Re: [PATCH (try 3) 2/2] dpvoice: Turn GetCompressionTypes into a semi-stub.

16 Jan 2015

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Am 2015-01-16 um 08:44 schrieb Alex Henrie:
...
Star Trek Armada II needs GetCompressionTypes to return at least 
one value, see https://bugs.winehq.org/show_bug.cgi?id=29238
Is the game happy if you return DV_OK and set *pdwNumElements = 0?
...
MS-PCM is guaranteed to be present on Windows XP, and it's already 
implemented in Wine, so advertising this codec shouldn't cause any 
trouble.
Even though we have the codec we probably don't have the dpvoice
infrastructure to hook up a dpvoice client to the codec, right? That's
not necessarily a reason to reject the semi-stub though.
...
+extern HRESULT DPVOICE_GetCompressionTypes(DVCOMPRESSIONINFO 
*pData, DWORD *pdwDataSize, DWORD *pdwNumElements, DWORD dwFlags) 
DECLSPEC_HIDDEN;
Please avoid hungarian notation names (dwThisIsAdWord, *pThisIsAPointer).
...
+        string_loc = (LPWSTR)((char*)pData + sizeof(pcm_type)); +
 memcpy(pData, &pcm_type, sizeof(pcm_type)); + memcpy(string_loc, 
pcm_name, sizeof(pcm_name)); + pData->lpszName = string_loc;
I think there should be a nicer way to do this. I didn't test this with
the compiler, but I guess you can do something like this:
struct
{
DVCOMPRESSIONINFO info;
const WCHAR name[];
}
codec =
{
{80, {0x8de12fd4,0x7cb3,0x48ce
{0xa7,0xe8,0x9c,0x47,0xa2,0x2e,0x8a,0xc5}}, &codec.name,
NULL, 0, 64000}},
{'M','S','-','P','C','M',' ','6','4',' ','k','b','i','t','/','s',0};
};

...

memcpy(pData, codec, sizeof(codec));

I don't know how well the variable-size array at the end of the struct
works. It also won't easily work for more than one element.

Re: [PATCH (try 3) 2/2] dpvoice: Turn GetCompressionTypes into a semi-stub.

Stefan Dösinger