diff options
Diffstat (limited to 'roi.c')
| -rw-r--r-- | roi.c | 36 |
1 files changed, 18 insertions, 18 deletions
@@ -33,16 +33,24 @@ calc_rubberband_rect(struct roi *roi, *height = ABS(roi->rubberband.y1 - roi->rubberband.y2); } +static inline void +pixbuf_get(GdkPixbuf *pixbuf, guchar **pixels, + gint *width, gint *height, gint *nch, gint *stride) +{ + if (pixels) *pixels = gdk_pixbuf_get_pixels(pixbuf); + if (width) *width = gdk_pixbuf_get_width(pixbuf); + if (height) *height = gdk_pixbuf_get_height(pixbuf); + if (nch) *nch = gdk_pixbuf_get_n_channels(pixbuf); + if (stride) *stride = gdk_pixbuf_get_rowstride(pixbuf); +} + static gboolean do_roi(struct roi *roi) { GdkPixbuf *match; cairo_rectangle_t area; - gint x, y, i; - gint width, height; - gint stride, nch; + gint i, s, x, y, width, height, nch, stride; guchar *pix, *row; - gint s; gint middle[3] = { 0, 0, 0 }; gint sigma[3] = { 0, 0, 0 }; struct match_interval { gint min, max; } interval[3]; @@ -54,12 +62,10 @@ do_roi(struct roi *roi) match = gdk_pixbuf_new_subpixbuf(roi->input, area.x, area.y, area.width, area.height); - nch = gdk_pixbuf_get_n_channels(match); - stride = gdk_pixbuf_get_rowstride(match); s = area.width * area.height; - for (y = 0, row = gdk_pixbuf_get_pixels(match); - y < area.height; ++y, row += stride) { + pixbuf_get(match, &row, NULL, NULL, &nch, &stride); + for (y = 0; y < area.height; ++y, row += stride) { for (x = 0, pix = row; x < area.width; ++x, pix += nch) { for (i = 0; i < 3; ++i) middle[i] += pix[i]; @@ -68,8 +74,8 @@ do_roi(struct roi *roi) for (i = 0; i < 3; ++i) middle[i] /= s; - for (y = 0, row = gdk_pixbuf_get_pixels(match); - y < area.height; ++y, row += stride) { + pixbuf_get(match, &row, NULL, NULL, NULL, NULL); + for (y = 0; y < area.height; ++y, row += stride) { for (x = 0, pix = row; x < area.width; ++x, pix += nch) { for (i = 0; i < 3; ++i) sigma[i] += @@ -77,7 +83,6 @@ do_roi(struct roi *roi) (pix[i] - middle[i]); } } - for (i = 0; i < 3; ++i) sigma[i] = sqrt(sigma[i] / (s - 1)); @@ -91,17 +96,12 @@ do_roi(struct roi *roi) i, interval[i].min, interval[i].max); } - nch = gdk_pixbuf_get_n_channels(roi->input); - stride = gdk_pixbuf_get_rowstride(roi->input); - width = gdk_pixbuf_get_width(roi->input); - height = gdk_pixbuf_get_height(roi->input); - if (roi->modified_input) g_object_unref(roi->modified_input); roi->modified_input = gdk_pixbuf_copy(roi->input); - for (y = 0, row = gdk_pixbuf_get_pixels(roi->modified_input); - y < height; ++y, row += stride) { + pixbuf_get(roi->modified_input, &row, &width, &height, &nch, &stride); + for (y = 0; y < height; ++y, row += stride) { for (x = 0, pix = row; x < width; ++x, pix += nch) { int H = 1; for (i = 0; i < 3; ++i) { |