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configurable input channel

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This commit is contained in:
Devaev Maxim 2018-10-02 23:28:35 +03:00
parent 8924cdcac4
commit a0c87c1c04
3 changed files with 16 additions and 5 deletions
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9
src/device.c
View File

@ -185,6 +185,7 @@ void device_close(struct device_t *dev) {
static int _device_open_check_cap(struct device_t *dev) {
struct v4l2_capability cap;
int input = dev->input; // Needs pointer to int for ioctl()
MEMSET_ZERO(cap);
@ -204,10 +205,16 @@ static int _device_open_check_cap(struct device_t *dev) {
return -1;
}
LOG_INFO("Using input channel: %d", input);
if (xioctl(dev->run->fd, VIDIOC_S_INPUT, &input) < 0) {
LOG_ERROR("Can't set input channel");
return -1;
}
if (dev->standard != V4L2_STD_UNKNOWN) {
LOG_INFO("Using TV standard: %s", _standard_to_string(dev->standard));
if (xioctl(dev->run->fd, VIDIOC_S_STD, &dev->standard) < 0) {
LOG_PERROR("Can't set video standard");
LOG_ERROR("Can't set video standard");
return -1;
}
} else {

1
src/device.h
View File

@ -64,6 +64,7 @@ struct device_runtime_t {
struct device_t {
char *path;
unsigned input;
unsigned width;
unsigned height;
unsigned format;

11
src/main.c
View File

@ -40,9 +40,10 @@
#include "http.h"
static const char _short_opts[] = "d:x:y:f:a:e:z:tn:w:q:c:s:p:r:h";
static const char _short_opts[] = "d:i:x:y:f:a:e:z:tn:w:q:c:s:p:r:h";
static const struct option _long_opts[] = {
{"device", required_argument, NULL, 'd'},
{"input", required_argument, NULL, 'i'},
{"width", required_argument, NULL, 'x'},
{"height", required_argument, NULL, 'y'},
{"format", required_argument, NULL, 'f'},
@ -83,9 +84,10 @@ static void _help(struct device_t *dev, struct encoder_t *encoder, struct http_s
printf("Copyright (C) 2018 Maxim Devaev <mdevaev@gmail.com>\n\n");
printf("Capturing options:\n");
printf("------------------\n");
printf(" -d|--device </dev/path> -- Path to V4L2 device. Default: %s\n\n", dev->path);
printf(" -x|--width <N> -- Initial image width. Default: %d\n\n", dev->width);
printf(" -y|--height <N> -- Initial image height. Default: %d\n\n", dev->height);
printf(" -d|--device </dev/path> -- Path to V4L2 device. Default: %s.\n\n", dev->path);
printf(" -i|--input <N> -- Input channel. Default: %u.\n\n", dev->input);
printf(" -x|--width <N> -- Initial image width. Default: %d.\n\n", dev->width);
printf(" -y|--height <N> -- Initial image height. Default: %d.\n\n", dev->height);
printf(" -f|--format <fmt> -- Image format.\n");
printf(" Available: %s; default: YUYV.\n\n", FORMATS_STR);
printf(" -a|--tv-standard <std> -- Force TV standard.\n");
@ -156,6 +158,7 @@ static int _parse_options(int argc, char *argv[], struct device_t *dev, struct e
while ((ch = getopt_long(argc, argv, _short_opts, _long_opts, &index)) >= 0) {
switch (ch) {
case 'd': OPT_SET(dev->path, optarg);
case 'i': OPT_UNSIGNED(dev->input, "--input", 0, 128);
case 'x': OPT_UNSIGNED(dev->width, "--width", 320, 1920);
case 'y': OPT_UNSIGNED(dev->height, "--height", 180, 1200);
# pragma GCC diagnostic ignored "-Wsign-compare"