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-rw-r--r--plugins/mock/uca-mock-camera.c53
1 files changed, 43 insertions, 10 deletions
diff --git a/plugins/mock/uca-mock-camera.c b/plugins/mock/uca-mock-camera.c
index b2e8e80..18ac7db 100644
--- a/plugins/mock/uca-mock-camera.c
+++ b/plugins/mock/uca-mock-camera.c
@@ -22,6 +22,7 @@
#include "uca-mock-camera.h"
#define UCA_MOCK_CAMERA_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE((obj), UCA_TYPE_MOCK_CAMERA, UcaMockCameraPrivate))
+#define __CREATE_RANDOM_IMAGE_DATA__
static void uca_mock_initable_iface_init (GInitableIface *iface);
@@ -140,7 +141,12 @@ print_number (gchar *buffer, guint number, guint x, guint y, guint width)
{
for (int i = 0; i < DIGIT_WIDTH; i++) {
for (int j = 0; j < DIGIT_HEIGHT; j++) {
- buffer[(y+j)*width + (x+i)] = g_digits[number][j*DIGIT_WIDTH+i];
+ char val = (char) g_digits[number][j*DIGIT_WIDTH+i];
+ if(val != 0x00) {
+ //This should make the frame counter appear in a bright yellow
+ val = 0xBE;
+ }
+ buffer[(y+j)*width + (x+i)] = (guint8) val;
}
}
}
@@ -151,8 +157,6 @@ print_current_frame (UcaMockCameraPrivate *priv, gchar *buffer)
guint number = priv->current_frame;
guint divisor = 10000000;
int x = 1;
- const double mean = 128.0;
- const double std = 32.0;
while (divisor > 0) {
print_number(buffer, number / divisor, x, 1, priv->width);
@@ -161,16 +165,45 @@ print_current_frame (UcaMockCameraPrivate *priv, gchar *buffer)
x += DIGIT_WIDTH + 1;
}
+
+ //Rainbow pattern is the same for every row. Just calculate one single
+ //Scanline, so we can reuse it and dont have to do the whole calculation
+ //for every row again.
+ char default_line[priv->width];
+ for (int p = 0; p < priv->width; p++) {
+ default_line[p] = (char) ((p*256) / (priv->width));
+ }
+
+
+ //Use memcpy to quickly fill every row with the precalculated rainbow
+ //pattern
for (guint y = 16; y < priv->height; y++) {
guint index = y * priv->width;
-
- for (guint i = 0; i < priv->width; i++, index++) {
- double u1 = g_rand_double (priv->rand);
- double u2 = g_rand_double (priv->rand);
- double r = sqrt(-2 * log(u1)) * cos(2 * G_PI * u2);
- buffer[index] = (guint8) (r * std + mean);
- }
+ memcpy(&buffer[index], &default_line[0], priv->width);
}
+
+ #ifdef __CREATE_RANDOM_IMAGE_DATA__
+
+ //This block will fill a square at the center of the image with noraml
+ //distributed random data
+ const double mean = 128.0;
+ const double std = 32.0;
+
+ for (guint y = (priv->height/3); y < ((priv->height*2)/3); y++) {
+ guint row_start = y * priv->width;
+ for (guint i = (priv->width/3); i < ((priv->width*2)/3); i++) {
+ int index = row_start + i;
+ double u1 = g_rand_double(priv->rand);
+ double u2 = g_rand_double(priv->rand);
+ double r = sqrt(-2 * log(u1)) * cos(2 * G_PI * u2);
+ buffer[index] = (guint8) (r * std + mean);
+ }
+ }
+
+ #endif
+
+
+
}
static gpointer