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These are inherently incompatible. As far as I'm aware, SDL must be used
from the main thread on OSX.
(Technically, this condition is wrong: the problem happens on OSX in
general, or more precisely, when SDL uses Cocoa. I didn't find the waf
OSX dependency name after 5 second of searching, so I'm just using
cocoa, without which mpv is useless on OSX anyway.)
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It seems some users try to use it (!). This VO was always an experiment,
and intended for low power devices. Whether this experiment succeeded or
not, it's a rather obscure VO. Recently I've seen a regrettable user,
who seemed to use this only because mpv was built without x11 support
(!). Add this warning, like other fallback VOs have it. (The message was
copied from vo_x11.)
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Enabling this by default probably causes a number of issues, such as
breaking vo_sdl, or reacting to various input devices while the window
is not focused. It's also pretty obscure, or at least new. Disable it by
default.
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lavc_process() calls the receive/send callbacks, which mirror
libavcodec's send/receive API. The receive API in particular can return
both a status code and a frame. Normally, libavcodec is pretty explicit
that it can't return both a frame and an error. But the receive callback
does more stuff in addition (vd_lavc does hardware decoding fallbacks
etc.). The previous commit shows an instance where this happened, and
where it leaked a frame in this case.
For robustness, check whether the frame is set first, i.e. trust it over
the status code. Before this, it checked for an EOF status first.
Hopefully is of no consequence otherwise. I made this change after
testing everything (can someone implement a test suite which tests this
exhaustively).
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Commit 5d5fdb77e99 changed details of the decoding control flow, and
called it a "high-risk" change. It turns out that this broke with with
hwdec copy mode, where there is some sort of delay queue (supposedly
increases efficiency, but more likely worthless cargo-cult).
It simply used the wrong (basically inverted) condition for the draining
case.
This was the only case that did not work properly. Other tests,
including video/audio decoding errors, software decoding fallbacks,
etc., seemed to work well. Might still not be exhaustive, as there are
so many corner cases.
Also change two error code returns. This don't/shouldn't really matter,
though the second error code led it to return both a frame and
AVERROR_EOF, which is unexpected, and makes lavc_process() leak a frame.
But also see next commit.
Fixes: 5d5fdb77e99
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If expected_sync_pc is greater than submit_count, the unsigned
subtraction will wraparound, which breaks playback. This bug was found
while experimenting with bit-blt model present, but it might be possible
to trigger it with the flip model as well, if there was a dropped frame.
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This doesn't take a ',' separated list. --script is just an alias for
--scripts--append. --scripts accepts a list, but uses the
mplayer-inherited platform-dependent path separator.
Fixes: #5996
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Also add an OSD entry for the video aspect.
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It appears this option didn't have min/max enabled for quite a while
(broken while it was still called --aspect).
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JSON doesn't support these for some god-awful reason. (JSON would have
been so much better if it weren't based on JavaScript, the plague of
this world.)
We don't really care whether these specific values "round trip", so we
might as well write them in a standard-compliant way.
Untested. I was too lazy to even run this, but it probably works.
See #6691.
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Internally, vo_gpu uses NaN for some options to indicate a default value
that is different depending on the context (e.g. different scalers).
There are 2 problems with this:
1. you couldn't reset the options to their defaults
2. NaN is a damn mess and shouldn't be part of the API
The option parser already rejected NaN explicitly, which is why 1.
didn't work. Regarding 2., JSON might be a good example, and actually
caused a bug report.
Fix this by mapping NaN to the special value "default". I think I'd
prefer other mechanisms (maybe just having every scaler expose separate
options?), but for now this will do. See you in a future commit, which
painfully deprecates this and replaces it with something else.
I refrained from using "no" (my favorite magic value for "unset" etc.)
because then I'd have e.g. make --no-scale-param1 work, which in
addition to a lot of effort looks dumb and nobody will use it.
Here's also an apology for the shitty added test script.
Fixes: #6691
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As pointed out by LaserEyess on IRC.
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This is semantically different in C.
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In theory, it's better to keep the old value, because that's more
consistent with the logic of using change timestamps. With the current
code, the old value will probably never be used (instead it will fetch a
new value on every change), so this shouldn't make a difference in
practice.
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This doesn't take a ',' separated list. --script is just an alias for
--scripts--append. --scripts accepts a list, but uses the
mplayer-inherited platform-dependent path separator.
Fixes: #5996
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In commit 065c307e8e7db, I broke everything. It seemed like a nice idea,
but it explicitly broke an assumption vo_libmpv were explicitly allowed
to make: that observing properties does not lock the core. The commit
did just that and locked the core for property updates. This made for
example mpv's own OSX backend freeze (it uses vo_libmpv for convenience
to make up for Apple's incredibly broken OpenGL shit).
I don't want to revert that commit just because vo_libmpv's design is
horrible. So instead add an optional asynchronous path, that is only
used if vo_libmpv is in use (best idea ever?).
Interestingly, this isn't so hard. It adds about 90 lines of code, which
are only run on OSX and libmpv users, so I don't have to care about the
crashes and weird behavior this might cause. It even worked on the first
try except for a quickly fixed memory leak. The code path can be tested
anywhere by just turning the uses_vo_libmpv condition into always true.
The atomic is out of laziness. Saves some thinking how to get around the
locking order.
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Also add an OSD entry for the video aspect.
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It appears this option didn't have min/max enabled for quite a while
(broken while it was still called --aspect).
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JSON doesn't support these for some god-awful reason. (JSON would have
been so much better if it weren't based on JavaScript, the plague of
this world.)
We don't really care whether these specific values "round trip", so we
might as well write them in a standard-compliant way.
Untested. I was too lazy to even run this, but it probably works.
See #6691.
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Internally, vo_gpu uses NaN for some options to indicate a default value
that is different depending on the context (e.g. different scalers).
There are 2 problems with this:
1. you couldn't reset the options to their defaults
2. NaN is a damn mess and shouldn't be part of the API
The option parser already rejected NaN explicitly, which is why 1.
didn't work. Regarding 2., JSON might be a good example, and actually
caused a bug report.
Fix this by mapping NaN to the special value "default". I think I'd
prefer other mechanisms (maybe just having every scaler expose separate
options?), but for now this will do. See you in a future commit, which
painfully deprecates this and replaces it with something else.
I refrained from using "no" (my favorite magic value for "unset" etc.)
because then I'd have e.g. make --no-scale-param1 work, which in
addition to a lot of effort looks dumb and nobody will use it.
Here's also an apology for the shitty added test script.
Fixes: #6691
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The commit linked below added temporary unlocking to update_prop(),
which is indirectly called by mpv_wait_event(). If an unlock happens,
and no property change event is returned, we must re-poll the event
queue. Rechecking the state on unlocks is basically a standard
requirement for code using condition variables.
Untested beyond a simple test.
Fixes: 065c307e8e7dbf
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ad_lavc and vd_lavc use the lavc_process() helper to translate the
FFmpeg push/pull API to the internal filter API (which completely
mismatch, even though I'm responsible for both, just fucking kill me).
This interface was "slightly" too tight. It returned only a bool
indicating "progress", which was not enough to handle some cases (see
following commit).
While we're at it, move all state into a struct. This is only a single
bool, but we get the chance to add more if needed.
This fixes mpv falling asleep if decoding returns an error during
draining. If decoding fails when we already sent EOF, the state machine
stopped making progress. This left mpv just sitting around and doing
nothing.
A test case can be created with: echo $RANDOM >> image.png
This makes libavformat read a proper packet plus a packet of garbage.
libavcodec will decode a frame, and then return an error code. The
lavc_process() wrapper could not deal with this, because there was no
way to differentiate between "retry" and "send new packet". Normally, it
would send a new packet, so decoding would make progress anyway. If
there was "progress", we couldn't just retry, because it'd retry
forever.
This is made worse by the fact that it tries to decode at least two
frames before starting display, meaning it will "sit around and do
nothing" before the picture is displayed.
Change it so that on error return, "receiving" a frame is retried. This
will make it return the EOF, so everything works properly.
This is a high-risk change, because all these funny bullshit exceptions
for hardware decoding are in the way, and I didn't retest them. For
example, if hardware decoding is enabled, it keeps a list of packets,
that are fed into the decoder again if hardware decoding fails, and a
software fallback is performed. Another case of horrifying accidental
complexity.
Fixes: #6618
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Property change notification works by having the mpv core wake up all
clients observing a property when the property potentially changes. The
clients then read the property's value, and determine if there was an
actual change. (The latter part depends what the property returned for
the previous change notification, so it depends on the client, and
cannot be generated by the core itself.)
Until now, reading the property value was done in a pseudo-async way by
queuing a callback back to the core, running it there, and then waking
up the client thread again. I cannot comprehend why this was done in
such a complicated, fragile way. Maybe it's a leftover from times when
client.c had to do this (in short, because properties could access
vo_opengl, which has thread-local state).
One past idea was to make the implementation of true async properties
easier (for which you would need such a state machine anyway). But they
don't exist yet, and I doubt the current mess would be really helpful
when actually implementing them.
Simplify this, and run the update in the client's thread directly. In
addition to the fundamental change, many roundabout things can be
removed as a consequence.
Unfortunately, I noticed that lock order issues force you to release
ctx->lock before doing so, which makes things more complex due to
possible concurrent mpv_unobserve_property() calls. Solve this by
removing properties lazily, which means you may have to do multiple
mpv_wait_event() calls before the property entry is actually destroyed.
This should not matter in practice, and does not affect the semantics.
It could also cause "leaks" by observing/unobserving properties in a
loop, without ever calling mpv_wait_event(). Just don't do this, duh.
(I considered making this dependent on whether the previous
mpv_wait_event() call returned the property being removed, but a
separate code path seemed too complicated. I also considered copying the
name and property data when returning a MPV_EVENT_PROPERTY_CHANGE, but
actually this doesn't solve the problem of update_prop() being
interrupted by mpv_unobserve_property(); there are ways around it, but I
just said no.)
This was made using the cowboy coding software engineering methodology.
If you find any bugs, keep them yourself.
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May reduce the diff of the next commit.
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Apparently this was only added and used for cache update stuff, which
was changed in commit 8dbc93a94cdc3c. Now it's unused, messy, ugly, and
is in the way, so get rid of it.
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Not doing this looked like a memory leak.
This looks like an oversight in the commit that added it: a94020e25bc5f,
possible brain damage?
Fixes: #6823
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Fixes: #6547
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Before this commit, the status line used terminal control codes only if
stderr was a terminal. I'm not sure why this was done, and git blame
tracks it back to a huge commit by me, which changed all of the terminal
handling.
A user complained, so just stop treating this specially for no reason.
Fixes: #6617
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Do this only if ytdl-format was not set at all.
Fixes: #6636
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Plus some other minor corrections.
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In particular describe dataflow issues (see #7020).
Insert complaint that I'm wasting time on this crap instead of things
that benefit me.
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The code is very basic:
- only handles gamepads, could be extended for generic joysticks in the
future.
- only has button mappings for controllers natively supported by SDL2.
I heard more can be added through env vars, there's also ways to load
mappings from text files, but I'd rather not go there yet. Common ones
like Dualshock are supported natively.
- analog buttons (TRIGGER and AXIS) are mapped to discrete buttons using an
activation threshold.
- only supports one gamepad at a time. the feature is intented to use
gamepads as evolved remote controls, not play multiplayer games in mpv :)
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This can be used by distros to disable all known FFmpeg ABI violations.
Currently only 1 is known, in demux_lavf.c. In addition to if-defing out
the access to the private FFmpeg field, this disables the possibly
fragile nested open callbacks, which make sense only if the
aforementioned field can be accessed.
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Form some reason (and because of my fault), vf_format converts image
formats, but nothing else. For example, setting the "colormatrix"
sub-parameter would not convert it to the new value, but instead
overwrite the metadata (basically "reinterpreting" the image data
without changing it).
Make the historical mistake worse, and go all the way and extend it such
that it can perform a conversion. For compatibility reasons, this needs
to be requested explicitly. (Maybe this would deserve a separate filter
to begin with, but things are messed up anyway. Feel free to suggest an
elegant and simple solution.)
This demonstrates how zimg can properly perform some conversions which
swscale cannot (see examples added to vf.rst).
Stupidly this requires 2 code paths, one for conversion, and one for
overriding the parameters.
Due to the filter bullshit (what was I thinking), this requires quite
some acrobatics that would not be necessary without these abstractions.
On the other hand, it'd definitely be more of a mess without it. Oh
whatever.
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This could log:
[swscale] falling back to swscale
And that's a WTF, even if you're aware of the fucky way zimg was hacked
into the filter chain.
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f_reset, which is called on seeks, was a good place for resetting the
warning flag (so the warning would be print again). Except some other
code abused f_reset when all metadata was read (in both cases you want
to clear the metadata). Instead of spending more time on getting this
flag reset correctly, just never reset it.
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Now these are like x2ccc10_pack: MSB to LSB, with bit width following
each component (except for components with the same bit width).
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The usual opt-in mechanism.
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