1 /*****************************************************************************
2 * visual.c : Visualisation system
3 *****************************************************************************
4 * Copyright (C) 2002-2006 the VideoLAN team
7 * Authors: Clément Stenac <zorglub@via.ecp.fr>
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.
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.
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 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
37 /*****************************************************************************
39 *****************************************************************************/
40 #define ELIST_TEXT N_( "Effects list" )
41 #define ELIST_LONGTEXT N_( \
42 "A list of visual effect, separated by commas.\n" \
43 "Current effects include: dummy, scope, spectrum." )
45 #define WIDTH_TEXT N_( "Video width" )
46 #define WIDTH_LONGTEXT N_( \
47 "The width of the effects video window, in pixels." )
49 #define HEIGHT_TEXT N_( "Video height" )
50 #define HEIGHT_LONGTEXT N_( \
51 "The height of the effects video window, in pixels." )
53 #define NBBANDS_TEXT N_( "Number of bands" )
54 #define NBBANDS_LONGTEXT N_( \
55 "Number of bands used by spectrum analyzer, should be 20 or 80." )
56 #define SPNBBANDS_LONGTEXT N_( \
57 "Number of bands used by the spectrometer, from 20 to 80." )
59 #define SEPAR_TEXT N_( "Band separator" )
60 #define SEPAR_LONGTEXT N_( \
61 "Number of blank pixels between bands.")
63 #define AMP_TEXT N_( "Amplification" )
64 #define AMP_LONGTEXT N_( \
65 "This is a coefficient that modifies the height of the bands.")
67 #define PEAKS_TEXT N_( "Enable peaks" )
68 #define PEAKS_LONGTEXT N_( \
69 "Draw \"peaks\" in the spectrum analyzer." )
71 #define ORIG_TEXT N_( "Enable original graphic spectrum" )
72 #define ORIG_LONGTEXT N_( \
73 "Enable the \"flat\" spectrum analyzer in the spectrometer." )
75 #define BANDS_TEXT N_( "Enable bands" )
76 #define BANDS_LONGTEXT N_( \
77 "Draw bands in the spectrometer." )
79 #define BASE_TEXT N_( "Enable base" )
80 #define BASE_LONGTEXT N_( \
81 "Defines whether to draw the base of the bands." )
83 #define RADIUS_TEXT N_( "Base pixel radius" )
84 #define RADIUS_LONGTEXT N_( \
85 "Defines radius size in pixels, of base of bands(beginning)." )
87 #define SSECT_TEXT N_( "Spectral sections" )
88 #define SSECT_LONGTEXT N_( \
89 "Determines how many sections of spectrum will exist." )
91 #define PEAK_HEIGHT_TEXT N_( "Peak height" )
92 #define PEAK_HEIGHT_LONGTEXT N_( \
93 "Total pixel height of the peak items." )
95 #define PEAK_WIDTH_TEXT N_( "Peak extra width" )
96 #define PEAK_WIDTH_LONGTEXT N_( \
97 "Additions or subtractions of pixels on the peak width." )
99 #define COLOR1_TEXT N_( "V-plane color" )
100 #define COLOR1_LONGTEXT N_( \
101 "YUV-Color cube shifting across the V-plane ( 0 - 127 )." )
103 #define STARS_TEXT N_( "Number of stars" )
104 #define STARS_LONGTEXT N_( \
105 "Number of stars to draw with random effect." )
107 static int Open ( vlc_object_t * );
108 static void Close ( vlc_object_t * );
111 set_shortname( _("Visualizer"));
112 set_category( CAT_AUDIO );
113 set_subcategory( SUBCAT_AUDIO_VISUAL );
114 set_description( _("Visualizer filter") );
115 set_section( N_( "General") , NULL );
116 add_string("effect-list", "spectrum", NULL,
117 ELIST_TEXT, ELIST_LONGTEXT, VLC_TRUE );
118 add_integer("effect-width",VOUT_WIDTH,NULL,
119 WIDTH_TEXT, WIDTH_LONGTEXT, VLC_FALSE );
120 add_integer("effect-height" , VOUT_HEIGHT , NULL,
121 HEIGHT_TEXT, HEIGHT_LONGTEXT, VLC_FALSE );
122 set_section( N_("Spectrum analyser") , NULL );
123 add_integer("visual-nbbands", 80, NULL,
124 NBBANDS_TEXT, NBBANDS_LONGTEXT, VLC_TRUE );
125 add_integer("visual-separ", 1, NULL,
126 SEPAR_TEXT, SEPAR_LONGTEXT, VLC_TRUE );
127 add_integer("visual-amp", 3, NULL,
128 AMP_TEXT, AMP_LONGTEXT, VLC_TRUE );
129 add_bool("visual-peaks", VLC_TRUE, NULL,
130 PEAKS_TEXT, PEAKS_LONGTEXT, VLC_TRUE );
131 set_section( N_("Spectrometer") , NULL );
132 add_bool("spect-show-original", VLC_FALSE, NULL,
133 ORIG_TEXT, ORIG_LONGTEXT, VLC_TRUE );
134 add_bool("spect-show-base", VLC_TRUE, NULL,
135 BASE_TEXT, BASE_LONGTEXT, VLC_TRUE );
136 add_integer("spect-radius", 42, NULL,
137 RADIUS_TEXT, RADIUS_LONGTEXT, VLC_TRUE );
138 add_integer("spect-sections", 3, NULL,
139 SSECT_TEXT, SSECT_LONGTEXT, VLC_TRUE );
140 add_integer("spect-color", 80, NULL,
141 COLOR1_TEXT, COLOR1_LONGTEXT, VLC_TRUE );
142 add_bool("spect-show-bands", VLC_TRUE, NULL,
143 BANDS_TEXT, BANDS_LONGTEXT, VLC_TRUE );
144 add_integer("spect-nbbands", 32, NULL,
145 NBBANDS_TEXT, SPNBBANDS_LONGTEXT, VLC_TRUE );
146 add_integer("spect-separ", 1, NULL,
147 SEPAR_TEXT, SEPAR_LONGTEXT, VLC_TRUE );
148 add_integer("spect-amp", 8, NULL,
149 AMP_TEXT, AMP_LONGTEXT, VLC_TRUE );
150 add_bool("spect-show-peaks", VLC_TRUE, NULL,
151 PEAKS_TEXT, PEAKS_LONGTEXT, VLC_TRUE );
152 add_integer("spect-peak-width", 61, NULL,
153 PEAK_WIDTH_TEXT, PEAK_WIDTH_LONGTEXT, VLC_TRUE );
154 add_integer("spect-peak-height", 1, NULL,
155 PEAK_HEIGHT_TEXT, PEAK_HEIGHT_LONGTEXT, VLC_TRUE );
156 set_capability( "visualization", 0 );
157 set_callbacks( Open, Close );
158 add_shortcut( "visualizer");
162 /*****************************************************************************
164 *****************************************************************************/
165 static void DoWork( aout_instance_t *, aout_filter_t *,
166 aout_buffer_t *, aout_buffer_t * );
167 static int FilterCallback( vlc_object_t *, char const *,
168 vlc_value_t, vlc_value_t, void * );
171 const char *psz_name;
172 int (*pf_run)( visual_effect_t *, aout_instance_t *,
173 aout_buffer_t *, picture_t *);
176 { "scope", scope_Run },
177 { "spectrum", spectrum_Run },
178 { "spectrometer", spectrometer_Run },
179 { "dummy", dummy_Run},
183 /*****************************************************************************
184 * Open: open the visualizer
185 *****************************************************************************/
186 static int Open( vlc_object_t *p_this )
188 aout_filter_t *p_filter = (aout_filter_t *)p_this;
189 aout_filter_sys_t *p_sys;
192 char *psz_effects, *psz_parser;
196 if( ( p_filter->input.i_format != VLC_FOURCC('f','l','3','2') &&
197 p_filter->input.i_format != VLC_FOURCC('f','i','3','2') ) )
202 p_sys = p_filter->p_sys = malloc( sizeof( aout_filter_sys_t ) );
205 msg_Err( p_filter, "out of memory" );
209 p_sys->i_height = config_GetInt( p_filter , "effect-height");
210 p_sys->i_width = config_GetInt( p_filter , "effect-width");
212 if( p_sys->i_height < 20 ) p_sys->i_height = 20;
213 if( p_sys->i_width < 20 ) p_sys->i_width = 20;
214 if( (p_sys->i_height % 2 ) != 0 ) p_sys->i_height--;
215 if( (p_sys->i_width % 2 ) != 0 ) p_sys->i_width--;
218 p_sys->effect = NULL;
220 /* Parse the effect list */
221 var_Create( p_filter, "effect-list", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
222 var_Get( p_filter, "effect-list", &val);
223 psz_parser = psz_effects = strdup( val.psz_string );
224 free( val.psz_string );
226 var_AddCallback( p_filter, "effect-list", FilterCallback, NULL );
228 while( psz_parser && *psz_parser != '\0' )
230 visual_effect_t *p_effect;
233 p_effect = malloc( sizeof( visual_effect_t ) );
236 p_effect->i_width = p_sys->i_width;
237 p_effect->i_height= p_sys->i_height;
238 p_effect->i_nb_chans = aout_FormatNbChannels( &p_filter->input);
239 p_effect->psz_args = NULL;
240 p_effect->p_data = NULL;
242 p_effect->pf_run = NULL;
243 p_effect->psz_name = NULL;
245 for( i = 0; pf_effect_run[i].psz_name != NULL; i++ )
247 if( !strncasecmp( psz_parser,
248 pf_effect_run[i].psz_name,
249 strlen( pf_effect_run[i].psz_name ) ) )
251 p_effect->pf_run = pf_effect_run[i].pf_run;
252 p_effect->psz_name = strdup( pf_effect_run[i].psz_name );
257 if( p_effect->psz_name )
259 psz_parser += strlen( p_effect->psz_name );
261 if( *psz_parser == '{' )
267 if( ( psz_eoa = strchr( psz_parser, '}') ) == NULL )
269 msg_Err( p_filter, "unable to parse effect list. Aborting");
273 strndup( psz_parser, psz_eoa - psz_parser);
275 TAB_APPEND( p_sys->i_effect, p_sys->effect, p_effect );
279 msg_Err( p_filter, "unknown visual effect: %s", psz_parser );
283 if( strchr( psz_parser, ',' ) )
285 psz_parser = strchr( psz_parser, ',' ) + 1;
287 else if( strchr( psz_parser, ':' ) )
289 psz_parser = strchr( psz_parser, ':' ) + 1;
302 if( !p_sys->i_effect )
304 msg_Err( p_filter, "no effects found" );
309 /* Open the video output */
310 memset( &fmt, 0, sizeof(video_format_t) );
312 fmt.i_width = fmt.i_visible_width = p_sys->i_width;
313 fmt.i_height = fmt.i_visible_height = p_sys->i_height;
314 fmt.i_chroma = VLC_FOURCC('I','4','2','0');
315 fmt.i_aspect = VOUT_ASPECT_FACTOR * p_sys->i_width/p_sys->i_height;
316 fmt.i_sar_num = fmt.i_sar_den = 1;
318 p_sys->p_vout = vout_Request( p_filter, NULL, &fmt );
319 if( p_sys->p_vout == NULL )
321 msg_Err( p_filter, "no suitable vout module" );
326 p_filter->pf_do_work = DoWork;
327 p_filter->b_in_place= 1;
332 /*****************************************************************************
333 * DoWork: convert a buffer
334 *****************************************************************************
335 * Audio part pasted from trivial.c
336 ****************************************************************************/
337 static void DoWork( aout_instance_t *p_aout, aout_filter_t *p_filter,
338 aout_buffer_t *p_in_buf, aout_buffer_t *p_out_buf )
340 aout_filter_sys_t *p_sys = p_filter->p_sys;
344 p_out_buf->i_nb_samples = p_in_buf->i_nb_samples;
345 p_out_buf->i_nb_bytes = p_in_buf->i_nb_bytes *
346 aout_FormatNbChannels( &p_filter->output ) /
347 aout_FormatNbChannels( &p_filter->input );
349 /* First, get a new picture */
350 while( ( p_outpic = vout_CreatePicture( p_sys->p_vout, 0, 0, 3 ) ) == NULL)
356 msleep( VOUT_OUTMEM_SLEEP );
359 /* Blank the picture */
360 for( i = 0 ; i < p_outpic->i_planes ; i++ )
362 memset( p_outpic->p[i].p_pixels, i > 0 ? 0x80 : 0x00,
363 p_outpic->p[i].i_visible_lines * p_outpic->p[i].i_pitch );
366 /* We can now call our visualization effects */
367 for( i = 0; i < p_sys->i_effect; i++ )
369 #define p_effect p_sys->effect[i]
370 if( p_effect->pf_run )
372 p_effect->pf_run( p_effect, p_aout, p_out_buf, p_outpic );
377 vout_DatePicture( p_sys->p_vout, p_outpic,
378 ( p_in_buf->start_date + p_in_buf->end_date ) / 2 );
380 vout_DisplayPicture( p_sys->p_vout, p_outpic );
383 /*****************************************************************************
384 * Close: close the plugin
385 *****************************************************************************/
386 static void Close( vlc_object_t *p_this )
388 aout_filter_t * p_filter = (aout_filter_t *)p_this;
389 aout_filter_sys_t *p_sys = p_filter->p_sys;
393 if( p_filter->p_sys->p_vout )
395 vout_Request( p_filter, p_filter->p_sys->p_vout, 0 );
399 for( i = 0; i < p_sys->i_effect; i++ )
401 #define p_effect p_sys->effect[i]
402 if( p_effect->psz_name )
404 free( p_effect->psz_name );
406 if( p_effect->psz_args )
408 free( p_effect->psz_args );
416 free( p_sys->effect );
419 free( p_filter->p_sys );
422 /*****************************************************************************
423 * FilterCallback: called when changing the deinterlace method on the fly.
424 *****************************************************************************/
425 static int FilterCallback( vlc_object_t *p_this, char const *psz_cmd,
426 vlc_value_t oldval, vlc_value_t newval,
429 VLC_UNUSED(psz_cmd); VLC_UNUSED(oldval);
430 VLC_UNUSED(p_data); VLC_UNUSED(newval);
431 aout_filter_t *p_filter = (aout_filter_t *)p_this;
432 /* restart this baby */
433 msg_Dbg( p_filter, "we should restart the visual filter" );