diff options
| -rw-r--r-- | plugins/mock/uca-mock-camera.c | 53 |
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 |