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 = var_InheritInteger( p_aout, "visual-80-bands" );
 133     i_peak     = var_InheritInteger( 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 = 0;
 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     /* Create the data struct if needed */
 400     spectrometer_data *p_data = p_effect->p_data;
 401     if( !p_data )
 402     {
 403         p_data = malloc( sizeof(spectrometer_data) );
 404         if( !p_data )
 405             return -1;
 406         p_data->peaks = calloc( 80, sizeof(int) );
 407         if( !p_data->peaks )
 408         {
 409             free( p_data );
 410             return -1;
 411         }
 412         p_data->i_prev_nb_samples = 0;
 413         p_data->p_prev_s16_buff = NULL;
 414         p_effect->p_data = (void*)p_data;
 415     }
 416     peaks = p_data->peaks;
 417
 418     /* Allocate the buffer only if the number of samples change */
 419     if( p_buffer->i_nb_samples != p_data->i_prev_nb_samples )
 420     {
 421         free( p_data->p_prev_s16_buff );
 422         p_data->p_prev_s16_buff = malloc( p_buffer->i_nb_samples *
 423                                           p_effect->i_nb_chans *
 424                                           sizeof(int16_t));
 425         p_data->i_prev_nb_samples = p_buffer->i_nb_samples;
 426         if( !p_data->p_prev_s16_buff )
 427             return -1;
 428     }
 429     p_buffs = p_s16_buff = p_data->p_prev_s16_buff;
 430
 431     i_original     = var_InheritInteger( p_aout, "spect-show-original" );
 432     i_80_bands     = var_InheritInteger( p_aout, "spect-80-bands" );
 433     i_separ        = var_InheritInteger( p_aout, "spect-separ" );
 434     i_amp          = var_InheritInteger( p_aout, "spect-amp" );
 435     i_peak         = var_InheritInteger( p_aout, "spect-show-peaks" );
 436     i_show_base    = var_InheritInteger( p_aout, "spect-show-base" );
 437     i_show_bands   = var_InheritInteger( p_aout, "spect-show-bands" );
 438     i_rad          = var_InheritInteger( p_aout, "spect-radius" );
 439     i_sections     = var_InheritInteger( p_aout, "spect-sections" );
 440     i_extra_width  = var_InheritInteger( p_aout, "spect-peak-width" );
 441     i_peak_height  = var_InheritInteger( p_aout, "spect-peak-height" );
 442     color1         = var_InheritInteger( p_aout, "spect-color" );
 443
 444     if( i_80_bands != 0)
 445     {
 446         xscale = xscale2;
 447         i_nb_bands = 80;
 448     }
 449     else
 450     {
 451         xscale = xscale1;
 452         i_nb_bands = 20;
 453     }
 454
 455     height = malloc( i_nb_bands * sizeof(int) );
 456     if( !height)
 457         return -1;
 458
 459     /* Convert the buffer to int16_t  */
 460     /* Pasted from float32tos16.c */
 461     for (i = p_buffer->i_nb_samples * p_effect->i_nb_chans; i--; )
 462     {
 463         union { float f; int32_t i; } u;
 464         u.f = *p_buffl + 384.0;
 465         if(u.i >  0x43c07fff ) * p_buffs = 32767;
 466         else if ( u.i < 0x43bf8000 ) *p_buffs = -32768;
 467         else *p_buffs = u.i - 0x43c00000;
 468
 469         p_buffl++ ; p_buffs++ ;
 470     }
 471     p_state  = visual_fft_init();
 472     if( !p_state)
 473     {
 474         msg_Err(p_aout,"unable to initialize FFT transform");
 475         free( height );
 476         return -1;
 477     }
 478     p_buffs = p_s16_buff;
 479     for ( i = 0 ; i < FFT_BUFFER_SIZE; i++)
 480     {
 481         p_output[i]    = 0;
 482         p_buffer1[i] = *p_buffs;
 483
 484         p_buffs += p_effect->i_nb_chans;
 485         if( p_buffs >= &p_s16_buff[p_buffer->i_nb_samples * p_effect->i_nb_chans] )
 486             p_buffs = p_s16_buff;
 487     }
 488     fft_perform( p_buffer1, p_output, p_state);
 489     for(i = 0; i < FFT_BUFFER_SIZE; i++)
 490     {
 491         int sqrti = sqrt(p_output[i]);
 492         p_dest[i] = sqrti >> 8;
 493     }
 494
 495     i_nb_bands *= i_sections;
 496
 497     for ( i = 0 ; i< i_nb_bands/i_sections ;i++)
 498     {
 499         /* We search the maximum on one scale */
 500         for( j = xscale[i] , y=0 ; j< xscale[ i + 1 ] ; j++ )
 501         {
 502             if ( p_dest[j] > y )
 503                  y = p_dest[j];
 504         }
 505         /* Calculate the height of the bar */
 506         y >>=7;/* remove some noise */
 507         if( y != 0)
 508         {
 509             int logy = log(y);
 510             height[i] = logy * y_scale;
 511             if(height[i] > 150)
 512                 height[i] = 150;
 513         }
 514         else
 515         {
 516             height[i] = 0 ;
 517         }
 518
 519         /* Draw the bar now */
 520         i_band_width = floor( p_effect->i_width / (i_nb_bands/i_sections)) ;
 521
 522         if( i_amp * height[i] > peaks[i])
 523         {
 524             peaks[i] = i_amp * height[i];
 525         }
 526         else if (peaks[i] > 0 )
 527         {
 528             peaks[i] -= PEAK_SPEED;
 529             if( peaks[i] < i_amp * height[i] )
 530             {
 531                 peaks[i] = i_amp * height[i];
 532             }
 533             if( peaks[i] < 0 )
 534             {
 535                 peaks[i] = 0;
 536             }
 537         }
 538
 539         if( i_original != 0 )
 540         {
 541         if( peaks[i] > 0 && i_peak )
 542         {
 543             if( peaks[i] >= p_effect->i_height )
 544                 peaks[i] = p_effect->i_height - 2;
 545             i_line = peaks[i];
 546
 547             for( j = 0 ; j< i_band_width - i_separ; j++)
 548             {
 549                for( k = 0 ; k< 3 ; k ++)
 550                {
 551                    //* Draw the peak
 552                      *(p_picture->p[0].p_pixels +
 553                     (p_effect->i_height - i_line -1 -k ) *
 554                      p_picture->p[0].i_pitch + (i_band_width*i +j) )
 555                                     = 0xff;
 556
 557                     *(p_picture->p[1].p_pixels +
 558                      ( ( p_effect->i_height - i_line ) / 2 -1 -k/2 ) *
 559                      p_picture->p[1].i_pitch +
 560                     ( ( i_band_width * i + j ) /2  ) )
 561                                     = 0x00;
 562
 563                    if( 0x04 * (i_line + k ) - 0x0f > 0 )
 564                    {
 565                        if ( 0x04 * (i_line + k ) -0x0f < 0xff)
 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                                     = ( 0x04 * ( i_line + k ) ) -0x0f ;
 571                        else
 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                                     = 0xff;
 577                    }
 578                    else
 579                    {
 580                         *(p_picture->p[2].p_pixels  +
 581                          ( ( p_effect->i_height - i_line ) / 2 - 1 -k/2 ) *
 582                          p_picture->p[2].i_pitch +
 583                          ( ( i_band_width * i + j ) /2  ) )
 584                                = 0x10 ;
 585                    }
 586                }
 587             }
 588         }
 589         if(height[i] * i_amp > p_effect->i_height)
 590             height[i] = floor(p_effect->i_height / i_amp );
 591
 592         for(i_line = 0 ; i_line < i_amp * height[i]; i_line ++ )
 593         {
 594             for( j = 0 ; j< i_band_width - i_separ ; j++)
 595             {
 596                *(p_picture->p[0].p_pixels +
 597                  (p_effect->i_height - i_line -1) *
 598                   p_picture->p[0].i_pitch + (i_band_width*i +j) ) = 0xff;
 599
 600                 *(p_picture->p[1].p_pixels +
 601                  ( ( p_effect->i_height - i_line ) / 2 -1) *
 602                  p_picture->p[1].i_pitch +
 603                  ( ( i_band_width * i + j ) /2  ) ) = 0x00;
 604
 605                if( 0x04 * i_line - 0x0f > 0 )
 606                {
 607                     if( 0x04 * i_line - 0x0f < 0xff )
 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                                ( 0x04 * i_line) -0x0f ;
 613                     else
 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                                        0xff;
 619                }
 620                else
 621                {
 622                     *(p_picture->p[2].p_pixels  +
 623                      ( ( p_effect->i_height - i_line ) / 2 - 1) *
 624                      p_picture->p[2].i_pitch +
 625                      ( ( i_band_width * i + j ) /2  ) ) =
 626                             0x10 ;
 627                }
 628             }
 629         }
 630         }
 631     }
 632
 633     band_sep_angle = 360.0 / i_nb_bands;
 634     section_sep_angle = 360.0 / i_sections;
 635     if( i_peak_height < 1 )
 636         i_peak_height = 1;
 637     max_band_length = p_effect->i_height / 2 - ( i_rad + i_peak_height + 1 );
 638
 639     i_band_width = floor( 360 / i_nb_bands - i_separ );
 640     if( i_band_width < 1 )
 641         i_band_width = 1;
 642
 643     for( c = 0 ; c < i_sections ; c++ )
 644     for( i = 0 ; i < (i_nb_bands / i_sections) ; i++ )
 645     {
 646         /* DO A PEAK */
 647         if( peaks[i] > 0 && i_peak )
 648         {
 649             if( peaks[i] >= p_effect->i_height )
 650                 peaks[i] = p_effect->i_height - 2;
 651             i_line = peaks[i];
 652
 653             /* circular line pattern(so color blend is more visible) */
 654             for( j = 0 ; j < i_peak_height ; j++ )
 655             {
 656                 //x = p_picture->p[0].i_pitch / 2;
 657                 x = p_effect->i_width / 2;
 658                 y = p_effect->i_height / 2;
 659                 xx = x;
 660                 yy = y;
 661                 for( k = 0 ; k < (i_band_width + i_extra_width) ; k++ )
 662                 {
 663                     x = xx;
 664                     y = yy;
 665                     a = ( (i+1) * band_sep_angle + section_sep_angle * (c+1) + k )
 666                         * 3.141592 / 180.0;
 667                     x += (double)( cos(a) * (double)( i_line + j + i_rad ) );
 668                     y += (double)( -sin(a) * (double)( i_line + j + i_rad ) );
 669
 670                     *(p_picture->p[0].p_pixels + x + y * p_picture->p[0].i_pitch
 671                     ) = 255;/* Y(R,G,B); */
 672
 673                     x /= 2;
 674                     y /= 2;
 675
 676                     *(p_picture->p[1].p_pixels + x + y * p_picture->p[1].i_pitch
 677                     ) = 0;/* U(R,G,B); */
 678
 679                     if( 0x04 * (i_line + k ) - 0x0f > 0 )
 680                     {
 681                         if ( 0x04 * (i_line + k ) -0x0f < 0xff)
 682                             *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 683                             ) = ( 0x04 * ( i_line + k ) ) -(color1-1);/* -V(R,G,B); */
 684                         else
 685                             *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 686                             ) = 255;/* V(R,G,B); */
 687                     }
 688                     else
 689                     {
 690                         *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 691                         ) = color1;/* V(R,G,B); */
 692                     }
 693                 }
 694             }
 695         }
 696
 697         if( (height[i] * i_amp) > p_effect->i_height )
 698             height[i] = floor( p_effect->i_height / i_amp );
 699
 700         /* DO BASE OF BAND (mostly makes a circle) */
 701         if( i_show_base != 0 )
 702         {
 703             //x = p_picture->p[0].i_pitch / 2;
 704             x = p_effect->i_width / 2;
 705             y = p_effect->i_height / 2;
 706
 707             a =  ( (i+1) * band_sep_angle + section_sep_angle * (c+1) )
 708                 * 3.141592 / 180.0;
 709             x += (double)( cos(a) * (double)i_rad );/* newb-forceful casting */
 710             y += (double)( -sin(a) * (double)i_rad );
 711
 712             *(p_picture->p[0].p_pixels + x + y * p_picture->p[0].i_pitch
 713             ) = 255;/* Y(R,G,B); */
 714
 715             x /= 2;
 716             y /= 2;
 717
 718             *(p_picture->p[1].p_pixels + x + y * p_picture->p[1].i_pitch
 719             ) = 0;/* U(R,G,B); */
 720
 721             if( 0x04 * i_line - 0x0f > 0 )
 722             {
 723                 if( 0x04 * i_line -0x0f < 0xff)
 724                     *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 725                     ) = ( 0x04 * i_line) -(color1-1);/* -V(R,G,B); */
 726                 else
 727                     *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 728                     ) = 255;/* V(R,G,B); */
 729             }
 730             else
 731             {
 732                 *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 733                 ) = color1;/* V(R,G,B); */
 734             }
 735         }
 736
 737         /* DO A BAND */
 738         if( i_show_bands != 0 )
 739         for( j = 0 ; j < i_band_width ; j++ )
 740         {
 741             x = p_effect->i_width / 2;
 742             y = p_effect->i_height / 2;
 743             xx = x;
 744             yy = y;
 745             a = ( (i+1) * band_sep_angle + section_sep_angle * (c+1) + j )
 746                 * 3.141592/180.0;
 747
 748             for( k = (i_rad+1) ; k < max_band_length ; k++ )
 749             {
 750                 if( (k-i_rad) > height[i] )
 751                     break;/* uhh.. */
 752
 753                 x = xx;
 754                 y = yy;
 755                 x += (double)( cos(a) * (double)k );/* newbed! */
 756                 y += (double)( -sin(a) * (double)k );
 757
 758                 *(p_picture->p[0].p_pixels + x + y * p_picture->p[0].i_pitch
 759                 ) = 255;
 760
 761                 x /= 2;
 762                 y /= 2;
 763
 764                 *(p_picture->p[1].p_pixels + x + y * p_picture->p[1].i_pitch
 765                 ) = 0;
 766
 767                 if( 0x04 * i_line - 0x0f > 0 )
 768                 {
 769                     if ( 0x04 * i_line -0x0f < 0xff)
 770                         *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 771                         ) = ( 0x04 * i_line) -(color1-1);
 772                     else
 773                         *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 774                         ) = 255;
 775                 }
 776                 else
 777                 {
 778                     *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch
 779                     ) = color1;
 780                 }
 781             }
 782         }
 783     }
 784
 785     fft_close( p_state );
 786
 787     free( height );
 788
 789     return 0;
 790 }
 791
 792
 793 /*****************************************************************************
 794  * scope_Run: scope effect
 795  *****************************************************************************/
 796 int scope_Run(visual_effect_t * p_effect, vlc_object_t *p_aout,
 797               const block_t * p_buffer , picture_t * p_picture)
 798 {
 799     VLC_UNUSED(p_aout);
 800
 801     int i_index;
 802     float *p_sample ;
 803     uint8_t *ppp_area[2][3];
 804
 805     for( i_index = 0 ; i_index < 2 ; i_index++ )
 806     {
 807         for( int j = 0 ; j < 3 ; j++ )
 808         {
 809             ppp_area[i_index][j] =
 810                 p_picture->p[j].p_pixels + i_index * p_picture->p[j].i_lines
 811                 / 2 * p_picture->p[j].i_pitch;
 812         }
 813     }
 814
 815     for( i_index = 0, p_sample = (float *)p_buffer->p_buffer;
 816             i_index < __MIN( p_effect->i_width, (int)p_buffer->i_nb_samples );
 817             i_index++ )
 818     {
 819         uint8_t i_value;
 820
 821         /* Left channel */
 822         i_value =  p_sample[p_effect->i_idx_left] * 127;
 823         *(ppp_area[0][0]
 824                 + p_picture->p[0].i_pitch * i_index / p_effect->i_width
 825                 + p_picture->p[0].i_lines * i_value / 512
 826                 * p_picture->p[0].i_pitch) = 0xbf;
 827         *(ppp_area[0][1]
 828                 + p_picture->p[1].i_pitch * i_index / p_effect->i_width
 829                 + p_picture->p[1].i_lines * i_value / 512
 830                 * p_picture->p[1].i_pitch) = 0xff;
 831
 832
 833         /* Right channel */
 834         i_value = p_sample[p_effect->i_idx_right] * 127;
 835         *(ppp_area[1][0]
 836                 + p_picture->p[0].i_pitch * i_index / p_effect->i_width
 837                 + p_picture->p[0].i_lines * i_value / 512
 838                 * p_picture->p[0].i_pitch) = 0x9f;
 839         *(ppp_area[1][2]
 840                 + p_picture->p[2].i_pitch * i_index / p_effect->i_width
 841                 + p_picture->p[2].i_lines * i_value / 512
 842                 * p_picture->p[2].i_pitch) = 0xdd;
 843
 844         p_sample += p_effect->i_nb_chans;
 845     }
 846     return 0;
 847 }
 848
 849
 850 /*****************************************************************************
 851  * vuMeter_Run: vu meter effect
 852  *****************************************************************************/
 853 int vuMeter_Run(visual_effect_t * p_effect, vlc_object_t *p_aout,
 854                 const block_t * p_buffer , picture_t * p_picture)
 855 {
 856     VLC_UNUSED(p_aout);
 857     float i_value_l = 0;
 858     float i_value_r = 0;
 859
 860     /* Compute the peack values */
 861     for ( unsigned 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 = 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;
 914     float teta;
 915     float teta_grad;
 916
 917     int start_x = p_effect->i_width / 2 - 120; /* i_width.min = 532 (visual.c) */
 918
 919     for ( int j = 0; j < 2; j++ )
 920     {
 921         /* Draw the two scales */
 922         int k = 0;
 923         teta_grad = GRAD_ANGLE_MIN;
 924         for ( teta = -M_PI_4; teta <= M_PI_4; teta = teta + 0.003 )
 925         {
 926             for ( unsigned i = 140; i <= 150; i++ )
 927             {
 928                 y = i * cos(teta) + 20;
 929                 x = i * sin(teta) + start_x + 240 * j;
 930                 /* Compute the last color for the gradation */
 931                 if (teta >= teta_grad + GRAD_INCR && teta_grad <= GRAD_ANGLE_MAX)
 932                 {
 933                     teta_grad = teta_grad + GRAD_INCR;
 934                     k = k + 5;
 935                 }
 936                 *(p_picture->p[0].p_pixels +
 937                         (p_picture->p[0].i_lines - y - 1 ) * p_picture->p[0].i_pitch
 938                         + x ) = 0x45;
 939                 *(p_picture->p[1].p_pixels +
 940                         (p_picture->p[1].i_lines - y / 2 - 1 ) * p_picture->p[1].i_pitch
 941                         + x / 2 ) = 0x0;
 942                 *(p_picture->p[2].p_pixels +
 943                         (p_picture->p[2].i_lines - y / 2 - 1 ) * p_picture->p[2].i_pitch
 944                         + x / 2 ) = 0x4D + k;
 945             }
 946         }
 947
 948         /* Draw the two hands */
 949         teta = (float)i_value[j] / 200 - M_PI_4;
 950         for ( int i = 0; i <= 150; i++ )
 951         {
 952             y = i * cos(teta) + 20;
 953             x = i * sin(teta) + start_x + 240 * j;
 954             *(p_picture->p[0].p_pixels +
 955                     (p_picture->p[0].i_lines - y - 1 ) * p_picture->p[0].i_pitch
 956                     + x ) = 0xAD;
 957             *(p_picture->p[1].p_pixels +
 958                     (p_picture->p[1].i_lines - y / 2 - 1 ) * p_picture->p[1].i_pitch
 959                     + x / 2 ) = 0xFC;
 960             *(p_picture->p[2].p_pixels +
 961                     (p_picture->p[2].i_lines - y / 2 - 1 ) * p_picture->p[2].i_pitch
 962                     + x / 2 ) = 0xAC;
 963         }
 964
 965         /* Draw the hand bases */
 966         for ( teta = -M_PI_2; teta <= M_PI_2 + 0.01; teta = teta + 0.003 )
 967         {
 968             for ( int i = 0; i < 10; i++ )
 969             {
 970                 y = i * cos(teta) + 20;
 971                 x = i * sin(teta) + start_x + 240 * j;
 972                 *(p_picture->p[0].p_pixels +
 973                         (p_picture->p[0].i_lines - y - 1 ) * p_picture->p[0].i_pitch
 974                         + x ) = 0xFF;
 975                 *(p_picture->p[1].p_pixels +
 976                         (p_picture->p[1].i_lines - y / 2 - 1 ) * p_picture->p[1].i_pitch
 977                         + x / 2 ) = 0x80;
 978                 *(p_picture->p[2].p_pixels +
 979                         (p_picture->p[2].i_lines - y / 2 - 1 ) * p_picture->p[2].i_pitch
 980                         + x / 2 ) = 0x80;
 981             }
 982         }
 983
 984     }
 985
 986     return 0;
 987 }