e144e8be961fb618c413f56a2bc88e3cb4f1442e
[vlc.git] / src / control / mediacontrol_audio_video.c
1 /*****************************************************************************
2  * audio_video.c: Audio/Video management : volume, snapshot, OSD
3  *****************************************************************************
4  * Copyright (C) 2005 the VideoLAN team
5  * $Id$
6  *
7  * Authors: Olivier Aubert <olivier.aubert@liris.univ-lyon1.fr>
8  *
9  * This program is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * This program is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17  * GNU General Public License for more details.
18  *
19  * You should have received a copy of the GNU General Public License
20  * along with this program; if not, write to the Free Software
21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22  *****************************************************************************/
23
24 #include "mediacontrol_internal.h"
25
26 #include <vlc/mediacontrol.h>
27 #include <vlc/libvlc.h>
28
29 #include <vlc_playlist.h>
30
31 #include <vlc_aout.h>
32
33 #include <vlc_vout.h>
34 #include <vlc_osd.h>
35
36 #include <stdlib.h>                                      /* malloc(), free() */
37 #include <string.h>
38
39 #include <errno.h>                                                 /* ENOMEM */
40 #include <stdio.h>
41 #include <ctype.h>
42
43 #ifdef HAVE_UNISTD_H
44 #    include <unistd.h>
45 #endif
46 #ifdef HAVE_SYS_TIME_H
47 #    include <sys/time.h>
48 #endif
49 #ifdef HAVE_SYS_TYPES_H
50 #    include <sys/types.h>
51 #endif
52
53 mediacontrol_RGBPicture *
54 mediacontrol_snapshot( mediacontrol_Instance *self,
55                        const mediacontrol_Position * a_position,
56                        mediacontrol_Exception *exception )
57 {
58     vlc_object_t* p_cache;
59     vout_thread_t* p_vout;
60     mediacontrol_RGBPicture *p_pic = NULL;
61     char path[256];
62     snapshot_t *p_snapshot;
63
64     exception=mediacontrol_exception_init( exception );
65
66     p_vout = vlc_object_find( self->p_playlist, VLC_OBJECT_VOUT, FIND_CHILD );
67     if( ! p_vout )
68     {
69         RAISE_NULL( mediacontrol_InternalException, "No video output" );
70     }
71     p_cache = vlc_object_create( self->p_playlist, VLC_OBJECT_GENERIC );
72     if( p_cache == NULL )
73     {
74         vlc_object_release( p_vout );
75         RAISE_NULL( mediacontrol_InternalException, "Out of memory" );
76     }
77     snprintf( path, 255, "object:%d", p_cache->i_object_id );
78     var_SetString( p_vout, "snapshot-path", path );
79     var_SetString( p_vout, "snapshot-format", "png" );
80
81     vlc_mutex_lock( &p_cache->object_lock );
82     vout_Control( p_vout, VOUT_SNAPSHOT );
83     vlc_cond_wait( &p_cache->object_wait, &p_cache->object_lock );
84     vlc_object_release( p_vout );
85
86     p_snapshot = ( snapshot_t* ) p_cache->p_private;
87     vlc_object_destroy( p_cache );
88
89     if( p_snapshot )
90     {
91         p_pic = _mediacontrol_createRGBPicture( p_snapshot->i_width,
92                                                 p_snapshot->i_height,
93                                                 VLC_FOURCC( 'p','n','g',' ' ),
94                                                 p_snapshot->date,
95                                                 p_snapshot->p_data,
96                                                 p_snapshot->i_datasize );
97         if( !p_pic )
98         {
99             free( p_snapshot->p_data );
100             free( p_snapshot );
101             RAISE_NULL( mediacontrol_InternalException, "Out of memory" );
102         }
103     }
104     else
105     {
106         RAISE_NULL( mediacontrol_InternalException, "Snapshot exception" );
107     }
108     return p_pic;
109 }
110
111 mediacontrol_RGBPicture **
112 mediacontrol_all_snapshots( mediacontrol_Instance *self,
113                             mediacontrol_Exception *exception )
114 {
115     exception=mediacontrol_exception_init( exception );
116
117     RAISE_NULL( mediacontrol_InternalException, "unsupported method" );
118 }
119
120 int mediacontrol_showtext( vout_thread_t *p_vout, int i_channel,
121                            char *psz_string, text_style_t *p_style,
122                            int i_flags, int i_hmargin, int i_vmargin,
123                            mtime_t i_start, mtime_t i_stop )
124 {
125     subpicture_t *p_spu;
126     video_format_t fmt;
127
128     if( !psz_string ) return VLC_EGENERIC;
129
130     p_spu = spu_CreateSubpicture( p_vout->p_spu );
131     if( !p_spu ) return VLC_EGENERIC;
132
133     /* Create a new subpicture region */
134     memset( &fmt, 0, sizeof(video_format_t) );
135     fmt.i_chroma = VLC_FOURCC('T','E','X','T');
136     fmt.i_aspect = 0;
137     fmt.i_width = fmt.i_height = 0;
138     fmt.i_x_offset = fmt.i_y_offset = 0;
139     p_spu->p_region = p_spu->pf_create_region( VLC_OBJECT(p_vout), &fmt );
140     if( !p_spu->p_region )
141     {
142         msg_Err( p_vout, "cannot allocate SPU region" );
143         spu_DestroySubpicture( p_vout->p_spu, p_spu );
144         return VLC_EGENERIC;
145     }
146
147     p_spu->p_region->psz_text = strdup( psz_string );
148     p_spu->i_start = i_start;
149     p_spu->i_stop = i_stop;
150     p_spu->b_ephemer = VLC_FALSE;
151     p_spu->b_absolute = VLC_FALSE;
152
153     p_spu->i_x = i_hmargin;
154     p_spu->i_y = i_vmargin;
155     p_spu->i_flags = i_flags;
156     p_spu->i_channel = i_channel;
157
158     spu_DisplaySubpicture( p_vout->p_spu, p_spu );
159
160     return VLC_SUCCESS;
161 }
162
163
164 void
165 mediacontrol_display_text( mediacontrol_Instance *self,
166                            const char * message,
167                            const mediacontrol_Position * begin,
168                            const mediacontrol_Position * end,
169                            mediacontrol_Exception *exception )
170 {
171     input_thread_t *p_input = NULL;
172     vout_thread_t *p_vout = NULL;
173     char* psz_message;
174
175     psz_message = strdup( message );
176     if( !psz_message )
177     {
178         RAISE_VOID( mediacontrol_InternalException, "no more memory" );
179     }
180
181     p_vout = vlc_object_find( self->p_playlist, VLC_OBJECT_VOUT, FIND_CHILD );
182     if( ! p_vout )
183     {
184         RAISE_VOID( mediacontrol_InternalException, "no video output" );
185     }
186
187     if( begin->origin == mediacontrol_RelativePosition &&
188         begin->value == 0 &&
189         end->origin == mediacontrol_RelativePosition )
190     {
191         mtime_t i_duration = 0;
192         mtime_t i_now = mdate();
193
194         i_duration = 1000 * mediacontrol_unit_convert(
195                                                 self->p_playlist->p_input,
196                                                 end->key,
197                                                 mediacontrol_MediaTime,
198                                                 end->value );
199
200         mediacontrol_showtext( p_vout, DEFAULT_CHAN, psz_message, NULL,
201                                OSD_ALIGN_BOTTOM | OSD_ALIGN_LEFT, 0, 0,
202                                i_now, i_now + i_duration );
203     }
204     else
205     {
206         mtime_t i_debut, i_fin, i_now;
207
208         p_input = self->p_playlist->p_input;
209         if( ! p_input )
210         {
211             vlc_object_release( p_vout );
212             RAISE_VOID( mediacontrol_InternalException, "No input" );
213         }
214
215         /* FIXME */
216         /* i_now = input_ClockGetTS( p_input, NULL, 0 ); */
217         i_now = mdate();
218
219         i_debut = mediacontrol_position2microsecond( p_input,
220                                             ( mediacontrol_Position* ) begin );
221         i_debut += i_now;
222
223         i_fin = mediacontrol_position2microsecond( p_input,
224                                           ( mediacontrol_Position * ) end );
225         i_fin += i_now;
226
227         vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN, psz_message, NULL,
228                                OSD_ALIGN_BOTTOM | OSD_ALIGN_LEFT, 0, 0,
229                                i_debut, i_fin );
230     }
231
232     vlc_object_release( p_vout );
233 }
234
235 unsigned short
236 mediacontrol_sound_get_volume( mediacontrol_Instance *self,
237                                mediacontrol_Exception *exception )
238 {
239     libvlc_exception_t ex;
240     int i_ret = 0;
241
242     mediacontrol_exception_init( exception );
243     libvlc_exception_init( &ex );
244
245     i_ret = libvlc_audio_get_volume( self->p_instance, &ex );
246     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
247     /* FIXME: Normalize in [0..100] */
248     return (unsigned short)i_ret;
249 }
250
251 void
252 mediacontrol_sound_set_volume( mediacontrol_Instance *self,
253                                const unsigned short volume,
254                                mediacontrol_Exception *exception )
255 {
256     /* FIXME: Normalize in [0..100] */
257     libvlc_exception_t ex;
258
259     mediacontrol_exception_init( exception );
260     libvlc_exception_init( &ex );
261
262     libvlc_audio_set_volume( self->p_instance, volume, &ex );
263     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
264 }
265
266 vlc_bool_t mediacontrol_set_visual( mediacontrol_Instance *self,
267                                     WINDOWHANDLE visual_id,
268                                     mediacontrol_Exception *exception )
269 {
270     libvlc_exception_t ex;
271
272     mediacontrol_exception_init( exception );
273     libvlc_exception_init( &ex );
274
275     libvlc_video_set_parent( self->p_instance, visual_id, &ex );
276     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
277     return VLC_TRUE;
278 }
279
280 int
281 mediacontrol_get_rate( mediacontrol_Instance *self,
282                        mediacontrol_Exception *exception )
283 {
284     libvlc_exception_t ex;
285     libvlc_input_t* p_input;
286     int i_ret;
287
288     mediacontrol_exception_init( exception );
289     libvlc_exception_init( &ex );
290
291     p_input = libvlc_playlist_get_input( self->p_instance, &ex );
292     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
293
294     i_ret = libvlc_input_get_rate( p_input, &ex );
295     libvlc_input_free( p_input );
296     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
297
298     return i_ret / 10;
299 }
300
301 void
302 mediacontrol_set_rate( mediacontrol_Instance *self,
303                        const int rate,
304                        mediacontrol_Exception *exception )
305 {
306     libvlc_exception_t ex;
307     libvlc_input_t* p_input;
308
309     mediacontrol_exception_init( exception );
310     libvlc_exception_init( &ex );
311
312     p_input = libvlc_playlist_get_input( self->p_instance, &ex );
313     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
314
315     libvlc_input_set_rate( p_input, rate * 10, &ex );
316     libvlc_input_free( p_input );
317     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
318 }
319
320 int
321 mediacontrol_get_fullscreen( mediacontrol_Instance *self,
322                              mediacontrol_Exception *exception )
323 {
324     libvlc_exception_t ex;
325     libvlc_input_t* p_input;
326     int i_ret;
327
328     mediacontrol_exception_init( exception );
329     libvlc_exception_init( &ex );
330
331     p_input = libvlc_playlist_get_input( self->p_instance, &ex );
332     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
333
334     i_ret = libvlc_get_fullscreen( p_input, &ex );
335     libvlc_input_free( p_input );
336     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
337
338     return i_ret;
339 }
340
341 void
342 mediacontrol_set_fullscreen( mediacontrol_Instance *self,
343                              const int b_fullscreen,
344                              mediacontrol_Exception *exception )
345 {
346     libvlc_exception_t ex;
347     libvlc_input_t* p_input;
348
349     mediacontrol_exception_init( exception );
350     libvlc_exception_init( &ex );
351
352     p_input = libvlc_playlist_get_input( self->p_instance, &ex );
353     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
354
355     libvlc_set_fullscreen( p_input, b_fullscreen, &ex );
356     libvlc_input_free( p_input );
357     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
358 }