git.sesse.net Git - vlc/blob - modules/visualization/visual/effects.c

   1 /*****************************************************************************
   2  * effects.c : Effects for the visualization system
   3  *****************************************************************************
   4  * Copyright (C) 2002-2009 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Clément Stenac <zorglub@via.ecp.fr>
   8  *          Adrien Maglo <magsoft@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 #ifdef HAVE_CONFIG_H
  29 # include "config.h"
  30 #endif
  31
  32 #include <vlc_common.h>
  33 #include <vlc_vout.h>
  34 #include <vlc_aout.h>
  35
  36 #include "visual.h"
  37 #include <math.h>
  38
  39 #include "fft.h"
  40
  41 #define PEAK_SPEED 1
  42 #define BAR_DECREASE_SPEED 5
  43
  44 #define GRAD_ANGLE_MIN 0.2
  45 #define GRAD_ANGLE_MAX 0.5
  46 #define GRAD_INCR 0.01
  47
  48 /*****************************************************************************
  49  * dummy_Run
  50  *****************************************************************************/
  51 int dummy_Run( visual_effect_t * p_effect, vlc_object_t *p_aout,
  52                const block_t * p_buffer , picture_t * p_picture)
  53 {
  54     VLC_UNUSED(p_effect); VLC_UNUSED(p_aout); VLC_UNUSED(p_buffer);
  55     VLC_UNUSED(p_picture);
  56     return 0;
  57 }
  58
  59 /*****************************************************************************
  60  * spectrum_Run: spectrum analyser
  61  *****************************************************************************/
  62 int spectrum_Run(visual_effect_t * p_effect, vlc_object_t *p_aout,
  63                  const block_t * p_buffer , picture_t * p_picture)
  64 {
  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 ? */
  75
  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};
  79
  80     /* Horizontal scale for 80-band equalizer */
  81     const int xscale2[] =
  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};
  87     const int *xscale;
  88
  89     fft_state *p_state;                 /* internal FFT data */
  90
  91     int i , j , y , k;
  92     int i_line;
  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) */
  96
  97     float *p_buffl =                     /* Original buffer */
  98             (float*)p_buffer->p_buffer;
  99
 100     int16_t  *p_buffs;                    /* int16_t converted buffer */
 101     int16_t  *p_s16_buff;                 /* int16_t converted buffer */
 102
 103     /* Create p_data if needed */
 104     if( !p_data )
 105     {
 106         p_effect->p_data = p_data = malloc( sizeof( spectrum_data ) );
 107         if( !p_data )
 108         {
 109             free( p_s16_buff );
 110             return -1;
 111         }
 112
 113         p_data->peaks = calloc( 80, sizeof(int) );
 114         p_data->prev_heights = calloc( 80, sizeof(int) );
 115
 116         p_data->i_prev_nb_samples = 0;
 117         p_data->p_prev_s16_buff = NULL;
 118     }
 119     peaks = (int *)p_data->peaks;
 120     prev_heights = (int *)p_data->prev_heights;
 121
 122     /* Allocate the buffer only if the number of samples change */
 123     if( p_buffer->i_nb_samples != p_data->i_prev_nb_samples )
 124     {
 125         free( p_data->p_prev_s16_buff );
 126         p_data->p_prev_s16_buff = malloc( p_buffer->i_nb_samples *
 127                                           p_effect->i_nb_chans *
 128                                           sizeof(int16_t));
 129         p_data->i_prev_nb_samples = p_buffer->i_nb_samples;
 130         if( !p_data->p_prev_s16_buff )
 131             return -1;
 132     }
 133     p_buffs = p_s16_buff = p_data->p_prev_s16_buff;
 134
 135     i_80_bands = config_GetInt ( p_aout, "visual-80-bands" );
 136     i_peak     = config_GetInt ( p_aout, "visual-peaks" );
 137
 138     if( i_80_bands != 0)
 139     {
 140         xscale = xscale2;
 141         i_nb_bands = 80;
 142     }
 143     else
 144     {
 145         xscale = xscale1;
 146         i_nb_bands = 20;
 147     }
 148
 149     height = malloc( i_nb_bands * sizeof(int) );
 150     if( !height )
 151     {
 152         return -1;
 153     }
 154     /* Convert the buffer to int16_t  */
 155     /* Pasted from float32tos16.c */
 156     for (i = p_buffer->i_nb_samples * p_effect->i_nb_chans; i--; )
 157     {
 158         union { float f; int32_t i; } u;
 159         u.f = *p_buffl + 384.0;
 160         if(u.i >  0x43c07fff ) * p_buffs = 32767;
 161         else if ( u.i < 0x43bf8000 ) *p_buffs = -32768;
 162         else *p_buffs = u.i - 0x43c00000;
 163
 164         p_buffl++ ; p_buffs++ ;
 165     }
 166     p_state  = visual_fft_init();
 167     if( !p_state)
 168     {
 169         free( height );
 170         msg_Err(p_aout,"unable to initialize FFT transform");
 171         return -1;
 172     }
 173     p_buffs = p_s16_buff;
 174     for ( i = 0 ; i < FFT_BUFFER_SIZE ; i++)
 175     {
 176         p_output[i]  = 0;
 177         p_buffer1[i] = *p_buffs;
 178
 179         p_buffs += p_effect->i_nb_chans;
 180         if( p_buffs >= &p_s16_buff[p_buffer->i_nb_samples * p_effect->i_nb_chans] )
 181             p_buffs = p_s16_buff;
 182
 183     }
 184     fft_perform( p_buffer1, p_output, p_state);
 185     for( i = 0; i< FFT_BUFFER_SIZE ; i++ )
 186         p_dest[i] = p_output[i] *  ( 2 ^ 16 ) / ( ( FFT_BUFFER_SIZE / 2 * 32768 ) ^ 2 );
 187
 188     /* Compute the horizontal position of the first band */
 189     i_band_width = floor( p_effect->i_width / i_nb_bands);
 190     i_start = ( p_effect->i_width - i_band_width * i_nb_bands ) / 2;
 191
 192     for ( i = 0 ; i < i_nb_bands ;i++)
 193     {
 194         /* We search the maximum on one scale */
 195         for( j = xscale[i], y = 0; j< xscale[ i + 1 ]; j++ )
 196         {
 197             if ( p_dest[j] > y )
 198                  y = p_dest[j];
 199         }
 200         /* Calculate the height of the bar */
 201         if( y != 0 )
 202         {
 203             height[i] = log( y ) * 30;
 204             if( height[i] > 380 )
 205                 height[i] = 380;
 206         }
 207         else
 208             height[ i ] = 0;
 209
 210         /* Draw the bar now */
 211
 212         if( height[i] > peaks[i] )
 213         {
 214             peaks[i] = height[i];
 215         }
 216         else if( peaks[i] > 0 )
 217         {
 218             peaks[i] -= PEAK_SPEED;
 219             if( peaks[i] < height[i] )
 220             {
 221                 peaks[i] = height[i];
 222             }
 223             if( peaks[i] < 0 )
 224             {
 225                 peaks[i] = 0;
 226             }
 227         }
 228
 229         /* Decrease the bars if needed */
 230         if( height[i] <= prev_heights[i] - BAR_DECREASE_SPEED )
 231         {
 232             height[i] = prev_heights[i];
 233             height[i] -= BAR_DECREASE_SPEED;
 234         }
 235         prev_heights[i] = height[i];
 236
 237         if( peaks[i] > 0 && i_peak )
 238         {
 239             if( peaks[i] >= p_effect->i_height )
 240                 peaks[i] = p_effect->i_height - 2;
 241             i_line = peaks[i];
 242
 243             for( j = 0; j < i_band_width - 1; j++ )
 244             {
 245                for( k = 0; k < 3; k ++ )
 246                {
 247                    /* Draw the peak */
 248                    *(p_picture->p[0].p_pixels +
 249                     ( p_effect->i_height - i_line -1 -k ) *
 250                      p_picture->p[0].i_pitch +
 251                      ( i_start + i_band_width*i + j ) )
 252                                     = 0xff;
 253
 254                    *(p_picture->p[1].p_pixels +
 255                     ( ( p_effect->i_height - i_line ) / 2 - 1 -k/2 ) *
 256                      p_picture->p[1].i_pitch +
 257                      ( ( i_start + i_band_width * i + j ) /2  ) )
 258                                     = 0x00;
 259
 260                    if( i_line + k - 0x0f > 0 )
 261                    {
 262                        if ( i_line + k - 0x0f < 0xff )
 263                            *(p_picture->p[2].p_pixels  +
 264                             ( ( p_effect->i_height - i_line ) / 2 - 1 -k/2 ) *
 265                              p_picture->p[2].i_pitch +
 266                              ( ( i_start + i_band_width * i + j ) /2  ) )
 267                                     = ( i_line + k ) - 0x0f;
 268                        else
 269                            *(p_picture->p[2].p_pixels  +
 270                             ( ( p_effect->i_height - i_line ) / 2 - 1 -k/2 ) *
 271                              p_picture->p[2].i_pitch +
 272                              ( ( i_start + i_band_width * i + j ) /2  ) )
 273                                     = 0xff;
 274                    }
 275                    else
 276                    {
 277                         *(p_picture->p[2].p_pixels  +
 278                          ( ( p_effect->i_height - i_line ) / 2 - 1 -k/2 ) *
 279                          p_picture->p[2].i_pitch +
 280                          ( ( i_start + i_band_width * i + j ) /2  ) )
 281                                = 0x10 ;
 282                    }
 283                }
 284             }
 285         }
 286
 287         if(height[i] > p_effect->i_height)
 288             height[i] = floor(p_effect->i_height );
 289
 290         for( i_line = 0; i_line < height[i]; i_line++ )
 291         {
 292             for( j = 0 ; j < i_band_width - 1; j++)
 293             {
 294                *(p_picture->p[0].p_pixels +
 295                  (p_effect->i_height - i_line - 1) *
 296                   p_picture->p[0].i_pitch +
 297                   ( i_start + i_band_width*i + j ) ) = 0xff;
 298
 299                *(p_picture->p[1].p_pixels +
 300                  ( ( p_effect->i_height - i_line ) / 2 - 1) *
 301                  p_picture->p[1].i_pitch +
 302                  ( ( i_start + i_band_width * i + j ) /2  ) ) = 0x00;
 303
 304                if( i_line - 0x0f > 0 )
 305                {
 306                     if( i_line - 0x0f < 0xff )
 307                          *(p_picture->p[2].p_pixels  +
 308                            ( ( p_effect->i_height - i_line ) / 2 - 1) *
 309                            p_picture->p[2].i_pitch +
 310                            ( ( i_start + i_band_width * i + j ) /2  ) ) =
 311                                i_line - 0x0f;
 312                     else
 313                          *(p_picture->p[2].p_pixels  +
 314                            ( ( p_effect->i_height - i_line ) / 2  - 1) *
 315                            p_picture->p[2].i_pitch +
 316                            ( ( i_start + i_band_width * i + j ) /2  ) ) =
 317                                        0xff;
 318                }
 319                else
 320                {
 321                     *(p_picture->p[2].p_pixels  +
 322                       ( ( p_effect->i_height - i_line ) / 2  - 1) *
 323                       p_picture->p[2].i_pitch +
 324                       ( ( i_start + i_band_width * i + j ) /2  ) ) =
 325                             0x10;
 326                }
 327             }
 328         }
 329     }
 330
 331     fft_close( p_state );
 332
 333     free( height );
 334
 335     return 0;
 336 }
 337
 338
 339 /*****************************************************************************
 340  * spectrometer_Run: derivative spectrum analysis
 341  *****************************************************************************/
 342 int spectrometer_Run(visual_effect_t * p_effect, vlc_object_t *p_aout,
 343                      const block_t * p_buffer , picture_t * p_picture)
 344 {
 345 #define Y(R,G,B) ((uint8_t)( (R * .299) + (G * .587) + (B * .114) ))
 346 #define U(R,G,B) ((uint8_t)( (R * -.169) + (G * -.332) + (B * .500) + 128 ))
 347 #define V(R,G,B) ((uint8_t)( (R * .500) + (G * -.419) + (B * -.0813) + 128 ))
 348     float p_output[FFT_BUFFER_SIZE];  /* Raw FFT Result  */
 349     int *height;                      /* Bar heights */
 350     int *peaks;                       /* Peaks */
 351     int i_80_bands;                   /* number of bands : 80 if true else 20 */
 352     int i_nb_bands;                   /* number of bands : 80 or 20 */
 353     int i_band_width;                 /* width of bands */
 354     int i_separ;                      /* Should we let blanks ? */
 355     int i_amp;                        /* Vertical amplification */
 356     int i_peak;                       /* Should we draw peaks ? */
 357
 358     int i_original;          /* original spectrum graphic routine */
 359     int i_rad;               /* radius of circle of base of bands */
 360     int i_sections;          /* sections of spectranalysis */
 361     int i_extra_width;       /* extra width on peak */
 362     int i_peak_height;       /* height of peak */
 363     int c;                   /* sentinel container of total spectral sections */
 364     double band_sep_angle;   /* angled separation between beginning of each band */
 365     double section_sep_angle;/* "   "    '     "    '    "     "    spectrum section */
 366     int max_band_length;     /* try not to go out of screen */
 367     int i_show_base;         /* Should we draw base of circle ? */
 368     int i_show_bands;        /* Should we draw bands ? */
 369     //int i_invert_bands;      /* do the bands point inward ? */
 370     double a;                /* for various misc angle situations in radians */
 371     int x,y,xx,yy;           /* various misc x/y */
 372     char color1;             /* V slide on a YUV color cube */
 373     //char color2;             /* U slide.. ?  color2 fade color ? */
 374
 375     /* Horizontal scale for 20-band equalizer */
 376     const int xscale1[]={0,1,2,3,4,5,6,7,8,11,15,20,27,
 377                         36,47,62,82,107,141,184,255};
 378
 379     /* Horizontal scale for 80-band equalizer */
 380     const int xscale2[] =
 381     {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,
 382      19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,
 383      35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,
 384      52,53,54,55,56,57,58,59,61,63,67,72,77,82,87,93,99,105,
 385      110,115,121,130,141,152,163,174,185,200,255};
 386     const int *xscale;
 387     const double y_scale =  3.60673760222;  /* (log 256) */
 388
 389     fft_state *p_state;                 /* internal FFT data */
 390
 391     int i , j , k;
 392     int i_line;
 393     int16_t p_dest[FFT_BUFFER_SIZE];      /* Adapted FFT result */
 394     int16_t p_buffer1[FFT_BUFFER_SIZE];   /* Buffer on which we perform
 395                                              the FFT (first channel) */
 396     float *p_buffl =                     /* Original buffer */
 397             (float*)p_buffer->p_buffer;
 398
 399     int16_t  *p_buffs;                    /* int16_t converted buffer */
 400     int16_t  *p_s16_buff;                /* int16_t converted buffer */
 401
 402     i_line = 0;
 403
 404     p_s16_buff = malloc( p_buffer->i_nb_samples * p_effect->i_nb_chans * sizeof(int16_t) );
 405     if( !p_s16_buff )
 406         return -1;
 407
 408     p_buffs = p_s16_buff;
 409     i_original     = config_GetInt ( p_aout, "spect-show-original" );
 410     i_80_bands     = config_GetInt ( p_aout, "spect-80-bands" );
 411     i_separ        = config_GetInt ( p_aout, "spect-separ" );
 412     i_amp          = config_GetInt ( p_aout, "spect-amp" );
 413     i_peak         = config_GetInt ( p_aout, "spect-show-peaks" );
 414     i_show_base    = config_GetInt ( p_aout, "spect-show-base" );
 415     i_show_bands   = config_GetInt ( p_aout, "spect-show-bands" );
 416     i_rad          = config_GetInt ( p_aout, "spect-radius" );
 417     i_sections     = config_GetInt ( p_aout, "spect-sections" );
 418     i_extra_width  = config_GetInt ( p_aout, "spect-peak-width" );
 419     i_peak_height  = config_GetInt ( p_aout, "spect-peak-height" );
 420     color1         = config_GetInt ( p_aout, "spect-color" );
 421
 422     if( i_80_bands != 0)
 423     {
 424         xscale = xscale2;
 425         i_nb_bands = 80;
 426     }
 427     else
 428     {
 429         xscale = xscale1;
 430         i_nb_bands = 20;
 431     }
 432
 433     if( !p_effect->p_data )
 434     {
 435         p_effect->p_data=(void *)malloc( 80 * sizeof(int) );
 436         if( !p_effect->p_data )
 437         {
 438             free( p_s16_buff );
 439             return -1;
 440         }
 441         peaks = (int *)p_effect->p_data;
 442         for( i = 0 ; i < i_nb_bands ; i++ )
 443         {
 444            peaks[i] = 0;
 445         }
 446     }
 447     else
 448     {
 449         peaks =(int *)p_effect->p_data;
 450     }
 451
 452     height = (int *)malloc( i_nb_bands * sizeof(int) );
 453     if( !height)
 454     {
 455         free( p_effect->p_data );
 456         free( p_s16_buff );
 457         return -1;
 458     }
 459
 460     /* Convert the buffer to int16_t  */
 461     /* Pasted from float32tos16.c */
 462     for (i = p_buffer->i_nb_samples * p_effect->i_nb_chans; i--; )
 463     {
 464         union { float f; int32_t i; } u;
 465         u.f = *p_buffl + 384.0;
 466         if(u.i >  0x43c07fff ) * p_buffs = 32767;
 467         else if ( u.i < 0x43bf8000 ) *p_buffs = -32768;
 468         else *p_buffs = u.i - 0x43c00000;
 469
 470         p_buffl++ ; p_buffs++ ;
 471     }
 472     p_state  = visual_fft_init();
 473     if( !p_state)
 474     {
 475         msg_Err(p_aout,"unable to initialize FFT transform");
 476         free( height );
 477         free( p_effect->p_data );
 478         free( p_s16_buff );
 479         return -1;
 480     }
 481     p_buffs = p_s16_buff;
 482     for ( i = 0 ; i < FFT_BUFFER_SIZE; i++)
 483     {
 484         p_output[i]    = 0;
 485         p_buffer1[i] = *p_buffs;
 486
 487         p_buffs += p_effect->i_nb_chans;
 488         if( p_buffs >= &p_s16_buff[p_buffer->i_nb_samples * p_effect->i_nb_chans] )
 489             p_buffs = p_s16_buff;
 490     }
 491     fft_perform( p_buffer1, p_output, p_state);
 492     for(i = 0; i < FFT_BUFFER_SIZE; i++)
 493     {
 494         int sqrti = sqrt(p_output[i]);
 495         p_dest[i] = sqrti >> 8;
 496     }
 497
 498     i_nb_bands *= i_sections;
 499
 500     for ( i = 0 ; i< i_nb_bands/i_sections ;i++)
 501     {
 502         /* We search the maximum on one scale */
 503         for( j = xscale[i] , y=0 ; j< xscale[ i + 1 ] ; j++ )
 504         {
 505             if ( p_dest[j] > y )
 506                  y = p_dest[j];
 507         }
 508         /* Calculate the height of the bar */
 509         y >>=7;/* remove some noise */
 510         if( y != 0)
 511         {
 512             int logy = log(y);
 513             height[i] = logy * y_scale;
 514             if(height[i] > 150)
 515                 height[i] = 150;
 516         }
 517         else
 518         {
 519             height[i] = 0 ;
 520         }
 521
 522         /* Draw the bar now */
 523         i_band_width = floor( p_effect->i_width / (i_nb_bands/i_sections)) ;
 524
 525         if( i_amp * height[i] > peaks[i])
 526         {
 527             peaks[i] = i_amp * height[i];
 528         }
 529         else if (peaks[i] > 0 )
 530         {
 531             peaks[i] -= PEAK_SPEED;
 532             if( peaks[i] < i_amp * height[i] )
 533             {
 534                 peaks[i] = i_amp * height[i];
 535             }
 536             if( peaks[i] < 0 )
 537             {
 538                 peaks[i] = 0;
 539             }
 540         }
 541
 542         if( i_original != 0 )
 543         {
 544         if( peaks[i] > 0 && i_peak )
 545         {
 546             if( peaks[i] >= p_effect->i_height )
 547                 peaks[i] = p_effect->i_height - 2;
 548             i_line = peaks[i];
 549
 550             for( j = 0 ; j< i_band_width - i_separ; j++)
 551             {
 552                for( k = 0 ; k< 3 ; k ++)
 553                {
 554                    //* Draw the peak
 555                      *(p_picture->p[0].p_pixels +
 556                     (p_effect->i_height - i_line -1 -k ) *
 557                      p_picture->p[0].i_pitch + (i_band_width*i +j) )
 558                                     = 0xff;
 559
 560                     *(p_picture->p[1].p_pixels +
 561                      ( ( p_effect->i_height - i_line ) / 2 -1 -k/2 ) *
 562                      p_picture->p[1].i_pitch +
 563                     ( ( i_band_width * i + j ) /2  ) )
 564                                     = 0x00;
 565
 566                    if( 0x04 * (i_line + k ) - 0x0f > 0 )
 567                    {
 568                        if ( 0x04 * (i_line + k ) -0x0f < 0xff)
 569                            *(p_picture->p[2].p_pixels  +
 570                             ( ( p_effect->i_height - i_line ) / 2 - 1 -k/2 ) *
 571                              p_picture->p[2].i_pitch +
 572                              ( ( i_band_width * i + j ) /2  ) )
 573                                     = ( 0x04 * ( i_line + k ) ) -0x0f ;
 574                        else
 575                            *(p_picture->p[2].p_pixels  +
 576                             ( ( p_effect->i_height - i_line ) / 2 - 1 -k/2 ) *
 577                              p_picture->p[2].i_pitch +
 578                              ( ( i_band_width * i + j ) /2  ) )
 579                                     = 0xff;
 580                    }
 581                    else
 582                    {
 583                         *(p_picture->p[2].p_pixels  +
 584                          ( ( p_effect->i_height - i_line ) / 2 - 1 -k/2 ) *
 585                          p_picture->p[2].i_pitch +
 586                          ( ( i_band_width * i + j ) /2  ) )
 587                                = 0x10 ;
 588                    }
 589                }
 590             }
 591         }
 592         if(height[i] * i_amp > p_effect->i_height)
 593             height[i] = floor(p_effect->i_height / i_amp );
 594
 595         for(i_line = 0 ; i_line < i_amp * height[i]; i_line ++ )
 596         {
 597             for( j = 0 ; j< i_band_width - i_separ ; j++)
 598             {
 599                *(p_picture->p[0].p_pixels +
 600                  (p_effect->i_height - i_line -1) *
 601                   p_picture->p[0].i_pitch + (i_band_width*i +j) ) = 0xff;
 602
 603                 *(p_picture->p[1].p_pixels +
 604                  ( ( p_effect->i_height - i_line ) / 2 -1) *
 605                  p_picture->p[1].i_pitch +
 606                  ( ( i_band_width * i + j ) /2  ) ) = 0x00;
 607
 608                if( 0x04 * i_line - 0x0f > 0 )
 609                {
 610                     if( 0x04 * i_line - 0x0f < 0xff )
 611                          *(p_picture->p[2].p_pixels  +
 612                           ( ( p_effect->i_height - i_line ) / 2 - 1) *
 613                            p_picture->p[2].i_pitch +
 614                            ( ( i_band_width * i + j ) /2  ) ) =
 615                                ( 0x04 * i_line) -0x0f ;
 616                     else
 617                          *(p_picture->p[2].p_pixels  +
 618                           ( ( p_effect->i_height - i_line ) / 2 - 1) *
 619                            p_picture->p[2].i_pitch +
 620                            ( ( i_band_width * i + j ) /2  ) ) =
 621                                        0xff;
 622                }
 623                else
 624                {
 625                     *(p_picture->p[2].p_pixels  +
 626                      ( ( p_effect->i_height - i_line ) / 2 - 1) *
 627                      p_picture->p[2].i_pitch +
 628                      ( ( i_band_width * i + j ) /2  ) ) =
 629                             0x10 ;
 630                }
 631             }
 632         }
 633         }
 634     }
 635
 636     band_sep_angle = 360.0 / i_nb_bands;
 637     section_sep_angle = 360.0 / i_sections;
 638     if( i_peak_height < 1 )
 639         i_peak_height = 1;
 640     max_band_length = p_effect->i_height / 2 - ( i_rad + i_peak_height + 1 );
 641
 642     i_band_width = floor( 360 / i_nb_bands - i_separ );
 643     if( i_band_width < 1 )
 644         i_band_width = 1;
 645
 646     for( c = 0 ; c < i_sections ; c++ )
 647     for( i = 0 ; i < (i_nb_bands / i_sections) ; i++ )
 648     {
 649         /* DO A PEAK */
 650         if( peaks[i] > 0 && i_peak )
 651         {
 652             if( peaks[i] >= p_effect->i_height )
 653                 peaks[i] = p_effect->i_height - 2;
 654             i_line = peaks[i];
 655
 656             /* circular line pattern(so color blend is more visible) */
 657             for( j = 0 ; j < i_peak_height ; j++ )
 658             {
 659                 //x = p_picture->p[0].i_pitch / 2;
 660                 x = p_effect->i_width / 2;
 661                 y = p_effect->i_height / 2;
 662                 xx = x;
 663                 yy = y;
 664                 for( k = 0 ; k < (i_band_width + i_extra_width) ; k++ )
 665                 {
 666                     x = xx;
 667                     y = yy;
 668                     a = ( (i+1) * band_sep_angle + section_sep_angle * (c+1) + k )
 669                         * 3.141592 / 180.0;
 670                     x += (double)( cos(a) * (double)( i_line + j + i_rad ) );
 671                     y += (double)( -sin(a) * (double)( i_line + j + i_rad ) );
 672
 673                     *(p_picture->p[0].p_pixels + x + y * p_picture->p[0].i_pitch
 674                     ) = 255;/* Y(R,G,B); */
 675
 676                     x /= 2;
 677                     y /= 2;
 678
 679                     *(p_picture->p[1].p_pixels + x + y * p_picture->p[1].i_pitch
 680                     ) = 0;/* U(R,G,B); */
 681
 682                     if( 0x04 * (i_line + k ) - 0x0f > 0 )
 683                     {
 684                         if ( 0x04 * (i_line + k ) -0x0f < 0xff)
 685                             *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 686                             ) = ( 0x04 * ( i_line + k ) ) -(color1-1);/* -V(R,G,B); */
 687                         else
 688                             *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 689                             ) = 255;/* V(R,G,B); */
 690                     }
 691                     else
 692                     {
 693                         *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 694                         ) = color1;/* V(R,G,B); */
 695                     }
 696                 }
 697             }
 698         }
 699
 700         if( (height[i] * i_amp) > p_effect->i_height )
 701             height[i] = floor( p_effect->i_height / i_amp );
 702
 703         /* DO BASE OF BAND (mostly makes a circle) */
 704         if( i_show_base != 0 )
 705         {
 706             //x = p_picture->p[0].i_pitch / 2;
 707             x = p_effect->i_width / 2;
 708             y = p_effect->i_height / 2;
 709
 710             a =  ( (i+1) * band_sep_angle + section_sep_angle * (c+1) )
 711                 * 3.141592 / 180.0;
 712             x += (double)( cos(a) * (double)i_rad );/* newb-forceful casting */
 713             y += (double)( -sin(a) * (double)i_rad );
 714
 715             *(p_picture->p[0].p_pixels + x + y * p_picture->p[0].i_pitch
 716             ) = 255;/* Y(R,G,B); */
 717
 718             x /= 2;
 719             y /= 2;
 720
 721             *(p_picture->p[1].p_pixels + x + y * p_picture->p[1].i_pitch
 722             ) = 0;/* U(R,G,B); */
 723
 724             if( 0x04 * i_line - 0x0f > 0 )
 725             {
 726                 if( 0x04 * i_line -0x0f < 0xff)
 727                     *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 728                     ) = ( 0x04 * i_line) -(color1-1);/* -V(R,G,B); */
 729                 else
 730                     *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 731                     ) = 255;/* V(R,G,B); */
 732             }
 733             else
 734             {
 735                 *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 736                 ) = color1;/* V(R,G,B); */
 737             }
 738         }
 739
 740         /* DO A BAND */
 741         if( i_show_bands != 0 )
 742         for( j = 0 ; j < i_band_width ; j++ )
 743         {
 744             x = p_effect->i_width / 2;
 745             y = p_effect->i_height / 2;
 746             xx = x;
 747             yy = y;
 748             a = ( (i+1) * band_sep_angle + section_sep_angle * (c+1) + j )
 749                 * 3.141592/180.0;
 750
 751             for( k = (i_rad+1) ; k < max_band_length ; k++ )
 752             {
 753                 if( (k-i_rad) > height[i] )
 754                     break;/* uhh.. */
 755
 756                 x = xx;
 757                 y = yy;
 758                 x += (double)( cos(a) * (double)k );/* newbed! */
 759                 y += (double)( -sin(a) * (double)k );
 760
 761                 *(p_picture->p[0].p_pixels + x + y * p_picture->p[0].i_pitch
 762                 ) = 255;
 763
 764                 x /= 2;
 765                 y /= 2;
 766
 767                 *(p_picture->p[1].p_pixels + x + y * p_picture->p[1].i_pitch
 768                 ) = 0;
 769
 770                 if( 0x04 * i_line - 0x0f > 0 )
 771                 {
 772                     if ( 0x04 * i_line -0x0f < 0xff)
 773                         *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 774                         ) = ( 0x04 * i_line) -(color1-1);
 775                     else
 776                         *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 777                         ) = 255;
 778                 }
 779                 else
 780                 {
 781                     *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 782                     ) = color1;
 783                 }
 784             }
 785         }
 786     }
 787
 788     fft_close( p_state );
 789
 790     free( p_s16_buff );
 791     free( height );
 792
 793     return 0;
 794 }
 795
 796
 797 /*****************************************************************************
 798  * scope_Run: scope effect
 799  *****************************************************************************/
 800 int scope_Run(visual_effect_t * p_effect, vlc_object_t *p_aout,
 801               const block_t * p_buffer , picture_t * p_picture)
 802 {
 803     VLC_UNUSED(p_aout);
 804
 805     int i_index;
 806     float *p_sample ;
 807     uint8_t *ppp_area[2][3];
 808
 809     for( i_index = 0 ; i_index < 2 ; i_index++ )
 810     {
 811         for( int j = 0 ; j < 3 ; j++ )
 812         {
 813             ppp_area[i_index][j] =
 814                 p_picture->p[j].p_pixels + i_index * p_picture->p[j].i_lines
 815                 / 2 * p_picture->p[j].i_pitch;
 816         }
 817     }
 818
 819     for( i_index = 0, p_sample = (float *)p_buffer->p_buffer;
 820             i_index < __MIN( p_effect->i_width, (int)p_buffer->i_nb_samples );
 821             i_index++ )
 822     {
 823         uint8_t i_value;
 824
 825         /* Left channel */
 826         i_value =  p_sample[p_effect->i_idx_left] * 127;
 827         *(ppp_area[0][0]
 828                 + p_picture->p[0].i_pitch * i_index / p_effect->i_width
 829                 + p_picture->p[0].i_lines * i_value / 512
 830                 * p_picture->p[0].i_pitch) = 0xbf;
 831         *(ppp_area[0][1]
 832                 + p_picture->p[1].i_pitch * i_index / p_effect->i_width
 833                 + p_picture->p[1].i_lines * i_value / 512
 834                 * p_picture->p[1].i_pitch) = 0xff;
 835
 836
 837         /* Right channel */
 838         i_value = p_sample[p_effect->i_idx_right] * 127;
 839         *(ppp_area[1][0]
 840                 + p_picture->p[0].i_pitch * i_index / p_effect->i_width
 841                 + p_picture->p[0].i_lines * i_value / 512
 842                 * p_picture->p[0].i_pitch) = 0x9f;
 843         *(ppp_area[1][2]
 844                 + p_picture->p[2].i_pitch * i_index / p_effect->i_width
 845                 + p_picture->p[2].i_lines * i_value / 512
 846                 * p_picture->p[2].i_pitch) = 0xdd;
 847
 848         p_sample += p_effect->i_nb_chans;
 849     }
 850     return 0;
 851 }
 852
 853
 854 /*****************************************************************************
 855  * vuMeter_Run: vu meter effect
 856  *****************************************************************************/
 857 int vuMeter_Run(visual_effect_t * p_effect, vlc_object_t *p_aout,
 858                 const block_t * p_buffer , picture_t * p_picture)
 859 {
 860     VLC_UNUSED(p_aout);
 861     int j;
 862     float i_value_l = 0;
 863     float i_value_r = 0;
 864
 865     /* Compute the peack values */
 866     for ( unsigned i = 0 ; i < p_buffer->i_nb_samples; i++ )
 867     {
 868         const float *p_sample = (float *)p_buffer->p_buffer;
 869         float ch;
 870
 871         ch = p_sample[p_effect->i_idx_left] * 256;
 872         if (ch > i_value_l)
 873             i_value_l = ch;
 874
 875         ch = p_sample[p_effect->i_idx_right] * 256;
 876         if (ch > i_value_r)
 877             i_value_r = ch;
 878
 879         p_sample += p_effect->i_nb_chans;
 880     }
 881
 882     i_value_l = abs(i_value_l);
 883     i_value_r = abs(i_value_r);
 884
 885     /* Stay under maximum value admited */
 886     if ( i_value_l > 200 * M_PI_2 )
 887         i_value_l = 200 * M_PI_2;
 888     if ( i_value_r > 200 * M_PI_2 )
 889         i_value_r = 200 * M_PI_2;
 890
 891     float *i_value;
 892
 893     if( !p_effect->p_data )
 894     {
 895         /* Allocate memory to save hand positions */
 896         p_effect->p_data = (void *)malloc( 2 * sizeof(float) );
 897         i_value = p_effect->p_data;
 898         i_value[0] = i_value_l;
 899         i_value[1] = i_value_r;
 900     }
 901     else
 902     {
 903         /* Make the hands go down slowly if the current values are slower
 904            than the previous */
 905         i_value = p_effect->p_data;
 906
 907         if ( i_value_l > i_value[0] - 6 )
 908             i_value[0] = i_value_l;
 909         else
 910             i_value[0] = i_value[0] - 6;
 911
 912         if ( i_value_r > i_value[1] - 6 )
 913             i_value[1] = i_value_r;
 914         else
 915             i_value[1] = i_value[1] - 6;
 916     }
 917
 918     int x, y, k;
 919     float teta;
 920     float teta_grad;
 921
 922     for ( j = 0; j < 2; j++ )
 923     {
 924         /* Draw the two scales */
 925         k = 0;
 926         teta_grad = GRAD_ANGLE_MIN;
 927         for ( teta = -M_PI_4; teta <= M_PI_4; teta = teta + 0.003 )
 928         {
 929             for ( unsigned i = 140; i <= 150; i++ )
 930             {
 931                 y = i * cos(teta) + 20;
 932                 x = i * sin(teta) + 150 + 240 * j;
 933                 /* Compute the last color for the gradation */
 934                 if (teta >= teta_grad + GRAD_INCR && teta_grad <= GRAD_ANGLE_MAX)
 935                 {
 936                     teta_grad = teta_grad + GRAD_INCR;
 937                     k = k + 5;
 938                 }
 939                 *(p_picture->p[0].p_pixels +
 940                         (p_picture->p[0].i_lines - y - 1 ) * p_picture->p[0].i_pitch
 941                         + x ) = 0x45;
 942                 *(p_picture->p[1].p_pixels +
 943                         (p_picture->p[1].i_lines - y / 2 - 1 ) * p_picture->p[1].i_pitch
 944                         + x / 2 ) = 0x0;
 945                 *(p_picture->p[2].p_pixels +
 946                         (p_picture->p[2].i_lines - y / 2 - 1 ) * p_picture->p[2].i_pitch
 947                         + x / 2 ) = 0x4D + k;
 948             }
 949         }
 950
 951         /* Draw the two hands */
 952         teta = (float)i_value[j] / 200 - M_PI_4;
 953         for ( int i = 0; i <= 150; i++ )
 954         {
 955             y = i * cos(teta) + 20;
 956             x = i * sin(teta) + 150 + 240 * j;
 957             *(p_picture->p[0].p_pixels +
 958                     (p_picture->p[0].i_lines - y - 1 ) * p_picture->p[0].i_pitch
 959                     + x ) = 0xAD;
 960             *(p_picture->p[1].p_pixels +
 961                     (p_picture->p[1].i_lines - y / 2 - 1 ) * p_picture->p[1].i_pitch
 962                     + x / 2 ) = 0xFC;
 963             *(p_picture->p[2].p_pixels +
 964                     (p_picture->p[2].i_lines - y / 2 - 1 ) * p_picture->p[2].i_pitch
 965                     + x / 2 ) = 0xAC;
 966         }
 967
 968         /* Draw the hand bases */
 969         for ( teta = -M_PI_2; teta <= M_PI_2 + 0.01; teta = teta + 0.003 )
 970         {
 971             for ( int i = 0; i < 10; i++ )
 972             {
 973                 y = i * cos(teta) + 20;
 974                 x = i * sin(teta) + 150 + 240 * j;
 975                 *(p_picture->p[0].p_pixels +
 976                         (p_picture->p[0].i_lines - y - 1 ) * p_picture->p[0].i_pitch
 977                         + x ) = 0xFF;
 978                 *(p_picture->p[1].p_pixels +
 979                         (p_picture->p[1].i_lines - y / 2 - 1 ) * p_picture->p[1].i_pitch
 980                         + x / 2 ) = 0x80;
 981                 *(p_picture->p[2].p_pixels +
 982                         (p_picture->p[2].i_lines - y / 2 - 1 ) * p_picture->p[2].i_pitch
 983                         + x / 2 ) = 0x80;
 984             }
 985         }
 986
 987     }
 988
 989     return 0;
 990 }