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