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2008-08-26Reimplement dynamic metadata handlingEric Wong1-0/+2
This has been tested for both playback of streams and outputting to streams, and seems to work fine with minimal locking. This reuses the sequence number infrastructure in OutputBuffer for synchronizing metadata payloads; so (IMNSHO) should be much more understandable than various flags being set here and there.. It could still use some cleanup and much testing, but synchronization issues should be minimal.
2008-08-19fix output buffer deadlock when daemonizingEric Wong1-2/+1
We spawned the output buffer thread before daemonizing in initPlayerData(), which is ultra bad because daemonizes forks and threads are not preserved on exit. Since playerData has been stripped bare by this core-rewrite anyways, move this code into the outputBuffer_* group and drop playerData.[ch] completely I completely forgot to test this :<
2008-08-16core rewrite (decode,player,outputBuffer,playlist)Eric Wong1-4/+7
This is a huge refactoring of the core mpd process. The queueing/buffering mechanism is heavily reworked. The player.c code has been merged into outputBuffer (the actual ring buffering logic is handled by ringbuf.c); and decode.c actually handles decoding stuff. The end result is several hundreds of lines shorter, even though we still have a lot of DEBUG statements left in there for tracing and a lot of assertions, too.
2008-06-30introduce struct condition as a more correct version of NotifyEric Wong1-0/+2
Start using it in the HTTP code git-svn-id: https://svn.musicpd.org/mpd/trunk@7395 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2008-06-30http: split out auth code since it's mostly uninteresting for nowEric Wong1-0/+1
The auth code also has some ugly usages of string generation which I will eventually replace with something nicer... git-svn-id: https://svn.musicpd.org/mpd/trunk@7387 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2008-06-30Add a generic ring buffer implementationEric Wong1-0/+2
This piece of code is from the JACK Audio Connection Kit (trimmed down a bit for better readability). The vector functions now reuse the common iovec struct used by writev/readv instead of reinventing an identical but differently-named struct. From the comments: > ISO/POSIX C version of Paul Davis's lock free ringbuffer C++ code. > This is safe for the case of one read thread and one write thread. License is LGPL 2.1 or later git-svn-id: https://svn.musicpd.org/mpd/trunk@7386 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2008-04-12Fix the problem of songs not advancing without client activityEric Wong1-0/+2
The select() in the main event loop blocks now (saving us many unnecessary wakeups). This interacted badly with the threads that were trying to wakeup the main task via pthread_cond_signal() since the main task was not blocked on a condition variable, but on select(). So now if we detect a need to wakeup the player, we write to a pipe which select() is watching instead of blindly calling pthread_cond_signal(). git-svn-id: https://svn.musicpd.org/mpd/trunk@7347 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2008-04-12Drop metadata updates from HTTP for now (input HTTP, and shout)Eric Wong1-2/+0
It is way more complicated than it should be; and locking it for thread-safety is too difficult. [merged r7183 from branches/ew] git-svn-id: https://svn.musicpd.org/mpd/trunk@7241 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2008-03-30include os_compat.h in tarball distributionsEric Wong1-0/+1
Thanks to Jérome Perrin git-svn-id: https://svn.musicpd.org/mpd/trunk@7224 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2008-03-26notify the decoder instead of polling 100hzMax Kellermann1-0/+2
When the decoder process is faster than the player process, all decodedd buffers are full at some point in time. The decoder has to wait for buffers to become free (finished playing). It used to do this by polling the buffer status 100 times a second. This generates a lot of unnecessary CPU wakeups. This patch adds a way for the player process to notify the decoder process that it may continue its work. We could use pthread_cond for that, unfortunately inter-process mutexes/conds are not supported by some kernels (Linux), so we cannot use this light-weight method until mpd moves to using threads instead of processes. The other method would be semaphores, which historically are global resources with a unique name; this historic API is cumbersome, and I wanted to avoid it. I came up with a quite naive solution for now: I create an anonymous pipe with pipe(), and the decoder process reads on that pipe. Until the player process sends data on it as a signal, the decoder process blocks. This can be optimized in a number of ways: - if the decoder process is still working (instead of waiting for buffers), we could save the write() system call, since there is nobody waiting for the notification. [ew: I tried this using a counter in shared memory, didn't help] - the pipe buffer will be full at some point, when the decoder thread is too slow. For this reason, the writer side of the pipe is non-blocking, and mpd can ignore the resulting EWOULDBLOCK. - since we have shared memory, we could check whether somebody is actually waiting without a context switch, and we could just not write the notification byte. [ew: tried same method/result as first point above] - if there is already a notification in the pipe, we could also not write another one. [ew: tried same method/result as first/third points above] - the decoder will only consume 64 bytes at a time. If the pipe buffer is full, this will result in a lot of read() invocations. This does not hurt badly, but on a heavily loaded system, this might add a little bit more load. The preceding optimizations however are able eliminate the this. - finally, we should use another method for inter process notifications - maybe kill() or just make mpd use threads, finally. In spite of all these possibilities to optimize this code further, this pipe notification trick is faster than the 100 Hz poll. On my machine, it reduced the number of wakeups to less than 30%. git-svn-id: https://svn.musicpd.org/mpd/trunk@7215 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2008-01-26Cleanup checking for tests in src/ when building in separate dirEric Wong1-1/+2
git-svn-id: https://svn.musicpd.org/mpd/trunk@7147 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2008-01-03ioops: make this zero-impact when compiling w/o zeroconf as wellEric Wong1-0/+1
This reduces the text size of the binary slightly when zeroconf support is not built, and keeps the interface code cleaner as well. git-svn-id: https://svn.musicpd.org/mpd/trunk@7133 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2007-12-28Merge branches/ew r7104Eric Wong1-0/+12
thread-safety work in preparation for rewrite to use pthreads Expect no regressions against trunk (r7078), possibly minor performance improvements in update (due to fewer heap allocations), but increased stack usage. Applied the following patches: * maxpath_str for reentrancy (temporary fix, reverted) * path: start working on thread-safe variants of these methods * Re-entrancy work on path/character-set conversions * directory.c: exploreDirectory() use reentrant functions here * directory/update: more use of reentrant functions + cleanups * string_toupper: a strdup-less version of strDupToUpper * get_song_url: a static-variable-free version of getSongUrl() * Use reentrant/thread-safe get_song_url everywhere * replace rmp2amp with the reentrant version, rmp2amp_r * Get rid of the non-reentrant/non-thread-safe rpp2app, too. * buffer2array: assert strdup() returns a usable value in unit tests * replace utf8ToFsCharset and fsCharsetToUtf8 with thread-safe variants * fix storing playlists w/o absolute paths * parent_path(), a reentrant version of parentPath() * parentPath => parent_path for reentrancy and thread-safety * allow "make test" to automatically run embedded unit tests * remove convStrDup() and maxpath_str() * use MPD_PATH_MAX everywhere instead of MAXPATHLEN * path: get rid of appendSlash, pfx_path and just use pfx_dir * get_song_url: fix the ability to play songs in the top-level music_directory git-svn-id: https://svn.musicpd.org/mpd/trunk@7106 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2007-06-24Adding WavPack support. Patch courtesy Kodest.J. Alexander Treuman1-1/+2
git-svn-id: https://svn.musicpd.org/mpd/trunk@6651 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2007-06-13Adding FIFO audio output. This is pretty much identical to the old one,J. Alexander Treuman1-1/+2
except that it now uses a timer for throttling. git-svn-id: https://svn.musicpd.org/mpd/trunk@6621 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2007-05-30Move the timing code from the null plugin to timer.c, so it can be easilyJ. Alexander Treuman1-2/+4
used in other plugins (fifo, shout, etc.). git-svn-id: https://svn.musicpd.org/mpd/trunk@6397 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2007-05-30Adding a null output plugin.J. Alexander Treuman1-0/+1
git-svn-id: https://svn.musicpd.org/mpd/trunk@6393 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2007-05-28Adding ioops.h to mpd_headers so that it gets included in the tarball.J. Alexander Treuman1-0/+1
git-svn-id: https://svn.musicpd.org/mpd/trunk@6323 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2007-05-16Committing pat's rewrite of the stored playlist code. This also adds twoJ. Alexander Treuman1-2/+4
new commands: playlistmove and playlistdelete. git-svn-id: https://svn.musicpd.org/mpd/trunk@6116 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2007-02-24Moving a bunch of the LocateTagItem code to locate.[ch] so that it canJ. Alexander Treuman1-2/+4
later be used for playlist searching. git-svn-id: https://svn.musicpd.org/mpd/trunk@5419 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2007-02-18Reverting all of my localization changes. It was a horribleJ. Alexander Treuman1-2/+0
implementation, and fixing it is a big enough job that I don't know when I'll get around to it. Probably best just starting from scratch anyhow. git-svn-id: https://svn.musicpd.org/mpd/trunk@5373 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2007-01-11Added zeroconf service publishing using avahiJim Ramsay1-2/+4
git-svn-id: https://svn.musicpd.org/mpd/trunk@5238 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2007-01-08Moving localization stuff from path.c to localization.c so we can reuse itJ. Alexander Treuman1-2/+4
for log messages when outputting to console. git-svn-id: https://svn.musicpd.org/mpd/trunk@5225 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2006-10-18jack patch from anarch (and some type fixes for mp4 and acc plugins)Warren Dukes1-1/+2
git-svn-id: https://svn.musicpd.org/mpd/trunk@4912 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2006-08-06merge changes from mpd-tree:Warren Dukes1-0/+2
-use tree for tagTracker -eliminate the master process git-svn-id: https://svn.musicpd.org/mpd/trunk@4571 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2006-07-30Standardize state_file handling routines.Eric Wong1-0/+2
This way it's easier to manage and extend. git-svn-id: https://svn.musicpd.org/mpd/trunk@4494 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2006-07-30interface/connection malloc reductions from mpd-keEric Wong1-0/+3
This patch massively reduces the amount of heap allocations at the interface/command layer. Most commands with minimal output should not allocate memory from the heap at all. Things like repeatedly polling status, currentsong, and volume changes should be faster as a result, and more importantly, not a source of memory fragmentation. These changes should be safe in that there's no way for a remote-client to corrupt memory or otherwise do bad stuff to MPD, but an extra set of eyes to review would be good. Of course there's never any warranty :) No longer do we use FILE * structures in the interface, which means we don't have to allocate any new memory for most connections. Now, before you go on about losing the buffering that FILE * +implies+, remember that myfprintf() never took advantage of any of the stdio buffering features. To reduce the diff and make bugs easier to spot in the diff, I've kept myfprintf in places where we write to files (and not network interfaces). Expect myfprintf to go away entirely soon (we'll use fprintf for writing regular files). git-svn-id: https://svn.musicpd.org/mpd/trunk@4483 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2006-07-27Use AudioCompress for volume normalizationJ. Alexander Treuman1-0/+2
git-svn-id: https://svn.musicpd.org/mpd/trunk@4474 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2006-07-26Remove the fifo plugin. It's currently useless for the average user, and ↵J. Alexander Treuman1-1/+0
making it more presentable isn't something I'm willing to do before 0.12. It will likely be added back after 0.12, along with some very experimental stuff to make it more usable. git-svn-id: https://svn.musicpd.org/mpd/trunk@4472 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2006-07-26Put mp4ff back into the treeAvuton Olrich1-1/+4
git-svn-id: https://svn.musicpd.org/mpd/trunk@4461 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2006-07-22Cleanup some now unnecessary variables from the id3/mad removalEric Wong1-1/+1
git-svn-id: https://svn.musicpd.org/mpd/trunk@4431 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2006-07-22Adding on the fly volume normalization support. Code originally from ↵J. Alexander Treuman1-0/+2
mplayer, ported by syscrash, cleaned up by avuton, and further cleaned up by me (jat). git-svn-id: https://svn.musicpd.org/mpd/trunk@4424 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2006-07-22Adding fifo output pluginJ. Alexander Treuman1-0/+1
git-svn-id: https://svn.musicpd.org/mpd/trunk@4423 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2006-07-19Remove the internal mp4ff dependencyAvuton Olrich1-4/+1
git-svn-id: https://svn.musicpd.org/mpd/trunk@4401 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2006-07-17add sparse-check target to makefilesEric Wong1-0/+11
sparse is a semantic parser developed for the Linux kernel, but works for any project written (ANSI) C. You can get sparse via git here: git clone git://www.kernel.org/pub/scm/devel/sparse/sparse.git git-svn-id: https://svn.musicpd.org/mpd/trunk@4377 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2006-07-16Remove hosted libid3tag & libmadAvuton Olrich1-2/+2
git-svn-id: https://svn.musicpd.org/mpd/trunk@4369 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2006-07-13Add PulseAudio supportJ. Alexander Treuman1-0/+1
git-svn-id: https://svn.musicpd.org/mpd/trunk@4316 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2006-03-16merge with mpd/trunk up to r3925Eric Wong1-2/+7
git-svn-id: https://svn.musicpd.org/mpd/trunk@3926 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2005-08-11patch from Oliver Logghe for Hauppage Media MVP supportWarren Dukes1-0/+1
git-svn-id: https://svn.musicpd.org/mpd/trunk@3432 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2005-03-13add OS X configure stuff and added a skeleton audioOutput plugin for OS XWarren Dukes1-0/+1
git-svn-id: https://svn.musicpd.org/mpd/trunk@3074 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2005-03-05implemented alsa audioOutput plugin, now it needs testingWarren Dukes1-0/+1
git-svn-id: https://svn.musicpd.org/mpd/trunk@3008 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2005-02-01will compile if you manually add "HAVE_MUSEPACK" to config.h and -lmusepack toWarren Dukes1-0/+1
MPD_LIBS in Makefile git-svn-id: https://svn.musicpd.org/mpd/trunk@2919 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2004-11-10merge changes from metadata-rewrite branchWarren Dukes1-2/+4
git-svn-id: https://svn.musicpd.org/mpd/trunk@2589 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2004-11-02move audioOutput dir to audioOutputsWarren Dukes1-5/+5
git-svn-id: https://svn.musicpd.org/mpd/trunk@2471 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2004-11-02move audioOutput plugins to audioOutput directoryWarren Dukes1-3/+6
git-svn-id: https://svn.musicpd.org/mpd/trunk@2470 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2004-10-30finish integrating in np's oss stuffWarren Dukes1-0/+1
git-svn-id: https://svn.musicpd.org/mpd/trunk@2413 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2004-10-20stub audioOutput plugin for shoutWarren Dukes1-0/+1
git-svn-id: https://svn.musicpd.org/mpd/trunk@2283 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2004-10-20some work on the new audioOutput layerWarren Dukes1-0/+3
git-svn-id: https://svn.musicpd.org/mpd/trunk@2277 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2004-07-04tidy up Makefile a bitWarren Dukes1-21/+90
git-svn-id: https://svn.musicpd.org/mpd/trunk@1791 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2004-06-07add ack.h to mpd_headersWarren Dukes1-2/+2
git-svn-id: https://svn.musicpd.org/mpd/trunk@1363 09075e82-0dd4-0310-85a5-a0d7c8717e4f
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