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faa5d15e1e
...
d666c8fb49
2 changed files with 130 additions and 103 deletions
231
src/playbin.vala
231
src/playbin.vala
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@ -57,9 +57,6 @@ public class Playbin : GLib.Object {
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public ListStore _play_queue;
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public ListModel play_queue { get { return this._play_queue; } }
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// try to prevent wait_event to be called twice
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private bool is_handling_event = false;
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private async Mpv.Error mpv_command_async (string[] args) {
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CommandCallback cc = {};
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@ -70,6 +67,9 @@ public class Playbin : GLib.Object {
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return cc.error;
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}
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// should be Mpv.WakeupCallback, but i think there's a vala bug here
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private SourceOnceFunc wakeup_callback; // anchor reference here, mpv won't remind us
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public Playbin () {
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this._play_queue = new ListStore (typeof (Subsonic.Song));
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@ -83,126 +83,153 @@ public class Playbin : GLib.Object {
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assert (this.mpv.observe_property (2, "playlist-pos", Mpv.Format.INT64) >= 0);
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assert (this.mpv.observe_property (3, "pause", Mpv.Format.FLAG) >= 0);
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this.mpv.wakeup_callback = () => {
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Idle.add (() => {
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if (this.is_handling_event) {
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warning ("main thread mpv wakeup callback called twice");
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return false;
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}
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this.is_handling_event = true;
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int wakeup_fds[2];
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try {
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assert (Unix.open_pipe (wakeup_fds, 0));
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} catch (Error e) {
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error (@"could not open pipe for mpv wakeup: $(e.message)");
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}
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while (true) {
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var event = this.mpv.wait_event (0.0);
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if (event.event_id == Mpv.EventId.NONE) break;
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IOChannel wakeup_read = new IOChannel.unix_new (wakeup_fds[0]);
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IOChannel wakeup_write = new IOChannel.unix_new (wakeup_fds[1]);
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switch (event.event_id) {
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case Mpv.EventId.PROPERTY_CHANGE:
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var data = event.parse_property ();
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switch (event.reply_userdata) {
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case 0:
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assert (data.name == "time-pos");
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if (data.format == Mpv.Format.NONE) {
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this.position = 0.0;
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} else {
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this.position = data.parse_double ();
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}
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break;
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wakeup_read.set_close_on_unref (true);
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wakeup_write.set_close_on_unref (true);
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case 1:
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assert (data.name == "duration");
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if (data.format == Mpv.Format.NONE) {
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// this.duration = 0.0; i think this prevents the fallback below from working
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} else {
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this.duration = data.parse_double ();
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}
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break;
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try {
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wakeup_read.set_encoding (null);
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wakeup_write.set_encoding (null);
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wakeup_write.set_buffered (false);
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} catch (Error e) {
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error (@"could not set up pipes for mpv wakeup: $(e.message)");
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}
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case 2:
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// here as a sanity check
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// should always match our own play_queu_position/state
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assert (data.name == "playlist-pos");
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int64 playlist_pos = data.parse_int64 ();
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if (playlist_pos < 0) {
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if (this.state != PlaybinState.STOPPED) {
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error ("mpv has no current playlist entry, but we think it's index %u", this.play_queue_position);
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}
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assert (this.play_queue_position == this.play_queue.get_n_items ());
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} else {
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if (this.state == PlaybinState.STOPPED) {
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error ("mpv is at playlist entry %u, but we're stopped", (uint) playlist_pos);
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}
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if (this.play_queue_position != (uint) playlist_pos) {
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error ("mpv is at playlist entry %u, but we think it's %u", (uint) playlist_pos, this.play_queue_position);
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}
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}
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break;
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this.wakeup_callback = () => {
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try {
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wakeup_write.write_chars ({0}, null);
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} catch (Error e) {
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error (@"could not write to mpv wakeup pipe: $(e.message)");
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}
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};
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this.mpv.wakeup_callback = this.wakeup_callback;
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case 3:
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// also here as a sanity check
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// should always match our own state
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assert (data.name == "pause");
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bool pause = data.parse_flag ();
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if (pause && this.state != PlaybinState.PAUSED) {
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error (@"mpv is paused, but we are @(this.state)");
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}
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if (!pause && this.state == PlaybinState.PAUSED) {
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error ("mpv is not paused, but we are paused");
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}
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break;
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assert (0 < wakeup_read.add_watch (IOCondition.IN, (source, condition) => {
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try {
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wakeup_read.read_chars ({0}, null);
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} catch (Error e) {
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error (@"could not read from mpv wakeup pipe: $(e.message)");
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}
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default:
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assert (false);
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break;
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while (true) {
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var event = this.mpv.wait_event (0.0);
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if (event.event_id == Mpv.EventId.NONE) break;
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switch (event.event_id) {
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case Mpv.EventId.PROPERTY_CHANGE:
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var data = event.parse_property ();
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switch (event.reply_userdata) {
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case 0:
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assert (data.name == "time-pos");
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if (data.format == Mpv.Format.NONE) {
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this.position = 0.0;
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} else {
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this.position = data.parse_double ();
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}
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break;
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case Mpv.EventId.START_FILE:
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debug ("START_FILE received");
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// estimate duration from api data
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// while mpv doesn't know it
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this.duration = ((Subsonic.Song) this._play_queue.get_item (this.play_queue_position)).duration;
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this.new_track ();
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case 1:
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assert (data.name == "duration");
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if (data.format == Mpv.Format.NONE) {
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// this.duration = 0.0; i think this prevents the fallback below from working
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} else {
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this.duration = data.parse_double ();
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}
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break;
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case Mpv.EventId.END_FILE:
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var data = event.parse_end_file ();
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debug (@"END_FILE received (reason: $(data.reason))");
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if (data.error < 0) {
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warning ("playback of track aborted: %s", data.error.to_string ());
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}
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if (data.reason == Mpv.EndFileReason.EOF) {
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// assume this is a proper transition
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this.play_queue_position += 1;
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if (this.play_queue_position == this._play_queue.get_n_items ()) {
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// reached the end (?)
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this.state = PlaybinState.STOPPED;
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this.stopped ();
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case 2:
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// here as a sanity check
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// should always match our own play_queu_position/state
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assert (data.name == "playlist-pos");
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int64 playlist_pos = data.parse_int64 ();
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if (playlist_pos < 0) {
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if (this.state != PlaybinState.STOPPED) {
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error ("mpv has no current playlist entry, but we think it's index %u", this.play_queue_position);
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}
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assert (this.play_queue_position == this.play_queue.get_n_items ());
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} else {
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if (this.state == PlaybinState.STOPPED) {
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error ("mpv is at playlist entry %u, but we're stopped", (uint) playlist_pos);
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}
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if (this.play_queue_position != (uint) playlist_pos) {
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error ("mpv is at playlist entry %u, but we think it's %u", (uint) playlist_pos, this.play_queue_position);
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}
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}
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break;
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case Mpv.EventId.COMMAND_REPLY:
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unowned CommandCallback *cc = (CommandCallback *) event.reply_userdata;
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cc.error = event.error;
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cc.callback ();
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case 3:
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// also here as a sanity check
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// should always match our own state
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assert (data.name == "pause");
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bool pause = data.parse_flag ();
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if (pause && this.state != PlaybinState.PAUSED) {
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error (@"mpv is paused, but we are @(this.state)");
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}
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if (!pause && this.state == PlaybinState.PAUSED) {
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error ("mpv is not paused, but we are paused");
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}
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break;
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default:
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// ignore by default
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assert (false);
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break;
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}
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break;
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case Mpv.EventId.START_FILE:
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debug ("START_FILE received");
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// estimate duration from api data
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// while mpv doesn't know it
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this.duration = ((Subsonic.Song) this._play_queue.get_item (this.play_queue_position)).duration;
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this.new_track ();
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break;
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case Mpv.EventId.END_FILE:
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var data = event.parse_end_file ();
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debug (@"END_FILE received (reason: $(data.reason))");
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if (data.error < 0) {
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warning ("playback of track aborted: %s", data.error.to_string ());
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}
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if (data.reason == Mpv.EndFileReason.EOF) {
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// assume this is a proper transition
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this.play_queue_position += 1;
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if (this.play_queue_position == this._play_queue.get_n_items ()) {
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// reached the end (?)
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this.state = PlaybinState.STOPPED;
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this.stopped ();
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}
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}
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break;
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case Mpv.EventId.COMMAND_REPLY:
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unowned CommandCallback *cc = (CommandCallback *) event.reply_userdata;
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cc.error = event.error;
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cc.callback ();
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break;
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default:
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// ignore by default
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break;
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}
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}
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this.is_handling_event = false;
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return false;
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});
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};
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return true;
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}));
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}
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public void seek (double position) {
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@ -43,7 +43,7 @@ namespace Mpv {
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[CCode (cname = "mpv_wait_event")]
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public unowned Event? wait_event (double timeout);
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public WakeupCallback wakeup_callback {
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public unowned WakeupCallback wakeup_callback {
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[CCode (cname = "mpv_set_wakeup_callback")] set;
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}
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