1 /*****************************************************************************
2 * visual.c : Visualisation system
3 *****************************************************************************
4 * Copyright (C) 2002 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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
27 #include <stdlib.h> /* malloc(), free() */
30 #include "audio_output.h"
31 #include "aout_internal.h"
35 /*****************************************************************************
37 *****************************************************************************/
38 #define ELIST_TEXT N_( "Effects list" )
39 #define ELIST_LONGTEXT N_( \
40 "A list of visual effect, separated by commas.\n" \
41 "Current effects include: dummy, scope, spectrum" )
43 #define WIDTH_TEXT N_( "Video width" )
44 #define WIDTH_LONGTEXT N_( \
45 "The width of the effects video window, in pixels." )
47 #define HEIGHT_TEXT N_( "Video height" )
48 #define HEIGHT_LONGTEXT N_( \
49 "The height of the effects video window, in pixels." )
51 #define NBBANDS_TEXT N_( "Number of bands" )
52 #define NBBANDS_LONGTEXT N_( \
53 "Number of bands used by spectrum analyzer, should be 20 or 80." )
55 #define SEPAR_TEXT N_( "Band separator" )
56 #define SEPAR_LONGTEXT N_( \
57 "Number of blank pixels between bands.")
59 #define AMP_TEXT N_( "Amplification" )
60 #define AMP_LONGTEXT N_( \
61 "This is a coefficient that modifies the height of the bands.")
63 #define PEAKS_TEXT N_( "Enable peaks" )
64 #define PEAKS_LONGTEXT N_( \
65 "Defines whether to draw peaks." )
67 #define ORIG_TEXT N_( "Enable original graphic spectrum" )
68 #define ORIG_LONGTEXT N_( \
69 "Defines whether to draw the original spectrum graphic routine." )
71 #define BANDS_TEXT N_( "Enable bands" )
72 #define BANDS_LONGTEXT N_( \
73 "Defines whether to draw the bands." )
75 #define BASE_TEXT N_( "Enable base" )
76 #define BASE_LONGTEXT N_( \
77 "Defines whether to draw the base of the bands." )
79 #define RADIUS_TEXT N_( "Base pixel radius" )
80 #define RADIUS_LONGTEXT N_( \
81 "Defines radius size in pixels, of base of bands(beginning)." )
83 #define SECT_TEXT N_( "Spectral sections" )
84 #define SECT_LONGTEXT N_( \
85 "Determines how many sections of spectrum will exist." )
87 #define PEAK_HEIGHT_TEXT N_( "Peak height" )
88 #define PEAK_HEIGHT_LONGTEXT N_( \
89 "This is the total pixel height of the peak items." )
91 #define PEAK_WIDTH_TEXT N_( "Peak extra width" )
92 #define PEAK_WIDTH_LONGTEXT N_( \
93 "Additions or subtractions of pixels on the peak width." )
95 #define COLOR1_TEXT N_( "V-plane color" )
96 #define COLOR1_LONGTEXT N_( \
97 "YUV-Color cube shifting across the V-plane ( 0 - 127 )." )
99 #define STARS_TEXT N_( "Number of stars" )
100 #define STARS_LONGTEXT N_( \
101 "Defines the number of stars to draw with random effect." )
103 static int Open ( vlc_object_t * );
104 static void Close ( vlc_object_t * );
107 set_shortname( _("Visualizer"));
108 set_category( CAT_AUDIO );
109 set_subcategory( SUBCAT_AUDIO_VISUAL );
110 set_description( _("Visualizer filter") );
111 set_section( N_( "General") , NULL );
112 add_string("effect-list", "spectrum", NULL,
113 ELIST_TEXT, ELIST_LONGTEXT, VLC_TRUE );
114 add_integer("effect-width",VOUT_WIDTH,NULL,
115 WIDTH_TEXT, WIDTH_LONGTEXT, VLC_FALSE );
116 add_integer("effect-height" , VOUT_HEIGHT , NULL,
117 HEIGHT_TEXT, HEIGHT_LONGTEXT, VLC_FALSE );
118 set_section( N_("Spectrum analyser") , NULL );
119 add_integer("visual-nbbands", 80, NULL,
120 NBBANDS_TEXT, NBBANDS_LONGTEXT, VLC_TRUE );
121 add_integer("visual-separ", 1, NULL,
122 SEPAR_TEXT, SEPAR_LONGTEXT, VLC_TRUE );
123 add_integer("visual-amp", 3, NULL,
124 AMP_TEXT, AMP_LONGTEXT, VLC_TRUE );
125 add_bool("visual-peaks", VLC_TRUE, NULL,
126 PEAKS_TEXT, PEAKS_LONGTEXT, VLC_TRUE );
127 set_section( N_("Spectrometer") , NULL );
128 add_bool("spect-show-original", VLC_TRUE, NULL,
129 ORIG_TEXT, ORIG_LONGTEXT, VLC_TRUE );
130 add_bool("spect-show-base", VLC_TRUE, NULL,
131 BASE_TEXT, BASE_LONGTEXT, VLC_TRUE );
132 add_integer("spect-radius", 22, NULL,
133 RADIUS_TEXT, RADIUS_LONGTEXT, VLC_TRUE );
134 add_integer("spect-sections", 2, NULL,
135 SECT_TEXT, SECT_LONGTEXT, VLC_TRUE );
136 add_integer("spect-color", 16, NULL,
137 COLOR1_TEXT, COLOR1_LONGTEXT, VLC_TRUE );
138 add_bool("spect-show-bands", VLC_TRUE, NULL,
139 BANDS_TEXT, BANDS_LONGTEXT, VLC_TRUE );
140 add_integer("spect-nbbands", 80, NULL,
141 NBBANDS_TEXT, NBBANDS_LONGTEXT, VLC_TRUE );
142 add_integer("spect-separ", 1, NULL,
143 SEPAR_TEXT, SEPAR_LONGTEXT, VLC_TRUE );
144 add_integer("spect-amp", 3, NULL,
145 AMP_TEXT, AMP_LONGTEXT, VLC_TRUE );
146 add_bool("spect-show-peaks", VLC_TRUE, NULL,
147 PEAKS_TEXT, PEAKS_LONGTEXT, VLC_TRUE );
148 add_integer("spect-peak-width", 1, NULL,
149 PEAK_WIDTH_TEXT, PEAK_WIDTH_LONGTEXT, VLC_TRUE );
150 add_integer("spect-peak-height", 1, NULL,
151 PEAK_HEIGHT_TEXT, PEAK_HEIGHT_LONGTEXT, VLC_TRUE );
152 set_capability( "visualization", 0 );
153 set_callbacks( Open, Close );
154 add_shortcut( "visualizer");
158 /*****************************************************************************
160 *****************************************************************************/
161 static void DoWork( aout_instance_t *, aout_filter_t *,
162 aout_buffer_t *, aout_buffer_t * );
163 static int FilterCallback( vlc_object_t *, char const *,
164 vlc_value_t, vlc_value_t, void * );
168 int (*pf_run)( visual_effect_t *, aout_instance_t *,
169 aout_buffer_t *, picture_t *);
172 { "scope", scope_Run },
173 { "spectrum", spectrum_Run },
174 { "spectrometer", spectrometer_Run },
175 { "dummy", dummy_Run},
179 /*****************************************************************************
180 * Open: open the visualizer
181 *****************************************************************************/
182 static int Open( vlc_object_t *p_this )
184 aout_filter_t *p_filter = (aout_filter_t *)p_this;
185 aout_filter_sys_t *p_sys;
188 char *psz_effects, *psz_parser;
189 video_format_t fmt = {0};
191 if( ( p_filter->input.i_format != VLC_FOURCC('f','l','3','2') &&
192 p_filter->input.i_format != VLC_FOURCC('f','i','3','2') ) )
197 p_sys = p_filter->p_sys = malloc( sizeof( aout_filter_sys_t ) );
200 msg_Err( p_filter, "out of memory" );
204 p_sys->i_height = config_GetInt( p_filter , "effect-height");
205 p_sys->i_width = config_GetInt( p_filter , "effect-width");
207 if( p_sys->i_height < 20 ) p_sys->i_height = 20;
208 if( p_sys->i_width < 20 ) p_sys->i_width = 20;
209 if( (p_sys->i_height % 2 ) != 0 ) p_sys->i_height--;
210 if( (p_sys->i_width % 2 ) != 0 ) p_sys->i_width--;
213 p_sys->effect = NULL;
215 /* Parse the effect list */
216 var_Create( p_filter, "effect-list", VLC_VAR_STRING | VLC_VAR_DOINHERIT );
217 var_Get( p_filter, "effect-list", &val);
218 psz_parser = psz_effects = strdup( val.psz_string );
219 free( val.psz_string );
221 var_AddCallback( p_filter, "effect-list", FilterCallback, NULL );
223 while( psz_parser && *psz_parser != '\0' )
225 visual_effect_t *p_effect;
228 p_effect = malloc( sizeof( visual_effect_t ) );
229 p_effect->i_width = p_sys->i_width;
230 p_effect->i_height= p_sys->i_height;
231 p_effect->i_nb_chans = aout_FormatNbChannels( &p_filter->input);
232 p_effect->psz_args = NULL;
233 p_effect->p_data = NULL;
235 p_effect->pf_run = NULL;
236 p_effect->psz_name = NULL;
238 for( i = 0; pf_effect_run[i].psz_name != NULL; i++ )
240 if( !strncasecmp( psz_parser,
241 pf_effect_run[i].psz_name,
242 strlen( pf_effect_run[i].psz_name ) ) )
244 p_effect->pf_run = pf_effect_run[i].pf_run;
245 p_effect->psz_name = strdup( pf_effect_run[i].psz_name );
250 if( p_effect->psz_name )
252 psz_parser += strlen( p_effect->psz_name );
254 if( *psz_parser == '{' )
260 if( ( psz_eoa = strchr( psz_parser, '}') ) == NULL )
262 msg_Err( p_filter, "Unable to parse effect list. Aborting");
266 strndup( psz_parser, psz_eoa - psz_parser);
268 TAB_APPEND( p_sys->i_effect, p_sys->effect, p_effect );
272 msg_Err( p_filter, "unknown visual effect: %s", psz_parser );
276 if( strchr( psz_parser, ',' ) )
278 psz_parser = strchr( psz_parser, ',' ) + 1;
280 else if( strchr( psz_parser, ':' ) )
282 psz_parser = strchr( psz_parser, ':' ) + 1;
295 if( !p_sys->i_effect )
297 msg_Err( p_filter, "no effects found" );
302 /* Open the video output */
303 fmt.i_width = fmt.i_visible_width = p_sys->i_width;
304 fmt.i_height = fmt.i_visible_height = p_sys->i_height;
305 fmt.i_chroma = VLC_FOURCC('I','4','2','0');
306 fmt.i_aspect = VOUT_ASPECT_FACTOR * p_sys->i_width/p_sys->i_height;
307 fmt.i_sar_num = fmt.i_sar_den = 1;
309 p_sys->p_vout = vout_Request( p_filter, NULL, &fmt );
310 if( p_sys->p_vout == NULL )
312 msg_Err( p_filter, "no suitable vout module" );
317 p_filter->pf_do_work = DoWork;
318 p_filter->b_in_place= 1;
320 msg_Dbg( p_filter,"Visualizer initialized");
324 /*****************************************************************************
325 * DoWork: convert a buffer
326 *****************************************************************************
327 * Audio part pasted from trivial.c
328 ****************************************************************************/
329 static void DoWork( aout_instance_t *p_aout, aout_filter_t *p_filter,
330 aout_buffer_t *p_in_buf, aout_buffer_t *p_out_buf )
332 aout_filter_sys_t *p_sys = p_filter->p_sys;
336 p_out_buf->i_nb_samples = p_in_buf->i_nb_samples;
337 p_out_buf->i_nb_bytes = p_in_buf->i_nb_bytes *
338 aout_FormatNbChannels( &p_filter->output ) /
339 aout_FormatNbChannels( &p_filter->input );
341 /* First, get a new picture */
342 while( ( p_outpic = vout_CreatePicture( p_sys->p_vout, 0, 0, 3 ) ) == NULL)
348 msleep( VOUT_OUTMEM_SLEEP );
351 /* Blank the picture */
352 for( i = 0 ; i < p_outpic->i_planes ; i++ )
354 memset( p_outpic->p[i].p_pixels, i > 0 ? 0x80 : 0x00,
355 p_outpic->p[i].i_visible_lines * p_outpic->p[i].i_pitch );
358 /* We can now call our visualization effects */
359 for( i = 0; i < p_sys->i_effect; i++ )
361 #define p_effect p_sys->effect[i]
362 if( p_effect->pf_run )
364 p_effect->pf_run( p_effect, p_aout, p_out_buf, p_outpic );
369 vout_DatePicture( p_sys->p_vout, p_outpic,
370 ( p_in_buf->start_date + p_in_buf->end_date ) / 2 );
372 vout_DisplayPicture( p_sys->p_vout, p_outpic );
375 /*****************************************************************************
376 * Close: close the plugin
377 *****************************************************************************/
378 static void Close( vlc_object_t *p_this )
380 aout_filter_t * p_filter = (aout_filter_t *)p_this;
381 aout_filter_sys_t *p_sys = p_filter->p_sys;
385 if( p_filter->p_sys->p_vout )
387 vout_Request( p_filter, p_filter->p_sys->p_vout, 0 );
391 for( i = 0; i < p_sys->i_effect; i++ )
393 #define p_effect p_sys->effect[i]
394 if( p_effect->psz_name )
396 free( p_effect->psz_name );
398 if( p_effect->psz_args )
400 free( p_effect->psz_args );
408 free( p_sys->effect );
411 free( p_filter->p_sys );
414 /*****************************************************************************
415 * FilterCallback: called when changing the deinterlace method on the fly.
416 *****************************************************************************/
417 static int FilterCallback( vlc_object_t *p_this, char const *psz_cmd,
418 vlc_value_t oldval, vlc_value_t newval,
421 aout_filter_t *p_filter = (aout_filter_t *)p_this;
422 /* restart this baby */
423 msg_Dbg( p_filter, "We should restart the visual filter" );