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2008-08-26don't set dc->seekable in wavpack pluginMax Kellermann1-2/+0
dc->seekable is already set by decodeStart().
2008-08-26use a local "initialized" flag instead of dc->stateMax Kellermann3-5/+11
Since we want to hide mpd internals from the decoder plugins, the plugins should not check dc->state whether they have already called decoder_initialized(). Use a local variable to track that.
2008-08-26added decoder_seek_where() and decoder_seek_error()Max Kellermann12-42/+60
Provide access to seeking for the decoder plugins; they have to know where to seek, and they need a way to tell us that seeking has failed.
2008-08-26added decoder_command_finished() to decoder_api.hMax Kellermann14-33/+34
Some decoder commands are implemented in the decoder plugins, thus they need to have an API call to signal that their current command has been finished. Let them use the new decoder_command_finished() instead of the internal dc_command_finished().
2008-08-26added decoder_get_command()Max Kellermann13-59/+74
Another big patch which hides internal mpd APIs from decoder plugins: decoder plugins regularly poll dc->command; expose it with a decoder_api.h function.
2008-08-26moved convState to struct decoderMax Kellermann4-7/+10
Since we moved all PCM conversions to decoder_data(), the attribute convState isn't being used anymore by the OutputBuffer code. Move it to struct decoder.
2008-08-26moved struct AudioFormat to audio_format.hMax Kellermann13-19/+48
We want to expose the AudioFormat structure to plugins; remove some clutter by moving its declaration to a separate header file.
2008-08-26moved InputPlugin to decoder_api.hMax Kellermann6-61/+64
InputPlugin is the API which is implemented by a decoder plugin. This belongs to the public API/ABI, so move it to decoder_api.h. It will later be renamed to something like "decoder_plugin".
2008-08-26remove one indent level from audiofile pluginMax Kellermann1-30/+25
Anonymous code blocks just to declare variables look ugly. Move the variable declarations up and disband the code block.
2008-08-26use break instead of local variable "eof"Max Kellermann1-16/+12
Similar to previous patch: eliminate one variable by using "break". This also simplifies the code since we can remove one level of indent.
2008-08-26removed local variable "eof" because it is unusedMax Kellermann2-19/+9
"break" is so much easier than "eof=1; continue;", when "!eof" is the loop condition.
2008-08-26simplify several dc->command checksMax Kellermann1-7/+3
Since we have merged dc->stop, dc->seek into one variable, we don't have to check both conditions at a time; we can replace "!stop && !seek" with "none".
2008-08-26added parameter total_time to decoder_initialized()Max Kellermann14-29/+31
Similar to the previous patch: pass total_time instead of manipulating dc->totalTime directly.
2008-08-26added audio_format parameter to decoder_initialized()Max Kellermann14-83/+88
dc->audioFormat is set once by the decoder plugins before invoking decoder_initialized(); hide dc->audioFormat and let the decoder pass an AudioFormat pointer to decoder_initialized().
2008-08-26added decoder_clear() and decoder_flush()Max Kellermann12-22/+35
We are now beginning to remove direct structure accesses from the decoder plugins. decoder_clear() and decoder_flush() mask two very common buffer functions.
2008-08-26tail_chunk() returns ob_chunk pointerMax Kellermann1-8/+6
Code simplification: since we are not using in-band signalling with the chunk index anymore, we can just return a pointer to the tail chunk instead of the index.
2008-08-26added OutputBuffer.notifyMax Kellermann3-5/+9
OutputBuffer should be a more generic low-level library, without dependencies to the other headers. This patch adds the field "notify", which is used to signal the player thread. It is passed in the constructor, and removes the need to compile with the decode.h header.
2008-08-26added decoder_data()Max Kellermann13-136/+177
Moved all of the player-waiting code to decoder_data(), to make OutputBuffer more generic.
2008-08-26use the notify library in main_notify.cMax Kellermann1-10/+7
Avoid some duplicated code in main_notify.c.
2008-08-26do not sleep after openAudioDevice()Max Kellermann1-3/+0
After the decoder has been initialized and the audio device has been opened, don't sleep. The decoder plugin won't do anything special nor will it care to wake us up for some reason.
2008-08-26added decoder_initialized()Max Kellermann14-31/+66
decoder_initialized() sets the state to DECODE_STATE_DECODE and wakes up the player thread. It is called by the decoder plugin after its internal initialization is finished. More arguments will be added later to prevent direct accesses to the DecoderControl struct.
2008-08-26added struct decoderMax Kellermann17-30/+121
The decoder struct should later be made opaque to the decoder plugin, because maintaining a stable struct ABI is quite difficult. The ABI should only consist of a small number of stable functions.
2008-08-26invoke the notify API directlyMax Kellermann5-62/+24
Don't use wrappers like player_wakeup_decoder_nb(). These have been wrappers calling notify.c functions, for compatibility with the existing code when we migrated to notify.c.
2008-08-26removed "else"Max Kellermann1-2/+3
The "if" block breaked out of the loop. That means we can move the code out of the "else" block.
2008-08-26added dc_command_finished()Max Kellermann13-34/+32
dc_command_finished() is invoked by the decoder thread when it has finished a command (sent by the player thread). It resets dc.command and wakes up the player thread. This combination was used at a lot of places, and by introducing this function, the code will be more readable.
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
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