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winmm: Added a FIXME for truncated device names.

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This commit is contained in:
Ryan C. Gordon 2016-08-06 23:05:02 -04:00
parent 51d1523380
commit ff7df7e687
1 changed files with 15 additions and 0 deletions
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15
src/audio/winmm/SDL_winmm.c
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@ -37,6 +37,21 @@
#define WAVE_FORMAT_IEEE_FLOAT 0x0003 #define WAVE_FORMAT_IEEE_FLOAT 0x0003
#endif #endif
/* !!! FIXME:
WAVExxxCAPS gives you 31 bytes for the device name, and just truncates if it's
longer. However, since WinXP, you can use the WAVExxxCAPS2 structure, which
will give you a name GUID. The full name is in the Windows Registry under
that GUID, located here: HKLM\System\CurrentControlSet\Control\MediaCategories
Note that drivers can report GUID_NULL for the name GUID, in which case,
Windows makes a best effort to fill in those 31 bytes in the usual place.
This info summarized from MSDN:
http://web.archive.org/web/20131027093034/http://msdn.microsoft.com/en-us/library/windows/hardware/ff536382(v=vs.85).aspx
*/
#define DETECT_DEV_IMPL(iscap, typ, capstyp) \ #define DETECT_DEV_IMPL(iscap, typ, capstyp) \
static void DetectWave##typ##Devs(void) { \ static void DetectWave##typ##Devs(void) { \
const UINT iscapture = iscap ? 1 : 0; \ const UINT iscapture = iscap ? 1 : 0; \