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Remove trailing whitespace found by this command:
find -name '*.[ch]' | xargs grep "[[:space:]]$"
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After we've been hit by Large File Support problems several times in
the past week (which only occur on 32 bit platforms, which I don't
have), this is yet another attempt to fix the issue.
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Add a "mode" argument to open_cloexec() instead.
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Added the "fd_util" library, which attempts to use the new thread-safe
Linux system calls pipe2(), accept4() and the options O_CLOEXEC,
SOCK_CLOEXEC. Without these, it falls back to FD_CLOEXEC, which is
not thread safe.
This is particularly important for the "pipe" output plugin (and
others, such as JACK/PulseAudio), because we were heavily leaking file
descriptors to child processes.
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Don't let the mixer plugin "override" the libpulse callbacks.
Instead, add a "mixer" attribute to the pulse_output struct, and call
the mixer on all interesting events.
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It's possible to have a mixer implementation which does not explicitly
need the methods open() and close().
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Moved the check from pulse_mixer_open() to pulse_mixer_update().
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This is a complete rewrite of the PulseAudio output plugin. It uses
the asynchronous API, which gives us more control over everything.
Additionally, it connects to the PulseAudio server on startup, and
keeps this connection up while MPD runs. During pause, instead of
closing the stream, it enables "cork".
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This allows the mixer object to access its associated audio output
object.
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This mixer plugin may be used instead of the traditional global
software mixer. It integrates with the "volume" filter plugin, and
can control the software volume of an audio output which has no
hardware mixer.
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strcasecmp() is locale dependent, making it a bad choice for internal
string comparisons.
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This allows you to select controls with duplicate names.
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Using two different kinds of locks may result in a race condition with
a deadlock. The libpulse callbacks need no locks at all, because the
mainloop object can be assumed to be already locked.
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snd_config_update_free_global() frees cached ALSA configuration. This
keeps valgrind a little bit more quiet. This patch moves the call
from the open() method into the finish() method, which seems more
natural: it allows the use of the config cache, and improves the
cleanup phase.
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Added an assertion in mixer_set_volume(). Removed the range checks
from the ALSA and OSS plugins.
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There are numerous race conditions between the libpulse thread
(pulse_mixer.c callbacks) and the rest of MPD. Protect the volatile
attributes of the pulse_mixer struct with a mutex to fix that.
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Eliminate one indent level. Also remove several debug useless debug
messages.
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Those parameters are used after all.
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Don't mess with pulse_mixer.volume for setting the volume. This
variable should only be used to transfer the current volume from
sink_input_vol() to pulse_mixer_get_volume().
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The pa_context_get_sink_input_info() function is asynchronous, and
after it returns, libpulse does not guarantee that the operation has
completed yet; in fact, it is not likely. Explicitly wait for the
operation to complete.
The code for the new pulse_wait_for_operation() function was inspired
by mplayer and xine code.
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Use the same code style as the rest of MPD.
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Don't initialize attributes which are only used in an open mixer. As
long as nobody accesses them, their values are uninitialized and
undefined.
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The pm->volume attribute was allocated in pulse_mixer_init(), but is
never freed. This leaks memory. Instead of adding the g_free() call
to pulse_mixer_finish(), let's just make "volume" a static attribute
of the pulse_mixer struct. That is easier to deal with.
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When the MPD core knows that the pulse mixer is open, pm->mainloop and
pm->context must be non-NULL.
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The attributes "online" and "index" were not properly reinitialized
after a close/open cycle.
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Nobody needs to modify these strings. We can make them const, and
convert config_dup_block_string() to config_get_block_string(). This
also fixes memory leaks in the pulse mixer.
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The conf.h functions deal well with config_param==NULL and will return
the specified default value then.
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When the mixer initialization fails, we have to free the libpulse
objects we have already created, to prevent resource leaks.
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It's illegal to return from pulse_mixer_setup() without unlocking the
main loop. In the error handling, that unlock() call was missing.
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Prepare for adding proper error handling.
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"volume_set" is an attribute which becomes undefined when the mixer is
closed. That means, it must be initialized each time the mixer is
opened.
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The MPD core guarantees that methods are always invoked in a
consistent state. This means we can remove lots of checks from the
volume methods.
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Instead of replacing NULL with the default device in the open()
method, pass the default device to config_get_block_string().
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Use config_get_block_string() instead of config_dup_block_string().
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Detect misconfiguration during MPD startup.
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The MPD core guarantees that methods are always invoked in a
consistent state. This means we can remove lots of checks from the
volume methods.
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strncasecmp() is locale dependent, but we only need ASCII here.
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Instead of replacing NULL with the default path in the open() method,
pass the default path to config_get_block_string().
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Use config_get_block_string() instead of config_dup_block_string().
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When getting or setting the volume fails, the MPD core close the
mixer. Moved the duplicated code from the mixer plugins.
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Remember if a mixer object is open or closed. Don't call open() again
if it is already open. This guarantees that the mixer plugin is
always called in a consistent state, and we will be able to remove
lots of checks from the implementations.
To support mixers which are automatically opened even if the audio
output is still closed (to set the volume before playback starts),
this patch also adds the "global" flag to the mixer_plugin struct.
Both ALSA and OSS set this flag, while PULSE does not.
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The mixer state is defined as offline only if the associated stream is removed.
Signed-off-by: David Guibert <david.guibert@gmail.com>
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when the mixer is closed,
- the mainloop is stopped.
- the context is disconnected.
- then the mainloop is freed.
Signed-off-by: David Guibert <david.guibert@gmail.com>
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This updates the copyright header to all be the same, which is
pretty much an update of where to mail request for a copy of the GPL
and the years of the MPD project. This also puts all committers under
'The Music Player Project' umbrella. These entries should go
individually in the AUTHORS file, for consistancy.
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This patch follows the commit 21bb10f4b.
>From Max Kellermann:
> I removed the daemonization changes in main.c. Please explain why you
> changed that. If you need it for some reason, make that a separate
> patch with a good description of your rationale.
> That's the biggest flaw of your code: it opens the mixer device in the
> init() method, while the open() method is empty. When the pulse
> daemon is not available (either during MPD startup or when it dies
> while MPD runs), the plugin will not even attempt to reconnect to
> pulse. Please move the code to the open() method, to make that work.
I changed the daemonize call as the fork losts the connection to the
pulse server. According to your remark, the init() method should be
moved to the open() ones.
With the modification, mpd is able to reconnect the pulse mixer after
restarting the pulseaudio daemon.
Signed-off-by: David Guibert <david.guibert@gmail.com>
Signed-off-by: Max Kellermann <max@duempel.org>
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