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-rw-r--r--util/szap/tzap.c344
1 files changed, 282 insertions, 62 deletions
diff --git a/util/szap/tzap.c b/util/szap/tzap.c
index 2527c23..cd87bfa 100644
--- a/util/szap/tzap.c
+++ b/util/szap/tzap.c
@@ -1,3 +1,24 @@
+/* tzap -- DVB-T zapping utility
+ */
+
+/*
+ * Added recording to a file
+ * arguments:
+ *
+ * -t timeout (seconds)
+ * -o filename output filename (use -o - for stdout)
+ * -s only print summary
+ * -S run silently (no output)
+ *
+ * Bernard Hatt 24/2/04
+ */
+
+
+
+#define _FILE_OFFSET_BITS 64
+#define _LARGEFILE_SOURCE 1
+#define _LARGEFILE64_SOURCE 1
+
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
@@ -9,15 +30,19 @@
#include <fcntl.h>
#include <ctype.h>
#include <errno.h>
+#include <signal.h>
#include <linux/dvb/frontend.h>
#include <linux/dvb/dmx.h>
-
static char FRONTEND_DEV [80];
static char DEMUX_DEV [80];
+static char DVR_DEV [80];
+static int timeout_flag=0;
+static int silent=0,timeout=0;
+static int exit_after_tuning;
-#define CHANNEL_FILE "/.tzap/channels.conf"
+#define CHANNEL_FILE "channels.conf"
#define ERROR(x...) \
do { \
@@ -68,14 +93,16 @@ static const Param guard_list [] = {
{"GUARD_INTERVAL_1_16", GUARD_INTERVAL_1_16},
{"GUARD_INTERVAL_1_32", GUARD_INTERVAL_1_32},
{"GUARD_INTERVAL_1_4", GUARD_INTERVAL_1_4},
- {"GUARD_INTERVAL_1_8", GUARD_INTERVAL_1_8}
+ {"GUARD_INTERVAL_1_8", GUARD_INTERVAL_1_8},
+ {"GUARD_INTERVAL_AUTO", GUARD_INTERVAL_AUTO}
};
static const Param hierarchy_list [] = {
{ "HIERARCHY_1", HIERARCHY_1 },
{ "HIERARCHY_2", HIERARCHY_2 },
{ "HIERARCHY_4", HIERARCHY_4 },
- { "HIERARCHY_NONE", HIERARCHY_NONE }
+ { "HIERARCHY_NONE", HIERARCHY_NONE },
+ { "HIERARCHY_AUTO", HIERARCHY_AUTO }
};
static const Param constellation_list [] = {
@@ -84,12 +111,14 @@ static const Param constellation_list [] = {
{ "QAM_16", QAM_16 },
{ "QAM_256", QAM_256 },
{ "QAM_32", QAM_32 },
- { "QAM_64", QAM_64 }
+ { "QAM_64", QAM_64 },
+ { "QAM_AUTO", QAM_AUTO }
};
static const Param transmissionmode_list [] = {
{ "TRANSMISSION_MODE_2K", TRANSMISSION_MODE_2K },
{ "TRANSMISSION_MODE_8K", TRANSMISSION_MODE_8K },
+ { "TRANSMISSION_MODE_AUTO", TRANSMISSION_MODE_AUTO }
};
#define LIST_SIZE(x) sizeof(x)/sizeof(Param)
@@ -100,7 +129,7 @@ int parse_param (int fd, const Param * plist, int list_size, int *param)
{
char c;
int character = 0;
- int index = 0;
+ int _index = 0;
while (1) {
if (read(fd, &c, 1) < 1)
@@ -111,9 +140,9 @@ int parse_param (int fd, const Param * plist, int list_size, int *param)
break;
while (toupper(c) != plist->name[character]) {
- index++;
+ _index++;
plist++;
- if (index >= list_size) /* parse error, no valid */
+ if (_index >= list_size) /* parse error, no valid */
return -2; /* parameter name found */
}
@@ -150,7 +179,10 @@ int parse_int(int fd, int *val)
return -3; /* to fit in 32 bit */
};
+ errno = 0;
*val = strtol(number, NULL, 10);
+ if (errno == ERANGE)
+ return -4;
return 0;
}
@@ -167,13 +199,18 @@ int find_channel(int fd, const char *channel)
if (read(fd, &c, 1) < 1)
return -1; /* EOF! */
- if (c == ':' && channel[character] == '\0')
- break;
-
- if (toupper(c) == toupper(channel[character]))
- character++;
- else
+ if ( '\n' == c ) /* start of line */
character = 0;
+ else if ( character >= 0 ) { /* we are in the namefield */
+
+ if (c == ':' && channel[character] == '\0')
+ break;
+
+ if (toupper(c) == toupper(channel[character]))
+ character++;
+ else
+ character = -1;
+ }
};
return 0;
@@ -211,12 +248,32 @@ int try_parse_param(int fd, const Param * plist, int list_size, int *param,
return err;
}
+static int check_fec(fe_code_rate_t *fec)
+{
+ switch (*fec)
+ {
+ case FEC_NONE:
+ *fec = FEC_AUTO;
+ case FEC_AUTO:
+ case FEC_1_2:
+ case FEC_2_3:
+ case FEC_3_4:
+ case FEC_5_6:
+ case FEC_7_8:
+ return 0;
+ default:
+ ;
+ }
+ return 1;
+}
+
int parse(const char *fname, const char *channel,
struct dvb_frontend_parameters *frontend, int *vpid, int *apid)
{
int fd;
int err;
+ int tmp;
if ((fd = open(fname, O_RDONLY | O_NONBLOCK)) < 0) {
PERROR ("could not open file '%s'", fname);
@@ -229,54 +286,57 @@ int parse(const char *fname, const char *channel,
return -2;
}
- if ((err = try_parse_int(fd, &frontend->frequency, "frequency")))
+ if ((err = try_parse_int(fd, &tmp, "frequency")))
return -3;
+ frontend->frequency = tmp;
if ((err = try_parse_param(fd,
inversion_list, LIST_SIZE(inversion_list),
- (int *) &frontend->inversion,
- "inversion")))
+ &tmp, "inversion")))
return -4;
+ frontend->inversion = tmp;
if ((err = try_parse_param(fd, bw_list, LIST_SIZE(bw_list),
- (int *) &frontend->u.ofdm.bandwidth,
- "bandwidth")))
+ &tmp, "bandwidth")))
return -5;
+ frontend->u.ofdm.bandwidth = tmp;
if ((err = try_parse_param(fd, fec_list, LIST_SIZE(fec_list),
- (int *) &frontend->u.ofdm.code_rate_HP,
- "code_rate_HP")))
+ &tmp, "code_rate_HP")))
+ return -6;
+ frontend->u.ofdm.code_rate_HP = tmp;
+ if (check_fec(&frontend->u.ofdm.code_rate_HP))
return -6;
if ((err = try_parse_param(fd, fec_list, LIST_SIZE(fec_list),
- (int *) &frontend->u.ofdm.code_rate_LP,
- "code_rate_LP")))
+ &tmp, "code_rate_LP")))
+ return -7;
+ frontend->u.ofdm.code_rate_LP = tmp;
+ if (check_fec(&frontend->u.ofdm.code_rate_LP))
return -7;
if ((err = try_parse_param(fd, constellation_list,
LIST_SIZE(constellation_list),
- (int *) &frontend->u.ofdm.constellation,
- "constellation")))
+ &tmp, "constellation")))
return -8;
+ frontend->u.ofdm.constellation = tmp;
if ((err = try_parse_param(fd, transmissionmode_list,
LIST_SIZE(transmissionmode_list),
- (int *) &frontend->u.ofdm.
- transmission_mode,
- "transmission_mode")))
+ &tmp, "transmission_mode")))
return -9;
+ frontend->u.ofdm.transmission_mode = tmp;
if ((err = try_parse_param(fd, guard_list, LIST_SIZE(guard_list),
- (int *) &frontend->u.ofdm.
- guard_interval, "guard_interval")))
+ &tmp, "guard_interval")))
return -10;
+ frontend->u.ofdm.guard_interval = tmp;
if ((err = try_parse_param(fd, hierarchy_list,
LIST_SIZE(hierarchy_list),
- (int *) &frontend->u.ofdm.
- hierarchy_information,
- "hierarchy_information")))
+ &tmp, "hierarchy_information")))
return -11;
+ frontend->u.ofdm.hierarchy_information = tmp;
if ((err = try_parse_int(fd, vpid, "Video PID")))
return -12;
@@ -330,7 +390,8 @@ int setup_frontend (int fe_fd, struct dvb_frontend_parameters *frontend)
return -1;
}
- printf ("tuning to %i Hz\n", frontend->frequency);
+ if (silent<2)
+ fprintf (stderr,"tuning to %i Hz\n", frontend->frequency);
if (ioctl(fe_fd, FE_SET_FRONTEND, frontend) < 0) {
PERROR("ioctl FE_SET_FRONTEND failed");
@@ -340,38 +401,115 @@ int setup_frontend (int fe_fd, struct dvb_frontend_parameters *frontend)
return 0;
}
+static void
+do_timeout(int x)
+{
+ (void)x;
+ if (timeout_flag==0)
+ {
+ timeout_flag=1;
+ alarm(2);
+ signal(SIGALRM, do_timeout);
+ }
+ else
+ {
+ /* something has gone wrong ... exit */
+ exit(1);
+ }
+}
-static
-int check_frontend (int fe_fd)
+static void
+print_frontend_stats (int fe_fd, int human_readable)
{
fe_status_t status;
- uint16_t snr, signal;
+ uint16_t snr, _signal;
uint32_t ber, uncorrected_blocks;
- do {
- ioctl(fe_fd, FE_READ_STATUS, &status);
- ioctl(fe_fd, FE_READ_SIGNAL_STRENGTH, &signal);
- ioctl(fe_fd, FE_READ_SNR, &snr);
- ioctl(fe_fd, FE_READ_BER, &ber);
- ioctl(fe_fd, FE_READ_UNCORRECTED_BLOCKS, &uncorrected_blocks);
+ ioctl(fe_fd, FE_READ_STATUS, &status);
+ ioctl(fe_fd, FE_READ_SIGNAL_STRENGTH, &_signal);
+ ioctl(fe_fd, FE_READ_SNR, &snr);
+ ioctl(fe_fd, FE_READ_BER, &ber);
+ ioctl(fe_fd, FE_READ_UNCORRECTED_BLOCKS, &uncorrected_blocks);
+
+ if (human_readable) {
+ printf ("status %02x | signal %3u%% | snr %3u%% | ber %d | unc %d | ",
+ status, (_signal * 100) / 0xffff, (snr * 100) / 0xffff, ber, uncorrected_blocks);
+ } else {
+ fprintf (stderr, "status %02x | signal %04x | snr %04x | ber %08x | unc %08x | ",
+ status, _signal, snr, ber, uncorrected_blocks);
+ }
- printf ("status %02x | signal %04x | snr %04x | "
- "ber %08x | unc %08x | ",
- status, signal, snr, ber, uncorrected_blocks);
+ if (status & FE_HAS_LOCK)
+ fprintf(stderr,"FE_HAS_LOCK");
- if (status & FE_HAS_LOCK)
- printf("FE_HAS_LOCK");
+ fprintf(stderr,"\n");
+}
+static
+int check_frontend (int fe_fd, int human_readable)
+{
+ fe_status_t status;
+ do {
+ ioctl(fe_fd, FE_READ_STATUS, &status);
+ if (!silent)
+ print_frontend_stats(fe_fd, human_readable);
+ if (exit_after_tuning && (status & FE_HAS_LOCK))
+ break;
usleep(1000000);
-
- printf("\n");
- } while (1);
+ } while (!timeout_flag);
+ if (silent < 2)
+ print_frontend_stats (fe_fd, human_readable);
return 0;
}
+#define BUFLEN (188*256)
+static
+void copy_to_file(int in_fd, int out_fd)
+{
+ char buf[BUFLEN];
+ int r;
+ long long int rc = 0LL;
+ while(timeout_flag==0)
+ {
+ r=read(in_fd,buf,BUFLEN);
+ if (r < 0) {
+ if (errno == EOVERFLOW) {
+ printf("buffer overrun\n");
+ continue;
+ }
+ PERROR("Read failed");
+ break;
+ }
+ if (write(out_fd,buf,r) < 0) {
+ PERROR("Write failed");
+ break;
+ }
+ rc+=r;
+ }
+ if (silent<2)
+ {
+ fprintf(stderr, "copied %lld bytes (%lld Kbytes/sec)\n",rc,rc/(1024*timeout));
+ }
+}
-static const char *usage = "\nusage: %s [-a adapter_num] [-f frontend_id] [-d demux_id] [-c conf_file] [-r] <channel name>\n\n";
+static char *usage =
+ "usage:\n"
+ " tzap [options] <channel_name>\n"
+ " zap to channel channel_name (case insensitive)\n"
+ " -a number : use given adapter (default 0)\n"
+ " -f number : use given frontend (default 0)\n"
+ " -d number : use given demux (default 0)\n"
+ " -c file : read channels list from 'file'\n"
+ " -x : exit after tuning\n"
+ " -r : set up /dev/dvb/adapterX/dvr0 for TS recording\n"
+ " -s : only print summary\n"
+ " -S : run silently (no output)\n"
+ " -H : human readable output\n"
+ " -F : set up frontend only, don't touch demux\n"
+ " -t number : timeout (seconds)\n"
+ " -o file : output filename (use -o - for stdout)\n"
+ " -h -? : display this help and exit\n";
int main(int argc, char **argv)
@@ -382,10 +520,14 @@ int main(int argc, char **argv)
char *channel = NULL;
int adapter = 0, frontend = 0, demux = 0, dvr = 0;
int vpid, apid;
- int frontend_fd, audio_fd, video_fd;
+ int frontend_fd, audio_fd = 0, video_fd = 0, dvr_fd, file_fd;
int opt;
+ int record = 0;
+ int frontend_only = 0;
+ char *filename = NULL;
+ int human_readable = 0;
- while ((opt = getopt(argc, argv, "hrn:a:f:d:c:")) != -1) {
+ while ((opt = getopt(argc, argv, "H?hrxRsFSn:a:f:d:c:t:o:")) != -1) {
switch (opt) {
case 'a':
adapter = strtoul(optarg, NULL, 0);
@@ -396,12 +538,34 @@ int main(int argc, char **argv)
case 'd':
demux = strtoul(optarg, NULL, 0);
break;
+ case 't':
+ timeout = strtoul(optarg, NULL, 0);
+ break;
+ case 'o':
+ filename = strdup(optarg);
+ record=1;
+ /* fall through */
case 'r':
dvr = 1;
break;
+ case 'x':
+ exit_after_tuning = 1;
+ break;
case 'c':
confname = optarg;
break;
+ case 's':
+ silent = 1;
+ break;
+ case 'S':
+ silent = 2;
+ break;
+ case 'F':
+ frontend_only = 1;
+ break;
+ case 'H':
+ human_readable = 1;
+ break;
case '?':
case 'h':
default:
@@ -424,17 +588,25 @@ int main(int argc, char **argv)
snprintf (DEMUX_DEV, sizeof(DEMUX_DEV),
"/dev/dvb/adapter%i/demux%i", adapter, demux);
- printf ("using '%s' and '%s'\n", FRONTEND_DEV, DEMUX_DEV);
+ snprintf (DVR_DEV, sizeof(DVR_DEV),
+ "/dev/dvb/adapter%i/dvr%i", adapter, demux);
+
+ if (silent<2)
+ fprintf (stderr,"using '%s' and '%s'\n", FRONTEND_DEV, DEMUX_DEV);
if (!confname)
{
+ int len = strlen(homedir) + strlen(CHANNEL_FILE) + 18;
if (!homedir)
ERROR ("$HOME not set");
- confname = malloc (strlen(homedir) + strlen(CHANNEL_FILE) + 1);
- memcpy (confname, homedir, strlen(homedir));
- memcpy (confname + strlen(homedir), CHANNEL_FILE,
- strlen(CHANNEL_FILE) + 1);
+ confname = malloc (len);
+ snprintf (confname, len, "%s/.tzap/%i/%s",
+ homedir, adapter, CHANNEL_FILE);
+ if (access (confname, R_OK))
+ snprintf (confname, len, "%s/.tzap/%s",
+ homedir, CHANNEL_FILE);
}
+ printf("reading channels from file '%s'\n", confname);
memset(&frontend_param, 0, sizeof(struct dvb_frontend_parameters));
@@ -449,12 +621,17 @@ int main(int argc, char **argv)
if (setup_frontend (frontend_fd, &frontend_param) < 0)
return -1;
+ if (frontend_only)
+ goto just_the_frontend_dude;
+
if ((video_fd = open(DEMUX_DEV, O_RDWR)) < 0) {
PERROR("failed opening '%s'", DEMUX_DEV);
return -1;
}
- printf ("video pid 0x%04x, audio pid 0x%04x\n", vpid, apid);
+ if (silent<2)
+ fprintf (stderr,"video pid 0x%04x, audio pid 0x%04x\n", vpid, apid);
+
if (set_pesfilter (video_fd, vpid, DMX_PES_VIDEO, dvr) < 0)
return -1;
@@ -466,7 +643,51 @@ int main(int argc, char **argv)
if (set_pesfilter (audio_fd, apid, DMX_PES_AUDIO, dvr) < 0)
return -1;
- check_frontend (frontend_fd);
+ signal(SIGALRM,do_timeout);
+ if (timeout>0)
+ alarm(timeout);
+
+
+ if (record)
+ {
+ if (filename!=NULL)
+ {
+ if (strcmp(filename,"-")!=0)
+ {
+ file_fd = open (filename,O_WRONLY|O_LARGEFILE|O_CREAT,0644);
+ if (file_fd<0)
+ {
+ PERROR("open of '%s' failed",filename);
+ return -1;
+ }
+ }
+ else
+ {
+ file_fd=1;
+ }
+ }
+ else
+ {
+ PERROR("Record mode but no filename!");
+ return -1;
+ }
+
+ if ((dvr_fd = open(DVR_DEV, O_RDONLY)) < 0) {
+ PERROR("failed opening '%s'", DVR_DEV);
+ return -1;
+ }
+ if (silent<2)
+ print_frontend_stats (frontend_fd, human_readable);
+
+ copy_to_file(dvr_fd,file_fd);
+
+ if (silent<2)
+ print_frontend_stats (frontend_fd, human_readable);
+ }
+ else {
+just_the_frontend_dude:
+ check_frontend (frontend_fd, human_readable);
+ }
close (audio_fd);
close (video_fd);
@@ -474,4 +695,3 @@ int main(int argc, char **argv)
return 0;
}
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 23:32:03 +0000