HTML help that is shown instead of the plain help text where appropriate
and supported by the interface. The command-line help output and the Qt
GUI plugin tooltips show the plain help text, while the Qt GUI plugin
preferences page displays the HTML help, if available, falling back to
displaying the plain help otherwise.
Allows to present the help text in a more structured and expressive way.
Also useful for out-of-tree plugins, in case they want to link to
plugin's home page, bug tracker, donation page, etc.
For the supported HTML subset, see
https://doc.qt.io/qt-6/richtext-html-subset.htmlFixes#27798
This commit moves the remaining callbacks of stream/demux: pf_read/
pf_block/pf_seek/pf_readdir and pf_demux into their operations table,
aiming at unifying all the callbacks under a unique place.
This is a follow-up to the introduction of typed controls callbacks
for stream and demux.
Like for the typed controls callbacks if no operation is provided
(ie, stream_t/demux_t.ops is NULL) by a module, the legacy pf_* will be
used instead as a fallback.
The commit doesn't migrate any of modules yet.
`restrict` tells the compiler that the tombstone pointer is the only way
to access the variable pointed by it. This is not case with multi-threading.
From the C11 specs:
§ 6.7.3 item 8
An object that is accessed through a restrict-qualified pointer has
a special association with that pointer. This association, defined
in 6.7.3.1 below, requires that all accesses to that object use,
directly or indirectly, the value of that particular pointer.
§ 6.7.3.1 item 4
Every other lvalue used to access the value of X shall also have its
address based on P.
Also set the pointer to const.
Fixes the following race condition when closing live555:
Thread 80 (Thread 28393.4880):
0 0x0000007953dbebbc in syscall () from /home/tom/work/git/libvlcjni/libvlc/.gdb/obj/local/arm64-v8a/system/lib64/libc.so
1 0x0000007855d2c0ec in sys_futex (addr=0x89, op=137, val=0, to=0x0, addr2=0x0, val3=-1) at ../../src/linux/thread.c:82
2 vlc_futex_wait (addr=0x89, flags=0, val=0, to=0x0) at ../../src/linux/thread.c:93
3 vlc_atomic_wait (addr=0x89, val=0) at ../../src/linux/thread.c:109
4 0x0000007855d20e9c in vlc_cond_wait (cond=cond@entry=0x7829f26ce8, mutex=mutex@entry=0x7829f26cd8) at ../../src/misc/threads.c:298
5 0x0000007855d42244 in vlc_queue_Wait (q=0x7829f26cc0) at ../../include/vlc_queue.h:122
6 vlc_queue_DequeueKillable (q=0x7829f26cc0, tombstone=0x7829f26d00) at ../../include/vlc_queue.h:248
7 vlc_stream_fifo_Block (s=<optimized out>, eof=0x78709a8838) at ../../src/input/stream_fifo.c:75
8 0x0000007855cfa160 in vlc_stream_ReadRaw (s=s@entry=0x7819411360, buf=buf@entry=0x78c4393c80, len=len@entry=188) at ../../src/input/stream.c:466
9 0x0000007855cf9fe0 in vlc_stream_ReadPartial (s=s@entry=0x7819411360, buf=buf@entry=0x78c4393c80, len=len@entry=188) at ../../src/input/stream.c:489
10 0x0000007855cfad44 in vlc_stream_Read (s=<optimized out>, buf=0x78c4393c80, len=188) at ../../src/input/stream.c:504
11 vlc_stream_Block (s=0x7819411360, size=<optimized out>) at ../../src/input/stream.c:909
12 0x0000007855f1fe5c in ReadTSPacket (p_demux=p_demux@entry=0x78c42c0ce0) at ../../modules/demux/mpeg/ts.c:1808
13 0x0000007855f1de30 in Demux (p_demux=<optimized out>) at ../../modules/demux/mpeg/ts.c:649
4 0x0000007855d41e4c in vlc_demux_chained_Thread (data=0x7829f26c70) at ../../src/input/demux_chained.c:96
15 0x0000007855d2d5b8 in joinable_thread (data=0x7823341ea0) at ../../src/android/thread.c:96
16 0x0000007953e217c4 in __pthread_start(void*) () from /home/tom/work/git/libvlcjni/libvlc/.gdb/obj/local/arm64-v8a/system/lib64/libc.so
17 0x0000007953dc41ac in __start_thread () from /home/tom/work/git/libvlcjni/libvlc/.gdb/obj/local/arm64-v8a/system/lib64/libc.so
Thread 79 (Thread 28393.4875):
0 0x0000007953dbebbc in syscall () from /home/tom/work/git/libvlcjni/libvlc/.gdb/obj/local/arm64-v8a/system/lib64/libc.so
1 0x0000007953e21d98 in pthread_join () from /home/tom/work/git/libvlcjni/libvlc/.gdb/obj/local/arm64-v8a/system/lib64/libc.so
2 0x0000007855d2d204 in vlc_join (handle=0x7823341ea0, result=0x0) at ../../src/android/thread.c:147
3 0x0000007855d4202c in vlc_demux_chained_Delete (dc=0x7829f26c70) at ../../src/input/demux_chained.c:167
4 0x0000007855d3d92c in Close (p_this=<optimized out>) at ../../modules/access/live555.cpp:505
5 0x0000007855cb49dc in module_unneed (obj=obj@entry=0x78194110c0, module=0x78c83b0520) at ../../src/modules/modules.c:305
6 0x0000007855ceae78 in vlc_access_Destroy (access=0x78194110c0) at ../../src/input/access.c:54
7 0x0000007855cf958c in vlc_stream_Delete (s=0x78194110c0) at ../../src/input/stream.c:150
8 0x0000007855ce4954 in demux_Delete (demux=0x78709a8d60) at ../../include/vlc_demux.h:291
9 InputSourceDestroy (in=0x781a3aa780) at ../../src/input/input.c:2852
10 0x0000007855ce39f0 in End (p_input=p_input@entry=0x7863073c00) at ../../src/input/input.c:1413
11 0x0000007855ce0620 in Run (data=0x7863073c00) at ../../src/input/input.c:431
12 0x0000007855d2d5b8 in joinable_thread (data=0x78231b02c0) at ../../src/android/thread.c:96
13 0x0000007953e217c4 in __pthread_start(void*) () from /home/tom/work/git/libvlcjni/libvlc/.gdb/obj/local/arm64-v8a/system/lib64/libc.so
14 0x0000007953dc41ac in __start_thread () from /home/tom/work/git/libvlcjni/libvlc/.gdb/obj/local/arm64-v8a/system/lib64/libc.so
This commit introduce a typed virtual table for operations on demux,
aiming at replacing the legacy pf_control() callback which is using
va_list. As a counterpart to the typed virtual table, typed methods
are also introduce.
The operations can be implemented by the modules directly right now
and will be used when possible. This is done to provide type safety
at every level.
When no operation is provided (ie, demux_t.ops is NULL) by a module
implementation, the legacy pf_control will be used instead as a
fallback.
The commit doesn't migrate any of modules yet.
Do not allow messing with the include path and end up using other
includes.
Any C compiler should respect the "" meaning including local files
before looking in other pathes.
This commit introduce a typed virtual table for operations on stream,
aiming at replacing the legacy pf_control() callback which is using
va_list. As a counterpart to the typed virtual table, typed methods
are also introduce.
The operations can be implemented by the modules directly right now
and will be used when possible. This is done to provide type safety
at every level.
When no operation is provided (ie, stream_t.ops is NULL) by a module
implementation, the legacy pf_control will be used instead as a
fallback.
The commit doesn't migrate any of access/stream_filter/… modules yet.
The commit also doesn't introduce the demux specific callbacks yet.
Steve Lhomme