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* audiofile: use break instead of local variable "eof"Max Kellermann2008-08-301-3/+3
| | | | | | | Similar to previous patch: eliminate one variable by using "break". This also simplifies the code since we can remove one level of indent. [ew: rewritten to match current API]
* aac/mp4: removed local variable "eof" because it is unusedMax Kellermann2008-08-302-17/+10
| | | | | "break" is so much easier than "eof=1; continue;", when "!eof" is the loop condition.
* clean up CPP includesMax Kellermann2008-08-3017-63/+2
| | | | | | | Include only headers which are really required. This speeds up compilation and helps detect cross-layer accesses. [ew: minor fixups to not break on new core]
* enable -Wpointer-arith, -Wstrict-prototypesMax Kellermann2008-08-3019-116/+182
| | | | | | Also enable -Wunused-parameter - this forces us to add the gcc "unused" attribute to a lot of parameters (mostly library callback functions), but it's worth it during code refactorizations.
* fix warnings in the HTTP clientMax Kellermann2008-08-301-3/+4
| | | | | Fix a "unused argument" warning, and several warnings regarding void pointer calculation.
* ringbuf: create a new struct rbvec instead of reusing struct iovecEric Wong2008-08-306-44/+50
| | | | | | | Using struct iovec means having to cast iov_base everywhere we want to do pointer arithmetic. Instead, just use rbvec which can be safely casted to iovec whenever we use the readv/writev functions.
* fixed ringbuf.c warningsMax Kellermann2008-08-302-5/+5
| | | | | Fix a "signed/unsigned comparison warning", and several void pointer math warnings.
* metadata_pipe: free current_tag in metadata_pipe_clearEric Wong2008-08-271-0/+5
| | | | | This avoids writing the metadata of a static song into the URL of song; leading to confusing looking playlists.
* metadata_pipe: inline clear_pipe_unlocked() functionEric Wong2008-08-271-12/+9
| | | | | | I considered calling it from metadata_pipe_recv() in the past, but it's not necessary, so just inline it again to simplify things.
* playlist: fix deleting the last song in a playlistEric Wong2008-08-271-1/+2
| | | | | | | | | unK reported a bug in which explicitly calling "delete" on each song would cause mpd to lock up. This is actually triggered when the only song on the mpd playlist is deleted. Additionally, add an extra assertion to ensure we play a valid, non-NULL song in play_order_num().
* decode: clear dc.seek_where if we're not seekingEric Wong2008-08-271-2/+1
| | | | | | This way if we previously had a seek error, starting to play a new song will immediately update the status metadata.
* tagTracker: locks around {get,remove}TagItemStringEric Wong2008-08-271-2/+13
| | | | | | | | | Hopefully this fixes a segfault I experienced inside freeMpdTag earlier with the metadata_pipe. I could not reproduce the segfault again, however. Regardless, if multiple threads rely on this, we need to atomically increment/decrement these counters.
* metadata_pipe: remove highly unlikely memory leakEric Wong2008-08-271-0/+1
| | | | | | | When we send metadata, there's a remote chance that our pipe is full and our tag will be silently discarded. If that happens, the readers will never have a chance to free the tag, so ensure we free it before returning to the caller.
* Fix software mixerEric Wong2008-08-272-1/+2
| | | | I just forgot to reenable/reinitialize it after the core rewrite.
* Reimplement dynamic metadata handlingEric Wong2008-08-2612-35/+287
| | | | | | | | | | | | 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.
* playlist: fix "currentsong" after song deletionEric Wong2008-08-251-0/+2
| | | | | | | | | | When deleting previous songs, we forgot to update the playlist.queue value, causing syncPlaylistWithQueue to trigger a false sync and screw with the playlist.current pointer; causing the currentsong command to return an incorrect song. Thanks to unK to reporting this bug!
* playlist: fix "currentsong" after song movementEric Wong2008-08-251-1/+4
| | | | | | | | When moving songs around, we forgot to update the playlist.queue value, causing syncPlaylistWithQueue to trigger a false sync and screw with the playlist.current pointer; causing the currentsong command to return an incorrect song.
* xfade: gracefully fail on very short xfade timesEric Wong2008-08-231-1/+2
| | | | | | It's possible to calculate an impossibly small value that we don't have a chance to xfade. Don't die if we can't find the boundary to start crossfading on
* xfade: copy xfade_time locally to avoid race conditionsEric Wong2008-08-231-2/+5
| | | | | | | ob.xfade_time can be changed by the main process without locking, so copy the float value into a local variable and recheck the local variable for zero before continuing.
* outputBuffer: never calculate xfade time if xfade is offEric Wong2008-08-231-3/+5
| | | | | We don't assert on xfade_time > 0 inside any of the xfade calculations since we have no lock around xfade_time.
* don't crossfade different audio formatsEric Wong2008-08-231-2/+4
| | | | It sounds nasty and we didn't do it before the core-rewrite
* outputBuffer: close audio device on stopEric Wong2008-08-232-15/+9
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* outputBuffer_audio: eliminate the hacky audio_opened variableEric Wong2008-08-231-10/+3
| | | | It's redundant, we already track that stuff elsewhere.
* playlist: queue songs after adding themEric Wong2008-08-231-0/+6
| | | | | | | This fixes the case where we wouldn't start playing a newly added song if we're near the end of the playlist and done decoding the last song (but still playing from the buffer).
* outputBuffer: fix buffer_before_play handlingEric Wong2008-08-233-38/+55
| | | | | | | | | | | | | | | | | | buffer_before_play is a prebuffer; always respecting it is almost as good as having no buffer at all. So we only respect it when we haven't played anything. Bugs that were a side effect of this also got fixed: The player would not stop when we got to the end of the last song on non-repeating playlists. The playlist would continuously show the song in the last few seconds of playback, and never move. Having crossfade enabled would also amplify the above effect. So, as a side effect, crossfade now correctly handles end-of-playlist conditions, as well. It will fade out to silence when we're at the end of a playlist.
* change queueNextSongInPlaylist assertion to checkEric Wong2008-08-231-1/+2
| | | | | | | There are still some places where we try to call this function without the playlist being stopped. It's really harmless, to call it and just break out immediately, so change the assertion.
* mp3_plugin: fix assertion during seekingEric Wong2008-08-201-3/+3
| | | | | | data->muteFrame won't necessarily get cleared when it enters that block of code, so we don't signal the action as complete until it is actually cleared.
* outputBuffer: drop buffered audio on new songsEric Wong2008-08-201-0/+1
| | | | Hopefully this fixes the skipping problem Qball reports
* Remove ob_wait_sync and cleanup triggering in playlistEric Wong2008-08-193-72/+46
| | | | | | | | ob_wait_sync was a gross hack anyways. We are one step closer to being able to trigger actions in our worker threads asynchronously. Just need to make input (file opening) in decoder happen _after_ our decoder returns an ACK.
* fix output buffer deadlock when daemonizingEric Wong2008-08-1912-90/+48
| | | | | | | | | | | 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 :<
* log.c: thread-safety for warning logEric Wong2008-08-191-4/+12
| | | | | | I'm really no fan of the warning log, it's too complex for how little it gets used; but fixing it is another problem.
* core rewrite (decode,player,outputBuffer,playlist)Eric Wong2008-08-1647-2199/+1951
| | | | | | | | | | | | | 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.
* http: hopefully allow seeking to work on static filesEric Wong2008-06-301-1/+2
| | | git-svn-id: https://svn.musicpd.org/mpd/trunk@7398 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* don't call seekInputStream(0) if r==0Max Kellermann2008-06-301-1/+2
| | | | | | If nothing has been read from the input stream, we don't have to rewind it. git-svn-id: https://svn.musicpd.org/mpd/trunk@7397 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* eliminated local variable "to_read"Max Kellermann2008-06-301-4/+3
| | | | | | | The variable "to_read" is never modified except in the last iteration of the while loop. This means the while condition will never become false, as the body will break before that may be checked. git-svn-id: https://svn.musicpd.org/mpd/trunk@7396 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* introduce struct condition as a more correct version of NotifyEric Wong2008-06-304-64/+191
| | | | | Start using it in the HTTP code git-svn-id: https://svn.musicpd.org/mpd/trunk@7395 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* utils: pthread_{mutex,cond}_init can fail, so check for itEric Wong2008-06-302-0/+18
| | | git-svn-id: https://svn.musicpd.org/mpd/trunk@7394 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* http: initial rewrite using ringbuffer + pthreadsEric Wong2008-06-302-562/+799
| | | | | | | | | | | | | | | | | This institutes the usage of a separate thread to buffer HTTP input. It is basically practice code for using the ringbuffer code which I plan on reusing for the OutputBuffer as well as further input buffering for disk (networked filesystems over WAN, laptops on battery, etc). Each readFromInputStream() call on an HTTP stream can take several seconds to complete, short reads are avoided. A single-threaded solution for systems supporting large enough SO_RCVBUF values should also be possible and will likely be done in the future; but this lock-free(except when full/empty) ringbuffer is cool :) git-svn-id: https://svn.musicpd.org/mpd/trunk@7393 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* http: fix some small memory leaks when hitting redirectsEric Wong2008-06-301-0/+6
| | | git-svn-id: https://svn.musicpd.org/mpd/trunk@7392 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* utils: add new unforgiving utility functionsEric Wong2008-06-302-0/+30
| | | | | | We'll be using pipes when waiting for I/O, and condition variables at other times. git-svn-id: https://svn.musicpd.org/mpd/trunk@7391 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* ringbuf: add thread-safe, thread-specific reset functionsEric Wong2008-06-302-0/+30
| | | | | | This will allow both the reader and writer threads to reset the ringbuffer in a thread-safe fashion. git-svn-id: https://svn.musicpd.org/mpd/trunk@7390 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* ringbuf: get_{write,read}_vector returns total bytes in both vec eltsEric Wong2008-06-302-5/+9
| | | | | This will eliminate unnecessary calls to ringbuf_{read,write}_space git-svn-id: https://svn.musicpd.org/mpd/trunk@7389 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* http: split out logic around getaddrinfo() and connect()Eric Wong2008-06-301-40/+42
| | | | | Makes code easier to read and modularize git-svn-id: https://svn.musicpd.org/mpd/trunk@7388 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* http: split out auth code since it's mostly uninteresting for nowEric Wong2008-06-303-75/+103
| | | | | | 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
* Add a generic ring buffer implementationEric Wong2008-06-303-0/+503
| | | | | | | | | | | | | | | | 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
* os_compat.h: add sys/uio.h for writev/readvEric Wong2008-06-301-0/+1
| | | | | vectored I/O will be useful with our ring buffer lib git-svn-id: https://svn.musicpd.org/mpd/trunk@7385 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* jack: initialize audioOutput->dataMax Kellermann2008-06-131-1/+3
| | | | | | | | | | | | | Initialize audioOutput->data with NULL in jack_initDriver(). Previously, this was never initialized, although the other functions relied on it being NULL prior to jack_openDevice(). This patch addresses bug 0001641[1]. In contrast to the patch provided by the bug reporter, it moves the initialization before the "!param" check. [1] - http://musicpd.org/mantis/view.php?id=1641 git-svn-id: https://svn.musicpd.org/mpd/trunk@7375 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* mod: fix crashing on modtracker filesHans de Goede2008-06-131-1/+1
| | | | | | | | | This patch was taken from http://bugzilla.livna.org/show_bug.cgi?id=1987 and addresses bug 0001693[1] [1] - http://musicpd.org/mantis/view.php?id=1693 git-svn-id: https://svn.musicpd.org/mpd/trunk@7374 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* audio.c: avoid magic numbers even if they have comments :)Eric Wong2008-06-021-1/+1
| | | git-svn-id: https://svn.musicpd.org/mpd/trunk@7373 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* remove audioDeviceStates from playerData and getPlayerDataEric Wong2008-06-025-40/+14
| | | git-svn-id: https://svn.musicpd.org/mpd/trunk@7372 09075e82-0dd4-0310-85a5-a0d7c8717e4f
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