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2008-08-26don't busy wait for the decoder threadMax Kellermann1-3/+7
Busy wait loops are a bad thing, especially when the response time can be very long - busy waits eat a lot of CPU, and thus slow down the other thread. Since the other thread will notify us when it's ready, we can use notify_wait() instead.
2008-08-26merged start, stop, seek into DecoderControl.commandMax Kellermann15-108/+139
Much of the existing code queries all three variables sequentially. Since only one of them can be set at a time, this can be optimized and unified by merging all of them into one enum variable. Later, the "command" checks can be expressed in a "switch" statement.
2008-08-26don't set pc->errored_song in decodeStart()Max Kellermann1-1/+0
pc->errored_song is already set by decodeParent() in the player thread when we set dc->error; no need to set it in the decoder thread.
2008-08-26added dc.next_song, renamed pc.current_songMax Kellermann4-15/+18
Since pc->current_song denotes the song which the decoder should use next, we should move it to DecoderControl. This removes one internal PlayerControl struct access from the decoder code. Also add pc.next_song, which is manipulated by the playlist code, and gets copied to dc.next_song as soon as the decoder is started.
2008-08-26clean up CPP includesMax Kellermann19-79/+1
Include only headers which are really required. This speeds up compilation and helps detect cross-layer accesses.
2008-08-26enable -Wpointer-arith, -Wstrict-prototypesMax Kellermann20-118/+184
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.
2008-08-25fix warnings in the HTTP clientMax Kellermann1-3/+4
Fix a "unused argument" warning, and several warnings regarding void pointer calculation.
2008-08-25fixed ringbuf.c warningsMax Kellermann2-5/+5
Fix a "signed/unsigned comparison warning", and several void pointer math warnings.
2008-06-30http: hopefully allow seeking to work on static filesEric Wong1-1/+2
git-svn-id: https://svn.musicpd.org/mpd/trunk@7398 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2008-06-30don't call seekInputStream(0) if r==0Max Kellermann1-1/+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
2008-06-30eliminated local variable "to_read"Max Kellermann1-4/+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
2008-06-30introduce struct condition as a more correct version of NotifyEric Wong4-64/+191
Start using it in the HTTP code git-svn-id: https://svn.musicpd.org/mpd/trunk@7395 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2008-06-30utils: pthread_{mutex,cond}_init can fail, so check for itEric Wong2-0/+18
git-svn-id: https://svn.musicpd.org/mpd/trunk@7394 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2008-06-30http: initial rewrite using ringbuffer + pthreadsEric Wong2-562/+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
2008-06-30http: fix some small memory leaks when hitting redirectsEric Wong1-0/+6
git-svn-id: https://svn.musicpd.org/mpd/trunk@7392 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2008-06-30utils: add new unforgiving utility functionsEric Wong2-0/+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
2008-06-30ringbuf: add thread-safe, thread-specific reset functionsEric Wong2-0/+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
2008-06-30ringbuf: get_{write,read}_vector returns total bytes in both vec eltsEric Wong2-5/+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
2008-06-30http: split out logic around getaddrinfo() and connect()Eric Wong1-40/+42
Makes code easier to read and modularize git-svn-id: https://svn.musicpd.org/mpd/trunk@7388 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2008-06-30http: split out auth code since it's mostly uninteresting for nowEric Wong3-75/+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
2008-06-30Add a generic ring buffer implementationEric Wong3-0/+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
2008-06-30os_compat.h: add sys/uio.h for writev/readvEric Wong1-0/+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
2008-06-13jack: initialize audioOutput->dataMax Kellermann1-1/+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
2008-06-13mod: fix crashing on modtracker filesHans de Goede1-1/+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
2008-06-02audio.c: avoid magic numbers even if they have comments :)Eric Wong1-1/+1
git-svn-id: https://svn.musicpd.org/mpd/trunk@7373 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2008-06-02remove audioDeviceStates from playerData and getPlayerDataEric Wong5-40/+14
git-svn-id: https://svn.musicpd.org/mpd/trunk@7372 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2008-06-01fix stream URLMax Kellermann1-1/+2
Streaming was broken, beacuse the stream URL was never copied to path_max_fs. [ew: replaced strcpy with pathcpy_trunc for ease of auditing] git-svn-id: https://svn.musicpd.org/mpd/trunk@7371 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2008-06-01oggflac_plugin: fix build with libOggFLAC lib (libFLAC <= 7)Eric Wong1-1/+1
git-svn-id: https://svn.musicpd.org/mpd/trunk@7370 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2008-06-01make DecoderControl.state an enumMax Kellerman1-4/+6
git-svn-id: https://svn.musicpd.org/mpd/trunk@7369 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2008-06-01notify: don't use camelCase in notify.[ch]Max Kellerman5-26/+26
git-svn-id: https://svn.musicpd.org/mpd/trunk@7367 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2008-06-01assert dc.state == DECODE_STATE_STOPMax Kellerman1-1/+2
During the decoder thread main loop, dc.state must be DECODE_STATE_STOP. Explicitly assigning it after the "dc.stop" check is redundant. git-svn-id: https://svn.musicpd.org/mpd/trunk@7366 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2008-04-17fix race condition in main_notify.cMax Kellermann1-1/+6
The function wait_main_task() is racy: if the function wakeup_via_cond() sees the mutex is locked just before wait_main_task() executes pthread_cond_wait(), the main thread blocks forever. Work around this issue by adding a "pending" flag just like in my notify.c code. A standards-compliant solution should be implemented later. git-svn-id: https://svn.musicpd.org/mpd/trunk@7365 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2008-04-15added ob_set_lazy()Max Kellermann3-2/+26
In lazy mode (previously the default), outputBuffer.c only wakes up the player when it was previously empty. That caused a deadlock when the player was waiting for buffered_before_play, since the decoder wouldn't wake up the player when buffered_before_play was reached. In non-lazy mode, always wake up the player when a new chunk was decoded. git-svn-id: https://svn.musicpd.org/mpd/trunk@7364 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2008-04-15use dc.current_song instead of pc.current_songMax Kellermann1-1/+1
When we are in an input plugin, dc.current_song should already be set. Use it instead of pc.current_song. git-svn-id: https://svn.musicpd.org/mpd/trunk@7363 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2008-04-15const pointers in decode.cMax Kellermann1-1/+1
git-svn-id: https://svn.musicpd.org/mpd/trunk@7362 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2008-04-15const pointers in normalize.cMax Kellermann2-2/+2
git-svn-id: https://svn.musicpd.org/mpd/trunk@7361 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2008-04-15more const pointers in pcm_utils.[ch]Max Kellermann2-6/+8
git-svn-id: https://svn.musicpd.org/mpd/trunk@7360 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2008-04-15fix XFADE_DISABLED=-1Max Kellermann1-1/+1
git-svn-id: https://svn.musicpd.org/mpd/trunk@7359 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2008-04-14decode.c: make the crossfade state variable self-documentingEric Wong1-15/+18
git-svn-id: https://svn.musicpd.org/mpd/trunk@7358 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2008-04-14command.c: remove dead commented codeEric Wong1-1/+0
We have revision control for a reason :) git-svn-id: https://svn.musicpd.org/mpd/trunk@7357 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2008-04-13Always compile ioops.h, since main_notify uses it nowEric Wong2-11/+0
git-svn-id: https://svn.musicpd.org/mpd/trunk@7356 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2008-04-13Make the OutputBuffer API more consistentEric Wong17-146/+146
We had functions names varied between outputBufferFoo, fooOutputBuffer, and output_buffer_foo That was too confusing for my little brain to handle. And the global variable was somehow named 'cb' instead of the more obvious 'ob'... git-svn-id: https://svn.musicpd.org/mpd/trunk@7355 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2008-04-13Stop passing our single OutputBuffer object everywhereEric Wong18-215/+199
All of our main singleton data structures are implicitly shared, so there's no reason to keep passing them around and around in the stack and making our internal API harder to deal with. git-svn-id: https://svn.musicpd.org/mpd/trunk@7354 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2008-04-13Stop passing our single DecoderControl object everywhereEric Wong20-374/+337
This at least makes the argument list to a lot of our plugin functions shorter and removes a good amount of line nois^W^Wcode, hopefully making things easier to read and follow. git-svn-id: https://svn.musicpd.org/mpd/trunk@7353 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2008-04-13Get rid of PlayerControl inside the PlayerData structEric Wong7-246/+184
It actually increases our image size a small bit and may even hurt performance a very small bit, but makes the code less verbose and easier to manage. I don't see a reason for mpd to ever support playing multiple files at the same time (users can run multiple instances of mpd if they really want to play Zaireeka, but that's such an edge case it's not worth ever supporting in our code). git-svn-id: https://svn.musicpd.org/mpd/trunk@7352 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2008-04-13main_notify: just use cond_signal to wakeup, no need to trylockEric Wong1-11/+1
pthread_cond_signal is a no-op if nothing is waiting on it git-svn-id: https://svn.musicpd.org/mpd/trunk@7351 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2008-04-12main_notify: use pthread_cond_signal instead of broadcastEric Wong1-1/+1
signal is all we need since we only have one waiter and likely faster git-svn-id: https://svn.musicpd.org/mpd/trunk@7349 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2008-04-12Fix a deadlock after pause/nextEric Wong1-0/+1
Oops, forgot to unlock a mutex git-svn-id: https://svn.musicpd.org/mpd/trunk@7348 09075e82-0dd4-0310-85a5-a0d7c8717e4f
2008-04-12Fix the problem of songs not advancing without client activityEric Wong8-20/+173
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
2008-04-12command.h: include sllist.h which defines struct strnodeEric Wong1-2/+1
git-svn-id: https://svn.musicpd.org/mpd/trunk@7346 09075e82-0dd4-0310-85a5-a0d7c8717e4f
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