api.c

winNT技术操作系统,国外开放的原代码和LIUX一样

ULONG WINAPI AVIStreamAddRef(PAVISTREAM pstream)
{
  TRACE("(%p)\n", pstream);

  if (pstream == NULL) {
    ERR(": bad handle passed!\n");
    return 0;
  }

  return IAVIStream_AddRef(pstream);
}

/***********************************************************************
 *		AVIStreamRelease	(AVIFIL32.@)
 *		AVIStreamRelease	(AVIFILE.161)
 */
ULONG WINAPI AVIStreamRelease(PAVISTREAM pstream)
{
  TRACE("(%p)\n", pstream);

  if (pstream == NULL) {
    ERR(": bad handle passed!\n");
    return 0;
  }

  return IAVIStream_Release(pstream);
}

/***********************************************************************
 *		AVIStreamCreate		(AVIFIL32.@)
 *		AVIStreamCreate		(AVIFILE.104)
 */
HRESULT WINAPI AVIStreamCreate(PAVISTREAM *ppavi, LONG lParam1, LONG lParam2,
			       LPCLSID pclsidHandler)
{
  HRESULT hr;

  TRACE("(%p,0x%08X,0x%08X,%s)\n", ppavi, lParam1, lParam2,
	debugstr_guid(pclsidHandler));

  if (ppavi == NULL)
    return AVIERR_BADPARAM;

  *ppavi = NULL;
  if (pclsidHandler == NULL)
    return AVIERR_UNSUPPORTED;

  hr = CoCreateInstance(pclsidHandler, NULL, CLSCTX_INPROC, &IID_IAVIStream, (LPVOID*)ppavi);
  if (FAILED(hr) || *ppavi == NULL)
    return hr;

  hr = IAVIStream_Create(*ppavi, lParam1, lParam2);
  if (FAILED(hr)) {
    IAVIStream_Release(*ppavi);
    *ppavi = NULL;
  }

  return hr;
}

/***********************************************************************
 *		AVIStreamInfo		(AVIFIL32.@)
 *		AVIStreamInfoA		(AVIFIL32.@)
 *		AVIStreamInfo		(AVIFILE.162)
 */
HRESULT WINAPI AVIStreamInfoA(PAVISTREAM pstream, LPAVISTREAMINFOA asi,
			      LONG size)
{
  AVISTREAMINFOW asiw;
  HRESULT	 hres;

  TRACE("(%p,%p,%d)\n", pstream, asi, size);

  if (pstream == NULL)
    return AVIERR_BADHANDLE;
  if ((DWORD)size < sizeof(AVISTREAMINFOA))
    return AVIERR_BADSIZE;

  hres = IAVIStream_Info(pstream, &asiw, sizeof(asiw));

  memcpy(asi, &asiw, sizeof(asiw) - sizeof(asiw.szName));
  WideCharToMultiByte(CP_ACP, 0, asiw.szName, -1, asi->szName,
		      sizeof(asi->szName), NULL, NULL);
  asi->szName[sizeof(asi->szName) - 1] = 0;

  return hres;
}

/***********************************************************************
 *		AVIStreamInfoW		(AVIFIL32.@)
 */
HRESULT WINAPI AVIStreamInfoW(PAVISTREAM pstream, LPAVISTREAMINFOW asi,
			      LONG size)
{
  TRACE("(%p,%p,%d)\n", pstream, asi, size);

  if (pstream == NULL)
    return AVIERR_BADHANDLE;

  return IAVIStream_Info(pstream, asi, size);
}

/***********************************************************************
 *		AVIStreamFindSample	(AVIFIL32.@)
 *		AVIStreamFindSample	(AVIFILE.163)
 */
HRESULT WINAPI AVIStreamFindSample(PAVISTREAM pstream, LONG pos, DWORD flags)
{
  TRACE("(%p,%d,0x%X)\n", pstream, pos, flags);

  if (pstream == NULL)
    return -1;

  return IAVIStream_FindSample(pstream, pos, flags);
}

/***********************************************************************
 *		AVIStreamReadFormat	(AVIFIL32.@)
 *		AVIStreamReadFormat	(AVIFILE.164)
 */
HRESULT WINAPI AVIStreamReadFormat(PAVISTREAM pstream, LONG pos,
				   LPVOID format, LPLONG formatsize)
{
  TRACE("(%p,%d,%p,%p)\n", pstream, pos, format, formatsize);

  if (pstream == NULL)
    return AVIERR_BADHANDLE;

  return IAVIStream_ReadFormat(pstream, pos, format, formatsize);
}

/***********************************************************************
 *		AVIStreamSetFormat	(AVIFIL32.@)
 *		AVIStreamSetFormat	(AVIFILE.169)
 */
HRESULT WINAPI AVIStreamSetFormat(PAVISTREAM pstream, LONG pos,
				  LPVOID format, LONG formatsize)
{
  TRACE("(%p,%d,%p,%d)\n", pstream, pos, format, formatsize);

  if (pstream == NULL)
    return AVIERR_BADHANDLE;

  return IAVIStream_SetFormat(pstream, pos, format, formatsize);
}

/***********************************************************************
 *		AVIStreamRead		(AVIFIL32.@)
 *		AVIStreamRead		(AVIFILE.167)
 */
HRESULT WINAPI AVIStreamRead(PAVISTREAM pstream, LONG start, LONG samples,
			     LPVOID buffer, LONG buffersize,
			     LPLONG bytesread, LPLONG samplesread)
{
  TRACE("(%p,%d,%d,%p,%d,%p,%p)\n", pstream, start, samples, buffer,
	buffersize, bytesread, samplesread);

  if (pstream == NULL)
    return AVIERR_BADHANDLE;

  return IAVIStream_Read(pstream, start, samples, buffer, buffersize,
			 bytesread, samplesread);
}

/***********************************************************************
 *		AVIStreamWrite		(AVIFIL32.@)
 *		AVIStreamWrite		(AVIFILE.168)
 */
HRESULT WINAPI AVIStreamWrite(PAVISTREAM pstream, LONG start, LONG samples,
			      LPVOID buffer, LONG buffersize, DWORD flags,
			      LPLONG sampwritten, LPLONG byteswritten)
{
  TRACE("(%p,%d,%d,%p,%d,0x%X,%p,%p)\n", pstream, start, samples, buffer,
	buffersize, flags, sampwritten, byteswritten);

  if (pstream == NULL)
    return AVIERR_BADHANDLE;

  return IAVIStream_Write(pstream, start, samples, buffer, buffersize,
			  flags, sampwritten, byteswritten);
}

/***********************************************************************
 *		AVIStreamReadData	(AVIFIL32.@)
 *		AVIStreamReadData	(AVIFILE.165)
 */
HRESULT WINAPI AVIStreamReadData(PAVISTREAM pstream, DWORD fcc, LPVOID lp,
				 LPLONG lpread)
{
  TRACE("(%p,'%4.4s',%p,%p)\n", pstream, (char*)&fcc, lp, lpread);

  if (pstream == NULL)
    return AVIERR_BADHANDLE;

  return IAVIStream_ReadData(pstream, fcc, lp, lpread);
}

/***********************************************************************
 *		AVIStreamWriteData	(AVIFIL32.@)
 *		AVIStreamWriteData	(AVIFILE.166)
 */
HRESULT WINAPI AVIStreamWriteData(PAVISTREAM pstream, DWORD fcc, LPVOID lp,
				  LONG size)
{
  TRACE("(%p,'%4.4s',%p,%d)\n", pstream, (char*)&fcc, lp, size);

  if (pstream == NULL)
    return AVIERR_BADHANDLE;

  return IAVIStream_WriteData(pstream, fcc, lp, size);
}

/***********************************************************************
 *		AVIStreamGetFrameOpen	(AVIFIL32.@)
 *		AVIStreamGetFrameOpen	(AVIFILE.112)
 */
PGETFRAME WINAPI AVIStreamGetFrameOpen(PAVISTREAM pstream,
				       LPBITMAPINFOHEADER lpbiWanted)
{
  PGETFRAME pg = NULL;

  TRACE("(%p,%p)\n", pstream, lpbiWanted);

  if (FAILED(IAVIStream_QueryInterface(pstream, &IID_IGetFrame, (LPVOID*)&pg)) ||
      pg == NULL) {
    pg = AVIFILE_CreateGetFrame(pstream);
    if (pg == NULL)
      return NULL;
  }

  if (FAILED(IGetFrame_SetFormat(pg, lpbiWanted, NULL, 0, 0, -1, -1))) {
    IGetFrame_Release(pg);
    return NULL;
  }

  return pg;
}

/***********************************************************************
 *		AVIStreamGetFrame	(AVIFIL32.@)
 *		AVIStreamGetFrame	(AVIFILE.110)
 */
LPVOID WINAPI AVIStreamGetFrame(PGETFRAME pg, LONG pos)
{
  TRACE("(%p,%d)\n", pg, pos);

  if (pg == NULL)
    return NULL;

  return IGetFrame_GetFrame(pg, pos);
}

/***********************************************************************
 *		AVIStreamGetFrameClose	(AVIFIL32.@)
 *		AVIStreamGetFrameClose	(AVIFILE.111)
 */
HRESULT WINAPI AVIStreamGetFrameClose(PGETFRAME pg)
{
  TRACE("(%p)\n", pg);

  if (pg != NULL)
    return IGetFrame_Release(pg);
  return 0;
}

/***********************************************************************
 *		AVIMakeCompressedStream	(AVIFIL32.@)
 */
HRESULT WINAPI AVIMakeCompressedStream(PAVISTREAM *ppsCompressed,
				       PAVISTREAM psSource,
				       LPAVICOMPRESSOPTIONS aco,
				       LPCLSID pclsidHandler)
{
  AVISTREAMINFOW asiw;
  CHAR           szRegKey[25];
  CHAR           szValue[100];
  CLSID          clsidHandler;
  HRESULT        hr;
  LONG           size = sizeof(szValue);

  TRACE("(%p,%p,%p,%s)\n", ppsCompressed, psSource, aco,
	debugstr_guid(pclsidHandler));

  if (ppsCompressed == NULL)
    return AVIERR_BADPARAM;
  if (psSource == NULL)
    return AVIERR_BADHANDLE;

  *ppsCompressed = NULL;

  /* if no handler given get default ones based on streamtype */
  if (pclsidHandler == NULL) {
    hr = IAVIStream_Info(psSource, &asiw, sizeof(asiw));
    if (FAILED(hr))
      return hr;

    wsprintfA(szRegKey, "AVIFile\\Compressors\\%4.4s", (char*)&asiw.fccType);
    if (RegQueryValueA(HKEY_CLASSES_ROOT, szRegKey, szValue, &size) != ERROR_SUCCESS)
      return AVIERR_UNSUPPORTED;
    if (AVIFILE_CLSIDFromString(szValue, &clsidHandler) != S_OK)
      return AVIERR_UNSUPPORTED;
  } else
    memcpy(&clsidHandler, pclsidHandler, sizeof(clsidHandler));

  hr = CoCreateInstance(&clsidHandler, NULL, CLSCTX_INPROC, &IID_IAVIStream, (LPVOID*)ppsCompressed);
  if (FAILED(hr) || *ppsCompressed == NULL)
    return hr;

  hr = IAVIStream_Create(*ppsCompressed, (LPARAM)psSource, (LPARAM)aco);
  if (FAILED(hr)) {
    IAVIStream_Release(*ppsCompressed);
    *ppsCompressed = NULL;
  }

  return hr;
}

/***********************************************************************
 *		AVIMakeFileFromStreams	(AVIFIL32.@)
 */
HRESULT WINAPI AVIMakeFileFromStreams(PAVIFILE *ppfile, int nStreams,
				      PAVISTREAM *ppStreams)
{
  TRACE("(%p,%d,%p)\n", ppfile, nStreams, ppStreams);

  if (nStreams < 0 || ppfile == NULL || ppStreams == NULL)
    return AVIERR_BADPARAM;

  *ppfile = AVIFILE_CreateAVITempFile(nStreams, ppStreams);
  if (*ppfile == NULL)
    return AVIERR_MEMORY;

  return AVIERR_OK;
}

/***********************************************************************
 *		AVIStreamOpenFromFile	(AVIFIL32.@)
 *		AVIStreamOpenFromFileA	(AVIFIL32.@)
 *		AVIStreamOpenFromFile   (AVIFILE.103)
 */
HRESULT WINAPI AVIStreamOpenFromFileA(PAVISTREAM *ppavi, LPCSTR szFile,
				      DWORD fccType, LONG lParam,
				      UINT mode, LPCLSID pclsidHandler)
{
  PAVIFILE pfile = NULL;
  HRESULT  hr;

  TRACE("(%p,%s,'%4.4s',%d,0x%X,%s)\n", ppavi, debugstr_a(szFile),
	(char*)&fccType, lParam, mode, debugstr_guid(pclsidHandler));

  if (ppavi == NULL || szFile == NULL)
    return AVIERR_BADPARAM;

  *ppavi = NULL;

  hr = AVIFileOpenA(&pfile, szFile, mode, pclsidHandler);
  if (FAILED(hr) || pfile == NULL)
    return hr;

  hr = IAVIFile_GetStream(pfile, ppavi, fccType, lParam);
  IAVIFile_Release(pfile);

  return hr;
}

/***********************************************************************
 *		AVIStreamOpenFromFileW	(AVIFIL32.@)
 */
HRESULT WINAPI AVIStreamOpenFromFileW(PAVISTREAM *ppavi, LPCWSTR szFile,
				      DWORD fccType, LONG lParam,
				      UINT mode, LPCLSID pclsidHandler)
{
  PAVIFILE pfile = NULL;
  HRESULT  hr;

  TRACE("(%p,%s,'%4.4s',%d,0x%X,%s)\n", ppavi, debugstr_w(szFile),
	(char*)&fccType, lParam, mode, debugstr_guid(pclsidHandler));

  if (ppavi == NULL || szFile == NULL)
    return AVIERR_BADPARAM;

  *ppavi = NULL;

  hr = AVIFileOpenW(&pfile, szFile, mode, pclsidHandler);
  if (FAILED(hr) || pfile == NULL)
    return hr;

  hr = IAVIFile_GetStream(pfile, ppavi, fccType, lParam);
  IAVIFile_Release(pfile);

  return hr;
}

/***********************************************************************
 *		AVIStreamBeginStreaming	(AVIFIL32.@)
 */
LONG WINAPI AVIStreamBeginStreaming(PAVISTREAM pavi, LONG lStart, LONG lEnd, LONG lRate)
{
  IAVIStreaming* pstream = NULL;
  HRESULT hr;

  TRACE("(%p,%d,%d,%d)\n", pavi, lStart, lEnd, lRate);

  if (pavi == NULL)
    return AVIERR_BADHANDLE;

  hr = IAVIStream_QueryInterface(pavi, &IID_IAVIStreaming, (LPVOID*)&pstream);
  if (SUCCEEDED(hr) && pstream != NULL) {
    hr = IAVIStreaming_Begin(pstream, lStart, lEnd, lRate);
    IAVIStreaming_Release(pstream);
  } else
    hr = AVIERR_OK;

  return hr;
}

/***********************************************************************
 *		AVIStreamEndStreaming	(AVIFIL32.@)
 */
LONG WINAPI AVIStreamEndStreaming(PAVISTREAM pavi)
{
  IAVIStreaming* pstream = NULL;
  HRESULT hr;

  TRACE("(%p)\n", pavi);

  hr = IAVIStream_QueryInterface(pavi, &IID_IAVIStreaming, (LPVOID*)&pstream);
  if (SUCCEEDED(hr) && pstream != NULL) {
    IAVIStreaming_End(pstream);
    IAVIStreaming_Release(pstream);
  }

 return AVIERR_OK;
}

/***********************************************************************
 *		AVIStreamStart		(AVIFILE.130)
 *		AVIStreamStart		(AVIFIL32.@)
 */
LONG WINAPI AVIStreamStart(PAVISTREAM pstream)
{
  AVISTREAMINFOW asiw;

  TRACE("(%p)\n", pstream);

  if (pstream == NULL)
    return 0;