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 */
103 p_s16_buff = malloc( p_buffer->i_nb_samples * p_effect->i_nb_chans * sizeof(int16_t));
107 p_buffs = p_s16_buff;
108 i_80_bands = config_GetInt ( p_aout, "visual-80-bands" );
109 i_peak = config_GetInt ( p_aout, "visual-peaks" );
124 p_effect->p_data = p_data = malloc( sizeof( spectrum_data ) );
131 p_data->peaks = calloc( 80, sizeof(int) );
132 p_data->prev_heights = calloc( 80, sizeof(int) );
134 peaks = ( int * )p_data->peaks;
135 prev_heights = ( int * )p_data->prev_heights;
139 peaks = (int *)p_data->peaks;
140 prev_heights = (int *)p_data->prev_heights;
144 height = malloc( i_nb_bands * sizeof(int) );
150 /* Convert the buffer to int16_t */
151 /* Pasted from float32tos16.c */
152 for (i = p_buffer->i_nb_samples * p_effect->i_nb_chans; i--; )
154 union { float f; int32_t i; } u;
155 u.f = *p_buffl + 384.0;
156 if(u.i > 0x43c07fff ) * p_buffs = 32767;
157 else if ( u.i < 0x43bf8000 ) *p_buffs = -32768;
158 else *p_buffs = u.i - 0x43c00000;
160 p_buffl++ ; p_buffs++ ;
162 p_state = visual_fft_init();
167 msg_Err(p_aout,"unable to initialize FFT transform");
170 p_buffs = p_s16_buff;
171 for ( i = 0 ; i < FFT_BUFFER_SIZE ; i++)
174 p_buffer1[i] = *p_buffs;
176 p_buffs += p_effect->i_nb_chans;
177 if( p_buffs >= &p_s16_buff[p_buffer->i_nb_samples * p_effect->i_nb_chans] )
178 p_buffs = p_s16_buff;
181 fft_perform( p_buffer1, p_output, p_state);
182 for( i = 0; i< FFT_BUFFER_SIZE ; i++ )
183 p_dest[i] = p_output[i] * ( 2 ^ 16 ) / ( ( FFT_BUFFER_SIZE / 2 * 32768 ) ^ 2 );
185 /* Compute the horizontal position of the first band */
186 i_band_width = floor( p_effect->i_width / i_nb_bands);
187 i_start = ( p_effect->i_width - i_band_width * i_nb_bands ) / 2;
189 for ( i = 0 ; i < i_nb_bands ;i++)
191 /* We search the maximum on one scale */
192 for( j = xscale[i], y = 0; j< xscale[ i + 1 ]; j++ )
197 /* Calculate the height of the bar */
200 height[i] = log( y ) * 30;
201 if( height[i] > 380 )
207 /* Draw the bar now */
209 if( height[i] > peaks[i] )
211 peaks[i] = height[i];
213 else if( peaks[i] > 0 )
215 peaks[i] -= PEAK_SPEED;
216 if( peaks[i] < height[i] )
218 peaks[i] = height[i];
226 /* Decrease the bars if needed */
227 if( height[i] <= prev_heights[i] - BAR_DECREASE_SPEED )
229 height[i] = prev_heights[i];
230 height[i] -= BAR_DECREASE_SPEED;
232 prev_heights[i] = height[i];
234 if( peaks[i] > 0 && i_peak )
236 if( peaks[i] >= p_effect->i_height )
237 peaks[i] = p_effect->i_height - 2;
240 for( j = 0; j < i_band_width - 1; j++ )
242 for( k = 0; k < 3; k ++ )
245 *(p_picture->p[0].p_pixels +
246 ( p_effect->i_height - i_line -1 -k ) *
247 p_picture->p[0].i_pitch +
248 ( i_start + i_band_width*i + j ) )
251 *(p_picture->p[1].p_pixels +
252 ( ( p_effect->i_height - i_line ) / 2 - 1 -k/2 ) *
253 p_picture->p[1].i_pitch +
254 ( ( i_start + i_band_width * i + j ) /2 ) )
257 if( i_line + k - 0x0f > 0 )
259 if ( i_line + k - 0x0f < 0xff )
260 *(p_picture->p[2].p_pixels +
261 ( ( p_effect->i_height - i_line ) / 2 - 1 -k/2 ) *
262 p_picture->p[2].i_pitch +
263 ( ( i_start + i_band_width * i + j ) /2 ) )
264 = ( i_line + k ) - 0x0f;
266 *(p_picture->p[2].p_pixels +
267 ( ( p_effect->i_height - i_line ) / 2 - 1 -k/2 ) *
268 p_picture->p[2].i_pitch +
269 ( ( i_start + i_band_width * i + j ) /2 ) )
274 *(p_picture->p[2].p_pixels +
275 ( ( p_effect->i_height - i_line ) / 2 - 1 -k/2 ) *
276 p_picture->p[2].i_pitch +
277 ( ( i_start + i_band_width * i + j ) /2 ) )
284 if(height[i] > p_effect->i_height)
285 height[i] = floor(p_effect->i_height );
287 for( i_line = 0; i_line < height[i]; i_line++ )
289 for( j = 0 ; j < i_band_width - 1; j++)
291 *(p_picture->p[0].p_pixels +
292 (p_effect->i_height - i_line - 1) *
293 p_picture->p[0].i_pitch +
294 ( i_start + i_band_width*i + j ) ) = 0xff;
296 *(p_picture->p[1].p_pixels +
297 ( ( p_effect->i_height - i_line ) / 2 - 1) *
298 p_picture->p[1].i_pitch +
299 ( ( i_start + i_band_width * i + j ) /2 ) ) = 0x00;
301 if( i_line - 0x0f > 0 )
303 if( i_line - 0x0f < 0xff )
304 *(p_picture->p[2].p_pixels +
305 ( ( p_effect->i_height - i_line ) / 2 - 1) *
306 p_picture->p[2].i_pitch +
307 ( ( i_start + i_band_width * i + j ) /2 ) ) =
310 *(p_picture->p[2].p_pixels +
311 ( ( p_effect->i_height - i_line ) / 2 - 1) *
312 p_picture->p[2].i_pitch +
313 ( ( i_start + i_band_width * i + j ) /2 ) ) =
318 *(p_picture->p[2].p_pixels +
319 ( ( p_effect->i_height - i_line ) / 2 - 1) *
320 p_picture->p[2].i_pitch +
321 ( ( i_start + i_band_width * i + j ) /2 ) ) =
328 fft_close( p_state );
337 /*****************************************************************************
338 * spectrometer_Run: derivative spectrum analysis
339 *****************************************************************************/
340 int spectrometer_Run(visual_effect_t * p_effect, aout_instance_t *p_aout,
341 aout_buffer_t * p_buffer , picture_t * p_picture)
343 #define Y(R,G,B) ((uint8_t)( (R * .299) + (G * .587) + (B * .114) ))
344 #define U(R,G,B) ((uint8_t)( (R * -.169) + (G * -.332) + (B * .500) + 128 ))
345 #define V(R,G,B) ((uint8_t)( (R * .500) + (G * -.419) + (B * -.0813) + 128 ))
346 float p_output[FFT_BUFFER_SIZE]; /* Raw FFT Result */
347 int *height; /* Bar heights */
348 int *peaks; /* Peaks */
349 int i_80_bands; /* number of bands : 80 if true else 20 */
350 int i_nb_bands; /* number of bands : 80 or 20 */
351 int i_band_width; /* width of bands */
352 int i_separ; /* Should we let blanks ? */
353 int i_amp; /* Vertical amplification */
354 int i_peak; /* Should we draw peaks ? */
356 int i_original; /* original spectrum graphic routine */
357 int i_rad; /* radius of circle of base of bands */
358 int i_sections; /* sections of spectranalysis */
359 int i_extra_width; /* extra width on peak */
360 int i_peak_height; /* height of peak */
361 int c; /* sentinel container of total spectral sections */
362 double band_sep_angle; /* angled separation between beginning of each band */
363 double section_sep_angle;/* " " ' " ' " " spectrum section */
364 int max_band_length; /* try not to go out of screen */
365 int i_show_base; /* Should we draw base of circle ? */
366 int i_show_bands; /* Should we draw bands ? */
367 //int i_invert_bands; /* do the bands point inward ? */
368 double a; /* for various misc angle situations in radians */
369 int x,y,xx,yy; /* various misc x/y */
370 char color1; /* V slide on a YUV color cube */
371 //char color2; /* U slide.. ? color2 fade color ? */
373 /* Horizontal scale for 20-band equalizer */
374 const int xscale1[]={0,1,2,3,4,5,6,7,8,11,15,20,27,
375 36,47,62,82,107,141,184,255};
377 /* Horizontal scale for 80-band equalizer */
378 const int xscale2[] =
379 {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,
380 19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,
381 35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,
382 52,53,54,55,56,57,58,59,61,63,67,72,77,82,87,93,99,105,
383 110,115,121,130,141,152,163,174,185,200,255};
385 const double y_scale = 3.60673760222; /* (log 256) */
387 fft_state *p_state; /* internal FFT data */
391 int16_t p_dest[FFT_BUFFER_SIZE]; /* Adapted FFT result */
392 int16_t p_buffer1[FFT_BUFFER_SIZE]; /* Buffer on which we perform
393 the FFT (first channel) */
394 float *p_buffl = /* Original buffer */
395 (float*)p_buffer->p_buffer;
397 int16_t *p_buffs; /* int16_t converted buffer */
398 int16_t *p_s16_buff; /* int16_t converted buffer */
402 p_s16_buff = malloc( 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;
485 p_buffs += p_effect->i_nb_chans;
486 if( p_buffs >= &p_s16_buff[p_buffer->i_nb_samples * p_effect->i_nb_chans] )
487 p_buffs = p_s16_buff;
489 fft_perform( p_buffer1, p_output, p_state);
490 for(i = 0; i < FFT_BUFFER_SIZE; i++)
492 int sqrti = sqrt(p_output[i]);
493 p_dest[i] = sqrti >> 8;
496 i_nb_bands *= i_sections;
498 for ( i = 0 ; i< i_nb_bands/i_sections ;i++)
500 /* We search the maximum on one scale */
501 for( j = xscale[i] , y=0 ; j< xscale[ i + 1 ] ; j++ )
506 /* Calculate the height of the bar */
507 y >>=7;/* remove some noise */
511 height[i] = logy * y_scale;
520 /* Draw the bar now */
521 i_band_width = floor( p_effect->i_width / (i_nb_bands/i_sections)) ;
523 if( i_amp * height[i] > peaks[i])
525 peaks[i] = i_amp * height[i];
527 else if (peaks[i] > 0 )
529 peaks[i] -= PEAK_SPEED;
530 if( peaks[i] < i_amp * height[i] )
532 peaks[i] = i_amp * height[i];
540 if( i_original != 0 )
542 if( peaks[i] > 0 && i_peak )
544 if( peaks[i] >= p_effect->i_height )
545 peaks[i] = p_effect->i_height - 2;
548 for( j = 0 ; j< i_band_width - i_separ; j++)
550 for( k = 0 ; k< 3 ; k ++)
553 *(p_picture->p[0].p_pixels +
554 (p_effect->i_height - i_line -1 -k ) *
555 p_picture->p[0].i_pitch + (i_band_width*i +j) )
558 *(p_picture->p[1].p_pixels +
559 ( ( p_effect->i_height - i_line ) / 2 -1 -k/2 ) *
560 p_picture->p[1].i_pitch +
561 ( ( i_band_width * i + j ) /2 ) )
564 if( 0x04 * (i_line + k ) - 0x0f > 0 )
566 if ( 0x04 * (i_line + k ) -0x0f < 0xff)
567 *(p_picture->p[2].p_pixels +
568 ( ( p_effect->i_height - i_line ) / 2 - 1 -k/2 ) *
569 p_picture->p[2].i_pitch +
570 ( ( i_band_width * i + j ) /2 ) )
571 = ( 0x04 * ( i_line + k ) ) -0x0f ;
573 *(p_picture->p[2].p_pixels +
574 ( ( p_effect->i_height - i_line ) / 2 - 1 -k/2 ) *
575 p_picture->p[2].i_pitch +
576 ( ( i_band_width * i + j ) /2 ) )
581 *(p_picture->p[2].p_pixels +
582 ( ( p_effect->i_height - i_line ) / 2 - 1 -k/2 ) *
583 p_picture->p[2].i_pitch +
584 ( ( i_band_width * i + j ) /2 ) )
590 if(height[i] * i_amp > p_effect->i_height)
591 height[i] = floor(p_effect->i_height / i_amp );
593 for(i_line = 0 ; i_line < i_amp * height[i]; i_line ++ )
595 for( j = 0 ; j< i_band_width - i_separ ; j++)
597 *(p_picture->p[0].p_pixels +
598 (p_effect->i_height - i_line -1) *
599 p_picture->p[0].i_pitch + (i_band_width*i +j) ) = 0xff;
601 *(p_picture->p[1].p_pixels +
602 ( ( p_effect->i_height - i_line ) / 2 -1) *
603 p_picture->p[1].i_pitch +
604 ( ( i_band_width * i + j ) /2 ) ) = 0x00;
606 if( 0x04 * i_line - 0x0f > 0 )
608 if( 0x04 * i_line - 0x0f < 0xff )
609 *(p_picture->p[2].p_pixels +
610 ( ( p_effect->i_height - i_line ) / 2 - 1) *
611 p_picture->p[2].i_pitch +
612 ( ( i_band_width * i + j ) /2 ) ) =
613 ( 0x04 * i_line) -0x0f ;
615 *(p_picture->p[2].p_pixels +
616 ( ( p_effect->i_height - i_line ) / 2 - 1) *
617 p_picture->p[2].i_pitch +
618 ( ( i_band_width * i + j ) /2 ) ) =
623 *(p_picture->p[2].p_pixels +
624 ( ( p_effect->i_height - i_line ) / 2 - 1) *
625 p_picture->p[2].i_pitch +
626 ( ( i_band_width * i + j ) /2 ) ) =
634 band_sep_angle = 360.0 / i_nb_bands;
635 section_sep_angle = 360.0 / i_sections;
636 if( i_peak_height < 1 )
638 max_band_length = p_effect->i_height / 2 - ( i_rad + i_peak_height + 1 );
640 i_band_width = floor( 360 / i_nb_bands - i_separ );
641 if( i_band_width < 1 )
644 for( c = 0 ; c < i_sections ; c++ )
645 for( i = 0 ; i < (i_nb_bands / i_sections) ; i++ )
648 if( peaks[i] > 0 && i_peak )
650 if( peaks[i] >= p_effect->i_height )
651 peaks[i] = p_effect->i_height - 2;
654 /* circular line pattern(so color blend is more visible) */
655 for( j = 0 ; j < i_peak_height ; j++ )
657 //x = p_picture->p[0].i_pitch / 2;
658 x = p_effect->i_width / 2;
659 y = p_effect->i_height / 2;
662 for( k = 0 ; k < (i_band_width + i_extra_width) ; k++ )
666 a = ( (i+1) * band_sep_angle + section_sep_angle * (c+1) + k )
668 x += (double)( cos(a) * (double)( i_line + j + i_rad ) );
669 y += (double)( -sin(a) * (double)( i_line + j + i_rad ) );
671 *(p_picture->p[0].p_pixels + x + y * p_picture->p[0].i_pitch
672 ) = 255;/* Y(R,G,B); */
677 *(p_picture->p[1].p_pixels + x + y * p_picture->p[1].i_pitch
678 ) = 0;/* U(R,G,B); */
680 if( 0x04 * (i_line + k ) - 0x0f > 0 )
682 if ( 0x04 * (i_line + k ) -0x0f < 0xff)
683 *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
684 ) = ( 0x04 * ( i_line + k ) ) -(color1-1);/* -V(R,G,B); */
686 *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
687 ) = 255;/* V(R,G,B); */
691 *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
692 ) = color1;/* V(R,G,B); */
698 if( (height[i] * i_amp) > p_effect->i_height )
699 height[i] = floor( p_effect->i_height / i_amp );
701 /* DO BASE OF BAND (mostly makes a circle) */
702 if( i_show_base != 0 )
704 //x = p_picture->p[0].i_pitch / 2;
705 x = p_effect->i_width / 2;
706 y = p_effect->i_height / 2;
708 a = ( (i+1) * band_sep_angle + section_sep_angle * (c+1) )
710 x += (double)( cos(a) * (double)i_rad );/* newb-forceful casting */
711 y += (double)( -sin(a) * (double)i_rad );
713 *(p_picture->p[0].p_pixels + x + y * p_picture->p[0].i_pitch
714 ) = 255;/* Y(R,G,B); */
719 *(p_picture->p[1].p_pixels + x + y * p_picture->p[1].i_pitch
720 ) = 0;/* U(R,G,B); */
722 if( 0x04 * i_line - 0x0f > 0 )
724 if( 0x04 * i_line -0x0f < 0xff)
725 *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
726 ) = ( 0x04 * i_line) -(color1-1);/* -V(R,G,B); */
728 *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
729 ) = 255;/* V(R,G,B); */
733 *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
734 ) = color1;/* V(R,G,B); */
739 if( i_show_bands != 0 )
740 for( j = 0 ; j < i_band_width ; j++ )
742 x = p_effect->i_width / 2;
743 y = p_effect->i_height / 2;
746 a = ( (i+1) * band_sep_angle + section_sep_angle * (c+1) + j )
749 for( k = (i_rad+1) ; k < max_band_length ; k++ )
751 if( (k-i_rad) > height[i] )
756 x += (double)( cos(a) * (double)k );/* newbed! */
757 y += (double)( -sin(a) * (double)k );
759 *(p_picture->p[0].p_pixels + x + y * p_picture->p[0].i_pitch
765 *(p_picture->p[1].p_pixels + x + y * p_picture->p[1].i_pitch
768 if( 0x04 * i_line - 0x0f > 0 )
770 if ( 0x04 * i_line -0x0f < 0xff)
771 *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
772 ) = ( 0x04 * i_line) -(color1-1);
774 *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
779 *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
786 fft_close( p_state );
795 /*****************************************************************************
796 * scope_Run: scope effect
797 *****************************************************************************/
798 int scope_Run(visual_effect_t * p_effect, aout_instance_t *p_aout,
799 aout_buffer_t * p_buffer , picture_t * p_picture)
804 uint8_t *ppp_area[2][3];
807 for( i_index = 0 ; i_index < 2 ; i_index++ )
810 for( j = 0 ; j < 3 ; j++ )
812 ppp_area[i_index][j] =
813 p_picture->p[j].p_pixels + i_index * p_picture->p[j].i_lines
814 / 2 * p_picture->p[j].i_pitch;
818 for( i_index = 0, p_sample = (float *)p_buffer->p_buffer;
819 i_index < __MIN( p_effect->i_width, p_buffer->i_nb_samples );
825 i_value = p_sample[p_effect->i_idx_left] * 127;
827 + p_picture->p[0].i_pitch * i_index / p_effect->i_width
828 + p_picture->p[0].i_lines * i_value / 512
829 * p_picture->p[0].i_pitch) = 0xbf;
831 + p_picture->p[1].i_pitch * i_index / p_effect->i_width
832 + p_picture->p[1].i_lines * i_value / 512
833 * p_picture->p[1].i_pitch) = 0xff;
837 i_value = p_sample[p_effect->i_idx_right] * 127;
839 + p_picture->p[0].i_pitch * i_index / p_effect->i_width
840 + p_picture->p[0].i_lines * i_value / 512
841 * p_picture->p[0].i_pitch) = 0x9f;
843 + p_picture->p[2].i_pitch * i_index / p_effect->i_width
844 + p_picture->p[2].i_lines * i_value / 512
845 * p_picture->p[2].i_pitch) = 0xdd;
847 p_sample += p_effect->i_nb_chans;
853 /*****************************************************************************
854 * vuMeter_Run: vu meter effect
855 *****************************************************************************/
856 int vuMeter_Run(visual_effect_t * p_effect, aout_instance_t *p_aout,
857 aout_buffer_t * p_buffer , picture_t * p_picture)
864 /* Compute the peack values */
865 for ( i = 0 ; i < p_buffer->i_nb_samples; i++ )
867 const float *p_sample = (float *)p_buffer->p_buffer;
870 ch = p_sample[p_effect->i_idx_left] * 256;
874 ch = p_sample[p_effect->i_idx_right] * 256;
878 p_sample += p_effect->i_nb_chans;
881 i_value_l = abs(i_value_l);
882 i_value_r = abs(i_value_r);
884 /* Stay under maximum value admited */
885 if ( i_value_l > 200 * M_PI_2 )
886 i_value_l = 200 * M_PI_2;
887 if ( i_value_r > 200 * M_PI_2 )
888 i_value_r = 200 * M_PI_2;
892 if( !p_effect->p_data )
894 /* Allocate memory to save hand positions */
895 p_effect->p_data = (void *)malloc( 2 * sizeof(float) );
896 i_value = p_effect->p_data;
897 i_value[0] = i_value_l;
898 i_value[1] = i_value_r;
902 /* Make the hands go down slowly if the current values are slower
904 i_value = p_effect->p_data;
906 if ( i_value_l > i_value[0] - 6 )
907 i_value[0] = i_value_l;
909 i_value[0] = i_value[0] - 6;
911 if ( i_value_r > i_value[1] - 6 )
912 i_value[1] = i_value_r;
914 i_value[1] = i_value[1] - 6;
921 for ( j = 0; j < 2; j++ )
923 /* Draw the two scales */
925 teta_grad = GRAD_ANGLE_MIN;
926 for ( teta = -M_PI_4; teta <= M_PI_4; teta = teta + 0.003 )
928 for ( i = 140; i <= 150; i++ )
930 y = i * cos(teta) + 20;
931 x = i * sin(teta) + 150 + 240 * j;
932 /* Compute the last color for the gradation */
933 if (teta >= teta_grad + GRAD_INCR && teta_grad <= GRAD_ANGLE_MAX)
935 teta_grad = teta_grad + GRAD_INCR;
938 *(p_picture->p[0].p_pixels +
939 (p_picture->p[0].i_lines - y - 1 ) * p_picture->p[0].i_pitch
941 *(p_picture->p[1].p_pixels +
942 (p_picture->p[1].i_lines - y / 2 - 1 ) * p_picture->p[1].i_pitch
944 *(p_picture->p[2].p_pixels +
945 (p_picture->p[2].i_lines - y / 2 - 1 ) * p_picture->p[2].i_pitch
946 + x / 2 ) = 0x4D + k;
950 /* Draw the two hands */
951 teta = (float)i_value[j] / 200 - M_PI_4;
952 for ( i = 0; i <= 150; i++ )
954 y = i * cos(teta) + 20;
955 x = i * sin(teta) + 150 + 240 * j;
956 *(p_picture->p[0].p_pixels +
957 (p_picture->p[0].i_lines - y - 1 ) * p_picture->p[0].i_pitch
959 *(p_picture->p[1].p_pixels +
960 (p_picture->p[1].i_lines - y / 2 - 1 ) * p_picture->p[1].i_pitch
962 *(p_picture->p[2].p_pixels +
963 (p_picture->p[2].i_lines - y / 2 - 1 ) * p_picture->p[2].i_pitch
967 /* Draw the hand bases */
968 for ( teta = -M_PI_2; teta <= M_PI_2 + 0.01; teta = teta + 0.003 )
970 for ( i = 0; i < 10; i++ )
972 y = i * cos(teta) + 20;
973 x = i * sin(teta) + 150 + 240 * j;
974 *(p_picture->p[0].p_pixels +
975 (p_picture->p[0].i_lines - y - 1 ) * p_picture->p[0].i_pitch
977 *(p_picture->p[1].p_pixels +
978 (p_picture->p[1].i_lines - y / 2 - 1 ) * p_picture->p[1].i_pitch
980 *(p_picture->p[2].p_pixels +
981 (p_picture->p[2].i_lines - y / 2 - 1 ) * p_picture->p[2].i_pitch