Make painting of image cleaner, flickering gone, need for alpha removed which reduces CPU load a lot
This commit is contained in:
Nicole Faerber
parent
0472272371
commit
28bdc82453
3 changed files with 141 additions and 133 deletions
191
flirgtk.c
191
flirgtk.c
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@ -20,9 +20,8 @@
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#include <gtk/gtk.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include "cairo_jpg/src/cairo_jpg.h"
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@ -39,15 +38,16 @@
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static GtkWidget *window = NULL;
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static GtkWidget *image_darea = NULL;
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static GtkApplication *gapp;
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// static GtkApplication *gapp;
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static GtkWidget *play_button, *stop_button;
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// we paint everything in here and then into the drawing area widget
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static cairo_surface_t *psurface;
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static cairo_surface_t *surface = NULL;
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//static cairo_surface_t *surface = NULL;
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// internal frame buffer with 640x480 pixels of 4 byte each,
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// first byte unused, R, G, B 0x00RRGGBB
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unsigned char fbuffer[640*500*4];
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unsigned char *fbdata;
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//unsigned char *fbdata;
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unsigned char *color_palette;
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gboolean pending=FALSE;
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gboolean ircam=TRUE;
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@ -58,11 +58,12 @@ gpointer cam_thread_main(gpointer user_data);
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extern double t_min, t_max, t_center;
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#define BUF85SIZE 1048576
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unsigned char *ir_buffer=NULL; // IR image as 24 bit RGB+A
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unsigned char *jpeg_buffer=NULL;
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unsigned int jpeg_size=0;
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void draw_palette(void);
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//void draw_palette(void);
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static gboolean
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@ -70,53 +71,121 @@ configure_event (GtkWidget *widget,
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GdkEventConfigure *event,
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gpointer data)
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{
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GtkAllocation allocation;
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int stride;
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//GtkAllocation allocation;
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if (surface)
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cairo_surface_destroy (surface);
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gtk_widget_get_allocation (widget, &allocation);
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// g_printerr("configure event %d x %d\n", allocation.width, allocation.height);
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stride = cairo_format_stride_for_width (CAIRO_FORMAT_RGB24, 640);
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// g_printerr("stride %d\n", stride);
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surface = cairo_image_surface_create_for_data (fbuffer,
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CAIRO_FORMAT_RGB24,
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640,
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500,
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stride);
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fbdata = cairo_image_surface_get_data(surface);
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// if (surface)
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// cairo_surface_destroy (surface);
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// gtk_widget_get_allocation (widget, &allocation);
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// surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24,
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// 640,
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// 500);
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// fbdata = cairo_image_surface_get_data(surface);
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// memset(fbdata, 0x00, 640*500*4);
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draw_palette();
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// draw_palette();
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/* We've handled the configure event, no need for further processing. */
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return TRUE;
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}
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// 256 colors (8bit), two hor pixel per color
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// piture width = 640, center scale, i.e. start at 64
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cairo_surface_t
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*draw_palette(void)
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{
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unsigned int *p1, *pc;
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int x,y;
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static cairo_surface_t *ps=NULL;
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//static unsigned char *cm=NULL;
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cairo_t *cr;
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unsigned char *fbdata;
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char tdisp[16];
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#define P_XPOS 175
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if (ps==NULL)
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ps=cairo_image_surface_create(CAIRO_FORMAT_RGB24, 640, 20);
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cr=cairo_create(ps);
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fbdata=cairo_image_surface_get_data(ps);
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memset(fbdata,0,(640*20*4));
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y=5;
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for (x=0; x<256; x++) {
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fbdata[4* y * 640 + ((x+P_XPOS)*4)] = color_palette[3 * x + 2]; // B
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fbdata[(4* y * 640 + ((x+P_XPOS)*4))+1] = color_palette[3 * x + 1]; // G
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fbdata[(4* y * 640 + ((x+P_XPOS)*4))+2] = color_palette[3 * x]; // R
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}
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y=5;
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p1 = (unsigned int *)&fbdata[4 * y * 640 + (P_XPOS*4)]; // pointer to start of line
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for (y=5; y<15; y++) {
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pc = (unsigned int *)&fbdata[4 * y * 640 + (P_XPOS*4)]; // pointer to start of copy line
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memcpy(pc,p1,256*4);
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}
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// update palette scale temperature range
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snprintf(tdisp, 16, "%.1f°C", t_min);
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cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
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cairo_select_font_face (cr, "Sans",
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CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL);
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cairo_set_font_size (cr, 18);
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cairo_move_to (cr, 102, 16);
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cairo_show_text (cr, tdisp);
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snprintf(tdisp, 16, "%.1f°C", t_max);
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cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
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cairo_select_font_face (cr, "Sans",
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CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL);
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cairo_set_font_size (cr, 18);
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cairo_move_to (cr, 440, 16);
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cairo_show_text (cr, tdisp);
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cairo_surface_flush(ps);
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cairo_destroy(cr);
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return ps;
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}
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static gboolean
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draw_event (GtkWidget *widget,
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cairo_t *cr,
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cairo_t *wcr,
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gpointer data)
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{
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char tdisp[16];
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//unsigned char *fbdata;
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cairo_surface_t *jpeg_surface;
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cairo_surface_t *ir_surface;
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cairo_surface_t *palette_surface;
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cairo_t *cr;
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if (pending) {
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cr=cairo_create(psurface);
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// cairo_set_source_rgb(cr, 0, 0, 0);
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// cairo_paint (cr);
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cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
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// first draw the frame buffer containing the IR frame
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if (ircam) {
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cairo_set_source_surface (cr, surface, 0, 0);
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cairo_paint (cr);
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if (ircam && ir_buffer!=NULL) {
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ir_surface=cairo_image_surface_create_for_data (ir_buffer,
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CAIRO_FORMAT_RGB24,
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160,
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120,
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4*160);
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cairo_save(cr);
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cairo_scale (cr, 4.0, 4.0);
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cairo_set_source_surface (cr, ir_surface, 0, 0);
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cairo_paint (cr);
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cairo_restore(cr);
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cairo_surface_destroy (ir_surface);
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}
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if (jpeg_size != 0 && jpeg_buffer != NULL) {
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// g_printerr(" draw event %d\n", jpeg_size);
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if (viscam) {
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jpeg_surface=cairo_image_surface_create_from_jpeg_mem(jpeg_buffer, jpeg_size);
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cairo_save(cr);
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cairo_scale (cr, (1./2.25), (1./2.25));
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cairo_set_source_surface (cr, jpeg_surface, 0, 0);
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// cairo_set_operator (cr, CAIRO_OPERATOR_OVERLAY);
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if (ircam)
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cairo_paint_with_alpha (cr, 0.3);
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else
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@ -127,7 +196,16 @@ if (pending) {
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jpeg_size=0;
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jpeg_buffer=NULL;
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}
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// then draw decoration on top
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// the color palette with min/max temperatures
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palette_surface=draw_palette();
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cairo_save(cr);
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cairo_rectangle(cr,0,481,640,500);
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cairo_clip(cr);
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cairo_set_source_surface (cr, palette_surface, 0, 481);
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cairo_paint (cr);
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cairo_restore(cr);
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// crosshair in the center
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cairo_set_line_width (cr, 3);
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@ -157,25 +235,14 @@ if (pending) {
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cairo_move_to (cr, 330, 220);
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cairo_show_text (cr, tdisp);
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// update palette scale temperature range
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snprintf(tdisp, 16, "%.1f°C", t_min);
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cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
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cairo_select_font_face (cr, "Sans",
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CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL);
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cairo_set_font_size (cr, 18);
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cairo_move_to (cr, 102, 496);
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cairo_show_text (cr, tdisp);
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snprintf(tdisp, 16, "%.1f°C", t_max);
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cairo_set_source_rgb (cr, 1.0, 1.0, 1.0);
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cairo_select_font_face (cr, "Sans",
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CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL);
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cairo_set_font_size (cr, 18);
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cairo_move_to (cr, 440, 496);
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cairo_show_text (cr, tdisp);
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//cairo_surface_write_to_png (cairo_get_target(cr), "shot.png");
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cairo_destroy(cr);
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pending = FALSE;
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}
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cairo_set_source_surface (wcr, psurface, 0, 0);
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cairo_paint (wcr);
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return FALSE;
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}
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@ -193,7 +260,7 @@ void
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store_shot_clicked(GtkWidget *button, gpointer user_data)
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{
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//cairo_surface_t *cairo_get_target (cairo_t *cr);
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cairo_surface_write_to_png (surface, "shot.png");
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// cairo_surface_write_to_png (surface, "shot.png");
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}
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void
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@ -201,6 +268,8 @@ start_clicked(GtkWidget *button, gpointer user_data)
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{
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if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(play_button))) {
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flir_run = TRUE;
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if (ir_buffer == NULL)
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g_printerr("ir_buffer\n");
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g_thread_new ("CAM thread", cam_thread_main, NULL);
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gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON(stop_button), FALSE);
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}
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@ -243,28 +312,6 @@ handle_timeout (gpointer user_data)
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return TRUE;
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}
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// 256 colors (8bit), two hor pixel per color
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// piture width = 640, center scale, i.e. start at 64
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void
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draw_palette(void)
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{
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unsigned int *p1, *pc;
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int x,y;
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y=481; // leave one line blank/black
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for (x=0; x<256; x++) {
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fbdata[4*y * 640 + (x+174)*4] = color_palette[3 * x + 2]; // B
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fbdata[(4*y * 640 + (x+174)*4)+1] = color_palette[3 * x + 1]; // G
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fbdata[(4*y * 640 + (x+174)*4)+2] = color_palette[3 * x]; // R
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}
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y=481;
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p1 = (unsigned int *)&fbdata[4*y * 640]; // pointer to start of line
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for (y=482; y<500; y++) {
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pc = (unsigned int *)&fbdata[4*y * 640]; // pointer to start of copy line
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memcpy(pc,p1,640*4);
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}
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}
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void
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palette_changed (GtkComboBox *widget, gpointer user_data)
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{
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@ -284,7 +331,7 @@ int act;
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if (act == 7) color_palette = palette_Iron2;
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if (act == 8) color_palette = palette_Iron_Black;
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if (act == 9) color_palette = palette_Rainbow;
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draw_palette();
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// draw_palette();
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};
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}
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@ -292,7 +339,7 @@ int act;
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GtkWidget *
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create_main_window (void)
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{
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GtkWidget *gappw;
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//GtkWidget *gappw;
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GtkWidget *box;
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GtkWidget *hbox;
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GtkWidget *w, *i;
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@ -376,6 +423,9 @@ GtkWidget *w, *i;
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1.0,
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.01);
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//psurface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 640, 500);
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psurface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, 640, 500);
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image_darea = gtk_drawing_area_new ();
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/* set a minimum size */
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gtk_widget_set_size_request (image_darea, 640, 500);
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@ -388,7 +438,6 @@ GtkWidget *w, *i;
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G_CALLBACK (configure_event), NULL);
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// camera-photo
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// w = gtk_button_new_with_label("Shot");
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w = gtk_button_new_from_icon_name("camera-photo", GTK_ICON_SIZE_DND);
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gtk_container_add (GTK_CONTAINER (box), w);
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