gstreamer/tests/icles/v4l2src-test.c

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/* GStreamer
*
* Copyright (C) 2006 Edgard Lima <edgard dot lima at indt dot org dot br>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <getopt.h>
#include <gst/gst.h>
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#include <gst/video/colorbalance.h>
#include <gst/video/videoorientation.h>
GstElement *pipeline, *source, *sink;
GMainLoop *loop;
volatile int exit_read = 0;
static void
print_options (void)
{
printf ("\nf - to change the fequency\n");
printf ("i - to change the input\n");
printf ("n - to change the norm\n");
printf ("c - list color balance\n");
printf ("v - change video orientarion\n");
printf ("e - to exit\n");
}
static void
run_options (char opt)
{
int res;
switch (opt) {
#if 0
case 'f':
{
GstTuner *tuner = GST_TUNER (source);
GstTunerChannel *channel;
guint freq;
channel = gst_tuner_get_channel (tuner);
freq = gst_tuner_get_frequency (tuner, channel);
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printf ("\ntype the new frequency (current = %u) (-1 to cancel): ", freq);
res = scanf ("%u", &freq);
if (res != 1 || freq != -1)
gst_tuner_set_frequency (tuner, channel, freq);
}
break;
case 'n':
{
GstTuner *tuner = GST_TUNER (source);
const GList *item, *list;
const GstTunerNorm *current_norm;
GstTunerNorm *norm = NULL;
gint index, next_norm;
list = gst_tuner_list_norms (tuner);
current_norm = gst_tuner_get_norm (tuner);
printf ("\nlist of norms:\n");
for (item = list, index = 0; item != NULL; item = item->next, ++index) {
norm = item->data;
if (current_norm == norm) {
printf (" * %u - %s\n", index, norm->label);
} else {
printf (" %u - %s\n", index, norm->label);
}
}
printf ("\ntype the number of norm you want (-1 to cancel): ");
res = scanf ("%d", &next_norm);
if (res != 1 || next_norm < 0) {
break;
}
if (index <= next_norm) {
printf ("Norm %d not available\n", next_norm);
break;
}
for (item = list, index = 0; item != NULL && index <= next_norm;
item = item->next, ++index) {
norm = item->data;
}
if (norm)
gst_tuner_set_norm (tuner, norm);
}
break;
case 'i':
{
GstTuner *tuner = GST_TUNER (source);
const GList *item, *list;
const GstTunerChannel *current_channel;
GstTunerChannel *channel = NULL;
gint index, next_channel;
list = gst_tuner_list_channels (tuner);
current_channel = gst_tuner_get_channel (tuner);
printf ("\nlist of inputs:\n");
for (item = list, index = 0; item != NULL; item = item->next, ++index) {
channel = item->data;
if (current_channel == channel) {
printf (" * %u - %s\n", index, channel->label);
} else {
printf (" %u - %s\n", index, channel->label);
}
}
printf ("\ntype the number of input you want (-1 to cancel): ");
res = scanf ("%d", &next_channel);
if (res != 1 || next_channel < 0) {
break;
}
if (index <= next_channel) {
printf ("Input %d not available\n", next_channel);
break;
}
for (item = list, index = 0; item != NULL && index <= next_channel;
item = item->next, ++index) {
channel = item->data;
}
if (channel)
gst_tuner_set_channel (tuner, channel);
}
break;
#endif
case 'e':
gst_element_set_state (pipeline, GST_STATE_NULL);
g_main_loop_quit (loop);
printf ("Bye\n");
g_thread_exit (0);
break;
case 'c':
{
GstColorBalance *balance = GST_COLOR_BALANCE (source);
const GList *controls;
GstColorBalanceChannel *channel;
const GList *item;
gint index, new_value;
controls = gst_color_balance_list_channels (balance);
printf ("\n");
if (controls == NULL) {
printf ("There is no list of colorbalance controls\n");
goto done;
}
if (controls) {
printf ("list of controls:\n");
for (item = controls, index = 0; item != NULL;
item = item->next, ++index) {
channel = item->data;
printf (" %u - %s (%d - %d) = %d\n", index, channel->label,
channel->min_value, channel->max_value,
gst_color_balance_get_value (balance, channel));
}
printf ("\ntype the number of color control you want (-1 to cancel): ");
res = scanf ("%d", &new_value);
if (res != 1 || new_value == -1)
break;
for (item = controls, index = 0; item != NULL && index <= new_value;
item = item->next, ++index) {
channel = item->data;
}
printf (" %u - %s (%d - %d) = %d, type the new value: ", index - 1,
channel->label, channel->min_value, channel->max_value,
gst_color_balance_get_value (balance, channel));
res = scanf ("%d", &new_value);
if (res != 1 || new_value == -1)
break;
gst_color_balance_set_value (balance, channel, new_value);
}
}
case 'v':
{
GstVideoOrientation *vidorient = GST_VIDEO_ORIENTATION (source);
gboolean flip = FALSE;
gint center = 0;
printf ("\n");
if (gst_video_orientation_get_hflip (vidorient, &flip)) {
gint new_value;
printf ("Horizontal flip is %s\n", flip ? "on" : "off");
printf ("\ntype 1 to toggle (-1 to cancel): ");
res = scanf ("%d", &new_value);
if (res != 1 || new_value == 1) {
flip = !flip;
if (gst_video_orientation_set_hflip (vidorient, flip)) {
gst_video_orientation_get_hflip (vidorient, &flip);
printf ("Now horizontal flip is %s\n", flip ? "on" : "off");
} else {
printf ("Error toggling horizontal flip\n");
}
} else {
}
} else {
printf ("Horizontal flip control not available\n");
}
if (gst_video_orientation_get_vflip (vidorient, &flip)) {
gint new_value;
printf ("\nVertical flip is %s\n", flip ? "on" : "off");
printf ("\ntype 1 to toggle (-1 to cancel): ");
res = scanf ("%d", &new_value);
if (res != 1 || new_value == 1) {
flip = !flip;
if (gst_video_orientation_set_vflip (vidorient, flip)) {
gst_video_orientation_get_vflip (vidorient, &flip);
printf ("Now vertical flip is %s\n", flip ? "on" : "off");
} else {
printf ("Error toggling vertical flip\n");
}
} else {
}
} else {
printf ("Vertical flip control not available\n");
}
if (gst_video_orientation_get_hcenter (vidorient, &center)) {
printf ("Horizontal center is %d\n", center);
printf ("\ntype the new horizontal center value (-1 to cancel): ");
res = scanf ("%d", &center);
if (res != 1 || center != -1) {
if (gst_video_orientation_set_hcenter (vidorient, center)) {
gst_video_orientation_get_hcenter (vidorient, &center);
printf ("Now horizontal center is %d\n", center);
} else {
printf ("Error setting horizontal center\n");
}
} else {
}
} else {
printf ("Horizontal center control not available\n");
}
if (gst_video_orientation_get_vcenter (vidorient, &center)) {
printf ("Vertical center is %d\n", center);
printf ("\ntype the new vertical center value (-1 to cancel): ");
res = scanf ("%d", &center);
if (res != 1 || center != -1) {
if (gst_video_orientation_set_vcenter (vidorient, center)) {
gst_video_orientation_get_vcenter (vidorient, &center);
printf ("Now vertical center is %d\n", center);
} else {
printf ("Error setting vertical center\n");
}
} else {
}
} else {
printf ("Vertical center control not available\n");
}
}
break;
break;
default:
if (opt != 10)
printf ("error: invalid option %c", opt);
break;
}
done:
return;
}
static gpointer
read_user (gpointer data)
{
char opt;
while (!exit_read) {
print_options ();
do {
opt = getchar ();
if (exit_read) {
break;
}
} while (opt == '\n');
run_options (opt);
}
return NULL;
}
static gboolean
my_bus_callback (GstBus * bus, GstMessage * message, gpointer data)
{
switch (GST_MESSAGE_TYPE (message)) {
case GST_MESSAGE_ERROR:{
GError *err;
gchar *debug;
gchar *str;
gst_message_parse_error (message, &err, &debug);
str = gst_element_get_name (message->src);
g_print ("%s error: %s\n", str, err->message);
g_free (str);
g_print ("Debug: %s\n", debug);
g_error_free (err);
g_free (debug);
printf ("presse <ENTER> key to exit\n");
exit_read = 1;
g_main_loop_quit (loop);
break;
case GST_MESSAGE_EOS:
/* end-of-stream */
printf ("presse any key to exit\n");
exit_read = 1;
g_main_loop_quit (loop);
break;
default:
break;
}
}
return TRUE;
}
int
main (int argc, char *argv[])
{
GThread *input_thread;
gint numbuffers = -1;
gchar device[128] = { '\0' };
gchar input[128] = { '\0' };
gulong frequency = 0;
GstBus *bus;
/* see for input option */
int c;
while (1) {
static char long_options_desc[][64] = {
{"Number of buffers to output before sending EOS"},
{"Device location. Common in /dev/video0"},
{"input/output (channel) to switch to"},
{"frequency to tune to (in Hz)"},
{0, 0, 0, 0}
};
static struct option long_options[] = {
{"numbuffers", 1, 0, 'n'},
{"device", 1, 0, 'd'},
{"input", 1, 0, 'i'},
{"frequency", 1, 0, 'f'},
{0, 0, 0, 0}
};
/* getopt_long stores the option index here. */
int option_index = 0;
c = getopt_long (argc, argv, "n:d:i:f:h", long_options, &option_index);
/* Detect the end of the options. */
if (c == -1) {
printf ("tip: use -h to see help message.\n");
break;
}
switch (c) {
case 0:
/* If this option set a flag, do nothing else now. */
if (long_options[option_index].flag != 0)
break;
printf ("option %s", long_options[option_index].name);
if (optarg)
printf (" with arg %s", optarg);
printf ("\n");
break;
case 'n':
numbuffers = atoi (optarg);
break;
case 'd':
strncpy (device, optarg, sizeof (device) / sizeof (device[0]));
break;
case 'i':
strncpy (input, optarg, sizeof (input) / sizeof (input[0]));
break;
case 'f':
frequency = atol (optarg);
break;
case 'h':
printf ("Usage: v4l2src-test [OPTION]...\n");
for (c = 0; long_options[c].name; ++c) {
printf ("-%c, --%s\r\t\t\t\t%s\n", long_options[c].val,
long_options[c].name, long_options_desc[c]);
}
exit (0);
break;
case '?':
/* getopt_long already printed an error message. */
printf ("Use -h to see help message.\n");
break;
default:
abort ();
}
}
/* Print any remaining command line arguments (not options). */
if (optind < argc) {
printf ("Use -h to see help message.\n" "non-option ARGV-elements: ");
while (optind < argc)
printf ("%s ", argv[optind++]);
putchar ('\n');
}
/* init */
gst_init (&argc, &argv);
/* create elements */
if (!(pipeline = gst_pipeline_new ("my_pipeline"))) {
fprintf (stderr, "error: gst_pipeline_new return NULL");
return -1;
}
if (!(source = gst_element_factory_make ("v4l2src", NULL))) {
fprintf (stderr,
"error: gst_element_factory_make (\"v4l2src\", NULL) return NULL");
return -1;
}
if (!(sink = gst_element_factory_make ("xvimagesink", NULL))) {
fprintf (stderr,
"error: gst_element_factory_make (\"xvimagesink\", NULL) return NULL");
return -1;
}
if (numbuffers > -1) {
g_object_set (source, "num-buffers", numbuffers, NULL);
}
if (device[0]) {
g_object_set (source, "device", device, NULL);
}
if (input[0]) {
g_object_set (source, "input", input, NULL);
}
if (frequency) {
g_object_set (source, "frequency", frequency, NULL);
}
/* you would normally check that the elements were created properly */
bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));
gst_bus_add_watch (bus, my_bus_callback, NULL);
/* put together a pipeline */
gst_bin_add_many (GST_BIN (pipeline), source, sink, NULL);
gst_element_link_pads (source, "src", sink, "sink");
/* start the pipeline */
gst_element_set_state (GST_ELEMENT (pipeline), GST_STATE_PLAYING);
loop = g_main_loop_new (NULL, FALSE);
input_thread = g_thread_try_new ("v4l2src-test", read_user, source, NULL);
if (input_thread == NULL) {
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fprintf (stderr, "error: g_thread_try_new() failed");
return -1;
}
g_main_loop_run (loop);
g_thread_join (input_thread);
gst_element_set_state (GST_ELEMENT (pipeline), GST_STATE_NULL);
gst_object_unref (bus);
gst_object_unref (pipeline);
gst_deinit ();
return 0;
}