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Update MPV playback threading model (#481)

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This PR updates `MpvPlayer` to use a threading model more similar to
[ExoPlayer's
model](https://developer.android.com/reference/androidx/media3/exoplayer/ExoPlayer#threading-model).

There's now a dedicated thread looper message queue between the UI
interactions on the main thread and calls to `libmpv`. This is necessary
because previously, the main thread would make the calls into `libmpv`.
`libmpv` uses internal mutex locking for some operations which meant
that the main thread would be blocked momentarily.

Now, the UI issues a command (eg seek to X position) and the command is
added to the thread looper queue and processed on that separate thread.
This uses the standard Android Handler/Looper mechanisms.

Related to #235
This commit is contained in:
Ray 2025-12-17 18:24:25 -05:00 • committed by GitHub
parent 7320c12f0c
commit 8b40e89b8a
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5 changed files with 411 additions and 182 deletions
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2
app/src/main/jni/log.h
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@ -2,7 +2,7 @@
#include <android/log.h>
#define DEBUG 1
#define DEBUG 0
#define LOG_TAG "mpv"
#define ALOGE(...) __android_log_print(ANDROID_LOG_ERROR, LOG_TAG, __VA_ARGS__)