mediacontrol: Fix warnings about unused args.
[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     (void)a_position;
59     vlc_object_t* p_cache;
60     vout_thread_t* p_vout;
61     input_thread_t *p_input;
62     mediacontrol_RGBPicture *p_pic = NULL;
63     char path[256];
64     snapshot_t *p_snapshot;
65     libvlc_exception_t ex;
66
67     libvlc_exception_init( &ex );
68     mediacontrol_exception_init( exception );
69
70     p_input = libvlc_get_input_thread( self->p_media_player, &ex );
71     if( ! p_input )
72     {
73         RAISE_NULL( mediacontrol_InternalException, "No input" );
74     }
75     p_vout = vlc_object_find( p_input, VLC_OBJECT_VOUT, FIND_CHILD );
76     if( ! p_vout )
77     {
78         RAISE_NULL( mediacontrol_InternalException, "No video output" );
79     }
80     p_cache = vlc_object_create( p_input, sizeof( vlc_object_t ) );
81     if( p_cache == NULL )
82     {
83         vlc_object_release( p_vout );
84         vlc_object_release( p_input );
85         RAISE_NULL( mediacontrol_InternalException, "Out of memory" );
86     }
87     snprintf( path, 255, "object:%d", p_cache->i_object_id );
88     var_SetString( p_vout, "snapshot-path", path );
89     var_SetString( p_vout, "snapshot-format", "png" );
90
91     vlc_object_lock( p_cache );
92     vout_Control( p_vout, VOUT_SNAPSHOT );
93     vlc_object_wait( p_cache );
94     vlc_object_release( p_vout );
95
96     p_snapshot = ( snapshot_t* ) p_cache->p_private;
97     vlc_object_unlock( p_cache );
98     vlc_object_release( p_cache );
99     vlc_object_release( p_input );
100
101     if( p_snapshot )
102     {
103         p_pic = private_mediacontrol_createRGBPicture( p_snapshot->i_width,
104                                p_snapshot->i_height,
105                                VLC_FOURCC( 'p','n','g',' ' ),
106                                p_snapshot->date,
107                                p_snapshot->p_data,
108                                p_snapshot->i_datasize );
109         if( !p_pic )
110         {
111             free( p_snapshot->p_data );
112             free( p_snapshot );
113             RAISE_NULL( mediacontrol_InternalException, "Out of memory" );
114         }
115     }
116     else
117     {
118         RAISE_NULL( mediacontrol_InternalException, "Snapshot exception" );
119     }
120     return p_pic;
121 }
122
123 static
124 int mediacontrol_showtext( vout_thread_t *p_vout, int i_channel,
125                            char *psz_string, text_style_t *p_style,
126                            int i_flags, int i_hmargin, int i_vmargin,
127                            mtime_t i_start, mtime_t i_stop )
128 {
129     subpicture_t *p_spu;
130     video_format_t fmt;
131
132     if( !psz_string ) return VLC_EGENERIC;
133
134     p_spu = spu_CreateSubpicture( p_vout->p_spu );
135     if( !p_spu ) return VLC_EGENERIC;
136
137     /* Create a new subpicture region */
138     memset( &fmt, 0, sizeof(video_format_t) );
139     fmt.i_chroma = VLC_FOURCC('T','E','X','T');
140     fmt.i_aspect = 0;
141     fmt.i_width = fmt.i_height = 0;
142     fmt.i_x_offset = fmt.i_y_offset = 0;
143     p_spu->p_region = p_spu->pf_create_region( VLC_OBJECT(p_vout), &fmt );
144     if( !p_spu->p_region )
145     {
146         msg_Err( p_vout, "cannot allocate SPU region" );
147         spu_DestroySubpicture( p_vout->p_spu, p_spu );
148         return VLC_EGENERIC;
149     }
150
151     p_spu->p_region->psz_text = strdup( psz_string );
152     p_spu->p_region->i_align = i_flags & SUBPICTURE_ALIGN_MASK;
153     p_spu->p_region->p_style = p_style;
154     p_spu->i_start = i_start;
155     p_spu->i_stop = i_stop;
156     p_spu->b_ephemer = false;
157     p_spu->b_absolute = false;
158
159     p_spu->i_x = i_hmargin;
160     p_spu->i_y = i_vmargin;
161     p_spu->i_flags = i_flags & ~SUBPICTURE_ALIGN_MASK;
162     p_spu->i_channel = i_channel;
163
164     spu_DisplaySubpicture( p_vout->p_spu, p_spu );
165
166     return VLC_SUCCESS;
167 }
168
169
170 void
171 mediacontrol_display_text( mediacontrol_Instance *self,
172                            const char * message,
173                            const mediacontrol_Position * begin,
174                            const mediacontrol_Position * end,
175                            mediacontrol_Exception *exception )
176 {
177     vout_thread_t *p_vout = NULL;
178     char* psz_message;
179     input_thread_t *p_input;
180     libvlc_exception_t ex;
181
182     libvlc_exception_init( &ex );
183     mediacontrol_exception_init( exception );
184
185     p_input = libvlc_get_input_thread( self->p_media_player, &ex );
186     if( ! p_input )
187     {
188         RAISE_VOID( mediacontrol_InternalException, "No input" );
189     }
190     p_vout = vlc_object_find( p_input, VLC_OBJECT_VOUT, FIND_CHILD );
191     if( ! p_vout )
192     {
193         RAISE_VOID( mediacontrol_InternalException, "No video output" );
194     }
195
196     psz_message = strdup( message );
197     if( !psz_message )
198     {
199         RAISE_VOID( mediacontrol_InternalException, "no more memory" );
200     }
201
202     if( begin->origin == mediacontrol_RelativePosition &&
203         begin->value == 0 &&
204         end->origin == mediacontrol_RelativePosition )
205     {
206         mtime_t i_duration = 0;
207         mtime_t i_now = mdate();
208
209         i_duration = 1000 * private_mediacontrol_unit_convert(
210                                                               self->p_media_player,
211                                                               end->key,
212                                                               mediacontrol_MediaTime,
213                                                               end->value );
214
215         mediacontrol_showtext( p_vout, DEFAULT_CHAN, psz_message, NULL,
216                                OSD_ALIGN_BOTTOM | OSD_ALIGN_LEFT, 0, 0,
217                                i_now, i_now + i_duration );
218     }
219     else
220     {
221         mtime_t i_debut, i_fin, i_now;
222
223         /* FIXME */
224         /* i_now = input_ClockGetTS( p_input, NULL, 0 ); */
225         i_now = mdate();
226
227         i_debut = private_mediacontrol_position2microsecond( self->p_media_player,
228                                             ( mediacontrol_Position* ) begin );
229         i_debut += i_now;
230
231         i_fin = private_mediacontrol_position2microsecond( self->p_media_player,
232                                           ( mediacontrol_Position * ) end );
233         i_fin += i_now;
234
235         vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN, psz_message, NULL,
236                                OSD_ALIGN_BOTTOM | OSD_ALIGN_LEFT, 0, 0,
237                                i_debut, i_fin );
238     }
239
240     vlc_object_release( p_vout );
241 }
242
243 unsigned short
244 mediacontrol_sound_get_volume( mediacontrol_Instance *self,
245                                mediacontrol_Exception *exception )
246 {
247     libvlc_exception_t ex;
248     int i_ret = 0;
249
250     mediacontrol_exception_init( exception );
251     libvlc_exception_init( &ex );
252
253     i_ret = libvlc_audio_get_volume( self->p_instance, &ex );
254     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
255     /* FIXME: Normalize in [0..100] */
256     return (unsigned short)i_ret;
257 }
258
259 void
260 mediacontrol_sound_set_volume( mediacontrol_Instance *self,
261                                const unsigned short volume,
262                                mediacontrol_Exception *exception )
263 {
264     /* FIXME: Normalize in [0..100] */
265     libvlc_exception_t ex;
266
267     mediacontrol_exception_init( exception );
268     libvlc_exception_init( &ex );
269
270     libvlc_audio_set_volume( self->p_instance, volume, &ex );
271     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
272 }
273
274 int mediacontrol_set_visual( mediacontrol_Instance *self,
275                                     WINDOWHANDLE visual_id,
276                                     mediacontrol_Exception *exception )
277 {
278     libvlc_exception_t ex;
279
280     mediacontrol_exception_init( exception );
281     libvlc_exception_init( &ex );
282
283     libvlc_media_player_set_drawable( self->p_media_player, (libvlc_drawable_t)visual_id, &ex );
284     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
285     return true;
286 }
287
288 int
289 mediacontrol_get_rate( mediacontrol_Instance *self,
290                mediacontrol_Exception *exception )
291 {
292     libvlc_exception_t ex;
293     int i_ret;
294
295     mediacontrol_exception_init( exception );
296     libvlc_exception_init( &ex );
297
298     i_ret = libvlc_media_player_get_rate( self->p_media_player, &ex );
299     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
300
301     return i_ret / 10;
302 }
303
304 void
305 mediacontrol_set_rate( mediacontrol_Instance *self,
306                const int rate,
307                mediacontrol_Exception *exception )
308 {
309     libvlc_exception_t ex;
310
311     mediacontrol_exception_init( exception );
312     libvlc_exception_init( &ex );
313
314     libvlc_media_player_set_rate( self->p_media_player, rate * 10, &ex );
315     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
316 }
317
318 int
319 mediacontrol_get_fullscreen( mediacontrol_Instance *self,
320                  mediacontrol_Exception *exception )
321 {
322     libvlc_exception_t ex;
323     int i_ret;
324
325     mediacontrol_exception_init( exception );
326     libvlc_exception_init( &ex );
327
328     i_ret = libvlc_get_fullscreen( self->p_media_player, &ex );
329     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
330
331     return i_ret;
332 }
333
334 void
335 mediacontrol_set_fullscreen( mediacontrol_Instance *self,
336                  const int b_fullscreen,
337                  mediacontrol_Exception *exception )
338 {
339     libvlc_exception_t ex;
340
341     mediacontrol_exception_init( exception );
342     libvlc_exception_init( &ex );
343
344     libvlc_set_fullscreen( self->p_media_player, b_fullscreen, &ex );
345     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
346 }