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 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
  43 #define GRAD_ANGLE_MIN 0.2
  44 #define GRAD_ANGLE_MAX 0.5
  45 #define GRAD_INCR 0.01
  46
  47 /*****************************************************************************
  48  * dummy_Run
  49  *****************************************************************************/
  50 int dummy_Run( visual_effect_t * p_effect, aout_instance_t *p_aout,
  51                aout_buffer_t * p_buffer , picture_t * p_picture)
  52 {
  53     VLC_UNUSED(p_effect); VLC_UNUSED(p_aout); VLC_UNUSED(p_buffer);
  54     VLC_UNUSED(p_picture);
  55     return 0;
  56 }
  57
  58 /*****************************************************************************
  59  * spectrum_Run: spectrum analyser
  60  *****************************************************************************/
  61 int spectrum_Run(visual_effect_t * p_effect, aout_instance_t *p_aout,
  62                  aout_buffer_t * p_buffer , picture_t * p_picture)
  63 {
  64     float p_output[FFT_BUFFER_SIZE];  /* Raw FFT Result  */
  65     int *height;                      /* Bar heights */
  66     int *peaks;                       /* Peaks */
  67     int i_nb_bands;                   /* number of bands */
  68     int i_band_width;                 /* width of bands */
  69     int i_separ;                      /* Should we let blanks ? */
  70     int i_amp;                        /* Vertical amplification */
  71     int i_peak;                       /* Should we draw peaks ? */
  72
  73     /* Horizontal scale for 20-band equalizer */
  74     const int xscale1[]={0,1,2,3,4,5,6,7,8,11,15,20,27,
  75                         36,47,62,82,107,141,184,255};
  76
  77     /* Horizontal scale for 80-band equalizer */
  78     const int xscale2[] =
  79     {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,
  80      19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,
  81      35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,
  82      52,53,54,55,56,57,58,59,61,63,67,72,77,82,87,93,99,105,
  83      110,115,121,130,141,152,163,174,185,200,255};
  84     const int *xscale;
  85     const double y_scale =  3.60673760222;  /* (log 256) */
  86
  87     fft_state *p_state;                 /* internal FFT data */
  88
  89     int i , j , y , k;
  90     int i_line;
  91     int16_t p_dest[FFT_BUFFER_SIZE];      /* Adapted FFT result */
  92     int16_t p_buffer1[FFT_BUFFER_SIZE];   /* Buffer on which we perform
  93                                              the FFT (first channel) */
  94
  95     float *p_buffl =                     /* Original buffer */
  96             (float*)p_buffer->p_buffer;
  97
  98     int16_t  *p_buffs;                    /* int16_t converted buffer */
  99     int16_t  *p_s16_buff;                 /* int16_t converted buffer */
 100
 101     p_s16_buff = malloc(
 102               p_buffer->i_nb_samples * p_effect->i_nb_chans * sizeof(int16_t));
 103
 104     if( !p_s16_buff )
 105         return -1;
 106
 107     p_buffs = p_s16_buff;
 108     i_nb_bands = config_GetInt ( p_aout, "visual-nbbands" );
 109     i_separ    = config_GetInt( p_aout, "visual-separ" );
 110     i_amp     = config_GetInt ( p_aout, "visual-amp" );
 111     i_peak     = config_GetInt ( p_aout, "visual-peaks" );
 112
 113     if( i_nb_bands == 20)
 114     {
 115         xscale = xscale1;
 116     }
 117     else
 118     {
 119         i_nb_bands = 80;
 120         xscale = xscale2;
 121     }
 122
 123     if( !p_effect->p_data )
 124     {
 125         p_effect->p_data = malloc(i_nb_bands * sizeof(int) );
 126         if( !p_effect->p_data)
 127         {
 128             free( p_s16_buff );
 129             return -1;
 130         }
 131         peaks = (int *)p_effect->p_data;
 132         for( i = 0 ; i < i_nb_bands ; i++)
 133         {
 134            peaks[i] = 0;
 135         }
 136
 137     }
 138     else
 139     {
 140         peaks =(int *)p_effect->p_data;
 141     }
 142
 143
 144     height = malloc( i_nb_bands * sizeof(int) );
 145     if( !height )
 146     {
 147         free( p_s16_buff );
 148         return -1;
 149     }
 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--; )
 153     {
 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;
 159
 160         p_buffl++ ; p_buffs++ ;
 161     }
 162     p_state  = visual_fft_init();
 163     if( !p_state)
 164     {
 165         free( height );
 166         free( p_s16_buff );
 167         msg_Err(p_aout,"unable to initialize FFT transform");
 168         return -1;
 169     }
 170     p_buffs = p_s16_buff;
 171     for ( i = 0 ; i < FFT_BUFFER_SIZE ; i++)
 172     {
 173         p_output[i]    = 0;
 174         p_buffer1[i] = *p_buffs;
 175         p_buffs      = p_buffs + p_effect->i_nb_chans;
 176     }
 177     fft_perform( p_buffer1, p_output, p_state);
 178     for(i= 0; i< FFT_BUFFER_SIZE ; i++ )
 179         p_dest[i] = ( (int) sqrt( p_output [ i ] ) ) >> 8;
 180
 181     for ( i = 0 ; i< i_nb_bands ;i++)
 182     {
 183         /* We search the maximum on one scale */
 184         for( j = xscale[i] , y=0 ; j< xscale[ i + 1 ] ; j++ )
 185         {
 186             if ( p_dest[j] > y )
 187                  y = p_dest[j];
 188         }
 189         /* Calculate the height of the bar */
 190         y >>=7;/* remove some noise */
 191         if( y != 0)
 192         {
 193             height[i] = (int)log(y)* y_scale;
 194                if(height[i] > 150)
 195                   height[i] = 150;
 196         }
 197         else
 198         {
 199             height[i] = 0 ;
 200         }
 201
 202         /* Draw the bar now */
 203         i_band_width = floor( p_effect->i_width / i_nb_bands) ;
 204
 205         if( i_amp * height[i] > peaks[i])
 206         {
 207             peaks[i] = i_amp * height[i];
 208         }
 209         else if (peaks[i] > 0 )
 210         {
 211             peaks[i] -= PEAK_SPEED;
 212             if( peaks[i] < i_amp * height[i] )
 213             {
 214                 peaks[i] = i_amp * height[i];
 215             }
 216             if( peaks[i] < 0 )
 217             {
 218                 peaks[i] = 0;
 219             }
 220         }
 221
 222         if( peaks[i] > 0 && i_peak )
 223         {
 224             if( peaks[i] >= p_effect->i_height )
 225                 peaks[i] = p_effect->i_height - 2;
 226             i_line = peaks[i];
 227
 228             for( j = 0 ; j< i_band_width - i_separ; j++)
 229             {
 230                for( k = 0 ; k< 3 ; k ++)
 231                {
 232                    /* Draw the peak */
 233                      *(p_picture->p[0].p_pixels +
 234                     (p_picture->p[0].i_lines - i_line -1 -k ) *
 235                      p_picture->p[0].i_pitch + (i_band_width*i +j) )
 236                                     = 0xff;
 237
 238                     *(p_picture->p[1].p_pixels +
 239                      (p_picture->p[1].i_lines - i_line /2 -1 -k/2 ) *
 240                      p_picture->p[1].i_pitch +
 241                     ( ( i_band_width * i + j ) /2  ) )
 242                                     = 0x00;
 243
 244                    if( 0x04 * (i_line + k ) - 0x0f > 0 )
 245                    {
 246                        if ( 0x04 * (i_line + k ) -0x0f < 0xff)
 247                            *(p_picture->p[2].p_pixels  +
 248                             (p_picture->p[2].i_lines - i_line /2 - 1 -k/2 ) *
 249                              p_picture->p[2].i_pitch +
 250                              ( ( i_band_width * i + j ) /2  ) )
 251                                     = ( 0x04 * ( i_line + k ) ) -0x0f ;
 252                        else
 253                            *(p_picture->p[2].p_pixels  +
 254                             (p_picture->p[2].i_lines - i_line /2 - 1 -k/2 ) *
 255                              p_picture->p[2].i_pitch +
 256                              ( ( i_band_width * i + j ) /2  ) )
 257                                     = 0xff;
 258                    }
 259                    else
 260                    {
 261                         *(p_picture->p[2].p_pixels  +
 262                          (p_picture->p[2].i_lines - i_line /2 - 1 -k/2 ) *
 263                          p_picture->p[2].i_pitch +
 264                          ( ( i_band_width * i + j ) /2  ) )
 265                                = 0x10 ;
 266                    }
 267                }
 268             }
 269         }
 270
 271         if(height[i] * i_amp > p_effect->i_height)
 272             height[i] = floor(p_effect->i_height / i_amp );
 273
 274         for(i_line = 0 ; i_line < i_amp * height[i]; i_line ++ )
 275         {
 276             for( j = 0 ; j< i_band_width - i_separ ; j++)
 277             {
 278                *(p_picture->p[0].p_pixels +
 279                  (p_picture->p[0].i_lines - i_line -1) *
 280                   p_picture->p[0].i_pitch + (i_band_width*i +j) ) = 0xff;
 281
 282                 *(p_picture->p[1].p_pixels +
 283                  (p_picture->p[1].i_lines - i_line /2 -1) *
 284                  p_picture->p[1].i_pitch +
 285                  ( ( i_band_width * i + j ) /2  ) ) = 0x00;
 286
 287                if( 0x04 * i_line - 0x0f > 0 )
 288                {
 289                     if( 0x04 * i_line - 0x0f < 0xff )
 290                          *(p_picture->p[2].p_pixels  +
 291                           (p_picture->p[2].i_lines - i_line /2 - 1) *
 292                            p_picture->p[2].i_pitch +
 293                            ( ( i_band_width * i + j ) /2  ) ) =
 294                                ( 0x04 * i_line) -0x0f ;
 295                     else
 296                          *(p_picture->p[2].p_pixels  +
 297                           (p_picture->p[2].i_lines - i_line /2 - 1) *
 298                            p_picture->p[2].i_pitch +
 299                            ( ( i_band_width * i + j ) /2  ) ) =
 300                                        0xff;
 301                }
 302                else
 303                {
 304                     *(p_picture->p[2].p_pixels  +
 305                      (p_picture->p[2].i_lines - i_line /2 - 1) *
 306                      p_picture->p[2].i_pitch +
 307                      ( ( i_band_width * i + j ) /2  ) ) =
 308                             0x10 ;
 309                }
 310             }
 311         }
 312     }
 313
 314     fft_close( p_state );
 315
 316     free( p_s16_buff );
 317     free( height );
 318
 319     return 0;
 320 }
 321
 322
 323 /*****************************************************************************
 324  * spectrometer_Run: derivative spectrum analysis
 325  *****************************************************************************/
 326 int spectrometer_Run(visual_effect_t * p_effect, aout_instance_t *p_aout,
 327                  aout_buffer_t * p_buffer , picture_t * p_picture)
 328 {
 329 #define Y(R,G,B) ((uint8_t)( (R * .299) + (G * .587) + (B * .114) ))
 330 #define U(R,G,B) ((uint8_t)( (R * -.169) + (G * -.332) + (B * .500) + 128 ))
 331 #define V(R,G,B) ((uint8_t)( (R * .500) + (G * -.419) + (B * -.0813) + 128 ))
 332     float p_output[FFT_BUFFER_SIZE];  /* Raw FFT Result  */
 333     int *height;                      /* Bar heights */
 334     int *peaks;                       /* Peaks */
 335     int i_nb_bands;                   /* number of bands */
 336     int i_band_width;                 /* width of bands */
 337     int i_separ;                      /* Should we let blanks ? */
 338     int i_amp;                        /* Vertical amplification */
 339     int i_peak;                       /* Should we draw peaks ? */
 340
 341     int i_original;          /* original spectrum graphic routine */
 342     int i_rad;               /* radius of circle of base of bands */
 343     int i_sections;          /* sections of spectranalysis */
 344     int i_extra_width;       /* extra width on peak */
 345     int i_peak_height;       /* height of peak */
 346     int c;                   /* sentinel container of total spectral sections */
 347     double band_sep_angle;   /* angled separation between beginning of each band */
 348     double section_sep_angle;/* "   "    '     "    '    "     "    spectrum section */
 349     int max_band_length;     /* try not to go out of screen */
 350     int i_show_base;         /* Should we draw base of circle ? */
 351     int i_show_bands;        /* Should we draw bands ? */
 352     //int i_invert_bands;      /* do the bands point inward ? */
 353     double a;                /* for various misc angle situations in radians */
 354     int x,y,xx,yy;           /* various misc x/y */
 355     char color1;             /* V slide on a YUV color cube */
 356     //char color2;             /* U slide.. ?  color2 fade color ? */
 357
 358     /* Horizontal scale for 20-band equalizer */
 359     const int xscale1[]={0,1,2,3,4,5,6,7,8,11,15,20,27,
 360                         36,47,62,82,107,141,184,255};
 361
 362     /* Horizontal scale for 80-band equalizer */
 363     const int xscale2[] =
 364     {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,
 365      19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,
 366      35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,
 367      52,53,54,55,56,57,58,59,61,63,67,72,77,82,87,93,99,105,
 368      110,115,121,130,141,152,163,174,185,200,255};
 369     const int *xscale;
 370     const double y_scale =  3.60673760222;  /* (log 256) */
 371
 372     fft_state *p_state;                 /* internal FFT data */
 373
 374     int i , j , k;
 375     int i_line;
 376     int16_t p_dest[FFT_BUFFER_SIZE];      /* Adapted FFT result */
 377     int16_t p_buffer1[FFT_BUFFER_SIZE];   /* Buffer on which we perform
 378                                              the FFT (first channel) */
 379     float *p_buffl =                     /* Original buffer */
 380             (float*)p_buffer->p_buffer;
 381
 382     int16_t  *p_buffs;                    /* int16_t converted buffer */
 383     int16_t  *p_s16_buff = NULL;                /* int16_t converted buffer */
 384
 385     i_line = 0;
 386
 387     p_s16_buff = (int16_t*)malloc(
 388               p_buffer->i_nb_samples * p_effect->i_nb_chans * sizeof(int16_t));
 389
 390     if( !p_s16_buff )
 391         return -1;
 392
 393     p_buffs = p_s16_buff;
 394     i_original     = config_GetInt ( p_aout, "spect-show-original" );
 395     i_nb_bands     = config_GetInt ( p_aout, "spect-nbbands" );
 396     i_separ        = config_GetInt ( p_aout, "spect-separ" );
 397     i_amp          = config_GetInt ( p_aout, "spect-amp" );
 398     i_peak         = config_GetInt ( p_aout, "spect-show-peaks" );
 399     i_show_base    = config_GetInt ( p_aout, "spect-show-base" );
 400     i_show_bands   = config_GetInt ( p_aout, "spect-show-bands" );
 401     i_rad          = config_GetInt ( p_aout, "spect-radius" );
 402     i_sections     = config_GetInt ( p_aout, "spect-sections" );
 403     i_extra_width  = config_GetInt ( p_aout, "spect-peak-width" );
 404     i_peak_height  = config_GetInt ( p_aout, "spect-peak-height" );
 405     color1         = config_GetInt ( p_aout, "spect-color" );
 406
 407     if( i_nb_bands == 20)
 408     {
 409         xscale = xscale1;
 410     }
 411     else
 412     {
 413         if( i_nb_bands > 80 )
 414             i_nb_bands = 80;
 415         xscale = xscale2;
 416     }
 417
 418     if( !p_effect->p_data )
 419     {
 420         p_effect->p_data=(void *)malloc( i_nb_bands * sizeof(int) );
 421         if( !p_effect->p_data )
 422         {
 423             free( p_s16_buff );
 424             return -1;
 425         }
 426         peaks = (int *)p_effect->p_data;
 427         for( i = 0 ; i < i_nb_bands ; i++ )
 428         {
 429            peaks[i] = 0;
 430         }
 431     }
 432     else
 433     {
 434         peaks =(int *)p_effect->p_data;
 435     }
 436
 437     height = (int *)malloc( i_nb_bands * sizeof(int) );
 438     if( !height)
 439     {
 440         free( p_effect->p_data );
 441         free( p_s16_buff );
 442         return -1;
 443     }
 444
 445     /* Convert the buffer to int16_t  */
 446     /* Pasted from float32tos16.c */
 447     for (i = p_buffer->i_nb_samples * p_effect->i_nb_chans; i--; )
 448     {
 449         union { float f; int32_t i; } u;
 450         u.f = *p_buffl + 384.0;
 451         if(u.i >  0x43c07fff ) * p_buffs = 32767;
 452         else if ( u.i < 0x43bf8000 ) *p_buffs = -32768;
 453         else *p_buffs = u.i - 0x43c00000;
 454
 455         p_buffl++ ; p_buffs++ ;
 456     }
 457     p_state  = visual_fft_init();
 458     if( !p_state)
 459     {
 460         msg_Err(p_aout,"unable to initialize FFT transform");
 461         free( height );
 462         free( p_effect->p_data );
 463         free( p_s16_buff );
 464         return -1;
 465     }
 466     p_buffs = p_s16_buff;
 467     for ( i = 0 ; i < FFT_BUFFER_SIZE ; i++)
 468     {
 469         p_output[i]    = 0;
 470         p_buffer1[i] = *p_buffs;
 471         p_buffs      = p_buffs + p_effect->i_nb_chans;
 472     }
 473     fft_perform( p_buffer1, p_output, p_state);
 474     for(i= 0; i< FFT_BUFFER_SIZE ; i++ )
 475         p_dest[i] = ( (int) sqrt( p_output [ i ] ) ) >> 8;
 476
 477     i_nb_bands *= i_sections;
 478
 479     for ( i = 0 ; i< i_nb_bands/i_sections ;i++)
 480     {
 481         /* We search the maximum on one scale */
 482         for( j = xscale[i] , y=0 ; j< xscale[ i + 1 ] ; j++ )
 483         {
 484             if ( p_dest[j] > y )
 485                  y = p_dest[j];
 486         }
 487         /* Calculate the height of the bar */
 488         y >>=7;/* remove some noise */
 489         if( y != 0)
 490         {
 491             height[i] = (int)log(y)* y_scale;
 492                if(height[i] > 150)
 493                   height[i] = 150;
 494         }
 495         else
 496         {
 497             height[i] = 0 ;
 498         }
 499
 500         /* Draw the bar now */
 501         i_band_width = floor( p_effect->i_width / (i_nb_bands/i_sections)) ;
 502
 503         if( i_amp * height[i] > peaks[i])
 504         {
 505             peaks[i] = i_amp * height[i];
 506         }
 507         else if (peaks[i] > 0 )
 508         {
 509             peaks[i] -= PEAK_SPEED;
 510             if( peaks[i] < i_amp * height[i] )
 511             {
 512                 peaks[i] = i_amp * height[i];
 513             }
 514             if( peaks[i] < 0 )
 515             {
 516                 peaks[i] = 0;
 517             }
 518         }
 519
 520         if( i_original != 0 )
 521         {
 522         if( peaks[i] > 0 && i_peak )
 523         {
 524             if( peaks[i] >= p_effect->i_height )
 525                 peaks[i] = p_effect->i_height - 2;
 526             i_line = peaks[i];
 527
 528             for( j = 0 ; j< i_band_width - i_separ; j++)
 529             {
 530                for( k = 0 ; k< 3 ; k ++)
 531                {
 532                    //* Draw the peak
 533                      *(p_picture->p[0].p_pixels +
 534                     (p_picture->p[0].i_lines - i_line -1 -k ) *
 535                      p_picture->p[0].i_pitch + (i_band_width*i +j) )
 536                                     = 0xff;
 537
 538                     *(p_picture->p[1].p_pixels +
 539                      (p_picture->p[1].i_lines - i_line /2 -1 -k/2 ) *
 540                      p_picture->p[1].i_pitch +
 541                     ( ( i_band_width * i + j ) /2  ) )
 542                                     = 0x00;
 543
 544                    if( 0x04 * (i_line + k ) - 0x0f > 0 )
 545                    {
 546                        if ( 0x04 * (i_line + k ) -0x0f < 0xff)
 547                            *(p_picture->p[2].p_pixels  +
 548                             (p_picture->p[2].i_lines - i_line /2 - 1 -k/2 ) *
 549                              p_picture->p[2].i_pitch +
 550                              ( ( i_band_width * i + j ) /2  ) )
 551                                     = ( 0x04 * ( i_line + k ) ) -0x0f ;
 552                        else
 553                            *(p_picture->p[2].p_pixels  +
 554                             (p_picture->p[2].i_lines - i_line /2 - 1 -k/2 ) *
 555                              p_picture->p[2].i_pitch +
 556                              ( ( i_band_width * i + j ) /2  ) )
 557                                     = 0xff;
 558                    }
 559                    else
 560                    {
 561                         *(p_picture->p[2].p_pixels  +
 562                          (p_picture->p[2].i_lines - i_line /2 - 1 -k/2 ) *
 563                          p_picture->p[2].i_pitch +
 564                          ( ( i_band_width * i + j ) /2  ) )
 565                                = 0x10 ;
 566                    }
 567                }
 568             }
 569         }
 570         if(height[i] * i_amp > p_effect->i_height)
 571             height[i] = floor(p_effect->i_height / i_amp );
 572
 573         for(i_line = 0 ; i_line < i_amp * height[i]; i_line ++ )
 574         {
 575             for( j = 0 ; j< i_band_width - i_separ ; j++)
 576             {
 577                *(p_picture->p[0].p_pixels +
 578                  (p_picture->p[0].i_lines - i_line -1) *
 579                   p_picture->p[0].i_pitch + (i_band_width*i +j) ) = 0xff;
 580
 581                 *(p_picture->p[1].p_pixels +
 582                  (p_picture->p[1].i_lines - i_line /2 -1) *
 583                  p_picture->p[1].i_pitch +
 584                  ( ( i_band_width * i + j ) /2  ) ) = 0x00;
 585
 586                if( 0x04 * i_line - 0x0f > 0 )
 587                {
 588                     if( 0x04 * i_line - 0x0f < 0xff )
 589                          *(p_picture->p[2].p_pixels  +
 590                           (p_picture->p[2].i_lines - i_line /2 - 1) *
 591                            p_picture->p[2].i_pitch +
 592                            ( ( i_band_width * i + j ) /2  ) ) =
 593                                ( 0x04 * i_line) -0x0f ;
 594                     else
 595                          *(p_picture->p[2].p_pixels  +
 596                           (p_picture->p[2].i_lines - i_line /2 - 1) *
 597                            p_picture->p[2].i_pitch +
 598                            ( ( i_band_width * i + j ) /2  ) ) =
 599                                        0xff;
 600                }
 601                else
 602                {
 603                     *(p_picture->p[2].p_pixels  +
 604                      (p_picture->p[2].i_lines - i_line /2 - 1) *
 605                      p_picture->p[2].i_pitch +
 606                      ( ( i_band_width * i + j ) /2  ) ) =
 607                             0x10 ;
 608                }
 609             }
 610         }
 611         }
 612     }
 613
 614     band_sep_angle = 360.0 / i_nb_bands;
 615     section_sep_angle = 360.0 / i_sections;
 616     if( i_peak_height < 1 )
 617         i_peak_height = 1;
 618     max_band_length = p_picture->p[0].i_lines / 2 - ( i_rad + i_peak_height + 1 );
 619
 620     i_band_width = floor( 360 / i_nb_bands - i_separ );
 621     if( i_band_width < 1 )
 622         i_band_width = 1;
 623
 624     for( c = 0 ; c < i_sections ; c++ )
 625     for( i = 0 ; i < (i_nb_bands / i_sections) ; i++ )
 626     {
 627         /* DO A PEAK */
 628         if( peaks[i] > 0 && i_peak )
 629         {
 630             if( peaks[i] >= p_effect->i_height )
 631                 peaks[i] = p_effect->i_height - 2;
 632             i_line = peaks[i];
 633
 634             /* circular line pattern(so color blend is more visible) */
 635             for( j = 0 ; j < i_peak_height ; j++ )
 636             {
 637                 x = p_picture->p[0].i_pitch / 2;
 638                 y = p_picture->p[0].i_lines / 2;
 639                 xx = x;
 640                 yy = y;
 641                 for( k = 0 ; k < (i_band_width + i_extra_width) ; k++ )
 642                 {
 643                     x = xx;
 644                     y = yy;
 645                     a = ( (i+1) * band_sep_angle + section_sep_angle * (c+1) + k )
 646                         * 3.141592 / 180.0;
 647                     x += (double)( cos(a) * (double)( i_line + j + i_rad ) );
 648                     y += (double)( -sin(a) * (double)( i_line + j + i_rad ) );
 649
 650                     *(p_picture->p[0].p_pixels + x + y * p_picture->p[0].i_pitch
 651                     ) = 255;/* Y(R,G,B); */
 652
 653                     x /= 2;
 654                     y /= 2;
 655
 656                     *(p_picture->p[1].p_pixels + x + y * p_picture->p[1].i_pitch
 657                     ) = 0;/* U(R,G,B); */
 658
 659                     if( 0x04 * (i_line + k ) - 0x0f > 0 )
 660                     {
 661                         if ( 0x04 * (i_line + k ) -0x0f < 0xff)
 662                             *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 663                             ) = ( 0x04 * ( i_line + k ) ) -(color1-1);/* -V(R,G,B); */
 664                         else
 665                             *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 666                             ) = 255;/* V(R,G,B); */
 667                     }
 668                     else
 669                     {
 670                         *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 671                         ) = color1;/* V(R,G,B); */
 672                     }
 673                 }
 674             }
 675         }
 676
 677         if( (height[i] * i_amp) > p_effect->i_height )
 678             height[i] = floor( p_effect->i_height / i_amp );
 679
 680         /* DO BASE OF BAND (mostly makes a circle) */
 681         if( i_show_base != 0 )
 682         {
 683             x = p_picture->p[0].i_pitch / 2;
 684             y = p_picture->p[0].i_lines / 2;
 685
 686             a =  ( (i+1) * band_sep_angle + section_sep_angle * (c+1) )
 687                 * 3.141592 / 180.0;
 688             x += (double)( cos(a) * (double)i_rad );/* newb-forceful casting */
 689             y += (double)( -sin(a) * (double)i_rad );
 690
 691             *(p_picture->p[0].p_pixels + x + y * p_picture->p[0].i_pitch
 692             ) = 255;/* Y(R,G,B); */
 693
 694             x /= 2;
 695             y /= 2;
 696
 697             *(p_picture->p[1].p_pixels + x + y * p_picture->p[1].i_pitch
 698             ) = 0;/* U(R,G,B); */
 699
 700             if( 0x04 * i_line - 0x0f > 0 )
 701             {
 702                 if( 0x04 * i_line -0x0f < 0xff)
 703                     *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 704                     ) = ( 0x04 * i_line) -(color1-1);/* -V(R,G,B); */
 705                 else
 706                     *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 707                     ) = 255;/* V(R,G,B); */
 708             }
 709             else
 710             {
 711                 *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 712                 ) = color1;/* V(R,G,B); */
 713             }
 714         }
 715
 716         /* DO A BAND */
 717         if( i_show_bands != 0 )
 718         for( j = 0 ; j < i_band_width ; j++ )
 719         {
 720             x = p_picture->p[0].i_pitch / 2;
 721             y = p_picture->p[0].i_lines / 2;
 722             xx = x;
 723             yy = y;
 724             a = ( (i+1) * band_sep_angle + section_sep_angle * (c+1) + j )
 725                 * 3.141592/180.0;
 726
 727             for( k = (i_rad+1) ; k < max_band_length ; k++ )
 728             {
 729                 if( (k-i_rad) > height[i] )
 730                     break;/* uhh.. */
 731
 732                 x = xx;
 733                 y = yy;
 734                 x += (double)( cos(a) * (double)k );/* newbed! */
 735                 y += (double)( -sin(a) * (double)k );
 736
 737                 *(p_picture->p[0].p_pixels + x + y * p_picture->p[0].i_pitch
 738                 ) = 255;
 739
 740                 x /= 2;
 741                 y /= 2;
 742
 743                 *(p_picture->p[1].p_pixels + x + y * p_picture->p[1].i_pitch
 744                 ) = 0;
 745
 746                 if( 0x04 * i_line - 0x0f > 0 )
 747                 {
 748                     if ( 0x04 * i_line -0x0f < 0xff)
 749                         *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 750                         ) = ( 0x04 * i_line) -(color1-1);
 751                     else
 752                         *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 753                         ) = 255;
 754                 }
 755                 else
 756                 {
 757                     *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 758                     ) = color1;
 759                 }
 760             }
 761         }
 762     }
 763
 764     fft_close( p_state );
 765
 766     free( p_s16_buff );
 767     free( height );
 768
 769     return 0;
 770 }
 771
 772
 773 /*****************************************************************************
 774  * scope_Run: scope effect
 775  *****************************************************************************/
 776 int scope_Run(visual_effect_t * p_effect, aout_instance_t *p_aout,
 777               aout_buffer_t * p_buffer , picture_t * p_picture)
 778 {
 779     VLC_UNUSED(p_aout);
 780     int i_index;
 781     float *p_sample ;
 782     uint8_t *ppp_area[2][3];
 783
 784
 785         for( i_index = 0 ; i_index < 2 ; i_index++ )
 786         {
 787             int j;
 788             for( j = 0 ; j < 3 ; j++ )
 789             {
 790                 ppp_area[i_index][j] =
 791                     p_picture->p[j].p_pixels + i_index * p_picture->p[j].i_lines
 792                                 / 2 * p_picture->p[j].i_pitch;
 793             }
 794         }
 795
 796         for( i_index = 0, p_sample = (float *)p_buffer->p_buffer;
 797              i_index < p_effect->i_width;
 798              i_index++ )
 799         {
 800             uint8_t i_value;
 801
 802             /* Left channel */
 803             i_value =  (*p_sample++ +1) * 127;
 804             *(ppp_area[0][0]
 805                + p_picture->p[0].i_pitch * i_index / p_effect->i_width
 806                + p_picture->p[0].i_lines * i_value / 512
 807                    * p_picture->p[0].i_pitch) = 0xbf;
 808             *(ppp_area[0][1]
 809                 + p_picture->p[1].i_pitch * i_index / p_effect->i_width
 810                 + p_picture->p[1].i_lines * i_value / 512
 811                    * p_picture->p[1].i_pitch) = 0xff;
 812
 813
 814            /* Right channel */
 815            i_value = ( *p_sample++ +1 ) * 127;
 816            *(ppp_area[1][0]
 817               + p_picture->p[0].i_pitch * i_index / p_effect->i_width
 818               + p_picture->p[0].i_lines * i_value / 512
 819                  * p_picture->p[0].i_pitch) = 0x9f;
 820            *(ppp_area[1][2]
 821               + p_picture->p[2].i_pitch * i_index / p_effect->i_width
 822               + p_picture->p[2].i_lines * i_value / 512
 823                 * p_picture->p[2].i_pitch) = 0xdd;
 824         }
 825         return 0;
 826 }
 827
 828
 829 /*****************************************************************************
 830  * vuMeter_Run: vu meter effect
 831  *****************************************************************************/
 832 int vuMeter_Run(visual_effect_t * p_effect, aout_instance_t *p_aout,
 833               aout_buffer_t * p_buffer , picture_t * p_picture)
 834 {
 835         VLC_UNUSED(p_aout);
 836         int i, j;
 837         float *p_sample = (float *)p_buffer->p_buffer;
 838         float i_value_l = 0;
 839         float i_value_r = 0;
 840         float ch;
 841
 842         /* Compute the peack values */
 843         for ( i = 0 ; i < 1024; i++ )
 844         {
 845                 ch = (*p_sample++) * 256;
 846                 if (ch > i_value_l)
 847                         i_value_l = ch;
 848
 849                 ch = (*p_sample++) * 256;
 850                 if (ch > i_value_r)
 851                         i_value_r = ch;
 852         }
 853
 854         i_value_l = abs(i_value_l);
 855         i_value_r = abs(i_value_r);
 856
 857         /* Stay under maximum value admited */
 858         if ( i_value_l > 200 * M_PI_2 )
 859                 i_value_l = 200 * M_PI_2;
 860         if ( i_value_r > 200 * M_PI_2 )
 861                 i_value_r = 200 * M_PI_2;
 862
 863         float *i_value;
 864
 865         if( !p_effect->p_data )
 866         {
 867                 /* Allocate memory to save hand positions */
 868                 p_effect->p_data = (void *)malloc( 2 * sizeof(float) );
 869                 i_value = p_effect->p_data;
 870                 i_value[0] = i_value_l;
 871                 i_value[1] = i_value_r;
 872         }
 873         else
 874         {
 875                 /* Make the hands go down slowly if the current values are slower
 876                 than the previous */
 877                 i_value = p_effect->p_data;
 878
 879                 if ( i_value_l > i_value[0] - 6 )
 880                         i_value[0] = i_value_l;
 881                 else
 882                         i_value[0] = i_value[0] - 6;
 883
 884                 if ( i_value_r > i_value[1] - 6 )
 885                         i_value[1] = i_value_r;
 886                 else
 887                         i_value[1] = i_value[1] - 6;
 888         }
 889
 890         int x, y, k;
 891         float teta;
 892         float teta_grad;
 893
 894         for ( j = 0; j < 2; j++ )
 895         {
 896                 /* Draw the two scales */
 897                 k = 0;
 898                 teta_grad = GRAD_ANGLE_MIN;
 899                 for ( teta = -M_PI_4; teta <= M_PI_4; teta = teta + 0.003 )
 900                 {
 901                         for ( i = 140; i <= 150; i++ )
 902                         {
 903                                 y = i * cos(teta) + 20;
 904                                 x = i * sin(teta) + 150 + 240 * j;
 905                                 /* Compute the last color for the gradation */
 906                                 if (teta >= teta_grad + GRAD_INCR && teta_grad <= GRAD_ANGLE_MAX)
 907                                 {
 908                                         teta_grad = teta_grad + GRAD_INCR;
 909                                         k = k + 5;
 910                                 }
 911                                 *(p_picture->p[0].p_pixels +
 912                                  (p_picture->p[0].i_lines - y - 1 ) * p_picture->p[0].i_pitch
 913                                  + x ) = 0x45;
 914                                 *(p_picture->p[1].p_pixels +
 915                                  (p_picture->p[1].i_lines - y / 2 - 1 ) * p_picture->p[1].i_pitch
 916                                  + x / 2 ) = 0x0;
 917                                 *(p_picture->p[2].p_pixels +
 918                                  (p_picture->p[2].i_lines - y / 2 - 1 ) * p_picture->p[2].i_pitch
 919                                  + x / 2 ) = 0x4D + k;
 920                         }
 921                 }
 922
 923                 /* Draw the two hands */
 924                 teta = (float)i_value[j] / 200 - M_PI_4;
 925                 for ( i = 0; i <= 150; i++ )
 926                 {
 927                         y = i * cos(teta) + 20;
 928                         x = i * sin(teta) + 150 + 240 * j;
 929                         *(p_picture->p[0].p_pixels +
 930                          (p_picture->p[0].i_lines - y - 1 ) * p_picture->p[0].i_pitch
 931                          + x ) = 0xAD;
 932                         *(p_picture->p[1].p_pixels +
 933                          (p_picture->p[1].i_lines - y / 2 - 1 ) * p_picture->p[1].i_pitch
 934                          + x / 2 ) = 0xFC;
 935                         *(p_picture->p[2].p_pixels +
 936                          (p_picture->p[2].i_lines - y / 2 - 1 ) * p_picture->p[2].i_pitch
 937                          + x / 2 ) = 0xAC;
 938                 }
 939
 940                 /* Draw the hand bases */
 941                 for ( teta = -M_PI_2; teta <= M_PI_2 + 0.01; teta = teta + 0.003 )
 942                 {
 943                         for ( i = 0; i < 10; i++ )
 944                         {
 945                                 y = i * cos(teta) + 20;
 946                                 x = i * sin(teta) + 150 + 240 * j;
 947                                 *(p_picture->p[0].p_pixels +
 948                                  (p_picture->p[0].i_lines - y - 1 ) * p_picture->p[0].i_pitch
 949                                  + x ) = 0xFF;
 950                                 *(p_picture->p[1].p_pixels +
 951                                  (p_picture->p[1].i_lines - y / 2 - 1 ) * p_picture->p[1].i_pitch
 952                                  + x / 2 ) = 0x80;
 953                                 *(p_picture->p[2].p_pixels +
 954                                  (p_picture->p[2].i_lines - y / 2 - 1 ) * p_picture->p[2].i_pitch
 955                                  + x / 2 ) = 0x80;
 956                         }
 957                 }
 958
 959         }
 960
 961         return 0;
 962 }