embedded snapshot: unlock the cache 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     (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:%ju", (uintmax_t)(uintptr_t)p_cache );
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         /* Note: p_snapshot->p_data is directly used, not copied. Thus
104            do not free it here. */
105         p_pic = private_mediacontrol_createRGBPicture( p_snapshot->i_width,
106                                                        p_snapshot->i_height,
107                                                        VLC_FOURCC( 'p','n','g',' ' ),
108                                                        p_snapshot->date,
109                                                        p_snapshot->p_data,
110                                                        p_snapshot->i_datasize );
111         if( !p_pic )
112         {
113             free( p_snapshot );
114             RAISE_NULL( mediacontrol_InternalException, "Out of memory" );
115         }
116     }
117     else
118     {
119         RAISE_NULL( mediacontrol_InternalException, "Snapshot exception" );
120     }
121     return p_pic;
122 }
123
124 static
125 int mediacontrol_showtext( vout_thread_t *p_vout, int i_channel,
126                            char *psz_string, text_style_t *p_style,
127                            int i_flags, int i_hmargin, int i_vmargin,
128                            mtime_t i_start, mtime_t i_stop )
129 {
130     return osd_ShowTextAbsolute( p_vout->p_spu, i_channel,
131                                  psz_string, p_style,
132                                  i_flags, i_hmargin, i_vmargin,
133                                  i_start, i_stop );
134 }
135
136
137 void
138 mediacontrol_display_text( mediacontrol_Instance *self,
139                            const char * message,
140                            const mediacontrol_Position * begin,
141                            const mediacontrol_Position * end,
142                            mediacontrol_Exception *exception )
143 {
144     vout_thread_t *p_vout = NULL;
145     char* psz_message;
146     input_thread_t *p_input;
147     libvlc_exception_t ex;
148
149     libvlc_exception_init( &ex );
150     mediacontrol_exception_init( exception );
151
152     p_input = libvlc_get_input_thread( self->p_media_player, &ex );
153     if( ! p_input )
154     {
155         RAISE_VOID( mediacontrol_InternalException, "No input" );
156     }
157     p_vout = vlc_object_find( p_input, VLC_OBJECT_VOUT, FIND_CHILD );
158     if( ! p_vout )
159     {
160         RAISE_VOID( mediacontrol_InternalException, "No video output" );
161     }
162
163     psz_message = strdup( message );
164     if( !psz_message )
165     {
166         RAISE_VOID( mediacontrol_InternalException, "no more memory" );
167     }
168
169     if( begin->origin == mediacontrol_RelativePosition &&
170         begin->value == 0 &&
171         end->origin == mediacontrol_RelativePosition )
172     {
173         mtime_t i_duration = 0;
174         mtime_t i_now = mdate();
175
176         i_duration = 1000 * private_mediacontrol_unit_convert(
177                                                               self->p_media_player,
178                                                               end->key,
179                                                               mediacontrol_MediaTime,
180                                                               end->value );
181
182         mediacontrol_showtext( p_vout, DEFAULT_CHAN, psz_message, NULL,
183                                OSD_ALIGN_BOTTOM | OSD_ALIGN_LEFT, 0, 0,
184                                i_now, i_now + i_duration );
185     }
186     else
187     {
188         mtime_t i_debut, i_fin, i_now;
189
190         /* FIXME */
191         /* i_now = input_ClockGetTS( p_input, NULL, 0 ); */
192         i_now = mdate();
193
194         i_debut = private_mediacontrol_position2microsecond( self->p_media_player,
195                                             ( mediacontrol_Position* ) begin );
196         i_debut += i_now;
197
198         i_fin = private_mediacontrol_position2microsecond( self->p_media_player,
199                                           ( mediacontrol_Position * ) end );
200         i_fin += i_now;
201
202         vout_ShowTextAbsolute( p_vout, DEFAULT_CHAN, psz_message, NULL,
203                                OSD_ALIGN_BOTTOM | OSD_ALIGN_LEFT, 0, 0,
204                                i_debut, i_fin );
205     }
206
207     vlc_object_release( p_vout );
208 }
209
210 unsigned short
211 mediacontrol_sound_get_volume( mediacontrol_Instance *self,
212                                mediacontrol_Exception *exception )
213 {
214     libvlc_exception_t ex;
215     int i_ret = 0;
216
217     mediacontrol_exception_init( exception );
218     libvlc_exception_init( &ex );
219
220     i_ret = libvlc_audio_get_volume( self->p_instance, &ex );
221     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
222     /* FIXME: Normalize in [0..100] */
223     return (unsigned short)i_ret;
224 }
225
226 void
227 mediacontrol_sound_set_volume( mediacontrol_Instance *self,
228                                const unsigned short volume,
229                                mediacontrol_Exception *exception )
230 {
231     /* FIXME: Normalize in [0..100] */
232     libvlc_exception_t ex;
233
234     mediacontrol_exception_init( exception );
235     libvlc_exception_init( &ex );
236
237     libvlc_audio_set_volume( self->p_instance, volume, &ex );
238     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
239 }
240
241 int mediacontrol_set_visual( mediacontrol_Instance *self,
242                                     WINDOWHANDLE visual_id,
243                                     mediacontrol_Exception *exception )
244 {
245     libvlc_exception_t ex;
246
247     mediacontrol_exception_init( exception );
248     libvlc_exception_init( &ex );
249
250     libvlc_media_player_set_drawable( self->p_media_player, (libvlc_drawable_t)visual_id, &ex );
251     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
252     return true;
253 }
254
255 int
256 mediacontrol_get_rate( mediacontrol_Instance *self,
257                mediacontrol_Exception *exception )
258 {
259     libvlc_exception_t ex;
260     int i_ret;
261
262     mediacontrol_exception_init( exception );
263     libvlc_exception_init( &ex );
264
265     i_ret = libvlc_media_player_get_rate( self->p_media_player, &ex );
266     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
267
268     return i_ret / 10;
269 }
270
271 void
272 mediacontrol_set_rate( mediacontrol_Instance *self,
273                const int rate,
274                mediacontrol_Exception *exception )
275 {
276     libvlc_exception_t ex;
277
278     mediacontrol_exception_init( exception );
279     libvlc_exception_init( &ex );
280
281     libvlc_media_player_set_rate( self->p_media_player, rate * 10, &ex );
282     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
283 }
284
285 int
286 mediacontrol_get_fullscreen( mediacontrol_Instance *self,
287                  mediacontrol_Exception *exception )
288 {
289     libvlc_exception_t ex;
290     int i_ret;
291
292     mediacontrol_exception_init( exception );
293     libvlc_exception_init( &ex );
294
295     i_ret = libvlc_get_fullscreen( self->p_media_player, &ex );
296     HANDLE_LIBVLC_EXCEPTION_ZERO( &ex );
297
298     return i_ret;
299 }
300
301 void
302 mediacontrol_set_fullscreen( mediacontrol_Instance *self,
303                  const int b_fullscreen,
304                  mediacontrol_Exception *exception )
305 {
306     libvlc_exception_t ex;
307
308     mediacontrol_exception_init( exception );
309     libvlc_exception_init( &ex );
310
311     libvlc_set_fullscreen( self->p_media_player, b_fullscreen, &ex );
312     HANDLE_LIBVLC_EXCEPTION_VOID( &ex );
313 }