Wine GStreamer Bridge

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Plan

• Create simple commandline Player DONE

  • simple RenderFile version DONE

  • simple manually built graph version DONE

• Create a gstwrapper
  • same idea as acmwrapper - only uses gstreamer instead of acm

  • gets basic gstreamer input->gstreamerdecode->output working

• More coming soon...

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GStreamer/DirectShow Counterparts

typedef struct _AMMediaType {

• GUID majortype;
• GUID subtype;
• BOOL bFixedSizeSamples;
• BOOL bTemporalCompression;
• ULONG lSampleSize;
• GUID formattype;
• IUnknown * pUnk;
• ULONG cbFormat;
• [size_is(cbFormat)] BYTE * pbFormat;

} AM_MEDIA_TYPE;

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Code

A simple command line player that just uses RenderFile to build graph. download
A command line player for mp3 with graph built manually. download

GIT Repos

Building

32-bit Gstreamer

• Fedora 10/11
  • git clone git://anongit.freedesktop.org/gstreamer/gstreamer
  • git clone git://anongit.freedesktop.org/gstreamer/gst-plugins-base
  • git clone git://anongit.freedesktop.org/gstreamer/gst-plugins-good
  • PKG_CONFIG_PATH=/usr/lib/pkgconfig/ CFLAGS="-m32 -Wno-error" CXXFLAGS="-m32 -Wno-error" ./autogen.sh --build=i686-pc-linux-gnu --disable-gtk-doc
    • should work for most systems
  • make
  • (optional depending on you setup) make install

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Links

Gstreamer Directshow Wrappers (we are doing the opposite )

• GStreamer DirectShow Decoder Wrapper

• GStreamer DirectShow Src Wrapper

• GStreamer DirectShow Videosink Wrapper

• pitfdll? might have something

MSDN

• DirectShow Reference

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Issues

• 64 host + 32 bit wine

  • May be some issues with 32 bit gstreamer being installed in parallel with 64 bit

  • Don't believe this to be a much of an issue now....so long as build enviroment is correct
• is directshow happy to allow a single element to do multiple jobs (ie. demuxing, decoding )
• can decodebin be used to feed raw mp3 (or video) data and retrieve the raw audio samples and/or video on the output pins

• IGraphBuilder - seems to not want to connect two pins (crashes). Internal code uses IPin_Connect

  • user error
• Using graph builder sometimes can't connect to dsound renderer while a bit later you can...

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Schedule