| Commit message (Collapse) | Author | Age | Files | Lines |
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Always true, because a few lines above it checks for the same thing.
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C11 can access atomic variables normally (in which case they use the
strictest memory access semantics). But the mpv stdatomic wrapper for
C99 compilers does not allow it, because it couldn't give any
guarantees. This means we always need to access them with atomic macros.
While we're at, use relaxed semantics for the m_config_cache field,
since because it's accessed from a single thread only (essentially
used in a non-atomic way). Switch the comparison arguments to make the
formatting look slightly less weird.
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Although the new code actually fires update notifications only when
needed, m_config_cache_update() itself returned a rather coarse change
value, which could indicate change even if none of the cached options
were changed. On top of that, some code (like vo_gpu) calls the update
function on every frame, which would reconfigure the renderer even on
unrelated option changes.
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Options with dynamic memory allocations (such as strings) require some
care. They need to be fully copied on initialization, and if a static
default value was declared, we must not free that value either.
Instead of going through the entire thing even for simple types like
integers, really run it only for options with dynamic allocations. To
distinguish types which use dynamic allocations, we can use the fact
that they require a free callback (otherwise they would leak). As a
result initialization of simple types becomes chaper, and the init
function does nothing at all if src==dst for a simple type.
(It's funny how mplayer had M_OPT_TYPE_DYNAMIC since 2002, until we
replaced it by the same heuristic as used here in commit 3bb134969eb6.
It's also funny how the new check was used only for some asserts, and
finally removed in commit 7539928c1c. I guess at this time I felt like
having uniform code was more important than pointless
micro-optimizations.)
The src==NULL case is removed because it can't happen.
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Just wastes memory (a few KB, because there are so many options).
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Actually rewrite most of the option management code. This affects how
options are allocated, and how thread-safe access to them is done.
One thing that is nicer is that creating m_config_cache does not need to
ridiculously recreate and store the entire option list again. Instead,
option metadata and option storage are now separated. m_config contains
the metadata, and m_config_data all or parts of the actual option
values. (m_config_cache simply uses the metadata part of m_config, which
is immutable after creation.)
The mentioned hack was introduced in commit 1a2319f3e4cc4, and is the
global state around g_group_mutex. Although it was "benign" global
state, it's good that it's finally removed.
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For some reason shadow_offset is a int16_t variable (to save some space
or something), which means the static part of the entire option list
must be below 32KB. This is fine, but still add a check against
overflows. (Currently it's 3.6KB. This does not include dynamic
allocations like strings.)
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Most options starting with --no-<name> are automatically translated to
--<name>=no. Make the code slightly nicer by using a flag instead of
explicitly comparing option types. Also fix an issue that made the
option parser print nonsense error messages for if --no-... was used for
options which don't support it.
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There is some craziness here: the function allocates m_config_cache,
which in turn allocates the actual option struct, which is what the
function returns. The user would expect to be able to use talloc_free()
to deallocate everything. Of course this didn't work, because the
returned pointer is not the root parent in the talloc tree.
But with some additional talloc craziness, this can be fixed. We
rearrange the parent pointers such that freeing the option struct will
free m_config_cache first, which uninits the contents in the option
struct, but fortunately not the option struct itself.
This change should simplify API use on the caller side, and reduce
surprises.
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mp_read_option_raw() should not print the deprecation warning if the
option is deprecated. This change also means you can't pass an alias
to the function, but all existing uses should be fine.
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This is part of trying to get rid of --af-defaults, and the af
resample filter.
It requires a complicated mechanism to set the defaults on the resample
filter for backwards compatibility.
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Remove them from the big MPOpts struct and move them to their sub
structs. In the places where their fields are used, create a private
copy of the structs, instead of accessing the semi-deprecated global
option struct instance (mpv_global.opts) directly.
This actually makes accessing these options finally thread-safe. They
weren't even if they should have for years. (Including some potential
for undefined behavior when e.g. the OSD font was changed at runtime.)
This is mostly transparent. All options get moved around, but most users
of the options just need to access a different struct (changing sd.opts
to a different type changes a lot of uses, for example).
One thing which has to be considered and could cause potential
regressions is that the new option copies must be explicitly updated.
sub_update_opts() takes care of this for example.
Another thing is that writing to the option structs manually won't work,
because the changes won't be propagated to other copies. Apparently the
only affected case is the implementation of the sub-step command, which
tries to change sub_delay. Handle this one explicitly (osd_changed()
doesn't need to be called anymore, because changing the option triggers
UPDATE_OSD, and updates the OSD as a consequence). The way the option
value is propagated is rather hacky, but for now this will do.
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I've decided that MP_TRACE means “noisy spam per frame”, whereas
MP_DBG just means “more verbose debugging messages than MSGL_V”.
Basically, MSGL_DBG shouldn't create spam per frame like it currently
does, and MSGL_V should make sense to the end-user and provide mostly
additional informational output.
MP_DBG is basically what I want to make the new default for --log-file,
so the cut-off point for MP_DBG is if we probably want to know if for
debugging purposes but the user most likely doesn't care about on the
terminal.
Also, the debug callbacks for libass and ffmpeg got bumped in their
verbosity levels slightly, because being external components they're a
bit less relevant to mpv debugging, and a bit too over-eager in what
they consider to be relevant information.
I exclusively used the "try it on my machine and remove messages from
MSGL_* until it does what I want it to" approach of refactoring, so
YMMV.
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We want e.g. --opengl-shaders-append=foo to resolve to the new option,
all while printing an option name. --opengl-shader is a similar case.
These options are special, because they apply "actions" on actual
options by specifying a suffix. So the alias/deprecation handling has to
be part of resolving the actual option from prefix and suffix.
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So far, we had a thread-safe way to read options, but no option update
notification mechanism. Everything was funneled though the main thread's
central mp_option_change_callback() function. For example, if the
panscan options were changed, the function called vo_control() with
VOCTRL_SET_PANSCAN to manually notify the VO thread of updates. This
worked, but's pretty inconvenient. Most of these problems come from the
fact that MPlayer was written as a single-threaded program.
This commit works towards a more flexible mechanism. It adds an update
callback to m_config_cache (the thing that is already used for
thread-safe access of global options).
This alone would still be rather inconvenient, at least in context of
VOs. Add another mechanism on top of it that uses mp_dispatch_queue, and
takes care of some annoying synchronization issues. We extend
mp_dispatch_queue itself to make this easier and slightly more
efficient.
As a first application, use this to reimplement certain VO scaling and
renderer options. The update_opts() function translates these to the
"old" VOCTRLs, though.
An annoyingly subtle issue is that m_config_cache's destructor now
releases pending notifications, and must be released before the
associated dispatch queue. Otherwise, it could happen that option
updates during e.g. VO destruction queue or run stale entries, which is
not expected.
Rather untested. The singly-linked list code in dispatch.c is probably
buggy, and I bet some aspects about synchronization are not entirely
sane.
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This is really obnoxious. --include parses into the default profile, but
when used on the command line, it did never get applied. So we have to
apply it when the exact conditions for this are met.
Fixes #4673.
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See commit e4bc563fd2dcf for more information.
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Fucking bullshit.
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Remove the various redundant m_config_set_option* calls, rename the
remaining one to m_config_set_option_cli(), and merge the
m_config_parse_option() function.
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These are not "really" separate actions, but on the command line they're
obserable as such. So it would be a good idea to list them too.
Adds about 117 options (holy fuck).
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This affects options like --vf or --display-tags. These used a "*"
suffix to match all options starting with a specific name, and handled
the rest in the option parser. Change this to remove the "*" special
case, and require every option parser to declare a list of allowed
suffixes via m_option_type.actions.
The new way is conceptually simpler, because we don't have to account
for the "*" in a bunch of places anymore, and instead everything is
centrally handled in the CLI part of the option parser, where it's
actually needed.
It automatically enables suffixes like -add for a bunch of other
stringlist options.
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You could do mpv_set_option(h, "no-fs", ""), which would behave like
"--no-fs" on the command line. At one point, this had to be emulated for
compatibility, and printed a deprecation warning. This was almost a year
ago, so remove it.
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Certain options, such as --profile, --help, and many others require
special-handling, because they don't fit conceptually into the option
and property model. They don't store data, but perform actions.
This caused the situation that profiles could not be set when using
libmpv in encoding mode (although you should probably not used libmpv in
encoding mode). Using libmpv always ends up in calling
m_config_set_option_raw_direct(), while --profile was handled in
m_config_parse_option().
Solve this by moving the handling of this from m_config_parse_option()
to m_config_set_option_raw_direct(). Actually we just stuff most of this
into m_config_handle_special_options(), which is only called by the
aforementioned function.
Strangely this also means that the --h/--help option declarations need
to be changed, because they used OPT_PRINT, and now the option "parser"
is always invoked before the special code. Thus, make them a string.
Them being OPT_PRINT was apparently always redundant. (The other option
declarations are moved for cosmetic purposes only.)
The most weird change is how co->data==NULL is handled. We now allow
passing down involved options to m_config_set_option_raw_direct(). The
thing is that we don't want them to error if the command line parser is
using them (with special handling done there), while all other code
paths should raise an error. We try using M_SETOPT_FROM_CMDLINE to
distinguish these cases.
Note that normal libmpv users are supposed to use the "apply-profile"
command instead.
This probably contains a bunch of bugs, which you should report.
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All authors of the current code have agreed (as far as this commit
requires).
options.c/options.h will take more effort, because it contains all the
option declarations, and thus is touched extremely often.
m_option.c is technically still GPL, because of commit 2c82d5a1d85378dd0
(michael has agreed to LGPL, but only once the core of mpv is LGPL).
The geometry parsing code in m_option.c was originally by someone who
could not be reached. However, it was heavily rewritten anyway, and only
the syntax remains (i.e. not copyright-relevant).
parse_commandline.c contains a change by "adland" (commit 1d0ac71ae8ba),
who could not be reached - this this specific part is GPL only.
Fortunately, it matters only for DVD (and even then is more like a hack,
but whatever).
There are some other relevant changes, but they have all been reverted,
moved somewhere else, deleted, or replaced.
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Also "announce" the plans to undeprecate it with changed semantics
later. The deprecation period is needed to warn script authors and
client API users (etc.) of the change.
This is done because everyone seems to expect --loop to loop the current
file, not the playlist. Even in cases when only 1 file is on the
playlist, the --loop-file semantics seem to be preferred.
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Does not match a shell pattern anymore. Instead, a simple sub-string
search is done.
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Remove more stuff that was needed only for legacy suboptions.
One user-visible change is that parent-options like --tv are now not
visible anymore. They lead to a special error message when used before,
but now they're simply not part of the option list anymore.
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Long planned. Leads to some sanity.
There still are some rather gross things. Especially g_groups is ugly,
and a hack that can hopefully be removed. (There is a plan for it, but
whether it's implemented depends on how much energy is left.)
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A bit of sanity, although a very small one.
--vo sub-options are not affected by this yet.
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These accidentally did nothing. They must be handled explicitly.
Example: --vo=vdpau:no-composite-detect
(Can't wait to get rid of this crap.)
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Seems like this confused users quite often.
Instead of --profile=pseudo-gui, --player-operation-mode=pseudo-gui now
has to be used to invoke pseudo GUI mode. The old way still works, and
still behaves in the old way.
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I would have been fine with this, but now I want to add another flag,
and the duplication would become more messy than having a strange
function for deduplication.
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With the merging of options and properties, the mpv_set_option()
function is close to being useless, and mpv_set_property() can be used
for everything instead. There are certain conflicts remaining, which are
explained in depth in the docs. For now, none of this should affect
existing code using the client API.
Make mpv_set_property() redirect to mpv_set_option() before
initialization.
Remove some options marked as M_OPT_FIXED. The "pause" and "speed"
options cannot be written anymore without the playloop being notified by
it, so the M_OPT_FIXED does nothing. For "vo-mmcss-profile", the problem
was lack of synchronization, which has been added. I'm not sure what the
problem was with "frames" - I think it was only marked as M_OPT_FIXED
because changing it during playback will have no effect. Except for
pause/speed, these changes are needed to make them writable as
properties after mpv_initialize().
Also replace all remaining uses of CONF_GLOBAL with M_OPT_FIXED.
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Extend the flag-based notification mechanism that was used via
M_OPT_TERM. Make the vo_opengl update mechanism use this (which, btw.,
also fixes compilation with OpenGL renderers forcibly disabled).
While this adds a 3rd mechanism and just seems to further the chaos, I'd
rather have a very simple mechanism now, than actually furthering the
mess by mixing old and new update mechanisms. In particular, we'll be
able to remove quite some property implementations, and replace them
with much simpler update handling. The new update mechanism can also
more easily refactored once we have a final mechanism that handles
everything in an uniform way.
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Some properties had a different type from their equivalent options (such
as mute, volume, deinterlace, edition). This wasn't really sane, as raw
option values should be always within their bounds. On the other hand,
these properties use a different type to reflect runtime limits (such as
range of available editions), or simply to improve the "UI" (you don't
want to cycle throuhg the completely useless "auto" value when cycling
the "mute" property).
Handle this by making them always return the option type, but also
allowing them to provide a "constricted" type, which is used for UI
purposes. All M_PROPERTY_GET_CONSTRICTED_TYPE changes are related to
this.
One consequence is that you can set the volume property to arbitrary
high values just like with the --volume option, but using the "add"
command it still restricts it to the --volume-max range.
Also deprecate --chapter, as it is grossly incompatible to the chapter
property. We pondered renaming it to --chapters, or introducing a more
powerful --range option, but concluded that --start --end is actually
enough.
These changes appear to take care of the last gross property/option
incompatibilities, although there might still be a few lurking.
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All option write accesses are now put through the property interface,
which means runtime option value verification and runtime updates are
applied. This is done even for command line arguments and config files.
This has many subtle and not-so-subtle consequences. The potential for
unintended and intended subtle or not-subtle behavior changes is very
large.
Architecturally, this is us literally jumping through hoops. It really
should work the other way around, with options being able to have
callbacks for value verification and applying runtime updates. But this
would require rewriting the entirety of command.c. This change is more
practical, and if anything will at least allow incremental changes.
Some options are too incompatible for this to work - these are excluded
with an explicit blacklist.
This change fixes many issues caused by the mismatch between properties
and options. For example, this fixes #3281.
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Some pseudo-options do not have associated storage, which made
m_config_set_option_raw() return failure.
Regression due to commit d1d5e9dd.
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There were multiple values under M_OPT_EXIT (M_OPT_EXIT-n for n>=0).
Somehow M_OPT_EXIT-n either meant error code n (with n==0 no error?), or
the number of option valus consumed (0 or 1). The latter is MPlayer
legacy, which left it to the option type parsers to determine whether an
option took a value or not. All of this was changed in mpv, by requiring
the user to use explicit syntax ("--opt=val" instead of "-opt val").
In any case, the n value wasn't even used (anymore), so rip this all
out. Now M_OPT_EXIT-1 doesn't mean anything, and could be used by a new
error code.
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This makes m_config_set_option_raw() the function that is always called
on the lowest level (as leaf function for all other functions).
To do this, m_config_parse_option() has to do something special to deal
with "impure" options like --vf-add, which work on the previous option
value, instead of fully replacing it. m_config_set_option_raw() itself
always completely replaced the previous value.
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This meant "cannot be used as per-file option" (wrt. playlist items).
Doesn't make too much sense anymore, especially gi |
