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  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27 #include <stdlib.h>                                      /* malloc(), free() */
  28 #include <vlc/vlc.h>
  29 #include <vlc_vout.h>
  30 #include <vlc_aout.h>
  31
  32 #include "visual.h"
  33 #include <math.h>
  34
  35 #include "fft.h"
  36
  37 #define PEAK_SPEED 1
  38
  39 /*****************************************************************************
  40  * dummy_Run
  41  *****************************************************************************/
  42 int dummy_Run( visual_effect_t * p_effect, aout_instance_t *p_aout,
  43                aout_buffer_t * p_buffer , picture_t * p_picture)
  44 {
  45     return 0;
  46 }
  47
  48 /*****************************************************************************
  49  * spectrum_Run: spectrum analyser
  50  *****************************************************************************/
  51 int spectrum_Run(visual_effect_t * p_effect, aout_instance_t *p_aout,
  52                  aout_buffer_t * p_buffer , picture_t * p_picture)
  53 {
  54     float p_output[FFT_BUFFER_SIZE];  /* Raw FFT Result  */
  55     int *height;                      /* Bar heights */
  56     int *peaks;                       /* Peaks */
  57     int i_nb_bands;                   /* number of bands */
  58     int i_band_width;                 /* width of bands */
  59     int i_separ;                      /* Should we let blanks ? */
  60     int i_amp;                        /* Vertical amplification */
  61     int i_peak;                       /* Should we draw peaks ? */
  62     char *psz_parse = NULL;           /* Args line */
  63
  64     /* Horizontal scale for 20-band equalizer */
  65     const int xscale1[]={0,1,2,3,4,5,6,7,8,11,15,20,27,
  66                         36,47,62,82,107,141,184,255};
  67
  68     /* Horizontal scale for 80-band equalizer */
  69     const int xscale2[] =
  70     {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,
  71      19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,
  72      35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,
  73      52,53,54,55,56,57,58,59,61,63,67,72,77,82,87,93,99,105,
  74      110,115,121,130,141,152,163,174,185,200,255};
  75     const int *xscale;
  76     const double y_scale =  3.60673760222;  /* (log 256) */
  77
  78     fft_state *p_state;                 /* internal FFT data */
  79
  80     int i , j , y , k;
  81     int i_line;
  82     int16_t p_dest[FFT_BUFFER_SIZE];      /* Adapted FFT result */
  83     int16_t p_buffer1[FFT_BUFFER_SIZE];   /* Buffer on which we perform
  84                                              the FFT (first channel) */
  85
  86     float *p_buffl =                     /* Original buffer */
  87             (float*)p_buffer->p_buffer;
  88
  89     int16_t  *p_buffs;                    /* int16_t converted buffer */
  90     int16_t  *p_s16_buff = NULL;                /* int16_t converted buffer */
  91
  92     p_s16_buff = (int16_t*)malloc(
  93               p_buffer->i_nb_samples * p_effect->i_nb_chans * sizeof(int16_t));
  94
  95     if( !p_s16_buff )
  96     {
  97         msg_Err(p_aout,"out of memory");
  98         return -1;
  99     }
 100
 101     p_buffs = p_s16_buff;
 102     i_nb_bands = config_GetInt ( p_aout, "visual-nbbands" );
 103     i_separ    = config_GetInt( p_aout, "visual-separ" );
 104     i_amp     = config_GetInt ( p_aout, "visual-amp" );
 105     i_peak     = config_GetInt ( p_aout, "visual-peaks" );
 106
 107     if( i_nb_bands == 20)
 108     {
 109         xscale = xscale1;
 110     }
 111     else
 112     {
 113         i_nb_bands = 80;
 114         xscale = xscale2;
 115     }
 116
 117     if( !p_effect->p_data )
 118     {
 119         p_effect->p_data=(void *)malloc(i_nb_bands * sizeof(int) );
 120         if( !p_effect->p_data)
 121         {
 122             msg_Err(p_aout,"out of memory");
 123             return -1;
 124         }
 125         peaks = (int *)p_effect->p_data;
 126         for( i = 0 ; i < i_nb_bands ; i++)
 127         {
 128            peaks[i] = 0;
 129         }
 130
 131     }
 132     else
 133     {
 134         peaks =(int *)p_effect->p_data;
 135     }
 136
 137
 138     height = (int *)malloc( i_nb_bands * sizeof(int) );
 139     if( !height)
 140     {
 141         msg_Err(p_aout,"out of memory");
 142         return -1;
 143     }
 144     /* Convert the buffer to int16_t  */
 145     /* Pasted from float32tos16.c */
 146     for (i = p_buffer->i_nb_samples * p_effect->i_nb_chans; i--; )
 147     {
 148         union { float f; int32_t i; } u;
 149         u.f = *p_buffl + 384.0;
 150         if(u.i >  0x43c07fff ) * p_buffs = 32767;
 151         else if ( u.i < 0x43bf8000 ) *p_buffs = -32768;
 152         else *p_buffs = u.i - 0x43c00000;
 153
 154         p_buffl++ ; p_buffs++ ;
 155     }
 156     p_state  = visual_fft_init();
 157     if( !p_state)
 158     {
 159         msg_Err(p_aout,"unable to initialize FFT transform");
 160         return -1;
 161     }
 162     p_buffs = p_s16_buff;
 163     for ( i = 0 ; i < FFT_BUFFER_SIZE ; i++)
 164     {
 165         p_output[i]    = 0;
 166         p_buffer1[i] = *p_buffs;
 167         p_buffs      = p_buffs + p_effect->i_nb_chans;
 168     }
 169     fft_perform( p_buffer1, p_output, p_state);
 170     for(i= 0; i< FFT_BUFFER_SIZE ; i++ )
 171         p_dest[i] = ( (int) sqrt( p_output [ i + 1 ] ) ) >> 8;
 172
 173     for ( i = 0 ; i< i_nb_bands ;i++)
 174     {
 175         /* We search the maximum on one scale */
 176         for( j = xscale[i] , y=0 ; j< xscale[ i + 1 ] ; j++ )
 177         {
 178             if ( p_dest[j] > y )
 179                  y = p_dest[j];
 180         }
 181         /* Calculate the height of the bar */
 182         y >>=7;/* remove some noise */
 183         if( y != 0)
 184         {
 185             height[i] = (int)log(y)* y_scale;
 186                if(height[i] > 150)
 187                   height[i] = 150;
 188         }
 189         else
 190         {
 191             height[i] = 0 ;
 192         }
 193
 194         /* Draw the bar now */
 195         i_band_width = floor( p_effect->i_width / i_nb_bands) ;
 196
 197         if( i_amp * height[i] > peaks[i])
 198         {
 199             peaks[i] = i_amp * height[i];
 200         }
 201         else if (peaks[i] > 0 )
 202         {
 203             peaks[i] -= PEAK_SPEED;
 204             if( peaks[i] < i_amp * height[i] )
 205             {
 206                 peaks[i] = i_amp * height[i];
 207             }
 208             if( peaks[i] < 0 )
 209             {
 210                 peaks[i] = 0;
 211             }
 212         }
 213
 214         if( peaks[i] > 0 && i_peak )
 215         {
 216             if( peaks[i] >= p_effect->i_height )
 217                 peaks[i] = p_effect->i_height - 2;
 218             i_line = peaks[i];
 219
 220             for( j = 0 ; j< i_band_width - i_separ; j++)
 221             {
 222                for( k = 0 ; k< 3 ; k ++)
 223                {
 224                    /* Draw the peak */
 225                      *(p_picture->p[0].p_pixels +
 226                     (p_picture->p[0].i_lines - i_line -1 -k ) *
 227                      p_picture->p[0].i_pitch + (i_band_width*i +j) )
 228                                     = 0xff;
 229
 230                     *(p_picture->p[1].p_pixels +
 231                      (p_picture->p[1].i_lines - i_line /2 -1 -k/2 ) *
 232                      p_picture->p[1].i_pitch +
 233                     ( ( i_band_width * i + j ) /2  ) )
 234                                     = 0x00;
 235
 236                    if( 0x04 * (i_line + k ) - 0x0f > 0 )
 237                    {
 238                        if ( 0x04 * (i_line + k ) -0x0f < 0xff)
 239                            *(p_picture->p[2].p_pixels  +
 240                             (p_picture->p[2].i_lines - i_line /2 - 1 -k/2 ) *
 241                              p_picture->p[2].i_pitch +
 242                              ( ( i_band_width * i + j ) /2  ) )
 243                                     = ( 0x04 * ( i_line + k ) ) -0x0f ;
 244                        else
 245                            *(p_picture->p[2].p_pixels  +
 246                             (p_picture->p[2].i_lines - i_line /2 - 1 -k/2 ) *
 247                              p_picture->p[2].i_pitch +
 248                              ( ( i_band_width * i + j ) /2  ) )
 249                                     = 0xff;
 250                    }
 251                    else
 252                    {
 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                                = 0x10 ;
 258                    }
 259                }
 260             }
 261         }
 262
 263         if(height[i] * i_amp > p_effect->i_height)
 264             height[i] = floor(p_effect->i_height / i_amp );
 265
 266         for(i_line = 0 ; i_line < i_amp * height[i]; i_line ++ )
 267         {
 268             for( j = 0 ; j< i_band_width - i_separ ; j++)
 269             {
 270                *(p_picture->p[0].p_pixels +
 271                  (p_picture->p[0].i_lines - i_line -1) *
 272                   p_picture->p[0].i_pitch + (i_band_width*i +j) ) = 0xff;
 273
 274                 *(p_picture->p[1].p_pixels +
 275                  (p_picture->p[1].i_lines - i_line /2 -1) *
 276                  p_picture->p[1].i_pitch +
 277                  ( ( i_band_width * i + j ) /2  ) ) = 0x00;
 278
 279                if( 0x04 * i_line - 0x0f > 0 )
 280                {
 281                     if( 0x04 * i_line - 0x0f < 0xff )
 282                          *(p_picture->p[2].p_pixels  +
 283                           (p_picture->p[2].i_lines - i_line /2 - 1) *
 284                            p_picture->p[2].i_pitch +
 285                            ( ( i_band_width * i + j ) /2  ) ) =
 286                                ( 0x04 * i_line) -0x0f ;
 287                     else
 288                          *(p_picture->p[2].p_pixels  +
 289                           (p_picture->p[2].i_lines - i_line /2 - 1) *
 290                            p_picture->p[2].i_pitch +
 291                            ( ( i_band_width * i + j ) /2  ) ) =
 292                                        0xff;
 293                }
 294                else
 295                {
 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                             0x10 ;
 301                }
 302             }
 303         }
 304     }
 305
 306     fft_close( p_state );
 307
 308     if( p_s16_buff != NULL )
 309     {
 310         free( p_s16_buff );
 311         p_s16_buff = NULL;
 312     }
 313
 314     if(height) free(height);
 315
 316     if(psz_parse) free(psz_parse);
 317
 318     return 0;
 319 }
 320
 321
 322 /*****************************************************************************
 323  * spectrometer_Run: derivative spectrum analysis
 324  *****************************************************************************/
 325 int spectrometer_Run(visual_effect_t * p_effect, aout_instance_t *p_aout,
 326                  aout_buffer_t * p_buffer , picture_t * p_picture)
 327 {
 328 #define Y(R,G,B) ((uint8_t)( (R * .299) + (G * .587) + (B * .114) ))
 329 #define U(R,G,B) ((uint8_t)( (R * -.169) + (G * -.332) + (B * .500) + 128 ))
 330 #define V(R,G,B) ((uint8_t)( (R * .500) + (G * -.419) + (B * -.0813) + 128 ))
 331     float p_output[FFT_BUFFER_SIZE];  /* Raw FFT Result  */
 332     int *height;                      /* Bar heights */
 333     int *peaks;                       /* Peaks */
 334     int i_nb_bands;                   /* number of bands */
 335     int i_band_width;                 /* width of bands */
 336     int i_separ;                      /* Should we let blanks ? */
 337     int i_amp;                        /* Vertical amplification */
 338     int i_peak;                       /* Should we draw peaks ? */
 339
 340     int i_original;          /* original spectrum graphic routine */
 341     int i_rad;               /* radius of circle of base of bands */
 342     int i_sections;          /* sections of spectranalysis */
 343     int i_extra_width;       /* extra width on peak */
 344     int i_peak_height;       /* height of peak */
 345     int c;                   /* sentinel container of total spectral sections */
 346     double band_sep_angle;   /* angled separation between beginning of each band */
 347     double section_sep_angle;/* "   "    '     "    '    "     "    spectrum section */
 348     int max_band_length;     /* try not to go out of screen */
 349     int i_show_base;         /* Should we draw base of circle ? */
 350     int i_show_bands;        /* Should we draw bands ? */
 351     //int i_invert_bands;      /* do the bands point inward ? */
 352     double a;                /* for various misc angle situations in radians */
 353     int x,y,xx,yy;           /* various misc x/y */
 354     char color1;             /* V slide on a YUV color cube */
 355     //char color2;             /* U slide.. ?  color2 fade color ? */
 356
 357     char *psz_parse = NULL;           /* Args line */
 358
 359     /* Horizontal scale for 20-band equalizer */
 360     const int xscale1[]={0,1,2,3,4,5,6,7,8,11,15,20,27,
 361                         36,47,62,82,107,141,184,255};
 362
 363     /* Horizontal scale for 80-band equalizer */
 364     const int xscale2[] =
 365     {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,
 366      19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,
 367      35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,
 368      52,53,54,55,56,57,58,59,61,63,67,72,77,82,87,93,99,105,
 369      110,115,121,130,141,152,163,174,185,200,255};
 370     const int *xscale;
 371     const double y_scale =  3.60673760222;  /* (log 256) */
 372
 373     fft_state *p_state;                 /* internal FFT data */
 374
 375     int i , j , k;
 376     int i_line;
 377     int16_t p_dest[FFT_BUFFER_SIZE];      /* Adapted FFT result */
 378     int16_t p_buffer1[FFT_BUFFER_SIZE];   /* Buffer on which we perform
 379                                              the FFT (first channel) */
 380     float *p_buffl =                     /* Original buffer */
 381             (float*)p_buffer->p_buffer;
 382
 383     int16_t  *p_buffs;                    /* int16_t converted buffer */
 384     int16_t  *p_s16_buff = NULL;                /* int16_t converted buffer */
 385
 386     i_line = 0;
 387
 388     p_s16_buff = (int16_t*)malloc(
 389               p_buffer->i_nb_samples * p_effect->i_nb_chans * sizeof(int16_t));
 390
 391     if( !p_s16_buff )
 392     {
 393         msg_Err(p_aout,"out of memory");
 394         return -1;
 395     }
 396
 397     p_buffs = p_s16_buff;
 398     i_original     = config_GetInt ( p_aout, "spect-show-original" );
 399     i_nb_bands     = config_GetInt ( p_aout, "spect-nbbands" );
 400     i_separ        = config_GetInt ( p_aout, "spect-separ" );
 401     i_amp          = config_GetInt ( p_aout, "spect-amp" );
 402     i_peak         = config_GetInt ( p_aout, "spect-show-peaks" );
 403     i_show_base    = config_GetInt ( p_aout, "spect-show-base" );
 404     i_show_bands   = config_GetInt ( p_aout, "spect-show-bands" );
 405     i_rad          = config_GetInt ( p_aout, "spect-radius" );
 406     i_sections     = config_GetInt ( p_aout, "spect-sections" );
 407     i_extra_width  = config_GetInt ( p_aout, "spect-peak-width" );
 408     i_peak_height  = config_GetInt ( p_aout, "spect-peak-height" );
 409     color1         = config_GetInt ( p_aout, "spect-color" );
 410
 411     if( i_nb_bands == 20)
 412     {
 413         xscale = xscale1;
 414     }
 415     else
 416     {
 417         if( i_nb_bands > 80 )
 418             i_nb_bands = 80;
 419         xscale = xscale2;
 420     }
 421
 422     if( !p_effect->p_data )
 423     {
 424         p_effect->p_data=(void *)malloc(i_nb_bands * sizeof(int) );
 425         if( !p_effect->p_data)
 426         {
 427             msg_Err(p_aout,"out of memory");
 428             return -1;
 429         }
 430         peaks = (int *)p_effect->p_data;
 431         for( i = 0 ; i < i_nb_bands ; i++)
 432         {
 433            peaks[i] = 0;
 434         }
 435     }
 436     else
 437     {
 438         peaks =(int *)p_effect->p_data;
 439     }
 440
 441     height = (int *)malloc( i_nb_bands * sizeof(int) );
 442     if( !height)
 443     {
 444         msg_Err(p_aout,"out of memory");
 445         return -1;
 446     }
 447
 448     /* Convert the buffer to int16_t  */
 449     /* Pasted from float32tos16.c */
 450     for (i = p_buffer->i_nb_samples * p_effect->i_nb_chans; i--; )
 451     {
 452         union { float f; int32_t i; } u;
 453         u.f = *p_buffl + 384.0;
 454         if(u.i >  0x43c07fff ) * p_buffs = 32767;
 455         else if ( u.i < 0x43bf8000 ) *p_buffs = -32768;
 456         else *p_buffs = u.i - 0x43c00000;
 457
 458         p_buffl++ ; p_buffs++ ;
 459     }
 460     p_state  = visual_fft_init();
 461     if( !p_state)
 462     {
 463         msg_Err(p_aout,"unable to initialize FFT transform");
 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 + 1 ] ) ) >> 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     if( p_s16_buff != NULL )
 767     {
 768         free( p_s16_buff );
 769         p_s16_buff = NULL;
 770     }
 771
 772     if(height) free(height);
 773
 774     if(psz_parse) free(psz_parse);
 775
 776     return 0;
 777 }
 778
 779
 780 /*****************************************************************************
 781  * scope_Run: scope effect
 782  *****************************************************************************/
 783 int scope_Run(visual_effect_t * p_effect, aout_instance_t *p_aout,
 784               aout_buffer_t * p_buffer , picture_t * p_picture)
 785 {
 786     int i_index;
 787     float *p_sample ;
 788     uint8_t *ppp_area[2][3];
 789
 790
 791         for( i_index = 0 ; i_index < 2 ; i_index++ )
 792         {
 793             int j;
 794             for( j = 0 ; j < 3 ; j++ )
 795             {
 796                 ppp_area[i_index][j] =
 797                     p_picture->p[j].p_pixels + i_index * p_picture->p[j].i_lines
 798                                 / 2 * p_picture->p[j].i_pitch;
 799             }
 800         }
 801
 802         for( i_index = 0, p_sample = (float *)p_buffer->p_buffer;
 803              i_index < p_effect->i_width;
 804              i_index++ )
 805         {
 806             uint8_t i_value;
 807
 808             /* Left channel */
 809             i_value =  (*p_sample++ +1) * 127;
 810             *(ppp_area[0][0]
 811                + p_picture->p[0].i_pitch * i_index / p_effect->i_width
 812                + p_picture->p[0].i_lines * i_value / 512
 813                    * p_picture->p[0].i_pitch) = 0xbf;
 814             *(ppp_area[0][1]
 815                 + p_picture->p[1].i_pitch * i_index / p_effect->i_width
 816                 + p_picture->p[1].i_lines * i_value / 512
 817                    * p_picture->p[1].i_pitch) = 0xff;
 818
 819
 820            /* Right channel */
 821            i_value = ( *p_sample++ +1 ) * 127;
 822            *(ppp_area[1][0]
 823               + p_picture->p[0].i_pitch * i_index / p_effect->i_width
 824               + p_picture->p[0].i_lines * i_value / 512
 825                  * p_picture->p[0].i_pitch) = 0x9f;
 826            *(ppp_area[1][2]
 827               + p_picture->p[2].i_pitch * i_index / p_effect->i_width
 828               + p_picture->p[2].i_lines * i_value / 512
 829                 * p_picture->p[2].i_pitch) = 0xdd;
 830         }
 831         return 0;
 832 }