSurface(pVideoSource, &pSurface, &rc);
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if (hr == S_OK) {
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IDirectDrawSurface_BltFast(lpBackBuffer, 240, 180,
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pSurface, &rc, DDBLTFAST_SRCCOLORKEY | DDBLTFAST_WAIT);
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IDirectDrawSurface_Release(pSurface);
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}
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}
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if (CompStatus == MS_S_ENDOFSTREAM) {
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IMediaStream *pStream;
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IMultiMediaStream *pMMStream;
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IDirectDrawStreamSample_GetMediaStream(pVideoSource, &pStream);
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IMediaStream_GetMultiMediaStream(pStream, &pMMStream);
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IMultiMediaStream_Seek(pMMStream, 0);
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IMediaStream_Release(pStream);
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IMultiMediaStream_Release(pMMStream);
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}
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IDirectDrawStreamSample_Update(pVideoSource, SSUPDATE_ASYNC | SSUPDATE_CONTINUOUS, NULL, NULL, 0);
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return TRUE;
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} else {
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return FALSE;
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}
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}
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