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

   1 /*****************************************************************************
   2  * effects.c : Effects for the visualization system
   3  *****************************************************************************
   4  * Copyright (C) 2002-2009 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Clément Stenac <zorglub@via.ecp.fr>
   8  *          Adrien Maglo <magsoft@videolan.org>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24
  25 /*****************************************************************************
  26  * Preamble
  27  *****************************************************************************/
  28 #ifdef HAVE_CONFIG_H
  29 # include "config.h"
  30 #endif
  31
  32 #include <vlc_common.h>
  33 #include <vlc_vout.h>
  34 #include <vlc_aout.h>
  35
  36 #include "visual.h"
  37 #include <math.h>
  38
  39 #include "fft.h"
  40
  41 #define PEAK_SPEED 1
  42 #define BAR_DECREASE_SPEED 5
  43
  44 #define GRAD_ANGLE_MIN 0.2
  45 #define GRAD_ANGLE_MAX 0.5
  46 #define GRAD_INCR 0.01
  47
  48 /*****************************************************************************
  49  * dummy_Run
  50  *****************************************************************************/
  51 int dummy_Run( visual_effect_t * p_effect, vlc_object_t *p_aout,
  52                const block_t * p_buffer , picture_t * p_picture)
  53 {
  54     VLC_UNUSED(p_effect); VLC_UNUSED(p_aout); VLC_UNUSED(p_buffer);
  55     VLC_UNUSED(p_picture);
  56     return 0;
  57 }
  58
  59 /*****************************************************************************
  60  * spectrum_Run: spectrum analyser
  61  *****************************************************************************/
  62 int spectrum_Run(visual_effect_t * p_effect, vlc_object_t *p_aout,
  63                  const block_t * p_buffer , picture_t * p_picture)
  64 {
  65     spectrum_data *p_data = p_effect->p_data;
  66     float p_output[FFT_BUFFER_SIZE];  /* Raw FFT Result  */
  67     int *height;                      /* Bar heights */
  68     int *peaks;                       /* Peaks */
  69     int *prev_heights;                /* Previous bar heights */
  70     int i_80_bands;                   /* number of bands : 80 if true else 20 */
  71     int i_nb_bands;                   /* number of bands : 80 or 20 */
  72     int i_band_width;                 /* width of bands */
  73     int i_start;                      /* first band horizontal position */
  74     int i_peak;                       /* Should we draw peaks ? */
  75
  76     /* Horizontal scale for 20-band equalizer */
  77     const int xscale1[]={0,1,2,3,4,5,6,7,8,11,15,20,27,
  78                         36,47,62,82,107,141,184,255};
  79
  80     /* Horizontal scale for 80-band equalizer */
  81     const int xscale2[] =
  82     {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,
  83      19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,
  84      35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,
  85      52,53,54,55,56,57,58,59,61,63,67,72,77,82,87,93,99,105,
  86      110,115,121,130,141,152,163,174,185,200,255};
  87     const int *xscale;
  88
  89     fft_state *p_state;                 /* internal FFT data */
  90
  91     int i , j , y , k;
  92     int i_line;
  93     int16_t p_dest[FFT_BUFFER_SIZE];      /* Adapted FFT result */
  94     int16_t p_buffer1[FFT_BUFFER_SIZE];   /* Buffer on which we perform
  95                                              the FFT (first channel) */
  96
  97     float *p_buffl =                     /* Original buffer */
  98             (float*)p_buffer->p_buffer;
  99
 100     int16_t  *p_buffs;                    /* int16_t converted buffer */
 101     int16_t  *p_s16_buff;                 /* int16_t converted buffer */
 102
 103     /* Create p_data if needed */
 104     if( !p_data )
 105     {
 106         p_effect->p_data = p_data = malloc( sizeof( spectrum_data ) );
 107         if( !p_data )
 108             return -1;
 109
 110         p_data->peaks = calloc( 80, sizeof(int) );
 111         p_data->prev_heights = calloc( 80, sizeof(int) );
 112
 113         p_data->i_prev_nb_samples = 0;
 114         p_data->p_prev_s16_buff = NULL;
 115     }
 116     peaks = (int *)p_data->peaks;
 117     prev_heights = (int *)p_data->prev_heights;
 118
 119     /* Allocate the buffer only if the number of samples change */
 120     if( p_buffer->i_nb_samples != p_data->i_prev_nb_samples )
 121     {
 122         free( p_data->p_prev_s16_buff );
 123         p_data->p_prev_s16_buff = malloc( p_buffer->i_nb_samples *
 124                                           p_effect->i_nb_chans *
 125                                           sizeof(int16_t));
 126         p_data->i_prev_nb_samples = p_buffer->i_nb_samples;
 127         if( !p_data->p_prev_s16_buff )
 128             return -1;
 129     }
 130     p_buffs = p_s16_buff = p_data->p_prev_s16_buff;
 131
 132     i_80_bands = config_GetInt ( p_aout, "visual-80-bands" );
 133     i_peak     = config_GetInt ( p_aout, "visual-peaks" );
 134
 135     if( i_80_bands != 0)
 136     {
 137         xscale = xscale2;
 138         i_nb_bands = 80;
 139     }
 140     else
 141     {
 142         xscale = xscale1;
 143         i_nb_bands = 20;
 144     }
 145
 146     height = malloc( i_nb_bands * sizeof(int) );
 147     if( !height )
 148     {
 149         return -1;
 150     }
 151     /* Convert the buffer to int16_t  */
 152     /* Pasted from float32tos16.c */
 153     for (i = p_buffer->i_nb_samples * p_effect->i_nb_chans; i--; )
 154     {
 155         union { float f; int32_t i; } u;
 156         u.f = *p_buffl + 384.0;
 157         if(u.i >  0x43c07fff ) * p_buffs = 32767;
 158         else if ( u.i < 0x43bf8000 ) *p_buffs = -32768;
 159         else *p_buffs = u.i - 0x43c00000;
 160
 161         p_buffl++ ; p_buffs++ ;
 162     }
 163     p_state  = visual_fft_init();
 164     if( !p_state)
 165     {
 166         free( height );
 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( height );
 331
 332     return 0;
 333 }
 334
 335
 336 /*****************************************************************************
 337  * spectrometer_Run: derivative spectrum analysis
 338  *****************************************************************************/
 339 int spectrometer_Run(visual_effect_t * p_effect, vlc_object_t *p_aout,
 340                      const block_t * p_buffer , picture_t * p_picture)
 341 {
 342 #define Y(R,G,B) ((uint8_t)( (R * .299) + (G * .587) + (B * .114) ))
 343 #define U(R,G,B) ((uint8_t)( (R * -.169) + (G * -.332) + (B * .500) + 128 ))
 344 #define V(R,G,B) ((uint8_t)( (R * .500) + (G * -.419) + (B * -.0813) + 128 ))
 345     float p_output[FFT_BUFFER_SIZE];  /* Raw FFT Result  */
 346     int *height;                      /* Bar heights */
 347     int *peaks;                       /* Peaks */
 348     int i_80_bands;                   /* number of bands : 80 if true else 20 */
 349     int i_nb_bands;                   /* number of bands : 80 or 20 */
 350     int i_band_width;                 /* width of bands */
 351     int i_separ;                      /* Should we let blanks ? */
 352     int i_amp;                        /* Vertical amplification */
 353     int i_peak;                       /* Should we draw peaks ? */
 354
 355     int i_original;          /* original spectrum graphic routine */
 356     int i_rad;               /* radius of circle of base of bands */
 357     int i_sections;          /* sections of spectranalysis */
 358     int i_extra_width;       /* extra width on peak */
 359     int i_peak_height;       /* height of peak */
 360     int c;                   /* sentinel container of total spectral sections */
 361     double band_sep_angle;   /* angled separation between beginning of each band */
 362     double section_sep_angle;/* "   "    '     "    '    "     "    spectrum section */
 363     int max_band_length;     /* try not to go out of screen */
 364     int i_show_base;         /* Should we draw base of circle ? */
 365     int i_show_bands;        /* Should we draw bands ? */
 366     //int i_invert_bands;      /* do the bands point inward ? */
 367     double a;                /* for various misc angle situations in radians */
 368     int x,y,xx,yy;           /* various misc x/y */
 369     char color1;             /* V slide on a YUV color cube */
 370     //char color2;             /* U slide.. ?  color2 fade color ? */
 371
 372     /* Horizontal scale for 20-band equalizer */
 373     const int xscale1[]={0,1,2,3,4,5,6,7,8,11,15,20,27,
 374                         36,47,62,82,107,141,184,255};
 375
 376     /* Horizontal scale for 80-band equalizer */
 377     const int xscale2[] =
 378     {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,
 379      19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,
 380      35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,
 381      52,53,54,55,56,57,58,59,61,63,67,72,77,82,87,93,99,105,
 382      110,115,121,130,141,152,163,174,185,200,255};
 383     const int *xscale;
 384     const double y_scale =  3.60673760222;  /* (log 256) */
 385
 386     fft_state *p_state;                 /* internal FFT data */
 387
 388     int i , j , k;
 389     int i_line;
 390     int16_t p_dest[FFT_BUFFER_SIZE];      /* Adapted FFT result */
 391     int16_t p_buffer1[FFT_BUFFER_SIZE];   /* Buffer on which we perform
 392                                              the FFT (first channel) */
 393     float *p_buffl =                     /* Original buffer */
 394             (float*)p_buffer->p_buffer;
 395
 396     int16_t  *p_buffs;                    /* int16_t converted buffer */
 397     int16_t  *p_s16_buff;                /* int16_t converted buffer */
 398
 399     i_line = 0;
 400
 401     p_s16_buff = malloc( p_buffer->i_nb_samples * p_effect->i_nb_chans * sizeof(int16_t) );
 402     if( !p_s16_buff )
 403         return -1;
 404
 405     p_buffs = p_s16_buff;
 406     i_original     = config_GetInt ( p_aout, "spect-show-original" );
 407     i_80_bands     = config_GetInt ( p_aout, "spect-80-bands" );
 408     i_separ        = config_GetInt ( p_aout, "spect-separ" );
 409     i_amp          = config_GetInt ( p_aout, "spect-amp" );
 410     i_peak         = config_GetInt ( p_aout, "spect-show-peaks" );
 411     i_show_base    = config_GetInt ( p_aout, "spect-show-base" );
 412     i_show_bands   = config_GetInt ( p_aout, "spect-show-bands" );
 413     i_rad          = config_GetInt ( p_aout, "spect-radius" );
 414     i_sections     = config_GetInt ( p_aout, "spect-sections" );
 415     i_extra_width  = config_GetInt ( p_aout, "spect-peak-width" );
 416     i_peak_height  = config_GetInt ( p_aout, "spect-peak-height" );
 417     color1         = config_GetInt ( p_aout, "spect-color" );
 418
 419     if( i_80_bands != 0)
 420     {
 421         xscale = xscale2;
 422         i_nb_bands = 80;
 423     }
 424     else
 425     {
 426         xscale = xscale1;
 427         i_nb_bands = 20;
 428     }
 429
 430     if( !p_effect->p_data )
 431     {
 432         p_effect->p_data=(void *)calloc( 80, sizeof(int) );
 433         if( !p_effect->p_data )
 434         {
 435             free( p_s16_buff );
 436             return -1;
 437         }
 438     }
 439     peaks =(int *)p_effect->p_data;
 440
 441     height = (int *)malloc( i_nb_bands * sizeof(int) );
 442     if( !height)
 443     {
 444         free( p_effect->p_data );
 445         free( p_s16_buff );
 446         return -1;
 447     }
 448
 449     /* Convert the buffer to int16_t  */
 450     /* Pasted from float32tos16.c */
 451     for (i = p_buffer->i_nb_samples * p_effect->i_nb_chans; i--; )
 452     {
 453         union { float f; int32_t i; } u;
 454         u.f = *p_buffl + 384.0;
 455         if(u.i >  0x43c07fff ) * p_buffs = 32767;
 456         else if ( u.i < 0x43bf8000 ) *p_buffs = -32768;
 457         else *p_buffs = u.i - 0x43c00000;
 458
 459         p_buffl++ ; p_buffs++ ;
 460     }
 461     p_state  = visual_fft_init();
 462     if( !p_state)
 463     {
 464         msg_Err(p_aout,"unable to initialize FFT transform");
 465         free( height );
 466         free( p_effect->p_data );
 467         free( p_s16_buff );
 468         return -1;
 469     }
 470     p_buffs = p_s16_buff;
 471     for ( i = 0 ; i < FFT_BUFFER_SIZE; i++)
 472     {
 473         p_output[i]    = 0;
 474         p_buffer1[i] = *p_buffs;
 475
 476         p_buffs += p_effect->i_nb_chans;
 477         if( p_buffs >= &p_s16_buff[p_buffer->i_nb_samples * p_effect->i_nb_chans] )
 478             p_buffs = p_s16_buff;
 479     }
 480     fft_perform( p_buffer1, p_output, p_state);
 481     for(i = 0; i < FFT_BUFFER_SIZE; i++)
 482     {
 483         int sqrti = sqrt(p_output[i]);
 484         p_dest[i] = sqrti >> 8;
 485     }
 486
 487     i_nb_bands *= i_sections;
 488
 489     for ( i = 0 ; i< i_nb_bands/i_sections ;i++)
 490     {
 491         /* We search the maximum on one scale */
 492         for( j = xscale[i] , y=0 ; j< xscale[ i + 1 ] ; j++ )
 493         {
 494             if ( p_dest[j] > y )
 495                  y = p_dest[j];
 496         }
 497         /* Calculate the height of the bar */
 498         y >>=7;/* remove some noise */
 499         if( y != 0)
 500         {
 501             int logy = log(y);
 502             height[i] = logy * y_scale;
 503             if(height[i] > 150)
 504                 height[i] = 150;
 505         }
 506         else
 507         {
 508             height[i] = 0 ;
 509         }
 510
 511         /* Draw the bar now */
 512         i_band_width = floor( p_effect->i_width / (i_nb_bands/i_sections)) ;
 513
 514         if( i_amp * height[i] > peaks[i])
 515         {
 516             peaks[i] = i_amp * height[i];
 517         }
 518         else if (peaks[i] > 0 )
 519         {
 520             peaks[i] -= PEAK_SPEED;
 521             if( peaks[i] < i_amp * height[i] )
 522             {
 523                 peaks[i] = i_amp * height[i];
 524             }
 525             if( peaks[i] < 0 )
 526             {
 527                 peaks[i] = 0;
 528             }
 529         }
 530
 531         if( i_original != 0 )
 532         {
 533         if( peaks[i] > 0 && i_peak )
 534         {
 535             if( peaks[i] >= p_effect->i_height )
 536                 peaks[i] = p_effect->i_height - 2;
 537             i_line = peaks[i];
 538
 539             for( j = 0 ; j< i_band_width - i_separ; j++)
 540             {
 541                for( k = 0 ; k< 3 ; k ++)
 542                {
 543                    //* Draw the peak
 544                      *(p_picture->p[0].p_pixels +
 545                     (p_effect->i_height - i_line -1 -k ) *
 546                      p_picture->p[0].i_pitch + (i_band_width*i +j) )
 547                                     = 0xff;
 548
 549                     *(p_picture->p[1].p_pixels +
 550                      ( ( p_effect->i_height - i_line ) / 2 -1 -k/2 ) *
 551                      p_picture->p[1].i_pitch +
 552                     ( ( i_band_width * i + j ) /2  ) )
 553                                     = 0x00;
 554
 555                    if( 0x04 * (i_line + k ) - 0x0f > 0 )
 556                    {
 557                        if ( 0x04 * (i_line + k ) -0x0f < 0xff)
 558                            *(p_picture->p[2].p_pixels  +
 559                             ( ( p_effect->i_height - i_line ) / 2 - 1 -k/2 ) *
 560                              p_picture->p[2].i_pitch +
 561                              ( ( i_band_width * i + j ) /2  ) )
 562                                     = ( 0x04 * ( i_line + k ) ) -0x0f ;
 563                        else
 564                            *(p_picture->p[2].p_pixels  +
 565                             ( ( p_effect->i_height - i_line ) / 2 - 1 -k/2 ) *
 566                              p_picture->p[2].i_pitch +
 567                              ( ( i_band_width * i + j ) /2  ) )
 568                                     = 0xff;
 569                    }
 570                    else
 571                    {
 572                         *(p_picture->p[2].p_pixels  +
 573                          ( ( p_effect->i_height - i_line ) / 2 - 1 -k/2 ) *
 574                          p_picture->p[2].i_pitch +
 575                          ( ( i_band_width * i + j ) /2  ) )
 576                                = 0x10 ;
 577                    }
 578                }
 579             }
 580         }
 581         if(height[i] * i_amp > p_effect->i_height)
 582             height[i] = floor(p_effect->i_height / i_amp );
 583
 584         for(i_line = 0 ; i_line < i_amp * height[i]; i_line ++ )
 585         {
 586             for( j = 0 ; j< i_band_width - i_separ ; j++)
 587             {
 588                *(p_picture->p[0].p_pixels +
 589                  (p_effect->i_height - i_line -1) *
 590                   p_picture->p[0].i_pitch + (i_band_width*i +j) ) = 0xff;
 591
 592                 *(p_picture->p[1].p_pixels +
 593                  ( ( p_effect->i_height - i_line ) / 2 -1) *
 594                  p_picture->p[1].i_pitch +
 595                  ( ( i_band_width * i + j ) /2  ) ) = 0x00;
 596
 597                if( 0x04 * i_line - 0x0f > 0 )
 598                {
 599                     if( 0x04 * i_line - 0x0f < 0xff )
 600                          *(p_picture->p[2].p_pixels  +
 601                           ( ( p_effect->i_height - i_line ) / 2 - 1) *
 602                            p_picture->p[2].i_pitch +
 603                            ( ( i_band_width * i + j ) /2  ) ) =
 604                                ( 0x04 * i_line) -0x0f ;
 605                     else
 606                          *(p_picture->p[2].p_pixels  +
 607                           ( ( p_effect->i_height - i_line ) / 2 - 1) *
 608                            p_picture->p[2].i_pitch +
 609                            ( ( i_band_width * i + j ) /2  ) ) =
 610                                        0xff;
 611                }
 612                else
 613                {
 614                     *(p_picture->p[2].p_pixels  +
 615                      ( ( p_effect->i_height - i_line ) / 2 - 1) *
 616                      p_picture->p[2].i_pitch +
 617                      ( ( i_band_width * i + j ) /2  ) ) =
 618                             0x10 ;
 619                }
 620             }
 621         }
 622         }
 623     }
 624
 625     band_sep_angle = 360.0 / i_nb_bands;
 626     section_sep_angle = 360.0 / i_sections;
 627     if( i_peak_height < 1 )
 628         i_peak_height = 1;
 629     max_band_length = p_effect->i_height / 2 - ( i_rad + i_peak_height + 1 );
 630
 631     i_band_width = floor( 360 / i_nb_bands - i_separ );
 632     if( i_band_width < 1 )
 633         i_band_width = 1;
 634
 635     for( c = 0 ; c < i_sections ; c++ )
 636     for( i = 0 ; i < (i_nb_bands / i_sections) ; i++ )
 637     {
 638         /* DO A PEAK */
 639         if( peaks[i] > 0 && i_peak )
 640         {
 641             if( peaks[i] >= p_effect->i_height )
 642                 peaks[i] = p_effect->i_height - 2;
 643             i_line = peaks[i];
 644
 645             /* circular line pattern(so color blend is more visible) */
 646             for( j = 0 ; j < i_peak_height ; j++ )
 647             {
 648                 //x = p_picture->p[0].i_pitch / 2;
 649                 x = p_effect->i_width / 2;
 650                 y = p_effect->i_height / 2;
 651                 xx = x;
 652                 yy = y;
 653                 for( k = 0 ; k < (i_band_width + i_extra_width) ; k++ )
 654                 {
 655                     x = xx;
 656                     y = yy;
 657                     a = ( (i+1) * band_sep_angle + section_sep_angle * (c+1) + k )
 658                         * 3.141592 / 180.0;
 659                     x += (double)( cos(a) * (double)( i_line + j + i_rad ) );
 660                     y += (double)( -sin(a) * (double)( i_line + j + i_rad ) );
 661
 662                     *(p_picture->p[0].p_pixels + x + y * p_picture->p[0].i_pitch
 663                     ) = 255;/* Y(R,G,B); */
 664
 665                     x /= 2;
 666                     y /= 2;
 667
 668                     *(p_picture->p[1].p_pixels + x + y * p_picture->p[1].i_pitch
 669                     ) = 0;/* U(R,G,B); */
 670
 671                     if( 0x04 * (i_line + k ) - 0x0f > 0 )
 672                     {
 673                         if ( 0x04 * (i_line + k ) -0x0f < 0xff)
 674                             *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 675                             ) = ( 0x04 * ( i_line + k ) ) -(color1-1);/* -V(R,G,B); */
 676                         else
 677                             *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 678                             ) = 255;/* V(R,G,B); */
 679                     }
 680                     else
 681                     {
 682                         *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 683                         ) = color1;/* V(R,G,B); */
 684                     }
 685                 }
 686             }
 687         }
 688
 689         if( (height[i] * i_amp) > p_effect->i_height )
 690             height[i] = floor( p_effect->i_height / i_amp );
 691
 692         /* DO BASE OF BAND (mostly makes a circle) */
 693         if( i_show_base != 0 )
 694         {
 695             //x = p_picture->p[0].i_pitch / 2;
 696             x = p_effect->i_width / 2;
 697             y = p_effect->i_height / 2;
 698
 699             a =  ( (i+1) * band_sep_angle + section_sep_angle * (c+1) )
 700                 * 3.141592 / 180.0;
 701             x += (double)( cos(a) * (double)i_rad );/* newb-forceful casting */
 702             y += (double)( -sin(a) * (double)i_rad );
 703
 704             *(p_picture->p[0].p_pixels + x + y * p_picture->p[0].i_pitch
 705             ) = 255;/* Y(R,G,B); */
 706
 707             x /= 2;
 708             y /= 2;
 709
 710             *(p_picture->p[1].p_pixels + x + y * p_picture->p[1].i_pitch
 711             ) = 0;/* U(R,G,B); */
 712
 713             if( 0x04 * i_line - 0x0f > 0 )
 714             {
 715                 if( 0x04 * i_line -0x0f < 0xff)
 716                     *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 717                     ) = ( 0x04 * i_line) -(color1-1);/* -V(R,G,B); */
 718                 else
 719                     *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 720                     ) = 255;/* V(R,G,B); */
 721             }
 722             else
 723             {
 724                 *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 725                 ) = color1;/* V(R,G,B); */
 726             }
 727         }
 728
 729         /* DO A BAND */
 730         if( i_show_bands != 0 )
 731         for( j = 0 ; j < i_band_width ; j++ )
 732         {
 733             x = p_effect->i_width / 2;
 734             y = p_effect->i_height / 2;
 735             xx = x;
 736             yy = y;
 737             a = ( (i+1) * band_sep_angle + section_sep_angle * (c+1) + j )
 738                 * 3.141592/180.0;
 739
 740             for( k = (i_rad+1) ; k < max_band_length ; k++ )
 741             {
 742                 if( (k-i_rad) > height[i] )
 743                     break;/* uhh.. */
 744
 745                 x = xx;
 746                 y = yy;
 747                 x += (double)( cos(a) * (double)k );/* newbed! */
 748                 y += (double)( -sin(a) * (double)k );
 749
 750                 *(p_picture->p[0].p_pixels + x + y * p_picture->p[0].i_pitch
 751                 ) = 255;
 752
 753                 x /= 2;
 754                 y /= 2;
 755
 756                 *(p_picture->p[1].p_pixels + x + y * p_picture->p[1].i_pitch
 757                 ) = 0;
 758
 759                 if( 0x04 * i_line - 0x0f > 0 )
 760                 {
 761                     if ( 0x04 * i_line -0x0f < 0xff)
 762                         *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 763                         ) = ( 0x04 * i_line) -(color1-1);
 764                     else
 765                         *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 766                         ) = 255;
 767                 }
 768                 else
 769                 {
 770                     *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 771                     ) = color1;
 772                 }
 773             }
 774         }
 775     }
 776
 777     fft_close( p_state );
 778
 779     free( p_s16_buff );
 780     free( height );
 781
 782     return 0;
 783 }
 784
 785
 786 /*****************************************************************************
 787  * scope_Run: scope effect
 788  *****************************************************************************/
 789 int scope_Run(visual_effect_t * p_effect, vlc_object_t *p_aout,
 790               const block_t * p_buffer , picture_t * p_picture)
 791 {
 792     VLC_UNUSED(p_aout);
 793
 794     int i_index;
 795     float *p_sample ;
 796     uint8_t *ppp_area[2][3];
 797
 798     for( i_index = 0 ; i_index < 2 ; i_index++ )
 799     {
 800         for( int j = 0 ; j < 3 ; j++ )
 801         {
 802             ppp_area[i_index][j] =
 803                 p_picture->p[j].p_pixels + i_index * p_picture->p[j].i_lines
 804                 / 2 * p_picture->p[j].i_pitch;
 805         }
 806     }
 807
 808     for( i_index = 0, p_sample = (float *)p_buffer->p_buffer;
 809             i_index < __MIN( p_effect->i_width, (int)p_buffer->i_nb_samples );
 810             i_index++ )
 811     {
 812         uint8_t i_value;
 813
 814         /* Left channel */
 815         i_value =  p_sample[p_effect->i_idx_left] * 127;
 816         *(ppp_area[0][0]
 817                 + p_picture->p[0].i_pitch * i_index / p_effect->i_width
 818                 + p_picture->p[0].i_lines * i_value / 512
 819                 * p_picture->p[0].i_pitch) = 0xbf;
 820         *(ppp_area[0][1]
 821                 + p_picture->p[1].i_pitch * i_index / p_effect->i_width
 822                 + p_picture->p[1].i_lines * i_value / 512
 823                 * p_picture->p[1].i_pitch) = 0xff;
 824
 825
 826         /* Right channel */
 827         i_value = p_sample[p_effect->i_idx_right] * 127;
 828         *(ppp_area[1][0]
 829                 + p_picture->p[0].i_pitch * i_index / p_effect->i_width
 830                 + p_picture->p[0].i_lines * i_value / 512
 831                 * p_picture->p[0].i_pitch) = 0x9f;
 832         *(ppp_area[1][2]
 833                 + p_picture->p[2].i_pitch * i_index / p_effect->i_width
 834                 + p_picture->p[2].i_lines * i_value / 512
 835                 * p_picture->p[2].i_pitch) = 0xdd;
 836
 837         p_sample += p_effect->i_nb_chans;
 838     }
 839     return 0;
 840 }
 841
 842
 843 /*****************************************************************************
 844  * vuMeter_Run: vu meter effect
 845  *****************************************************************************/
 846 int vuMeter_Run(visual_effect_t * p_effect, vlc_object_t *p_aout,
 847                 const block_t * p_buffer , picture_t * p_picture)
 848 {
 849     VLC_UNUSED(p_aout);
 850     int j;
 851     float i_value_l = 0;
 852     float i_value_r = 0;
 853
 854     /* Compute the peack values */
 855     for ( unsigned i = 0 ; i < p_buffer->i_nb_samples; i++ )
 856     {
 857         const float *p_sample = (float *)p_buffer->p_buffer;
 858         float ch;
 859
 860         ch = p_sample[p_effect->i_idx_left] * 256;
 861         if (ch > i_value_l)
 862             i_value_l = ch;
 863
 864         ch = p_sample[p_effect->i_idx_right] * 256;
 865         if (ch > i_value_r)
 866             i_value_r = ch;
 867
 868         p_sample += p_effect->i_nb_chans;
 869     }
 870
 871     i_value_l = abs(i_value_l);
 872     i_value_r = abs(i_value_r);
 873
 874     /* Stay under maximum value admited */
 875     if ( i_value_l > 200 * M_PI_2 )
 876         i_value_l = 200 * M_PI_2;
 877     if ( i_value_r > 200 * M_PI_2 )
 878         i_value_r = 200 * M_PI_2;
 879
 880     float *i_value;
 881
 882     if( !p_effect->p_data )
 883     {
 884         /* Allocate memory to save hand positions */
 885         p_effect->p_data = (void *)malloc( 2 * sizeof(float) );
 886         i_value = p_effect->p_data;
 887         i_value[0] = i_value_l;
 888         i_value[1] = i_value_r;
 889     }
 890     else
 891     {
 892         /* Make the hands go down slowly if the current values are slower
 893            than the previous */
 894         i_value = p_effect->p_data;
 895
 896         if ( i_value_l > i_value[0] - 6 )
 897             i_value[0] = i_value_l;
 898         else
 899             i_value[0] = i_value[0] - 6;
 900
 901         if ( i_value_r > i_value[1] - 6 )
 902             i_value[1] = i_value_r;
 903         else
 904             i_value[1] = i_value[1] - 6;
 905     }
 906
 907     int x, y, k;
 908     float teta;
 909     float teta_grad;
 910
 911     for ( j = 0; j < 2; j++ )
 912     {
 913         /* Draw the two scales */
 914         k = 0;
 915         teta_grad = GRAD_ANGLE_MIN;
 916         for ( teta = -M_PI_4; teta <= M_PI_4; teta = teta + 0.003 )
 917         {
 918             for ( unsigned i = 140; i <= 150; i++ )
 919             {
 920                 y = i * cos(teta) + 20;
 921                 x = i * sin(teta) + 150 + 240 * j;
 922                 /* Compute the last color for the gradation */
 923                 if (teta >= teta_grad + GRAD_INCR && teta_grad <= GRAD_ANGLE_MAX)
 924                 {
 925                     teta_grad = teta_grad + GRAD_INCR;
 926                     k = k + 5;
 927                 }
 928                 *(p_picture->p[0].p_pixels +
 929                         (p_picture->p[0].i_lines - y - 1 ) * p_picture->p[0].i_pitch
 930                         + x ) = 0x45;
 931                 *(p_picture->p[1].p_pixels +
 932                         (p_picture->p[1].i_lines - y / 2 - 1 ) * p_picture->p[1].i_pitch
 933                         + x / 2 ) = 0x0;
 934                 *(p_picture->p[2].p_pixels +
 935                         (p_picture->p[2].i_lines - y / 2 - 1 ) * p_picture->p[2].i_pitch
 936                         + x / 2 ) = 0x4D + k;
 937             }
 938         }
 939
 940         /* Draw the two hands */
 941         teta = (float)i_value[j] / 200 - M_PI_4;
 942         for ( int i = 0; i <= 150; i++ )
 943         {
 944             y = i * cos(teta) + 20;
 945             x = i * sin(teta) + 150 + 240 * j;
 946             *(p_picture->p[0].p_pixels +
 947                     (p_picture->p[0].i_lines - y - 1 ) * p_picture->p[0].i_pitch
 948                     + x ) = 0xAD;
 949             *(p_picture->p[1].p_pixels +
 950                     (p_picture->p[1].i_lines - y / 2 - 1 ) * p_picture->p[1].i_pitch
 951                     + x / 2 ) = 0xFC;
 952             *(p_picture->p[2].p_pixels +
 953                     (p_picture->p[2].i_lines - y / 2 - 1 ) * p_picture->p[2].i_pitch
 954                     + x / 2 ) = 0xAC;
 955         }
 956
 957         /* Draw the hand bases */
 958         for ( teta = -M_PI_2; teta <= M_PI_2 + 0.01; teta = teta + 0.003 )
 959         {
 960             for ( int i = 0; i < 10; i++ )
 961             {
 962                 y = i * cos(teta) + 20;
 963                 x = i * sin(teta) + 150 + 240 * j;
 964                 *(p_picture->p[0].p_pixels +
 965                         (p_picture->p[0].i_lines - y - 1 ) * p_picture->p[0].i_pitch
 966                         + x ) = 0xFF;
 967                 *(p_picture->p[1].p_pixels +
 968                         (p_picture->p[1].i_lines - y / 2 - 1 ) * p_picture->p[1].i_pitch
 969                         + x / 2 ) = 0x80;
 970                 *(p_picture->p[2].p_pixels +
 971                         (p_picture->p[2].i_lines - y / 2 - 1 ) * p_picture->p[2].i_pitch
 972                         + x / 2 ) = 0x80;
 973             }
 974         }
 975
 976     }
 977
 978     return 0;
 979 }