When the vector is empty, using `&vec[0]` involves undefined behaviour. While that works fine most of the time, Flatpak builds aborted on a failed `__builtin_expect`.
I searched for such occurences across the codebase with the regex `(?<!&)&\w+\[0\]` and fixed those that would potentially cause issues.
Previously the movie was started *after* core starts running, causing potential indeterminism.
Some desyncs are still not fixed; they may be caused by core timing. More investigation is required.
Since we do not have an overlay yet, it can be confusing whether movie is being recorded or played. This makes it clear.
Status messages (e.g. system archive missing) will be overriden, but that shouldn't be too important when recording movies.
Doubled the status bar updating frequency to provide a better experience. It now updates every second.
This is completely rebuilt, in order to allow setting author, displaying movie metadata, and toggling read-only mode.
The UX is changed to more closely match other emulators' behaviour. Now you can only record/play from start/reset (In the future, we might want to introduce 'record from savestate')
Also fixed a critical bug where movie file can be corrupted when ending the recording while game is still running.
Instead of specifying it when starting playback. This is necessary as
you can end up playing the movie even if you started as Recording
(for example, loading a state in R/O mode will switch to Playing mode)
Most other emulators handle this automatically in the frontend,
booting/restarting the corresponding game instead of reporting an error.
Therefore, remove these checks and errors from the module.
These fields are included in most emulators and required by TASVideos.
`input_count` is implemented by counting the number of 'PadAndCircle' states, as this is always polled regularly and can act as a time/length indicator.
TASVideos also require the input count/frame count to be verified by the emulator before playback, which is also implemented in this commit.
The read-only mode switch affects how movies interact with savestates after you start a movie playback and load a savestate. When you are in read-only mode, the movie will resume playing from the loaded savestate. When you are in read+write mode however, your input will be recorded over the original movie ('rerecording'). If you wish to start rerecording immediately, you should switch to R+W mode, save a state and then load it.
To make this more user-friendly, I also added a unique ID to the movies, which allows each movie to have an individual set of savestate slots (plus another set for when not doing any movies). This is as recommended by staff at TASVideos.
Given this is a central class, we should flag cases where the return
value of some functions not being used is likely a bug.
Co-Authored-By: LC <712067+lioncash@users.noreply.github.com>
Previously core itself was the library containing the code to gather
common information (build info, CPU info, and OS info), however all of
this isn't core-dependent and can be moved to the common code and use
the common interfaces. We can then just call those functions from the
core instead.
This will allow replacing our CPU detection with Xbyak's which has
better detection facilities than ours. It also keeps more
architecture-dependent code in common instead of core.
Follows the video core PR. fmt doesn't require casts for enum classes
anymore, so we can remove quite a few casts.
Co-Authored-By: LC <712067+lioncash@users.noreply.github.com>
