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(
 104               p_buffer->i_nb_samples * p_effect->i_nb_chans * sizeof(int16_t));
 105
 106     if( !p_s16_buff )
 107         return -1;
 108
 109     p_buffs = p_s16_buff;
 110     i_80_bands = config_GetInt ( p_aout, "visual-80-bands" );
 111     i_peak     = config_GetInt ( p_aout, "visual-peaks" );
 112
 113     if( i_80_bands != 0)
 114     {
 115         xscale = xscale2;
 116         i_nb_bands = 80;
 117     }
 118     else
 119     {
 120         xscale = xscale1;
 121         i_nb_bands = 20;
 122     }
 123
 124     if( !p_data )
 125     {
 126         p_effect->p_data = p_data = malloc( sizeof( spectrum_data ) );
 127         if( !p_data )
 128         {
 129             free( p_s16_buff );
 130             return -1;
 131         }
 132
 133         p_data->peaks = calloc( 80, sizeof(int) );
 134         p_data->prev_heights = calloc( 80, sizeof(int) );
 135
 136         peaks = ( int * )p_data->peaks;
 137         prev_heights = ( int * )p_data->prev_heights;
 138     }
 139     else
 140     {
 141         peaks = (int *)p_data->peaks;
 142         prev_heights = (int *)p_data->prev_heights;
 143     }
 144
 145
 146     height = malloc( i_nb_bands * sizeof(int) );
 147     if( !height )
 148     {
 149         free( p_s16_buff );
 150         return -1;
 151     }
 152     /* Convert the buffer to int16_t  */
 153     /* Pasted from float32tos16.c */
 154     for (i = p_buffer->i_nb_samples * p_effect->i_nb_chans; i--; )
 155     {
 156         union { float f; int32_t i; } u;
 157         u.f = *p_buffl + 384.0;
 158         if(u.i >  0x43c07fff ) * p_buffs = 32767;
 159         else if ( u.i < 0x43bf8000 ) *p_buffs = -32768;
 160         else *p_buffs = u.i - 0x43c00000;
 161
 162         p_buffl++ ; p_buffs++ ;
 163     }
 164     p_state  = visual_fft_init();
 165     if( !p_state)
 166     {
 167         free( height );
 168         free( p_s16_buff );
 169         msg_Err(p_aout,"unable to initialize FFT transform");
 170         return -1;
 171     }
 172     p_buffs = p_s16_buff;
 173     for ( i = 0 ; i < FFT_BUFFER_SIZE ; i++)
 174     {
 175         p_output[i]  = 0;
 176         p_buffer1[i] = *p_buffs;
 177         p_buffs      = p_buffs + p_effect->i_nb_chans;
 178     }
 179     fft_perform( p_buffer1, p_output, p_state);
 180     for( i = 0; i< FFT_BUFFER_SIZE ; i++ )
 181         p_dest[i] = p_output[i] *  ( 2 ^ 16 ) / ( ( FFT_BUFFER_SIZE / 2 * 32768 ) ^ 2 );
 182
 183     /* Compute the horizontal position of the first band */
 184     i_band_width = floor( p_effect->i_width / i_nb_bands);
 185     i_start = ( p_effect->i_width - i_band_width * i_nb_bands ) / 2;
 186
 187     for ( i = 0 ; i < i_nb_bands ;i++)
 188     {
 189         /* We search the maximum on one scale */
 190         for( j = xscale[i], y = 0; j< xscale[ i + 1 ]; j++ )
 191         {
 192             if ( p_dest[j] > y )
 193                  y = p_dest[j];
 194         }
 195         /* Calculate the height of the bar */
 196         if( y != 0 )
 197         {
 198             height[i] = log( y ) * 30;
 199             if( height[i] > 380 )
 200                 height[i] = 380;
 201         }
 202         else
 203             height[ i ] = 0;
 204
 205         /* Draw the bar now */
 206
 207         if( height[i] > peaks[i] )
 208         {
 209             peaks[i] = height[i];
 210         }
 211         else if( peaks[i] > 0 )
 212         {
 213             peaks[i] -= PEAK_SPEED;
 214             if( peaks[i] < height[i] )
 215             {
 216                 peaks[i] = height[i];
 217             }
 218             if( peaks[i] < 0 )
 219             {
 220                 peaks[i] = 0;
 221             }
 222         }
 223
 224         /* Decrease the bars if needed */
 225         if( height[i] <= prev_heights[i] - BAR_DECREASE_SPEED )
 226         {
 227             height[i] = prev_heights[i];
 228             height[i] -= BAR_DECREASE_SPEED;
 229         }
 230         prev_heights[i] = height[i];
 231
 232         if( peaks[i] > 0 && i_peak )
 233         {
 234             if( peaks[i] >= p_effect->i_height )
 235                 peaks[i] = p_effect->i_height - 2;
 236             i_line = peaks[i];
 237
 238             for( j = 0; j < i_band_width - 1; j++ )
 239             {
 240                for( k = 0; k < 3; k ++ )
 241                {
 242                    /* Draw the peak */
 243                    *(p_picture->p[0].p_pixels +
 244                     ( p_effect->i_height - i_line -1 -k ) *
 245                      p_picture->p[0].i_pitch +
 246                      ( i_start + i_band_width*i + j ) )
 247                                     = 0xff;
 248
 249                    *(p_picture->p[1].p_pixels +
 250                     ( ( p_effect->i_height - i_line ) / 2 - 1 -k/2 ) *
 251                      p_picture->p[1].i_pitch +
 252                      ( ( i_start + i_band_width * i + j ) /2  ) )
 253                                     = 0x00;
 254
 255                    if( i_line + k - 0x0f > 0 )
 256                    {
 257                        if ( i_line + k - 0x0f < 0xff )
 258                            *(p_picture->p[2].p_pixels  +
 259                             ( ( p_effect->i_height - i_line ) / 2 - 1 -k/2 ) *
 260                              p_picture->p[2].i_pitch +
 261                              ( ( i_start + i_band_width * i + j ) /2  ) )
 262                                     = ( i_line + k ) - 0x0f;
 263                        else
 264                            *(p_picture->p[2].p_pixels  +
 265                             ( ( p_effect->i_height - i_line ) / 2 - 1 -k/2 ) *
 266                              p_picture->p[2].i_pitch +
 267                              ( ( i_start + i_band_width * i + j ) /2  ) )
 268                                     = 0xff;
 269                    }
 270                    else
 271                    {
 272                         *(p_picture->p[2].p_pixels  +
 273                          ( ( p_effect->i_height - i_line ) / 2 - 1 -k/2 ) *
 274                          p_picture->p[2].i_pitch +
 275                          ( ( i_start + i_band_width * i + j ) /2  ) )
 276                                = 0x10 ;
 277                    }
 278                }
 279             }
 280         }
 281
 282         if(height[i] > p_effect->i_height)
 283             height[i] = floor(p_effect->i_height );
 284
 285         for( i_line = 0; i_line < height[i]; i_line++ )
 286         {
 287             for( j = 0 ; j < i_band_width - 1; j++)
 288             {
 289                *(p_picture->p[0].p_pixels +
 290                  (p_effect->i_height - i_line - 1) *
 291                   p_picture->p[0].i_pitch +
 292                   ( i_start + i_band_width*i + j ) ) = 0xff;
 293
 294                *(p_picture->p[1].p_pixels +
 295                  ( ( p_effect->i_height - i_line ) / 2 - 1) *
 296                  p_picture->p[1].i_pitch +
 297                  ( ( i_start + i_band_width * i + j ) /2  ) ) = 0x00;
 298
 299                if( i_line - 0x0f > 0 )
 300                {
 301                     if( i_line - 0x0f < 0xff )
 302                          *(p_picture->p[2].p_pixels  +
 303                            ( ( p_effect->i_height - i_line ) / 2 - 1) *
 304                            p_picture->p[2].i_pitch +
 305                            ( ( i_start + i_band_width * i + j ) /2  ) ) =
 306                                i_line - 0x0f;
 307                     else
 308                          *(p_picture->p[2].p_pixels  +
 309                            ( ( p_effect->i_height - i_line ) / 2  - 1) *
 310                            p_picture->p[2].i_pitch +
 311                            ( ( i_start + i_band_width * i + j ) /2  ) ) =
 312                                        0xff;
 313                }
 314                else
 315                {
 316                     *(p_picture->p[2].p_pixels  +
 317                       ( ( p_effect->i_height - i_line ) / 2  - 1) *
 318                       p_picture->p[2].i_pitch +
 319                       ( ( i_start + i_band_width * i + j ) /2  ) ) =
 320                             0x10;
 321                }
 322             }
 323         }
 324     }
 325
 326     fft_close( p_state );
 327
 328     free( p_s16_buff );
 329     free( height );
 330
 331     return 0;
 332 }
 333
 334
 335 /*****************************************************************************
 336  * spectrometer_Run: derivative spectrum analysis
 337  *****************************************************************************/
 338 int spectrometer_Run(visual_effect_t * p_effect, aout_instance_t *p_aout,
 339                  aout_buffer_t * p_buffer , picture_t * p_picture)
 340 {
 341 #define Y(R,G,B) ((uint8_t)( (R * .299) + (G * .587) + (B * .114) ))
 342 #define U(R,G,B) ((uint8_t)( (R * -.169) + (G * -.332) + (B * .500) + 128 ))
 343 #define V(R,G,B) ((uint8_t)( (R * .500) + (G * -.419) + (B * -.0813) + 128 ))
 344     float p_output[FFT_BUFFER_SIZE];  /* Raw FFT Result  */
 345     int *height;                      /* Bar heights */
 346     int *peaks;                       /* Peaks */
 347     int i_80_bands;                   /* number of bands : 80 if true else 20 */
 348     int i_nb_bands;                   /* number of bands : 80 or 20 */
 349     int i_band_width;                 /* width of bands */
 350     int i_separ;                      /* Should we let blanks ? */
 351     int i_amp;                        /* Vertical amplification */
 352     int i_peak;                       /* Should we draw peaks ? */
 353
 354     int i_original;          /* original spectrum graphic routine */
 355     int i_rad;               /* radius of circle of base of bands */
 356     int i_sections;          /* sections of spectranalysis */
 357     int i_extra_width;       /* extra width on peak */
 358     int i_peak_height;       /* height of peak */
 359     int c;                   /* sentinel container of total spectral sections */
 360     double band_sep_angle;   /* angled separation between beginning of each band */
 361     double section_sep_angle;/* "   "    '     "    '    "     "    spectrum section */
 362     int max_band_length;     /* try not to go out of screen */
 363     int i_show_base;         /* Should we draw base of circle ? */
 364     int i_show_bands;        /* Should we draw bands ? */
 365     //int i_invert_bands;      /* do the bands point inward ? */
 366     double a;                /* for various misc angle situations in radians */
 367     int x,y,xx,yy;           /* various misc x/y */
 368     char color1;             /* V slide on a YUV color cube */
 369     //char color2;             /* U slide.. ?  color2 fade color ? */
 370
 371     /* Horizontal scale for 20-band equalizer */
 372     const int xscale1[]={0,1,2,3,4,5,6,7,8,11,15,20,27,
 373                         36,47,62,82,107,141,184,255};
 374
 375     /* Horizontal scale for 80-band equalizer */
 376     const int xscale2[] =
 377     {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,
 378      19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,
 379      35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,
 380      52,53,54,55,56,57,58,59,61,63,67,72,77,82,87,93,99,105,
 381      110,115,121,130,141,152,163,174,185,200,255};
 382     const int *xscale;
 383     const double y_scale =  3.60673760222;  /* (log 256) */
 384
 385     fft_state *p_state;                 /* internal FFT data */
 386
 387     int i , j , k;
 388     int i_line;
 389     int16_t p_dest[FFT_BUFFER_SIZE];      /* Adapted FFT result */
 390     int16_t p_buffer1[FFT_BUFFER_SIZE];   /* Buffer on which we perform
 391                                              the FFT (first channel) */
 392     float *p_buffl =                     /* Original buffer */
 393             (float*)p_buffer->p_buffer;
 394
 395     int16_t  *p_buffs;                    /* int16_t converted buffer */
 396     int16_t  *p_s16_buff = NULL;                /* int16_t converted buffer */
 397
 398     i_line = 0;
 399
 400     p_s16_buff = (int16_t*)malloc(
 401               p_buffer->i_nb_samples * p_effect->i_nb_chans * sizeof(int16_t));
 402
 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         p_buffs      = p_buffs + p_effect->i_nb_chans;
 485     }
 486     fft_perform( p_buffer1, p_output, p_state);
 487     for(i= 0; i< FFT_BUFFER_SIZE ; i++ )
 488         p_dest[i] = ( (int) sqrt( p_output [ i ] ) ) >> 8;
 489
 490     i_nb_bands *= i_sections;
 491
 492     for ( i = 0 ; i< i_nb_bands/i_sections ;i++)
 493     {
 494         /* We search the maximum on one scale */
 495         for( j = xscale[i] , y=0 ; j< xscale[ i + 1 ] ; j++ )
 496         {
 497             if ( p_dest[j] > y )
 498                  y = p_dest[j];
 499         }
 500         /* Calculate the height of the bar */
 501         y >>=7;/* remove some noise */
 502         if( y != 0)
 503         {
 504             height[i] = (int)log(y)* y_scale;
 505                if(height[i] > 150)
 506                   height[i] = 150;
 507         }
 508         else
 509         {
 510             height[i] = 0 ;
 511         }
 512
 513         /* Draw the bar now */
 514         i_band_width = floor( p_effect->i_width / (i_nb_bands/i_sections)) ;
 515
 516         if( i_amp * height[i] > peaks[i])
 517         {
 518             peaks[i] = i_amp * height[i];
 519         }
 520         else if (peaks[i] > 0 )
 521         {
 522             peaks[i] -= PEAK_SPEED;
 523             if( peaks[i] < i_amp * height[i] )
 524             {
 525                 peaks[i] = i_amp * height[i];
 526             }
 527             if( peaks[i] < 0 )
 528             {
 529                 peaks[i] = 0;
 530             }
 531         }
 532
 533         if( i_original != 0 )
 534         {
 535         if( peaks[i] > 0 && i_peak )
 536         {
 537             if( peaks[i] >= p_effect->i_height )
 538                 peaks[i] = p_effect->i_height - 2;
 539             i_line = peaks[i];
 540
 541             for( j = 0 ; j< i_band_width - i_separ; j++)
 542             {
 543                for( k = 0 ; k< 3 ; k ++)
 544                {
 545                    //* Draw the peak
 546                      *(p_picture->p[0].p_pixels +
 547                     (p_effect->i_height - i_line -1 -k ) *
 548                      p_picture->p[0].i_pitch + (i_band_width*i +j) )
 549                                     = 0xff;
 550
 551                     *(p_picture->p[1].p_pixels +
 552                      ( ( p_effect->i_height - i_line ) / 2 -1 -k/2 ) *
 553                      p_picture->p[1].i_pitch +
 554                     ( ( i_band_width * i + j ) /2  ) )
 555                                     = 0x00;
 556
 557                    if( 0x04 * (i_line + k ) - 0x0f > 0 )
 558                    {
 559                        if ( 0x04 * (i_line + k ) -0x0f < 0xff)
 560                            *(p_picture->p[2].p_pixels  +
 561                             ( ( p_effect->i_height - i_line ) / 2 - 1 -k/2 ) *
 562                              p_picture->p[2].i_pitch +
 563                              ( ( i_band_width * i + j ) /2  ) )
 564                                     = ( 0x04 * ( i_line + k ) ) -0x0f ;
 565                        else
 566                            *(p_picture->p[2].p_pixels  +
 567                             ( ( p_effect->i_height - i_line ) / 2 - 1 -k/2 ) *
 568                              p_picture->p[2].i_pitch +
 569                              ( ( i_band_width * i + j ) /2  ) )
 570                                     = 0xff;
 571                    }
 572                    else
 573                    {
 574                         *(p_picture->p[2].p_pixels  +
 575                          ( ( p_effect->i_height - i_line ) / 2 - 1 -k/2 ) *
 576                          p_picture->p[2].i_pitch +
 577                          ( ( i_band_width * i + j ) /2  ) )
 578                                = 0x10 ;
 579                    }
 580                }
 581             }
 582         }
 583         if(height[i] * i_amp > p_effect->i_height)
 584             height[i] = floor(p_effect->i_height / i_amp );
 585
 586         for(i_line = 0 ; i_line < i_amp * height[i]; i_line ++ )
 587         {
 588             for( j = 0 ; j< i_band_width - i_separ ; j++)
 589             {
 590                *(p_picture->p[0].p_pixels +
 591                  (p_effect->i_height - i_line -1) *
 592                   p_picture->p[0].i_pitch + (i_band_width*i +j) ) = 0xff;
 593
 594                 *(p_picture->p[1].p_pixels +
 595                  ( ( p_effect->i_height - i_line ) / 2 -1) *
 596                  p_picture->p[1].i_pitch +
 597                  ( ( i_band_width * i + j ) /2  ) ) = 0x00;
 598
 599                if( 0x04 * i_line - 0x0f > 0 )
 600                {
 601                     if( 0x04 * i_line - 0x0f < 0xff )
 602                          *(p_picture->p[2].p_pixels  +
 603                           ( ( p_effect->i_height - i_line ) / 2 - 1) *
 604                            p_picture->p[2].i_pitch +
 605                            ( ( i_band_width * i + j ) /2  ) ) =
 606                                ( 0x04 * i_line) -0x0f ;
 607                     else
 608                          *(p_picture->p[2].p_pixels  +
 609                           ( ( p_effect->i_height - i_line ) / 2 - 1) *
 610                            p_picture->p[2].i_pitch +
 611                            ( ( i_band_width * i + j ) /2  ) ) =
 612                                        0xff;
 613                }
 614                else
 615                {
 616                     *(p_picture->p[2].p_pixels  +
 617                      ( ( p_effect->i_height - i_line ) / 2 - 1) *
 618                      p_picture->p[2].i_pitch +
 619                      ( ( i_band_width * i + j ) /2  ) ) =
 620                             0x10 ;
 621                }
 622             }
 623         }
 624         }
 625     }
 626
 627     band_sep_angle = 360.0 / i_nb_bands;
 628     section_sep_angle = 360.0 / i_sections;
 629     if( i_peak_height < 1 )
 630         i_peak_height = 1;
 631     max_band_length = p_effect->i_height / 2 - ( i_rad + i_peak_height + 1 );
 632
 633     i_band_width = floor( 360 / i_nb_bands - i_separ );
 634     if( i_band_width < 1 )
 635         i_band_width = 1;
 636
 637     for( c = 0 ; c < i_sections ; c++ )
 638     for( i = 0 ; i < (i_nb_bands / i_sections) ; i++ )
 639     {
 640         /* DO A PEAK */
 641         if( peaks[i] > 0 && i_peak )
 642         {
 643             if( peaks[i] >= p_effect->i_height )
 644                 peaks[i] = p_effect->i_height - 2;
 645             i_line = peaks[i];
 646
 647             /* circular line pattern(so color blend is more visible) */
 648             for( j = 0 ; j < i_peak_height ; j++ )
 649             {
 650                 //x = p_picture->p[0].i_pitch / 2;
 651                 x = p_effect->i_width / 2;
 652                 y = p_effect->i_height / 2;
 653                 xx = x;
 654                 yy = y;
 655                 for( k = 0 ; k < (i_band_width + i_extra_width) ; k++ )
 656                 {
 657                     x = xx;
 658                     y = yy;
 659                     a = ( (i+1) * band_sep_angle + section_sep_angle * (c+1) + k )
 660                         * 3.141592 / 180.0;
 661                     x += (double)( cos(a) * (double)( i_line + j + i_rad ) );
 662                     y += (double)( -sin(a) * (double)( i_line + j + i_rad ) );
 663
 664                     *(p_picture->p[0].p_pixels + x + y * p_picture->p[0].i_pitch
 665                     ) = 255;/* Y(R,G,B); */
 666
 667                     x /= 2;
 668                     y /= 2;
 669
 670                     *(p_picture->p[1].p_pixels + x + y * p_picture->p[1].i_pitch
 671                     ) = 0;/* U(R,G,B); */
 672
 673                     if( 0x04 * (i_line + k ) - 0x0f > 0 )
 674                     {
 675                         if ( 0x04 * (i_line + k ) -0x0f < 0xff)
 676                             *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 677                             ) = ( 0x04 * ( i_line + k ) ) -(color1-1);/* -V(R,G,B); */
 678                         else
 679                             *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 680                             ) = 255;/* V(R,G,B); */
 681                     }
 682                     else
 683                     {
 684                         *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 685                         ) = color1;/* V(R,G,B); */
 686                     }
 687                 }
 688             }
 689         }
 690
 691         if( (height[i] * i_amp) > p_effect->i_height )
 692             height[i] = floor( p_effect->i_height / i_amp );
 693
 694         /* DO BASE OF BAND (mostly makes a circle) */
 695         if( i_show_base != 0 )
 696         {
 697             //x = p_picture->p[0].i_pitch / 2;
 698             x = p_effect->i_width / 2;
 699             y = p_effect->i_height / 2;
 700
 701             a =  ( (i+1) * band_sep_angle + section_sep_angle * (c+1) )
 702                 * 3.141592 / 180.0;
 703             x += (double)( cos(a) * (double)i_rad );/* newb-forceful casting */
 704             y += (double)( -sin(a) * (double)i_rad );
 705
 706             *(p_picture->p[0].p_pixels + x + y * p_picture->p[0].i_pitch
 707             ) = 255;/* Y(R,G,B); */
 708
 709             x /= 2;
 710             y /= 2;
 711
 712             *(p_picture->p[1].p_pixels + x + y * p_picture->p[1].i_pitch
 713             ) = 0;/* U(R,G,B); */
 714
 715             if( 0x04 * i_line - 0x0f > 0 )
 716             {
 717                 if( 0x04 * i_line -0x0f < 0xff)
 718                     *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 719                     ) = ( 0x04 * i_line) -(color1-1);/* -V(R,G,B); */
 720                 else
 721                     *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 722                     ) = 255;/* V(R,G,B); */
 723             }
 724             else
 725             {
 726                 *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 727                 ) = color1;/* V(R,G,B); */
 728             }
 729         }
 730
 731         /* DO A BAND */
 732         if( i_show_bands != 0 )
 733         for( j = 0 ; j < i_band_width ; j++ )
 734         {
 735             x = p_effect->i_width / 2;
 736             y = p_effect->i_height / 2;
 737             xx = x;
 738             yy = y;
 739             a = ( (i+1) * band_sep_angle + section_sep_angle * (c+1) + j )
 740                 * 3.141592/180.0;
 741
 742             for( k = (i_rad+1) ; k < max_band_length ; k++ )
 743             {
 744                 if( (k-i_rad) > height[i] )
 745                     break;/* uhh.. */
 746
 747                 x = xx;
 748                 y = yy;
 749                 x += (double)( cos(a) * (double)k );/* newbed! */
 750                 y += (double)( -sin(a) * (double)k );
 751
 752                 *(p_picture->p[0].p_pixels + x + y * p_picture->p[0].i_pitch
 753                 ) = 255;
 754
 755                 x /= 2;
 756                 y /= 2;
 757
 758                 *(p_picture->p[1].p_pixels + x + y * p_picture->p[1].i_pitch
 759                 ) = 0;
 760
 761                 if( 0x04 * i_line - 0x0f > 0 )
 762                 {
 763                     if ( 0x04 * i_line -0x0f < 0xff)
 764                         *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 765                         ) = ( 0x04 * i_line) -(color1-1);
 766                     else
 767                         *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 768                         ) = 255;
 769                 }
 770                 else
 771                 {
 772                     *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 773                     ) = color1;
 774                 }
 775             }
 776         }
 777     }
 778
 779     fft_close( p_state );
 780
 781     free( p_s16_buff );
 782     free( height );
 783
 784     return 0;
 785 }
 786
 787
 788 /*****************************************************************************
 789  * scope_Run: scope effect
 790  *****************************************************************************/
 791 int scope_Run(visual_effect_t * p_effect, aout_instance_t *p_aout,
 792               aout_buffer_t * p_buffer , picture_t * p_picture)
 793 {
 794     VLC_UNUSED(p_aout);
 795     int i_index;
 796     float *p_sample ;
 797     uint8_t *ppp_area[2][3];
 798
 799
 800         for( i_index = 0 ; i_index < 2 ; i_index++ )
 801         {
 802             int j;
 803             for( j = 0 ; j < 3 ; j++ )
 804             {
 805                 ppp_area[i_index][j] =
 806                     p_picture->p[j].p_pixels + i_index * p_picture->p[j].i_lines
 807                                 / 2 * p_picture->p[j].i_pitch;
 808             }
 809         }
 810
 811         for( i_index = 0, p_sample = (float *)p_buffer->p_buffer;
 812              i_index < p_effect->i_width;
 813              i_index++ )
 814         {
 815             uint8_t i_value;
 816
 817             /* Left channel */
 818             i_value =  (*p_sample++ +1) * 127;
 819             *(ppp_area[0][0]
 820                + p_picture->p[0].i_pitch * i_index / p_effect->i_width
 821                + p_picture->p[0].i_lines * i_value / 512
 822                    * p_picture->p[0].i_pitch) = 0xbf;
 823             *(ppp_area[0][1]
 824                 + p_picture->p[1].i_pitch * i_index / p_effect->i_width
 825                 + p_picture->p[1].i_lines * i_value / 512
 826                    * p_picture->p[1].i_pitch) = 0xff;
 827
 828
 829            /* Right channel */
 830            i_value = ( *p_sample++ +1 ) * 127;
 831            *(ppp_area[1][0]
 832               + p_picture->p[0].i_pitch * i_index / p_effect->i_width
 833               + p_picture->p[0].i_lines * i_value / 512
 834                  * p_picture->p[0].i_pitch) = 0x9f;
 835            *(ppp_area[1][2]
 836               + p_picture->p[2].i_pitch * i_index / p_effect->i_width
 837               + p_picture->p[2].i_lines * i_value / 512
 838                 * p_picture->p[2].i_pitch) = 0xdd;
 839         }
 840         return 0;
 841 }
 842
 843
 844 /*****************************************************************************
 845  * vuMeter_Run: vu meter effect
 846  *****************************************************************************/
 847 int vuMeter_Run(visual_effect_t * p_effect, aout_instance_t *p_aout,
 848               aout_buffer_t * p_buffer , picture_t * p_picture)
 849 {
 850         VLC_UNUSED(p_aout);
 851         int i, j;
 852         float *p_sample = (float *)p_buffer->p_buffer;
 853         float i_value_l = 0;
 854         float i_value_r = 0;
 855         float ch;
 856
 857         /* Compute the peack values */
 858         for ( i = 0 ; i < 1024; i++ )
 859         {
 860                 ch = (*p_sample++) * 256;
 861                 if (ch > i_value_l)
 862                         i_value_l = ch;
 863
 864                 ch = (*p_sample++) * 256;
 865                 if (ch > i_value_r)
 866                         i_value_r = ch;
 867         }
 868
 869         i_value_l = abs(i_value_l);
 870         i_value_r = abs(i_value_r);
 871
 872         /* Stay under maximum value admited */
 873         if ( i_value_l > 200 * M_PI_2 )
 874                 i_value_l = 200 * M_PI_2;
 875         if ( i_value_r > 200 * M_PI_2 )
 876                 i_value_r = 200 * M_PI_2;
 877
 878         float *i_value;
 879
 880         if( !p_effect->p_data )
 881         {
 882                 /* Allocate memory to save hand positions */
 883                 p_effect->p_data = (void *)malloc( 2 * sizeof(float) );
 884                 i_value = p_effect->p_data;
 885                 i_value[0] = i_value_l;
 886                 i_value[1] = i_value_r;
 887         }
 888         else
 889         {
 890                 /* Make the hands go down slowly if the current values are slower
 891                 than the previous */
 892                 i_value = p_effect->p_data;
 893
 894                 if ( i_value_l > i_value[0] - 6 )
 895                         i_value[0] = i_value_l;
 896                 else
 897                         i_value[0] = i_value[0] - 6;
 898
 899                 if ( i_value_r > i_value[1] - 6 )
 900                         i_value[1] = i_value_r;
 901                 else
 902                         i_value[1] = i_value[1] - 6;
 903         }
 904
 905         int x, y, k;
 906         float teta;
 907         float teta_grad;
 908
 909         for ( j = 0; j < 2; j++ )
 910         {
 911                 /* Draw the two scales */
 912                 k = 0;
 913                 teta_grad = GRAD_ANGLE_MIN;
 914                 for ( teta = -M_PI_4; teta <= M_PI_4; teta = teta + 0.003 )
 915                 {
 916                         for ( i = 140; i <= 150; i++ )
 917                         {
 918                                 y = i * cos(teta) + 20;
 919                                 x = i * sin(teta) + 150 + 240 * j;
 920                                 /* Compute the last color for the gradation */
 921                                 if (teta >= teta_grad + GRAD_INCR && teta_grad <= GRAD_ANGLE_MAX)
 922                                 {
 923                                         teta_grad = teta_grad + GRAD_INCR;
 924                                         k = k + 5;
 925                                 }
 926                                 *(p_picture->p[0].p_pixels +
 927                                  (p_picture->p[0].i_lines - y - 1 ) * p_picture->p[0].i_pitch
 928                                  + x ) = 0x45;
 929                                 *(p_picture->p[1].p_pixels +
 930                                  (p_picture->p[1].i_lines - y / 2 - 1 ) * p_picture->p[1].i_pitch
 931                                  + x / 2 ) = 0x0;
 932                                 *(p_picture->p[2].p_pixels +
 933                                  (p_picture->p[2].i_lines - y / 2 - 1 ) * p_picture->p[2].i_pitch
 934                                  + x / 2 ) = 0x4D + k;
 935                         }
 936                 }
 937
 938                 /* Draw the two hands */
 939                 teta = (float)i_value[j] / 200 - M_PI_4;
 940                 for ( i = 0; i <= 150; i++ )
 941                 {
 942                         y = i * cos(teta) + 20;
 943                         x = i * sin(teta) + 150 + 240 * j;
 944                         *(p_picture->p[0].p_pixels +
 945                          (p_picture->p[0].i_lines - y - 1 ) * p_picture->p[0].i_pitch
 946                          + x ) = 0xAD;
 947                         *(p_picture->p[1].p_pixels +
 948                          (p_picture->p[1].i_lines - y / 2 - 1 ) * p_picture->p[1].i_pitch
 949                          + x / 2 ) = 0xFC;
 950                         *(p_picture->p[2].p_pixels +
 951                          (p_picture->p[2].i_lines - y / 2 - 1 ) * p_picture->p[2].i_pitch
 952                          + x / 2 ) = 0xAC;
 953                 }
 954
 955                 /* Draw the hand bases */
 956                 for ( teta = -M_PI_2; teta <= M_PI_2 + 0.01; teta = teta + 0.003 )
 957                 {
 958                         for ( i = 0; i < 10; i++ )
 959                         {
 960                                 y = i * cos(teta) + 20;
 961                                 x = i * sin(teta) + 150 + 240 * j;
 962                                 *(p_picture->p[0].p_pixels +
 963                                  (p_picture->p[0].i_lines - y - 1 ) * p_picture->p[0].i_pitch
 964                                  + x ) = 0xFF;
 965                                 *(p_picture->p[1].p_pixels +
 966                                  (p_picture->p[1].i_lines - y / 2 - 1 ) * p_picture->p[1].i_pitch
 967                                  + x / 2 ) = 0x80;
 968                                 *(p_picture->p[2].p_pixels +
 969                                  (p_picture->p[2].i_lines - y / 2 - 1 ) * p_picture->p[2].i_pitch
 970                                  + x / 2 ) = 0x80;
 971                         }
 972                 }
 973
 974         }
 975
 976         return 0;
 977 }