From 9b8a30f0b7fe76330e1a40190c9a5a64cc08eba6 Mon Sep 17 00:00:00 2001
From: tth <sigfood@dinorama.fr>
Date: Sat, 7 Mar 2020 15:24:31 +0100
Subject: [PATCH] sauvageonnes

---
 .gitignore                |  1 +
 doc/the_floatimg_hack.tex |  8 ++++--
 v4l2/Makefile             |  7 +++--
 v4l2/funcs.c              |  4 +++
 v4l2/nc-camcontrol.c      | 55 +++++++++++++++++++++++++++++++++++++++
 5 files changed, 71 insertions(+), 4 deletions(-)
 create mode 100644 v4l2/nc-camcontrol.c

diff --git a/.gitignore b/.gitignore
index 0aab3cf..3443c8c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -39,6 +39,7 @@ v4l2/grabvidseq
 v4l2/*.o
 v4l2/*.ppm
 v4l2/video-infos
+v4l2/nc-camcontrol
 
 tools/fimg2png
 tools/fimg2pnm
diff --git a/doc/the_floatimg_hack.tex b/doc/the_floatimg_hack.tex
index 550c083..07fd34d 100644
--- a/doc/the_floatimg_hack.tex
+++ b/doc/the_floatimg_hack.tex
@@ -424,7 +424,7 @@ semblent cohérents avec la notion d'image flottante.
 Certains d'entre eux, les plus simples, sont disponibles.
 Les autres sont à imaginer.
 
-\begin{figure}
+\begin{figure}[h]
 \input{cos01.tex}				% XXX XXX XXX 
 \caption{Correcteur cos01}
 \end{figure}
@@ -449,7 +449,7 @@ de contraste, il y a quelques explication en page \pageref{exemplefunc}.
 
 
 
-\begin{figure}
+\begin{figure}[h]
 \input{cos010.tex}				% XXX XXX XXX 
 \caption{Correcteur cos010}
 \end{figure}
@@ -1160,6 +1160,10 @@ l'\textsc{api} de \textsc{v4l2}, et donc, que ce que raconte
 ce logiciel doit être pris avec des pincettes. En particulier
 la liste des résolutions disponibles.
 
+\subsection{nc-camcontrol}
+
+Ajustement \textsl{Brightness Contrast Saturation Hue\dots}
+
 % -------------------------------------------------------------------
 \section{À l'extérieur}
 
diff --git a/v4l2/Makefile b/v4l2/Makefile
index a1e7bec..587d0cf 100644
--- a/v4l2/Makefile
+++ b/v4l2/Makefile
@@ -2,8 +2,9 @@
 
 COPT = -Wall -fpic -g -no-pie -DDEBUG_LEVEL=0
 DEPS = ../floatimg.h  ../libfloatimg.a Makefile
+LOBJ = funcs.o v4l2_pr_structs.o
 
-all:	grabvidseq t video-infos
+all:	grabvidseq t video-infos nc-camcontrol
 
 t:	t.c Makefile ${DEPS} funcs.o v4l2_pr_structs.o
 	gcc ${COPT} $< funcs.o v4l2_pr_structs.o ../libfloatimg.a -o $@
@@ -21,8 +22,10 @@ grabvidseq: grabvidseq.c ${DEPS} rgb2fimg.o
 	gcc ${COPT} $<  rgb2fimg.o ../libfloatimg.a -lpnglite -lz -lm -lv4l2 -o $@
 
 video-infos: video-infos.c Makefile funcs.o v4l2_pr_structs.o
-	gcc -Wall -g $<  funcs.o v4l2_pr_structs.o ../libfloatimg.a -o $@
+	gcc -Wall -g $<  ${LOBJ} ../libfloatimg.a -o $@
 
+nc-camcontrol: nc-camcontrol.c Makefile funcs.o v4l2_pr_structs.o
+	gcc -Wall -g $<  ${LOBJ} ../libfloatimg.a -o $@
 
 #		---------------
 #		external things
diff --git a/v4l2/funcs.c b/v4l2/funcs.c
index d90b4c2..efc4cbb 100644
--- a/v4l2/funcs.c
+++ b/v4l2/funcs.c
@@ -88,6 +88,10 @@ if (-1 == fd) {
 
 dev_name = strdup(device);		/* XXX */
 
+if (verbosity) {
+	fprintf(stderr, "device '%s' opened as #%d\n", device, fd);
+	}
+
 return fd;
 }
 /* --------------------------------------------------------------------- */
diff --git a/v4l2/nc-camcontrol.c b/v4l2/nc-camcontrol.c
new file mode 100644
index 0000000..cc5c8a2
--- /dev/null
+++ b/v4l2/nc-camcontrol.c
@@ -0,0 +1,55 @@
+/*
+ *		tests pour capturer les webcams
+ */
+
+#include  <stdio.h>
+#include  <stdlib.h>
+#include  <unistd.h>
+#include  <math.h>
+#include  <string.h>
+#include  <sys/ioctl.h>
+#include  <errno.h>
+#include  <inttypes.h>
+#include  <linux/videodev2.h>
+
+#include  "../floatimg.h"
+
+#include  "v4l2_pr_structs.h"
+#include  "funcs.h"
+
+int		verbosity;
+
+/* --------------------------------------------------------------------- */
+void help(int n)
+{
+
+puts("camera controls");
+puts("\t-d bla\t\tselect video device");
+
+exit(0);
+}
+/* --------------------------------------------------------------------- */
+int main(int argc, char *argv[])
+{
+int		foo, opt;
+int		etype = 0;
+char		*device = "/dev/video0";
+char		*title = NULL;
+int		K = 0;
+
+while ((opt = getopt(argc, argv, "d:e:hK:lT:v")) != -1) {
+	switch(opt) {
+		case 'd':	device = optarg;	break;
+		case 'e':	etype = atol(optarg);	break;
+		case 'h':	help(0);		break;
+		case 'K':	K = atol(optarg);	break;
+		// case 'l':	liste_des_devices(0);	break;
+		case 'v':	verbosity++;		break;
+		}
+	}
+
+
+
+return 0;
+}
+/* --------------------------------------------------------------------- */