d/p/lib-Add-accessor-for-minutia-coordinates.patch: Add a way to access minutia coordinates, this will help to fix ftbfs in fprint_demo

In reality a API breakage was introduced in a previous version and even
if it's not fixing it completely it reintroduce the same
functionalities.

debian/libfprint0.symbols

@@ -58,6 +58,7 @@ libfprint.so.0 libfprint0 #MINVER#
  fp_img_save_to_file@Base 1:0.4.0
  fp_img_standardize@Base 1:0.4.0
  fp_init@Base 1:0.4.0
+ fp_minutia_get_coords@Base 1:0.8.2-3~
  fp_print_data_delete@Base 1:0.4.0
  fp_print_data_free@Base 1:0.4.0
  fp_print_data_from_data@Base 1:0.4.0

debian/patches/lib-Add-accessor-for-minutia-coordinates.patch

@@ -0,0 +1,75 @@
+From: Bastien Nocera <hadess@hadess.net>
+Date: Mon, 8 Oct 2018 16:43:28 +0200
+Subject: lib: Add accessor for minutia coordinates
+
+Add fp_minutia_get_coords() so that debugging applications can show the
+detected minutiae along with the captured image.
+
+This will also help fix the positively ancient fprint_demo.
+
+See https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=907470
+---
+ doc/libfprint-sections.txt |  1 +
+ libfprint/fprint.h         |  1 +
+ libfprint/img.c            | 24 ++++++++++++++++++++++++
+ 3 files changed, 26 insertions(+)
+
+diff --git a/doc/libfprint-sections.txt b/doc/libfprint-sections.txt
+index 77cb0c3..67616cc 100644
+--- a/doc/libfprint-sections.txt
++++ b/doc/libfprint-sections.txt
+@@ -129,6 +129,7 @@ fp_img_save_to_file
+ fp_img_standardize
+ fp_img_binarize
+ fp_img_get_minutiae
++fp_minutia_get_coords
+ </SECTION>
+ 
+ <SECTION>
+diff --git a/libfprint/fprint.h b/libfprint/fprint.h
+index be94a54..0efd875 100644
+--- a/libfprint/fprint.h
++++ b/libfprint/fprint.h
+@@ -295,6 +295,7 @@ int fp_img_save_to_file(struct fp_img *img, char *path);
+ void fp_img_standardize(struct fp_img *img);
+ struct fp_img *fp_img_binarize(struct fp_img *img);
+ struct fp_minutia **fp_img_get_minutiae(struct fp_img *img, int *nr_minutiae);
++int fp_minutia_get_coords(struct fp_minutia *minutia, int *coord_x, int *coord_y);
+ void fp_img_free(struct fp_img *img);
+ 
+ /* Polling and timing */
+diff --git a/libfprint/img.c b/libfprint/img.c
+index 2f195af..4b2476f 100644
+--- a/libfprint/img.c
++++ b/libfprint/img.c
+@@ -561,6 +561,30 @@ fpi_imgdev_get_dev(struct fp_img_dev *imgdev)
+ 	return imgdev->dev;
+ }
+ 
++/**
++ * fp_minutia_get_coords:
++ * @minutia: a struct #fp_minutia
++ * @x: the return variable for the X coordinate of the minutia
++ * @y: the return variable for the Y coordinate of the minutia
++ *
++ * Sets @x and @y to be the coordinates of the detected minutia, so it
++ * can be presented in a more verbose user interface. This is usually only
++ * used for debugging purposes.
++ *
++ * Returns: 0 on success, -1 on error.
++ */
++API_EXPORTED int fp_minutia_get_coords(struct fp_minutia *minutia, int *coord_x, int *coord_y)
++{
++	g_return_val_if_fail (minutia != NULL, -1);
++	g_return_val_if_fail (coord_x != NULL, -1);
++	g_return_val_if_fail (coord_y != NULL, -1);
++
++	*coord_x = minutia->x;
++	*coord_y = minutia->y;
++
++	return 0;
++}
++
+ enum fp_imgdev_enroll_state
+ fpi_imgdev_get_action_state(struct fp_img_dev *imgdev)
+ {

debian/patches/series

@@ -1,5 +1,6 @@
 # Upstream backports
 fix_ftbfs_meson.patch
+lib-Add-accessor-for-minutia-coordinates.patch
 
 # Debian specifics
 kFreeBSD_FTBFS_add_ETIME_definition.patch