Re2: Pushing up data through the stream in quartz

[Maarten Lankhorst]

Robert Shearman wrote:

> Maarten Lankhorst wrote:
>
>> HRESULT Capture_Run(CaptureBox * capBox, FILTER_STATE *state)
>> {
>>   HRESULT hr;
>>   IMediaSample *pSample = NULL;
>>   LPBYTE pointer;
>>   hr = OutputPin_GetDeliveryBuffer((OutputPin *)capBox->pOut, 
>> &pSample, NULL, NULL, 0);
>>   TRACE("Meat 1: %lx - %p\n", hr, pSample);
>>   hr = IMediaSample_GetPointer(pSample, &pointer);
>>   TRACE("Meat 2\n");
>>   IMediaSample_SetActualDataLength(pSample, 320*240*3);
>>   TRACE("Meat 3\n");
>>   ZeroMemory(pointer, 320*240*3);
>>   TRACE("Meat 4\n");
>>   OutputPin_SendSample((OutputPin *)capBox->pOut, pSample);
>>   FIXME("%p -> (%p) stub\n", capBox, state);
>>   return S_OK;
>> }
>>
>> I get E_VFW_NOT_COMMITTED after trying GetDeliveryBuffer, what's the 
>> cause?
>>
>
> This error is due to a memory allocator needing to be committed before 
> it can be used (see dlls/quartz/memallocator.c). You should call 
> IMemAllocator_Commit in the Run implementation of your filter and then 
> push one sample downstream. IIRC, you should also call 
> IMemAllocator_Decommit in the Stop implementation of your filter, but 
> this isn't done for the implementation I referred to 
> (dlls/quartz/transform.c).
>
> Rob
>
I added this line:
   hr = OutputPin_CommitAllocator((OutputPin *)capBox->pOut);

I get this error:
=>1 0x7b50326f StdMemAllocator_Alloc(iface=0x7d29bc80) 
[/usr/src/bld/wine-cur/dlls/quartz/memallocator.c:792] in quartz 
(0x77a9dee8)
  2 0x7b501e56 BaseMemAllocator_Commit+0x186(iface=0x7d29bc80) 
[/usr/src/bld/wine-cur/dlls/quartz/memallocator.c:258] in quartz 
(0x77a9df18)
  3 0x7b5073ca OutputPin_CommitAllocator+0xca(This=0x7d29b928) 
[/usr/src/bld/wine-cur/dlls/quartz/pin.c:937] in quartz (0x77a9df44)
...
Unhandled exception: divide by zero in 32-bit code (0x7b50326f).
trace:quartz:BaseMemAllocator_Commit using alloc at 0x7b503230

The offending line:
    if ((si.dwPageSize % This->base.pProps->cbAlign) != 0)