src/control/mediacontrol_audio_video.c: to create a generic object,
[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 #ifdef HAVE_CONFIG_H
25 # include "config.h"
26 #endif
27 #include "mediacontrol_internal.h"
28 #include "libvlc_internal.h"
29
30 #include <vlc/mediacontrol.h>
31 #include <vlc/libvlc.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     input_thread_t *p_input;
61     mediacontrol_RGBPicture *p_pic = NULL;
62     char path[256];
63     snapshot_t *p_snapshot;
64     libvlc_exception_t ex;
65
66     libvlc_exception_init( &ex );
67     mediacontrol_exception_init( exception );
68
69     p_input = libvlc_get_input_thread( self->p_media_player, &ex );
70     if( ! p_input )
71     {
72         RAISE_NULL( mediacontrol_InternalException, "No input" );
73     }
74     p_vout = vlc_object_find( p_input, VLC_OBJECT_VOUT, FIND_CHILD );
75     if( ! p_vout )
76     {
77         RAISE_NULL( mediacontrol_InternalException, "No video output" );
78     }
79     p_cache = vlc_object_create( p_input, sizeof( vlc_object_t ) );
80     if( p_cache == NULL )
81     {
82         vlc_object_release( p_vout );
83         vlc_object_release( p_input );
84         RAISE_NULL( mediacontrol_InternalException, "Out of memory" );
85     }
86     snprintf( path, 255, "object:%d", p_cache->i_object_id );
87     var_SetString( p_vout, "snapshot-path", path );
88     var_SetString( p_vout, "snapshot-format", "png" );
89
90     vlc_object_lock( p_cache );
91     vout_Control( p_vout, VOUT_SNAPSHOT );
92     vlc_object_wait( p_cache );
93     vlc_object_release( p_vout );
94
95     p_snapshot = ( snapshot_t* ) p_cache->p_private;
96     vlc_object_unlock( p_cache );
97     vlc_object_release( p_cache );
98     vlc_object_release( p_input );
99
100     if( p_snapshot )
101     {
102         p_pic = private_mediacontrol_createRGBPicture( p_snapshot->i_width,
103                                p_snapshot->i_height,
104                                VLC_FOURCC( 'p','n','g',' ' ),
105                                p_snapshot->date,
106                                p_snapshot->p_data,
107                                p_snapshot->i_datasize );
108         if( !p_pic )
109         {
110             free( p_snapshot->p_data );
111             free( p_snapshot );
112             RAISE_NULL( mediacontrol_InternalException, "Out of memory" );
113         }
114     }
115     else
116     {
117         RAISE_NULL( mediacontrol_InternalException, "Snapshot exception" );
118     }
119     return p_pic;
120 }
121
122 static
123 int mediacontrol_showtext( vout_thread_t *p_vout, int i_channel,
124                            char *psz_string, text_style_t *p_style,
125                            int i_flags, int i_hmargin, int i_vmargin,
126                            mtime_t i_start, mtime_t i_stop )
127 {
128     subpicture_t *p_spu;
129     video_format_t fmt;
130
131     if( !psz_string ) return VLC_EGENERIC;
132
133     p_spu = spu_CreateSubpicture( p_vout->p_spu );
134     if( !p_spu ) return VLC_EGENERIC;
135
136     /* Create a new subpicture region */
137     memset( &fmt, 0, sizeof(video_format_t) );
138     fmt.i_chroma = VLC_FOURCC('T','E','X','T');
139     fmt.i_aspect = 0;
140     fmt.i_width = fmt.i_height = 0;
141     fmt.i_x_offset = fmt.i_y_offset = 0;
142     p_spu->p_region = p_spu->pf_create_region( VLC_OBJECT(p_vout), &fmt );
143     if( !p_spu->p_region )
144     {
145         msg_Err( p_vout, "cannot allocate SPU region" );
146         spu_DestroySubpicture( p_vout->p_spu, p_spu );
147         return VLC_EGENERIC;
148     }
149
150     p_spu->p_region->psz_text = strdup( psz_string );
151     p_spu->p_region->i_align = i_flags & SUBPICTURE_ALIGN_MASK;
152     p_spu->p_region->p_style = p_style;
153     p_spu->i_start = i_start;
154     p_spu->i_stop = i_stop;
155     p_spu->b_ephemer = false;
156     p_spu->b_absolute = false;
157
158     p_spu->i_x = i_hmargin;
159     p_spu->i_y = i_vmargin;
160     p_spu->i_flags = i_flags & ~SUBPICTURE_ALIGN_MASK;
161     p_spu->i_channel = i_channel;
162
163     spu_DisplaySubpicture( p_vout->p_spu, p_spu );
164
165     return VLC_SUCCESS;
166 }
167
168
169 void
170 mediacontrol_display_text( mediacontrol_Instance *self,
171                            const char * message,
172                            const mediacontrol_Position * begin,
173                            const mediacontrol_Position * end,
174                            mediacontrol_Exception *exception )
175 {
176     vout_thread_t *p_vout = NULL;
177     char* psz_message;
178     input_thread_t *p_input;
179     libvlc_exception_t ex;
180
181     libvlc_exception_init( &ex );
182     mediacontrol_exception_init( exception );
183
184     p_input = libvlc_get_input_thread( self->p_media_player, &ex );
185     if( ! p_input )
186     {
187         RAISE_VOID( mediacontrol_InternalException, "No input" );
188     }
189     p_vout = vlc_object_find( p_input, VLC_OBJECT_VOUT, FIND_CHILD );
190     if( ! p_vout )
191     {
192         RAISE_VOID( mediacontrol_InternalException, "No video output" );
193     }
194
195     psz_message = strdup( message );
196     if( !psz_message )
197     {
198         RAISE_VOID( mediacontrol_InternalException, "no more memory" );
199     }
200
201     if( begin->origin == mediacontrol_RelativePosition &&
202         begin->value == 0 &&
203         end->origin == mediacontrol_RelativePosition )
204     {
205         mtime_t i_duration = 0;
206         mtime_t i_now = mdate();
207
208         i_duration = 1000 * private_mediacontrol_unit_convert(
209                                                               self->p_media_player,
210                                                               end->key,
211                                                               mediacontrol_MediaTime,
212                                                               end->value );
213
214         mediacontrol_showtext( p_vout, DEFAULT_CHAN, psz_message, NULL,
215                                OSD_ALIGN_BOTTOM | OSD_ALIGN_LEFT, 0, 0,
216                                i_now, i_now + i_duration );
217     }
218     else
219     {
220         mtime_t i_debut, i_fin, i_now;
221
222         /* FIXME */
223         /* i_now = input_ClockGetTS( p_input, NULL, 0 ); */
224         i_now = mdate();
225
226         i_debut = private_mediacontrol_position2microsecond( self->p_media_player,
227                                             ( mediacontrol_Position* ) begin );
228         i_debut += i_now;
229
230         i_fin = private_mediacontrol_position2microsecond( self->p_media_player,
231                                           ( mediacontrol_Position * ) end );
232         i_fin += i_now;
233
234         vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN, psz_message, NULL,
235                                OSD_ALIGN_BOTTOM | OSD_ALIGN_LEFT, 0, 0,
236                                i_debut, i_fin );
237     }
238
239     vlc_object_release( p_vout );
240 }
241
242 unsigned short
243 mediacontrol_sound_get_volume( mediacontrol_Instance *self,
244                                mediacontrol_Exception *exception )
245 {
246     libvlc_exception_t ex;
247     int i_ret = 0;
248
249     mediacontrol_exception_init( exception );
250     libvlc_exception_init( &ex );
251
252     i_ret = libvlc_audio_get_volume( self->p_instance, &ex );
253     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
254     /* FIXME: Normalize in [0..100] */
255     return (unsigned short)i_ret;
256 }
257
258 void
259 mediacontrol_sound_set_volume( mediacontrol_Instance *self,
260                                const unsigned short volume,
261                                mediacontrol_Exception *exception )
262 {
263     /* FIXME: Normalize in [0..100] */
264     libvlc_exception_t ex;
265
266     mediacontrol_exception_init( exception );
267     libvlc_exception_init( &ex );
268
269     libvlc_audio_set_volume( self->p_instance, volume, &ex );
270     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
271 }
272
273 int mediacontrol_set_visual( mediacontrol_Instance *self,
274                                     WINDOWHANDLE visual_id,
275                                     mediacontrol_Exception *exception )
276 {
277     libvlc_exception_t ex;
278
279     mediacontrol_exception_init( exception );
280     libvlc_exception_init( &ex );
281
282     libvlc_media_player_set_drawable( self->p_media_player, (libvlc_drawable_t)visual_id, &ex );
283     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
284     return true;
285 }
286
287 int
288 mediacontrol_get_rate( mediacontrol_Instance *self,
289                mediacontrol_Exception *exception )
290 {
291     libvlc_exception_t ex;
292     int i_ret;
293
294     mediacontrol_exception_init( exception );
295     libvlc_exception_init( &ex );
296
297     i_ret = libvlc_media_player_get_rate( self->p_media_player, &ex );
298     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
299
300     return i_ret / 10;
301 }
302
303 void
304 mediacontrol_set_rate( mediacontrol_Instance *self,
305                const int rate,
306                mediacontrol_Exception *exception )
307 {
308     libvlc_exception_t ex;
309
310     mediacontrol_exception_init( exception );
311     libvlc_exception_init( &ex );
312
313     libvlc_media_player_set_rate( self->p_media_player, rate * 10, &ex );
314     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
315 }
316
317 int
318 mediacontrol_get_fullscreen( mediacontrol_Instance *self,
319                  mediacontrol_Exception *exception )
320 {
321     libvlc_exception_t ex;
322     int i_ret;
323
324     mediacontrol_exception_init( exception );
325     libvlc_exception_init( &ex );
326
327     i_ret = libvlc_get_fullscreen( self->p_media_player, &ex );
328     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
329
330     return i_ret;
331 }
332
333 void
334 mediacontrol_set_fullscreen( mediacontrol_Instance *self,
335                  const int b_fullscreen,
336                  mediacontrol_Exception *exception )
337 {
338     libvlc_exception_t ex;
339
340     mediacontrol_exception_init( exception );
341     libvlc_exception_init( &ex );
342
343     libvlc_set_fullscreen( self->p_media_player, b_fullscreen, &ex );
344     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
345 }