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-rw-r--r--tools/gui/control.c70
-rw-r--r--tools/gui/control.glade112
-rw-r--r--tools/gui/egg-histogram-view.c234
-rw-r--r--tools/gui/egg-histogram-view.h4
4 files changed, 315 insertions, 105 deletions
diff --git a/tools/gui/control.c b/tools/gui/control.c
index b36d188..214e4da 100644
--- a/tools/gui/control.c
+++ b/tools/gui/control.c
@@ -19,10 +19,7 @@
#include <gtk/gtk.h>
#include <gdk/gdk.h>
#include <gdk/gdkkeysyms.h>
-#include <string.h>
-#include <time.h>
-#include <unistd.h>
-#include <errno.h>
+#include <math.h>
#include "config.h"
#include "uca-camera.h"
@@ -56,39 +53,28 @@ static UcaPluginManager *plugin_manager;
static void
-convert_8bit_to_rgb (guchar *output, guchar *input, int width, int height)
+convert_8bit_to_rgb (guchar *output, guchar *input, gint width, gint height, gdouble min, gdouble max)
{
+ gdouble factor = 255.0 / (max - min);
+
for (int i = 0, j = 0; i < width*height; i++) {
- output[j++] = input[i];
- output[j++] = input[i];
- output[j++] = input[i];
+ guchar val = (guchar) ((input[i] - min) * factor);
+ output[j++] = val;
+ output[j++] = val;
+ output[j++] = val;
}
}
static void
-convert_16bit_to_rgb (guchar *output, guchar *input, int width, int height)
+convert_16bit_to_rgb (guchar *output, guchar *input, gint width, gint height, gdouble min, gdouble max)
{
- guint16 *in = (guint16 *) input;
- guint16 min = G_MAXUINT16, max = 0;
- gfloat spread = 0.0f;
-
- for (int i = 0; i < width * height; i++) {
- guint16 v = in[i];
- if (v < min)
- min = v;
- if (v > max)
- max = v;
- }
-
- spread = (gfloat) max - min;
+ gdouble factor = 255.0 / (max - min);
- if (spread > 0.0f) {
- for (int i = 0, j = 0; i < width*height; i++) {
- guchar val = (guint8) (((in[i] - min) / spread) * 255.0f);
- output[j++] = val;
- output[j++] = val;
- output[j++] = val;
- }
+ for (int i = 0, j = 0; i < width*height; i++) {
+ guchar val = (guint8) ((input[i] - min) * factor);
+ output[j++] = val;
+ output[j++] = val;
+ output[j++] = val;
}
}
@@ -100,6 +86,9 @@ grab_thread (void *args)
gint counter = 0;
while (data->running) {
+ gdouble min_value;
+ gdouble max_value;
+
uca_camera_grab (data->camera, (gpointer) &data->buffer, NULL);
if (data->store) {
@@ -111,11 +100,12 @@ grab_thread (void *args)
/* FIXME: We should actually check if this is really a new frame and
* just do nothing if it is an already displayed one. */
+ egg_histogram_get_visible_range (EGG_HISTOGRAM_VIEW (data->histogram_view), &min_value, &max_value);
+
if (data->pixel_size == 1)
- convert_8bit_to_rgb (data->pixels, data->buffer, data->width, data->height);
- else if (data->pixel_size == 2) {
- convert_16bit_to_rgb (data->pixels, data->buffer, data->width, data->height);
- }
+ convert_8bit_to_rgb (data->pixels, data->buffer, data->width, data->height, min_value, max_value);
+ else if (data->pixel_size == 2)
+ convert_16bit_to_rgb (data->pixels, data->buffer, data->width, data->height, min_value, max_value);
gdk_threads_enter ();
@@ -221,6 +211,7 @@ create_main_window (GtkBuilder *builder, const gchar* camera_name)
GdkPixbuf *pixbuf;
GtkBox *histogram_box;
GtkContainer *scrolled_property_window;
+ GtkAdjustment *max_bin_adjustment;
static ThreadData td;
GError *error = NULL;
@@ -259,7 +250,8 @@ create_main_window (GtkBuilder *builder, const gchar* camera_name)
histogram_box = GTK_BOX (gtk_builder_get_object (builder, "histogram-box"));
gtk_box_pack_start (histogram_box, td.histogram_view, TRUE, TRUE, 6);
- egg_histogram_view_set_data (EGG_HISTOGRAM_VIEW (td.histogram_view), td.buffer, td.width * td.height, bits_per_sample, 256);
+ egg_histogram_view_set_data (EGG_HISTOGRAM_VIEW (td.histogram_view),
+ td.buffer, td.width * td.height, bits_per_sample, 256);
window = GTK_WIDGET (gtk_builder_get_object (builder, "window"));
g_signal_connect (window, "destroy", G_CALLBACK (on_destroy), &td);
@@ -269,6 +261,16 @@ create_main_window (GtkBuilder *builder, const gchar* camera_name)
td.record_button = GTK_WIDGET (gtk_builder_get_object (builder, "record-button"));
set_tool_button_state (&td);
+ g_object_bind_property (gtk_builder_get_object (builder, "min_bin_value_adjustment"), "value",
+ td.histogram_view, "minimum-bin-value",
+ G_BINDING_DEFAULT);
+
+ max_bin_adjustment = GTK_ADJUSTMENT (gtk_builder_get_object (builder, "max_bin_value_adjustment"));
+ gtk_adjustment_set_value (max_bin_adjustment, pow (2, bits_per_sample) - 1);
+ g_object_bind_property (max_bin_adjustment, "value",
+ td.histogram_view, "maximum-bin-value",
+ G_BINDING_DEFAULT);
+
g_signal_connect (td.start_button, "clicked", G_CALLBACK (on_start_button_clicked), &td);
g_signal_connect (td.stop_button, "clicked", G_CALLBACK (on_stop_button_clicked), &td);
g_signal_connect (td.record_button, "clicked", G_CALLBACK (on_record_button_clicked), &td);
diff --git a/tools/gui/control.glade b/tools/gui/control.glade
index 7ef712d..ebe2cc8 100644
--- a/tools/gui/control.glade
+++ b/tools/gui/control.glade
@@ -204,17 +204,97 @@
<placeholder/>
</child>
<child>
- <object class="GtkCheckButton" id="histogram-checkbutton">
- <property name="label" translatable="yes">Enable Live Update</property>
+ <object class="GtkTable" id="table1">
<property name="visible">True</property>
- <property name="can_focus">True</property>
- <property name="receives_default">False</property>
<property name="border_width">6</property>
- <property name="active">True</property>
- <property name="draw_indicator">True</property>
+ <property name="n_rows">3</property>
+ <property name="n_columns">2</property>
+ <property name="column_spacing">6</property>
+ <property name="row_spacing">6</property>
+ <child>
+ <object class="GtkLabel" id="label2">
+ <property name="visible">True</property>
+ <property name="xalign">1</property>
+ <property name="label" translatable="yes">Minimum Value:</property>
+ </object>
+ <packing>
+ <property name="x_options">GTK_FILL</property>
+ <property name="y_options"></property>
+ <property name="x_padding">6</property>
+ <property name="y_padding">6</property>
+ </packing>
+ </child>
+ <child>
+ <object class="GtkSpinButton" id="spinbutton1">
+ <property name="width_request">100</property>
+ <property name="visible">True</property>
+ <property name="can_focus">True</property>
+ <property name="invisible_char">•</property>
+ <property name="adjustment">min_bin_value_adjustment</property>
+ </object>
+ <packing>
+ <property name="left_attach">1</property>
+ <property name="right_attach">2</property>
+ <property name="x_options">GTK_EXPAND</property>
+ <property name="y_options"></property>
+ </packing>
+ </child>
+ <child>
+ <object class="GtkLabel" id="label3">
+ <property name="visible">True</property>
+ <property name="xalign">1</property>
+ <property name="label" translatable="yes">Maximum Value:</property>
+ </object>
+ <packing>
+ <property name="top_attach">1</property>
+ <property name="bottom_attach">2</property>
+ <property name="x_options">GTK_FILL</property>
+ <property name="y_options"></property>
+ <property name="x_padding">6</property>
+ <property name="y_padding">6</property>
+ </packing>
+ </child>
+ <child>
+ <object class="GtkSpinButton" id="spinbutton2">
+ <property name="width_request">100</property>
+ <property name="visible">True</property>
+ <property name="can_focus">True</property>
+ <property name="invisible_char">•</property>
+ <property name="adjustment">max_bin_value_adjustment</property>
+ </object>
+ <packing>
+ <property name="left_attach">1</property>
+ <property name="right_attach">2</property>
+ <property name="top_attach">1</property>
+ <property name="bottom_attach">2</property>
+ <property name="x_options">GTK_EXPAND</property>
+ <property name="y_options"></property>
+ </packing>
+ </child>
+ <child>
+ <object class="GtkCheckButton" id="histogram-checkbutton">
+ <property name="label" translatable="yes">Live Update</property>
+ <property name="visible">True</property>
+ <property name="can_focus">True</property>
+ <property name="receives_default">False</property>
+ <property name="border_width">6</property>
+ <property name="active">True</property>
+ <property name="draw_indicator">True</property>
+ </object>
+ <packing>
+ <property name="top_attach">2</property>
+ <property name="bottom_attach">3</property>
+ <property name="x_options"></property>
+ <property name="y_options"></property>
+ </packing>
+ </child>
+ <child>
+ <placeholder/>
+ </child>
</object>
<packing>
- <property name="pack_type">end</property>
+ <property name="expand">False</property>
+ <property name="fill">False</property>
<property name="position">1</property>
</packing>
</child>
@@ -264,13 +344,6 @@
</object>
</child>
</object>
- <object class="GtkAdjustment" id="adjustment_scale">
- <property name="value">65535</property>
- <property name="lower">1</property>
- <property name="upper">65535</property>
- <property name="step_increment">1</property>
- <property name="page_increment">10</property>
- </object>
<object class="GtkWindow" id="choice-window">
<property name="border_width">6</property>
<child>
@@ -352,4 +425,15 @@
</object>
</child>
</object>
+ <object class="GtkAdjustment" id="min_bin_value_adjustment">
+ <property name="upper">65535</property>
+ <property name="step_increment">1</property>
+ <property name="page_increment">10</property>
+ </object>
+ <object class="GtkAdjustment" id="max_bin_value_adjustment">
+ <property name="value">256</property>
+ <property name="upper">65535</property>
+ <property name="step_increment">1</property>
+ <property name="page_increment">10</property>
+ </object>
</interface>
diff --git a/tools/gui/egg-histogram-view.c b/tools/gui/egg-histogram-view.c
index 7abc2be..91e61e8 100644
--- a/tools/gui/egg-histogram-view.c
+++ b/tools/gui/egg-histogram-view.c
@@ -34,11 +34,14 @@ struct _EggHistogramViewPrivate
/* This could be moved into a real histogram class */
guint n_bins;
gint *bins;
- gint min_value;
- gint max_value;
- gint min_border;
+ gint *grabbed;
+ gint min_border; /* threshold set in screen units */
gint max_border;
+ gdouble min_value; /* lowest value of the first bin */
+ gdouble max_value; /* highest value of the last bin */
+ gdouble range;
+
gpointer data;
gint n_elements;
gint n_bits;
@@ -47,6 +50,8 @@ struct _EggHistogramViewPrivate
enum
{
PROP_0,
+ PROP_MINIMUM_BIN_VALUE,
+ PROP_MAXIMUM_BIN_VALUE,
N_PROPERTIES
};
@@ -71,6 +76,7 @@ egg_histogram_view_set_data (EggHistogramView *view,
{
EggHistogramViewPrivate *priv;
+ g_return_if_fail (EGG_IS_HISTOGRAM_VIEW (view));
priv = view->priv;
if (priv->bins != NULL)
@@ -82,16 +88,46 @@ egg_histogram_view_set_data (EggHistogramView *view,
priv->n_bits = n_bits;
priv->n_elements = n_elements;
- priv->min_value = 0;
+ priv->min_value = 0.0;
priv->max_value = (gint) pow(2, n_bits) - 1;
- priv->min_border = 20;
- priv->max_border = priv->max_value - 20;
+ priv->min_border = 0;
+ priv->max_border = 256;
+ priv->range = priv->max_value - priv->min_value;
+}
+
+void
+egg_histogram_get_visible_range (EggHistogramView *view, gdouble *min, gdouble *max)
+{
+ EggHistogramViewPrivate *priv;
+ GtkAllocation allocation;
+ gdouble width;
+
+ g_return_if_fail (EGG_IS_HISTOGRAM_VIEW (view));
+
+ gtk_widget_get_allocation (GTK_WIDGET (view), &allocation);
+ width = (gdouble) allocation.width - 2 * BORDER;
+ priv = view->priv;
+
+ *min = (priv->min_border - 2) / width * priv->range;
+ *max = (priv->max_border - 2) / width * priv->range;
+}
+
+static void
+set_max_border (EggHistogramView *view)
+{
+ GtkAllocation allocation;
+
+ g_return_if_fail (EGG_IS_HISTOGRAM_VIEW (view));
+ gtk_widget_get_allocation (GTK_WIDGET (view), &allocation);
+ view->priv->max_border = allocation.width - 2 * BORDER;
}
static void
compute_histogram (EggHistogramViewPrivate *priv)
{
+ guint n_bins = priv->n_bins - 1;
+
for (guint i = 0; i < priv->n_bins; i++)
priv->bins[i] = 0;
@@ -100,8 +136,11 @@ compute_histogram (EggHistogramViewPrivate *priv)
for (guint i = 0; i < priv->n_elements; i++) {
guint8 v = data[i];
- guint index = (guint) round (((gdouble) v) / priv->max_value * (priv->n_bins - 1));
- priv->bins[index]++;
+
+ if (v >= priv->min_value && v <= priv->max_value) {
+ guint index = (guint) round (((gdouble) v) / priv->max_value * n_bins);
+ priv->bins[index]++;
+ }
}
}
else if (priv->n_bits == 16) {
@@ -109,8 +148,11 @@ compute_histogram (EggHistogramViewPrivate *priv)
for (guint i = 0; i < priv->n_elements; i++) {
guint16 v = data[i];
- guint index = (guint) floor (((gdouble ) v) / priv->max_value * (priv->n_bins - 1));
- priv->bins[index]++;
+
+ if (v >= priv->min_value && v <= priv->max_value) {
+ guint index = (guint) floor (((gdouble ) v) / priv->max_value * n_bins);
+ priv->bins[index]++;
+ }
}
}
else
@@ -137,6 +179,36 @@ egg_histogram_view_size_request (GtkWidget *widget,
requisition->height = MIN_HEIGHT;
}
+static void
+draw_bins (EggHistogramViewPrivate *priv,
+ cairo_t *cr,
+ gint width,
+ gint height)
+{
+ gdouble skip = ((gdouble) width) / priv->n_bins;
+ gdouble x = BORDER;
+ gdouble ys = height + BORDER - 1;
+ gint max_value = 0;
+
+ for (guint i = 0; i < priv->n_bins; i++) {
+ if (priv->bins[i] > max_value)
+ max_value = priv->bins[i];
+ }
+
+ if (max_value == 0)
+ return;
+
+ for (guint i = 0; i < priv->n_bins && x < (width - BORDER); i++, x += skip) {
+ if (priv->bins[i] == 0)
+ continue;
+
+ gint y = (gint) ((height - 2) * priv->bins[i]) / max_value;
+ cairo_move_to (cr, round (x), ys);
+ cairo_line_to (cr, round (x), ys - y);
+ cairo_stroke (cr);
+ }
+}
+
static gboolean
egg_histogram_view_expose (GtkWidget *widget,
GdkEventExpose *event)
@@ -146,7 +218,6 @@ egg_histogram_view_expose (GtkWidget *widget,
GtkStyle *style;
cairo_t *cr;
gint width, height;
- gint max_value = 0;
priv = EGG_HISTOGRAM_VIEW_GET_PRIVATE (widget);
cr = gdk_cairo_create (gtk_widget_get_window (widget));
@@ -181,36 +252,15 @@ egg_histogram_view_expose (GtkWidget *widget,
/* Draw border areas */
gdk_cairo_set_source_color (cr, &style->dark[GTK_STATE_NORMAL]);
- if (priv->min_border > 0) {
- cairo_rectangle (cr, BORDER, BORDER, priv->min_border + 0.5, height - 1);
- cairo_fill (cr);
- }
-
- /* Draw spikes */
- for (guint i = 0; i < priv->n_bins; i++) {
- if (priv->bins[i] > max_value)
- max_value = priv->bins[i];
- }
+ cairo_rectangle (cr, BORDER, BORDER, priv->min_border + 0.5, height - 1);
+ cairo_fill (cr);
- if (max_value == 0)
- goto cleanup;
+ cairo_rectangle (cr, priv->max_border + 0.5, BORDER, width - priv->min_border - 0.5, height - 1);
+ cairo_fill (cr);
+ /* Draw spikes */
gdk_cairo_set_source_color (cr, &style->black);
-
- if (width > priv->n_bins) {
- gdouble skip = ((gdouble) width) / priv->n_bins;
- gdouble x = 1;
-
- for (guint i = 0; i < priv->n_bins; i++, x += skip) {
- if (priv->bins[i] == 0)
- continue;
-
- gint y = (gint) ((height - 2) * priv->bins[i]) / max_value;
- cairo_move_to (cr, round (x + BORDER), height + BORDER - 1);
- cairo_line_to (cr, round (x + BORDER), height + BORDER - 1 - y);
- cairo_stroke (cr);
- }
- }
+ draw_bins (priv, cr, width, height);
cleanup:
cairo_destroy (cr);
@@ -242,9 +292,42 @@ egg_histogram_view_set_property (GObject *object,
const GValue *value,
GParamSpec *pspec)
{
+ EggHistogramViewPrivate *priv;
+
g_return_if_fail (EGG_IS_HISTOGRAM_VIEW (object));
+ priv = EGG_HISTOGRAM_VIEW_GET_PRIVATE (object);
switch (property_id) {
+ case PROP_MINIMUM_BIN_VALUE:
+ {
+ gdouble v = g_value_get_double (value);
+
+ if (v > priv->max_value)
+ g_warning ("Minimum value `%f' larger than maximum value `%f'",
+ v, priv->max_value);
+ else {
+ priv->min_value = v;
+ priv->range = priv->max_value - v;
+ priv->min_border = 0;
+ }
+ }
+ break;
+
+ case PROP_MAXIMUM_BIN_VALUE:
+ {
+ gdouble v = g_value_get_double (value);
+
+ if (v < priv->min_value)
+ g_warning ("Maximum value `%f' larger than minimum value `%f'",
+ v, priv->min_value);
+ else {
+ priv->max_value = v;
+ priv->range = v - priv->min_value;
+ set_max_border (EGG_HISTOGRAM_VIEW (object));
+ }
+ }
+ break;
+
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
return;
@@ -257,20 +340,48 @@ egg_histogram_view_get_property (GObject *object,
GValue *value,
GParamSpec *pspec)
{
+ EggHistogramViewPrivate *priv;
+
g_return_if_fail (EGG_IS_HISTOGRAM_VIEW (object));
+ priv = EGG_HISTOGRAM_VIEW_GET_PRIVATE (object);
switch (property_id) {
+ case PROP_MINIMUM_BIN_VALUE:
+ g_value_set_double (value, priv->min_value);
+ break;
+
+ case PROP_MAXIMUM_BIN_VALUE:
+ g_value_set_double (value, priv->max_value);
+ break;
+
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
return;
}
}
-static gint
-get_mouse_distance (EggHistogramViewPrivate *priv,
+static gboolean
+is_on_border (EggHistogramViewPrivate *priv,
+ gint x)
+{
+ gint d1 = (priv->min_border + BORDER) - x;
+ gint d2 = (priv->max_border + BORDER) - x;
+ return ABS (d1) < 6 || ABS (d2) < 6;
+}
+
+static gint *
+get_grabbed_border (EggHistogramViewPrivate *priv,
gint x)
{
- return (priv->min_border + BORDER) - x;
+ gint d1 = (priv->min_border + BORDER) - x;
+ gint d2 = (priv->max_border + BORDER) - x;
+
+ if (ABS (d1) < 6)
+ return &priv->min_border;
+ else if (ABS (d2) < 6)
+ return &priv->max_border;
+
+ return NULL;
}
static gboolean
@@ -284,13 +395,12 @@ egg_histogram_view_motion_notify (GtkWidget *widget,
priv = view->priv;
if (priv->grabbing) {
- priv->min_border = event->x + BORDER;
+ *priv->grabbed = event->x;
+
gtk_widget_queue_draw (widget);
}
else {
- gint distance = get_mouse_distance (priv, event->x);
-
- if (ABS(distance) < 6)
+ if (is_on_border (priv, event->x))
set_cursor_type (view, GDK_FLEUR);
else
set_cursor_type (view, GDK_ARROW);
@@ -304,18 +414,10 @@ egg_histogram_view_button_release (GtkWidget *widget,
GdkEventButton *event)
{
EggHistogramView *view;
- EggHistogramViewPrivate *priv;
- /* GtkAllocation allocation; */
- /* gint width; */
-
- /* gtk_widget_get_allocation (widget, &allocation); */
- /* width = allocation.width - 2 * BORDER; */
view = EGG_HISTOGRAM_VIEW (widget);
- priv = view->priv;
-
set_cursor_type (view, GDK_ARROW);
- priv->grabbing = FALSE;
+ view->priv->grabbing = FALSE;
return TRUE;
}
@@ -326,14 +428,13 @@ egg_histogram_view_button_press (GtkWidget *widget,
{
EggHistogramView *view;
EggHistogramViewPrivate *priv;
- gint distance;
view = EGG_HISTOGRAM_VIEW (widget);
priv = view->priv;
- distance = get_mouse_distance (priv, event->x);
- if (ABS (distance) < 6) {
+ if (is_on_border (priv, event->x)) {
priv->grabbing = TRUE;
+ priv->grabbed = get_grabbed_border (priv, event->x);
set_cursor_type (view, GDK_FLEUR);
}
@@ -357,6 +458,23 @@ egg_histogram_view_class_init (EggHistogramViewClass *klass)
widget_class->button_release_event = egg_histogram_view_button_release;
widget_class->motion_notify_event = egg_histogram_view_motion_notify;
+ egg_histogram_view_properties[PROP_MINIMUM_BIN_VALUE] =
+ g_param_spec_double ("minimum-bin-value",
+ "Smallest possible bin value",
+ "Smallest possible bin value, everything below is discarded.",
+ 0.0, G_MAXDOUBLE, 0.0,
+ G_PARAM_READWRITE);
+
+ egg_histogram_view_properties[PROP_MAXIMUM_BIN_VALUE] =
+ g_param_spec_double ("maximum-bin-value",
+ "Largest possible bin value",
+ "Largest possible bin value, everything above is discarded.",
+ 0.0, G_MAXDOUBLE, 256.0,
+ G_PARAM_READWRITE);
+
+ g_object_class_install_property (object_class, PROP_MINIMUM_BIN_VALUE, egg_histogram_view_properties[PROP_MINIMUM_BIN_VALUE]);
+ g_object_class_install_property (object_class, PROP_MAXIMUM_BIN_VALUE, egg_histogram_view_properties[PROP_MAXIMUM_BIN_VALUE]);
+
g_type_class_add_private (klass, sizeof (EggHistogramViewPrivate));
}
@@ -371,6 +489,8 @@ egg_histogram_view_init (EggHistogramView *view)
priv->data = NULL;
priv->n_bins = 0;
priv->n_elements = 0;
+ priv->min_value = priv->min_border = 0;
+ priv->max_value = priv->max_border = 256;
priv->cursor_type = GDK_ARROW;
priv->grabbing = FALSE;
diff --git a/tools/gui/egg-histogram-view.h b/tools/gui/egg-histogram-view.h
index a1df0ba..61a1c8c 100644
--- a/tools/gui/egg-histogram-view.h
+++ b/tools/gui/egg-histogram-view.h
@@ -53,6 +53,10 @@ void egg_histogram_view_set_data (EggHistogramView *view,
guint n_elements,
guint n_bits,
guint n_bins);
+void egg_histogram_get_visible_range
+ (EggHistogramView *view,
+ gdouble *min,
+ gdouble *max);
G_END_DECLS
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-29 11:05:05 +0000