GIOChannel is more portable than raw read()/write() calls. We're
using GIOChannel anyway, because we need it for plugging the client
into the GLib main loop.
Configure the GIOChannel to the bare minimum: no character set, no
buffering.
On some platforms, g_free() must be used for memory allocated by
GLib. This patch intends to correct a lot of occurrences, but is
probably not complete.
Both methods are always called together. There is no point in having
them separate. This simplifies the code, because the old configure()
method could be called more than once, and had to free old
allocations.
Reimplemented the legacy mixer configuration: copy the deprecated
configuration values into the audio_output section. Don't configure
the mixers twice (once for the audio_output, and a second time for the
legacy values).
This requires volume_init() to be called before initAudioDriver().
Return the default value in the conf_get_block_*() functions when
param==NULL was passed.
This simplifies a lot of code, because all initialization can be done
in one code path, regardless whether configuration is present.
Two bugs here led to a large number of interrupts being generated on the
sound card when ALSA output is being used. Because we specify no default
period_time, the sound card gives us 3000 interrupts/sec rather than a more
sane 20 or 30. This completes the revert of dd7711 already started by
4ca24f.
The larger bug was in the change to config_get_block_unsigned() and using 0
as the default value for both 'buffer_time' and 'period_time'. This means
any pre-setting of these options in newAlsaData() gets wiped out. Add a new
default for period_time, and ensure default values for buffer_time and
period_time are used if none are provided by the user.
Signed-off-by: Dan McGee <dan@archlinux.org>
[mk: set defaults in newAlsaData() to fix auto-configuration; renamed
"_MS" back to "_US" because ALSA expects microseconds, not milliseconds]
Signed-off-by: Max Kellermann <max@duempel.org>
Added all important id tags from the MusicBrainz wiki:
http://musicbrainz.org/doc/MusicBrainzTag
This should automatically enable its suport in the vorbis and flac
decoder plugins.
The input_stream API sets size to -1 when the size of the resource is
not known. The modplug decoder checked for size==0, which would be an
empty file.
You are allowed to call decoder_read() with decoder==NULL. It is a
convenience function provided by the decoder API. Don't manually fall
back to input_stream_read().
When the playlist was loaded from the state file, the order numbers
were the same as the positions. In random mode, we need to shuffle
the queue order. To accomplish that, call setPlaylistRandomStatus()
at the end of readPlaylistState(), and do a fresh shuffle.
When MPD is not playing while in random mode, and the client issues
the "clear" command, MPD crashes in stopPlaylist(), or more exactly,
in queue_order_to_position(-1). Exit from stopPlaylist() if MPD isn't
playing.
PlaylistInfo() (notice the capital 'P') sends a stored playlist to the
client. Move it to a separate library, where all the code which glues
the playlist and the MPD protocol together will live.
The playlist.c source is currently quite hard to understand. I have
managed to wrap my head around it, and this patch attempts to explain
it to the next guy.
The function playPlaylistIfPlayerStopped() is only called when the
player thread is stopped. Converted that runtime check into an
assertion, and remove one indent level.
One of the previous patches removed the "random" mode check from
nextSongInPlaylist(), which caused a shuffle whenever MPD wrapped to
the first song in "repeat" mode. Re-add that "random" check.
In playPlaylist(), the second "song==-1 && playing" check can never be
reached, because at this point, the function has already returned
(after unpausing).
When a song is deleted, start playing the next song immediately,
within deleteFromPlaylist(). This allows us to remove the ugly
playlist_noGoToNext flag, and the currentSongInPlaylist() function.
By calling queue_next_order() before playlist.current is invalidated
(by the deletion of a song), we get more robust results, and the code
becomes a little bit easier. incrPlaylistCurrent() is unused now, and
can be removed.
The function shuffles the virtual order of songs, but does not move
them physically. This is used in random mode.
The new function replaces playlist.c's randomizeOrder() function,
which was aware of playlist.current and playlist.queued. The latter
is always -1 anyway, and the former as preserved by the caller, by
converting playlist.current to a position, and then back to an order
number.
Add a "changed" check to setPlaylistRepeatStatus(): when the new
repeat mode is the same as the old one, don't do anything at all. No
more checks, no "idle" event.
When the random mode is toggled, MPD did not clear the queue. Because
of this, MPD continued with the next (random or non-random) song
according to the previous mode. Clear the queued song to fix that.
The function moveSongInPlaylist() attempted to read the position of
the current song, even if it was -1. Check that first. The same bug
was in shufflePlaylist().
The null plugin synchronizes the playback so it will happen in real
time. This patch adds a configuration option which disables this: the
playback will then be as fast as possible. This can be useful to
profile MPD.
It is possible that playlist.current is reset before the TAG event
handler playlist_tag_event() is called. Convert the assertion into a
run-time check.
Break from the loop instead of returning the function. This calls
player_stop_decoder(), which in turn emits the PLAYLIST event. This
allows the playlist to re-start the player.
Don't attempt to restart the player if it was stopped, but there were
still songs left on the playlist. This looks like it has been a
workaround for a bug which has been fixed long time ago.
The player_thread loop requests the next song from the playlist as
soon as the decoder finishes the song which is currently being played.
This is superfluous, and can lead to synchronization errors and wrong
results. The playlist already knows when the player starts playing
the next song (player_wait_for_decoder() triggers the PLAYLIST event),
and will then trigger the scheduler to provide the next song.
The "TAG" event is emitted by the player thread when the current
song's tag has changed. Split this event from "PLAYLIST" and make it
a separate callback, which is more efficient.
The "sticker" command allows clients to query or manipulate the
sticker database. This patch implements the sub-commands "get" and
"set"; more will follow soon (enumeration), as well as extended
"lsinfo" / "playlistinfo" versions.
When a song is deleted from the database, remove its sticker, too.
What's still missing is some sort of garbage collector after a fresh
database create (--create-db).
"Stickers" are pieces of information attached to existing MPD objects
(e.g. song files, directories, albums). Clients can create arbitrary
name/value pairs. MPD itself does not assume any special meaning in
them.
If a song is not within the music directory ("file:///..."), it has no
"parent directory". The archive code nonetheless dereferences the
parent pointer, causing a segmentation fault. Check parent!=NULL.
One of the previous patches made MPD consume 100% CPU in a busy wait:
when the music_pipe was full, it did not wait (with notify_wait()) for
free chunks, because a variable has a different meaning now. Always
pass "true" as the "wait" parameter.
Some plugins used the APE or ID3 tag loader as a fallback when their
own methods of loading tags did not work. Move this code out of all
decoder plugins, into song_file_update().
This new API gives the caller a writable buffer to the music pipe
chunk. This may allow the caller to eliminate several buffer copies,
because it may manipulate the returned buffer, until it calls
music_pipe_expand().
When libvorbis knows that a song is seekable, it seeks around like
crazy in the file before starting to decode it. This is very
expensive on remote HTTP resources, and delays MPD for 10 or 20
seconds.
This patch disables seeking on remote songs, because the advantages of
quickly playing a song seem to weigh more than the theoretical ability
of seeking for most MPD users. If users feel this feature is needed,
we will make a configuration option for that.
getBoolConfigParam() returns an int. It is not possible to check for
CONF_BOOL_UNSET after it has been assigned to a bool; use a temporary
int value for that.
Calling input_curl_select() after EOF has been reached causes an
assertion failure. This can happen if the HTTP response is empty.
Check c->eof before calling input_curl_select().
Path names in the directory and song structs are always encoded in
UTF-8. Don't use strcmp(), it cannot handle UTF-8 characters
properly. Use GLib's UTF-8 aware g_utf8_collate() function for that.
I was having problems with shoutcast stream outputs before applying
the attached patch, which enlarges the shoutcast output
buffer. Ideally, this should be configurable, but this resolves the
issue for my needs.
vorbis_parse_comment() should be a function which converts one comment
to a tag item. It should do everything required to do the conversion,
including looping over all possible tag types.
mpd uses some additional files to work, such as pid_file, state_file,
db_file, etc. when running mpd as non-root user, it is often that those
files end in ~/.mpd
in that case, we end up with 2 entries in a user's home, .mpdconf and
.mpd - which clutters homedirs.
this patch allows ~/.mpd/mpd.conf as an alternative to ~/.mpdconf,
allowing for a cleaner homedir
If a tag value is an empty string, the space after the colon was
removed by g_strchomp(). Fix this by removing the space check and
using g_strchug() on the return value.
The matchesAnMpdTagItemKey() API becomes more powerful and flexible if
the return value is the value pointer instead of a boolean. It also
removes (invalid and dangerous) assumptions about the string from its
caller.
When a song file is deleted during database update, all pointers to it
must be removed from the playlist. The "for" loop in
deleteASongFromPlaylist() did not deal with multiple copies of the
deleted song properly, and left instances of the (to-be-invalidated)
pointer in. Fix this by reversing the loop.
Added TAG_ITEM_ALBUM_ARTIST.
With this patch, MPD should be able to read the (inofficial)
"ALBUMARTIST" Vorbis comment. Implementations in other decoder
plugins will follow soon.
matchesAnMpdTagItemKey() broke when two tag items had the same prefix,
because it did not check if the tag name ended after the prefix. Add
a check for the colon and the space after the tag name.
If http_proxy_{host, port, user, password} are provided in mpd.conf
they are not passed on to libcurl. As a result mpd cannot stream from
behind an http proxy.
The attached patch `http_proxy.patch` makes the relevant calls to
curl_easy_setopt(...) for all proxy configuration parameters, but is
only tested for host and port.
MPD's shuffling algorithm was not implemented well: it considers songs
which were already swapped, making it somewhat non-random.
Fix the Fisher-Yates shuffle algorithm by passing the proper bounds to
the PRNG.
