design: Remove design directory
Keeping these documents updated with the top-level design.txt was annoying. Moving forward, I would like to keep a single document up to date without extra hassle. Signed-off-by: Anna Schumaker <schumaker.anna@gmail.com>
This commit is contained in:
parent
be13c7dd87
commit
2a1f695ea8
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@ -1,109 +0,0 @@
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#!/usr/bin/python
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import os
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created_files = dict()
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node_names = dict()
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class DesignFile:
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def read_files(self, file):
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lastkey = ""
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for line in file:
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if line == "\n":
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return
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if line[0] == " " and line[1] == " ":
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created_files[lastkey] += [line.strip()]
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created_files[lastkey].sort()
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else:
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lastkey = line.strip()
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created_files.setdefault(lastkey, [])
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def read_depends(self, file):
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for line in file:
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if line == "\n":
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return;
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else:
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self.depends += line.strip().split()
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def __init__(self, file):
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self.name = ""
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self.lines = []
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self.depends = []
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self.depend_nodes = set()
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if file == None:
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return
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self.name = file.rsplit(".", 1)[0]
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f = open("design/%s" % file)
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for line in f:
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if line == "== Files ==\n":
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self.read_files(f)
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elif line == "== Depends ==\n":
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self.read_depends(f)
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else:
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self.lines += [line]
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node_names[self.name] = self
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def pump_depends(nodes):
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options = []
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res = None
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for n in nodes:
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if len(n.depend_nodes) == 0:
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options += [ n.name ]
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options.sort()
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res = node_names[ options[0] ]
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nodes.remove(res)
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for n in nodes:
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if res in n.depend_nodes:
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n.depend_nodes.remove(res)
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return res
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def resolve_dependencies():
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tmp = set()
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res = []
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for key, node in node_names.items():
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tmp.add(node)
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for depend in node.depends:
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if depend == "*":
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node.depend_nodes = set(node_names.values())
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else:
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node.depend_nodes.add(node_names[depend])
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node.depend_nodes.discard(node_names[node.name])
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while len(tmp) > 0:
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res += [ pump_depends(tmp) ]
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return res
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def gen_files_list(parsed):
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design = DesignFile(None)
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design.lines += [ "Files:\n"]
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keys = created_files.keys()
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keys.sort()
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for key in keys:
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design.lines += [ " %s\n" % key ]
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for val in created_files[key]:
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design.lines += [ " %s\n" % val ]
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parsed.insert(1, design)
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def merge_design(target, source, env):
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files = os.listdir("design/")
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files.sort()
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for file in files:
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if file.endswith(".txt"):
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DesignFile(file)
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node_list = resolve_dependencies()
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gen_files_list(node_list)
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f = open("design.txt", 'w')
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for index, design in enumerate(node_list):
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if index != 0:
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f.write("\n\n\n")
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for line in design.lines:
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f.write(line)
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design = Command("design.txt", None, merge_design)
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Alias("design", design)
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116
design/audio.txt
116
design/audio.txt
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== Files ==
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ocarina/include/
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audio.h
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ocarina/lib/
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audio.cpp
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== Depends ==
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deck library
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Audio: (lib/audio.cpp)
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This file will introduce an "audio" namespace containing all of the
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functions interacting with gstreamer. This will create a wrapper
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namespace that will be easier to work with than using raw gstreamer
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functions.
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The audio layer is meant to be an interface used by the front end to
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control most features of the backend library. This means implementing
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next track, previous track, and so on here.
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Gstreamer options passed to audio :: init() can be found by running
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`gst-inspect-1.0 --help-gst` on the command line.
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- Internal:
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Set up a message bus to look for end-of-stream and error messages so
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the next song can be played. This function should call the play
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function after loading a track and after checking the "pause after N"
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count.
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The audio layer will also create an internal playqueue for tracking
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recently played songs.
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- State:
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The audio layer will store the current trackid to disk, and then save
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the playqueue deck.
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File << current_track << endl
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deck.write(File);
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- API:
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void audio :: init(argc, argv);
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Initialize the gstreamer layer and reload the track that was
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last loaded before shutdown. Gstreamer is supposed to remove
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options from the argv array as they are processed, so pass
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pointers to argc and argv to this function.
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Read in the state file.
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void audio :: quit();
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Clean up memory allocated by gstreamer.
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Write out the state file.
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void audio :: play();
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void audio :: pause();
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Change the gstreamer state to either GST_STATE_PLAYING or
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GST_STATE_PAUSED. Do nothing if there is not a track loaded
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in the pipeline. Throw -EAUDIO if there is an error changing
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state.
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void audio :: seek_to(long);
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Seek to a position X nanoseconds into the track. Throw -EAUDIO
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if there is an error seeking to the requested position. Do
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nothing if there is not a track loaded in the pipeline.
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Seconds can be converted to nanoseconds by multiplying with
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GST_SECOND.
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void audio :: stop();
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pause()
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seek_to(0)
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void audio :: next();
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Call the deck :: next() function to get the next trackid,
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and load that file into the gstreamer pipeline. Do not change
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the state of the pipeline (if nothing is playing yet, don't
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call play()). Throw -EEXIST if there is no track to load
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into the pipeline.
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When a track is loaded:
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Is it already in the recently played playqueue?
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If yes, remove it from the playqueue.
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Add to the front of the recently played playqueue.
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Reset the current pointer in the playqueue to 0.
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Write out the state file.
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void audio :: previous();
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Call the playlist :: previous() function to iterate backwards
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through the recently played playqueue. Load the returned trackid
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without changing the pipeline state.
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trackid audio :: current_trackid();
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Return the trackid of the currently playing song. If no track
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is loaded throw -EEXIST;
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unsigned int audio :: position();
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Return the number of seconds that the song has played.
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unsigned int audio :: duration();
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Return the duration of the current song in seconds.
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void audio :: pause_after(bool enabled, unsigned int N);
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Pause after N tracks. The first parameter is a bool
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representing if this feature is enabled or not (true == enabled,
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false == disabled).
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The count will only be decremented when an end-of-stream message
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is received by the gstreamer pipeline, and not when calling
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next().
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bool audio :: pause_enabled();
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Return true if pausing is enabled, and false if pausing is
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disabled.
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unsigned int audio :: pause_count();
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Return the number of tracks that will be played before
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playback pauses.
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@ -1,28 +0,0 @@
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== Files ==
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ocarina/include/
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callback.h
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ocarina/lib/
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callback.cpp
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== Depends ==
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version print
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Callbacks: (lib/callback.cpp)
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Callbacks are used to notify a unit test or the gui that something in
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the backend has changed. The callbacks structure should be initialized
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with no-op default values and filled in by the user through the
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get_callbacks() function.
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- Callback functions:
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struct Callbacks {
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void (*on_library_add)(unsigned int, library :: Library *);
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void (*on_library_update)(unsigned int, library :: Library *);
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void (*on_library_track_add)();
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};
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static struct Callbacks callbacks;
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- API:
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struct Callbacks *get_callbacks();
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Return the Callbacks structure;
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@ -1,169 +0,0 @@
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== Files ==
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ocarina/include/
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database.h
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database.hpp
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ocarina/lib/
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database.cpp
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== Depends ==
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file
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Database: (lib/database.cpp)
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Ocarina 5.x created a different save file format for each type of
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data that needed to be stored (preferences, library paths, playlists).
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I intend to unify everything into a generic file format that can be
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accessed through a generic database interface. The database code will
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be in charge of printing the "valid" bit for each DatabaseEntry so that
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child classes do not need to call into the parent class. If valid ==
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true, the DatabaseEntry will be streamed out followed by a newline. If
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valid == false the database will print the next entry in the vector.
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Modules should inherit from the DatabasEntry class and implement their
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own read() and write() functions. The "valid" field will be stored
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before these functions are called, and the entry will be skipped if
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valid is set to false.
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The Database class is a templated class, so code could potentially
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get messy. Normal class declarations can still exist in the file
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include/database.h and member functions can be written in the file
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include/database.hpp, which will be included by database.h. Any
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function not relying on a template can be written in lib/database.cpp.
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- DatabaseEntry:
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class DatabaseEntry { /* let database modify valid flag */
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public:
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const std::string primary_key;
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bool valid;
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DatabaseEntry(const std::string &);
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virtual void write(File &) = 0;
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virtual void read(File &) = 0;
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virtual void print() = 0;
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};
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File << <CHILD_CLASS_DATA>
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- IndexEntry:
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class IndexEntry : public DatabaseEntry {
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public:
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set<unsigned int> values;
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void write(File &);
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void read(File &);
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void print();
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void insert(unsigned int);
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void remove(unsigned int);
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};
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File << key << endl;
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File << values.size() << values[0] << .. << values[N] << endl;
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- Database:
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template <class T>
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class Database {
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private:
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vector<T> db;
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map<std::string, unsigned int> keys;
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unsigned int _size; /* Number of valid rows */
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File file;
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public:
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Database::Database(filename, flags);
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void load();
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void save();
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void clear();
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void print();
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void print_keys();
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unsigned int insert(T);
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void remove(unsigned int);
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unsigned int size();
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unsigned int num_rows();
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unsigned int first();
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unsigned int last();
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unsigned int next(unsigned int &);
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bool has_key(const std :: string &);
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unsigned int find_index(const std::string &);
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T &find(const std::string &);
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T &operator[](unsigned int);
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};
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File << db.size() << endl
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File << INDEX_0 << db[INDEX_0].valid << db[INDEX_0] << endl;
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File << INDEX_1 << db[INDEX_1].valid << db[INDEX_1] << endl;
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...
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- API:
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Database :: Database(filename, flags);
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Initializes database to use ~/.ocarina{-debug}/filename.
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Set up flags.
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void Database :: load();
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Reads a saved database from disk.
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void Database :: save();
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Saves the database to disk.
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void Database :: clear();
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This function exists only if CONFIG_TEST is enabled.
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Clear the database contents in-memory, but do NOT write
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to disk.
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void Database :: print();
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This function exists only If CONFIG_TEST is enabled.
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Following a similar format for writing to disk, print the
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database to the console in a human-readable format.
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void Database :: print_keys();
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This function exists only if CONFIG_TEST is enabled.
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Print out the collected primary keys in the database.
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template <class T>
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unsigned int Database :: insert(T &);
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Adds a new item to the db and marks it as valid. A reverse
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mapping is also created into the keys map to map the primary
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key back to the id of the newly added item.
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void Database :: remove(unsigned int index);
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Mark db[index] as invalid (quick deletion).
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unsigned int Database :: size();
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Returns number of valid rows in the database.
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unsigned int Database :: num_rows();
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Return db.size().
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unsigned int Database :: first();
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Return the id to the first valid row. Return db.size() if
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there are no valid rows.
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unsigned int Database :: last();
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Return the id of the last valid row. Return db.size() if
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there are no valid rows.
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unsigned int Database :: next(unsigned int &id);
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Return the id of the next valid row or return db.size() if
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there are no valid rows.
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bool Database :: has_key(const std::string &key);
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Return true if an item with primary key "key" exists in the
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database, and false otherwise.
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unsigned int Database :: find_index(const std::string key);
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If the key exists in the database, return the index of the
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database item with that key. Throw -EEXIST if the key is not
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in the database.
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template <class T>
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T &Database :: find(const std::string &key);
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Search for primary key "key" in the database. The reverse
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mapping should be used to make this operation faster.
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Throw -EEXIST if the key is not found in the mapping.
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Throw -EINVAL if the key points to an invalid entry.
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template <class T>
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T &Database :: operator[](unsigned int index);
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Return a reference to db[index].
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Throw -EEXIST if index is out of range.
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Throw -EINVAL if index is invalid.
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@ -1,73 +0,0 @@
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== Files ==
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ocarina/include/
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deck.h
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ocarina/lib/
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deck.cpp
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$HOME/.ocarina{-debug}/
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playqueue.lst
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== Depends ==
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playqueue
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Deck: (lib/deck.cpp)
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The playqueue deck is used to hold the temporary playqueues created by
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the user.
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This module also controls the library playqueue, which should be updated
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using the on_library_track_add() and on_library_track_del() callback
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functions. The library playqueue will always have PQ_ENABLED and
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PQ_REPEAT set. This playlist will default to PQ_RANDOM unset.
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- Deck:
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list<Playqueue> deck;
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Playqueue library_pq;
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File << library_pq.random << deck.size() << endl;
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File << deck[0] << endl;
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File << deck[N] << endl;
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- API
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void deck :: init();
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Set up callbacks used by the library.
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void deck :: read(File &);
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void deck :: write(File &);
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Read or write the playqueue file. This will be called
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from the audio layer to store state.
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Playqueue *deck :: create();
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Adds a new playqueue to the end of the deck and returns a
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pointer to it.
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void deck :: remove(N);
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Remove playqueue N from the deck.
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Playqueue *deck :: get(N);
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Return playqueue N from the deck.
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void deck :: move(M, N);
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Move playqueue at index M to index N.
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unsigned int deck :: next();
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Iterate through the deck until you find a playqueue with the
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flag PQ_ENABLED set. Call next() on this playqueue and return
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the result.
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If the playqueue is empty after calling next(), remove it from
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the deck.
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If there are no playqueues on the deck, play a song from the
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library playqueue.
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If there are no playable IDs, throw -EEXIST.
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void deck :: reset();
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This function only exists if CONFIG_TEST is enabled. Erase
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all the playqueue information and reset the deck list.
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void deck :: print_info();
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This function only exists if CONFIG_TEST is enabled. Print
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out helpful stats about the current state of the playqueue deck.
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Playqueue *deck :: get_library_pq();
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Return the library playqueue.
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@ -1,19 +0,0 @@
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== Files ==
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ocarina/include/
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error.h
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== Depends ==
|
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install
|
||||
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Errors: (include/error.h
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This file contains an enum defining error codes used throughout the
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codebase.
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Error Codes:
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enum error_t {
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EAUDIO = 1, /* Audio error */
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EEXIST, /* Requested object does not exist */
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EINVAL, /* Invalid operation requested */
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EIO, /* I/O error */
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ENOTRACK,
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};
|
118
design/file.txt
118
design/file.txt
|
@ -1,118 +0,0 @@
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== Files ==
|
||||
ocarina/include/
|
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file.h
|
||||
ocarina/lib/
|
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file.cpp
|
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|
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== Depends ==
|
||||
version print
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||||
|
||||
On-disk files: (lib/file.cpp)
|
||||
Data will be stored in the user's home directory according to the
|
||||
XDG / freedesktop.org specification. This means storing data in
|
||||
$XDG_DATA_HOME/ocarina{-debug|-test}/ and storing configuration in
|
||||
$XDG_CONFIG_HOME/ocarina{-debug|-test}/. In addition, I will support
|
||||
importing data from Ocarina 5.10 for conversion to the new format.
|
||||
|
||||
In theory my file format will not change often, so it should be
|
||||
possible to use multiple Ocarina versions with the same data. However,
|
||||
should the format need to change I will only support forward
|
||||
compatibility. This means that downgrades will not be possible after
|
||||
a file format change. To keep the code even cleaner, I will only
|
||||
support updating from the previous file format version. This means
|
||||
that legacy support will be removed after the first file format change.
|
||||
|
||||
Items should be written to a file with either a space or new line
|
||||
separating multiple values.
|
||||
|
||||
- Notation:
|
||||
"File << aaaaa << bbbbb << endl" is translated into "aaaaa bbbbb\n"
|
||||
|
||||
- File version:
|
||||
#define FILE_VERSION 0
|
||||
|
||||
- Hint where the file is located:
|
||||
enum FileLocHint {
|
||||
FILE_TYPE_CONFIG,
|
||||
FILE_TYPE_DATA,
|
||||
FILE_TYPE_LEGACY,
|
||||
FILE_TYPE_INVALID,
|
||||
}
|
||||
|
||||
- Open mode:
|
||||
enum OpenMode {
|
||||
OPEN_READ,
|
||||
OPEN_WRITE,
|
||||
NOT_OPEN,
|
||||
}
|
||||
|
||||
- File:
|
||||
class File : std::fstream {
|
||||
private:
|
||||
unsigned int version;
|
||||
OpenMode mode;
|
||||
FileLocHint hint;
|
||||
string filepath;
|
||||
|
||||
public:
|
||||
File(string, FileLocHint);
|
||||
~File();
|
||||
const char *get_filepath();
|
||||
const unsigned int get_version();
|
||||
bool exists();
|
||||
void open(OpenMode);
|
||||
void close();
|
||||
string getline();
|
||||
}
|
||||
|
||||
- File format:
|
||||
File << FILE_VERSION << endl;
|
||||
File << <OTHER_DATA>;
|
||||
|
||||
- API:
|
||||
File :: File(string filepath, FileLocHint hint);
|
||||
Resolve filepath to one of:
|
||||
XDG_{CONFIG|DATA}_HOME/ocarina/filepath
|
||||
XDG_{CONFIG|DATA}_HOME/ocarina-debug/filepath
|
||||
XDG_{CONFIG|DATA}_HOME/ocarina-test/filepath
|
||||
$HOME/.ocarina/
|
||||
$HOME/.ocarina-debug/
|
||||
$HOME/.ocarina-test/
|
||||
|
||||
If filepath is an empty string, set the file hint to
|
||||
FILE_TYPE_INVALID and do not set the filepath field.
|
||||
|
||||
File :: ~File();
|
||||
Close the file stream if it is open.
|
||||
|
||||
const char *File :: get_filepath();
|
||||
Return the full filepath to the file.
|
||||
|
||||
const unsigned int File :: get_version();
|
||||
Return the file version number.
|
||||
|
||||
bool File :: exists();
|
||||
Return true if the file exists in the filesystem.
|
||||
Return false otherwise.
|
||||
|
||||
void File :: open(OpenMode mode);
|
||||
When opening a file for reading (mode == OPEN_READ),
|
||||
- Throw -EEXIST if the file does not exist
|
||||
- Open the file
|
||||
- Read in version from the start of the file
|
||||
|
||||
When opening a file for writing (mode == OPEN_WRITE),
|
||||
- Throw -ELEGACY if the file has FILE_TYPE_LEGACY set
|
||||
- Create missing directories as needed
|
||||
- Write version information to the start of the file
|
||||
|
||||
Throw -EINVAL if hint == FILE_TYPE_INVALID.
|
||||
Throw -EOPEN if the file is already open.
|
||||
|
||||
void File :: close();
|
||||
Close a file after IO.
|
||||
|
||||
string File :: getline();
|
||||
Read an entire line from the file and return it to the caller.
|
||||
In theory a return value optimization will occur so returning
|
||||
a string by value won't be a problem.
|
|
@ -1,57 +0,0 @@
|
|||
== Files ==
|
||||
ocarina/include/
|
||||
filter.h
|
||||
ocarina/lib/
|
||||
filter.cpp
|
||||
|
||||
== Depends ==
|
||||
database
|
||||
|
||||
Filter: (lib/filter.cpp)
|
||||
Filtering is used to generate a subset of songs displayed by the UI to
|
||||
that users can choose from. The inverted index is generated at startup
|
||||
so there is no need for a remove() function, since it will be wiped
|
||||
the next time the application starts.
|
||||
|
||||
- Index:
|
||||
Database<database :: IndexEntry> filter_index;
|
||||
map<string, string> lowercase_cache;
|
||||
unsigned int lowercase_cache_hits;
|
||||
|
||||
- Parsing:
|
||||
1) Convert the provided string into a list of words, using whitespace
|
||||
and the following characters as delimiters: \/,;()_-~+"
|
||||
|
||||
For each word:
|
||||
2) Check the lowercase_cache to see if we have seen the word before,
|
||||
a) If we have, return the stored string
|
||||
b) Convert the string to lowercase and strip out remaining
|
||||
special characters. Add the result to the lowercase_cache;
|
||||
|
||||
- API:
|
||||
void filter :: add(string, track_id);
|
||||
Parse the string into substrings following the "Parsing"
|
||||
section (above). Add each (substring, track_id) pair to the
|
||||
filter_index.
|
||||
|
||||
To generate substrings, iterate over the word starting from
|
||||
the front. For example: "goron" would contain the substrings
|
||||
{g, go, gor, goro, goron}.
|
||||
|
||||
void filter :: search(string, set<track_id> &);
|
||||
Parse the string into substrings following the "Parsing"
|
||||
section (above). We want to find track_ids that match ALL
|
||||
substrings, so take the intersection of all sets returned by
|
||||
the filter_index for a given substring.
|
||||
|
||||
std::string filter :: to_lowercase(const std::string &string);
|
||||
Split the string into words following step 1 of "Parsing"
|
||||
(above). Assemble and return a result string using the lower
|
||||
case cache to convert each term to lowercase.
|
||||
|
||||
void filter :: print_cache_stats();
|
||||
Print cache hit and size information.
|
||||
|
||||
void filter :: get_index();
|
||||
This function only exists if CONFIG_TEST is enabled.
|
||||
Return the index storing all the filter data.
|
|
@ -1,121 +0,0 @@
|
|||
== Depends ==
|
||||
*
|
||||
|
||||
Future work:
|
||||
I want to set reasonable expectations for Ocarina 6 so that I don't
|
||||
have to spend a large amount of time coding before releasing something
|
||||
to the wild. This section will be a list of features that I want, but
|
||||
should be deferred to a future release so basic support can be coded.
|
||||
|
||||
Hint: If feature B depends on A, implement A in 6.x and B in 6.x+1
|
||||
|
||||
- New default groups:
|
||||
Unplayed tracks
|
||||
|
||||
- Categories:
|
||||
Use these to make "groups of groups" for better organization.
|
||||
Different categories can include Album, Artist and Genere
|
||||
dynamic groups in addition to user created groups (see below)
|
||||
|
||||
The Artist, Album and Genre "tables" can be used to populate
|
||||
these categories.
|
||||
|
||||
- User created song groups:
|
||||
Basic add and remove features can be implemented using the
|
||||
Library and Banned Songs groups. This will give me a chance
|
||||
to test saving groups on a small scale before letting users
|
||||
create anything they want.
|
||||
|
||||
- Save a user's playlist as a group:
|
||||
|
||||
- Library defragment:
|
||||
Ocarina 6.0 will leave holes in the library when tracks are
|
||||
deleted, potentially leading to fragmentation and larger-than-
|
||||
needed file sizes. A "defragment" utility can be created to
|
||||
clean up unused slots.
|
||||
|
||||
To help with fixing groups, a mapping of (old values) ->
|
||||
(new values) should be kept.
|
||||
|
||||
- Fix track durations:
|
||||
Some tracks in my library are tagged with the wrong duration,
|
||||
so fix them as they are played.
|
||||
|
||||
- Track tag editor:
|
||||
Make a pop-up window for editing the tags of a track. Be sure
|
||||
to update the library information and the on-disk file.
|
||||
|
||||
- Album art:
|
||||
(easy) Start with album art fetching script
|
||||
(hard) Build in to Ocarina
|
||||
|
||||
- Playlist custom sorting:
|
||||
Click column headers to choos sort order
|
||||
Keep a list of fields that the user has selected and place new
|
||||
fields in the front of this list. Use a recursive stable sort
|
||||
to do the sorting.
|
||||
|
||||
- Better design file format:
|
||||
Todo list in each document instead of all at once in the footer.
|
||||
Leave the Todo list out of the official "design document" and
|
||||
keep it in each individual section instead.
|
||||
XML?
|
||||
Code formatting?
|
||||
Checkbox for when features are done? (reference commit)
|
||||
|
||||
- Copy a song group to a different directory:
|
||||
This can be useful for keeping an external device (like an
|
||||
Android phone) updated with the music you want to listen to.
|
||||
Complications: I have an mp3 mirror of all my music, and I
|
||||
want the mp3s to be synced. Perhaps track mirrors in Ocarina?
|
||||
|
||||
- Mirror directory:
|
||||
I rip music to .flac, but keep an mp3 mirror directory to sync
|
||||
to other computers and phones. An Ocarina tool to manage a
|
||||
COMPLETE library mirror might be a good idea so I no longer
|
||||
need to manage it externally. This can still be done with a
|
||||
script, a cron job, and maybe a "mirror this track" option in
|
||||
the library? Perhaps create a mirror group?
|
||||
|
||||
- Extra testing ideas:
|
||||
- Run tests through valgrind to help find memory leaks
|
||||
- Some way to enable / disable tests during development
|
||||
- Run tests based on dependencies
|
||||
- Fix tests that will only work on my computer
|
||||
- Double check that all inputs and outputs are tested
|
||||
- Simple testing library?
|
||||
- Stop tests on failure
|
||||
- Test callbacks
|
||||
|
||||
- Preferences:
|
||||
- Set default sort
|
||||
- Save window size
|
||||
- Set album art size
|
||||
|
||||
- Rip out Ocarina 5.x importing and legacy file support
|
||||
|
||||
- AirPlay / remote audio support
|
||||
|
||||
- Media keys
|
||||
|
||||
- Replaygain support
|
||||
External script to calculate values?
|
||||
Calculate value after first playback?
|
||||
Store in library :: Track structure
|
||||
|
||||
- Autosave databases
|
||||
Artist, album, genere and library path don't change often so
|
||||
saving on every add / remove won't be a huge performance hit
|
||||
and may actually be more efficient in the long run.
|
||||
|
||||
- Scons improvements:
|
||||
Why does everything compile with the same CONFIG_* parameters?
|
||||
Cleanups to tests/Sconscript
|
||||
Global dependency resolution (rather than having multiple ways
|
||||
in lib/ design/ and tests/)
|
||||
|
||||
- Playqueue and database inherit from common class
|
||||
- "About" dialog
|
||||
- Investigate "Bulk insert" callbacks for performance
|
||||
- Initialize PQs with multiple flags
|
||||
- Prefill Song structures in each library :: Track
|
|
@ -1,21 +0,0 @@
|
|||
== Files ==
|
||||
ocarina/gui/
|
||||
ocarina6.glade
|
||||
*
|
||||
|
||||
== Depends ==
|
||||
idle file audio library
|
||||
|
||||
Gui: (ocarina/*)
|
||||
The GUI will be written in C++ using gtkmm3 for (hopefully) cleaner code.
|
||||
|
||||
- Design requirements:
|
||||
- gtkmm3
|
||||
- Front-end for the library to add, remove and modify paths
|
||||
- This can be hidden since it's not a common task
|
||||
- Double-click to play songs
|
||||
- Front-end for groups to add and remove tracks
|
||||
- This is a common task and should not be hidden
|
||||
- Don't save / restore window size
|
||||
- Some window managers already do this automatically
|
||||
- Set reasonable defaults
|
|
@ -1,17 +0,0 @@
|
|||
== Files ==
|
||||
ocarina/
|
||||
design.txt
|
||||
|
||||
===============================================================================
|
||||
= =
|
||||
= Ocarina 6.0 =
|
||||
= =
|
||||
===============================================================================
|
||||
|
||||
Ocarina 6.0 is the 6th (re)writing of the Ocarina music player - a lightweight,
|
||||
GTK+ based music player. Improvements over the 5.x series will include the
|
||||
existence of both a design document and unit tests, two items that will help
|
||||
the main developer stay focused and make maintenance easier.
|
||||
|
||||
Ocarina 6.0 will use Gstreamer 1.0 for audio playback and GTK-MM 3 for user
|
||||
interface development.
|
|
@ -1,73 +0,0 @@
|
|||
== Files ==
|
||||
ocarina/include/
|
||||
idle.h
|
||||
idle.hpp
|
||||
ocarina/lib/
|
||||
idle.cpp
|
||||
|
||||
== Depends ==
|
||||
version print
|
||||
|
||||
Idle queue: (lib/idle.cpp)
|
||||
The idle queue is used to schedule tasks to run at a later time. Idle
|
||||
tasks must inherit from the IdleBase class so that multiple templated
|
||||
IdleTask pointers can be placed on the same idle queue.
|
||||
|
||||
Creating an idle queue in idle.hpp will create a new queue for every
|
||||
file that idle.h is included in. I want to have a single, shared
|
||||
idle queue used by the entire application so to get around this the
|
||||
IdleBase class is used and implemented in lib/idle.cpp.
|
||||
|
||||
- IdleBase:
|
||||
class IdleBase {
|
||||
private:
|
||||
schedule();
|
||||
|
||||
public:
|
||||
IdleBase();
|
||||
~IdleBase();
|
||||
virtual void run() = 0;
|
||||
};
|
||||
|
||||
- IdleTask:
|
||||
template <class T>
|
||||
class IdleTask : IdleBase {
|
||||
private:
|
||||
void (*func)(T &);
|
||||
T &data;
|
||||
|
||||
public:
|
||||
IdleTask(void (*)(T &), T);
|
||||
void run();
|
||||
};
|
||||
|
||||
- Queue:
|
||||
queue<IdleBase *> idle_queue;
|
||||
float queued = 0.0
|
||||
float serviced = 0.0
|
||||
|
||||
- API:
|
||||
void IdleBase :: schedule();
|
||||
Add the idle task to the idle queue. This should be called
|
||||
by the IdleTask constructor.
|
||||
queued++;
|
||||
|
||||
template <class T>
|
||||
static inline void idle :: schedule(void (*)(T &), T);
|
||||
Create a new IdleTask to run the function later.
|
||||
|
||||
bool idle :: run_task();
|
||||
If there are tasks on the queue:
|
||||
run the next task
|
||||
scheduled++
|
||||
If there are still tasks on the queue:
|
||||
return true
|
||||
else:
|
||||
queued = 0
|
||||
scheduled = 0
|
||||
return false
|
||||
|
||||
float idle :: get_progress();
|
||||
Return (serviced / queued) to the caller. If there are no
|
||||
tasks, return 1.0 to indicate that the queue is finished (and
|
||||
to avoid a divide-by-zero error).
|
|
@ -1,12 +0,0 @@
|
|||
== Files ==
|
||||
/usr/bin/
|
||||
ocarina
|
||||
/usr/lib/ocarina/
|
||||
|
||||
== Depends ==
|
||||
header
|
||||
|
||||
Install:
|
||||
Ocarina will be compiled into a single executable placed under
|
||||
/usr/bin/. Any extra files needed to run will be placed under
|
||||
/usr/lib/ocarina/.
|
|
@ -1,205 +0,0 @@
|
|||
== Files ==
|
||||
ocarina/include/
|
||||
library.h
|
||||
ocarina/lib/
|
||||
library.cpp
|
||||
$HOME/.ocarina{-debug}/
|
||||
album.db
|
||||
artist.db
|
||||
genre.db
|
||||
library.db
|
||||
track.db
|
||||
|
||||
== Depends ==
|
||||
idle database playlist filter
|
||||
|
||||
Library: (lib/library.cpp)
|
||||
The library manages databases containing track information added by the
|
||||
user. Ocarina 6 splits the library into multiple database tables for
|
||||
storing content. The library will exist in a library namespace to
|
||||
to make functions and classes more unique.
|
||||
|
||||
- Databases:
|
||||
enum DB_Type {
|
||||
DB_ALBUM,
|
||||
DB_ARTIST,
|
||||
DB_GENRE,
|
||||
DB_LIBRARY,
|
||||
DB_TRACK,
|
||||
};
|
||||
|
||||
- Album:
|
||||
class library :: Album : public DatabaseEntry {
|
||||
public:
|
||||
/* primary_key = "$name.$year.$artist_id" */
|
||||
string name;
|
||||
string name_lower;
|
||||
unsigned int year;
|
||||
unsigned int artist_id;
|
||||
};
|
||||
|
||||
File << artist_id << year << name
|
||||
|
||||
- Artist and Genre:
|
||||
class library :: AGInfo : public DatabaseEntry {
|
||||
public:
|
||||
string name; /* primary key */
|
||||
string name_lower;
|
||||
};
|
||||
|
||||
File << name
|
||||
|
||||
- Library:
|
||||
class library :: Library : public DatabaseEntry {
|
||||
public:
|
||||
string root_path; /* primary_key */
|
||||
unsigned int count;
|
||||
bool enabled;
|
||||
};
|
||||
|
||||
File << enabled << root_path
|
||||
|
||||
- Track:
|
||||
The primary key for a track is the full filepath (library.root_path +
|
||||
track.filepath)
|
||||
|
||||
class library :: Track : public DatabaseEntry {
|
||||
public:
|
||||
/* primary_key = library.root_path + "/" + filepath */
|
||||
unsigned int library_id;
|
||||
unsigned int artist_id;
|
||||
unsigned int album_id;
|
||||
unsigned int genre_id;
|
||||
|
||||
unsigned int track;
|
||||
unsigned int last_year;
|
||||
unsigned int last_month;
|
||||
unsigned int last_day;
|
||||
unsigned int play_count;
|
||||
unsigned int length;
|
||||
|
||||
string length_str;
|
||||
string title;
|
||||
string title_lower;
|
||||
string filepath;
|
||||
};
|
||||
|
||||
File << library_id << artist_id << album_id << genre_id;
|
||||
File << track << last_year << last_month << last_day << play_count;
|
||||
File << length << length_str << endl
|
||||
File << title << endl;
|
||||
File << filepath << endl;
|
||||
|
||||
- Song:
|
||||
struct Song {
|
||||
library :: Album *album;
|
||||
library :: AGInfo *artist;
|
||||
library :: AGInfo *genre;
|
||||
library :: Library *library;
|
||||
library :: Track *track;
|
||||
};
|
||||
|
||||
- Databases:
|
||||
Database<library :: Album> album_db(album.db);
|
||||
Database<library :: AGInfo> artist_db(artist.db);
|
||||
Database<library :: AGInfo> genre_db(genre.db);
|
||||
Database<library :: Library> library_db(library.db);
|
||||
Database<library :: Track> track_db(track.db);
|
||||
|
||||
- Updating algorithm:
|
||||
1) Use a single IdleTask to loop over each track in the library, check
|
||||
if the track still exists in the filesystem and remove it from
|
||||
library_db if not.
|
||||
2) For each directory in the scan directory, create an IdleTask to
|
||||
scan the next level of directories.
|
||||
3) For each file in the scan directory, check if the file already
|
||||
exists in the track_db and add it to the database if not. Save
|
||||
each database after adding files.
|
||||
|
||||
The taglib library should be used for finding artist, album, etc. tags
|
||||
for each track.
|
||||
|
||||
- Importing
|
||||
Ocarina 5.11 stores library files in ~/.ocarina/library/. Importing
|
||||
involves reading each file and adding them to the database. If the file
|
||||
describes a path already in the database then DO NOT overwrite the
|
||||
current path and instead move on to the next file. If version != 2 then
|
||||
move on to the next file.
|
||||
|
||||
File format:
|
||||
File << version << endl; /* version == 2 */
|
||||
File << path << endl;
|
||||
File << id << enabled << next_track_id << size << endl;
|
||||
File << <track list>
|
||||
|
||||
Track format:
|
||||
File << filepath << endl;
|
||||
File << title << endl;
|
||||
File << artist << endl;
|
||||
File << album << endl;
|
||||
File << comment << endl;
|
||||
File << genre << endl;
|
||||
File << lenstr << endl;
|
||||
File << id << year << track << count;
|
||||
File << last_day << last_month << last_year;
|
||||
File << length << bitrate << sample << channels << banned << endl;
|
||||
|
||||
- Testing:
|
||||
The script tests/library/gen_library.sh will create a sample library
|
||||
in the /tmp/ directory for testing purposes. All the track files are
|
||||
complete silence, but the script will fake up tags for each file.
|
||||
|
||||
To test importing, create several mock library files and copy them to
|
||||
~/.ocarina-test/library/ and attempt to read them in.
|
||||
|
||||
- API
|
||||
void library :: init();
|
||||
Initialize databases and read files from disk. While reading
|
||||
the library:
|
||||
- Update the count of tracks in each library path
|
||||
- Find the lowercase text of artist, album, genre, track
|
||||
|
||||
void library :: add_path(string dir);
|
||||
If dir is not a directory:
|
||||
throw -EINVAL
|
||||
|
||||
Trigger the on_library_add() callback on success.
|
||||
|
||||
void library :: del_path(unsigned int lib_id);
|
||||
Invalidate a library_db row and all tracks owned by that path
|
||||
if lib_id is not valid, throw -EEXIST.
|
||||
|
||||
void library :: update_path(lib_id);
|
||||
Update the given library_db row.
|
||||
If lib_id is not valid, throw -EEXIST.
|
||||
|
||||
Trigger the on_library_update() callback.
|
||||
|
||||
void library :: update_all();
|
||||
Update all library paths.
|
||||
Trigger the on_library_update() callback for each path.
|
||||
|
||||
void library :: set_enabled(unsigned int id, bool enabled);
|
||||
Either enable or disable a library path. Trigger
|
||||
on_library_track_del() for each track disabled this way.
|
||||
|
||||
struct Song library :: lookup(track_id);
|
||||
Fill out a Song structure for the provided track_id.
|
||||
Throw -EEXIST if there is no track mapping to track_id.
|
||||
|
||||
struct library :: Library *library :: lookup_path(unsigned int id);
|
||||
Return the library path with index id.
|
||||
Throw -EEXIST if there is no such path.
|
||||
|
||||
void library :: import();
|
||||
Call this function to import an Ocarina 5.11 style library,
|
||||
following the "Importing" section above.
|
||||
|
||||
#ifdef CONFIG_TEST
|
||||
void library :: print_db(DB_Type);
|
||||
Print the database corresponding to DB_Type
|
||||
|
||||
void library :: reset();
|
||||
Clear all databases, returning the library to an empty state.
|
||||
endif /* CONFIG_TEST */
|
||||
|
|
@ -1,53 +0,0 @@
|
|||
== Files ==
|
||||
ocarina/include/
|
||||
playlist.h
|
||||
ocarina/lib/
|
||||
playlist.cpp
|
||||
$HOME/.ocarina{-debug}/
|
||||
playlist.db
|
||||
|
||||
== Depends ==
|
||||
database
|
||||
|
||||
Playlists: (lib/playlist.cpp)
|
||||
Playlists are a new feature in Ocarina 6 and are modeled after Gmail
|
||||
labels. Ocarina 6.0 will support two different playlists that the
|
||||
user can add tracks to: banned and favorites.
|
||||
|
||||
Future releases will add support for more playlists.
|
||||
|
||||
- Database:
|
||||
Database<database :: IndexEntry> playlist_db
|
||||
|
||||
- Default playlists:
|
||||
Favorites:
|
||||
The user will add music they really like to this playlist.
|
||||
|
||||
Banned:
|
||||
The user should add music they do not like to this playlist.
|
||||
Tracks should be removed from the Library playqueue when they
|
||||
are banned and added back to the playqueue when they are
|
||||
un-banned.
|
||||
|
||||
- API
|
||||
void playlist :: init():
|
||||
Load the playlist database.
|
||||
|
||||
void playlist :: add(name, track_id);
|
||||
Add the track_id to the playlist named "name". Save the
|
||||
database to disk.
|
||||
Throw -EEXIST if "name" does not exist.
|
||||
|
||||
void playlist :: del(name, track_id);
|
||||
Remove the track_id from the playlist named "name". Save the
|
||||
database to disk. Attempting to remove a track_id that does
|
||||
not exist is not an error.
|
||||
Throw -EEXIST if "name" does not exist.
|
||||
|
||||
const std::set<unsigned int> &playlist :: get_tracks(name);
|
||||
Return the set of tracks representing the requested group.
|
||||
Throw -EEXIST if "name" does not exist.
|
||||
|
||||
void playlist :: clear();
|
||||
This function only exists if CONFIG_TEST is enabled. Clear
|
||||
(reset) the playlist database.
|
|
@ -1,140 +0,0 @@
|
|||
== Files ==
|
||||
ocarina/include/
|
||||
playqueue.h
|
||||
ocarina/lib/
|
||||
playqueue.cpp
|
||||
|
||||
== Depends ==
|
||||
file
|
||||
|
||||
Playqueue: (lib/playqueue.cpp)
|
||||
Playqueues are a list of songs that the user has requested to play.
|
||||
|
||||
- Flags:
|
||||
enum playqueue_flags {
|
||||
PQ_ENABLED (1 << 0),
|
||||
PQ_RANDOM (1 << 1),
|
||||
PQ_REPEAT (1 << 2),
|
||||
};
|
||||
|
||||
- Sort order:
|
||||
enum sort_t {
|
||||
SORT_ARTIST = 1,
|
||||
SORT_ALBUM = 2,
|
||||
SORT_COUNT = 3,
|
||||
SORT_GENRE = 4,
|
||||
SORT_LENGTH = 5,
|
||||
SORT_PLAYED = 6,
|
||||
SORT_TITLE = 7,
|
||||
SORT_TRACK = 8,
|
||||
SORT_YEAR = 9,
|
||||
};
|
||||
|
||||
- Playqueue:
|
||||
class Playqueue {
|
||||
private:
|
||||
vector<track_id> tracks;
|
||||
list<sort_t> sort_order; /* default = { SORT_ARTIST,
|
||||
SORT_YEAR,
|
||||
SORT_TRACK };
|
||||
unsigned int cur;
|
||||
unsigned int flags;
|
||||
unsigned int length;
|
||||
public:
|
||||
Playqueue(flags);
|
||||
void write(File &);
|
||||
void read(File &);
|
||||
|
||||
void set_flag(playqueue_flags);
|
||||
void unset_flag(playqueue_flags);
|
||||
const unsigned int get_flags();
|
||||
string get_length();
|
||||
|
||||
unsigned int add(track_id);
|
||||
unsigned int add_front(track_id);
|
||||
void del(playqueue_id);
|
||||
unsigned int size();
|
||||
|
||||
void add_sort(sort_t);
|
||||
void reset_sort(sort_t);
|
||||
|
||||
unsigned int next();
|
||||
void reset_cur();
|
||||
}
|
||||
|
||||
File << flags << sort_order.size() << sort_order[0] << ... << sort_order[1];
|
||||
File << tracks.size() << tracks[0] << tracks[1] << ... << tracks[N];
|
||||
|
||||
- API
|
||||
Playqueue :: Playlist(unsigned int flags);
|
||||
Create a new playqueue with the appropriate flags set.
|
||||
sort_order = { (SORT_ARTIST, true), (SORT_YEAR, true),
|
||||
(SORT_TRACK, true) };
|
||||
|
||||
unsigned int Playqueue :: add(unsigned int track_id);
|
||||
unsigned int Playqueue :: add_front(unsigned int track_id);
|
||||
Add a new track to the tracks vector and return the index. If
|
||||
add_front is called, the track will be added to the front of
|
||||
the playqueue (index = 0).
|
||||
length += track.length.
|
||||
|
||||
void Playqueue :: del(unsigned int playqueue_id);
|
||||
Erase tracks[playqueue_id] from the tracks vector.
|
||||
length -= track.length.
|
||||
|
||||
void Playqueue :: del_track(unsigned int track_id);
|
||||
Erase all tracks with track id track_id.
|
||||
|
||||
void Playqueue :: set_flag(playqueue_flags flag);
|
||||
void Playqueue :: unset_flag(playqueue_flags flag);
|
||||
Set or unset the given flag.
|
||||
|
||||
const unsigned int Playqueue :: get_flags();
|
||||
Return the currently enabled flags.
|
||||
|
||||
song Playqueue :: get_length();
|
||||
Convert the length variable into a string and return the result
|
||||
to the caller.
|
||||
|
||||
unsigned int Playqueue :: size();
|
||||
Return tracks.size();
|
||||
|
||||
void Playqueue :: write(File &);
|
||||
void Playqueue :: read(File &);
|
||||
Read or write the playqueue to the file.
|
||||
|
||||
void Playqueue :: reset_sort();
|
||||
Reset the sort_order list to empty.
|
||||
|
||||
void Playqueue :: add_sort(sort_t type, bool ascending);
|
||||
Add a new term to the sort order.
|
||||
|
||||
void Playqueue :: sort();
|
||||
Perform a stable sort on the entire playqueue. Compare tracks
|
||||
based on the sort_order list.
|
||||
|
||||
unsigned int Playqueue :: next();
|
||||
Return the next track_id to play.
|
||||
|
||||
if (tracks.size() == 0)
|
||||
throw -EEXIST;
|
||||
|
||||
if (flags & PL_RANDOM):
|
||||
cur += rand() % tracks.size();
|
||||
else:
|
||||
cur += 1;
|
||||
|
||||
if (cur > = tracks.size())
|
||||
cur -= tracks.size();
|
||||
track = tracks[cur];
|
||||
|
||||
if (!(flags & PL_REPEAT)):
|
||||
length -= track.length;
|
||||
tracks.erase(cur);
|
||||
return track;
|
||||
|
||||
void Playqueue :: reset_cur();
|
||||
This function is intended to be used by the audio layer when
|
||||
managing the recently played playqueue.
|
||||
|
||||
cur = 0;
|
|
@ -1,17 +0,0 @@
|
|||
== Files ==
|
||||
ocarina/include/
|
||||
print.h
|
||||
|
||||
== Depends ==
|
||||
error
|
||||
|
||||
Printing: (include/print.h>
|
||||
Sometimes text needs to be printed to the screen so users (or debuggers)
|
||||
can trace what is going on.
|
||||
|
||||
API:
|
||||
void print(string fmt, ...);
|
||||
void dprint(string fmt, ...);
|
||||
Print text to the screen. The dprint() option will only only
|
||||
be implemented when when CONFIG_DEBUG or CONFIG_TEST is enabled,
|
||||
and will be an empty function otherwise.
|
|
@ -1,14 +0,0 @@
|
|||
== Files ==
|
||||
ocarina/include/
|
||||
version.h
|
||||
|
||||
== Depends ==
|
||||
error
|
||||
|
||||
Versioning: (include/version.h)
|
||||
This file contains a simple function for returning a string stating
|
||||
the current version.
|
||||
|
||||
API:
|
||||
const char *get_version();
|
||||
Returns a string describing the current version.
|
Loading…
Reference in New Issue