A bit of a long standing pain with scripting is that when opening a file
that gets interpreted as a playlist (like an m3u), the original path of
the file gets thrown away later. Workarounds basically consist of
getting the filename before mpv expands the path, but that's not really
reliable. Instead of throwing it away, save the original playlist path
by copying to the playlist entries when applicable (demuxer playlist and
the playlist option). Then expose these as properties: playlist-path for
the currently playing entry and playlist/N/playlist-path for each
specific entry. Closes#8508, #7605.
The OSC reports the speed-adjusted remaining time, but the terminal does
not. This is a weird mismatch and the OSC's default behavior makes
sense, so let's just do some division and add an option to disable it.
Also named "remaining-playtime" after the OSC option. Fixes#10445.
mpv makes this option an integer, but the underlying ass API actually
accepts doubles. From some testing, there is no meaningful precision
difference between float or double (it seems to go in roughly 0.05
steps), so just make it a float. sd_lavc also can handle non-integer
values here. Closes#11583.
When printing the name of the video track on the OSC, mpv almost always
prefixes it with "unknown". This is referring to the language tag which
essentially nobody ever does for the video track since it doesn't make
any sense. Instead of putting unknown when there's no language, just
make it an empty string instead. "Unknown" confuses can confuse users
here and practically nobody would guess that it's referring to language.
We still will print the language for a video track in case someone out
there really does tag it, but that should be rare.
When playing a sparse video stream, the debug log gets hit with the
video EOF constantly since the audio is still playing. There's no
practical use for this so just do add some logic to only signal it once
if it is sparse.
There's an edge cause with gapless audio and pausing. Since, gapless
audio works by sending an EOF immediately, it's possible to pause on the
next file before audio actually finishes playing and thus the sound gets
cut off. The fix is to simply just always do an ao_drain if the ao is
about to set a pause on EOF and we still have audio playing.
Fixes#8898.
This is pretty obscure but if you screw around with the play-dir option
to essentially create a ping-pong loop; mpv will get hit by an assertion
error. What's happening here is that changing the play-dir always
requires a seek. This is handled in player/command along with the other
runtime option changes. However, queue_seek can actually clear the value
of mpctx->stop_play if the file is ending. So while loadfile is
terminating playback and the play-dir gets changed, the value of
mpctx->stop_play gets cleared because of seek. This then hits that
assertion later when mpv tries to finish the file.
The fix is to just add some weird logic to play-dir in player/command.
We have to be sure that mpctx->play_dir matches the new direction
immediately when we get the change so explictly set it here and don't
wait for it later. Secondly, keep the old value of mpctx->stop_play
before the seek and restore it afterwards. This ensures that termination
still happens cleanly and allows the ping-pong loop to work. Fixes#10782
Internal subtitles were not shown when switching between tracks while
mpv was paused. The reason for this is simply because the demuxer data
isn't available yet when the track switch happens. Fixing it is
basically just retrying until the packet is actually available when the
player is paused. Fixes#8311.
1df0a42a8c changed aspect-ratio from
floats to doubles, but forgot to change this function for
pretty-printing them as fractions for the video-aspect-override property
This only existed as essentially a workaround for meson's behavior and
to maintain compatibility with the waf build. Since waf put everything
in a generated subdirectory, we had to put make a subdirectory called
"generated" in the source for meson so stuff could go to the right
place. Well now we don't need to do that anymore. Move the meson.build
files around so they go in the appropriate place in the subdirectory of
the source tree and change the paths of the headers accordingly. A
couple of important things to note.
1. mpv.com now gets made in build/player/mpv.com (necessary because of
a meson limitation)
2. The macos icon generation path is shortened to
TOOLS/osxbundle/icon.icns.inc.
The track during lavfi-complex can actually be NULL which meant that
ca4192e2df regressed lavfi-complex by
causing mpv to crash during runtime changes of the filter. Additionally,
it's possible for the decoder wrapper to also be NULL. check_framedrop
within write_video checks this, but check_for_hwdec_fallback does not.
Perhaps, it's impossible for this to happen, but we might as well add
the check here to be on the safe side since mp_decoder_wrapper_control
is not designed to handle a NULL.
It's a bit of an edge case, but since we now allow the disabling of the
software fallback it's possible to have a situation where hwdec
completely fails and the mpv window is still lingering from the previous
item in the playlist. What needs to happen is simply that the vo_chain
should uninit itself and handle force_window if needed. In order to do
that, a new VDCTRL is added that checks vd_lavc if force_eof was set.
player/video will then start the uninit process if needed after getting
this.
Currently, the osc will add a margin of (osc_height / 2) to the
deadzonesize for the window controls, the topbar and the bottombar,
i.e. when osc-deadzonesize=1, the osc will show up even if the cursor
is only hovering (osc_height / 2) pixels above or below it. This is not
what this option is supposed to do according to the manual, instead
osc-deadzonesize=1 should result in the osc only appearing when it is
directly hovered. The user can simply set osc-deadzonesize=0.9 or so if
such a margin is desired, instead make the option work as advertised by
removing this margin.
It should be noted that osc-layout=box does not share this behavior,
and it already works as advertised in the manual.
mpv already has a bunch of software scaling utils. Instead of forcing
every VO to implement this, we can just grab the frame and scale it in
software in one central place. Fixes#11968.
We should always be trying hardware screenshots (VOCTRL_SCREENSHOT and
VOCTRL_SCREENSHOT_WIN) before software ones. Rearrange all the logic
here to hopefully make this clearer. The mode is passed to add_osd
(renamed since it will also be used to add the osd) which will be used
more in the next commit.
When using lavfi-complex, no single track populates current_track for audio.
We work around this by iterating over the list of tracks and using the first
non-null language from a selected track. If multiple tracks are selected
(i.e. used by the filter) and have conflicting language tags, we'll ignore
them all and maintain the previous behavior (null).
6a365b258a broke deleting redirect entries for resuming playback. If you
do mpv dir1 dir2, quit-watch-later on a file in dir1, then later
quit-watch-later on a file in dir2, mpv dir1 dir2 would not resume from
dir2 because the redirect entry for dir1 is never deleted.
Fix this by deleting watch later config files for directory/playlist
entries.
Currently, mpv immediately deletes the watch_later file after an attempt
at playing the file is made. This is not really ideal because the file
may fail to load for a variety of reasons (including not even existing),
but the state is cleared anyway unconditionally. Instead, just wait
until after playback is successfully initialized before deleting it.
This way silly mistakes like forgetting to mount the drive doesn't
result in deleting your watch_later data. Fixes#3427.
in the first iteration, *out will be null and thus the steal and the
strdup both sets the parent to NULL - leaking the allocation later on
(caught via LeakSanitizer).
let append_lang() take care of setting the parent instead.
519e56f caused an attempt to get the language even if the file name
didn't start with the movie title. However, detecting a language when
fuzz >= 1 or the language is known, caused prio to be non-zero which
caused the file to be included regardless of its name. This shouldn't be
the behavior when sub-auto != all.
Now all the prio updates that depend on lang will only happen if the
file in question starts with the movie name. Since language was never
detected before if this wasn't true, the behavior should be the same as
before 519e56f when sub-auto != all.
Closes: #11749
Finding the prefix in the key is not enough, the key has to actually
start with the prefix. Otherwise a key like `uosc-font_scale` will not
only match the `uosc-` prefix, but also the `osc-` prefix, resulting
in a logged warning about `-font_scale` being an unknown key.
Previously, we'd only attempt to call guess_lang_from_filename if the
external file name matched the video name ignoring the extensions. So if
they didn't match, we'd just report the language as "unknown". And since
the name will never match for urls, the language would always be treated
as unknown.
Now we'll always try to guess the language from the filename regardless
of its similarity to the video file name.
Closes#10348
A pain point for some users is the fact that watch_later is stored in
the ~/.config directory when it's really not configuration data. Roughly
2 years ago, XDG_STATE_DIR was added to the XDG Base Directory
Specification[0] and its description, user-specific state data, actually
perfectly matches what watch_later data is for. Let's go ahead and use
this directory as the default for watch_later. This change only affects
non-darwin unix-like systems (i.e. Linux, BSDs, etc.). The directory
doesn't move for anyone else.
Internally, quite a few things change with regards to the path
selection. If the platform in question does not have a statedir concept,
then the path selection will simply return "home" instead (old
behavior). Fixes#9147.
[0]: 4f2884e16d
Currently, nothing new is actually implemented but the idea is simply to
just pass a type string all the way up from mp_find_user_file down to
actually getting the platform path. This allows for selecting different
directories besides the user's native config directory. See the next
commit for an implementation.
If --screenshot-tag-csp=no, then there won't be any color tags in the
output space, so PNG and JXL screenshots should be written as sRGB
rather than the native space of the input video.
6e4a76db08 attemped to reject invalid
properties and print an error for users so they actually know that
something is going wrong. This worked by simply checking if the property
not found error is returned, but it is actually perfectly possible for a
property to not be found (different than being unavailable just to be
clear here) at first and then show up later. An example would be
user-data which can be created at any time. It's also possible with
subproperties of things like track-list where a new track could be added
later.
In light of this, let's soften the error checking logic here with a
simple trick. mpv already keeps track of all toplevel properties and it
can be easily retrieved with the "property-list" property, so just cache
that. When we get a property not found error, instead of rejecting it,
try to match it something in the property-list first. If we have a
match, then consider the property valid and allow the script to behavior
normally. If not, we reject it. This approach means property names that
are obviously wrong like "fake-property-here" will reliably get rejected
and something like "user-data/test" works as usual. The downside is that
errors in the subproperty level are not caught, so something like
"track-list/0/fake-property" would still be considered valid and the
user gets no warning that this won't work. We'll just accept the
compromise and hope this isn't too common.
Fixes#11550.
Instead of erroring when values returned by profile-cond expressions
aren't booleans, apply the relative profiles as long as the return
values are truthy. This allows shortening conditions like
profile-cond=path:match('foo') ~= nil
to
profile-cond=path:match('foo')
The idle logo could appear on the left side of the window for a split
second after starting.
That is because when osd dimensions can be reported as 0 at the very beginning.
Since the width gets calculated based on a fixed height and the aspect ratio,
which is 0, that results in a width of 0 until the next update.
Previously, it just silently didn't do anything which is not very
intuitive. Since the lua api returns an error string, check to see if
it matches the "property not found" case and print an error message.
Additionally, don't add the fake property to the internal
cached_properties list or try to observe it. This avoids redundant
evaluate calls which will never actually succeed. We do still mark it
under watched_properties however. This avoids having to call
mp.get_property_native multiple times.
The playlist title only got set when it was specified in the playlist
file.
If there is a title after opening a file, that should also be reflected
in the playlist.
As it turns out that approach was suboptimal.
The playlist title would only ever get set when media-title actually
gets read, which depending on the configuration and usage might never
happen.
The next commit reimplements that feature in a different way.
This reverts commit 048d4d8b75 except for
the input.rst change.
In raw OTA MPEGTS, different programs can be entirely different virtual channels.
In web streams, different programs can be different variant bitrates,
so using streams from different programs can waste large amounts of bandwidth.
An error indicates that something doesn't work, but as long as a
safe url is available, playback is still expected to work.
Thus reduce logging level of MP4 DASH without fragments message and
add a new error message for when there is no safe url available either.
Also adds a missing space.
With dash the first fragment was always considered an init fragment if
there wasn't a duration. However that only makes sense when there are
also other fragments, so check if there are other fragments in addition
to the lack of a duration.
Since meson has its own unit testing system, let's rework mpv's tests so
they integrate nicely with this. To prepare for this, start off by
dropping the unittest option. Of course, this means that tests will no
longer be supported in the waf build at all but it will be dropped
anyway. Note that the tests option is preserved for the meson build. We
will still make use of this in the future commits.
The console.lua check is still kind of dumb since we check an
environment variable to distinguish between wayland and x11, but
otherwise it should be better in theory.
This returns the value of the target OS that mpv was built on as
reported by the build system. It is quite conceivable that script
writers and API users would need to make OS-dependent choices in some
cases. Such people end up writing boilerplate/hacks to guess what OS
they are on. Assuming you trust the build system (if you don't, we're in
really deep trouble), then mpv actually knows exactly what OS it was
built on. Simply take this information at configuration time, make it a
define, and let mp_property_platform return the value.
Note that mpv has two build systems (waf and meson), so the names of the
detected OSes may not be exactly the same. Since meson is the newer
build system, the value of this property follows meson's naming
conventions*. In the waf build, there is a small function to map known
naming deviations to match meson (i.e. changing "win32" to "windows").
waf's documentation is a nightmare to follow, but it seems to simply
take the output of sys.platform in python and strip away any trailing
numbers if they exist (exception being win32 and os2)*.
*: https://mesonbuild.com/Reference-tables.html#operating-system-names
*: https://waf.io/apidocs/Utils.html#waflib.Utils.unversioned_sys_platform
ytdl_hook always set force-media-title, making users unable to force
a media-title via options.
To prevent that, check if force-media-title is already set to avoid
overwriting it.
A better solution would be to use tags like is already done for some
metadata, however that doesn't work when `all_formats=yes` is used.
See cbb8f534b0
A comment was added to hint at why it isn't done via tags.
ref.
https://github.com/mpv-player/mpv/pull/10453#issuecomment-1445277496
This refactors exec to only return the result of the subprocess command,
and makes the rest of run_ytdl_hook use the fields of this result,
because specifying all those return values multiple times is unwieldy
now that exec is called several times, and this is easier to read
anyway.
I removed the line
err = string.format("%s returned '%d'", err, es)
altogether instead of updating the es variable, because there was no
chance of it being executed since it would only happen when
result.killed_by_us is true, but run_ytdl_hook returns early when it is.
Changing the CONF_TYPE_FLAG was a bad idea because mpv_node.u.flag
continues to be an int, leading to a mismatch in type sizes which can
lead to problems with memcpy().
ref. #11373
This partially reverts commit 17d91b9d4d.
The playlist title only got set when it was specified in the
playlist file.
If there is a title after opening a file, that should also be reflected
in the playlist.
ref. #4780
c784820454 introduced a bool option type
as a replacement for the flag type, but didn't actually transition and
remove the flag type because it would have been too much mundane work.
This allows the logic in `convert_image` to fast-path if the image
params are equal. Without this check, the image params are basically
never equal, because that path goes through `mp_image_params_guess_csp`
while the `mp_image` itself does not.
Force it here for consistency across VOs.
The value of `sig-peak` is relative to the SDR peak. This is not
a problem when used inside the player, but the `HDR peak` in stats
should display human-readable information.
So change to return the actual nits value of HDR.
Closed https://github.com/mpv-player/mpv/issues/10127
This reverts:
3fb4140c lua/defaults: add user_data helpers
68a20e7a javascript/defaults: add user_data helpers
00510379 lua/js: fix user_data_del util function
As well as the lua/js parts of:
3ec2a098 docs: document new user-data property
user-data and its sub-properties can be set/get/observed/deleted
via the standard properties interface, so there's no need for
additional helpers specific to user-data, which only added maintenance
burden.
This will replace shared-script-properties in new usage. It can be used for all the same things, but is much more versatile.
Clients can create arbitrary sub-objects, and text expansion can access them.
For instance, if a script sets `user-data/my-script/property1` to "test", that value will be available by expanding ${user-data/my-script/property1}.
ao-volume is represented in the code with a `struct ao_control_vol_t`
which contains volumes for two channels, left and right.
However the code implementing this property in command.c never treats
these values individually. They are always averaged together.
On the other hand the code in the AOs handling these values also has to
handle the case where *not* exactly two channels are handled.
So let's remove the `struct ao_control_vol_t` and replace it with a
simple float.
This makes the semantics clear to AO authors and allows us to drop some code from the AOs and command.c.
Previously, if log-file was set not via a CLI option (e.g. set via
mpv.conf or other config file, or set from a script init phase),
then meaningful early log messages were thrown away because the log
file name was unknown initially.
Such early log messages include the command line arguments, any
options set from mpv.conf, and possibly more.
Now we store up to 5000 early messages before the log file name is
known, and flush them once/if it becomes known, or destroy this
buffer once mpv init is complete.
The implementation is similar and adjacent, but not identical, to an
existing early log system for mpv clients which request a log buffer.
In debug mode the macro causes an assertion failure.
In release mode it works differently and tells the compiler that it can
assume the codepath will never execute. For this reason I was conversative
in replacing it, e.g. in mpv-internal code that exhausts all valid values
of an enum or when a condition is clear from directly preceding code.
The watch-later mechanism has always unconditionally wrote start to
files to save the playback position. When this was later expanded to
watch-later-options, this logic was kept in place. But we don't actually
have to unconditionally write this and can allow users to remove the
option from the list if they want to. The start value still requires
some special handling; it should always be written if possible
regardless of the value changing. However, we can just place it within
the default set of options for watch-later-options so it can be removed
like any other.
So far there was no way to sync video to display and have audio sync to
video without changes in pitch.
With this option the audio does not get resampled (pitch change) and
instead the corrected audio speed is applied to audio filters.
Instead of choosing based on smallest deviation from set speed,
use the speed change from the smallest factor that does not
exceed `video-sync-max-video-change`.
mpv currently only recognizes jpg and png files named "AlbumArt",
"Album", "cover", etc. which are in the same folder as the audio files
as album/cover art and displays it when playing such audios.
This feature adds support for webp files following the same naming
scheme to be displayed as cover art for albums who have them.
Webp variations are lower in priority compared to jpg or png files.
Resolves: #11006
We ask users to freely share log files with us, which is usually
okay, unless a user has some unrelated and potentially embarrassing
files in their working directory. These would show up in the debug
level message output that --log-file enables.
Change the listing of potential external files to trace log level,
to save the users and the developers the embarrassment.
currently only supported on x11.
one practical use-case of this is wanting to embed something (such as
dmenu) into the mpv window to use as a menu/selection. there might be
other use-cases as well (e.g doing some shenanigans with `xdotool` or
whatnot).
it's currently possible to:
* listen for 'current-window-scale' change (to check if the
window has been created or not)
* call an external tool like `xdo` or `xdotool` and grab the xid
from mpv's pid.
however it adds unnecessary dependency on external tools when mpv is
fully capable of easily providing this information.
closes: #10918
Not sure when this actually started happening, but it's probably been
like this for years. Currently, the logic for the window-controls works
by simply checking if the osc is visible and then either enabling or
disabling the associated keybindings. The problem is that this can just
constantly spam mp.enable_keybindings/disable_key_bindings on every
single render call if the user disables the border at any point in time.
This does a lot of pointless work and also results in the logs being
spammed with lines like "disable-section". Clearly, this should just
work like the code for checking the input keybindings just above it.
Keep track of an internal state variable and check when it doesn't match
the osc visibility. In that case, we can then either enable or disable
the key bindings and just update the variable.
mpv's core already keeps track of whether or not it thinks a track is an
image. Some VOs (i.e. wayland) would benefit from knowing if what is
currently being displayed is an image or not so add a new VOCTRL that
signals this anytime we load a new file with a VO. Additionally, let's
add a helper enum for signaling the kind of content that is being
displayed. There is now MP_CONTENT_NONE (strictly for force window being
used on a track with no image/video), MP_CONTENT_IMAGE, and
MP_CONTENT_VIDEO. See the next commit for the actual usage of this (with
wayland).
Deduplicate history like the fish shell. So for example
entering "cmd 1" then "cmd 2" then "cmd 3" then "cmd 1"
would result in a history of
[cmd 2][cmd 3][cmd 1]
instead of
[cmd 1][cmd 2][cmd 3][cmd 1]
Adds a function `history_add` to replace directly adding to history.
Adds an option `history_dedup` to activate the deduplication.
Defaults to on.
Only matters when configuring ytdl_hook with `all_formats=yes`.
So far the tracks were ordered from worst to best quality.
Web players with quality selection always show the highest quality
option at the top. Since tracks are usually listed with the first
track at the top, that should also be the highest quality one.
yt-dlp/youtube-dl sorts it's formats from worst to best.
Iterate in reverse to get best track first.
Console already respected the bottom margin to not overlap with the
bottom bar from the OSC, but it would still overlap with the window
decorations from the OSC.
Now everything is clipped above the top margin and no superfluous lines
are drawn.
Today, lavfi filters are provided a hw_device from the first
hwdec_interop that was loaded, regardless of whether it's the right one
or not. In most situations where a hardware based filter is used, we
need more control over the device.
In this change, a `hwdec_interop` option is added to the lavfi wrapper
filter configuration and this is used to pick the correct hw_device to
inject into the filter or graph (in the case of a graph, all filters
get the same device).
Note that this requires the use of the explicit lavfi syntax to allow
for the extra configuration.
eg:
```
mpv --vf=hwupload
```
becomes
```
mpv --vf=lavfi=[hwupload]:hwdec_interop=cuda-nvdec
```
or
```
mpv --vf=lavfi-bridge=[hwupload]:hwdec_interop=cuda-nvdec
```
When a platform has multiple valid AOs that can provide hotplug events
we should try to use the one that also provides playback.
Concretely this will help when introducing hotplug support for
ao_pipewire.
Currently ao_pulse is probed by ao_hotplug_get_device_list() before
ao_pipewire and on the common setups where both AOs could work pulse
will be selected for hotplug handling.
This means that hotplug_init() of ao_pipewire will never be called and
list_devs() has to do its own initialization.
But if ao_pulse is non-functional or not compiled-in suddenly
ao_pipewire *must* implement hotplug_init() for hotplugging events to
work for all.
Also if the hotplug ao_pulse connects to a PulseAudio instance that is
not emulated by the same PipeWire instance as the playback ao_pipewire
the hotplug events are useless.
We have previously had a problem where pull AOs (such as pipewire)
would not reinitialize on a format change when going between two
audio-only files. In such a situation, playback would stop after the
first file.
We initially attempted to fix this by explicitly draining on EOF, which
solves that problem but introduces a blocking step where we don't
actually want one, breaking gapless audio, and causing dropped frames
at the end of playback for files with video in them too.
So, let's undo these changes and do something better in the next
commit.
52aed495cb ("audio: drain ao on EOF") introduced logic to drain an AO
when EOF of the input has been reached.
When no AO however is present this leads to a NULL-dereference.
Fixes#10556
Every format that was not detected as a video format was added to the
audio tracks. This resulted in e.g. YouTube storyboards from ending up
in the list of audio tracks.
Now formats that are already known to be neither video formats nor audio
formats, will also not end up in any track list.
Formats where it is unknown if they are video or audio get added to
tracks if `force_all_formats` is used, otherwise only
formats that are known to contain video or audio become video or audio
tracks respectively.
https://github.com/yt-dlp/yt-dlp/issues/4373#issuecomment-1186637357
One would expect that e.g.
`--script-opts=ytdl_hook-all_formats=no --ytdl-format=bestaudio` and
`--script-opts=ytdl_hook-all_formats=yes --ytdl-format=bestaudio`
to play the exact same tracks without manual intervention.
This already worked when two formats were requested.
For a single format with `all_formats=yes` it would also play a track
that was not requested when available. This was inconsistant with the
behavior of `all_formats=no` (default), which would not play a second
track when only a single one was requested.
This combined with #10395 now plays the exact same tracks with
`all_formats=yes` as without, even when only one format is requested.
Tracks are marked as default tracks based on what yt-dlp/youtube-dl
returns in the field `requested_formats`. The problem is that this field
only exists when there is more then one requested format.
So `ytdl-format=bestvideo+bestaudio` would have that field,
but `ytdl-format=bestaudio` would not,
leading to no tracks being marked as default tracks.
The requested formats can also be found under `requested_downloads`,
which exists regardless of the number of requested formats.
However when there is more then one requested format,
`requested_downloads` doesn't contain those formats directly and instead
has a field `requested_formats` that is identical to the other
`requested_formats`. Therefore use `requested_downloads` as a fallback
for when `requested_formats` doesn't exist.
This gives pull-based AOs the chance to play all queued audio.
Also it will make sure that the audio has finished playing so we can
reinitialize the AO if format changes are necessary.
Fixes#10018Fixes#9835Fixes#8904
The example given in #3024 would not play the correct video when
combined with `--ytdl-raw-options=yes-playlist=`.
Allowing `youtube:tab` as extractor and correcting the id check fixes
that.
Generally, the hard-coded sizes used for the OSC elements are
comfortable regardless of the font used, but the timecode fields have
relatively many characters, and so are affected to a greater degree by
fonts with a wider or narrower average character width than expected.
This allow users to adjust the space reserved for the timecode fields to
compensate.
Commit 7f4841ff sorted the bindings so that if the same key was bound
more than once, then the newest binding takes priority (sorted last).
However, it got the comparison function wrong, which means the result
of the sort depended on the algorithm and not on the actual data, so
the priority for keys with more than one binding was still arbitraty.
Fix the sort function, and finally ensure that later binding acutally
override earlier bindings of the same key.
Previously if the raw command_native_async returned an error then the
callback function was run directly. This meant that script writers
potentially had to account for both synchronous and asynchronous logic
in the callback, which can happen even with seemingly 'safe' commands
if the mpv event queue is full.
This was at odds with the Javascript implementation of
the function, which always runs the callback asynchronously.
Now the mp.add_timeout function is used to run the callback
asynchronously on error, replicating the Javascript implementation.
This provides consistency for developers in how the callback is handled
in Lua, and increases consistency between the Lua and Javascript APIs.
This is mainly for other user scripts that may conflict with the osc
logo in some way. Although it is possible to listen for
shared-script-properties, this has many edge cases that could easily pop
up. A user could want other OSC things to happen at the same time (say
osc-message). They just don't want the logo. The idlescreen option
disables all idlescreen related things (including the santa hat) if it
is set to "no". A new script message (osc-idlescreen) is also added so
users can easily toggle the value (passing "cycle" or just explictly
setting "yes" or "no"). Some more discussion on this is found in the
below github issues.
https://github.com/mpv-player/mpv/issues/10201https://github.com/CogentRedTester/mpv-file-browser/issues/55
If the player is started with --idle and the osc-tracklist script-message
is called then the tracks_osc table will be nil,
which caused the OSC to crash due to attempting to index a nil value.
This appears to be because the osc_tracklist variable is both
initialised and updated by (ultimately) the render() function, which
is not run when the player is idling.
Rather than mess with the existing OSC logic it's easier to either
add this single check, or alternatively to initialise the the tracks_osc
table somewhere before this.
Both mpv's main function and the client API use mp_initialize to start
up. In general, these work the same however the client API had one
slight, unnecessary limitation: you can't start it up with idle=no. In
practice, the libmpv profile (used with the client API) sets idle to
yes, so it's rarely encountered, but there's no particular reason why
this policy needs to be enforced. It turns out that mp_initialize does a
quick check to see if there are any entries in the playlist and if idle
mode is set. If not, it prints the help message and exits. Basically,
it's just the part that handles the terminal message when you type "mpv"
with no arguments. Unfortunately with idle=no, the client API also hits
this code path, exits prematurely with 1 and thus returns an API error.
Fortunately, the fix is very simple. If the client API is used instead
of the "normal" mpv executable, then the mp_initialize function gets a
NULL for the options argument. When starting mpv from the terminal (when
you would want to see the before mentioned help text), there will always
be at least an argv[0] (the mpv executable name itself) so we can
reliably distinguish between the two. The other case where there could
be no argv is if the pseudo-gui profile is used, but this always
enforces idle so we don't have to worry about it either. In other words,
with this combination of conditions (options, no idle, and no playlist
entries), we can be sure this is from a user calling mpv in the terminal
with no arguments. Therefore, other cases can be allowed which means
client API users can initialize with idle=no. Fixes#10162.
Normally with the keep-open option, mpv is supposed to set the
eof-reached property to true so clients can possibly do interesting
things at this step. However, there was actually an edge case where this
property notification did not occur. If you use keep-open and then seek
in the file past the end (so mpv stops), property notification is not
actually sent in this case. Internally, mpv does a very exact seek at
this step which also ends playback, but it does not set STATUS_EOF to
the ao and vo before the core idle state is updated. To fix this edge
case, it's simply just a matter of explictly setting STATUS_EOF after
seek_to_last_frame in handle_keep_open. This logic will only ever
trigger if keep-open is being used and the seek goes past the end of the
file, so we know that there will always be an EOF here.
09ea3a424f moved the console above the OSC when it is visible so they
don't overlap, but only changed the first ass:pos() call and forgot to
update the second one, which redraws the cursor on top of the text, so
when both the OSC and the console are visible, a second cursor is drawn
on the OSC. You have to type past where the buttons are to notice it.
This commit synchronizes the position of the 2 ASS events.
This allows more fine grained control over which cover art to load. With
--cover-art-auto=exact and --cover-art-whitelist=yes, you can now load
cover art with the exact media filename and the whitelisted filenames,
but not cover art that contains the media filename
(--cover-art-auto=fuzzy).
The video sync logic for mpv lies completely within its core at
essentially the highest layer of abstraction. The problem with this is
that it is impossible for VOs to know what video sync mode mpv is
currently using since it has no access to the opts. Because different
video sync modes completely changes how mpv's render loop operates, it's
reasonable that a VO may want to change how it renders based on the
current mode (see the next commit for an example).
Let's just move the video sync option to mp_vo_opts. MPContext, of
course, can still access the value of the option so it only requires
minor changes in player/video.c. Additionally, move the VS_IS_DISP
define from to player/core.h to common/common.h. All VOs already have
access to common/common.h, and there's no need for them to gain access
to everything that's in player/core.h.
Previously only status<0 was considered as error, but status>0 is
also an error (the process exit code). Change to status != 0.
This likely makes little to no difference in practice, because if
stdout is empty or can't be parsed as JSON then it's considered
an error anyway, but still, this is more correct.
Also, on error, add the complete subprocess result to the verbose log.
Some youtube_dl extractors retrieve URLs which contain other URLs
inside of them, for example Funimation, like this:
https://example.com/video?parameter=https://example.net/something
The url_is_safe function uses a pattern to match the protocol at the
start of the URL. Before this commit, this pattern was not compliant
with the URL spec (see the definition of "A URL-scheme string"):
https://url.spec.whatwg.org/#url-writing
Therefore it would match any characters, including "://", until the
last occurence of "://" in the string. Thus the above URL would match
https://example.com/video?parameter=https
which is not in safe_protos so the video will not play.
Now the protocol can only start with a letter and only contain
alphanumerics, "." "+" or "-" as the spec says, so it will only match
the first protocol in the URL ("https" in the above example.)
Previously the URL also had to contain "//" after the ":". Data URLs
do not contain "//": https://datatracker.ietf.org/doc/html/rfc2397
so now the pattern does not look for "//", only ":".
Page 2 displays the frame timing info for each type (currently "Fresh"
and "Redraw"), but since they're unordered keys of a map, their
iteration order and hence their order on screen could (and did) change
depending on $things, which was annoying.
haasn thinks none of them should be considered more important (and
therefore maybe worthy of being displayed on top), so we go with
lexicographic order, which currently means that "Fresh" is first.
Fixes#9901
This fixes two potential divisions by 0 at generate_graph(...):
- If v_avg is (given and) 0.
- if v_max is 0.
The former doesn't seem to happen in practice because v_avg is only
used at one generate_gpah call, where it's apparently not 0.
The latter triggers if all the graph values are 0 (hence v_max is
also 0).
The implication of these divisions by 0 is an invalid y-value which
ends up at the ASS coordinates string for the graph inner content.
On linux the value ends as "nan" (luajit) or "-nan" (lua 5.1/5.2), and
on Windows it's "nan" (luajit) or "-1.#IND00" (lua 5.1/5.2), maybe due
to msvcrt's snprintf.
All these strings are wrong as ASS numbers, but due to luck in how
libass parses the coordinates, "nan" and "-nan" result in empty graph
(which looks OK for "all values are 0"), while "-1.#IND00" is parsed
as -1, which breaks the graph rendering (affects other graphs too).
One example of "all values are 0" is at page 0 (internal performance
graphs) on Windows - because the cpu metrics don't work.
So this fixes at least page 0 on Windows with lua 5.1/5.2.
While at it, move the scale calculations to one place, which now
avoids division by 0, instead of duplicating this calculation.
In the future, we can consider improving the generate_graph API:
- It needs one peak value, but takes 3 (v_max, v_avg, scale) which
are meshed into one final value.
- v_avg is only used in 1 of 6 call sites, but at the middle of the
arguments, so all other call sites need to pass explicit "nil".
- "scale" is arbitrary and used to leave some space at the top of the
graph. 5 places use 0.8, one uses 0.9. Could probably be unified.
Render subs at the output resolution, rather than the video resolution.
Uses the new APIs found in libplacebo 197+, to allow controlling the OSD
resolution even for image-attached overlays.
Also fixes an issue where the overlay state did not get correctly
updated while paused. To avoid regenerating the OSD / flushing the cache
constantly, we keep track of OSD changes and only regenerate the OSD
when the OSD state is expected to change in some way (e.g. resolution
change). This requires introducing a new VOCTRL to inform the VO when
the UPDATE_OSD-tagged options have changed.
Fixes#9744, #9524, #9399 and #9398.
The stop-screensaver option is currently limited to a simple yes/no
option. While the no option does always disable mpv trying to stop the
screensaver, yes does not mean the screensaver is always stopped. The
screensaver will be enabled again depending on certain conditions (like
if the player is paused). Simply introduce a new value for this option,
always, which does exactly what the name implies: the screensaver will
always be disabled.
This speeds up chapter name access while hovering the seekbar:
- Fetch the chapter-list property using observation rather than on
every render while hovering the bar. Property access, especially
with potentially lots of values (chapters), can be expensive-ish,
and can involve locking, so the less per-render the better.
- Sort the list once (on change) to simplify the iteration logic when
searching the chapter which matches the mouse position. It's still
O(N) (no binary search currently), but with less work.
The cached sorted list is stored at the state. While there are other
places which access this property and could use this cache, for now we
don't touch them, because they're not performance-critical (on init
for the chapter markers, on ch_{prev,next} button click for OSD).
Caching properties using observation instead of using mp.get_property
can indeed speedup other places too, but it should be part of a system
rather than implemented per-property. Maybe some day.
When utils.get_user_path was added, the expand-path command didn't
exist. Now it does, so remove the C code, make it a trivial wrapper.
Keep this function for backward compat to not break scripts, but
technically it's not required anymore.
The code assumed that the value of the profile-restore field is
"default" for such profiles, but the C implementation is such
that the field is intentionally omitted in such case.
This resulted in incorrectly trying to restore such profiles. However,
there are no stored values with profile-restore=default, so it only
resulted in a harmless warning, but otherwise behaved correctly (i.e.
nothing is restored).
Fix the condition by taking into account that missing field means
"default", so that it doesn't try to restore in such case, and
avoid the warning.
This reverts commit 04f0b0abe4.
It's not a good idea to unify the names only for visibility, while
keeping secondary-* for everything else.
This needs a bit more thought before we allow secondary sub to be
visible on its own.
Adds --sub-visibility choices 'primary-only' for only displaying the
primary subtitle track, and 'secondary-only' for only displaying
secondary subtitle track.
Removes --secondary-sub-visibility and displays a message telling the
user to use --sub-visibility=yes/primary-only instead.
These changes make it so that the default 'sub-visibility' bind 'v'
cycles through all the 'sub-visibility' choices, 'no', 'yes',
'primary-only', and 'secondary-only'.
Was tripping -Wparantheses as the && after the || was not explicitly
wrapped. However, due to operator precedence the intended effect was
still correct.
This commit is mainly for correcting the previous commit message.
The previous commit fixed an issue where [un]registering events above
the first event ID "hole" is not requested from libmpv, and that's
indeed true.
However, this had nearly zero impact in practice, because libmpv
enables all events by default anyway (except TICK).
Therefore, above the first ID "hole" [un]register requests are not
sent to libmpv, and the events just keep arriving.
But the callback functions are still added/removed correctly (at
defaults.js), and so the script is not called back even if unregister
did not actually happen with libmpv.
The only event which was affected is TICK - which is not enabled by
default as it's deprecated, and before the previous commit could not
be enabled.
So the fix is more a general correctness fix now that the IDs array
can have "holes", but with effctively no impact in practice.
Commit 63205981 removed some events but left all other event IDs at
their original values, which created "holes" at the events IDs array.
The JS backend for mp.register_event maps a name to an ID by scanning
all IDs and stopping when the name was found or a NULL name was
returned. Lua does the same except that it doesn't stop on NULL name.
Previously it was not possible to have a NULL name before the end of
the array, but now it is possible due to the enumeration holes.
Fix by skipping missing names, like lua does.
Not all deprecated symbols were removed. Only three events were removed for now
since these are not used internally.
This bumps the library version to 2.0.
Allow --keep-open=always to work with --loop-playlist, where
before this patch it would work only on the last playthrough of the
playlist. This patch allows it to work on all playthroughs.
Fixes#9470.
Previously OSD was always displayed on {ch,pl}_{next,prev} left-click,
and seekbar-hover-chapter was always enabled and with fixed format.
Now it can be controlled with:
- chapters_osd, playlist_osd: yes/no (only affects left-click).
- chapter_fmt: lua string.format template, or "no" to disable.
Fixes#4675
youtube-dl and yt-dlp both support --sub-langs and --srt-lang in
addition to --sub-lang for defining languages of subtitles. This hook
only checked for sub-lang in --ytdl-raw-options and inserted --all-subs
in its absence.
Nearly all the code base correctly references the data as constant. But
a couple of instances - fix those.
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
This seems to work on gcc, clang and mingw as-is, but I made it
conditional on __GNUC__ just in case, even though I can't figure out
which compilers we care about that don't export this define.
Also replace all instances of assert(0) in the code by MP_UNREACHABLE(),
which is a strict improvement.
The problem with the previous code - which used mp.get_user_path, is
that it returns a path even with --no-config, and even if the file
doesn't exist.
This is why we tested the "config" property, and also used
mp.utils.file_info to check that the file exists.
mp.find_config_file doesn't return a path with no-cofig and doesn't
return a path if the file doesn't exists. It's simpler and better.
Normally there was no issue, but when the code converted a deeply
nested table into an mpv node - it didn't ensure the stack has room.
Lua doesn't check stack overflow when invoking lua_push* functions,
and leaves this responsibility to the (c) user via lua_checkstack.
Normally that's not an issue because when a lua (or autofree) function
is called, it's guaranteed at least LUA_MINSTACK (20) pushes.
However, pushnode and makenode are recursive, and each iteration can
add few values at the stack (which are popped when the recursion
unwinds), so checkstack must be used on (recursive) entry.
pushnode already checked the stack, makenode did not.
This commit checks the stack at makenode as well. The value of 6
(stack places to reserve) is with some room to spare, and in pratice
each iteration needs 2-3 at most (pushnode also leaves room).
Example which could previously corrupt the stack:
utils.format_json({d1={d2={<8 more times>}}}
This uses makenode to convert the lua table into an mpv node which
the json writer uses as input, and if the depth is 10 or more then
corruption could occur. mp.command_native is also affected, as well as
any other mp/utils command which takes a lua table as input.
While at it, fix the error string which pushnode used (luaL_checkstack
uses the provided string with "Stack overflow (%s)", so the user
message only needs to be additional info).
The speedup is due to moving big part of the autofree runtime overhead
(new lua c closure) to happen once on init at af_pushcclosure, instead
of on every call. This also allows supporting upvalues trivially, even
if mpv doesn't use it currently, and is more consistent with lua APIs.
While x2 infrastructure speedup is meaningful - and similar between
lua 5.1/5.2/jit, in practice it's a much smaller improvement because
the autofree overhead is typically small compared to the "real" work
(the actual functionality, and talloc+free which is needed anyway).
So with this commit, fast functions improve more in percentage.
E.g. utils.parse_json("0") is relatively fast and is now about 25%
faster, while a slower call like mp.command_native("ignore") is now
about 10% faster than before. If we had mp.noop() which does nothing
(but still "needs" alloc/free) - it would now be about 50% faster.
Overall, it's a mild performance improvements, the API is now more
consistent with lua, and without increasing code size or complexity.
mpv doesn't have other dot files in its config dir, and it also
shouldn't be "invisible".
The new name ~~/init.js now replaces ~~/.init.js
While mpv usually deprecates things before outright removing them,
in this case the old (dot) name is replaced without deprecation:
- It's a bad idea to execute hidden scripts, even if at a config dir,
and we don't want to do that for the next release cycle too.
- We warn if the old (dot) name exists and the new name doesn't,
which should be reasonably visible for affected users.
- It's likely niche enough to not cause too much pain.
If for some reason both names are needed, e.g. when using also an old
mpv versions, then the old name could be symlinked to the new one, or
simply have one line: `require("~~/init")` to load the new name, while
a new mpv version will load (only) the new name without warning.
This behavior is more convenient and allows profile conditions like:
[video]
profile-cond=get('current-tracks/video/image') == false
[image]
profile-cond=get('current-tracks/video/image')
Otherwise, these profiles have to be manually applied and restored in a
script.
The note about discouraging the use of current-tracks in scripts is
removed, because it makes people avoid using this convenient property.
It was added in 720bcd79d0 without leaving an explanation of why you
shouldn't use it, and the only reason seems to be that it doesn't work
with lavfi-complex, but this commit changes that.
This exposes whether a video track is detected as an image, which is
useful for profile conditions, property expansion and lavfi-complex.
The lavf demuxer sets image to true when the existing check detects an
image.
When the lavf demuxer fails, the mf one guesses if the file is an image
by its extension, so sh->image is set to true when the mf demuxer
succeds and there's only one file.
The mkv demuxer just sets image to true for any attached picture.
The timeline demuxer just copies the value of image from source to
destination. This sets image to true for attached pictures, standalone
images and images added with !new_stream in EDL playlists, but it is
imperfect since you could concatenate multiple images in an EDL playlist
(which should be done with the mf demuxer anyway). This is good enough
anyway since the comment of the modified function already says it is
"Imperfect and arbitrary".
The custom init script should be considered a configuration file, and
as such it should be ignored when the user wants vanilla mpv - and now
it is ignored with --no-config.
Before this commit, animation-end was handled at render(), however,
it's not called on idle, which resulted in state.anitype ~= nil, with
nothing to reset it during idle, which caused in an infinite tick()
loop (starts on first mouse move).
Now tick resets the animation on idle, and also, as a safety measure,
if we're past 1s after the animation deadline.
The safety measure is because the osc states are complex, and it's
easier to detect a "we really shouldn't be animating now" at tick()
itself rather than detecting the exact states where animation should
be reset. Generally, the safety mmeasure is not needed.
Unfortunately, this functionality in large part based on a struct
member that was made private in FFmpeg/FFmpeg@7489f63281
in May. Unfortunately, this was not noticed during review.
This reverts commit 0862664ac9.
This exposes whether a video track is detected as an image. This is
useful for profile conditions, property expansion and lavfi-complex, and
is more accurate than any detection even Lua scripts can perform, since
they can't differentiate between images and videos without container-fps
and audio and with duration 1 (which is the duration set by the mf
demuxer with the default --mf-fps=1).
The lavf demuxer image check is moved to where the number of frames is
available for comparison, and is modified to check the number of frames
and duration instead of the video codec. This doesn't misdetect videos
in a codec commonly used for images (e.g. mjpeg) as images, and can
detect images in a codec commonly used for videos (e.g. 1-frame gifs).
pix files are also now detected as images, while before they weren't
since the condition was checking if the AVInputFormat name ends with
_pipe, and alias_pix doesn't.
Both nb_frames and codec_info_nb_frames are checked because nb_frames is
0 for some video codecs (hevc, av1, vc1, mpeg1video, vp9 if forcing
--demuxer=lavf), and codec_info_nb_frames is 1 for others (mpeg, mpeg4,
wmv3).
The duration is checked as well because for some uncommon codecs and
containers found in FFMpeg's FATE suite, libavformat returns nb_frames =
0 and codec_info_nb_frames = 1. For some of them it even returns
duration = 0, so they are blacklisted in order to never be considered
images.
The extra codecs that would have to be blacklisted without checking the
duration are AV_CODEC_ID_4XM, AV_CODEC_ID_BINKVIDEO,
AV_CODEC_ID_DSICINVIDEO, AV_CODEC_ID_ESCAPE130, AV_CODEC_ID_MMVIDEO,
AV_CODEC_ID_NUV, AV_CODEC_ID_RL2, AV_CODEC_ID_SMACKVIDEO and
AV_CODEC_ID_XAN_WC3, while the containers are film-cpk, ivf and ogg.
The lower limit for duration is 10 because that's the duration of
1-frame gifs.
Streams with codec_info_nb_frames 0 are not considered images because
vp9 and av1 have nb_frames = 0 and codec_info_nb_frames = 0, and we
can't rely on just the duration to detect them because they could be
livestreams without an initial duration, and actually even if we could
for these codecs libavformat returns huge negative durations like
-9223372036854775808.
Some more images in the FATE suite that are really frames cut from a
video in an uncommon codec and container, like cine/bayer_gbrg8.cine,
could be detected by allowing codec_info_nb_frames = 0, but then any
present and future video codec with nb_frames = 0 and
codec_info_nb_frames = 0 would need to be added to the blacklist. Some
even have duration > 10, so to detect these images the duration check
would have to be removed, and all the previously mentioned extra codecs
and containers would have to be added added to the blacklists, which
means that images that use them (if they exist anywhere) will never be
detected. These FATE images aren't detected as such by mediainfo either
anyway, nor can a Lua script reliably detect them as images since they
have container-fps and duration > 0 and != 1, and you probably will
never see files like them anywhere else.
For attached pictures the lavf demuxer always set image to true, which
is necessary because they have duration > 10. There is a minor change in
behavior for which audio with attached pictures now has mf-fps as
container-fps instead of unavailable, but this makes it consistent with
external cover art, which was already being assigned mf-fps.
When the lavf demuxer fails, the mf one guesses if the file is an image
by its extension, so sh->image is set to true when the mf demuxer
succeds and there's only one file.
Even if you add a video's file type to --mf-type and open it with the mf
protocol, only the first frame is used, so setting image to true is
still accurate.
When converting an image to the extensions listed in demux/demux_mf.c,
tga and pam files are currently the only ones detected by the mf demuxer
rather than lavf. Actually they are detected with the image2 format, but
it is blacklisted; see d0fee0ac33.
The mkv demuxer just sets image to true for any attached picture.
The timeline demuxer just copies the value of image from source to
destination. This sets image to true for attached pictures, standalone
images and images added with !new_stream in EDL playlists, but it is
imperfect since you could concatenate multiple images in an EDL playlist
(which should be done with the mf demuxer anyway). This is good enough
anyway since the comment of the modified function already says it is
"Imperfect and arbitrary".
Previously, loading ~~/.init.js was inside a try block, in order to
quietly ignore errors if the file doesn't exist.
However, that also prevented any real errors from showing up even when
the file does exist, and the script continued as if everything is OK,
while in fact the custom init script didn't complete correctly.
Now we first check if the file exists, and then load it without
try/catch, so that any error shows up normally (and abort the script).
Because youtube-dl is inactive and the yt-dlp fork is becoming more
popular, make mpv use yt-dlp without any extra configuration.
yt-dlp is ordered before youtube-dl because it's more obscure, so users
who have yt-dlp installed are more likely to want to use it rather than
youtube-dl.
Fixes#9208.
The "cycle" command _declaration_ enables repeatability by default,
however, the command handler applies additional logic to augment it,
based on the property which is being cycled - using some guesswork.
Specifically, properties with discrete values are not repeatable
(like sub or osd-level), while continuous properties are repeatable
(like volume).
Previously, the "repeatable" prefix could not override this additional
logic.
This commit changes the behavior so that the logic affects only the
default repeatability (still based on the property like before),
however, the "repeatable" prefix is now allowed to override it.
When changing video track with subtitles with unknown duration, they
aren't shown until you seek, cycle sub back and forth, or apply a video
filter. This is caused by reinit_video_chain_src() calling
reset_subtitle_state() -> sub/sd_ass.c:reset() -> ass_flush_events()
when ctx->duration_unknown is true.
The ass_flush_events() call was added in a714f8e so subs with unknown
duration wouldn't multiply on seek, i.e. when reset_subtitle_state() is
called from reset_playback_state(). So keep calling it from there, and
in reinit_video_chain_src() use just term_osd_set_subs(mpctx, NULL)
instead to clear any subtitles printed to the terminal. The
reset_subtitle_state() call was added in c1ac97b to "reset the state
correctly when switching between video/no-video", but with it removed I
no longer notice any issue doing that.
29e15e6248 prefixed youtube-dl's subs url with an edl prefix to not
download them until they're selected, which is useful when there are
many sub languages. But this prefix broke the alignment of secondary
subs, which would overlap the primary subs instead of always being
placed at the top. This can be tested with
--sub-file='edl://!no_clip;!delay_open,media_type=sub;secondary_sub.srt'
When a sub is added, sub.c:reinit_sub() is called. This calls in
init_subdec() -> dec_sub.c:sub_create() -> init_decoder() ->
sd_ass:init(). Then reinit_sub() calls
sub_control(track->d_sub, SD_CTRL_SET_TOP, &(bool){!!order}) which sets
sd_ass_priv.on_top = true for secondary subs.
But for EDL subs the real sub is initialized again when in
dec_sub.c:sub_read_packets() is_new_segment() returns true and
update_segment() is called, or when sub_get_bitmaps() calls
update_segment(). update_segment() then calls init_decoder(), which
calls sd_ass:init(), so sd_ass_priv is reinitialized, and its on_top
property is left false. This commit sets it to true again.
For URLs that need to be downloaded it seems that the update_segment()
call that reinitializes sd_ass_priv is always the one in
sub_read_packets(), but with local subs sub_get_bitmaps() is usually
called earlier (though there shouldn't be a reason to use the EDL URL
for local subs), so I added the order parameter to sub_create(), rather
than adding it to all of update_segment(), sub_read_packets() and
sub_get_bitmaps().
Also removes the cast to bool in the other sub_control call, since
sub/sd_ass.c:control already casts arg to bool when cmd is
SD_CTRL_SET_TOP.
