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* 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
* fix stream URLMax Kellermann2008-06-011-1/+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
* oggflac_plugin: fix build with libOggFLAC lib (libFLAC <= 7)Eric Wong2008-06-011-1/+1
| | | git-svn-id: https://svn.musicpd.org/mpd/trunk@7370 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* make DecoderControl.state an enumMax Kellerman2008-06-011-4/+6
| | | git-svn-id: https://svn.musicpd.org/mpd/trunk@7369 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* notify: don't use camelCase in notify.[ch]Max Kellerman2008-06-015-26/+26
| | | git-svn-id: https://svn.musicpd.org/mpd/trunk@7367 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* assert dc.state == DECODE_STATE_STOPMax Kellerman2008-06-011-1/+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
* fix race condition in main_notify.cMax Kellermann2008-04-171-1/+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
* added ob_set_lazy()Max Kellermann2008-04-153-2/+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
* use dc.current_song instead of pc.current_songMax Kellermann2008-04-151-1/+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
* const pointers in decode.cMax Kellermann2008-04-151-1/+1
| | | git-svn-id: https://svn.musicpd.org/mpd/trunk@7362 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* const pointers in normalize.cMax Kellermann2008-04-152-2/+2
| | | git-svn-id: https://svn.musicpd.org/mpd/trunk@7361 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* more const pointers in pcm_utils.[ch]Max Kellermann2008-04-152-6/+8
| | | git-svn-id: https://svn.musicpd.org/mpd/trunk@7360 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* fix XFADE_DISABLED=-1Max Kellermann2008-04-151-1/+1
| | | git-svn-id: https://svn.musicpd.org/mpd/trunk@7359 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* decode.c: make the crossfade state variable self-documentingEric Wong2008-04-141-15/+18
| | | git-svn-id: https://svn.musicpd.org/mpd/trunk@7358 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* command.c: remove dead commented codeEric Wong2008-04-141-1/+0
| | | | | We have revision control for a reason :) git-svn-id: https://svn.musicpd.org/mpd/trunk@7357 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* Always compile ioops.h, since main_notify uses it nowEric Wong2008-04-132-11/+0
| | | git-svn-id: https://svn.musicpd.org/mpd/trunk@7356 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* Make the OutputBuffer API more consistentEric Wong2008-04-1317-146/+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
* Stop passing our single OutputBuffer object everywhereEric Wong2008-04-1318-215/+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
* Stop passing our single DecoderControl object everywhereEric Wong2008-04-1320-374/+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
* Get rid of PlayerControl inside the PlayerData structEric Wong2008-04-137-246/+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
* main_notify: just use cond_signal to wakeup, no need to trylockEric Wong2008-04-131-11/+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
* main_notify: use pthread_cond_signal instead of broadcastEric Wong2008-04-121-1/+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
* Fix a deadlock after pause/nextEric Wong2008-04-121-0/+1
| | | | | Oops, forgot to unlock a mutex git-svn-id: https://svn.musicpd.org/mpd/trunk@7348 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* Fix the problem of songs not advancing without client activityEric Wong2008-04-128-20/+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
* command.h: include sllist.h which defines struct strnodeEric Wong2008-04-121-2/+1
| | | git-svn-id: https://svn.musicpd.org/mpd/trunk@7346 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* const pointers in audioOutput.cMax Kellermann2008-04-122-2/+4
| | | git-svn-id: https://svn.musicpd.org/mpd/trunk@7345 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* const pointers in audio.cMax Kellermann2008-04-122-10/+11
| | | git-svn-id: https://svn.musicpd.org/mpd/trunk@7344 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* flush after loop in sendDataToOutputBuffer()Max Kellermann2008-04-121-5/+4
| | | | | | Since tailChunk() automatically flushes full buffers, we do not have to check this in every iteration of sendDataToOutputBuffer(). git-svn-id: https://svn.musicpd.org/mpd/trunk@7343 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* constant pointers in replayGain.cMax Kellermann2008-04-122-2/+2
| | | git-svn-id: https://svn.musicpd.org/mpd/trunk@7342 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* yet another migration to size_tMax Kellermann2008-04-121-4/+4
| | | | | We can also get rid of one the two variables. git-svn-id: https://svn.musicpd.org/mpd/trunk@7341 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* check cb->stop in the while loopMax Kellermann2008-04-121-4/+4
| | | | | | Checking dc->stop in the while condition and again after the while loop costs some CPU cycles we should save. git-svn-id: https://svn.musicpd.org/mpd/trunk@7340 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* eliminate OutputBuffer.currentChunkMax Kellermann2008-04-122-31/+51
| | | | | | | | | | | OutputBuffer.currentChunk contains redundant data: it is either -1 when there is no chunk which is currently being written, or it equals "end". If we always keep chunk[end] in a valid state, we can remove OutputBuffer.currentChunk. This patch may look a bit clumsy, especially flushOutputBuffer(), but that will be fixed later with an major OutputBuffer API overhaul. git-svn-id: https://svn.musicpd.org/mpd/trunk@7339 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* added output_buffer_expand()Max Kellermann2008-04-121-13/+22
| | | | | | | output_buffer_expand() moves the cb->end to the new position (only its current successor is allowed) and wakes up the player if is waiting for the decoder. This simplifies flushOutputBuffer(). git-svn-id: https://svn.musicpd.org/mpd/trunk@7338 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* initialize all elements in initOutputBuffer()Max Kellermann2008-04-121-0/+2
| | | | | | | The current OutputBuffer object is allocated statically, i.e. it is zeroed. To be safe for other cases in the future, also initialize the other elements. git-svn-id: https://svn.musicpd.org/mpd/trunk@7337 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* wake up player on demandMax Kellermann2008-04-121-1/+9
| | | | | | | | The decoder should not wake up the player when it did not produce a flushed chunk. Move the decoder_wakeup_player() call to flushOutputBuffer() and invoke it only if the buffer was previously empty. git-svn-id: https://svn.musicpd.org/mpd/trunk@7336 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* unlink the socket before bind()Max Kellermann2008-04-121-0/+2
| | | | | | If a unix domain socket already exists, bind() fails. Unlink the socket file. git-svn-id: https://svn.musicpd.org/mpd/trunk@7335 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* replaced assertion with checkMax Kellermann2008-04-121-2/+1
| | | | | | | During my tests, it happened that data->position>newPosition. I have not yet fully understood why this can happen; for now, replace this with a run-time check. git-svn-id: https://svn.musicpd.org/mpd/trunk@7334 09075e82-0dd4-0310-85a5-a0d7c8717e4f
* fix several errors/warnings which only appear with -O3Max Kellermann2008-04-122-1/+3
| | | git-svn-id: https://svn.musicpd.org/mpd/trunk@7333 09075e82-0dd4-0310-85a5-a0d7c8717e4f
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