From b85255a2b51a601b4819b150ade9b16887a06c23 Mon Sep 17 00:00:00 2001
From: Matthias Vogelgesang <matthias.vogelgesang@gmail.com>
Date: Tue, 17 Apr 2012 17:06:10 +0200
Subject: Print the current frame as feed-back

---
 src/cameras/uca-mock-camera.c | 92 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 92 insertions(+)

(limited to 'src')

diff --git a/src/cameras/uca-mock-camera.c b/src/cameras/uca-mock-camera.c
index da186a8..d27423e 100644
--- a/src/cameras/uca-mock-camera.c
+++ b/src/cameras/uca-mock-camera.c
@@ -71,6 +71,7 @@ struct _UcaMockCameraPrivate {
     gfloat frame_rate;
     gfloat max_frame_rate;
     guint8 *dummy_data;
+    guint current_frame;
 
     gboolean thread_running;
 
@@ -78,6 +79,94 @@ struct _UcaMockCameraPrivate {
     GValueArray *binnings;
 };
 
+static const char g_digits[10][20] = {
+    /* 0 */
+    { 0x00, 0xff, 0xff, 0x00,
+      0xff, 0x00, 0x00, 0xff,
+      0xff, 0x00, 0x00, 0xff,
+      0xff, 0x00, 0x00, 0xff,
+      0x00, 0xff, 0xff, 0x00 },
+    /* 1 */
+    { 0x00, 0x00, 0xff, 0x00,
+      0x00, 0xff, 0xff, 0x00,
+      0x00, 0x00, 0xff, 0x00,
+      0x00, 0x00, 0xff, 0x00,
+      0x00, 0x00, 0xff, 0x00 },
+    /* 2 */
+    { 0x00, 0xff, 0xff, 0x00,
+      0xff, 0x00, 0x00, 0xff,
+      0x00, 0x00, 0xff, 0x00,
+      0x00, 0xff, 0x00, 0x00,
+      0xff, 0xff, 0xff, 0xff },
+    /* 3 */
+    { 0x00, 0xff, 0xff, 0x00,
+      0xff, 0x00, 0x00, 0xff,
+      0x00, 0x00, 0xff, 0x00,
+      0xff, 0x00, 0x00, 0xff,
+      0x00, 0xff, 0xff, 0x00 },
+    /* 4 */
+    { 0xff, 0x00, 0x00, 0x00,
+      0xff, 0x00, 0x00, 0xff,
+      0xff, 0xff, 0xff, 0xff,
+      0x00, 0x00, 0x00, 0xff,
+      0x00, 0x00, 0x00, 0xff },
+    /* 5 */
+    { 0xff, 0xff, 0xff, 0xff,
+      0xff, 0x00, 0x00, 0x00,
+      0x00, 0xff, 0xff, 0x00,
+      0x00, 0x00, 0x00, 0xff,
+      0xff, 0xff, 0xff, 0x00 },
+    /* 6 */
+    { 0x00, 0xff, 0xff, 0xff,
+      0xff, 0x00, 0x00, 0x00,
+      0xff, 0xff, 0xff, 0x00,
+      0xff, 0x00, 0x00, 0xff,
+      0x00, 0xff, 0xff, 0x00 },
+    /* 7 */
+    { 0xff, 0xff, 0xff, 0xff,
+      0x00, 0x00, 0x00, 0xff,
+      0x00, 0x00, 0xff, 0x00,
+      0x00, 0xff, 0x00, 0x00,
+      0xff, 0x00, 0x00, 0x00 },
+    /* 8 */
+    { 0x00, 0xff, 0xff, 0x00,
+      0xff, 0x00, 0x00, 0xff,
+      0x00, 0xff, 0xff, 0x00,
+      0xff, 0x00, 0x00, 0xff,
+      0x00, 0xff, 0xff, 0x00 },
+    /* 9 */
+    { 0x00, 0xff, 0xff, 0x00,
+      0xff, 0x00, 0x00, 0xff,
+      0x00, 0xff, 0xff, 0xff,
+      0x00, 0x00, 0x00, 0xff,
+      0xff, 0xff, 0xff, 0x00 }
+};
+
+const guint DIGIT_WIDTH = 4;
+const guint DIGIT_HEIGHT = 5;
+
+static void 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];
+        }
+    }
+}
+
+static void print_current_frame(UcaMockCameraPrivate *priv, gchar *buffer)
+{
+    guint number = priv->current_frame;
+    guint divisor = 100000000;
+    int x = 10;
+    while (divisor > 1) {
+        print_number(buffer, number / divisor, x, 10, priv->width);
+        number = number % divisor;
+        divisor = divisor / 10;
+        x += DIGIT_WIDTH + 1;
+    }
+}
+
 /**
  * uca_mock_camera_new:
  * @error: Location for error
@@ -163,6 +252,8 @@ static void uca_mock_camera_grab(UcaCamera *camera, gpointer *data, GError **err
         *data = g_malloc0(priv->width * priv->height);
 
     g_memmove(*data, priv->dummy_data, priv->width * priv->height);
+    print_current_frame(priv, *data);
+    priv->current_frame++;
 }
 
 static void uca_mock_camera_set_property(GObject *object, guint property_id, const GValue *value, GParamSpec *pspec)
@@ -290,6 +381,7 @@ static void uca_mock_camera_init(UcaMockCamera *self)
     self->priv->frame_rate = self->priv->max_frame_rate = 100000.0f;
     self->priv->dummy_data = (guint8 *) g_malloc0(self->priv->width * self->priv->height);
     self->priv->grab_thread = NULL;
+    self->priv->current_frame = 0;
 
     self->priv->binnings = g_value_array_new(1);
     GValue val = {0};
-- 
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