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[vlc] / modules / visualization / goom.c
1 /*****************************************************************************
2  * goom.c: based on libgoom (see http://ios.free.fr/?page=projet&quoi=1)
3  *****************************************************************************
4  * Copyright (C) 2003 the VideoLAN team
5  * $Id$
6  *
7  * Authors: Laurent Aimar <fenrir@via.ecp.fr>
8  *          Gildas Bazin <gbazin@videolan.org>
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 /*****************************************************************************
26  * Preamble
27  *****************************************************************************/
28 #include <stdlib.h>                                      /* malloc(), free() */
29 #include <string.h>                                              /* strdup() */
30 #include <errno.h>
31
32 #include <vlc/vlc.h>
33 #include <vlc_aout.h>
34 #include <vlc_vout.h>
35 #include <vlc_block.h>
36 #include <vlc_input.h>
37
38 #ifdef USE_GOOM_TREE
39 #   ifdef OLD_GOOM
40 #       include "goom_core.h"
41 #       define PluginInfo void
42 #       define goom_update(a,b,c,d,e,f) goom_update(b,c,d,e,f)
43 #       define goom_close(a) goom_close()
44 #       define goom_init(a,b) NULL; goom_init(a,b,0); goom_set_font(0,0,0)
45 #   else
46 #       include "goom.h"
47 #   endif
48 #else
49 #   include <goom/goom.h>
50 #endif
51
52 /*****************************************************************************
53  * Module descriptor
54  *****************************************************************************/
55 static int  Open         ( vlc_object_t * );
56 static void Close        ( vlc_object_t * );
57
58 #define WIDTH_TEXT N_("Goom display width")
59 #define HEIGHT_TEXT N_("Goom display height")
60 #define RES_LONGTEXT N_("This allows you to set the resolution of the " \
61   "Goom display (bigger resolution will be prettier but more CPU intensive).")
62
63 #define SPEED_TEXT N_("Goom animation speed")
64 #define SPEED_LONGTEXT N_("This allows you to set the animation speed " \
65   "(between 1 and 10, defaults to 6).")
66
67 #define MAX_SPEED 10
68
69 vlc_module_begin();
70     set_shortname( _("Goom"));
71     set_description( _("Goom effect") );
72     set_category( CAT_AUDIO );
73     set_subcategory( SUBCAT_AUDIO_VISUAL );
74     set_capability( "visualization", 0 );
75     add_integer( "goom-width", 320, NULL,
76                  WIDTH_TEXT, RES_LONGTEXT, VLC_FALSE );
77     add_integer( "goom-height", 240, NULL,
78                  HEIGHT_TEXT, RES_LONGTEXT, VLC_FALSE );
79     add_integer( "goom-speed", 6, NULL,
80                  SPEED_TEXT, SPEED_LONGTEXT, VLC_FALSE );
81     set_callbacks( Open, Close );
82     add_shortcut( "goom" );
83 vlc_module_end();
84
85 /*****************************************************************************
86  * Local prototypes
87  *****************************************************************************/
88 #define MAX_BLOCKS 100
89 #define GOOM_DELAY 400000
90
91 typedef struct
92 {
93     VLC_COMMON_MEMBERS
94     vout_thread_t *p_vout;
95
96     char          *psz_title;
97
98     vlc_mutex_t   lock;
99     vlc_cond_t    wait;
100
101     /* Audio properties */
102     int i_channels;
103
104     /* Audio samples queue */
105     block_t       *pp_blocks[MAX_BLOCKS];
106     int           i_blocks;
107
108     audio_date_t  date;
109
110 } goom_thread_t;
111
112 typedef struct aout_filter_sys_t
113 {
114     goom_thread_t *p_thread;
115
116 } aout_filter_sys_t;
117
118 static void DoWork   ( aout_instance_t *, aout_filter_t *, aout_buffer_t *,
119                        aout_buffer_t * );
120
121 static void Thread   ( vlc_object_t * );
122
123 static char *TitleGet( vlc_object_t * );
124
125 /*****************************************************************************
126  * Open: open a scope effect plugin
127  *****************************************************************************/
128 static int Open( vlc_object_t *p_this )
129 {
130     aout_filter_t     *p_filter = (aout_filter_t *)p_this;
131     aout_filter_sys_t *p_sys;
132     goom_thread_t     *p_thread;
133     vlc_value_t       width, height;
134     video_format_t    fmt;
135
136
137     if ( p_filter->input.i_format != VLC_FOURCC('f','l','3','2' )
138          || p_filter->output.i_format != VLC_FOURCC('f','l','3','2') )
139     {
140         msg_Warn( p_filter, "bad input or output format" );
141         return VLC_EGENERIC;
142     }
143     if ( !AOUT_FMTS_SIMILAR( &p_filter->input, &p_filter->output ) )
144     {
145         msg_Warn( p_filter, "input and output formats are not similar" );
146         return VLC_EGENERIC;
147     }
148
149     p_filter->pf_do_work = DoWork;
150     p_filter->b_in_place = 1;
151
152     /* Allocate structure */
153     p_sys = p_filter->p_sys = malloc( sizeof( aout_filter_sys_t ) );
154
155     /* Create goom thread */
156     p_sys->p_thread = p_thread =
157         vlc_object_create( p_filter, sizeof( goom_thread_t ) );
158     vlc_object_attach( p_thread, p_this );
159
160     var_Create( p_thread, "goom-width", VLC_VAR_INTEGER|VLC_VAR_DOINHERIT );
161     var_Get( p_thread, "goom-width", &width );
162     var_Create( p_thread, "goom-height", VLC_VAR_INTEGER|VLC_VAR_DOINHERIT );
163     var_Get( p_thread, "goom-height", &height );
164
165     memset( &fmt, 0, sizeof(video_format_t) );
166
167     fmt.i_width = fmt.i_visible_width = width.i_int;
168     fmt.i_height = fmt.i_visible_height = height.i_int;
169     fmt.i_chroma = VLC_FOURCC('R','V','3','2');
170     fmt.i_aspect = VOUT_ASPECT_FACTOR * width.i_int/height.i_int;
171     fmt.i_sar_num = fmt.i_sar_den = 1;
172
173     p_thread->p_vout = vout_Request( p_filter, NULL, &fmt );
174     if( p_thread->p_vout == NULL )
175     {
176         msg_Err( p_filter, "no suitable vout module" );
177         vlc_object_detach( p_thread );
178         vlc_object_destroy( p_thread );
179         free( p_sys );
180         return VLC_EGENERIC;
181     }
182     vlc_mutex_init( p_filter, &p_thread->lock );
183     vlc_cond_init( p_filter, &p_thread->wait );
184
185     p_thread->i_blocks = 0;
186     aout_DateInit( &p_thread->date, p_filter->output.i_rate );
187     aout_DateSet( &p_thread->date, 0 );
188     p_thread->i_channels = aout_FormatNbChannels( &p_filter->input );
189
190     p_thread->psz_title = TitleGet( VLC_OBJECT( p_filter ) );
191
192     if( vlc_thread_create( p_thread, "Goom Update Thread", Thread,
193                            VLC_THREAD_PRIORITY_LOW, VLC_FALSE ) )
194     {
195         msg_Err( p_filter, "cannot lauch goom thread" );
196         vout_Destroy( p_thread->p_vout );
197         vlc_mutex_destroy( &p_thread->lock );
198         vlc_cond_destroy( &p_thread->wait );
199         if( p_thread->psz_title ) free( p_thread->psz_title );
200         vlc_object_detach( p_thread );
201         vlc_object_destroy( p_thread );
202         free( p_sys );
203         return VLC_EGENERIC;
204     }
205
206     return VLC_SUCCESS;
207 }
208
209 /*****************************************************************************
210  * DoWork: process samples buffer
211  *****************************************************************************
212  * This function queues the audio buffer to be processed by the goom thread
213  *****************************************************************************/
214 static void DoWork( aout_instance_t * p_aout, aout_filter_t * p_filter,
215                     aout_buffer_t * p_in_buf, aout_buffer_t * p_out_buf )
216 {
217     aout_filter_sys_t *p_sys = p_filter->p_sys;
218     block_t *p_block;
219
220     p_out_buf->i_nb_samples = p_in_buf->i_nb_samples;
221     p_out_buf->i_nb_bytes = p_in_buf->i_nb_bytes;
222
223     /* Queue sample */
224     vlc_mutex_lock( &p_sys->p_thread->lock );
225     if( p_sys->p_thread->i_blocks == MAX_BLOCKS )
226     {
227         vlc_mutex_unlock( &p_sys->p_thread->lock );
228         return;
229     }
230
231     p_block = block_New( p_sys->p_thread, p_in_buf->i_nb_bytes );
232     if( !p_block ) return;
233     memcpy( p_block->p_buffer, p_in_buf->p_buffer, p_in_buf->i_nb_bytes );
234     p_block->i_pts = p_in_buf->start_date;
235
236     p_sys->p_thread->pp_blocks[p_sys->p_thread->i_blocks++] = p_block;
237
238     vlc_cond_signal( &p_sys->p_thread->wait );
239     vlc_mutex_unlock( &p_sys->p_thread->lock );
240 }
241
242 /*****************************************************************************
243  * float to s16 conversion
244  *****************************************************************************/
245 static inline int16_t FloatToInt16( float f )
246 {
247     if( f >= 1.0 )
248         return 32767;
249     else if( f < -1.0 )
250         return -32768;
251     else
252         return (int16_t)( f * 32768.0 );
253 }
254
255 /*****************************************************************************
256  * Fill buffer
257  *****************************************************************************/
258 static int FillBuffer( int16_t *p_data, int *pi_data,
259                        audio_date_t *pi_date, audio_date_t *pi_date_end,
260                        goom_thread_t *p_this )
261 {
262     int i_samples = 0;
263     block_t *p_block;
264
265     while( *pi_data < 512 )
266     {
267         if( !p_this->i_blocks ) return VLC_EGENERIC;
268
269         p_block = p_this->pp_blocks[0];
270         i_samples = __MIN( 512 - *pi_data, p_block->i_buffer /
271                            sizeof(float) / p_this->i_channels );
272
273         /* Date management */
274         if( p_block->i_pts > 0 &&
275             p_block->i_pts != aout_DateGet( pi_date_end ) )
276         {
277            aout_DateSet( pi_date_end, p_block->i_pts );
278         }
279         p_block->i_pts = 0;
280
281         aout_DateIncrement( pi_date_end, i_samples );
282
283         while( i_samples > 0 )
284         {
285             float *p_float = (float *)p_block->p_buffer;
286
287             p_data[*pi_data] = FloatToInt16( p_float[0] );
288             if( p_this->i_channels > 1 )
289                 p_data[512 + *pi_data] = FloatToInt16( p_float[1] );
290
291             (*pi_data)++;
292             p_block->p_buffer += (sizeof(float) * p_this->i_channels);
293             p_block->i_buffer -= (sizeof(float) * p_this->i_channels);
294             i_samples--;
295         }
296
297         if( !p_block->i_buffer )
298         {
299             block_Release( p_block );
300             p_this->i_blocks--;
301             if( p_this->i_blocks )
302                 memmove( p_this->pp_blocks, p_this->pp_blocks + 1,
303                          p_this->i_blocks * sizeof(block_t *) );
304         }
305     }
306
307     *pi_date = *pi_date_end;
308     *pi_data = 0;
309     return VLC_SUCCESS;
310 }
311
312 /*****************************************************************************
313  * Thread:
314  *****************************************************************************/
315 static void Thread( vlc_object_t *p_this )
316 {
317     goom_thread_t *p_thread = (goom_thread_t*)p_this;
318     vlc_value_t width, height, speed;
319     audio_date_t i_pts;
320     int16_t p_data[2][512];
321     int i_data = 0, i_count = 0;
322     PluginInfo *p_plugin_info;
323
324     var_Get( p_this, "goom-width", &width );
325     var_Get( p_this, "goom-height", &height );
326
327     var_Create( p_thread, "goom-speed", VLC_VAR_INTEGER|VLC_VAR_DOINHERIT );
328     var_Get( p_thread, "goom-speed", &speed );
329     speed.i_int = MAX_SPEED - speed.i_int;
330     if( speed.i_int < 0 ) speed.i_int = 0;
331
332     p_plugin_info = goom_init( width.i_int, height.i_int );
333
334     while( !p_thread->b_die )
335     {
336         uint32_t  *plane;
337         picture_t *p_pic;
338
339         /* goom_update is damn slow, so just copy data and release the lock */
340         vlc_mutex_lock( &p_thread->lock );
341         if( FillBuffer( (int16_t *)p_data, &i_data, &i_pts,
342                         &p_thread->date, p_thread ) != VLC_SUCCESS )
343             vlc_cond_wait( &p_thread->wait, &p_thread->lock );
344         vlc_mutex_unlock( &p_thread->lock );
345
346         /* Speed selection */
347         if( speed.i_int && (++i_count % (speed.i_int+1)) ) continue;
348
349         /* Frame dropping if necessary */
350         if( aout_DateGet( &i_pts ) + GOOM_DELAY <= mdate() ) continue;
351
352         plane = goom_update( p_plugin_info, p_data, 0, 0.0,
353                              p_thread->psz_title, NULL );
354
355         if( p_thread->psz_title )
356         {
357             free( p_thread->psz_title );
358             p_thread->psz_title = NULL;
359         }
360
361         while( !( p_pic = vout_CreatePicture( p_thread->p_vout, 0, 0, 0 ) ) &&
362                !p_thread->b_die )
363         {
364             msleep( VOUT_OUTMEM_SLEEP );
365         }
366
367         if( p_pic == NULL ) break;
368
369         memcpy( p_pic->p[0].p_pixels, plane, width.i_int * height.i_int * 4 );
370         vout_DatePicture( p_thread->p_vout, p_pic,
371                           aout_DateGet( &i_pts ) + GOOM_DELAY );
372         vout_DisplayPicture( p_thread->p_vout, p_pic );
373     }
374
375     goom_close( p_plugin_info );
376 }
377
378 /*****************************************************************************
379  * Close: close the plugin
380  *****************************************************************************/
381 static void Close( vlc_object_t *p_this )
382 {
383     aout_filter_t     *p_filter = (aout_filter_t *)p_this;
384     aout_filter_sys_t *p_sys = p_filter->p_sys;
385
386     /* Stop Goom Thread */
387     vlc_object_kill( p_sys->p_thread );
388
389     vlc_mutex_lock( &p_sys->p_thread->lock );
390     vlc_cond_signal( &p_sys->p_thread->wait );
391     vlc_mutex_unlock( &p_sys->p_thread->lock );
392
393     vlc_thread_join( p_sys->p_thread );
394
395     /* Free data */
396     vout_Request( p_filter, p_sys->p_thread->p_vout, 0 );
397     vlc_mutex_destroy( &p_sys->p_thread->lock );
398     vlc_cond_destroy( &p_sys->p_thread->wait );
399     vlc_object_detach( p_sys->p_thread );
400
401     while( p_sys->p_thread->i_blocks-- )
402     {
403         block_Release( p_sys->p_thread->pp_blocks[p_sys->p_thread->i_blocks] );
404     }
405
406     vlc_object_destroy( p_sys->p_thread );
407
408     free( p_sys );
409 }
410
411 static char *TitleGet( vlc_object_t *p_this )
412 {
413     char *psz_title = NULL;
414     input_thread_t *p_input =
415         vlc_object_find( p_this, VLC_OBJECT_INPUT, FIND_ANYWHERE );
416
417     if( p_input )
418     {
419         if( !EMPTY_STR( input_item_GetTitle( input_GetItem(p_input) ) ) )
420         {
421             psz_title = strdup( input_item_GetTitle( input_GetItem(p_input) ) );
422         }
423         else
424         {
425             char *psz = strrchr( input_GetItem(p_input)->psz_uri, '/' );
426
427             if( psz )
428             {
429                 psz++;
430             }
431             else
432             {
433                 psz = input_GetItem(p_input)->psz_uri;
434             }
435             if( psz && *psz )
436             {
437                 psz_title = strdup( psz );
438             }
439         }
440         vlc_object_release( p_input );
441     }
442
443     return psz_title;
444 }