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[vlc] / modules / gui / skins2 / src / vlcproc.hpp
1 /*****************************************************************************
2  * vlcproc.hpp
3  *****************************************************************************
4  * Copyright (C) 2003 the VideoLAN team
5  * $Id$
6  *
7  * Authors: Cyril Deguet     <asmax@via.ecp.fr>
8  *          Olivier Teuli�e <ipkiss@via.ecp.fr>
9  *
10  * This program is free software; you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License as published by
12  * the Free Software Foundation; either version 2 of the License, or
13  * (at your option) any later version.
14  *
15  * This program is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18  * GNU General Public License for more details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with this program; if not, write to the Free Software
22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23  *****************************************************************************/
24
25 #ifndef VLCPROC_HPP
26 #define VLCPROC_HPP
27
28 #include <set>
29
30 #include "../vars/equalizer.hpp"
31 #include "../vars/playlist.hpp"
32 #include "../vars/playtree.hpp"
33 #include "../vars/time.hpp"
34 #include "../vars/volume.hpp"
35 #include "../utils/position.hpp"
36 #include "../utils/var_text.hpp"
37 #include "../commands/cmd_generic.hpp"
38
39 class OSTimer;
40 class VarBool;
41 struct aout_instance_t;
42
43
44 /// Singleton object handling VLC internal state and playlist
45 class VlcProc: public SkinObject
46 {
47     public:
48         /// Get the instance of VlcProc
49         /// Returns NULL if the initialization of the object failed
50         static VlcProc *instance( intf_thread_t *pIntf );
51
52         /// Delete the instance of VlcProc
53         static void destroy( intf_thread_t *pIntf );
54
55         /// Getter for the playlist variable
56         Playlist &getPlaylistVar() { return *((Playlist*)m_cPlaylist.get()); }
57
58         /// Getter for the playtree variable
59         Playtree &getPlaytreeVar() { return *((Playtree*)m_cPlaytree.get()); }
60
61         /// Getter for the time variable
62         StreamTime &getTimeVar() { return *((StreamTime*)(m_cVarTime.get())); }
63
64         /// Getter for the volume variable
65         Volume &getVolumeVar() { return *((Volume*)(m_cVarVolume.get())); }
66
67         /// Getter for the stream name variable
68         VarText &getStreamNameVar()
69            { return *((VarText*)(m_cVarStreamName.get())); }
70
71         /// Getter for the stream URI variable
72         VarText &getStreamURIVar()
73             { return *((VarText*)(m_cVarStreamURI.get())); }
74
75         /// Getter for the stream bitrate variable
76         VarText &getStreamBitRateVar()
77             { return *((VarText*)(m_cVarStreamBitRate.get())); }
78
79         /// Getter for the vout size variable
80         VarBox &getVoutSizeVar() { return m_varVoutSize; }
81
82         /// Set the vout window handle
83         void registerVoutWindow( void *pVoutWindow );
84
85         /// Unset the vout window handle
86         void unregisterVoutWindow( void *pVoutWindow );
87
88         /// Indicate whether the embedded video output is currently used
89         bool isVoutUsed() const { return m_pVout != NULL; }
90
91         /// If an embedded video output is used, drop it (i.e. tell it to stop
92         /// using our window handle)
93         void dropVout();
94
95     protected:
96         // Protected because it is a singleton
97         VlcProc( intf_thread_t *pIntf );
98         virtual ~VlcProc();
99
100     private:
101         /// Timer to call manage() regularly (via doManage())
102         OSTimer *m_pTimer;
103         /// Playlist variable
104         VariablePtr m_cPlaylist;
105         /// Playtree variable FIXME
106         VariablePtr m_cPlaytree;
107         VariablePtr m_cVarRandom;
108         VariablePtr m_cVarLoop;
109         VariablePtr m_cVarRepeat;
110         /// Variable for current position of the stream
111         VariablePtr m_cVarTime;
112         /// Variable for audio volume
113         VariablePtr m_cVarVolume;
114         /// Variable for current stream properties
115         VariablePtr m_cVarStreamName;
116         VariablePtr m_cVarStreamURI;
117         VariablePtr m_cVarStreamBitRate;
118         /// Variable for the "mute" state
119         VariablePtr m_cVarMute;
120         /// Variables related to the input
121         VariablePtr m_cVarPlaying;
122         VariablePtr m_cVarStopped;
123         VariablePtr m_cVarPaused;
124         VariablePtr m_cVarSeekable;
125         /// Variables related to the vout
126         VariablePtr m_cVarFullscreen;
127         VarBox m_varVoutSize;
128         VariablePtr m_cVarHasVout;
129         /// Equalizer variables
130         EqualizerBands m_varEqBands;
131         VariablePtr m_cVarEqPreamp;
132         VariablePtr m_cVarEqualizer;
133         /// Variable for DVD detection
134         VariablePtr m_cVarDvdActive;
135
136         /// Set of handles of vout windows
137         /**
138          * When changing the skin, the handles of the 2 skins coexist in the
139          * set (but this is temporary, until the old theme is destroyed).
140          */
141         set<void *> m_handleSet;
142         /// Vout thread
143         vout_thread_t *m_pVout;
144         /// Audio output
145         aout_instance_t *m_pAout;
146
147         /**
148          * Poll VLC internals to update the status (volume, current time in
149          * the stream, current filename, play/pause/stop status, ...)
150          * This function should be called regurlarly, since there is no
151          * callback mechanism (yet?) to automatically update a variable when
152          * the internal status changes
153          */
154         void manage();
155
156         /// Define the command that calls manage()
157         DEFINE_CALLBACK( VlcProc, Manage );
158
159         /// Refresh audio variables
160         void refreshAudio();
161
162         /// Update the stream name variable
163         void updateStreamName( playlist_t *p_playlist );
164
165         /// Callback for intf-change variable
166         static int onIntfChange( vlc_object_t *pObj, const char *pVariable,
167                                  vlc_value_t oldVal, vlc_value_t newVal,
168                                  void *pParam );
169
170         /// Callback for intf-show variable
171         static int onIntfShow( vlc_object_t *pObj, const char *pVariable,
172                                vlc_value_t oldVal, vlc_value_t newVal,
173                                void *pParam );
174
175         /// Callback for item-change variable
176         static int onItemChange( vlc_object_t *pObj, const char *pVariable,
177                                  vlc_value_t oldVal, vlc_value_t newVal,
178                                  void *pParam );
179
180         /// Callback for item-change variable
181         static int onItemAppend( vlc_object_t *pObj, const char *pVariable,
182                                  vlc_value_t oldVal, vlc_value_t newVal,
183                                  void *pParam );
184
185         /// Callback for item-change variable
186         static int onItemDelete( vlc_object_t *pObj, const char *pVariable,
187                                  vlc_value_t oldVal, vlc_value_t newVal,
188                                  void *pParam );
189
190
191         /// Callback for playlist-current variable
192         static int onPlaylistChange( vlc_object_t *pObj, const char *pVariable,
193                                      vlc_value_t oldVal, vlc_value_t newVal,
194                                      void *pParam );
195
196         /// Callback for skins2-to-load variable
197         static int onSkinToLoad( vlc_object_t *pObj, const char *pVariable,
198                                  vlc_value_t oldVal, vlc_value_t newVal,
199                                  void *pParam );
200
201         /// Callback for interaction variable
202         static int onInteraction( vlc_object_t *pObj, const char *pVariable,
203                                   vlc_value_t oldVal, vlc_value_t newVal,
204                                   void *pParam );
205
206         /// Callback to request a vout window
207         static void *getWindow( intf_thread_t *pIntf, vout_thread_t *pVout,
208                                 int *pXHint, int *pYHint,
209                                 unsigned int *pWidthHint,
210                                 unsigned int *pHeightHint );
211
212         /// Callback to release a vout window
213         static void releaseWindow( intf_thread_t *pIntf, void *pWindow );
214
215         /// Callback to change a vout window
216         static int controlWindow( intf_thread_t *pIntf, void *pWindow,
217                                   int query, va_list args );
218
219         /// Callback for equalizer-bands variable
220         static int onEqBandsChange( vlc_object_t *pObj, const char *pVariable,
221                                     vlc_value_t oldVal, vlc_value_t newVal,
222                                     void *pParam );
223
224         /// Callback for equalizer-preamp variable
225         static int onEqPreampChange( vlc_object_t *pObj, const char *pVariable,
226                                      vlc_value_t oldVal, vlc_value_t newVal,
227                                      void *pParam );
228 };
229
230
231 #endif