> It was calling `OnClockStart`, but it turns out that was because I had hard-coded the value in my `MESourceStarted` and `MEStreamStarted` events. After changing these events to instead use `pvarStartPosition` passed in `IMFMediaSource::Start`, I get:
>
> ```
> 1330.024952|10088|source_mock_Start: format: {00000000-0000-0000-0000-000000000000} (GUID_NULL) position: <EMPTY>
> 1330.025598|10088|clock_sink_OnClockRestart: system time 13300255028
> ```
>
> So sending those events with a hard-coded `VT_I8` value of zero caused `OnClockStart` to be called, but now those events have a value of `VT_EMPTY` and `OnClockRestart` is called.
I see, this is something we do differently. We are using original session Start() timestamp when restarting the clock, and Windows apparently is using whatever source reports. I think there is a value in doing the same - the idea here I'm guessing is to adjust to the source time, which could deviate both ways from the time client asked for. What we'll need to figure out is which stamp we should actually be using for the new clock position. You can have multiple sources with multiple streams, so number of events with timestamps is potentially number of streams across all sources + number of sources.
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https://gitlab.winehq.org/wine/wine/-/merge_requests/7833#note_101791
This fixes "out of realized font handles" errors seen with Valve games like Half-Life 2 (which uses more than 1000 font handles).
The new limit of 5000 is roughly inspired by the Windows limit, although there are differences. On Windows 11 I can call `CreateFont()` (and then `SetMapMode()`, `SelectObject()`, `SetTextAlign()` to realize the font) exactly 5000 times before it hits the handle limit.
Under Wine, child fonts use handles as well, so the limit is usually hit before 5000 `CreateFont()` calls. But, there is caching so that `CreateFont()` calls with identical arguments do not count towards the limit. Ultimately the old limit of 256 was sufficient for almost all applications, and 5000 should be enough for all but the worst-behaved apps.
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v3: win32u: Make font handle table dynamically growable.
win32u: Track free font handles through indices instead of pointers.
win32u: Enter font_lock in NtGdiMakeFontDir.
https://gitlab.winehq.org/wine/wine/-/merge_requests/7771
This MR adds tests that examine the values of the samples output by the byte stream handlers.
It is marked as draft as it is dependent on the fixes included within MR !7569.
I've also renamed the tests as they previously exclusively tested the sample output timestamps. The tests now also look at the number of buffers included in a sample and total size of the buffers within a sample.
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v5: mfplat/tests: Add tests for MP3 Byte Stream Output.
mfplat/tests: Add tests for Byte Stream Output.
https://gitlab.winehq.org/wine/wine/-/merge_requests/7672