1 /*****************************************************************************
2 * effects.c : Effects for the visualization system
3 *****************************************************************************
4 * Copyright (C) 2002-2009 the VideoLAN team
7 * Authors: Clément Stenac <zorglub@via.ecp.fr>
8 * Adrien Maglo <magsoft@videolan.org>
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.
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.
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 *****************************************************************************/
25 /*****************************************************************************
27 *****************************************************************************/
32 #include <vlc_common.h>
42 #define BAR_DECREASE_SPEED 5
44 #define GRAD_ANGLE_MIN 0.2
45 #define GRAD_ANGLE_MAX 0.5
46 #define GRAD_INCR 0.01
48 /*****************************************************************************
50 *****************************************************************************/
51 int dummy_Run( visual_effect_t * p_effect, aout_instance_t *p_aout,
52 aout_buffer_t * p_buffer , picture_t * p_picture)
54 VLC_UNUSED(p_effect); VLC_UNUSED(p_aout); VLC_UNUSED(p_buffer);
55 VLC_UNUSED(p_picture);
59 /*****************************************************************************
60 * spectrum_Run: spectrum analyser
61 *****************************************************************************/
62 int spectrum_Run(visual_effect_t * p_effect, aout_instance_t *p_aout,
63 aout_buffer_t * p_buffer , picture_t * p_picture)
65 spectrum_data *p_data = p_effect->p_data;
66 float p_output[FFT_BUFFER_SIZE]; /* Raw FFT Result */
67 int *height; /* Bar heights */
68 int *peaks; /* Peaks */
69 int *prev_heights; /* Previous bar heights */
70 int i_80_bands; /* number of bands : 80 if true else 20 */
71 int i_nb_bands; /* number of bands : 80 or 20 */
72 int i_band_width; /* width of bands */
73 int i_start; /* first band horizontal position */
74 int i_peak; /* Should we draw peaks ? */
76 /* Horizontal scale for 20-band equalizer */
77 const int xscale1[]={0,1,2,3,4,5,6,7,8,11,15,20,27,
78 36,47,62,82,107,141,184,255};
80 /* Horizontal scale for 80-band equalizer */
82 {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,
83 19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,
84 35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,
85 52,53,54,55,56,57,58,59,61,63,67,72,77,82,87,93,99,105,
86 110,115,121,130,141,152,163,174,185,200,255};
89 fft_state *p_state; /* internal FFT data */
93 int16_t p_dest[FFT_BUFFER_SIZE]; /* Adapted FFT result */
94 int16_t p_buffer1[FFT_BUFFER_SIZE]; /* Buffer on which we perform
95 the FFT (first channel) */
97 float *p_buffl = /* Original buffer */
98 (float*)p_buffer->p_buffer;
100 int16_t *p_buffs; /* int16_t converted buffer */
101 int16_t *p_s16_buff; /* int16_t converted buffer */
104 p_buffer->i_nb_samples * p_effect->i_nb_chans * sizeof(int16_t));
109 p_buffs = p_s16_buff;
110 i_80_bands = config_GetInt ( p_aout, "visual-80-bands" );
111 i_peak = config_GetInt ( p_aout, "visual-peaks" );
126 p_effect->p_data = p_data = malloc( sizeof( spectrum_data ) );
133 p_data->peaks = calloc( 80, sizeof(int) );
134 p_data->prev_heights = calloc( 80, sizeof(int) );
136 peaks = ( int * )p_data->peaks;
137 prev_heights = ( int * )p_data->prev_heights;
141 peaks = (int *)p_data->peaks;
142 prev_heights = (int *)p_data->prev_heights;
146 height = malloc( i_nb_bands * sizeof(int) );
152 /* Convert the buffer to int16_t */
153 /* Pasted from float32tos16.c */
154 for (i = p_buffer->i_nb_samples * p_effect->i_nb_chans; i--; )
156 union { float f; int32_t i; } u;
157 u.f = *p_buffl + 384.0;
158 if(u.i > 0x43c07fff ) * p_buffs = 32767;
159 else if ( u.i < 0x43bf8000 ) *p_buffs = -32768;
160 else *p_buffs = u.i - 0x43c00000;
162 p_buffl++ ; p_buffs++ ;
164 p_state = visual_fft_init();
169 msg_Err(p_aout,"unable to initialize FFT transform");
172 p_buffs = p_s16_buff;
173 for ( i = 0 ; i < FFT_BUFFER_SIZE ; i++)
176 p_buffer1[i] = *p_buffs;
177 p_buffs = p_buffs + p_effect->i_nb_chans;
179 fft_perform( p_buffer1, p_output, p_state);
180 for( i = 0; i< FFT_BUFFER_SIZE ; i++ )
181 p_dest[i] = p_output[i] * ( 2 ^ 16 ) / ( ( FFT_BUFFER_SIZE / 2 * 32768 ) ^ 2 );
183 /* Compute the horizontal position of the first band */
184 i_band_width = floor( p_effect->i_width / i_nb_bands);
185 i_start = ( p_effect->i_width - i_band_width * i_nb_bands ) / 2;
187 for ( i = 0 ; i < i_nb_bands ;i++)
189 /* We search the maximum on one scale */
190 for( j = xscale[i], y = 0; j< xscale[ i + 1 ]; j++ )
195 /* Calculate the height of the bar */
198 height[i] = log( y ) * 30;
199 if( height[i] > 380 )
205 /* Draw the bar now */
207 if( height[i] > peaks[i] )
209 peaks[i] = height[i];
211 else if( peaks[i] > 0 )
213 peaks[i] -= PEAK_SPEED;
214 if( peaks[i] < height[i] )
216 peaks[i] = height[i];
224 /* Decrease the bars if needed */
225 if( height[i] <= prev_heights[i] - BAR_DECREASE_SPEED )
227 height[i] = prev_heights[i];
228 height[i] -= BAR_DECREASE_SPEED;
230 prev_heights[i] = height[i];
232 if( peaks[i] > 0 && i_peak )
234 if( peaks[i] >= p_effect->i_height )
235 peaks[i] = p_effect->i_height - 2;
238 for( j = 0; j < i_band_width - 1; j++ )
240 for( k = 0; k < 3; k ++ )
243 *(p_picture->p[0].p_pixels +
244 ( p_effect->i_height - i_line -1 -k ) *
245 p_picture->p[0].i_pitch +
246 ( i_start + i_band_width*i + j ) )
249 *(p_picture->p[1].p_pixels +
250 ( ( p_effect->i_height - i_line ) / 2 - 1 -k/2 ) *
251 p_picture->p[1].i_pitch +
252 ( ( i_start + i_band_width * i + j ) /2 ) )
255 if( i_line + k - 0x0f > 0 )
257 if ( i_line + k - 0x0f < 0xff )
258 *(p_picture->p[2].p_pixels +
259 ( ( p_effect->i_height - i_line ) / 2 - 1 -k/2 ) *
260 p_picture->p[2].i_pitch +
261 ( ( i_start + i_band_width * i + j ) /2 ) )
262 = ( i_line + k ) - 0x0f;
264 *(p_picture->p[2].p_pixels +
265 ( ( p_effect->i_height - i_line ) / 2 - 1 -k/2 ) *
266 p_picture->p[2].i_pitch +
267 ( ( i_start + i_band_width * i + j ) /2 ) )
272 *(p_picture->p[2].p_pixels +
273 ( ( p_effect->i_height - i_line ) / 2 - 1 -k/2 ) *
274 p_picture->p[2].i_pitch +
275 ( ( i_start + i_band_width * i + j ) /2 ) )
282 if(height[i] > p_effect->i_height)
283 height[i] = floor(p_effect->i_height );
285 for( i_line = 0; i_line < height[i]; i_line++ )
287 for( j = 0 ; j < i_band_width - 1; j++)
289 *(p_picture->p[0].p_pixels +
290 (p_effect->i_height - i_line - 1) *
291 p_picture->p[0].i_pitch +
292 ( i_start + i_band_width*i + j ) ) = 0xff;
294 *(p_picture->p[1].p_pixels +
295 ( ( p_effect->i_height - i_line ) / 2 - 1) *
296 p_picture->p[1].i_pitch +
297 ( ( i_start + i_band_width * i + j ) /2 ) ) = 0x00;
299 if( i_line - 0x0f > 0 )
301 if( i_line - 0x0f < 0xff )
302 *(p_picture->p[2].p_pixels +
303 ( ( p_effect->i_height - i_line ) / 2 - 1) *
304 p_picture->p[2].i_pitch +
305 ( ( i_start + i_band_width * i + j ) /2 ) ) =
308 *(p_picture->p[2].p_pixels +
309 ( ( p_effect->i_height - i_line ) / 2 - 1) *
310 p_picture->p[2].i_pitch +
311 ( ( i_start + i_band_width * i + j ) /2 ) ) =
316 *(p_picture->p[2].p_pixels +
317 ( ( p_effect->i_height - i_line ) / 2 - 1) *
318 p_picture->p[2].i_pitch +
319 ( ( i_start + i_band_width * i + j ) /2 ) ) =
326 fft_close( p_state );
335 /*****************************************************************************
336 * spectrometer_Run: derivative spectrum analysis
337 *****************************************************************************/
338 int spectrometer_Run(visual_effect_t * p_effect, aout_instance_t *p_aout,
339 aout_buffer_t * p_buffer , picture_t * p_picture)
341 #define Y(R,G,B) ((uint8_t)( (R * .299) + (G * .587) + (B * .114) ))
342 #define U(R,G,B) ((uint8_t)( (R * -.169) + (G * -.332) + (B * .500) + 128 ))
343 #define V(R,G,B) ((uint8_t)( (R * .500) + (G * -.419) + (B * -.0813) + 128 ))
344 float p_output[FFT_BUFFER_SIZE]; /* Raw FFT Result */
345 int *height; /* Bar heights */
346 int *peaks; /* Peaks */
347 int i_80_bands; /* number of bands : 80 if true else 20 */
348 int i_nb_bands; /* number of bands : 80 or 20 */
349 int i_band_width; /* width of bands */
350 int i_separ; /* Should we let blanks ? */
351 int i_amp; /* Vertical amplification */
352 int i_peak; /* Should we draw peaks ? */
354 int i_original; /* original spectrum graphic routine */
355 int i_rad; /* radius of circle of base of bands */
356 int i_sections; /* sections of spectranalysis */
357 int i_extra_width; /* extra width on peak */
358 int i_peak_height; /* height of peak */
359 int c; /* sentinel container of total spectral sections */
360 double band_sep_angle; /* angled separation between beginning of each band */
361 double section_sep_angle;/* " " ' " ' " " spectrum section */
362 int max_band_length; /* try not to go out of screen */
363 int i_show_base; /* Should we draw base of circle ? */
364 int i_show_bands; /* Should we draw bands ? */
365 //int i_invert_bands; /* do the bands point inward ? */
366 double a; /* for various misc angle situations in radians */
367 int x,y,xx,yy; /* various misc x/y */
368 char color1; /* V slide on a YUV color cube */
369 //char color2; /* U slide.. ? color2 fade color ? */
371 /* Horizontal scale for 20-band equalizer */
372 const int xscale1[]={0,1,2,3,4,5,6,7,8,11,15,20,27,
373 36,47,62,82,107,141,184,255};
375 /* Horizontal scale for 80-band equalizer */
376 const int xscale2[] =
377 {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,
378 19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,
379 35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,
380 52,53,54,55,56,57,58,59,61,63,67,72,77,82,87,93,99,105,
381 110,115,121,130,141,152,163,174,185,200,255};
383 const double y_scale = 3.60673760222; /* (log 256) */
385 fft_state *p_state; /* internal FFT data */
389 int16_t p_dest[FFT_BUFFER_SIZE]; /* Adapted FFT result */
390 int16_t p_buffer1[FFT_BUFFER_SIZE]; /* Buffer on which we perform
391 the FFT (first channel) */
392 float *p_buffl = /* Original buffer */
393 (float*)p_buffer->p_buffer;
395 int16_t *p_buffs; /* int16_t converted buffer */
396 int16_t *p_s16_buff = NULL; /* int16_t converted buffer */
400 p_s16_buff = (int16_t*)malloc(
401 p_buffer->i_nb_samples * p_effect->i_nb_chans * sizeof(int16_t));
406 p_buffs = p_s16_buff;
407 i_original = config_GetInt ( p_aout, "spect-show-original" );
408 i_80_bands = config_GetInt ( p_aout, "spect-80-bands" );
409 i_separ = config_GetInt ( p_aout, "spect-separ" );
410 i_amp = config_GetInt ( p_aout, "spect-amp" );
411 i_peak = config_GetInt ( p_aout, "spect-show-peaks" );
412 i_show_base = config_GetInt ( p_aout, "spect-show-base" );
413 i_show_bands = config_GetInt ( p_aout, "spect-show-bands" );
414 i_rad = config_GetInt ( p_aout, "spect-radius" );
415 i_sections = config_GetInt ( p_aout, "spect-sections" );
416 i_extra_width = config_GetInt ( p_aout, "spect-peak-width" );
417 i_peak_height = config_GetInt ( p_aout, "spect-peak-height" );
418 color1 = config_GetInt ( p_aout, "spect-color" );
431 if( !p_effect->p_data )
433 p_effect->p_data=(void *)malloc( 80 * sizeof(int) );
434 if( !p_effect->p_data )
439 peaks = (int *)p_effect->p_data;
440 for( i = 0 ; i < i_nb_bands ; i++ )
447 peaks =(int *)p_effect->p_data;
450 height = (int *)malloc( i_nb_bands * sizeof(int) );
453 free( p_effect->p_data );
458 /* Convert the buffer to int16_t */
459 /* Pasted from float32tos16.c */
460 for (i = p_buffer->i_nb_samples * p_effect->i_nb_chans; i--; )
462 union { float f; int32_t i; } u;
463 u.f = *p_buffl + 384.0;
464 if(u.i > 0x43c07fff ) * p_buffs = 32767;
465 else if ( u.i < 0x43bf8000 ) *p_buffs = -32768;
466 else *p_buffs = u.i - 0x43c00000;
468 p_buffl++ ; p_buffs++ ;
470 p_state = visual_fft_init();
473 msg_Err(p_aout,"unable to initialize FFT transform");
475 free( p_effect->p_data );
479 p_buffs = p_s16_buff;
480 for ( i = 0 ; i < FFT_BUFFER_SIZE ; i++)
483 p_buffer1[i] = *p_buffs;
484 p_buffs = p_buffs + p_effect->i_nb_chans;
486 fft_perform( p_buffer1, p_output, p_state);
487 for(i= 0; i< FFT_BUFFER_SIZE ; i++ )
488 p_dest[i] = ( (int) sqrt( p_output [ i ] ) ) >> 8;
490 i_nb_bands *= i_sections;
492 for ( i = 0 ; i< i_nb_bands/i_sections ;i++)
494 /* We search the maximum on one scale */
495 for( j = xscale[i] , y=0 ; j< xscale[ i + 1 ] ; j++ )
500 /* Calculate the height of the bar */
501 y >>=7;/* remove some noise */
504 height[i] = (int)log(y)* y_scale;
513 /* Draw the bar now */
514 i_band_width = floor( p_effect->i_width / (i_nb_bands/i_sections)) ;
516 if( i_amp * height[i] > peaks[i])
518 peaks[i] = i_amp * height[i];
520 else if (peaks[i] > 0 )
522 peaks[i] -= PEAK_SPEED;
523 if( peaks[i] < i_amp * height[i] )
525 peaks[i] = i_amp * height[i];
533 if( i_original != 0 )
535 if( peaks[i] > 0 && i_peak )
537 if( peaks[i] >= p_effect->i_height )
538 peaks[i] = p_effect->i_height - 2;
541 for( j = 0 ; j< i_band_width - i_separ; j++)
543 for( k = 0 ; k< 3 ; k ++)
546 *(p_picture->p[0].p_pixels +
547 (p_effect->i_height - i_line -1 -k ) *
548 p_picture->p[0].i_pitch + (i_band_width*i +j) )
551 *(p_picture->p[1].p_pixels +
552 ( ( p_effect->i_height - i_line ) / 2 -1 -k/2 ) *
553 p_picture->p[1].i_pitch +
554 ( ( i_band_width * i + j ) /2 ) )
557 if( 0x04 * (i_line + k ) - 0x0f > 0 )
559 if ( 0x04 * (i_line + k ) -0x0f < 0xff)
560 *(p_picture->p[2].p_pixels +
561 ( ( p_effect->i_height - i_line ) / 2 - 1 -k/2 ) *
562 p_picture->p[2].i_pitch +
563 ( ( i_band_width * i + j ) /2 ) )
564 = ( 0x04 * ( i_line + k ) ) -0x0f ;
566 *(p_picture->p[2].p_pixels +
567 ( ( p_effect->i_height - i_line ) / 2 - 1 -k/2 ) *
568 p_picture->p[2].i_pitch +
569 ( ( i_band_width * i + j ) /2 ) )
574 *(p_picture->p[2].p_pixels +
575 ( ( p_effect->i_height - i_line ) / 2 - 1 -k/2 ) *
576 p_picture->p[2].i_pitch +
577 ( ( i_band_width * i + j ) /2 ) )
583 if(height[i] * i_amp > p_effect->i_height)
584 height[i] = floor(p_effect->i_height / i_amp );
586 for(i_line = 0 ; i_line < i_amp * height[i]; i_line ++ )
588 for( j = 0 ; j< i_band_width - i_separ ; j++)
590 *(p_picture->p[0].p_pixels +
591 (p_effect->i_height - i_line -1) *
592 p_picture->p[0].i_pitch + (i_band_width*i +j) ) = 0xff;
594 *(p_picture->p[1].p_pixels +
595 ( ( p_effect->i_height - i_line ) / 2 -1) *
596 p_picture->p[1].i_pitch +
597 ( ( i_band_width * i + j ) /2 ) ) = 0x00;
599 if( 0x04 * i_line - 0x0f > 0 )
601 if( 0x04 * i_line - 0x0f < 0xff )
602 *(p_picture->p[2].p_pixels +
603 ( ( p_effect->i_height - i_line ) / 2 - 1) *
604 p_picture->p[2].i_pitch +
605 ( ( i_band_width * i + j ) /2 ) ) =
606 ( 0x04 * i_line) -0x0f ;
608 *(p_picture->p[2].p_pixels +
609 ( ( p_effect->i_height - i_line ) / 2 - 1) *
610 p_picture->p[2].i_pitch +
611 ( ( i_band_width * i + j ) /2 ) ) =
616 *(p_picture->p[2].p_pixels +
617 ( ( p_effect->i_height - i_line ) / 2 - 1) *
618 p_picture->p[2].i_pitch +
619 ( ( i_band_width * i + j ) /2 ) ) =
627 band_sep_angle = 360.0 / i_nb_bands;
628 section_sep_angle = 360.0 / i_sections;
629 if( i_peak_height < 1 )
631 max_band_length = p_effect->i_height / 2 - ( i_rad + i_peak_height + 1 );
633 i_band_width = floor( 360 / i_nb_bands - i_separ );
634 if( i_band_width < 1 )
637 for( c = 0 ; c < i_sections ; c++ )
638 for( i = 0 ; i < (i_nb_bands / i_sections) ; i++ )
641 if( peaks[i] > 0 && i_peak )
643 if( peaks[i] >= p_effect->i_height )
644 peaks[i] = p_effect->i_height - 2;
647 /* circular line pattern(so color blend is more visible) */
648 for( j = 0 ; j < i_peak_height ; j++ )
650 //x = p_picture->p[0].i_pitch / 2;
651 x = p_effect->i_width / 2;
652 y = p_effect->i_height / 2;
655 for( k = 0 ; k < (i_band_width + i_extra_width) ; k++ )
659 a = ( (i+1) * band_sep_angle + section_sep_angle * (c+1) + k )
661 x += (double)( cos(a) * (double)( i_line + j + i_rad ) );
662 y += (double)( -sin(a) * (double)( i_line + j + i_rad ) );
664 *(p_picture->p[0].p_pixels + x + y * p_picture->p[0].i_pitch
665 ) = 255;/* Y(R,G,B); */
670 *(p_picture->p[1].p_pixels + x + y * p_picture->p[1].i_pitch
671 ) = 0;/* U(R,G,B); */
673 if( 0x04 * (i_line + k ) - 0x0f > 0 )
675 if ( 0x04 * (i_line + k ) -0x0f < 0xff)
676 *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
677 ) = ( 0x04 * ( i_line + k ) ) -(color1-1);/* -V(R,G,B); */
679 *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
680 ) = 255;/* V(R,G,B); */
684 *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
685 ) = color1;/* V(R,G,B); */
691 if( (height[i] * i_amp) > p_effect->i_height )
692 height[i] = floor( p_effect->i_height / i_amp );
694 /* DO BASE OF BAND (mostly makes a circle) */
695 if( i_show_base != 0 )
697 //x = p_picture->p[0].i_pitch / 2;
698 x = p_effect->i_width / 2;
699 y = p_effect->i_height / 2;
701 a = ( (i+1) * band_sep_angle + section_sep_angle * (c+1) )
703 x += (double)( cos(a) * (double)i_rad );/* newb-forceful casting */
704 y += (double)( -sin(a) * (double)i_rad );
706 *(p_picture->p[0].p_pixels + x + y * p_picture->p[0].i_pitch
707 ) = 255;/* Y(R,G,B); */
712 *(p_picture->p[1].p_pixels + x + y * p_picture->p[1].i_pitch
713 ) = 0;/* U(R,G,B); */
715 if( 0x04 * i_line - 0x0f > 0 )
717 if( 0x04 * i_line -0x0f < 0xff)
718 *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
719 ) = ( 0x04 * i_line) -(color1-1);/* -V(R,G,B); */
721 *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
722 ) = 255;/* V(R,G,B); */
726 *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
727 ) = color1;/* V(R,G,B); */
732 if( i_show_bands != 0 )
733 for( j = 0 ; j < i_band_width ; j++ )
735 x = p_effect->i_width / 2;
736 y = p_effect->i_height / 2;
739 a = ( (i+1) * band_sep_angle + section_sep_angle * (c+1) + j )
742 for( k = (i_rad+1) ; k < max_band_length ; k++ )
744 if( (k-i_rad) > height[i] )
749 x += (double)( cos(a) * (double)k );/* newbed! */
750 y += (double)( -sin(a) * (double)k );
752 *(p_picture->p[0].p_pixels + x + y * p_picture->p[0].i_pitch
758 *(p_picture->p[1].p_pixels + x + y * p_picture->p[1].i_pitch
761 if( 0x04 * i_line - 0x0f > 0 )
763 if ( 0x04 * i_line -0x0f < 0xff)
764 *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
765 ) = ( 0x04 * i_line) -(color1-1);
767 *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
772 *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
779 fft_close( p_state );
788 /*****************************************************************************
789 * scope_Run: scope effect
790 *****************************************************************************/
791 int scope_Run(visual_effect_t * p_effect, aout_instance_t *p_aout,
792 aout_buffer_t * p_buffer , picture_t * p_picture)
797 uint8_t *ppp_area[2][3];
800 for( i_index = 0 ; i_index < 2 ; i_index++ )
803 for( j = 0 ; j < 3 ; j++ )
805 ppp_area[i_index][j] =
806 p_picture->p[j].p_pixels + i_index * p_picture->p[j].i_lines
807 / 2 * p_picture->p[j].i_pitch;
811 for( i_index = 0, p_sample = (float *)p_buffer->p_buffer;
812 i_index < p_effect->i_width;
818 i_value = (*p_sample++ +1) * 127;
820 + p_picture->p[0].i_pitch * i_index / p_effect->i_width
821 + p_picture->p[0].i_lines * i_value / 512
822 * p_picture->p[0].i_pitch) = 0xbf;
824 + p_picture->p[1].i_pitch * i_index / p_effect->i_width
825 + p_picture->p[1].i_lines * i_value / 512
826 * p_picture->p[1].i_pitch) = 0xff;
830 i_value = ( *p_sample++ +1 ) * 127;
832 + p_picture->p[0].i_pitch * i_index / p_effect->i_width
833 + p_picture->p[0].i_lines * i_value / 512
834 * p_picture->p[0].i_pitch) = 0x9f;
836 + p_picture->p[2].i_pitch * i_index / p_effect->i_width
837 + p_picture->p[2].i_lines * i_value / 512
838 * p_picture->p[2].i_pitch) = 0xdd;
844 /*****************************************************************************
845 * vuMeter_Run: vu meter effect
846 *****************************************************************************/
847 int vuMeter_Run(visual_effect_t * p_effect, aout_instance_t *p_aout,
848 aout_buffer_t * p_buffer , picture_t * p_picture)
852 float *p_sample = (float *)p_buffer->p_buffer;
857 /* Compute the peack values */
858 for ( i = 0 ; i < 1024; i++ )
860 ch = (*p_sample++) * 256;
864 ch = (*p_sample++) * 256;
869 i_value_l = abs(i_value_l);
870 i_value_r = abs(i_value_r);
872 /* Stay under maximum value admited */
873 if ( i_value_l > 200 * M_PI_2 )
874 i_value_l = 200 * M_PI_2;
875 if ( i_value_r > 200 * M_PI_2 )
876 i_value_r = 200 * M_PI_2;
880 if( !p_effect->p_data )
882 /* Allocate memory to save hand positions */
883 p_effect->p_data = (void *)malloc( 2 * sizeof(float) );
884 i_value = p_effect->p_data;
885 i_value[0] = i_value_l;
886 i_value[1] = i_value_r;
890 /* Make the hands go down slowly if the current values are slower
892 i_value = p_effect->p_data;
894 if ( i_value_l > i_value[0] - 6 )
895 i_value[0] = i_value_l;
897 i_value[0] = i_value[0] - 6;
899 if ( i_value_r > i_value[1] - 6 )
900 i_value[1] = i_value_r;
902 i_value[1] = i_value[1] - 6;
909 for ( j = 0; j < 2; j++ )
911 /* Draw the two scales */
913 teta_grad = GRAD_ANGLE_MIN;
914 for ( teta = -M_PI_4; teta <= M_PI_4; teta = teta + 0.003 )
916 for ( i = 140; i <= 150; i++ )
918 y = i * cos(teta) + 20;
919 x = i * sin(teta) + 150 + 240 * j;
920 /* Compute the last color for the gradation */
921 if (teta >= teta_grad + GRAD_INCR && teta_grad <= GRAD_ANGLE_MAX)
923 teta_grad = teta_grad + GRAD_INCR;
926 *(p_picture->p[0].p_pixels +
927 (p_picture->p[0].i_lines - y - 1 ) * p_picture->p[0].i_pitch
929 *(p_picture->p[1].p_pixels +
930 (p_picture->p[1].i_lines - y / 2 - 1 ) * p_picture->p[1].i_pitch
932 *(p_picture->p[2].p_pixels +
933 (p_picture->p[2].i_lines - y / 2 - 1 ) * p_picture->p[2].i_pitch
934 + x / 2 ) = 0x4D + k;
938 /* Draw the two hands */
939 teta = (float)i_value[j] / 200 - M_PI_4;
940 for ( i = 0; i <= 150; i++ )
942 y = i * cos(teta) + 20;
943 x = i * sin(teta) + 150 + 240 * j;
944 *(p_picture->p[0].p_pixels +
945 (p_picture->p[0].i_lines - y - 1 ) * p_picture->p[0].i_pitch
947 *(p_picture->p[1].p_pixels +
948 (p_picture->p[1].i_lines - y / 2 - 1 ) * p_picture->p[1].i_pitch
950 *(p_picture->p[2].p_pixels +
951 (p_picture->p[2].i_lines - y / 2 - 1 ) * p_picture->p[2].i_pitch
955 /* Draw the hand bases */
956 for ( teta = -M_PI_2; teta <= M_PI_2 + 0.01; teta = teta + 0.003 )
958 for ( i = 0; i < 10; i++ )
960 y = i * cos(teta) + 20;
961 x = i * sin(teta) + 150 + 240 * j;
962 *(p_picture->p[0].p_pixels +
963 (p_picture->p[0].i_lines - y - 1 ) * p_picture->p[0].i_pitch
965 *(p_picture->p[1].p_pixels +
966 (p_picture->p[1].i_lines - y / 2 - 1 ) * p_picture->p[1].i_pitch
968 *(p_picture->p[2].p_pixels +
969 (p_picture->p[2].i_lines - y / 2 - 1 ) * p_picture->p[2].i_pitch