Abstract scripting calls into 'MediaPlayer' class

Makefile

@@ -32,9 +32,10 @@ APP_MIME_SIG = application/x-vnd.mediamonitor
 #	same name (source.c or source.cpp) are included from different directories.
 #	Also note that spaces in folder names do not work well with this Makefile.
 SRCS = src/App.cpp \
-	src/MainWindow.cpp \
 	src/CoverView.cpp \
 	src/LyricsView.cpp \
+	src/MainWindow.cpp \
+	src/MediaPlayer.cpp \
 	src/Song.cpp
 
 #	Specify the resource definition files to use. Full or relative paths can be

src/CoverView.cpp

@@ -9,7 +9,7 @@
 #include <Dragger.h>
 #include <Messenger.h>
 
-#include "Song.h"
+#include "MediaPlayer.h"
 
 
 CoverView::CoverView(BRect frame)
@@ -22,6 +22,8 @@ CoverView::CoverView(BRect frame)
 	fDragger->SetViewColor(B_TRANSPARENT_COLOR);
 	AddChild(fDragger);
 
+	fMediaPlayer = new MediaPlayer(0);
+
 	fCover = NULL;
 	SetViewColor(B_TRANSPARENT_COLOR);
 	Pulse();
@@ -32,6 +34,10 @@ CoverView::CoverView(BMessage* data)
 	:
 	BView(data)
 {
+	BMessage mediaplayer;
+	data->FindMessage("mediaplayer", &mediaplayer);
+	fMediaPlayer = new MediaPlayer(&mediaplayer);
+
 	fCover = NULL;
 	SetViewColor(B_TRANSPARENT_COLOR);
 	Pulse();
@@ -42,6 +48,10 @@ status_t
 CoverView::Archive(BMessage* data, bool deep) const
 {
 	status_t status = BView::Archive(data, deep);
+
+	BMessage mediaPlayer;
+	fMediaPlayer->Archive(&mediaPlayer);
+	data->AddMessage("mediaplayer", &mediaPlayer);
 	data->AddString("class", "CoverView");
 	data->AddString("add_on", "application/x-vnd.mediamonitor");
 	return status;	
@@ -60,17 +70,18 @@ CoverView::Instantiate(BMessage* data)
 void
 CoverView::Pulse()
 {
-	BString path = _GetCurrentPath();
-	if (path.IsEmpty() == false && path != fCurrentPath) {
-		fCurrentPath = path;
-		Song song(path.String());
+	Song song;
+	if (fMediaPlayer->CurrentItem(&song, false) == false) {
+		if (fCurrentSong.InitCheck()) {
+			fCurrentSong = song;
+			delete fCover;
+			Invalidate();
+		}
+	} else if (song != fCurrentSong) {
+		fCurrentSong = song;
 		delete fCover;
 		fCover = song.Cover();
 		Invalidate();
-	} else if (path.IsEmpty() && path != fCurrentPath) {
-		fCurrentPath = path;
-		delete fCover;
-		Invalidate();
 	}
 }
 
@@ -83,19 +94,3 @@ CoverView::Draw(BRect updateRect)
 	if (fCover != NULL && fCover->IsValid())
 		DrawBitmap(fCover, Bounds());
 }
-
-
-BString
-CoverView::_GetCurrentPath()
-{
-	BMessage message, reply;
-	message.what = B_GET_PROPERTY;
-	message.AddSpecifier("URI");
-	message.AddSpecifier("CurrentTrack");
-	message.AddSpecifier("Window", 0);
-	BMessenger("application/x-vnd.Haiku-MediaPlayer").SendMessage(&message, &reply);
-
-	BString result;
-	reply.FindString("result", &result);
-	return result.ReplaceAll("file://", "");
-}

src/CoverView.h

@@ -7,7 +7,10 @@
 
 #include <View.h>
 
+#include "Song.h"
+
 class BDragger;
+class MediaPlayer;
 
 
 class CoverView : public BView {
@@ -24,12 +27,12 @@ public:
 
 private:
 	void               _Init(BRect frame);
-	BString            _GetCurrentPath();
-	BString            _GetCoverPath();
+
+	MediaPlayer* fMediaPlayer;
+	Song fCurrentSong;
 
 	BDragger* fDragger;
 	BBitmap* fCover;
-	BString fCurrentPath;
 };
 
 #endif // COVERVIEW_H

src/LyricsView.cpp

@@ -5,8 +5,6 @@
 
 #include "LyricsView.h"
 
-#include <cstdio>
-
 #include <Dragger.h>
 #include <MenuItem.h>
 #include <Messenger.h>
@@ -14,7 +12,7 @@
 #include <ScrollView.h>
 #include <Window.h>
 
-#include "Song.h"
+#include "MediaPlayer.h"
 
 
 LyricsTextView::LyricsTextView(BRect frame, const char* name, BRect textFrame,
@@ -93,6 +91,8 @@ LyricsView::LyricsView(BRect frame)
 	fFgColor = ui_color(B_PANEL_TEXT_COLOR);
 	fBgColor = ui_color(B_PANEL_BACKGROUND_COLOR);
 
+	fMediaPlayer = new MediaPlayer(0);
+
 	_Init(frame);
 }
 
@@ -117,6 +117,10 @@ LyricsView::LyricsView(BMessage* data)
 	data->FindBool("transparent_inactivity", &fTransparentInactivity);
 	data->FindBool("transparent_dragger", &fTransparentDragger);
 
+	BMessage mediaplayer;
+	data->FindMessage("mediaplayer", &mediaplayer);
+	fMediaPlayer = new MediaPlayer(&mediaplayer);
+
 	_Init(Frame());
 }
 
@@ -125,15 +129,19 @@ status_t
 LyricsView::Archive(BMessage* data, bool deep) const
 {
 	status_t status = BView::Archive(data, deep);
+
+	BMessage mediaPlayer;
+	fMediaPlayer->Archive(&mediaPlayer);
+	data->AddMessage("mediaplayer", &mediaPlayer);
 	data->AddColor("background_color", fBgColor);
 	data->AddColor("foreground_color", fFgColor);
 	data->AddBool("autoscroll", fAutoScroll);
 	data->AddBool("transparent_inactivity", fTransparentInactivity);
 	data->AddBool("transparent_dragger", fTransparentDragger);
 
+
 	data->AddString("class", "LyricsView");
 	data->AddString("add_on", "application/x-vnd.mediamonitor");
-	data->PrintToStream();
 	return status;	
 }
 
@@ -178,7 +186,7 @@ LyricsView::MessageReceived(BMessage* msg)
 			if (msg->what == LYRICS_TRANSPARENTLY_DRAG)
 				fTransparentDragger = !fTransparentDragger;
 
-			if (fCurrentPath.IsEmpty())
+			if (fCurrentSong.InitCheck() == false)
 				_ClearText();
 			break;
 		}
@@ -192,16 +200,20 @@ LyricsView::MessageReceived(BMessage* msg)
 void
 LyricsView::Pulse()
 {
-	BString path = _GetCurrentPath();
-	if (path.IsEmpty() == false && path != fCurrentPath) {
-		fCurrentPath = path;
-		Song song(path.String());
+	Song song;
+	if (fMediaPlayer->CurrentItem(&song, fAutoScroll) == false) {
+		if (fCurrentSong.InitCheck()) {
+			fCurrentSong = song;
+			_ClearText();
+		}
+		return;
+	}
+
+	if (song != fCurrentSong) {
+		fCurrentSong = song;
 		BString lyrics;
 		song.Lyrics(&lyrics);
 		_SetText(lyrics.String());
-	} else if (path.IsEmpty() && path != fCurrentPath) {
-		fCurrentPath = path;
-		_ClearText();
 	}
 
 	if (fAutoScroll) {
@@ -334,45 +346,12 @@ LyricsView::_RightClickPopUp()
 }
 
 
-BString
-LyricsView::_GetCurrentPath()
-{
-	BMessage message, reply;
-	message.what = B_GET_PROPERTY;
-	message.AddSpecifier("URI");
-	message.AddSpecifier("CurrentTrack");
-	message.AddSpecifier("Window", 0);
-	BMessenger("application/x-vnd.Haiku-MediaPlayer").SendMessage(&message, &reply);
-
-	BString result;
-	reply.FindString("result", &result);
-	return result.ReplaceAll("file://", "");
-}
-
-
 float
 LyricsView::_GetPositionProportion()
 {
-	int64 position = _GetIntProperty("Position");
-	int64 duration = _GetIntProperty("Duration", true);
+	int64 position = fMediaPlayer->Position();
+	int64 duration = fCurrentSong.Duration();
 	if (position >= 0 && duration > 0)
 		return (float)position / (float)duration;
 	return -1.0;
 }
-
-
-int64
-LyricsView::_GetIntProperty(const char* specifier, bool currentItem)
-{
-	BMessage message, reply;
-	message.what = B_GET_PROPERTY;
-	message.AddSpecifier(specifier);
-	if (currentItem)
-		message.AddSpecifier("CurrentTrack");
-	message.AddSpecifier("Window", 0);
-	BMessenger("application/x-vnd.Haiku-MediaPlayer").SendMessage(&message, &reply);
-
-	int64 result = -1;
-	reply.FindInt64("result", &result);
-	return result;
-}

src/LyricsView.h

@@ -7,9 +7,12 @@
 
 #include <TextView.h>
 
+#include "Song.h"
+
 class BDragger;
 class BPopUpMenu;
 class BScrollView;
+class MediaPlayer;
 
 
 enum {
@@ -55,9 +58,10 @@ private:
 
 	BPopUpMenu*        _RightClickPopUp();
 
-	BString            _GetCurrentPath();
 	float              _GetPositionProportion();
-	int64              _GetIntProperty(const char* specifier, bool currentTrack = false);
+
+	MediaPlayer* fMediaPlayer;
+	Song fCurrentSong;
 
 	LyricsTextView* fTextView;
 	BScrollView* fScrollView;
@@ -69,7 +73,6 @@ private:
 
 	rgb_color fBgColor;
 	rgb_color fFgColor;
-	BString fCurrentPath;
 };
 
 #endif // LYRICSVIEW_H

src/MediaPlayer.cpp

@@ -0,0 +1,146 @@
+/*
+ * Copyright 2022, Jaidyn Levesque <jadedctrl@teknik.io>
+ * All rights reserved. Distributed under the terms of the MIT license.
+ */
+
+#include "MediaPlayer.h"
+
+#include <Messenger.h>
+#include <Url.h>
+
+#include "Song.h"
+
+
+MediaPlayer::MediaPlayer(int32 window)
+{
+	fWindowIndex = window;
+}
+
+
+MediaPlayer::MediaPlayer(BMessage* data)
+	:
+	BArchivable(data)
+{
+	fWindowIndex = data->GetInt32("_window", 0);
+}
+
+
+status_t
+MediaPlayer::Archive(BMessage* data, bool deep) const
+{
+	status_t status = BArchivable::Archive(data, deep);
+	data->AddInt32("_window", fWindowIndex);
+	data->AddString("class", "MediaPlayer");
+	data->AddString("add_on", "application/x-vnd.mediamonitor");
+	return status;
+}
+
+
+MediaPlayer*
+MediaPlayer::Instantiate(BMessage* data)
+{
+	if (!validate_instantiation(data, "MediaPlayer"))
+		return NULL;
+	return new MediaPlayer(data);
+}
+
+
+bool
+MediaPlayer::IsPlaying()
+{
+	BMessage reply;
+	_GetResponse("IsPlaying", &reply);
+	return reply.GetBool("result", false);
+}
+
+
+int64
+MediaPlayer::Position()
+{
+	BMessage reply;
+	_GetResponse("Position", &reply);
+	return reply.GetInt64("result", -1);
+}
+
+
+bool
+MediaPlayer::CurrentItem(Song* song, bool duration)
+{
+	return _GetSong(song, MP_CURRENT_TRACK, duration);
+}
+
+
+bool
+MediaPlayer::PlaylistItem(Song* song, int32 index, bool duration)
+{
+	return _GetSong(song, index, duration);
+}
+
+
+int32
+MediaPlayer::SetWindow(int32 index)
+{
+	if (index < CountWindows())
+		return fWindowIndex = index;
+	else
+		return -1;
+}
+
+
+int32
+MediaPlayer::CountWindows()
+{
+	BMessage reply;
+	_GetResponse("Window", &reply, MP_NO_TRACK, B_COUNT_PROPERTIES);
+
+	int32 count;
+	if (reply.FindInt32("result", &count) == B_OK)
+		return count;
+	return -1;
+}
+
+
+bool
+MediaPlayer::_GetSong(Song* song, int32 trackIndex, bool durationRequired)
+{
+	BMessage reply;
+	_GetResponse("URI", &reply, trackIndex);
+	BString uriString;
+	if (reply.FindString("result", &uriString) != B_OK)
+		return false;
+
+	int64 duration = -1;
+	if (durationRequired) {
+		_GetResponse("Duration", &reply, trackIndex);
+		if (reply.FindInt64("result", &duration) != B_OK)
+			return false;
+	}
+
+	*song = Song(_UriToPath(uriString), duration);
+	return true;
+}
+
+
+void
+MediaPlayer::_GetResponse(const char* attribute, BMessage* reply, int32 trackIndex, int32 what)
+{
+	BMessage message;
+	message.what = what;
+	message.AddSpecifier(attribute);
+	if (trackIndex > 0)
+		message.AddSpecifier("PlaylistTrack", trackIndex);
+	else if (trackIndex == MP_CURRENT_TRACK)
+		message.AddSpecifier("CurrentTrack");
+	message.AddSpecifier("Window", fWindowIndex);
+	BMessenger("application/x-vnd.Haiku-MediaPlayer").SendMessage(&message, reply);
+}
+
+
+const char*
+MediaPlayer::_UriToPath(BString URI)
+{
+	if (URI.StartsWith("file://"))
+		return URI.ReplaceFirst("file://", "").String();
+	else
+		return NULL;
+}

src/MediaPlayer.h

@@ -0,0 +1,48 @@
+/*
+ * Copyright 2022, Jaidyn Levesque <jadedctrl@teknik.io>
+ * All rights reserved. Distributed under the terms of the MIT license.
+ */
+#ifndef MEDIAPLAYER_H
+#define MEDIAPLAYER_H
+
+#include <AppDefs.h>
+#include <Archivable.h>
+#include <String.h>
+
+class BMessage;
+class Song;
+
+
+enum {
+	MP_CURRENT_TRACK = -1,
+	MP_NO_TRACK = -2
+};
+
+
+class MediaPlayer : public BArchivable {
+public:
+	                     MediaPlayer(int32 window = 0);
+	                     MediaPlayer(BMessage* archive);
+
+	virtual status_t     Archive(BMessage* data, bool deep = true) const;
+	static  MediaPlayer* Instantiate(BMessage* data);
+
+
+	        bool         IsPlaying();
+	        int64        Position();
+	        bool         CurrentItem(Song* song, bool duration = true);
+	        bool         PlaylistItem(Song* song, int32 index, bool duration = true);
+
+	        int32        SetWindow(int32 index);
+	        int32        CountWindows();
+
+private:
+	        bool         _GetSong(Song* song, int32 trackIndex, bool durationRequired = true);
+	        void         _GetResponse(const char* attribute, BMessage* reply,
+		                              int32 trackIndex = MP_NO_TRACK, int32 what = B_GET_PROPERTY);
+	        const char*  _UriToPath(BString URI);
+
+	int32 fWindowIndex;
+};
+
+#endif // MEDIAPLAYER_H

src/Song.cpp

@@ -13,9 +13,22 @@
 #include <TranslationUtils.h>
 
 
-Song::Song(const char* path)
+Song::Song()
+{
+}
+
+
+Song::Song(const char* path, int64 duration)
 {
 	fPath = BPath(path);
+	fDuration = duration;
+}
+
+
+bool
+Song::InitCheck()
+{
+	return fPath.InitCheck() == B_OK && fDuration >= -1;
 }
 
 
@@ -44,6 +57,20 @@ Song::Cover()
 }
 
 
+BPath
+Song::Path()
+{
+	return fPath;
+}
+
+
+int64
+Song::Duration()
+{
+	return fDuration;
+}
+
+
 // Our song's leaf, sans file extension
 const char*
 Song::_FileLeaf()

src/Song.h

@@ -11,10 +11,32 @@ class BBitmap;
 
 class Song {
 public:
-	            Song(const char* path);
+	            Song();
+	            Song(const char* path, int64 duration = -1);
+
+	bool        InitCheck();
+
 	status_t    Lyrics(BString* buffer);
 	BBitmap*    Cover();
 
+	BPath       Path();
+	int64       Duration();
+
+	int operator ==(Song a)
+	{
+		if (a.Path() == fPath)
+			return 1;
+		return 0;
+	}
+
+
+	int operator !=(Song a)
+	{
+		if (a.Path() != fPath)
+			return 1;
+		return 0;
+	}
+
 private:
 	const char* _FileLeaf();
 	BPath       _LyricsPath();
@@ -24,6 +46,7 @@ private:
 	BPath       _AnyFileOfType(const char* mimeRoot);
 	BPath       _FindFile(const char* mimeRoot, bool byName);
 
+	int64 fDuration;
 	BPath fPath;
 };