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Make setmod tool configurable

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This commit is contained in:
Richard Bérichon 2018-05-24 15:39:55 +02:00
parent cb4834cca0
commit 0d9752284e
1 changed files with 74 additions and 14 deletions
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78
apps/setmod.c
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@ -9,25 +9,85 @@
#include <fcntl.h> #include <fcntl.h>
#include <sys/ioctl.h> #include <sys/ioctl.h>
#include <pthread.h> #include <pthread.h>
#include <errno.h>
#include <linux/dvb/mod.h> #include <linux/dvb/mod.h>
int main() int main(int argc, char* argv[])
{ {
int fd; int fd;
struct dvb_mod_params mp; struct dvb_mod_params mp;
struct dvb_mod_channel_params mc; struct dvb_mod_channel_params mc;
fd = open("/dev/dvb/adapter1/mod0", O_RDONLY); if (argc != 7)
{
printf("Usage: device base_frequency[Hz] attenuation[dB]"
" modulation[qam_16, qam32, qam_64, qam_128, qam256] pcr_correction[1/0]"
" bitrate[bps]\n");
exit(EXIT_FAILURE);
}
mp.base_frequency = 722000000; char *device = argv[1];
mp.attenuator = 0; uint32_t base_freq = strtoul(argv[2], NULL, 10);
if (base_freq < 114000000 || base_freq > 794000000)
{
printf("Invalid frequency \'%i\'\n", base_freq);
exit(EXIT_FAILURE);
}
uint32_t attenuation = strtoul(argv[3], NULL, 10);
enum fe_modulation modulation;
char *modulation_str = argv[4];
if (strcmp(modulation_str, "qam_16") == 0)
{
modulation = QAM_16;
}
else if (strcmp(modulation_str, "qam_32") == 0)
{
modulation = QAM_32;
}
else if (strcmp(modulation_str, "qam_64") == 0)
{
modulation = QAM_64;
}
else if (strcmp(modulation_str, "qam_128") == 0)
{
modulation = QAM_128;
}
else if (strcmp(modulation_str, "qam_256") == 0)
{
modulation = QAM_256;
}
else
{
printf("Invalid modulation \'%s\'\n", modulation_str);
exit(EXIT_FAILURE);
}
int pcr_correction = strtoul(argv[5], NULL, 10);
uint64_t bitrate = strtoul(argv[6], NULL, 10);
fd = open(device, O_RDONLY);
if (fd == -1)
{
printf("Invalid device \'%s\': %s\n", device, strerror(errno));
exit(EXIT_FAILURE);
}
printf("Setting base_freq=%u attenuation=%u modulation=%s, pcr_correction=%d"
"input_bitrate=%u on %s\n",
base_freq, attenuation, modulation_str, pcr_correction, bitrate, device);
mp.base_frequency = base_freq;
mp.attenuator = attenuation;
ioctl(fd, DVB_MOD_SET, &mp); ioctl(fd, DVB_MOD_SET, &mp);
mc.modulation = QAM_256; mc.modulation = modulation;
mc.input_bitrate = 40000000ULL << 32; mc.input_bitrate = bitrate << 32;
mc.pcr_correction = 0; mc.pcr_correction = pcr_correction;
ioctl(fd, DVB_MOD_CHANNEL_SET, &mc); if (ioctl(fd, DVB_MOD_CHANNEL_SET, &mc) != 0)
{
printf("Invalid options: %s\n", strerror(errno));
exit(EXIT_FAILURE);
}
close(fd); close(fd);
} }