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drawing.c
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drawing.c
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/*****************************************************************************
* Gnome Wave Cleaner Version 0.19
* Copyright (C) 2001 Jeffrey J. Welty
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*******************************************************************************/
/* drawing.c */
#include <stdlib.h>
#include <gdk/gdk.h>
/* #include <gdk-pixbuf/gnome-canvas-pixbuf.h> */
#include "gwc.h"
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#define THICKNESS 3
#define point_color "red"
#define handle_color "green"
#define point_handle_width 6
#define HANDLE_THICKNESS 1
extern int sonogram_log ;
extern GdkPixmap *audio_pixmap ;
extern GdkPixmap *highlight_pixmap ;
extern GdkPixmap *cursor_pixmap ;
int last_cursor_x = -1;
extern GtkWidget *audio_drawing_area ;
extern long markers[] ;
extern long n_markers ;
extern long num_song_markers, song_markers[] ;
GdkColor red_gdk_color = {0, 65535, 0, 0} ;
GdkColor green_gdk_color = {0, 0, 65535, 0} ;
GdkColor blue_gdk_color = {1, 0, 0, 65535} ;
GdkColor yellow_gdk_color = {2, 65535, 65535, 0} ;
GdkColor grey_gdk_color = {3, 43000, 43000, 43000} ;
GdkColor white_gdk_color = {4, 65535, 65535, 65535} ;
GdkColor black_gdk_color = {5, 0, 0, 0} ;
GdkColor orange_gdk_color = {6, 65535, 42240, 0} ;
GdkColor sonogram_color[256] ;
GdkColor *red_color = &red_gdk_color ;
GdkColor *green_color = &green_gdk_color ;
GdkColor *blue_color = &blue_gdk_color ;
GdkColor *yellow_color = &yellow_gdk_color ;
GdkColor *orange_color = &orange_gdk_color ;
GdkColor *white_color = &white_gdk_color ;
GdkColor *grey_color = &grey_gdk_color ;
GdkColor *black_color = &black_gdk_color ;
/*
#define highlight_color white_color
*/
GdkColor *highlight_color = &white_gdk_color;
#define cut_highlight_color red_color
/* a utility function to draw a rect */
static void
draw_a_rect(GdkGC *gc,
gint x1, gint y1, gint x2, gint y2, GdkColor *color)
{
gdk_gc_set_foreground(gc, color) ;
gdk_draw_rectangle(audio_pixmap, gc, TRUE, x1,y1,x2-x1+1,y2-y1+1) ;
}
/* a utility function to draw a rect */
static void
draw_a_highlight_rect(GdkGC *gc,
gint x1, gint y1, gint x2, gint y2, GdkColor *color)
{
/* gdk doesn't seems to clip before passing to X which only uses
shorts for coordinates so at high zoom wrong regions would be
highlighted */
if (x1 > SHRT_MAX)
x1 = SHRT_MAX;
if (y1 > SHRT_MAX)
y1 = SHRT_MAX;
if (x1 < SHRT_MIN)
x1 = SHRT_MIN;
if (y1 < SHRT_MIN)
y1 = SHRT_MIN;
if (x2 > SHRT_MAX)
x2 = SHRT_MAX;
if (y2 > SHRT_MAX)
y2 = SHRT_MAX;
if (x2 < SHRT_MIN)
x2 = SHRT_MIN;
if (y2 < SHRT_MIN)
y2 = SHRT_MIN;
gdk_gc_set_foreground(gc, color) ;
gdk_gc_set_function(gc, GDK_XOR) ;
gdk_draw_rectangle(highlight_pixmap, gc, TRUE, x1,y1,x2-x1+1,y2-y1+1) ;
gdk_gc_set_function(gc, GDK_COPY) ;
}
/* a utility function to draw a line */
static void
draw_a_line(GdkGC *gc,
gint x1, gint y1, gint x2, gint y2, GdkColor *color, int end_shapes)
{
gdk_gc_set_foreground(gc, color) ;
gdk_draw_line(audio_pixmap, gc, x1,y1,x2,y2) ;
if (x1 > SHRT_MIN && x1 < SHRT_MAX) {
gdk_draw_line(audio_pixmap, gc, x1,y1,x2,y2) ;
if(end_shapes & GWC_POINT_HANDLE) {
draw_a_rect(gc,
(x1-point_handle_width/2),
(y1-point_handle_width/2),
(x1+point_handle_width/2),
(y1+point_handle_width/2), white_color) ;
}
}
}
/* a utility function to draw a line */
static void
draw_a_cursor_line(GdkGC *gc,
gint x1, gint y1, gint x2, gint y2, GdkColor *color, int end_shapes)
{
gdk_gc_set_foreground(gc, color) ;
if (x1 > SHRT_MIN && x1 < SHRT_MAX)
gdk_draw_line(highlight_pixmap, gc, x1,y1,x2,y2) ;
}
int first_pick_x, last_pick_x ;
int selecting_region = FALSE ;
int region_select_min_x = -1 ;
int region_select_max_x = -1 ;
long pixel_to_sample(struct view *v, int pixel)
{
double p = (double)pixel / v->canvas_width ;
double w = (v->last_sample - v->first_sample) ;
long s = p*w + v->first_sample ;
return s ;
}
int sample_to_pixel(struct view *v, long sample)
{
double p = (double)(sample-v->first_sample) / (double)(v->last_sample - v->first_sample) ;
double w = (v->canvas_width) ;
int pix = p*w ;
return pix ;
}
#define MAX_BUF 10000
/* in macro AtoS, a is audio level, max_a is maximum possible audio level, channel is 0 for left, 1 for right
ch is canvas_height */
extern double view_scale ;
extern struct click_data click_data ;
struct click_data *clicks = &click_data ;
#if 0
#define AtoS(a,max_a,channel,ch) (long)(a*1000*view_scale)*(long)((ch-16)/4)/((max_a)*1000) + (long)((ch-16)/4) + (long)(channel)*ch/2+8
#endif
/* Put 8 spaces in middle for separator bar and prevent one channel from
running over into the other */
#define AtoS(a,max_a,channel,ch) (MAX(0,MIN(ch/2-5,lrint(((a)*view_scale/(max_a)+1.0)*(ch-9)/4.0))) + channel*(ch/2+4))
GdkPixmap *wave_image = NULL ;
void draw_compressed_audio_image(struct view *v, struct sound_prefs *p, GtkWidget *da)
{
double samples_per_pixel = (double)(v->last_sample - v->first_sample + 1) / (double)v->canvas_width ;
double blocks_per_pixel = samples_per_pixel / (double)SBW ;
int draw_flag = 0 ;
long pixel ;
int x1=0, x2=0, ly1=0, ly2=0, ry1=0, ry2=0 ;
if(p->sample_buffer_exists == FALSE)
fill_sample_buffer(p) ;
/* g_print("samples per pixel = %lg\n", samples_per_pixel) ; */
if(v->selection_region == FALSE) {
region_select_min_x = -1 ;
region_select_max_x = -1 ;
}
p->max_value = 0.0 ;
for(pixel = 0 ; pixel < v->canvas_width ; pixel++) {
long first = v->first_sample + lrint(pixel*samples_per_pixel) ;
long last = first + lrint(samples_per_pixel) ;
double avg_left = 0, avg_right = 0 ;
struct sample_display_block sb ;
if(first < 0) first = 0 ;
if(first > v->last_sample) first = v->last_sample ;
if(last < 0) last = 0 ;
if(last > v->last_sample) last = v->last_sample ;
/* d_print("data for pixel:%ld, first=%ld, last=%ld ", pixel, first, last) ; */
get_sample_stats(&sb, first, last, blocks_per_pixel) ;
if(sb.max_value[0] > p->max_value) p->max_value = sb.max_value[0] ;
if(sb.max_value[1] > p->max_value) p->max_value = sb.max_value[1] ;
if(1 || samples_per_pixel > 50) {
#if 0
avg_left = sb.rms[0] ;
avg_right = sb.rms[1] ;
avg_left = avg_left/2 + sb.max_value[0]/2 ;
avg_right = avg_right/2 + sb.max_value[1]/2 ;
#endif
avg_left = sb.max_value[0] ;
avg_right = sb.max_value[1] ;
} else {
avg_left = sb.rms[0] ;
avg_right = sb.rms[1] ;
}
ly1 = AtoS(avg_left,1.0,0,v->canvas_height) ;
ry1 = AtoS(avg_right,1.0,1,v->canvas_height) ;
if(1 || samples_per_pixel > 50) {
ly2 = AtoS(-avg_left,1.0,0,v->canvas_height) ;
ry2 = AtoS(-avg_right,1.0,1,v->canvas_height) ;
}
if(1 || samples_per_pixel > 50) {
x1 = pixel ;
x2 = pixel ;
draw_a_line(da->style->black_gc, x1, ly1, x2, ly2, black_color, draw_flag) ;
draw_a_line(da->style->black_gc, x1, ry1, x2, ry2, black_color, draw_flag) ;
} else if(pixel > 0) {
x1 = pixel ;
x2 = pixel - 1 ;
draw_a_line(da->style->black_gc, x1, ly1, x2, ly2, black_color, draw_flag) ;
draw_a_line(da->style->black_gc, x1, ry1, x2, ry2, black_color, draw_flag) ;
}
ly2 = ly1 ;
ry2 = ry1 ;
}
}
extern struct view audio_view ;
int _audio_area_button_event(GtkWidget *c, GdkEventButton *event)
{
/* we ignore all events except for BUTTON_PRESS */
if(event->type == GDK_BUTTON_PRESS) {
first_pick_x = last_pick_x = (int)event->x ;
selecting_region = TRUE ;
d_print("press mx:%d my:%d\n", (int)event->x, (int)event->y) ;
if((int)event->y < audio_view.canvas_height/4)
audio_view.channel_selection_mask = 0x01 ;
else if((int)event->y > 3*audio_view.canvas_height/4)
audio_view.channel_selection_mask = 0x02 ;
else
audio_view.channel_selection_mask = 0x03 ;
audio_view.selection_region = FALSE ;
main_redraw(FALSE, FALSE) ;
display_times() ;
return TRUE;
}
if(event->type == GDK_BUTTON_RELEASE) {
region_select_min_x = MIN(first_pick_x, last_pick_x) ;
region_select_max_x = MAX(first_pick_x, last_pick_x) ;
region_select_min_x = MAX(region_select_min_x, 0) ;
region_select_max_x = MIN(region_select_max_x, audio_view.canvas_width-1) ;
if(region_select_max_x - region_select_min_x > 0) {
audio_view.selected_first_sample = pixel_to_sample(&audio_view, region_select_min_x) ;
audio_view.selected_last_sample = pixel_to_sample(&audio_view, region_select_max_x) ;
audio_view.selection_region = TRUE ;
} else {
audio_view.selection_region = FALSE ;
}
selecting_region = FALSE ;
display_times() ;
main_redraw(FALSE, FALSE) ;
return TRUE;
}
if(event->type == GDK_2BUTTON_PRESS) {
long click_sample = pixel_to_sample(&audio_view, (int)event->x) ;
long select_first = audio_view.first_sample ;
long select_last = audio_view.last_sample ;
int i ;
for(i = 0 ; i < num_song_markers ; i++) {
if(song_markers[i] < 0) continue ;
if(song_markers[i] > click_sample && song_markers[i] < select_last)
select_last = song_markers[i] ;
if(song_markers[i] < click_sample && song_markers[i] > select_first)
select_first = song_markers[i] ;
}
audio_view.selected_first_sample = select_first ;
audio_view.selected_last_sample = select_last ;
audio_view.selection_region = TRUE ;
selecting_region = FALSE ;
display_times() ;
main_redraw(FALSE, FALSE) ;
return TRUE;
}
if(event->type == GDK_3BUTTON_PRESS) {
audio_view.selected_first_sample = audio_view.first_sample ;
audio_view.selected_last_sample = audio_view.last_sample ;
audio_view.selection_region = TRUE ;
selecting_region = FALSE ;
display_times() ;
main_redraw(FALSE, FALSE) ;
return TRUE;
}
return FALSE ;
}
int _audio_area_motion_event(GtkWidget *c, GdkEventMotion *event)
{
int x, y ;
GdkModifierType state ;
if(event->is_hint ) {
gdk_window_get_pointer(event->window, &x, &y, &state) ;
} else {
x = event->x ;
y = event->y ;
state = event->state ;
}
/* d_print("motion mx:%d my:%d\n", x, y) ; */
if(state & GDK_BUTTON1_MASK) {
if(selecting_region == TRUE) {
long marker_pix ;
int i ;
int min_marker_dist_to_first = 10 ;
int min_marker_dist_to_last = 10 ;
last_pick_x = x ;
region_select_min_x = MIN(first_pick_x, last_pick_x) ;
region_select_max_x = MAX(first_pick_x, last_pick_x) ;
region_select_min_x = MAX(region_select_min_x, 0) ;
region_select_max_x = MIN(region_select_max_x, audio_view.canvas_width-1) ;
audio_view.selected_first_sample = pixel_to_sample(&audio_view, region_select_min_x) ;
audio_view.selected_last_sample = pixel_to_sample(&audio_view, region_select_max_x+1) - 1 ;
if(audio_view.selected_last_sample > audio_view.n_samples-1) audio_view.selected_last_sample = audio_view.n_samples-1 ;
for(i = 0 ; i < n_markers ; i++) {
if(markers[i] < 0) continue ;
marker_pix = sample_to_pixel(&audio_view, markers[i]) ;
if( ABS(region_select_min_x-marker_pix) < min_marker_dist_to_first) {
min_marker_dist_to_first = ABS(region_select_min_x-marker_pix) ;
//region_select_min_x = marker_pix ;
audio_view.selected_first_sample = markers[i] ;
}
if( ABS(region_select_max_x-marker_pix) < min_marker_dist_to_last) {
min_marker_dist_to_last = ABS(region_select_max_x-marker_pix) ;
//region_select_max_x = marker_pix ;
audio_view.selected_last_sample = markers[i] ;
}
}
for(i = 0 ; i < num_song_markers ; i++) {
if(song_markers[i] < 0) continue ;
marker_pix = sample_to_pixel(&audio_view, song_markers[i]) ;
if( ABS(region_select_min_x-marker_pix) < min_marker_dist_to_first) {
min_marker_dist_to_first = ABS(region_select_min_x-marker_pix) ;
//region_select_min_x = marker_pix ;
audio_view.selected_first_sample = song_markers[i] ;
}
if( ABS(region_select_max_x-marker_pix) < min_marker_dist_to_last) {
min_marker_dist_to_last = ABS(region_select_max_x-marker_pix) ;
//region_select_max_x = marker_pix ;
audio_view.selected_last_sample = song_markers[i] ;
}
}
audio_view.selection_region = TRUE ;
display_times() ;
main_redraw(FALSE, FALSE) ;
return TRUE ;
}
}
/* return true as we have handled it */
return FALSE;
}
int psk_to_color(double pwr, double max_amp, int max_color)
{
double p = 10.0*log10(pwr/(max_amp*max_amp)) ;
/* convert decibels in range 0 to -120 to range 1 to 0 */
p = (p - -80.0) / (80.0) ;
if(p < 0.0) p = 0.0 ;
if(p > 1.0) p = 1.0 ;
return p * max_color ;
}
int jw_psk_to_color(double pwr, double max_amp, int max_color)
{
double p = 10.0*log10(pwr/(max_amp*max_amp)) ;
/* convert decibels in range 0 to -120 to range 1 to 0 */
/* jjw version */
p = (p - -100.0) / (100.0) ;
if(p < 0.0) p = 0.0 ;
if(p > 1.0) p = 1.0 ;
return p * max_color ;
}
#define sqr(x) (x)*(x)
#define FFT_MAX 8192
double spectral_amp = 1.0 ;
/* If COMBINE_MAX is set then we combine multiple frequency bins into each
pixel with a max function else average them */
#define COMBINE_MAX
void draw_sonogram(struct view *v, struct sound_prefs *pPrefs, GtkWidget *da, double samples_per_pixel, int cursor_flag)
{
int FFT_SIZE ;
fftw_real left[FFT_MAX], right[FFT_MAX], out[FFT_MAX], power_spectrum[FFT_MAX/2+1], window[FFT_MAX] ;
double merged_power_spectrum[FFT_MAX];
double merged_power_count[FFT_MAX];
#ifdef HAVE_FFTW3
FFTW(plan) pLeft, pRight ;
#else /* HAVE_FFTW3 */
rfftw_plan p ;
#endif /* HAVE_FFTW3 */
int ly1, ly2, color, k ;
int ly1_tbl[FFT_MAX], ly2_tbl[FFT_MAX] ;
int ly_offset[2];
long min_sample, max_sample ;
long sample ;
int x ;
int m ;
double view_scale_save = view_scale ;
GdkImage *image ;
int y ;
int spec_start, spec_stop;
int channel;
double spectrum_scale;
int index_20Hz;
#define MAXSW 2000
#define MAXSH 400
unsigned char level[2][MAXSW][MAXSH] ;
push_status_text("Building sonogram") ;
update_progress_bar(0.0,PROGRESS_UPDATE_INTERVAL,TRUE) ;
/* only draw the sonogram at a scale of 1.0 */
view_scale = 1.0 ;
/* Is gdk_visual_get_system the correct visual? */
image = gdk_image_new(GDK_IMAGE_FASTEST, gdk_visual_get_system(),
v->canvas_width, v->canvas_height);
if (image == NULL) {
printf("Unable to create image\n");
exit(1);
}
for(y = 0 ; y < v->canvas_height ; y++) {
for(x = 0 ; x < v->canvas_width ; x++) {
gdk_image_put_pixel(image, x, y, black_color->pixel);
}
}
for(FFT_SIZE = 64 ; FFT_SIZE < FFT_MAX ; FFT_SIZE *= 2)
if(FFT_SIZE > samples_per_pixel*2)
break ;
/* g_print("Sonogram FFT_SIZE:%d\n", FFT_SIZE) ; */
m = FFT_SIZE/4 ;
index_20Hz = MAX(1,(20 * FFT_SIZE + pPrefs->rate / 2) / pPrefs->rate);
/* Normalize energy based on number of bins relative to maximum
length FFT */
spectrum_scale = spectral_amp * sqrt((double) FFT_SIZE / FFT_MAX) * 4.0;
#ifdef HAVE_FFTW3
pLeft = FFTW(plan_r2r_1d)(FFT_SIZE, left, out, FFTW_R2HC, FFTW_ESTIMATE);
pRight = FFTW(plan_r2r_1d)(FFT_SIZE, right, out, FFTW_R2HC, FFTW_ESTIMATE);
#else /* HAVE_FFTW3 */
p = rfftw_create_plan(FFT_SIZE, FFTW_REAL_TO_COMPLEX, FFTW_ESTIMATE);
#endif /* HAVE_FFTW3 */
for(k = 0 ; k < FFT_SIZE ; k++) {
window[k] = blackman(k,FFT_SIZE) ;
/* window[k] = pow(window[k],1.0) ; */
}
{
double shift = (log(FFT_SIZE/2-1) + log(index_20Hz))/2;
double scale = shift - log(index_20Hz);
for(k = 1 ; k <= FFT_SIZE/2 ; k++) {
if (sonogram_log) {
ly1_tbl[k] = AtoS(MIN(shift - log(k),scale),scale,0,v->canvas_height) ;
ly2_tbl[k] = AtoS(MIN(shift - log(k+1),scale),scale,0,v->canvas_height) ;
} else {
ly1_tbl[k] = AtoS(-(k-m-1),FFT_SIZE/4.0,0,v->canvas_height) ;
ly2_tbl[k] = AtoS(-(k-m),FFT_SIZE/4.0,0,v->canvas_height) ;
}
}
}
ly1_tbl[0] = 99999999;
ly2_tbl[0] = 99999999;
spec_start = ly2_tbl[FFT_SIZE/2];
spec_stop = ly1_tbl[1]-1;
for(k = spec_start ; k <= spec_stop ; k++) {
merged_power_count[k] = 0;
}
for(k = 1 ; k <= FFT_SIZE/2 ; k++) {
merged_power_count[ly2_tbl[k]]++;
}
ly_offset[0] = 0;
ly_offset[1] = AtoS(-(1-m-1),FFT_SIZE/4.0,1,v->canvas_height) - ly1_tbl[1];
for(x = 0 ; x < v->canvas_width ; x++) {
long mid_sample ;
update_progress_bar((double) x / v->canvas_width,PROGRESS_UPDATE_INTERVAL,FALSE) ;
sample = pixel_to_sample(&audio_view, x) ;
min_sample = sample-FFT_SIZE/2 ;
min_sample = MAX(0, min_sample) ;
max_sample = min_sample+FFT_SIZE-1 ;
if(max_sample > audio_view.n_samples-1)
max_sample = audio_view.n_samples-1 ;
mid_sample = (max_sample-min_sample+1)/2 ;
read_fft_real_wavefile_data(left, right, min_sample, max_sample) ;
for(k = 0 ; k < FFT_SIZE ; k++) {
left[k] *= window[k] ;
right[k] *= window[k] ;
}
for (channel = 0; channel < 2; channel++) {
#ifdef HAVE_FFTW3
if (channel == 0)
FFTW(execute)(pLeft);
else
FFTW(execute)(pRight);
#else /* HAVE_FFTW3 */
if (channel == 0)
rfftw_one(p, left, out);
else
rfftw_one(p, right, out);
#endif /* HAVE_FFTW3 */
power_spectrum[0] = out[0]*out[0]; /* DC component */
for (k = 1; k < (FFT_SIZE+1)/2; ++k) /* (k < FFT_SIZE/2 rounded up) */
/* power_spectrum[k] = out[k]*out[k] ; */
power_spectrum[k] = out[k]*out[k] + out[FFT_SIZE-k]*out[FFT_SIZE-k];
if (FFT_SIZE % 2 == 0) /* N is even */
power_spectrum[FFT_SIZE/2] = (out[FFT_SIZE/2]*out[FFT_SIZE/2]); /* Nyquist freq. */
if (FFT_SIZE/2 >= spec_stop - spec_start + 1 || sonogram_log) {
for(k = spec_start ; k <= spec_stop ; k++) {
#ifdef COMBINE_MAX
merged_power_spectrum[k] = -DBL_MAX;
#else
merged_power_spectrum[k] = 0.0;
#endif
}
for(k = sonogram_log ? index_20Hz : 1 ; k <= FFT_SIZE/2 ; k++) {
#ifdef COMBINE_MAX
if (power_spectrum[k] > merged_power_spectrum[ly1_tbl[k]])
merged_power_spectrum[ly1_tbl[k]] = power_spectrum[k];
#else
merged_power_spectrum[ly1_tbl[k]] += power_spectrum[k];
#endif
}
#ifndef COMBINE_MAX
for(k = spec_start ; k <= spec_stop ; k++) {
merged_power_spectrum[k] /= merged_power_count[k];
}
#endif
for(k = spec_start ; k <= spec_stop ; k++) {
ly1 = ly1_tbl[k];
ly2 = ly2_tbl[k];
for (y = ly2 + 1; y < ly1; y++) {
merged_power_spectrum[y] = merged_power_spectrum[ly1];
}
}
} else {
for(k = 1 ; k <= FFT_SIZE/2 ; k++) {
ly1 = ly1_tbl[k];
ly2 = ly2_tbl[k];
for (y = ly2; y <= ly1; y++) {
merged_power_spectrum[y] = power_spectrum[k];
}
}
}
#define BOTH_DJG_JJW_NOT
#ifdef BOTH_DJG_JJW
for(k = spec_start ; k <= spec_stop ; k++) {
color = psk_to_color(merged_power_spectrum[k], spectrum_scale, 255) ;
if(color > 255) color=255 ;
if(color < 0) color=0 ;
gdk_image_put_pixel(image, x, k + ly_offset[0], sonogram_color[color].pixel);
}
for(k = 1 ; k <= FFT_SIZE/2 ; k++) {
{
int y ;
color = jw_psk_to_color(power_spectrum[k]*spectral_amp, 1.0, 255) ;
if(color > 255) color=255 ;
if(color < 0) color=0 ;
for(y = ly2_tbl[k] ; y < ly1_tbl[k] ; y++) {
gdk_image_put_pixel(image, x, y + ly_offset[1], sonogram_color[color].pixel);
}
}
}
#else
#ifdef DJG
for(k = spec_start ; k <= spec_stop ; k++) {
color = psk_to_color(merged_power_spectrum[k], spectrum_scale, 255) ;
if(color > 255) color=255 ;
if(color < 0) color=0 ;
gdk_image_put_pixel(image, x, k + ly_offset[channel], sonogram_color[color].pixel);
}
#else
for(k = 1 ; k <= FFT_SIZE/2 ; k++) {
int y ;
color = psk_to_color(power_spectrum[k]*spectral_amp, 1.0, 255) ;
if(color < 0) color=0 ;
level[channel][x][k-1] = color ;
if(color > 255) color=255 ;
{
for(y = ly2_tbl[k] ; y < ly1_tbl[k] ; y++) {
gdk_image_put_pixel(image, x, y + ly_offset[channel], sonogram_color[color].pixel);
}
}
}
#endif
#endif
}
}
gdk_draw_image(audio_pixmap, da->style->white_gc, image, 0, 0, 0, 0,
v->canvas_width, v->canvas_height);
gdk_image_destroy(image);
#define DRAW_CLICKS_NOT
#ifdef DRAW_CLICKS
#define CLICK_WINDOW_SIZE 1000
#define CLICK_WINDOW_STEP 800
int iwindow ;
/* this goes BACKWARDS through the data */
for(iwindow = v->last_sample; iwindow >= v->first_sample ; iwindow -= CLICK_WINDOW_STEP) {
int ifirst = iwindow-CLICK_WINDOW_SIZE ;
if(ifirst < 0) ifirst=0 ;
int window_size = iwindow-ifirst ;
fftw_real pdata[2][CLICK_WINDOW_SIZE] ;
fprintf(stderr, "ifirst, iwindow, %d %d\n", ifirst, iwindow) ;
read_fft_real_wavefile_data(pdata[0], pdata[1], ifirst, iwindow) ;
int j ;
for(j = 0 ; j < window_size+1 ; j++) {
int i = iwindow-j ;
for(channel = 0 ; channel < 2 ; channel++) {
double hpf, hpf_ave, hpf_dev;
double hpf2, hpf2_ave, hpf2_dev;
get_hpf(i,pdata[channel],&hpf,&hpf_ave,&hpf_dev,&hpf2,&hpf2_ave,&hpf2_dev);
ly1 = AtoS(hpf,200.0,channel,v->canvas_height) ;
ly2 = AtoS(hpf2,200.0,channel,v->canvas_height) ;
int x = sample_to_pixel(v, i) ;
draw_a_line(da->style->white_gc, x, ly1, x, ly2, green_color, 0) ;
}
}
}
#endif /* DRAW_FFT_CLICKS */
#ifdef DRAW_FFT_CLICKS
for(channel = 0 ; channel < 2 ; channel++) {
double mean_level[MAXSH] ;
double offset[MAXSW] ;
double hgt_sum ;
double mean, std_err, var, cv, stddev ;
long click_start, click_end ;
int in_click ;
for(k = 0 ; k < FFT_SIZE/2 ; k++) {
mean_level[k] = 0.0 ;
for(x = 0 ; x < v->canvas_width ; x++)
mean_level[k] += level[channel][x][k] ;
mean_level[k] /= v->canvas_width ;
}
for(x = 0 ; x < v->canvas_width ; x++) {
offset[x] = 0.0 ;
for(k = 0 ; k < FFT_SIZE/2 ; k++) {
offset[x] += level[channel][x][k] - mean_level[k] ;
}
offset[x] /= (double)FFT_SIZE/2.0 ;
if(offset[x] < 0.0) offset[x] = 0.0 ;
}
stats(offset, v->canvas_width, &mean, &std_err, &var, &cv, &stddev) ;
in_click = 0 ;
for(x = 0 ; x < v->canvas_width-1 ; x++) {
double z = (offset[x]-mean)/stddev ;
double z1 = (offset[x+1]-mean)/stddev ;
if(z < 0.0) z = 0.0 ;
if(z1 < 0.0) z1 = 0.0 ;
ly1 = AtoS(-40.0*z,200.0,channel,v->canvas_height) ;
ly2 = AtoS(-40.0*z1,200.0,channel,v->canvas_height) ;
if(z > 1.e-30) {
if(!in_click) {
in_click = 1 ;
click_start = x ;
hgt_sum = z ;
} else {
hgt_sum += z ;
}
} else {
if(in_click) {
double click_width = ((x-1) - click_start+1) ;
int click_mid = (click_start + click_width/2+0.5) ;
int y1,y2 ;
hgt_sum /= click_width ;
//printf("%d %lg\n", click_mid, hgt_sum) ;
y1 = AtoS(0.0,200.0,channel,v->canvas_height) ;
y2 = AtoS(-40.0*hgt_sum,200.0,channel,v->canvas_height) ;
draw_a_line(da->style->white_gc, click_mid-1, y1, click_mid-1, y2, green_color, 0) ;
draw_a_line(da->style->white_gc, click_mid, y1, click_mid, y2, green_color, 0) ;
draw_a_line(da->style->white_gc, click_mid+1, y1, click_mid+1, y2, green_color, 0) ;
}
in_click = 0 ;
}
draw_a_line(da->style->white_gc, x, ly1, x+1, ly2, green_color, 0) ;
}
}
#endif /* DRAW_FFT_CLICKS */
#ifdef HAVE_FFTW3
FFTW(destroy_plan)(pLeft);
FFTW(destroy_plan)(pRight);
#else /* HAVE_FFTW3 */
rfftw_destroy_plan(p);
#endif /* HAVE_FFTW3 */
update_progress_bar(0.0,PROGRESS_UPDATE_INTERVAL,TRUE) ;
pop_status_text();
#ifdef TEST_DRAW_CLICK_FINDER
in_click = 0 ;
#define N 50
{
double mean_right, stderr_right, var_right, cv_right, stddev_right ;
stats(&right_hpf[0], v->canvas_width, &mean_right, &stderr_right, &var_right, &cv_right, &stddev_right) ;
d_print("mean_right:%g\n", mean_right) ;
/* draw 2 reference lines, for mean height and z values on first derivative */
ly1 = AtoS(100-ABS(2.0*mean_right),200.0,1,v->canvas_height) ;
draw_a_line(da->style->white_gc, 0, ly1, v->canvas_width-1, ly1, green_color, 0) ;
ly1 = AtoS(2.5-ABS(1.0),5.0,1,v->canvas_height) ;
draw_a_line(da->style->white_gc, 0, ly1, v->canvas_width-1, ly1, red_color, 0) ;
}
#endif
gdk_gc_set_foreground(da->style->white_gc, white_color) ;
gdk_gc_set_foreground(da->style->black_gc, black_color) ;
view_scale = view_scale_save ;
}
void paint_screen_with_highlight(struct view *v, GtkWidget *da, int y1, int y2, int cursor_flag)
{
int x = sample_to_pixel(v, v->cursor_position) ;
GdkGC *MyGC = gdk_gc_new(da->window) ;
gdk_draw_pixmap(highlight_pixmap,
da->style->fg_gc[GTK_WIDGET_STATE (da)],
audio_pixmap,
0,0,
0,0,
v->canvas_width, v->canvas_height);
if(v->selection_region == TRUE) {
gint minx = region_select_min_x ;
gint maxx = region_select_max_x ;
if(audio_view.channel_selection_mask == 0x01)
draw_a_highlight_rect(MyGC, minx, 0, maxx, v->canvas_height/2, highlight_color) ;
else if(audio_view.channel_selection_mask == 0x02)
draw_a_highlight_rect(MyGC, minx, v->canvas_height/2, maxx, v->canvas_height-1, highlight_color) ;
else
draw_a_highlight_rect(MyGC, minx, 0, maxx, v->canvas_height-1, highlight_color) ;
}
#ifdef TRUNCATE_OLD
if(v->truncate_head > 0) {
gint maxx = sample_to_pixel(v, v->truncate_head) ;
if(maxx > 0) {
gint minx = sample_to_pixel(v, 0) ;
if(minx < 0) minx = 0 ;
draw_a_highlight_rect(MyGC, minx, 0, maxx, v->canvas_height-1, cut_highlight_color) ;
}
}
if(v->truncate_tail < v->n_samples-1) {
gint minx = sample_to_pixel(v, v->truncate_tail) ;
if(minx < v->canvas_width) {
gint maxx = sample_to_pixel(v, v->n_samples-1) ;
if(maxx > v->canvas_width-1) maxx = v->canvas_width-1 ;
draw_a_highlight_rect(MyGC, minx, 0, maxx, v->canvas_height-1, cut_highlight_color) ;
}
}
#endif /* TRUNCATE_OLD */
if(cursor_flag == TRUE) {
/* draw_a_cursor_line(MyGC, x-4, y1+4, x-4, y2-4, yellow_color, 0) ; */
/* draw_a_cursor_line(MyGC, x-3, y1+3, x-3, y2-3, yellow_color, 0) ; */
/* draw_a_cursor_line(MyGC, x-2, y1+2, x-2, y2-2, yellow_color, 0) ; */
/* draw_a_cursor_line(MyGC, x-1, y1+1, x-1, y2-1, yellow_color, 0) ; */
/* draw_a_cursor_line(MyGC, x+0, y1+0, x+0, y2+0, yellow_color, 0) ; */
last_cursor_x = x;
/**************** This is also in redraw *******************/
gdk_draw_pixmap(cursor_pixmap,
da->style->fg_gc[GTK_WIDGET_STATE (da)],
highlight_pixmap,
x,0,
0,0,
1, v->canvas_height);
draw_a_cursor_line(MyGC, x+0, 0, x+0, v->canvas_height-1, yellow_color, 0) ;
/* draw_a_cursor_line(MyGC, x+1, y1+1, x+1, y2-1, yellow_color, 0) ; */
/* draw_a_cursor_line(MyGC, x+2, y1+2, x+2, y2-2, yellow_color, 0) ; */
/* draw_a_cursor_line(MyGC, x+3, y1+3, x+3, y2-3, yellow_color, 0) ; */
/* draw_a_cursor_line(MyGC, x+4, y1+4, x+4, y2-4, yellow_color, 0) ; */
} else {
last_cursor_x = -1;
}
gdk_draw_pixmap(da->window,
da->style->fg_gc[GTK_WIDGET_STATE (da)],
highlight_pixmap,
0,0,
0,0,
v->canvas_width, v->canvas_height);
gdk_gc_unref(MyGC) ;
}
void redraw(struct view *v, struct sound_prefs *p, GtkWidget *da, int cursor_flag, int redraw_data, int sonogram_flag)
{
/* double left[MAX_BUF], right[MAX_BUF] ; */
fftw_real left[MAX_BUF], right[MAX_BUF] ;
long i, n ;
int pixels_per_sample = v->canvas_width / (v->last_sample - v->first_sample + 1) ;
double samples_per_pixel = (double)(v->last_sample - v->first_sample + 1) / (double)v->canvas_width ;
int draw_flag = 0 ;
int zero_left, zero_right ;
int y1 = v->canvas_height/2.0 - 4;
int y2 = y1 + 8 ;
static int first_time = 1 ;
static GdkColormap *my_map ;
GdkGC *MyGC ;
zero_left = AtoS(0,1.0,0,v->canvas_height) ;
zero_right = AtoS(0,1.0,1,v->canvas_height) ;
if(v->selection_region == FALSE) {
region_select_min_x = -1 ;
region_select_max_x = -1 ;
} else {
if(v->selection_region == TRUE) {
region_select_min_x = sample_to_pixel(v, v->selected_first_sample) ;
region_select_max_x = sample_to_pixel(v, v->selected_last_sample) ;
}
}
if(cursor_flag != TRUE) {
MyGC = gdk_gc_new(da->window) ;
} else {
if(v->cursor_position >= v->first_sample && v->cursor_position <= v->last_sample) {
int prev_x = sample_to_pixel(v, v->prev_cursor_position) ;
int x = sample_to_pixel(v, v->cursor_position) ;
if(x != prev_x) {
MyGC = gdk_gc_new(da->window) ;
if (last_cursor_x == -1) {
paint_screen_with_highlight(v, da, y1, y2, cursor_flag) ;
} else {
int x = sample_to_pixel(v, v->cursor_position) ;
/****** This is also in paint_screen_with_highlight *******/
gdk_draw_pixmap(highlight_pixmap,
da->style->fg_gc[GTK_WIDGET_STATE (da)],
cursor_pixmap,
0,0,
last_cursor_x,0,
1, v->canvas_height);
gdk_draw_pixmap(da->window,
da->style->fg_gc[GTK_WIDGET_STATE (da)],
cursor_pixmap,
0,0,
last_cursor_x,0,
1, v->canvas_height);
gdk_draw_pixmap(cursor_pixmap,
da->style->fg_gc[GTK_WIDGET_STATE (da)],
highlight_pixmap,
x,0,
0,0,
1, v->canvas_height);
draw_a_cursor_line(MyGC, x+0, 0, x+0, v->canvas_height-1, yellow_color, 0) ;
gdk_draw_pixmap(da->window,
da->style->fg_gc[GTK_WIDGET_STATE (da)],
highlight_pixmap,
x,0,
x,0,
1, v->canvas_height);
last_cursor_x = x;
}
gdk_gc_unref(MyGC) ;
} else {
}
v->prev_cursor_position = v->cursor_position ;
}
return ;