effects.c

video linux conference

                    ( ( i_band_width * i + j ) /2  ) )
                                    = 0x00;

                   if( 0x04 * (i_line + k ) - 0x0f > 0 )
                   {
                       if ( 0x04 * (i_line + k ) -0x0f < 0xff)
                           *(p_picture->p[2].p_pixels  +
                            (p_picture->p[2].i_lines - i_line /2 - 1 -k/2 ) *
                             p_picture->p[2].i_pitch +
                             ( ( i_band_width * i + j ) /2  ) )
                                    = ( 0x04 * ( i_line + k ) ) -0x0f ;
                       else
                           *(p_picture->p[2].p_pixels  +
                            (p_picture->p[2].i_lines - i_line /2 - 1 -k/2 ) *
                             p_picture->p[2].i_pitch +
                             ( ( i_band_width * i + j ) /2  ) )
                                    = 0xff;
                   }
                   else
                   {
                        *(p_picture->p[2].p_pixels  +
                         (p_picture->p[2].i_lines - i_line /2 - 1 -k/2 ) *
                         p_picture->p[2].i_pitch +
                         ( ( i_band_width * i + j ) /2  ) )
                               = 0x10 ;
                   }
               }
            }
        }

        if(height[i] * i_amp > p_effect->i_height)
            height[i] = floor(p_effect->i_height / i_amp );

        for(i_line = 0 ; i_line < i_amp * height[i]; i_line ++ )
        {
            for( j = 0 ; j< i_band_width - i_separ ; j++)
            {
               *(p_picture->p[0].p_pixels +
                 (p_picture->p[0].i_lines - i_line -1) *
                  p_picture->p[0].i_pitch + (i_band_width*i +j) ) = 0xff;

                *(p_picture->p[1].p_pixels +
                 (p_picture->p[1].i_lines - i_line /2 -1) *
                 p_picture->p[1].i_pitch +
                 ( ( i_band_width * i + j ) /2  ) ) = 0x00;

               if( 0x04 * i_line - 0x0f > 0 )
               {
                    if( 0x04 * i_line - 0x0f < 0xff )
                         *(p_picture->p[2].p_pixels  +
                          (p_picture->p[2].i_lines - i_line /2 - 1) *
                           p_picture->p[2].i_pitch +
                           ( ( i_band_width * i + j ) /2  ) ) =
                               ( 0x04 * i_line) -0x0f ;
                    else
                         *(p_picture->p[2].p_pixels  +
                          (p_picture->p[2].i_lines - i_line /2 - 1) *
                           p_picture->p[2].i_pitch +
                           ( ( i_band_width * i + j ) /2  ) ) =
                                       0xff;
               }
               else
               {
                    *(p_picture->p[2].p_pixels  +
                     (p_picture->p[2].i_lines - i_line /2 - 1) *
                     p_picture->p[2].i_pitch +
                     ( ( i_band_width * i + j ) /2  ) ) =
                            0x10 ;
               }
            }
        }
    }

    fft_close( p_state );

    if( p_s16_buff != NULL )
    {
        free( p_s16_buff );
        p_s16_buff = NULL;
    }

    if(height) free(height);

    if(psz_parse) free(psz_parse);

    return 0;
}


/*****************************************************************************
 * scope_Run: scope effect
 *****************************************************************************/
int scope_Run(visual_effect_t * p_effect, aout_instance_t *p_aout,
              aout_buffer_t * p_buffer , picture_t * p_picture)
{
    int i_index;
    float *p_sample ;
    uint8_t *ppp_area[2][3];


        for( i_index = 0 ; i_index < 2 ; i_index++ )
        {
            int j;
            for( j = 0 ; j < 3 ; j++ )
            {
                ppp_area[i_index][j] =
                    p_picture->p[j].p_pixels + i_index * p_picture->p[j].i_lines
                                / 2 * p_picture->p[j].i_pitch;
            }
        }

        for( i_index = 0, p_sample = (float *)p_buffer->p_buffer;
             i_index < p_effect->i_width;
             i_index++ )
        {
            uint8_t i_value;

            /* Left channel */
            i_value =  (*p_sample++ +1) * 127;
            *(ppp_area[0][0]
               + p_picture->p[0].i_pitch * i_index / p_effect->i_width
               + p_picture->p[0].i_lines * i_value / 512
                   * p_picture->p[0].i_pitch) = 0xbf;
            *(ppp_area[0][1]
                + p_picture->p[1].i_pitch * i_index / p_effect->i_width
                + p_picture->p[1].i_lines * i_value / 512
                   * p_picture->p[1].i_pitch) = 0xff;


           /* Right channel */
           i_value = ( *p_sample++ +1 ) * 127;
           *(ppp_area[1][0]
              + p_picture->p[0].i_pitch * i_index / p_effect->i_width
              + p_picture->p[0].i_lines * i_value / 512
                 * p_picture->p[0].i_pitch) = 0x9f;
           *(ppp_area[1][2]
              + p_picture->p[2].i_pitch * i_index / p_effect->i_width
              + p_picture->p[2].i_lines * i_value / 512
                * p_picture->p[2].i_pitch) = 0xdd;
        }
        return 0;
}


/*****************************************************************************
 * random_Run:  random plots display effect
 *****************************************************************************/
int random_Run(visual_effect_t * p_effect, aout_instance_t *p_aout,
              aout_buffer_t * p_buffer , picture_t * p_picture)
{
    int i_nb_plots;
    char *psz_parse= NULL;
    int i , i_y , i_u , i_v;
    int i_position;
    srand((unsigned int)mdate());

    if( p_effect->psz_args )
    {
        psz_parse = strdup( p_effect->psz_args );
        i_nb_plots = config_GetInt ( p_aout, "visual-stars" );
    }
    else
    {
        i_nb_plots = 200;
    }

    for( i = 0 ; i < i_nb_plots ; i++ )
    {
        i_position = rand() % (p_effect->i_width * p_effect->i_height );
        i_y = rand() % 256;
        i_u = rand() % 256;
        i_v = rand() % 256;
        *(p_picture->p[0].p_pixels + i_position )= i_u;
        *(p_picture->p[1].p_pixels + i_position/4) = i_v;
        *(p_picture->p[2].p_pixels + i_position/4) = i_y;
    }
    return 0;
}

/*****************************************************************************
 * blur_Run:  blur effect
 *****************************************************************************/
#if 0
  /* This code is totally crappy */
int blur_Run(visual_effect_t * p_effect, aout_instance_t *p_aout,
              aout_buffer_t * p_buffer , picture_t * p_picture)
{
    uint8_t * p_pictures;
    int i,j;
    int i_size;   /* Total size of one image */

    i_size = (p_picture->p[0].i_pitch * p_picture->p[0].i_lines +
              p_picture->p[1].i_pitch * p_picture->p[1].i_lines +
              p_picture->p[2].i_pitch * p_picture->p[2].i_lines );

    if( !p_effect->p_data )
    {
        p_effect->p_data=(void *)malloc( 5 * i_size *sizeof(uint8_t));

        if( !p_effect->p_data)
        {
            msg_Err(p_aout,"Out of memory");
            return -1;
        }
        p_pictures = (uint8_t *)p_effect->p_data;
    }
    else
    {
        p_pictures =(uint8_t *)p_effect->p_data;
    }

    for( i = 0 ; i < 5 ; i++)
    {
        for ( j = 0 ; j< p_picture->p[0].i_pitch * p_picture->p[0].i_lines; i++)
            p_picture->p[0].p_pixels[j] =
                    p_pictures[i * i_size + j] * (100 - 20 * i) /100 ;
        for ( j = 0 ; j< p_picture->p[1].i_pitch * p_picture->p[1].i_lines; i++)
            p_picture->p[1].p_pixels[j] =
                    p_pictures[i * i_size +
                    p_picture->p[0].i_pitch * p_picture->p[0].i_lines + j ];
        for ( j = 0 ; j< p_picture->p[2].i_pitch * p_picture->p[2].i_lines; i++)
            p_picture->p[2].p_pixels[j] =
                    p_pictures[i * i_size +
                    p_picture->p[0].i_pitch * p_picture->p[0].i_lines +
                    p_picture->p[1].i_pitch * p_picture->p[1].i_lines
                    + j ];
    }

    memcpy ( &p_pictures[ i_size ] , &p_pictures[0] , 4 * i_size * sizeof(uint8_t) );
}
#endif