Robert Shearman wrote:
Maarten Lankhorst wrote:
I'm having troubles sending a media sample over the graph,
I'm wondering wether that is because of the receiving filter or my own fault.
the thing I'm trying to send is a uncompressed 24 bit image, the bitmap info header data of it is pretty much as this:
mediatype: BI_RGB24 Width: 320 Height: 240 Bitcount: 24 Size of the image in bytes: 230400 compression: BI_RGB
so my questions about it are: - What should I do with the ALLOCATOR_PROPERTIES
props.cbAlign - do you have any alignment requirements? if not, set to 1.
props.cbPrefix - do you have any private data you want to include before the sample? if not, set to 0.
props.cbBuffer - maximum size of the buffer (recommended is 0x20000 or 64kb)
props.cBuffers - how many samples will you be processing at once?
I allocated 4 buffers of 64kB now to hold the sample, it's probably more friendly then 1 buffer of 230kB
- What do I have to put in IMediaSample SetActualDataLength
The value corresponding to "Size of the image in bytes."
Had that, turned out it wasn't the reason I got an invalid error
I tried using the graph edit tool from Graph Edit, connected my outputpin to videorenderer's input pin I got this:- How can I fill the pointer returned by IMediaSample GetPointer so that the sample gets accepted?
The media sample contains no format information so it shouldn't be rejected. Just memcpy the bytes.
Rob
trace:quartz:VideoRenderer_SendSampleData 0x77ca8108 0x7cfd0000 131072
trace:quartz:IPinImpl_ConnectionMediaType (0x77ca8268/0x77ca8268)->(0x77a9f8f8)
trace:quartz:VideoRenderer_SendSampleData biSize = 298763094
trace:quartz:VideoRenderer_SendSampleData biWidth = -1442840129
trace:quartz:VideoRenderer_SendSampleData biHeigth = 1515803904
trace:quartz:VideoRenderer_SendSampleData biPlanes = 64268
trace:quartz:VideoRenderer_SendSampleData biBitCount = 30633
trace:quartz:VideoRenderer_SendSampleData biCompression = "X\x00\x00\x00"...
trace:quartz:VideoRenderer_SendSampleData biSizeImage = 2009760832
Somehow my media format got messed up, I'll look at the source, figure out what I did wrong then return working on this happily, I bet it's the same reason msn returned E_FAIL :)
*Takes another deep look into his probably messed up code, does this mean I have to rewrite it earlier then I thought? O_O*
