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#ifndef NULLSOFT_OUTPUTSTREAMH
#define NULLSOFT_OUTPUTSTREAMH
#include <wmsdk.h>
#define NULLSOFT_INTERFACE_BEGIN(RIID, OBJ) void **&NULLSOFT_interfaceHolder = OBJ; REFIID NULLSOFT_IID = RIID;
#define NULLSOFT_VALID_INTERFACE(a) if (NULLSOFT_IID == IID_ ## a) { *NULLSOFT_interfaceHolder = static_cast<a *>(this); return S_OK; }
#define NULLSOFT_INTERFACE_END() *NULLSOFT_interfaceHolder = 0; return E_NOINTERFACE;
class OutputStream : public IWMOutputMediaProps
{
public:
OutputStream(IWMMediaProps *props) : mediaType(0)
{
DWORD mediaTypeSize;
props->GetMediaType(0, &mediaTypeSize);
if (mediaTypeSize)
{
mediaType = (WM_MEDIA_TYPE *)new unsigned char[mediaTypeSize];
props->GetMediaType(mediaType, &mediaTypeSize);
}
}
~OutputStream()
{
if (mediaType)
{
delete mediaType;
mediaType = 0;
}
}
GUID &GetSubType() const
{
return mediaType->subtype;
}
WM_MEDIA_TYPE *mediaType;
HRESULT STDMETHODCALLTYPE QueryInterface(REFIID riid, void **ppvObject)
{
NULLSOFT_INTERFACE_BEGIN(riid, ppvObject)
NULLSOFT_VALID_INTERFACE(IWMOutputMediaProps);
NULLSOFT_VALID_INTERFACE(IWMMediaProps);
NULLSOFT_INTERFACE_END()
}
ULONG STDMETHODCALLTYPE AddRef()
{
return 0;
}
ULONG STDMETHODCALLTYPE Release()
{
return 0;
}
HRESULT STDMETHODCALLTYPE GetType(GUID *pguidType)
{
if (!mediaType) return E_FAIL;
*pguidType = mediaType->majortype;
return S_OK;
}
HRESULT STDMETHODCALLTYPE GetMediaType(WM_MEDIA_TYPE *pType, DWORD *pcbType)
{
if (!mediaType) return E_FAIL;
if (!pType)
{
if (!pcbType) return E_INVALIDARG;
*pcbType = sizeof(WM_MEDIA_TYPE);
}
else
{
if (*pcbType < sizeof(WM_MEDIA_TYPE)) ASF_E_BUFFERTOOSMALL;
memcpy(pType, mediaType, sizeof(WM_MEDIA_TYPE));
}
return S_OK;
}
HRESULT STDMETHODCALLTYPE SetMediaType(WM_MEDIA_TYPE *pType)
{
return E_NOTIMPL;
}
HRESULT STDMETHODCALLTYPE GetStreamGroupName(WCHAR *pwszName, WORD *pcchName)
{
return E_NOTIMPL;
}
HRESULT STDMETHODCALLTYPE GetConnectionName(WCHAR *pwszName, WORD *pcchName)
{
return E_NOTIMPL;
}
};
#include <uuids.h>
class VideoOutputStream : public OutputStream
{
public:
VideoOutputStream(IWMMediaProps *props) : OutputStream(props)
{}
WMVIDEOINFOHEADER *VideoInfo() const
{
return (WMVIDEOINFOHEADER *)mediaType->pbFormat;
}
int SourceWidth() const
{
return VideoInfo()->rcSource.right - VideoInfo()->rcSource.left;
}
int DestinationWidth() const
{
return VideoInfo()->rcTarget.right - VideoInfo()->rcTarget.left;
}
int DestinationHeight() const
{
return VideoInfo()->rcTarget.bottom - VideoInfo()->rcTarget.top;
}
bool Flipped() const
{
BITMAPINFOHEADER &info = VideoInfo()->bmiHeader;
if (info.biHeight < 0 || info.biCompression == 0)
return true;
else
return false;
}
int bmiHeight()
{
return VideoInfo()->bmiHeader.biYPelsPerMeter;
}
int bmiWidth()
{
return VideoInfo()->bmiHeader.biXPelsPerMeter;
}
RGBQUAD *CreatePalette()
{
RGBQUAD *palette = (RGBQUAD *)calloc(1, 1024);
BITMAPINFOHEADER &info = VideoInfo()->bmiHeader;
memcpy(palette, (char *)(&info) + 40, info.biClrUsed * 4);
return palette;
}
int FourCC() const
{
BITMAPINFOHEADER &info = VideoInfo()->bmiHeader;
int fourcc = info.biCompression;
if (fourcc == BI_RGB)
{
switch(info.biBitCount)
{
case 32:
fourcc='23GR'; // RG32
break;
case 24:
fourcc='42GR'; // RG24
break;
case 8:
fourcc='8BGR'; // RGB8
break;
}
} else if (fourcc == BI_BITFIELDS)
fourcc = 0; // TODO: calc a CC that winamp likes
return fourcc;
}
bool IsVideo() const
{
return !!(mediaType->formattype == WMFORMAT_VideoInfo);
}
};
#endif
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