Add v4l2-ctl test tool.

From: Hans Verkuil <hverkuil@xs4all.nl>

v4l2-ctl can be used to query and set most v4l2 ioctls.
Very useful while testing.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>

2 files changed, 1251 insertions, 1 deletions

diff --git a/test/Makefile b/test/Makefile
index 8623e4d98..79e90417b 100644
--- a/test/Makefile
+++ b/test/Makefile
@@ -1,7 +1,8 @@
-FILES   = ioctl-test sliced-vbi-test sliced-vbi-detect vbi-test
+FILES   = ioctl-test sliced-vbi-test sliced-vbi-detect vbi-test v4l2-ctl
 CC      = gcc
 LIBS    =
 CFLAGS  = -O3 -Wall -fomit-frame-pointer -funroll-loops -g -I ../linux/include
+CXXFLAGS = $(CFLAGS)
 LDFLAGS =
 
 all: $(FILES)
diff --git a/test/v4l2-ctl.cpp b/test/v4l2-ctl.cpp
new file mode 100644
index 000000000..ade779546
--- /dev/null
+++ b/test/v4l2-ctl.cpp
@@ -0,0 +1,1249 @@
+/*
+    Copyright (C) 2003-2004  Kevin Thayer <nufan_wfk at yahoo dot com>
+
+    Cleanup and VBI and audio in/out options:
+    Copyright (C) 2004  Hans Verkuil <hverkuil@xs4all.nl>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <unistd.h>
+#include <features.h>		/* Uses _GNU_SOURCE to define getsubopt in stdlib.h */
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <inttypes.h>
+#include <getopt.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <ctype.h>
+#include <errno.h>
+#include <sys/ioctl.h>
+#include <sys/time.h>
+#include <math.h>
+#include <sys/klog.h>
+
+#define __user
+#include <linux/videodev2.h>
+
+#include <list>
+#include <vector>
+#include <map>
+#include <string>
+
+/* Short option list
+
+   Please keep in alphabetical order.
+   That makes it easier to see which short options are still free.
+
+   In general the lower case is used to set something and the upper
+   case is used to retrieve a setting. */
+enum Option {
+	OptGetAudioInput = 'A',
+	OptSetAudioInput = 'a',
+	OptGetAudioOutput = 'B',
+	OptSetAudioOutput = 'b',
+	OptGetCtrl = 'C',
+	OptSetCtrl = 'c',
+	OptSetDevice = 'd',
+	OptGetDriverInfo = 'D',
+	OptGetFreq = 'F',
+	OptSetFreq = 'f',
+	OptHelp = 'h',
+	OptGetInput = 'I',
+	OptSetInput = 'i',
+	OptListCtrls = 'l',
+	OptListCtrlsMenus = 'L',
+	OptListOutputs = 'N',
+	OptListInputs = 'n',
+	OptGetOutput = 'O',
+	OptSetOutput = 'o',
+	OptListAudioOutputs = 'Q',
+	OptListAudioInputs = 'q',
+	OptGetStandard = 'S',
+	OptSetStandard = 's',
+	OptGetTuner = 'T',
+	OptSetTuner = 't',
+	OptGetVideoFormat = 'V',
+	OptSetVideoFormat = 'v',
+	OptLast = 128
+};
+
+static char options[OptLast];
+static int option_all = 0;
+static int option_streamoff = 0;
+static int option_streamon = 0;
+static int option_list_stds = 0;
+static int option_version = 0;
+static int option_log_status = 0;
+static int option_verbose = 0;
+
+typedef std::vector<struct v4l2_ext_control> ctrl_list;
+static ctrl_list user_ctrls;
+static ctrl_list mpeg_ctrls;
+
+typedef std::map<std::string, unsigned> ctrl_strmap;
+static ctrl_strmap ctrl_str2id;
+typedef std::map<unsigned, std::string> ctrl_idmap;
+static ctrl_idmap ctrl_id2str;
+
+typedef std::list<std::string> ctrl_get_list;
+static ctrl_get_list get_ctrls;
+
+typedef std::map<std::string,std::string> ctrl_set_map;
+static ctrl_set_map set_ctrls;
+
+/* fmts specified */
+#define FMTWidth		(1L<<0)
+#define FMTHeight		(1L<<1)
+
+static struct option long_options[] = {
+	{"list-audio-inputs", no_argument, 0, OptListAudioInputs},
+	{"list-audio-outputs", no_argument, 0, OptListAudioOutputs},
+	{"all", no_argument, &option_all, 1},
+	{"device", required_argument, 0, OptSetDevice},
+	{"get-format", no_argument, 0, OptGetVideoFormat},
+	{"set-format", required_argument, 0, OptSetVideoFormat},
+	{"help", no_argument, 0, OptHelp},
+	{"get-output", no_argument, 0, OptGetOutput},
+	{"set-output", required_argument, 0, OptSetOutput},
+	{"list-outputs", no_argument, 0, OptListOutputs},
+	{"list-inputs", no_argument, 0, OptListInputs},
+	{"get-input", no_argument, 0, OptGetInput},
+	{"set-input", required_argument, 0, OptSetInput},
+	{"get-audio-input", no_argument, 0, OptGetAudioInput},
+	{"set-audio-input", required_argument, 0, OptSetAudioInput},
+	{"get-audio-output", no_argument, 0, OptGetAudioOutput},
+	{"set-audio-output", required_argument, 0, OptSetAudioOutput},
+	{"get-freq", no_argument, 0, OptGetFreq},
+	{"set-freq", required_argument, 0, OptSetFreq},
+	{"streamoff", no_argument, &option_streamoff, 1},
+	{"streamon", no_argument, &option_streamon, 1},
+	{"list-standards", no_argument, &option_list_stds, 1},
+	{"get-standard", no_argument, 0, OptGetStandard},
+	{"set-standard", required_argument, 0, OptSetStandard},
+	{"info", no_argument, 0, OptGetDriverInfo},
+	{"list-ctrls", no_argument, 0, OptListCtrls},
+	{"list-ctrls-menus", no_argument, 0, OptListCtrlsMenus},
+	{"set-ctrl", required_argument, 0, OptSetCtrl},
+	{"get-ctrl", required_argument, 0, OptGetCtrl},
+	{"get-tuner", no_argument, 0, OptGetTuner},
+	{"set-tuner", required_argument, 0, OptSetTuner},
+	{"version", no_argument, &option_version, 1},
+	{"verbose", no_argument, &option_verbose, 1},
+	{"log-status", no_argument, &option_log_status, 1},
+	{0, 0, 0, 0}
+};
+
+void usage(void)
+{
+	printf("Usage:\n");
+	printf("  --all              display all information available\n");
+	printf("  -A, --get-audio-input\n");
+	printf("                     query the current audio input [VIDIOC_G_AUDIO]\n");
+	printf("  -a, --set-audio-input=<num>\n");
+	printf("                     set the current audio input to <num> [VIDIOC_S_AUDIO]\n");
+	printf("  -B, --get-audio-output\n");
+	printf("                     query the current audio output [VIDIOC_G_AUDOUT]\n");
+	printf("  -b, --set-audio-output=<num>\n");
+	printf("                     set the current audio output to <num> [VIDIOC_S_AUDOUT]\n");
+	printf("  -C, --get-ctrl=<ctrl>[,<ctrl>...]\n");
+	printf("                     get the value of the controls [VIDIOC_G_EXT_CTRLS]\n");
+	printf("  -c, --set-ctrl=<ctrl>=<val>[,<ctrl>=<val>...]\n");
+	printf("                     set the controls to the values specified [VIDIOC_S_EXT_CTRLS]\n");
+	printf("  -D, --info         show driver info [VIDIOC_QUERYCAP]\n");
+	printf("  -d, --device=<dev> use device <dev> instead of /dev/video0 [VIDIOC_S_EXT_CTRLS]\n");
+	printf("                     if <dev> is a single digit, then /dev/video<dev> is used\n");
+	printf("  -F, --get-freq     query the current frequency [VIDIOC_G_FREQUENCY]\n");
+	printf("  -f, --set-freq=<freq>\n");
+	printf("                     set the current frequency to <freq> MHz [VIDIOC_S_FREQUENCY]\n");
+	printf("  -h, --help         display this help message\n");
+	printf("  -I, --get-input    query the current video input [VIDIOC_G_INPUT]\n");
+	printf("  -i, --set-input=<num>\n");
+	printf("                     set the current video input to <num> [VIDIOC_S_INPUT]\n");
+	printf("  -l, --list-ctrls   display all controls and their values [VIDIOC_QUERYCTRL]\n");
+	printf("  -L, --list-ctrls-menus\n");
+	printf("		     display all controls, their values and the menus [VIDIOC_QUERYMENU]\n");
+	printf("  -N, --list-outputs display video outputs [VIDIOC_ENUMOUTPUT]\n");
+	printf("  -n, --list-inputs  display video inputs [VIDIOC_ENUMINPUT]\n");
+	printf("  -O, --get-output   query the current video output [VIDIOC_G_OUTPUT]\n");
+	printf("  -o, --set-output=<num>\n");
+	printf("                     set the current video output to <num> [VIDIOC_S_OUTPUT]\n");
+	printf("  -Q, --list-audio-outputs\n");
+	printf("                     display audio outputs [VIDIOC_ENUMAUDOUT]\n");
+	printf("  -q, --list-audio-inputs\n");
+	printf("                     display audio inputs [VIDIOC_ENUMAUDIO]\n");
+	printf("  -S, --get-standard\n");
+	printf("                     query the current video standard [VIDIOC_G_STD]\n");
+	printf("  -s, --set-standard=<num>\n");
+	printf("                     set the current video standard to <num> [VIDIOC_S_STD]\n");
+	printf("                     <num> can be a numerical v4l2_std value, or it can be one of:\n");
+	printf("                     pal-X (X = B/G/H/N/Nc/I/D/K/M) or just 'pal' (V4L2_STD_PAL)\n");
+	printf("                     ntsc-X (X = M/J/K) or just 'ntsc' (V4L2_STD_NTSC)\n");
+	printf("                     secam-X (X = B/G/H/D/K/L/Lc) or just 'secam' (V4L2_STD_SECAM)\n");
+	printf("  --list-standards   display supported video standards [VIDIOC_ENUMSTD]\n");
+	printf("  -T, --get-tuner    query the current tuner settings [VIDIOC_G_TUNER]\n");
+	printf("  -t, --set-tuner=<mode>\n");
+	printf("                     set the audio mode of the tuner [VIDIOC_S_TUNER]\n");
+	printf("  -V, --get-format   query the current data format [VIDIOC_G_FMT]\n");
+	printf("  -v, --set-format=width=<x>,height=<y>\n");
+	printf("                     set the current data format [VIDIOC_S_FMT]\n");
+	printf("                     Possible values: 0 (mono), 1 (stereo), 2 (lang2), 3 (lang1), 4 (both)\n");
+	printf("  --verbose          turn on verbose ioctl error reporting.\n");
+	printf("  --version          shows the version number of this utility.\n");
+	printf("\n");
+	printf("Expert options:\n");
+	printf("  --streamoff        turn the stream off [VIDIOC_STREAMOFF]\n");
+	printf("  --streamon         turn the stream on [VIDIOC_STREAMOFF]\n");
+	printf("  --log-status       log the board status in the kernel log [VIDIOC_LOG_STATUS]\n");
+	exit(0);
+}
+
+
+static std::string name2var(unsigned char *name)
+{
+	std::string s;
+
+	while (*name) {
+		if (*name == ' ') s += "_";
+		else s += std::string(1, tolower(*name));
+		name++;
+	}
+	return s;
+}
+
+static void print_qctrl(int fd, struct v4l2_queryctrl *queryctrl,
+	       	struct v4l2_ext_control *ctrl, int show_menus)
+{
+	struct v4l2_querymenu qmenu = { 0 };
+	std::string s = name2var(queryctrl->name);
+	int i;
+
+	qmenu.id = queryctrl->id;
+	switch (queryctrl->type) {
+	case V4L2_CTRL_TYPE_INTEGER:
+		printf("%31s (int)  : min=%d max=%d step=%d default=%d value=%d",
+				s.c_str(),
+				queryctrl->minimum, queryctrl->maximum,
+				queryctrl->step, queryctrl->default_value,
+				ctrl->value);
+		break;
+	case V4L2_CTRL_TYPE_INTEGER64:
+		printf("%31s (int64): value=%lld", queryctrl->name, ctrl->value64);
+		break;
+	case V4L2_CTRL_TYPE_BOOLEAN:
+		printf("%31s (bool) : default=%d value=%d",
+				s.c_str(),
+			       	queryctrl->default_value, ctrl->value);
+		break;
+	case V4L2_CTRL_TYPE_MENU:
+		printf("%31s (menu) : min=%d max=%d default=%d value=%d", 
+				s.c_str(),
+				queryctrl->minimum, queryctrl->maximum,
+				queryctrl->default_value, ctrl->value);
+		break;
+	case V4L2_CTRL_TYPE_BUTTON:
+		printf("%31s (button)\n", s.c_str());
+		break;
+	default: break;
+	}
+	if (queryctrl->flags) {
+		printf(" flags=");
+		if (queryctrl->flags & V4L2_CTRL_FLAG_GRABBED)
+			printf("grabbed ");
+		if (queryctrl->flags & V4L2_CTRL_FLAG_READ_ONLY)
+			printf("readonly ");
+		if (queryctrl->flags & V4L2_CTRL_FLAG_UPDATE)
+			printf("update ");
+		if (queryctrl->flags & V4L2_CTRL_FLAG_INACTIVE)
+			printf("inactive ");
+		if (queryctrl->flags & V4L2_CTRL_FLAG_SLIDER)
+			printf("slider ");
+	}
+	printf("\n");
+	if (queryctrl->type == V4L2_CTRL_TYPE_MENU && show_menus) {
+		for (i = 0; i <= queryctrl->maximum; i++) {
+			qmenu.index = i;
+			if (ioctl(fd, VIDIOC_QUERYMENU, &qmenu))
+				continue;
+			printf("\t\t\t\t%d: %s\n", i, qmenu.name);
+		}
+	}
+}
+
+static int print_control(int fd, struct v4l2_queryctrl &qctrl, int show_menus)
+{
+	struct v4l2_control ctrl = { 0 };
+	struct v4l2_ext_control ext_ctrl = { 0 };
+	struct v4l2_ext_controls ctrls = { 0 };
+
+	if (qctrl.flags & V4L2_CTRL_FLAG_DISABLED)
+		return 1;
+	if (qctrl.type == V4L2_CTRL_TYPE_CTRL_CLASS) {
+		printf("\n%s\n\n", qctrl.name);
+		return 1;
+	}
+	ext_ctrl.id = qctrl.id;
+	ctrls.ctrl_class = V4L2_CTRL_ID2CLASS(qctrl.id);
+	ctrls.count = 1;
+	ctrls.controls = &ext_ctrl;
+	if (V4L2_CTRL_ID2CLASS(qctrl.id) != V4L2_CTRL_CLASS_USER &&
+	    qctrl.id < V4L2_CID_PRIVATE_BASE) {
+		if (ioctl(fd, VIDIOC_G_EXT_CTRLS, &ctrls)) {
+			printf("error %d getting ext_ctrl %s\n",
+					errno, qctrl.name);
+			return 0;
+		}
+	}
+	else {
+		ctrl.id = qctrl.id;
+		if (ioctl(fd, VIDIOC_G_CTRL, &ctrl)) {
+			printf("error %d getting ctrl %s\n",
+					errno, qctrl.name);
+			return 0;
+		}
+		ext_ctrl.value = ctrl.value;
+	}
+	print_qctrl(fd, &qctrl, &ext_ctrl, show_menus);
+	return 1;
+}
+
+static void list_controls(int fd, int show_menus)
+{
+	struct v4l2_queryctrl qctrl = { V4L2_CTRL_FLAG_NEXT_CTRL };
+	int id;
+
+	while (ioctl(fd, VIDIOC_QUERYCTRL, &qctrl) == 0) {
+			print_control(fd, qctrl, show_menus);
+		qctrl.id |= V4L2_CTRL_FLAG_NEXT_CTRL;
+	}
+	if (qctrl.id != V4L2_CTRL_FLAG_NEXT_CTRL)
+		return;
+	for (id = V4L2_CID_USER_BASE; id < V4L2_CID_LASTP1; id++) {
+		qctrl.id = id;
+		if (ioctl(fd, VIDIOC_QUERYCTRL, &qctrl) == 0)
+			print_control(fd, qctrl, show_menus);
+	}
+	for (qctrl.id = V4L2_CID_PRIVATE_BASE; 
+			ioctl(fd, VIDIOC_QUERYCTRL, &qctrl) == 0; qctrl.id++) {
+		print_control(fd, qctrl, show_menus);
+	}
+}
+
+static void find_controls(int fd)
+{
+	struct v4l2_queryctrl qctrl = { V4L2_CTRL_FLAG_NEXT_CTRL };
+	int id;
+
+	while (ioctl(fd, VIDIOC_QUERYCTRL, &qctrl) == 0) {
+		if (qctrl.type != V4L2_CTRL_TYPE_CTRL_CLASS) {
+                	ctrl_str2id[name2var(qctrl.name)] = qctrl.id;
+                	ctrl_id2str[qctrl.id] = name2var(qctrl.name);
+		}
+		qctrl.id |= V4L2_CTRL_FLAG_NEXT_CTRL;
+	}
+	if (qctrl.id != V4L2_CTRL_FLAG_NEXT_CTRL)
+		return;
+	for (id = V4L2_CID_USER_BASE; id < V4L2_CID_LASTP1; id++) {
+		qctrl.id = id;
+		if (ioctl(fd, VIDIOC_QUERYCTRL, &qctrl) == 0)
+                        ctrl_str2id[name2var(qctrl.name)] = qctrl.id;
+	}
+	for (qctrl.id = V4L2_CID_PRIVATE_BASE; 
+			ioctl(fd, VIDIOC_QUERYCTRL, &qctrl) == 0; qctrl.id++) {
+                ctrl_str2id[name2var(qctrl.name)] = qctrl.id;
+	}
+}
+
+int printfmt(struct v4l2_format vfmt)
+{
+	printf("Format:\n");
+
+	switch (vfmt.type) {
+	case 1:
+		printf("\tType   : Video Capture\n");
+		printf("\tWidth  : %d\n", vfmt.fmt.pix.width);
+		printf("\tHeight : %d\n", vfmt.fmt.pix.height);
+		break;
+	case 2:
+		printf("\tType   : Video Output\n");
+		break;
+	case 3:
+		printf("\tType   : Video Overlay\n");
+		break;
+	case 4:
+		printf("\tType   : VBI Capture\n");
+		break;
+	case 5:
+		printf("\tType   : VBI Output\n");
+		break;
+	case 0x80:
+		printf("\tType   : Private\n");
+		break;
+	default:
+		printf("\tType   : Unknown: %d\n", vfmt.type);
+		return -1;
+		break;
+	}
+	return 0;
+}
+
+char *pts_to_string(char *str, unsigned long pts)
+{
+	static char buf[256];
+	int hours, minutes, seconds, fracsec;
+	float fps;
+	int frame;
+	char *p = (str) ? str : buf;
+
+	static const int MPEG_CLOCK_FREQ = 90000;
+	seconds = pts / MPEG_CLOCK_FREQ;
+	fracsec = pts % MPEG_CLOCK_FREQ;
+
+	minutes = seconds / 60;
+	seconds = seconds % 60;
+
+	hours = minutes / 60;
+	minutes = minutes % 60;
+
+	fps = 30;
+	frame = (int)ceilf(((float)fracsec / (float)MPEG_CLOCK_FREQ) * fps);
+
+	snprintf(p, sizeof(buf), "%d:%02d:%02d:%d", hours, minutes, seconds,
+		 frame);
+	return p;
+}
+
+static const char *audmode2s(int audmode)
+{
+	switch (audmode) {
+		case V4L2_TUNER_MODE_STEREO: return "stereo";
+		case V4L2_TUNER_MODE_LANG1: return "lang1";
+		case V4L2_TUNER_MODE_LANG2: return "lang2";
+		case V4L2_TUNER_MODE_LANG1_LANG2: return "bilingual";
+		case V4L2_TUNER_MODE_MONO: return "mono";
+		default: return "unknown";
+	}
+}
+
+static std::string rxsubchans2s(int rxsubchans)
+{
+	std::string s;
+
+	if (rxsubchans & V4L2_TUNER_SUB_MONO)
+		s += "mono ";
+	if (rxsubchans & V4L2_TUNER_SUB_STEREO)
+		s += "stereo ";
+	if (rxsubchans & V4L2_TUNER_SUB_LANG1)
+		s += "lang1 ";
+	if (rxsubchans & V4L2_TUNER_SUB_LANG2)
+		s += "lang2 ";
+	return s;
+}
+
+static std::string tcap2s(unsigned cap)
+{
+	std::string s;
+
+	if (cap & V4L2_TUNER_CAP_LOW)
+		s += "62.5 Hz ";
+	else
+		s += "62.5 kHz ";
+	if (cap & V4L2_TUNER_CAP_NORM)
+		s += "multi-standard ";
+	if (cap & V4L2_TUNER_CAP_STEREO)
+		s += "stereo ";
+	if (cap & V4L2_TUNER_CAP_LANG1)
+		s += "lang1 ";
+	if (cap & V4L2_TUNER_CAP_LANG2)
+		s += "lang2 ";
+	return s;
+}
+
+static std::string cap2s(unsigned cap)
+{
+	std::string s;
+
+	if (cap & V4L2_CAP_VIDEO_CAPTURE)
+		s += "\t\tVideo Capture\n";
+	if (cap & V4L2_CAP_VIDEO_OUTPUT)
+		s += "\t\tVideo Output\n";
+	if (cap & V4L2_CAP_VIDEO_OVERLAY)
+		s += "\t\tVideo Overlay\n";
+	if (cap & V4L2_CAP_VBI_CAPTURE)
+		s += "\t\tVBI Capture\n";
+	if (cap & V4L2_CAP_VBI_OUTPUT)
+		s += "\t\tVBI Output\n";
+	if (cap & V4L2_CAP_SLICED_VBI_CAPTURE)
+		s += "\t\tSliced VBI Capture\n";
+	if (cap & V4L2_CAP_SLICED_VBI_OUTPUT)
+		s += "\t\tSliced VBI Output\n";
+	if (cap & V4L2_CAP_RDS_CAPTURE)
+		s += "\t\tRDS Capture\n";
+	if (cap & V4L2_CAP_TUNER)
+		s += "\t\tTuner\n";
+	if (cap & V4L2_CAP_AUDIO)
+		s += "\t\tAudio\n";
+	if (cap & V4L2_CAP_RADIO)
+		s += "\t\tRadio\n";
+	if (cap & V4L2_CAP_READWRITE)
+		s += "\t\tRead/Write\n";
+	if (cap & V4L2_CAP_ASYNCIO)
+		s += "\t\tAsync I/O\n";
+	if (cap & V4L2_CAP_STREAMING)
+		s += "\t\tStreaming\n";
+	return s;
+}
+
+static v4l2_std_id parse_pal(const char *pal)
+{
+	if (pal[0] == '-') {
+		switch (pal[1]) {
+			case 'b':
+			case 'B':
+			case 'g':
+			case 'G':
+				return V4L2_STD_PAL_BG;
+			case 'h':
+			case 'H':
+				return V4L2_STD_PAL_H;
+			case 'n':
+			case 'N':
+				if (pal[2] == 'c' || pal[2] == 'C')
+					return V4L2_STD_PAL_Nc;
+				return V4L2_STD_PAL_N;
+			case 'i':
+			case 'I':
+				return V4L2_STD_PAL_I;
+			case 'd':
+			case 'D':
+			case 'k':
+			case 'K':
+				return V4L2_STD_PAL_DK;
+			case 'M':
+			case 'm':
+				return V4L2_STD_PAL_M;
+			case '-':
+				break;
+		}
+	}
+	fprintf(stderr, "pal specifier not recognised\n");
+	return 0;
+}
+
+static v4l2_std_id parse_secam(const char *secam)
+{
+	if (secam[0] == '-') {
+		switch (secam[1]) {
+			case 'b':
+			case 'B':
+			case 'g':
+			case 'G':
+			case 'h':
+			case 'H':
+				return V4L2_STD_SECAM_B | V4L2_STD_SECAM_G | V4L2_STD_SECAM_H;
+			case 'd':
+			case 'D':
+			case 'k':
+			case 'K':
+				return V4L2_STD_SECAM_DK;
+			case 'l':
+			case 'L':
+				if (secam[2] == 'C' || secam[2] == 'c')
+					return V4L2_STD_SECAM_LC;
+				return V4L2_STD_SECAM_L;
+			case '-':
+				break;
+		}
+	}
+	fprintf(stderr, "secam specifier not recognised\n");
+	return 0;
+}
+
+static v4l2_std_id parse_ntsc(const char *ntsc)
+{
+	if (ntsc[0] == '-') {
+		switch (ntsc[1]) {
+			case 'm':
+			case 'M':
+				return V4L2_STD_NTSC_M;
+			case 'j':
+			case 'J':
+				return V4L2_STD_NTSC_M_JP;
+			case 'k':
+			case 'K':
+				return V4L2_STD_NTSC_M_KR;
+			case '-':
+				break;
+		}
+	}
+	fprintf(stderr, "ntsc specifier not recognised\n");
+	return 0;
+}
+
+static int doioctl(int fd, int request, void *parm, const char *name)
+{
+	int retVal;
+
+	if (!option_verbose) return ioctl(fd, request, parm);
+	retVal = ioctl(fd, request, parm);
+	if (retVal < 0)
+		printf("failed: %s\n", strerror(errno));
+	else
+		printf("ok\n");
+	
+	return retVal;
+}
+
+static int parse_subopt(char **subs, char * const *subopts, char **value)
+{
+	int opt = getsubopt(subs, subopts, value);
+
+	if (opt == -1) {
+		fprintf(stderr, "Invalid suboptions specified\n");
+		usage();
+		exit(1);
+	}
+	if (value == NULL) {
+		fprintf(stderr, "No value given to suboption <%s>\n",
+				subopts[opt]);
+		usage();
+		exit(1);
+	}
+	return opt;
+}
+
+static void parse_next_subopt(char **subs, char **value)
+{
+        static char *const subopts[] = {
+            NULL
+        };
+        int opt = getsubopt(subs, subopts, value);
+
+	if (value == NULL) {
+		fprintf(stderr, "No value given to suboption <%s>\n",
+				subopts[opt]);
+		usage();
+		exit(1);
+	}
+}
+
+int main(int argc, char **argv)
+{
+	char *value, *subs;
+	int i;
+
+	int fd = -1;
+
+	/* bitfield for fmts */
+	unsigned int set_fmts = 0;
+
+	int mode = V4L2_TUNER_MODE_STEREO;	/* set audio mode */
+
+	/* command args */
+	char ch, *device = strdup("/dev/video0");	/* -d device */
+	struct v4l2_format vfmt;	/* set_format/get_format */
+	struct v4l2_tuner tuner;	/* set_tuner/get_tuner */
+	struct v4l2_capability vcap;	/* list_cap */
+	struct v4l2_input vin;		/* list_inputs */
+	struct v4l2_output vout;	/* list_outputs */
+	struct v4l2_audio vaudio;	/* list audio inputs */
+	struct v4l2_audioout vaudout = { 0 }; /* audio outputs */
+	int input;			/* set_input/get_input */
+	int output;			/* set_output/get_output */
+	v4l2_std_id std;		/* get_std/set_std */
+	double freq = 0;		/* get/set frequency */
+	struct v4l2_frequency vf;	/* get_freq/set_freq */
+	struct v4l2_standard vs;	/* list_std */
+	char short_options[26 * 2 * 2 + 1];
+	int idx = 0;
+
+	if (argc == 1) {
+		usage();
+		return 0;
+	}
+	for (i = 0; long_options[i].name; i++) {
+		if (!isalpha(long_options[i].val))
+			continue;
+		short_options[idx++] = long_options[i].val;
+		if (long_options[i].has_arg == required_argument)
+			short_options[idx++] = ':';
+	}
+	while (1) {
+		int option_index = 0;
+
+		short_options[idx] = 0;
+		ch = getopt_long(argc, argv, short_options,
+				 long_options, &option_index);
+		if (ch == -1)
+			break;
+
+		options[(int)ch] = 1;
+		switch (ch) {
+		case OptHelp:
+			usage();
+			return 0;
+		case OptSetDevice:
+			device = strdup(optarg);
+                        if (device[0] >= '0' && device[0] <= '9' && device[1] == 0) {
+                                char dev = device[0];
+
+                                sprintf(device, "/dev/video%c", dev);
+                        }
+			break;
+		case OptSetVideoFormat:
+			subs = optarg;
+			while (*subs != '\0') {
+				static char *const subopts[] = {
+					"width",
+					"height",
+					NULL
+				};
+
+				switch (parse_subopt(&subs, subopts, &value)) {
+				case 0:
+					vfmt.fmt.pix.width = strtol(value, 0L, 0);
+					set_fmts |= FMTWidth;
+					break;
+				case 1:
+					vfmt.fmt.pix.height = strtol(value, 0L, 0);
+					set_fmts |= FMTHeight;
+					break;
+				}
+			}
+			break;
+		case OptSetInput:
+			input = strtol(optarg, 0L, 0);
+			break;
+		case OptSetOutput:
+			output = strtol(optarg, 0L, 0);
+			break;
+		case OptSetAudioInput:
+			vaudio.index = strtol(optarg, 0L, 0);
+			break;
+		case OptSetAudioOutput:
+			vaudout.index = strtol(optarg, 0L, 0);
+			break;
+		case OptSetFreq:
+			freq = strtod(optarg, NULL);
+			break;
+		case OptSetStandard:
+                        if (!strncmp(optarg, "pal", 3)) {
+				if (optarg[3])
+					std = parse_pal(optarg + 3);
+				else
+                                	std = V4L2_STD_PAL;
+                        }
+		       	else if (!strncmp(optarg, "ntsc", 4)) {
+				if (optarg[4])
+					std = parse_ntsc(optarg + 4);
+				else
+                                	std = V4L2_STD_NTSC;
+                        }
+		       	else if (!strncmp(optarg, "secam", 5)) {
+				if (optarg[5])
+					std = parse_secam(optarg + 5);
+				else
+                                	std = V4L2_STD_SECAM;
+                        }
+		       	else {
+			        std = strtol(optarg, 0L, 0);
+                        }
+			break;
+		case OptGetCtrl:
+			subs = optarg;
+			while (*subs != '\0') {
+                                parse_next_subopt(&subs, &value);
+                                if (strchr(value, '=')) {
+                                    usage();
+                                    exit(1);
+                                }
+                                else {
+                                    get_ctrls.push_back(value);
+                                }
+			}
+			break;
+		case OptSetCtrl:
+			subs = optarg;
+			while (*subs != '\0') {
+                                parse_next_subopt(&subs, &value);
+                                if (const char *equal = strchr(value, '=')) {
+                                    set_ctrls[std::string(value, (equal - value))] = equal + 1;
+                                }
+                                else {
+                                    fprintf(stderr, "control '%s' without '='\n", value);
+                                    exit(1);
+                                }
+			}
+			break;
+		case OptSetTuner:
+			if (!strcmp(optarg, "stereo"))
+			       	mode = V4L2_TUNER_MODE_STEREO;
+			else if (!strcmp(optarg, "lang1"))
+			       	mode = V4L2_TUNER_MODE_LANG1;
+			else if (!strcmp(optarg, "lang2"))
+			       	mode = V4L2_TUNER_MODE_LANG2;
+			else if (!strcmp(optarg, "bilingual"))
+			       	mode = V4L2_TUNER_MODE_LANG1_LANG2;
+			else if (!strcmp(optarg, "mono"))
+			       	mode = V4L2_TUNER_MODE_MONO;
+			else {
+				fprintf(stderr, "Unknown audio mode\n");
+				usage();
+				return 1;
+			}
+			break;
+		case ':':
+			fprintf(stderr, "Option `%s' requires a value\n",
+				argv[optind]);
+			usage();
+			return 1;
+		case '?':
+			fprintf(stderr, "Unknown argument `%s'\n",
+				argv[optind]);
+			usage();
+			return 1;
+		}
+	}
+	if (optind < argc) {
+		printf("unknown arguments: ");
+		while (optind < argc)
+			printf("%s ", argv[optind++]);
+		printf("\n");
+		usage();
+		return 1;
+	}
+
+	if ((fd = open(device, O_RDWR)) < 0) {
+		fprintf(stderr, "Failed to open %s: %s\n", device,
+			strerror(errno));
+		exit(1);
+	}
+	free(device);
+
+        find_controls(fd);
+        for (ctrl_get_list::iterator iter = get_ctrls.begin(); iter != get_ctrls.end(); ++iter) {
+            if (ctrl_str2id.find(*iter) == ctrl_str2id.end()) {
+                fprintf(stderr, "unknown control '%s'\n", (*iter).c_str());
+                exit(1);
+            }
+        }
+        for (ctrl_set_map::iterator iter = set_ctrls.begin(); iter != set_ctrls.end(); ++iter) {
+            if (ctrl_str2id.find(iter->first) == ctrl_str2id.end()) {
+                fprintf(stderr, "unknown control '%s'\n", iter->first.c_str());
+                exit(1);
+            }
+        }
+
+	if (option_all) {
+		options[OptGetVideoFormat] = 1;
+		options[OptGetDriverInfo] = 1;
+		options[OptGetInput] = 1;
+		options[OptGetOutput] = 1;
+		options[OptGetAudioInput] = 1;
+		options[OptGetAudioOutput] = 1;
+		options[OptGetStandard] = 1;
+		options[OptGetFreq] = 1;
+		options[OptGetTuner] = 1;
+	}
+
+
+	/* Setting Opts */
+
+	if (options[OptSetVideoFormat]) {
+		struct v4l2_format in_vfmt;
+		printf("ioctl: VIDIOC_S_FMT\n");
+		in_vfmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+		if (ioctl(fd, VIDIOC_G_FMT, &in_vfmt) < 0)
+			fprintf(stderr, "ioctl: VIDIOC_G_FMT failed\n");
+		else {
+			printf("\tBefore:\n");
+			if (printfmt(in_vfmt) != 0)
+				fprintf(stderr, "error printing result\n");
+			if (set_fmts & FMTWidth)
+				in_vfmt.fmt.pix.width = vfmt.fmt.pix.width;
+			if (set_fmts & FMTHeight)
+				in_vfmt.fmt.pix.height = vfmt.fmt.pix.height;
+			if (ioctl(fd, VIDIOC_S_FMT, &in_vfmt) < 0)
+				fprintf(stderr, "ioctl: VIDIOC_S_FMT failed\n");
+			vfmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+			if (ioctl(fd, VIDIOC_G_FMT, &vfmt) < 0)
+				fprintf(stderr, "ioctl: VIDIOC_G_FMT failed\n");
+			else {
+				printf("\n\tAfter:\n");
+				if (printfmt(vfmt) != 0)
+					fprintf(stderr,
+						"error printing result\n");
+			}
+		}
+	}
+
+	if (option_streamoff) {
+		int dummy = 0;
+		doioctl(fd, VIDIOC_STREAMOFF, &dummy, "VIDIOC_STREAMOFF");
+	}
+
+	if (options[OptSetFreq]) {
+		double fac = 16;
+
+		if (doioctl(fd, VIDIOC_G_TUNER, &tuner, "VIDIOC_G_TUNER") == 0) {
+			fac = (tuner.capability & V4L2_TUNER_CAP_LOW) ? 16000 : 16;
+		}
+		vf.tuner = 0;
+		vf.type = (enum v4l2_tuner_type)0;
+		vf.frequency = __u32(freq * fac);
+		if (doioctl(fd, VIDIOC_S_FREQUENCY, &vf, 
+			"VIDIOC_S_FREQUENCY") == 0)
+			printf("Frequency set to %d (%f MHz)\n", vf.frequency,
+					vf.frequency / fac);
+	}
+
+	if (options[OptSetStandard]) {
+                if (std < 16) {
+                        vs.index = std;
+                        if (ioctl(fd, VIDIOC_ENUMSTD, &vs) >= 0) {
+                                std = vs.id;
+                        }
+                }
+		if (doioctl(fd, VIDIOC_S_STD, &std, "VIDIOC_S_STD") == 0)
+			printf("Standard set to %08llx\n", (unsigned long long)std);
+	}
+
+	if (options[OptSetCtrl] && !set_ctrls.empty()) {
+		struct v4l2_ext_controls ctrls = { 0 };
+
+		for (ctrl_set_map::iterator iter = set_ctrls.begin(); 
+				iter != set_ctrls.end(); ++iter) {
+			struct v4l2_ext_control ctrl = { 0 };
+
+			ctrl.id = ctrl_str2id[iter->first];
+			ctrl.value = atol(iter->second.c_str());
+			if (V4L2_CTRL_ID2CLASS(ctrl.id) == V4L2_CTRL_CLASS_MPEG)
+				mpeg_ctrls.push_back(ctrl);
+			else
+				user_ctrls.push_back(ctrl);
+		}
+		for (unsigned i = 0; i < user_ctrls.size(); i++) {
+			struct v4l2_control ctrl;
+
+			ctrl.id = user_ctrls[i].id;
+			ctrl.value = user_ctrls[i].value;
+			if (ioctl(fd, VIDIOC_S_CTRL, &ctrl)) {
+				fprintf(stderr, "%s: %s\n",
+					ctrl_id2str[ctrl.id].c_str(),
+					strerror(errno));
+			}
+		}
+		if (mpeg_ctrls.size()) {
+			ctrls.ctrl_class = V4L2_CTRL_CLASS_MPEG;
+			ctrls.count = mpeg_ctrls.size();
+			ctrls.controls = &mpeg_ctrls[0];
+			if (ioctl(fd, VIDIOC_S_EXT_CTRLS, &ctrls)) {
+				if (ctrls.error_idx >= ctrls.count) {
+					fprintf(stderr, "Error setting MPEG controls: %s\n",
+						strerror(errno));
+				}
+				else {
+					fprintf(stderr, "%s: %s\n",
+						ctrl_id2str[mpeg_ctrls[ctrls.error_idx].id].c_str(),
+						strerror(errno));
+				}
+			}
+		}
+	}
+
+	/* informational opts */
+
+	if (options[OptGetDriverInfo]) {
+		if (doioctl(fd, VIDIOC_QUERYCAP, &vcap, "VIDIOC_QUERYCAP") == 0) {
+			printf("Driver info:\n");
+			printf("\tDriver name   : %s\n", vcap.driver);
+			printf("\tCard type     : %s\n", vcap.card);
+			printf("\tBus info      : %s\n", vcap.bus_info);
+			printf("\tDriver version: %d\n", vcap.version);
+			printf("\tCapabilities  : 0x%08X\n", vcap.capabilities);
+			printf("%s", cap2s(vcap.capabilities).c_str());
+		}
+	}
+
+	if (options[OptGetVideoFormat]) {
+		vfmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+		if (doioctl(fd, VIDIOC_G_FMT, &vfmt, "VIDIOC_G_FMT") == 0)
+			if (printfmt(vfmt) != 0)
+				fprintf(stderr, "error printing result\n");
+	}
+
+	if (options[OptListInputs]) {
+		vin.index = 0;
+		printf("ioctl: VIDIOC_ENUMINPUT\n");
+		while (ioctl(fd, VIDIOC_ENUMINPUT, &vin) >= 0) {
+			if (vin.index)
+				printf("\n");
+			printf("\tInput   : %d\n", vin.index);
+			printf("\tName    : %s\n", vin.name);
+			printf("\tType    : 0x%08X\n", vin.type);
+			printf("\tAudioset: 0x%08X\n", vin.audioset);
+			printf("\tTuner   : 0x%08X\n", vin.tuner);
+			printf("\tStandard: 0x%016llX ( ", (unsigned long long)vin.std);
+			if (vin.std & 0x000FFF)
+				printf("PAL ");	// hack
+			if (vin.std & 0x00F000)
+				printf("NTSC ");	// hack
+			if (vin.std & 0x7F0000)
+				printf("SECAM ");	// hack
+			printf(")\n");
+			printf("\tStatus  : %d\n", vin.status);
+			vin.index++;
+		}
+	}
+
+	if (options[OptSetInput]) {
+		if (doioctl(fd, VIDIOC_S_INPUT, &input, "VIDIOC_S_INPUT") == 0) {
+			printf("Video input set to %d", input);
+			vin.index = input;
+			if (ioctl(fd, VIDIOC_ENUMINPUT, &vin) >= 0)
+				printf(" (%s)", vin.name);
+			printf("\n");
+		}
+	}
+
+	if (options[OptGetInput]) {
+		if (doioctl(fd, VIDIOC_G_INPUT, &input, "VIDIOC_G_INPUT") == 0) {
+			printf("Video input : %d", input);
+			vin.index = input;
+			if (ioctl(fd, VIDIOC_ENUMINPUT, &vin) >= 0)
+				printf(" (%s)", vin.name);
+			printf("\n");
+		}
+	}
+
+	if (options[OptListOutputs]) {
+		vout.index = 0;
+		printf("ioctl: VIDIOC_ENUMOUTPUT\n");
+		while (ioctl(fd, VIDIOC_ENUMOUTPUT, &vout) >= 0) {
+			if (vout.index)
+				printf("\n");
+			printf("\tOutput  : %d\n", vout.index);
+			printf("\tName    : %s\n", vout.name);
+			printf("\tType    : 0x%08X\n", vout.type);
+			printf("\tAudioset: 0x%08X\n", vout.audioset);
+			printf("\tStandard: 0x%016llX ( ", (unsigned long long)vout.std);
+			if (vout.std & 0x000FFF)
+				printf("PAL ");	// hack
+			if (vout.std & 0x00F000)
+				printf("NTSC ");	// hack
+			if (vout.std & 0x7F0000)
+				printf("SECAM ");	// hack
+			printf(")\n");
+			vout.index++;
+		}
+	}
+
+	if (options[OptSetOutput]) {
+		if (doioctl(fd, VIDIOC_S_OUTPUT, &output, "VIDIOC_S_OUTPUT") == 0)
+			printf("Output set to %d\n", output);
+	}
+
+	if (options[OptGetOutput]) {
+		if (doioctl(fd, VIDIOC_G_OUTPUT, &output, "VIDIOC_G_OUTPUT") == 0) {
+			printf("Video output: %d", output);
+			vout.index = output;
+			if (ioctl(fd, VIDIOC_ENUMOUTPUT, &vout) >= 0) {
+				printf(" (%s)", vout.name);
+			}
+			printf("\n");
+		}
+	}
+
+	if (options[OptListAudioInputs]) {
+		struct v4l2_audio vaudio;	/* list audio inputs */
+		vaudio.index = 0;
+		printf("ioctl: VIDIOC_ENUMAUDIO\n");
+		while (ioctl(fd, VIDIOC_ENUMAUDIO, &vaudio) >= 0) {
+			if (vaudio.index)
+				printf("\n");
+			printf("\tInput   : %d\n", vaudio.index);
+			printf("\tName    : %s\n", vaudio.name);
+			vaudio.index++;
+		}
+	}
+
+	if (options[OptSetAudioInput]) {
+		if (doioctl(fd, VIDIOC_S_AUDIO, &vaudio, "VIDIOC_S_AUDIO") == 0)
+			printf("Audio input set to %d\n", vaudio.index);
+	}
+
+	if (options[OptGetAudioInput]) {
+		if (doioctl(fd, VIDIOC_G_AUDIO, &vaudio, "VIDIOC_G_AUDIO") == 0)
+			printf("Audio input : %d (%s)\n", vaudio.index, vaudio.name);
+	}
+
+	if (options[OptSetAudioOutput]) {
+		if (doioctl(fd, VIDIOC_S_AUDOUT, &vaudout, "VIDIOC_S_AUDOUT") == 0)
+			printf("Audio output set to %d\n", vaudout.index);
+	}
+
+	if (options[OptGetAudioOutput]) {
+		if (doioctl(fd, VIDIOC_G_AUDOUT, &vaudout, "VIDIOC_G_AUDOUT") == 0)
+			printf("Audio output: %d (%s)\n", vaudout.index, vaudout.name);
+	}
+
+	if (options[OptGetFreq]) {
+		double fac = 16;
+
+		if (doioctl(fd, VIDIOC_G_TUNER, &tuner, "VIDIOC_G_TUNER") == 0) {
+			fac = (tuner.capability & V4L2_TUNER_CAP_LOW) ? 16000 : 16;
+		}
+		vf.tuner = 0;
+		if (doioctl(fd, VIDIOC_G_FREQUENCY, &vf, "VIDIOC_G_FREQUENCY") == 0)
+			printf("Frequency: %d (%f MHz)\n", vf.frequency,
+					vf.frequency / fac);
+	}
+
+	if (option_list_stds) {
+		printf("ioctl: VIDIOC_ENUMSTD\n");
+		vs.index = 0;
+		while (ioctl(fd, VIDIOC_ENUMSTD, &vs) >= 0) {
+			if (vs.index)
+				printf("\n");
+			printf("\tindex       : %d\n", vs.index);
+			printf("\tID          : 0x%016llX\n", (unsigned long long)vs.id);
+			printf("\tName        : %s\n", vs.name);
+			printf("\tFrame period: %d/%d\n",
+			       vs.frameperiod.numerator,
+			       vs.frameperiod.denominator);
+			printf("\tFrame lines : %d\n", vs.framelines);
+			vs.index++;
+		}
+	}
+
+	if (options[OptGetStandard]) {
+		if (doioctl(fd, VIDIOC_G_STD, &std, "VIDIOC_G_STD") == 0)
+			printf("Video standard = 0x%08llx\n", (unsigned long long)std);
+	}
+
+	if (options[OptListCtrlsMenus]) {
+		list_controls(fd, 1);
+	}
+	
+	if (options[OptGetCtrl] && !get_ctrls.empty()) {
+		struct v4l2_ext_controls ctrls = { 0 };
+
+		mpeg_ctrls.clear();
+		user_ctrls.clear();
+		for (ctrl_get_list::iterator iter = get_ctrls.begin(); 
+				iter != get_ctrls.end(); ++iter) {
+			struct v4l2_ext_control ctrl = { 0 };
+
+			ctrl.id = ctrl_str2id[*iter];
+			if (V4L2_CTRL_ID2CLASS(ctrl.id) == V4L2_CTRL_CLASS_MPEG)
+				mpeg_ctrls.push_back(ctrl);
+			else
+				user_ctrls.push_back(ctrl);
+		}
+		for (unsigned i = 0; i < user_ctrls.size(); i++) {
+			struct v4l2_control ctrl;
+
+			ctrl.id = user_ctrls[i].id;
+			doioctl(fd, VIDIOC_G_CTRL, &ctrl, "VIDIOC_G_CTRL");
+			printf("%s: %d\n", ctrl_id2str[ctrl.id].c_str(), ctrl.value);
+		}
+		if (mpeg_ctrls.size()) {
+			ctrls.ctrl_class = V4L2_CTRL_CLASS_MPEG;
+			ctrls.count = mpeg_ctrls.size();
+			ctrls.controls = &mpeg_ctrls[0];
+			doioctl(fd, VIDIOC_S_EXT_CTRLS, &ctrls, "VIDIOC_S_EXT_CTRLS");
+			for (unsigned i = 0; i < mpeg_ctrls.size(); i++) {
+				struct v4l2_ext_control ctrl = mpeg_ctrls[i];
+
+				printf("%s: %d\n", ctrl_id2str[ctrl.id].c_str(), ctrl.value);
+			}
+		}
+	}
+
+	if (options[OptGetTuner]) {
+		struct v4l2_tuner vt;
+		memset(&vt, 0, sizeof(struct v4l2_tuner));
+		if (doioctl(fd, VIDIOC_G_TUNER, &vt, "VIDIOC_G_TUNER") == 0) {
+			printf("Tuner:\n");
+			printf("\tCapabilities         : %s\n", tcap2s(vt.capability).c_str());
+			if (vt.capability & V4L2_TUNER_CAP_LOW)
+				printf("\tFrequency range      : %.1f MHz - %.1f MHz\n",
+				     vt.rangelow / 16000.0, vt.rangehigh / 16000.0);
+			else
+				printf("\tFrequency range      : %.1f MHz - %.1f MHz\n",
+				     vt.rangelow / 16.0, vt.rangehigh / 16.0);
+			printf("\tSignal strength      : %d%%\n", (int)(vt.signal / 655.35));
+			printf("\tCurrent audio mode   : %s\n", audmode2s(vt.audmode));
+			printf("\tAvailable subchannels: %s\n", 
+					rxsubchans2s(vt.rxsubchans).c_str());
+		}
+	}
+	if (options[OptSetTuner]) {
+		struct v4l2_tuner vt;
+
+		memset(&vt, 0, sizeof(struct v4l2_tuner));
+		if (ioctl(fd, VIDIOC_G_TUNER, &vt) < 0) {
+			fprintf(stderr, "ioctl: VIDIOC_G_TUNER failed\n");
+			exit(1);
+		}
+		vt.audmode = mode;
+		doioctl(fd, VIDIOC_S_TUNER, &vt, "VIDIOC_S_TUNER");
+	}
+
+	if (option_version) {
+                //printf("ivtvctl version " IVTV_VERSION "\n");
+	}
+
+	if (options[OptListCtrls]) {
+		list_controls(fd, 0);
+	}
+
+	if (option_log_status) {
+		static char buf[40960];
+		int len;
+
+		if (doioctl(fd, VIDIOC_LOG_STATUS, NULL, "VIDIOC_LOG_STATUS") == 0) {
+			printf("\nStatus Log:\n\n");
+			len = klogctl(3, buf, sizeof(buf) - 1);
+			if (len >= 0) {
+				char *p = buf;
+				char *q;
+
+				buf[len] = 0;
+				while ((q = strstr(p, "START STATUS CARD #"))) {
+					p = q + 1;
+				}
+				if (p) {
+					while (p > buf && *p != '<') p--;
+					q = p;
+					while ((q = strstr(q, "<6>"))) {
+						memcpy(q, "   ", 3);
+					}
+					printf("%s", p);
+				}
+			}
+                }
+	}
+
+	if (option_streamon) {
+		int dummy = 0;
+		doioctl(fd, VIDIOC_STREAMON, &dummy, "VIDIOC_STREAMON");
+	}
+
+	close(fd);
+	exit(0);
+}