/***************************************************************************** * effects.c : Effects for the visualization system ***************************************************************************** * Copyright (C) 2002-2009 VLC authors and VideoLAN * $Id$ * * Authors: Clément Stenac * Adrien Maglo * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation; either version 2.1 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with this program; if not, write to the Free Software Foundation, * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA. *****************************************************************************/ /***************************************************************************** * Preamble *****************************************************************************/ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include #include #include #include "visual.h" #include #include "fft.h" #include "window.h" #define PEAK_SPEED 1 #define BAR_DECREASE_SPEED 5 #define GRAD_ANGLE_MIN 0.2 #define GRAD_ANGLE_MAX 0.5 #define GRAD_INCR 0.01 #define LOG_OFFSET 0.1 /***************************************************************************** * dummy_Run *****************************************************************************/ static int dummy_Run( visual_effect_t * p_effect, vlc_object_t *p_aout, const block_t * p_buffer , picture_t * p_picture) { VLC_UNUSED(p_effect); VLC_UNUSED(p_aout); VLC_UNUSED(p_buffer); VLC_UNUSED(p_picture); return 0; } static void dummy_Free( void *data ) { VLC_UNUSED(data); } /***************************************************************************** * spectrum_Run: spectrum analyser *****************************************************************************/ typedef struct spectrum_data { int *peaks; int *prev_heights; unsigned i_prev_nb_samples; int16_t *p_prev_s16_buff; window_param wind_param; } spectrum_data; static int spectrum_Run(visual_effect_t * p_effect, vlc_object_t *p_aout, const block_t * p_buffer , picture_t * p_picture) { spectrum_data *p_data = p_effect->p_data; float p_output[FFT_BUFFER_SIZE]; /* Raw FFT Result */ int *height; /* Bar heights */ int *peaks; /* Peaks */ int *prev_heights; /* Previous bar heights */ int i_80_bands; /* number of bands : 80 if true else 20 */ int i_nb_bands; /* number of bands : 80 or 20 */ int i_band_width; /* width of bands */ int i_start; /* first band horizontal position */ int i_peak; /* Should we draw peaks ? */ /* Horizontal scale for 20-band equalizer */ const int xscale1[]={0,1,2,3,4,5,6,7,8,11,15,20,27, 36,47,62,82,107,141,184,255}; /* Horizontal scale for 80-band equalizer */ const int xscale2[] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18, 19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34, 35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51, 52,53,54,55,56,57,58,59,61,63,67,72,77,82,87,93,99,105, 110,115,121,130,141,152,163,174,185,200,255}; const int *xscale; fft_state *p_state; /* internal FFT data */ DEFINE_WIND_CONTEXT( wind_ctx ); /* internal window data */ int i , j , y , k; int i_line; uint16_t p_dest[FFT_BUFFER_SIZE]; /* Adapted FFT result */ int16_t p_buffer1[FFT_BUFFER_SIZE]; /* Buffer on which we perform the FFT (first channel) */ float *p_buffl = /* Original buffer */ (float*)p_buffer->p_buffer; int16_t *p_buffs; /* int16_t converted buffer */ int16_t *p_s16_buff; /* int16_t converted buffer */ if (!p_buffer->i_nb_samples) { msg_Err(p_aout, "no samples yet"); return -1; } /* Create p_data if needed */ if( !p_data ) { p_effect->p_data = p_data = malloc( sizeof( spectrum_data ) ); if( !p_data ) return -1; p_data->peaks = calloc( 80, sizeof(int) ); p_data->prev_heights = calloc( 80, sizeof(int) ); p_data->i_prev_nb_samples = 0; p_data->p_prev_s16_buff = NULL; window_get_param( p_aout, &p_data->wind_param ); } peaks = (int *)p_data->peaks; prev_heights = (int *)p_data->prev_heights; /* Allocate the buffer only if the number of samples change */ if( p_buffer->i_nb_samples != p_data->i_prev_nb_samples ) { free( p_data->p_prev_s16_buff ); p_data->p_prev_s16_buff = vlc_alloc( p_buffer->i_nb_samples * p_effect->i_nb_chans, sizeof(int16_t)); p_data->i_prev_nb_samples = p_buffer->i_nb_samples; if( !p_data->p_prev_s16_buff ) return -1; } p_buffs = p_s16_buff = p_data->p_prev_s16_buff; i_80_bands = var_InheritInteger( p_aout, "visual-80-bands" ); i_peak = var_InheritInteger( p_aout, "visual-peaks" ); if( i_80_bands != 0) { xscale = xscale2; i_nb_bands = 80; } else { xscale = xscale1; i_nb_bands = 20; } height = vlc_alloc( i_nb_bands, sizeof(int) ); if( !height ) { return -1; } /* Convert the buffer to int16_t */ /* Pasted from float32tos16.c */ for (i = p_buffer->i_nb_samples * p_effect->i_nb_chans; i--; ) { union { float f; int32_t i; } u; u.f = *p_buffl + 384.0; if(u.i > 0x43c07fff ) * p_buffs = 32767; else if ( u.i < 0x43bf8000 ) *p_buffs = -32768; else *p_buffs = u.i - 0x43c00000; p_buffl++ ; p_buffs++ ; } p_state = visual_fft_init(); if( !p_state) { free( height ); msg_Err(p_aout,"unable to initialize FFT transform"); return -1; } if( !window_init( FFT_BUFFER_SIZE, &p_data->wind_param, &wind_ctx ) ) { fft_close( p_state ); free( height ); msg_Err(p_aout,"unable to initialize FFT window"); return -1; } p_buffs = p_s16_buff; for ( i = 0 ; i < FFT_BUFFER_SIZE ; i++) { p_output[i] = 0; p_buffer1[i] = *p_buffs; p_buffs += p_effect->i_nb_chans; if( p_buffs >= &p_s16_buff[p_buffer->i_nb_samples * p_effect->i_nb_chans] ) p_buffs = p_s16_buff; } window_scale_in_place( p_buffer1, &wind_ctx ); fft_perform( p_buffer1, p_output, p_state); for( i = 0; i< FFT_BUFFER_SIZE ; i++ ) { /* Scale the output between 0 and UINT16MAX */ p_dest[i] = p_output[i] * UINT16_MAX / FFT_SCALING_VALUE; } /* Compute the horizontal position of the first band */ i_band_width = floor( p_effect->i_width / i_nb_bands); i_start = ( p_effect->i_width - i_band_width * i_nb_bands ) / 2; for ( i = 0 ; i < i_nb_bands ;i++) { /* We search the maximum on one scale */ for( j = xscale[i], y = 0; j< xscale[ i + 1 ]; j++ ) { if ( p_dest[j] > y ) y = p_dest[j]; } /* Calculate the height of the bar This log_offset makes it possible to display low values */ if( y != 0 ) { height[i] = log( y + LOG_OFFSET ) * 30; if( height[i] > 380 ) height[i] = 380; } else height[ i ] = 0; /* Draw the bar now */ if( height[i] > peaks[i] ) { peaks[i] = height[i]; } else if( peaks[i] > 0 ) { peaks[i] -= PEAK_SPEED; if( peaks[i] < height[i] ) { peaks[i] = height[i]; } if( peaks[i] < 0 ) { peaks[i] = 0; } } /* Decrease the bars if needed */ if( height[i] <= prev_heights[i] - BAR_DECREASE_SPEED ) { height[i] = prev_heights[i]; height[i] -= BAR_DECREASE_SPEED; } prev_heights[i] = height[i]; if( peaks[i] > 0 && i_peak ) { if( peaks[i] >= p_effect->i_height ) peaks[i] = p_effect->i_height - 2; i_line = peaks[i]; for( j = 0; j < i_band_width - 1; j++ ) { for( k = 0; k < 3; k ++ ) { /* Draw the peak */ *(p_picture->p[0].p_pixels + ( p_effect->i_height - i_line -1 -k ) * p_picture->p[0].i_pitch + ( i_start + i_band_width*i + j ) ) = 0xff; *(p_picture->p[1].p_pixels + ( ( p_effect->i_height - i_line ) / 2 - 1 -k/2 ) * p_picture->p[1].i_pitch + ( ( i_start + i_band_width * i + j ) /2 ) ) = 0x00; if( i_line + k - 0x0f > 0 ) { if ( i_line + k - 0x0f < 0xff ) *(p_picture->p[2].p_pixels + ( ( p_effect->i_height - i_line ) / 2 - 1 -k/2 ) * p_picture->p[2].i_pitch + ( ( i_start + i_band_width * i + j ) /2 ) ) = ( i_line + k ) - 0x0f; else *(p_picture->p[2].p_pixels + ( ( p_effect->i_height - i_line ) / 2 - 1 -k/2 ) * p_picture->p[2].i_pitch + ( ( i_start + i_band_width * i + j ) /2 ) ) = 0xff; } else { *(p_picture->p[2].p_pixels + ( ( p_effect->i_height - i_line ) / 2 - 1 -k/2 ) * p_picture->p[2].i_pitch + ( ( i_start + i_band_width * i + j ) /2 ) ) = 0x10 ; } } } } if(height[i] > p_effect->i_height) height[i] = floor(p_effect->i_height ); for( i_line = 0; i_line < height[i]; i_line++ ) { for( j = 0 ; j < i_band_width - 1; j++) { *(p_picture->p[0].p_pixels + (p_effect->i_height - i_line - 1) * p_picture->p[0].i_pitch + ( i_start + i_band_width*i + j ) ) = 0xff; *(p_picture->p[1].p_pixels + ( ( p_effect->i_height - i_line ) / 2 - 1) * p_picture->p[1].i_pitch + ( ( i_start + i_band_width * i + j ) /2 ) ) = 0x00; if( i_line - 0x0f > 0 ) { if( i_line - 0x0f < 0xff ) *(p_picture->p[2].p_pixels + ( ( p_effect->i_height - i_line ) / 2 - 1) * p_picture->p[2].i_pitch + ( ( i_start + i_band_width * i + j ) /2 ) ) = i_line - 0x0f; else *(p_picture->p[2].p_pixels + ( ( p_effect->i_height - i_line ) / 2 - 1) * p_picture->p[2].i_pitch + ( ( i_start + i_band_width * i + j ) /2 ) ) = 0xff; } else { *(p_picture->p[2].p_pixels + ( ( p_effect->i_height - i_line ) / 2 - 1) * p_picture->p[2].i_pitch + ( ( i_start + i_band_width * i + j ) /2 ) ) = 0x10; } } } } window_close( &wind_ctx ); fft_close( p_state ); free( height ); return 0; } static void spectrum_Free( void *data ) { spectrum_data *p_data = data; if( p_data != NULL ) { free( p_data->peaks ); free( p_data->prev_heights ); free( p_data->p_prev_s16_buff ); free( p_data ); } } /***************************************************************************** * spectrometer_Run: derivative spectrum analysis *****************************************************************************/ typedef struct { int *peaks; unsigned i_prev_nb_samples; int16_t *p_prev_s16_buff; window_param wind_param; } spectrometer_data; static int spectrometer_Run(visual_effect_t * p_effect, vlc_object_t *p_aout, const block_t * p_buffer , picture_t * p_picture) { #define Y(R,G,B) ((uint8_t)( (R * .299) + (G * .587) + (B * .114) )) #define U(R,G,B) ((uint8_t)( (R * -.169) + (G * -.332) + (B * .500) + 128 )) #define V(R,G,B) ((uint8_t)( (R * .500) + (G * -.419) + (B * -.0813) + 128 )) float p_output[FFT_BUFFER_SIZE]; /* Raw FFT Result */ int *height; /* Bar heights */ int *peaks; /* Peaks */ int i_80_bands; /* number of bands : 80 if true else 20 */ int i_nb_bands; /* number of bands : 80 or 20 */ int i_band_width; /* width of bands */ int i_separ; /* Should we let blanks ? */ int i_amp; /* Vertical amplification */ int i_peak; /* Should we draw peaks ? */ int i_original; /* original spectrum graphic routine */ int i_rad; /* radius of circle of base of bands */ int i_sections; /* sections of spectranalysis */ int i_extra_width; /* extra width on peak */ int i_peak_height; /* height of peak */ int c; /* sentinel container of total spectral sections */ double band_sep_angle; /* angled separation between beginning of each band */ double section_sep_angle;/* " " ' " ' " " spectrum section */ int max_band_length; /* try not to go out of screen */ int i_show_base; /* Should we draw base of circle ? */ int i_show_bands; /* Should we draw bands ? */ //int i_invert_bands; /* do the bands point inward ? */ double a; /* for various misc angle situations in radians */ int x,y,xx,yy; /* various misc x/y */ char color1; /* V slide on a YUV color cube */ //char color2; /* U slide.. ? color2 fade color ? */ /* Horizontal scale for 20-band equalizer */ const int xscale1[]={0,1,2,3,4,5,6,7,8,11,15,20,27, 36,47,62,82,107,141,184,255}; /* Horizontal scale for 80-band equalizer */ const int xscale2[] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18, 19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34, 35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51, 52,53,54,55,56,57,58,59,61,63,67,72,77,82,87,93,99,105, 110,115,121,130,141,152,163,174,185,200,255}; const int *xscale; const double y_scale = 3.60673760222; /* (log 256) */ fft_state *p_state; /* internal FFT data */ DEFINE_WIND_CONTEXT( wind_ctx ); /* internal window data */ int i , j , k; int i_line = 0; uint16_t p_dest[FFT_BUFFER_SIZE]; /* Adapted FFT result */ int16_t p_buffer1[FFT_BUFFER_SIZE]; /* Buffer on which we perform the FFT (first channel) */ float *p_buffl = /* Original buffer */ (float*)p_buffer->p_buffer; int16_t *p_buffs; /* int16_t converted buffer */ int16_t *p_s16_buff; /* int16_t converted buffer */ if (!p_buffer->i_nb_samples) { msg_Err(p_aout, "no samples yet"); return -1; } /* Create the data struct if needed */ spectrometer_data *p_data = p_effect->p_data; if( !p_data ) { p_data = malloc( sizeof(spectrometer_data) ); if( !p_data ) return -1; p_data->peaks = calloc( 80, sizeof(int) ); if( !p_data->peaks ) { free( p_data ); return -1; } p_data->i_prev_nb_samples = 0; p_data->p_prev_s16_buff = NULL; window_get_param( p_aout, &p_data->wind_param ); p_effect->p_data = (void*)p_data; } peaks = p_data->peaks; /* Allocate the buffer only if the number of samples change */ if( p_buffer->i_nb_samples != p_data->i_prev_nb_samples ) { free( p_data->p_prev_s16_buff ); p_data->p_prev_s16_buff = vlc_alloc( p_buffer->i_nb_samples * p_effect->i_nb_chans, sizeof(int16_t)); p_data->i_prev_nb_samples = p_buffer->i_nb_samples; if( !p_data->p_prev_s16_buff ) return -1; } p_buffs = p_s16_buff = p_data->p_prev_s16_buff; i_original = var_InheritInteger( p_aout, "spect-show-original" ); i_80_bands = var_InheritInteger( p_aout, "spect-80-bands" ); i_separ = var_InheritInteger( p_aout, "spect-separ" ); i_amp = var_InheritInteger( p_aout, "spect-amp" ); i_peak = var_InheritInteger( p_aout, "spect-show-peaks" ); i_show_base = var_InheritInteger( p_aout, "spect-show-base" ); i_show_bands = var_InheritInteger( p_aout, "spect-show-bands" ); i_rad = var_InheritInteger( p_aout, "spect-radius" ); i_sections = var_InheritInteger( p_aout, "spect-sections" ); i_extra_width = var_InheritInteger( p_aout, "spect-peak-width" ); i_peak_height = var_InheritInteger( p_aout, "spect-peak-height" ); color1 = var_InheritInteger( p_aout, "spect-color" ); if( i_80_bands != 0) { xscale = xscale2; i_nb_bands = 80; } else { xscale = xscale1; i_nb_bands = 20; } height = vlc_alloc( i_nb_bands, sizeof(int) ); if( !height) return -1; /* Convert the buffer to int16_t */ /* Pasted from float32tos16.c */ for (i = p_buffer->i_nb_samples * p_effect->i_nb_chans; i--; ) { union { float f; int32_t i; } u; u.f = *p_buffl + 384.0; if(u.i > 0x43c07fff ) * p_buffs = 32767; else if ( u.i < 0x43bf8000 ) *p_buffs = -32768; else *p_buffs = u.i - 0x43c00000; p_buffl++ ; p_buffs++ ; } p_state = visual_fft_init(); if( !p_state) { msg_Err(p_aout,"unable to initialize FFT transform"); free( height ); return -1; } if( !window_init( FFT_BUFFER_SIZE, &p_data->wind_param, &wind_ctx ) ) { fft_close( p_state ); free( height ); msg_Err(p_aout,"unable to initialize FFT window"); return -1; } p_buffs = p_s16_buff; for ( i = 0 ; i < FFT_BUFFER_SIZE; i++) { p_output[i] = 0; p_buffer1[i] = *p_buffs; p_buffs += p_effect->i_nb_chans; if( p_buffs >= &p_s16_buff[p_buffer->i_nb_samples * p_effect->i_nb_chans] ) p_buffs = p_s16_buff; } window_scale_in_place( p_buffer1, &wind_ctx ); fft_perform( p_buffer1, p_output, p_state); for(i = 0; i < FFT_BUFFER_SIZE; i++) { int sqrti = sqrt(p_output[i]); p_dest[i] = sqrti >> 8; } i_nb_bands *= i_sections; for ( i = 0 ; i< i_nb_bands/i_sections ;i++) { /* We search the maximum on one scale */ for( j = xscale[i] , y=0 ; j< xscale[ i + 1 ] ; j++ ) { if ( p_dest[j] > y ) y = p_dest[j]; } /* Calculate the height of the bar */ y >>=7;/* remove some noise */ if( y != 0) { int logy = log(y); height[i] = logy * y_scale; if(height[i] > 150) height[i] = 150; } else { height[i] = 0 ; } /* Draw the bar now */ i_band_width = floor( p_effect->i_width / (i_nb_bands/i_sections)) ; if( i_amp * height[i] > peaks[i]) { peaks[i] = i_amp * height[i]; } else if (peaks[i] > 0 ) { peaks[i] -= PEAK_SPEED; if( peaks[i] < i_amp * height[i] ) { peaks[i] = i_amp * height[i]; } if( peaks[i] < 0 ) { peaks[i] = 0; } } if( i_original != 0 ) { if( peaks[i] > 0 && i_peak ) { if( peaks[i] >= p_effect->i_height ) peaks[i] = p_effect->i_height - 2; i_line = peaks[i]; for( j = 0 ; j< i_band_width - i_separ; j++) { for( k = 0 ; k< 3 ; k ++) { //* Draw the peak *(p_picture->p[0].p_pixels + (p_effect->i_height - i_line -1 -k ) * p_picture->p[0].i_pitch + (i_band_width*i +j) ) = 0xff; *(p_picture->p[1].p_pixels + ( ( p_effect->i_height - i_line ) / 2 -1 -k/2 ) * p_picture->p[1].i_pitch + ( ( 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_effect->i_height - 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_effect->i_height - 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_effect->i_height - 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_effect->i_height - i_line -1) * p_picture->p[0].i_pitch + (i_band_width*i +j) ) = 0xff; *(p_picture->p[1].p_pixels + ( ( p_effect->i_height - 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_effect->i_height - 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_effect->i_height - 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_effect->i_height - i_line ) / 2 - 1) * p_picture->p[2].i_pitch + ( ( i_band_width * i + j ) /2 ) ) = 0x10 ; } } } } } band_sep_angle = 360.0 / i_nb_bands; section_sep_angle = 360.0 / i_sections; if( i_peak_height < 1 ) i_peak_height = 1; max_band_length = p_effect->i_height / 2 - ( i_rad + i_peak_height + 1 ); i_band_width = floor( 360 / i_nb_bands - i_separ ); if( i_band_width < 1 ) i_band_width = 1; for( c = 0 ; c < i_sections ; c++ ) for( i = 0 ; i < (i_nb_bands / i_sections) ; i++ ) { /* DO A PEAK */ if( peaks[i] > 0 && i_peak ) { if( peaks[i] >= p_effect->i_height ) peaks[i] = p_effect->i_height - 2; i_line = peaks[i]; /* circular line pattern(so color blend is more visible) */ for( j = 0 ; j < i_peak_height ; j++ ) { //x = p_picture->p[0].i_pitch / 2; x = p_effect->i_width / 2; y = p_effect->i_height / 2; xx = x; yy = y; for( k = 0 ; k < (i_band_width + i_extra_width) ; k++ ) { x = xx; y = yy; a = ( (i+1) * band_sep_angle + section_sep_angle * (c+1) + k ) * 3.141592 / 180.0; x += (double)( cos(a) * (double)( i_line + j + i_rad ) ); y += (double)( -sin(a) * (double)( i_line + j + i_rad ) ); *(p_picture->p[0].p_pixels + x + y * p_picture->p[0].i_pitch ) = 255;/* Y(R,G,B); */ x /= 2; y /= 2; *(p_picture->p[1].p_pixels + x + y * p_picture->p[1].i_pitch ) = 0;/* U(R,G,B); */ if( 0x04 * (i_line + k ) - 0x0f > 0 ) { if ( 0x04 * (i_line + k ) -0x0f < 0xff) *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch ) = ( 0x04 * ( i_line + k ) ) -(color1-1);/* -V(R,G,B); */ else *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch ) = 255;/* V(R,G,B); */ } else { *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch ) = color1;/* V(R,G,B); */ } } } } if( (height[i] * i_amp) > p_effect->i_height ) height[i] = floor( p_effect->i_height / i_amp ); /* DO BASE OF BAND (mostly makes a circle) */ if( i_show_base != 0 ) { //x = p_picture->p[0].i_pitch / 2; x = p_effect->i_width / 2; y = p_effect->i_height / 2; a = ( (i+1) * band_sep_angle + section_sep_angle * (c+1) ) * 3.141592 / 180.0; x += (double)( cos(a) * (double)i_rad );/* newb-forceful casting */ y += (double)( -sin(a) * (double)i_rad ); *(p_picture->p[0].p_pixels + x + y * p_picture->p[0].i_pitch ) = 255;/* Y(R,G,B); */ x /= 2; y /= 2; *(p_picture->p[1].p_pixels + x + y * p_picture->p[1].i_pitch ) = 0;/* U(R,G,B); */ if( 0x04 * i_line - 0x0f > 0 ) { if( 0x04 * i_line -0x0f < 0xff) *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch ) = ( 0x04 * i_line) -(color1-1);/* -V(R,G,B); */ else *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch ) = 255;/* V(R,G,B); */ } else { *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch ) = color1;/* V(R,G,B); */ } } /* DO A BAND */ if( i_show_bands != 0 ) for( j = 0 ; j < i_band_width ; j++ ) { x = p_effect->i_width / 2; y = p_effect->i_height / 2; xx = x; yy = y; a = ( (i+1) * band_sep_angle + section_sep_angle * (c+1) + j ) * 3.141592/180.0; for( k = (i_rad+1) ; k < max_band_length ; k++ ) { if( (k-i_rad) > height[i] ) break;/* uhh.. */ x = xx; y = yy; x += (double)( cos(a) * (double)k );/* newbed! */ y += (double)( -sin(a) * (double)k ); *(p_picture->p[0].p_pixels + x + y * p_picture->p[0].i_pitch ) = 255; x /= 2; y /= 2; *(p_picture->p[1].p_pixels + x + y * p_picture->p[1].i_pitch ) = 0; if( 0x04 * i_line - 0x0f > 0 ) { if ( 0x04 * i_line -0x0f < 0xff) *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch ) = ( 0x04 * i_line) -(color1-1); else *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch ) = 255; } else { *(p_picture->p[2].p_pixels + x + y * p_picture->p[2].i_pitch ) = color1; } } } } window_close( &wind_ctx ); fft_close( p_state ); free( height ); return 0; } static void spectrometer_Free( void *data ) { spectrometer_data *p_data = data; if( p_data != NULL ) { free( p_data->peaks ); free( p_data->p_prev_s16_buff ); free( p_data ); } } /***************************************************************************** * scope_Run: scope effect *****************************************************************************/ static int scope_Run(visual_effect_t * p_effect, vlc_object_t *p_aout, const block_t * p_buffer , picture_t * p_picture) { VLC_UNUSED(p_aout); int i_index; float *p_sample ; uint8_t *ppp_area[2][3]; for( i_index = 0 ; i_index < 2 ; i_index++ ) { for( int j = 0 ; j < 3 ; j++ ) { ppp_area[i_index][j] = p_picture->p[j].p_pixels + (i_index * 2 + 1) * p_picture->p[j].i_lines / 4 * p_picture->p[j].i_pitch; } } for( i_index = 0, p_sample = (float *)p_buffer->p_buffer; i_index < __MIN( p_effect->i_width, (int)p_buffer->i_nb_samples ); i_index++ ) { int8_t i_value; /* Left channel */ i_value = p_sample[p_effect->i_idx_left] * 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[p_effect->i_idx_right] * 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; p_sample += p_effect->i_nb_chans; } return 0; } /***************************************************************************** * vuMeter_Run: vu meter effect *****************************************************************************/ static int vuMeter_Run(visual_effect_t * p_effect, vlc_object_t *p_aout, const block_t * p_buffer , picture_t * p_picture) { VLC_UNUSED(p_aout); float i_value_l = 0; float i_value_r = 0; /* Compute the peak values */ for ( unsigned i = 0 ; i < p_buffer->i_nb_samples; i++ ) { const float *p_sample = (float *)p_buffer->p_buffer; float ch; ch = p_sample[p_effect->i_idx_left] * 256; if (ch > i_value_l) i_value_l = ch; ch = p_sample[p_effect->i_idx_right] * 256; if (ch > i_value_r) i_value_r = ch; p_sample += p_effect->i_nb_chans; } i_value_l = fabsf(i_value_l); i_value_r = fabsf(i_value_r); /* Stay under maximum value admitted */ if ( i_value_l > 200 * M_PI_2 ) i_value_l = 200 * M_PI_2; if ( i_value_r > 200 * M_PI_2 ) i_value_r = 200 * M_PI_2; float *i_value; if( !p_effect->p_data ) { /* Allocate memory to save hand positions */ p_effect->p_data = vlc_alloc( 2, sizeof(float) ); i_value = p_effect->p_data; i_value[0] = i_value_l; i_value[1] = i_value_r; } else { /* Make the hands go down slowly if the current values are slower than the previous */ i_value = p_effect->p_data; if ( i_value_l > i_value[0] - 6 ) i_value[0] = i_value_l; else i_value[0] = i_value[0] - 6; if ( i_value_r > i_value[1] - 6 ) i_value[1] = i_value_r; else i_value[1] = i_value[1] - 6; } int x, y; float teta; float teta_grad; int start_x = p_effect->i_width / 2 - 120; /* i_width.min = 532 (visual.c) */ for ( int j = 0; j < 2; j++ ) { /* Draw the two scales */ int k = 0; teta_grad = GRAD_ANGLE_MIN; for ( teta = -M_PI_4; teta <= M_PI_4; teta = teta + 0.003 ) { for ( unsigned i = 140; i <= 150; i++ ) { y = i * cos(teta) + 20; x = i * sin(teta) + start_x + 240 * j; /* Compute the last color for the gradation */ if (teta >= teta_grad + GRAD_INCR && teta_grad <= GRAD_ANGLE_MAX) { teta_grad = teta_grad + GRAD_INCR; k = k + 5; } *(p_picture->p[0].p_pixels + (p_picture->p[0].i_lines - y - 1 ) * p_picture->p[0].i_pitch + x ) = 0x45; *(p_picture->p[1].p_pixels + (p_picture->p[1].i_lines - y / 2 - 1 ) * p_picture->p[1].i_pitch + x / 2 ) = 0x0; *(p_picture->p[2].p_pixels + (p_picture->p[2].i_lines - y / 2 - 1 ) * p_picture->p[2].i_pitch + x / 2 ) = 0x4D + k; } } /* Draw the two hands */ teta = (float)i_value[j] / 200 - M_PI_4; for ( int i = 0; i <= 150; i++ ) { y = i * cos(teta) + 20; x = i * sin(teta) + start_x + 240 * j; *(p_picture->p[0].p_pixels + (p_picture->p[0].i_lines - y - 1 ) * p_picture->p[0].i_pitch + x ) = 0xAD; *(p_picture->p[1].p_pixels + (p_picture->p[1].i_lines - y / 2 - 1 ) * p_picture->p[1].i_pitch + x / 2 ) = 0xFC; *(p_picture->p[2].p_pixels + (p_picture->p[2].i_lines - y / 2 - 1 ) * p_picture->p[2].i_pitch + x / 2 ) = 0xAC; } /* Draw the hand bases */ for ( teta = -M_PI_2; teta <= M_PI_2 + 0.01; teta = teta + 0.003 ) { for ( int i = 0; i < 10; i++ ) { y = i * cos(teta) + 20; x = i * sin(teta) + start_x + 240 * j; *(p_picture->p[0].p_pixels + (p_picture->p[0].i_lines - y - 1 ) * p_picture->p[0].i_pitch + x ) = 0xFF; *(p_picture->p[1].p_pixels + (p_picture->p[1].i_lines - y / 2 - 1 ) * p_picture->p[1].i_pitch + x / 2 ) = 0x80; *(p_picture->p[2].p_pixels + (p_picture->p[2].i_lines - y / 2 - 1 ) * p_picture->p[2].i_pitch + x / 2 ) = 0x80; } } } return 0; } /* Table of effects */ const struct visual_cb_t effectv[] = { { "scope", scope_Run, dummy_Free }, { "vuMeter", vuMeter_Run, dummy_Free }, { "spectrum", spectrum_Run, spectrum_Free }, { "spectrometer", spectrometer_Run, spectrometer_Free }, { "dummy", dummy_Run, dummy_Free }, }; const unsigned effectc = sizeof (effectv) / sizeof (effectv[0]);