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-rw-r--r--util/scan/scan.c1928
1 files changed, 1928 insertions, 0 deletions
diff --git a/util/scan/scan.c b/util/scan/scan.c
new file mode 100644
index 0000000..30d77a5
--- /dev/null
+++ b/util/scan/scan.c
@@ -0,0 +1,1928 @@
+/**
+ * Simple MPEG parser to achieve network/service information.
+ *
+ * refered standards:
+ *
+ * ETSI EN 300 468
+ * ETSI TR 101 211
+ * ETSI ETR 211
+ * ITU-T H.222.0
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include <sys/poll.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <time.h>
+#include <errno.h>
+#include <signal.h>
+#include <assert.h>
+
+#include <linux/dvb/frontend.h>
+#include <linux/dvb/dmx.h>
+
+#include "list.h"
+#include "diseqc.h"
+#include "dump-zap.h"
+#include "dump-vdr.h"
+#include "scan.h"
+#include "lnb.h"
+
+
+static char demux_devname[80];
+
+static struct dvb_frontend_info fe_info = {
+ .type = -1
+};
+
+int verbosity = 2;
+
+static int long_timeout;
+static int current_tp_only;
+static int get_other_nits;
+static int vdr_dump_provider;
+static int vdr_dump_channum;
+static int ca_select = 1;
+static int serv_select = 7;
+static int vdr_version = 2;
+static struct lnb_types_st lnb_type;
+
+static enum fe_spectral_inversion spectral_inversion = INVERSION_AUTO;
+
+enum table_type {
+ PAT,
+ PMT,
+ SDT,
+ NIT
+};
+
+enum format {
+ OUTPUT_ZAP,
+ OUTPUT_VDR,
+ OUTPUT_PIDS
+};
+static enum format output_format = OUTPUT_ZAP;
+
+
+enum polarisation {
+ POLARISATION_HORIZONTAL = 0x00,
+ POLARISATION_VERTICAL = 0x01,
+ POLARISATION_CIRCULAR_LEFT = 0x02,
+ POLARISATION_CIRCULAR_RIGHT = 0x03
+};
+
+enum running_mode {
+ RM_NOT_RUNNING = 0x01,
+ RM_STARTS_SOON = 0x02,
+ RM_PAUSING = 0x03,
+ RM_RUNNING = 0x04
+};
+
+#define AUDIO_CHAN_MAX (32)
+#define CA_SYSTEM_ID_MAX (16)
+
+struct service {
+ struct list_head list;
+ int transport_stream_id;
+ int service_id;
+ char *provider_name;
+ char *service_name;
+ uint16_t pmt_pid;
+ uint16_t pcr_pid;
+ uint16_t video_pid;
+ uint16_t audio_pid[AUDIO_CHAN_MAX];
+ char audio_lang[AUDIO_CHAN_MAX][4];
+ int audio_num;
+ uint16_t ca_id[CA_SYSTEM_ID_MAX];
+ int ca_num;
+ uint16_t teletext_pid;
+ uint16_t subtitling_pid;
+ uint16_t ac3_pid;
+ unsigned int type : 8;
+ unsigned int scrambled : 1;
+ enum running_mode running;
+ void *priv;
+ int channel_num;
+};
+
+struct transponder {
+ struct list_head list;
+ struct list_head services;
+ int network_id;
+ int transport_stream_id;
+ enum fe_type type;
+ struct dvb_frontend_parameters param;
+ enum polarisation polarisation; /* only for DVB-S */
+ int orbital_pos; /* only for DVB-S */
+ unsigned int we_flag : 1; /* West/East Flag - only for DVB-S */
+ unsigned int scan_done : 1;
+ unsigned int last_tuning_failed : 1;
+ unsigned int other_frequency_flag : 1; /* DVB-T */
+ int n_other_f;
+ uint32_t *other_f; /* DVB-T freqeuency-list descriptor */
+};
+
+
+struct section_buf {
+ struct list_head list;
+ const char *dmx_devname;
+ unsigned int run_once : 1;
+ unsigned int segmented : 1; /* segmented by table_id_ext */
+ int fd;
+ int pid;
+ int table_id;
+ int table_id_ext;
+ int section_version_number;
+ uint8_t section_done[32];
+ int sectionfilter_done;
+ unsigned char buf[1024];
+ time_t timeout;
+ time_t start_time;
+ time_t running_time;
+ struct section_buf *next_seg; /* this is used to handle
+ * segmented tables (like NIT-other)
+ */
+};
+
+static LIST_HEAD(scanned_transponders);
+static LIST_HEAD(new_transponders);
+static struct transponder *current_tp;
+
+
+static void dump_dvb_parameters (FILE *f, struct transponder *p);
+
+static void setup_filter (struct section_buf* s, const char *dmx_devname,
+ int pid, int tid, int run_once, int segmented, int timeout);
+static void add_filter (struct section_buf *s);
+
+
+/* According to the DVB standards, the combination of network_id and
+ * transport_stream_id should be unique, but in real life the satellite
+ * operators and broadcasters don't care enough to coordinate
+ * the numbering. Thus we identify TPs by frequency (scan handles only
+ * one satellite at a time). Further complication: Different NITs on
+ * one satellite sometimes list the same TP with slightly different
+ * frequencies, so we have to search within some bandwidth.
+ */
+static struct transponder *alloc_transponder(uint32_t frequency)
+{
+ struct transponder *tp = calloc(1, sizeof(*tp));
+
+ tp->param.frequency = frequency;
+ INIT_LIST_HEAD(&tp->list);
+ INIT_LIST_HEAD(&tp->services);
+ list_add_tail(&tp->list, &new_transponders);
+ return tp;
+}
+
+static int is_same_transponder(uint32_t f1, uint32_t f2)
+{
+ uint32_t diff;
+ if (f1 == f2)
+ return 1;
+ diff = (f1 > f2) ? (f1 - f2) : (f2 - f1);
+ //FIXME: use symbolrate etc. to estimate bandwidth
+ if (diff < 2000) {
+ debug("f1 = %u is same TP as f2 = %u\n", f1, f2);
+ return 1;
+ }
+ return 0;
+}
+
+static struct transponder *find_transponder(uint32_t frequency)
+{
+ struct list_head *pos;
+ struct transponder *tp;
+
+ list_for_each(pos, &scanned_transponders) {
+ tp = list_entry(pos, struct transponder, list);
+ if (is_same_transponder(tp->param.frequency, frequency))
+ return tp;
+ }
+ list_for_each(pos, &new_transponders) {
+ tp = list_entry(pos, struct transponder, list);
+ if (is_same_transponder(tp->param.frequency, frequency))
+ return tp;
+ }
+ return NULL;
+}
+
+static void copy_transponder(struct transponder *d, struct transponder *s)
+{
+ d->network_id = s->network_id;
+ d->transport_stream_id = s->transport_stream_id;
+ d->type = s->type;
+ memcpy(&d->param, &s->param, sizeof(d->param));
+ d->polarisation = s->polarisation;
+ d->orbital_pos = s->orbital_pos;
+ d->we_flag = s->we_flag;
+ d->scan_done = s->scan_done;
+ d->last_tuning_failed = s->last_tuning_failed;
+ d->other_frequency_flag = s->other_frequency_flag;
+ d->n_other_f = s->n_other_f;
+ if (d->n_other_f) {
+ d->other_f = calloc(d->n_other_f, sizeof(uint32_t));
+ memcpy(d->other_f, s->other_f, d->n_other_f * sizeof(uint32_t));
+ }
+ else
+ d->other_f = NULL;
+}
+
+/* service_ids are guaranteed to be unique within one TP
+ * (the DVB standards say theay should be unique within one
+ * network, but in real life...)
+ */
+static struct service *alloc_service(struct transponder *tp, int service_id)
+{
+ struct service *s = calloc(1, sizeof(*s));
+ INIT_LIST_HEAD(&s->list);
+ s->service_id = service_id;
+ list_add_tail(&s->list, &tp->services);
+ return s;
+}
+
+static struct service *find_service(struct transponder *tp, int service_id)
+{
+ struct list_head *pos;
+ struct service *s;
+
+ list_for_each(pos, &tp->services) {
+ s = list_entry(pos, struct service, list);
+ if (s->service_id == service_id)
+ return s;
+ }
+ return NULL;
+}
+
+
+static void parse_ca_identifier_descriptor (const unsigned char *buf,
+ struct service *s)
+{
+ unsigned char len = buf [1];
+ int i;
+
+ buf += 2;
+
+ if (len > sizeof(s->ca_id)) {
+ len = sizeof(s->ca_id);
+ warning("too many CA system ids\n");
+ }
+ memcpy(s->ca_id, buf, len);
+ for (i = 0; i < len / sizeof(s->ca_id[0]); i++)
+ moreverbose(" CA ID 0x%04x\n", s->ca_id[i]);
+}
+
+
+static void parse_iso639_language_descriptor (const unsigned char *buf, struct service *s)
+{
+ unsigned char len = buf [1];
+
+ buf += 2;
+
+ if (len >= 4) {
+ debug(" LANG=%.3s %d\n", buf, buf[3]);
+ memcpy(s->audio_lang[s->audio_num], buf, 3);
+#if 0
+ /* seems like the audio_type is wrong all over the place */
+ //if (buf[3] == 0) -> normal
+ if (buf[3] == 1)
+ s->audio_lang[s->audio_num][3] = '!'; /* clean effects (no language) */
+ else if (buf[3] == 2)
+ s->audio_lang[s->audio_num][3] = '?'; /* for the hearing impaired */
+ else if (buf[3] == 3)
+ s->audio_lang[s->audio_num][3] = '+'; /* visually impaired commentary */
+#endif
+ }
+}
+
+static void parse_network_name_descriptor (const unsigned char *buf, void *dummy)
+{
+ unsigned char len = buf [1];
+
+ info("Network Name '%.*s'\n", len, buf + 2);
+}
+
+static void parse_terrestrial_uk_channel_number (const unsigned char *buf, void *dummy)
+{
+ int i, n, channel_num, service_id;
+ struct list_head *p1, *p2;
+ struct transponder *t;
+ struct service *s;
+
+ // 32 bits per record
+ n = buf[1] / 4;
+ if (n < 1)
+ return;
+
+ // desc id, desc len, (service id, service number)
+ buf += 2;
+ for (i = 0; i < n; i++) {
+ service_id = (buf[0]<<8)|(buf[1]&0xff);
+ channel_num = (buf[2]&0x03<<8)|(buf[3]&0xff);
+ debug("Service ID 0x%x has channel number %d ", service_id, channel_num);
+ list_for_each(p1, &scanned_transponders) {
+ t = list_entry(p1, struct transponder, list);
+ list_for_each(p2, &t->services) {
+ s = list_entry(p2, struct service, list);
+ if (s->service_id == service_id)
+ s->channel_num = channel_num;
+ }
+ }
+ buf += 4;
+ }
+}
+
+
+static long bcd32_to_cpu (const int b0, const int b1, const int b2, const int b3)
+{
+ return ((b0 >> 4) & 0x0f) * 10000000 + (b0 & 0x0f) * 1000000 +
+ ((b1 >> 4) & 0x0f) * 100000 + (b1 & 0x0f) * 10000 +
+ ((b2 >> 4) & 0x0f) * 1000 + (b2 & 0x0f) * 100 +
+ ((b3 >> 4) & 0x0f) * 10 + (b3 & 0x0f);
+}
+
+
+static const fe_code_rate_t fec_tab [8] = {
+ FEC_AUTO, FEC_1_2, FEC_2_3, FEC_3_4,
+ FEC_5_6, FEC_7_8, FEC_NONE, FEC_NONE
+};
+
+
+static const fe_modulation_t qam_tab [6] = {
+ QAM_AUTO, QAM_16, QAM_32, QAM_64, QAM_128, QAM_256
+};
+
+
+static void parse_cable_delivery_system_descriptor (const unsigned char *buf,
+ struct transponder *t)
+{
+ if (!t) {
+ warning("cable_delivery_system_descriptor outside transport stream definition (ignored)\n");
+ return;
+ }
+ t->type = FE_QAM;
+
+ t->param.frequency = bcd32_to_cpu (buf[2], buf[3], buf[4], buf[5]);
+ t->param.frequency *= 100;
+ t->param.u.qam.fec_inner = fec_tab[buf[12] & 0x07];
+ t->param.u.qam.symbol_rate = 10 * bcd32_to_cpu (buf[9],
+ buf[10],
+ buf[11],
+ buf[12] & 0xf0);
+ if ((buf[8] & 0x0f) > 5)
+ t->param.u.qam.modulation = QAM_AUTO;
+ else
+ t->param.u.qam.modulation = qam_tab[buf[8] & 0x0f];
+ t->param.inversion = spectral_inversion;
+
+ if (verbosity >= 5) {
+ debug("0x%#04x/0x%#04x ", t->network_id, t->transport_stream_id);
+ dump_dvb_parameters (stderr, t);
+ if (t->scan_done)
+ dprintf(5, " (done)");
+ if (t->last_tuning_failed)
+ dprintf(5, " (tuning failed)");
+ dprintf(5, "\n");
+ }
+}
+
+static void parse_satellite_delivery_system_descriptor (const unsigned char *buf,
+ struct transponder *t)
+{
+ if (!t) {
+ warning("satellite_delivery_system_descriptor outside transport stream definition (ignored)\n");
+ return;
+ }
+ t->type = FE_QPSK;
+ t->param.frequency = 10 * bcd32_to_cpu (buf[2], buf[3], buf[4], buf[5]);
+ t->param.u.qpsk.fec_inner = fec_tab[buf[12] & 0x07];
+ t->param.u.qpsk.symbol_rate = 10 * bcd32_to_cpu (buf[9],
+ buf[10],
+ buf[11],
+ buf[12] & 0xf0);
+
+ t->polarisation = (buf[8] >> 5) & 0x03;
+ t->param.inversion = spectral_inversion;
+
+ t->orbital_pos = bcd32_to_cpu (0x00, 0x00, buf[6], buf[7]);
+ t->we_flag = buf[8] >> 7;
+
+ if (verbosity >= 5) {
+ debug("0x%#04x/0x%#04x ", t->network_id, t->transport_stream_id);
+ dump_dvb_parameters (stderr, t);
+ if (t->scan_done)
+ dprintf(5, " (done)");
+ if (t->last_tuning_failed)
+ dprintf(5, " (tuning failed)");
+ dprintf(5, "\n");
+ }
+}
+
+
+static void parse_terrestrial_delivery_system_descriptor (const unsigned char *buf,
+ struct transponder *t)
+{
+ static const fe_modulation_t m_tab [] = { QPSK, QAM_16, QAM_64, QAM_AUTO };
+ static const fe_code_rate_t ofec_tab [8] = { FEC_1_2, FEC_2_3, FEC_3_4,
+ FEC_5_6, FEC_7_8 };
+ struct dvb_ofdm_parameters *o;
+
+ if (!t) {
+ warning("terrestrial_delivery_system_descriptor outside transport stream definition (ignored)\n");
+ return;
+ }
+ o = &t->param.u.ofdm;
+ t->type = FE_OFDM;
+
+ t->param.frequency = (buf[2] << 24) | (buf[3] << 16);
+ t->param.frequency |= (buf[4] << 8) | buf[5];
+ t->param.frequency *= 10;
+ t->param.inversion = spectral_inversion;
+
+ o->bandwidth = BANDWIDTH_8_MHZ + ((buf[6] >> 5) & 0x3);
+ o->constellation = m_tab[(buf[7] >> 6) & 0x3];
+ o->hierarchy_information = HIERARCHY_NONE + ((buf[7] >> 3) & 0x3);
+
+ if ((buf[7] & 0x7) > 4)
+ o->code_rate_HP = FEC_AUTO;
+ else
+ o->code_rate_HP = ofec_tab [buf[7] & 0x7];
+
+ if (((buf[8] >> 5) & 0x7) > 4)
+ o->code_rate_LP = FEC_AUTO;
+ else
+ o->code_rate_LP = ofec_tab [(buf[8] >> 5) & 0x7];
+
+ o->guard_interval = GUARD_INTERVAL_1_32 + ((buf[8] >> 3) & 0x3);
+
+ o->transmission_mode = (buf[8] & 0x2) ?
+ TRANSMISSION_MODE_8K :
+ TRANSMISSION_MODE_2K;
+
+ t->other_frequency_flag = (buf[8] & 0x01);
+
+ if (verbosity >= 5) {
+ debug("0x%#04x/0x%#04x ", t->network_id, t->transport_stream_id);
+ dump_dvb_parameters (stderr, t);
+ if (t->scan_done)
+ dprintf(5, " (done)");
+ if (t->last_tuning_failed)
+ dprintf(5, " (tuning failed)");
+ dprintf(5, "\n");
+ }
+}
+
+static void parse_frequency_list_descriptor (const unsigned char *buf,
+ struct transponder *t)
+{
+ int n, i;
+ typeof(*t->other_f) f;
+
+ if (!t) {
+ warning("frequency_list_descriptor outside transport stream definition (ignored)\n");
+ return;
+ }
+ if (t->other_f)
+ return;
+
+ n = (buf[1] - 1) / 4;
+ if (n < 1 || (buf[2] & 0x03) != 3)
+ return;
+
+ t->other_f = calloc(n, sizeof(*t->other_f));
+ t->n_other_f = n;
+ buf += 3;
+ for (i = 0; i < n; i++) {
+ f = (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
+ t->other_f[i] = f * 10;
+ buf += 4;
+ }
+}
+
+static void parse_service_descriptor (const unsigned char *buf, struct service *s)
+{
+ unsigned char len;
+ unsigned char *src, *dest;
+
+ s->type = buf[2];
+
+ buf += 3;
+ len = *buf;
+ buf++;
+
+ if (s->provider_name)
+ free (s->provider_name);
+
+ s->provider_name = malloc (len + 1);
+ memcpy (s->provider_name, buf, len);
+ s->provider_name[len] = '\0';
+
+ /* remove control characters (FIXME: handle short/long name) */
+ /* FIXME: handle character set correctly (e.g. via iconv)
+ * c.f. EN 300 468 annex A */
+ for (src = dest = s->provider_name; *src; src++)
+ if (*src >= 0x20 && (*src < 0x80 || *src > 0x9f))
+ *dest++ = *src;
+ *dest = '\0';
+ if (!s->provider_name[0]) {
+ /* zap zero length names */
+ free (s->provider_name);
+ s->provider_name = 0;
+ }
+
+ if (s->service_name)
+ free (s->service_name);
+
+ buf += len;
+ len = *buf;
+ buf++;
+
+ s->service_name = malloc (len + 1);
+ memcpy (s->service_name, buf, len);
+ s->service_name[len] = '\0';
+
+ /* remove control characters (FIXME: handle short/long name) */
+ /* FIXME: handle character set correctly (e.g. via iconv)
+ * c.f. EN 300 468 annex A */
+ for (src = dest = s->service_name; *src; src++)
+ if (*src >= 0x20 && (*src < 0x80 || *src > 0x9f))
+ *dest++ = *src;
+ *dest = '\0';
+ if (!s->service_name[0]) {
+ /* zap zero length names */
+ free (s->service_name);
+ s->service_name = 0;
+ }
+
+ info("0x%04x 0x%04x: pmt_pid 0x%04x %s -- %s (%s%s)\n",
+ s->transport_stream_id,
+ s->service_id,
+ s->pmt_pid,
+ s->provider_name, s->service_name,
+ s->running == RM_NOT_RUNNING ? "not running" :
+ s->running == RM_STARTS_SOON ? "starts soon" :
+ s->running == RM_PAUSING ? "pausing" :
+ s->running == RM_RUNNING ? "running" : "???",
+ s->scrambled ? ", scrambled" : "");
+}
+
+static int find_descriptor(uint8_t tag, const unsigned char *buf,
+ int descriptors_loop_len,
+ const unsigned char **desc, int *desc_len)
+{
+ while (descriptors_loop_len > 0) {
+ unsigned char descriptor_tag = buf[0];
+ unsigned char descriptor_len = buf[1] + 2;
+
+ if (!descriptor_len) {
+ warning("descriptor_tag == 0x%02x, len is 0\n", descriptor_tag);
+ break;
+ }
+
+ if (tag == descriptor_tag) {
+ if (desc)
+ *desc = buf;
+ if (desc_len)
+ *desc_len = descriptor_len;
+ return 1;
+ }
+
+ buf += descriptor_len;
+ descriptors_loop_len -= descriptor_len;
+ }
+ return 0;
+}
+
+static void parse_descriptors(enum table_type t, const unsigned char *buf,
+ int descriptors_loop_len, void *data)
+{
+ while (descriptors_loop_len > 0) {
+ unsigned char descriptor_tag = buf[0];
+ unsigned char descriptor_len = buf[1] + 2;
+
+ if (!descriptor_len) {
+ warning("descriptor_tag == 0x%02x, len is 0\n", descriptor_tag);
+ break;
+ }
+
+ switch (descriptor_tag) {
+ case 0x0a:
+ if (t == PMT)
+ parse_iso639_language_descriptor (buf, data);
+ break;
+
+ case 0x40:
+ if (t == NIT)
+ parse_network_name_descriptor (buf, data);
+ break;
+
+ case 0x43:
+ if (t == NIT)
+ parse_satellite_delivery_system_descriptor (buf, data);
+ break;
+
+ case 0x44:
+ if (t == NIT)
+ parse_cable_delivery_system_descriptor (buf, data);
+ break;
+
+ case 0x48:
+ if (t == SDT)
+ parse_service_descriptor (buf, data);
+ break;
+
+ case 0x53:
+ if (t == SDT)
+ parse_ca_identifier_descriptor (buf, data);
+ break;
+
+ case 0x5a:
+ if (t == NIT)
+ parse_terrestrial_delivery_system_descriptor (buf, data);
+ break;
+
+ case 0x62:
+ if (t == NIT)
+ parse_frequency_list_descriptor (buf, data);
+ break;
+
+ case 0x83:
+ /* 0x83 is in the privately defined range of descriptor tags,
+ * so we parse this only if the user says so to avoid
+ * problems when 0x83 is something entirely different... */
+ if (t == NIT && vdr_dump_channum)
+ parse_terrestrial_uk_channel_number (buf, data);
+ break;
+
+ default:
+ verbosedebug("skip descriptor 0x%02x\n", descriptor_tag);
+ };
+
+ buf += descriptor_len;
+ descriptors_loop_len -= descriptor_len;
+ }
+}
+
+
+static void parse_pat(const unsigned char *buf, int section_length,
+ int transport_stream_id)
+{
+ while (section_length > 0) {
+ struct service *s;
+ int service_id = (buf[0] << 8) | buf[1];
+
+ if (service_id == 0) {
+ buf += 4; /* skip nit pid entry... */
+ section_length -= 4;
+ continue;
+ }
+ /* SDT might have been parsed first... */
+ s = find_service(current_tp, service_id);
+ if (!s)
+ s = alloc_service(current_tp, service_id);
+ s->pmt_pid = ((buf[2] & 0x1f) << 8) | buf[3];
+ if (!s->priv && s->pmt_pid) {
+ s->priv = malloc(sizeof(struct section_buf));
+ setup_filter(s->priv, demux_devname,
+ s->pmt_pid, 0x02, 1, 0, 5);
+
+ add_filter (s->priv);
+ }
+
+ buf += 4;
+ section_length -= 4;
+ };
+}
+
+
+static void parse_pmt (const unsigned char *buf, int section_length, int service_id)
+{
+ int program_info_len;
+ struct service *s;
+ char msg_buf[14 * AUDIO_CHAN_MAX + 1];
+ char *tmp;
+ int i;
+
+ s = find_service (current_tp, service_id);
+ if (!s) {
+ error("PMT for serivce_id 0x%04x was not in PAT\n", service_id);
+ return;
+ }
+
+ s->pcr_pid = ((buf[0] & 0x1f) << 8) | buf[1];
+
+ program_info_len = ((buf[2] & 0x0f) << 8) | buf[3];
+
+ buf += program_info_len + 4;
+ section_length -= program_info_len + 4;
+
+ while (section_length > 0) {
+ int ES_info_len = ((buf[3] & 0x0f) << 8) | buf[4];
+ int elementary_pid = ((buf[1] & 0x1f) << 8) | buf[2];
+
+ switch (buf[0]) {
+ case 0x01:
+ case 0x02:
+ moreverbose(" VIDEO : PID 0x%04x\n", elementary_pid);
+ if (s->video_pid == 0)
+ s->video_pid = elementary_pid;
+ break;
+ case 0x03:
+ case 0x04:
+ moreverbose(" AUDIO : PID 0x%04x\n", elementary_pid);
+ if (s->audio_num < AUDIO_CHAN_MAX) {
+ s->audio_pid[s->audio_num] = elementary_pid;
+ parse_descriptors (PMT, buf + 5, ES_info_len, s);
+ s->audio_num++;
+ }
+ else
+ warning("more than %i audio channels, truncating\n",
+ AUDIO_CHAN_MAX);
+ break;
+ case 0x06:
+ if (find_descriptor(0x56, buf + 5, ES_info_len, NULL, NULL)) {
+ moreverbose(" TELETEXT : PID 0x%04x\n", elementary_pid);
+ s->teletext_pid = elementary_pid;
+ break;
+ }
+ else if (find_descriptor(0x59, buf + 5, ES_info_len, NULL, NULL)) {
+ /* Note: The subtitling descriptor can also signal
+ * teletext subtitling, but then the teletext descriptor
+ * will also be present; so we can be quite confident
+ * that we catch DVB subtitling streams only here, w/o
+ * parsing the descriptor. */
+ moreverbose(" SUBTITLING: PID 0x%04x\n", elementary_pid);
+ s->subtitling_pid = elementary_pid;
+ break;
+ }
+ else if (find_descriptor(0x6a, buf + 5, ES_info_len, NULL, NULL)) {
+ moreverbose(" AC3 : PID 0x%04x\n", elementary_pid);
+ s->ac3_pid = elementary_pid;
+ break;
+ }
+ /* fall through */
+ default:
+ moreverbose(" OTHER : PID 0x%04x TYPE 0x%02x\n", elementary_pid, buf[0]);
+ };
+
+ buf += ES_info_len + 5;
+ section_length -= ES_info_len + 5;
+ };
+
+
+ tmp = msg_buf;
+ tmp += sprintf(tmp, "0x%04x (%.4s)", s->audio_pid[0], s->audio_lang[0]);
+
+ if (s->audio_num > AUDIO_CHAN_MAX) {
+ warning("more than %i audio channels: %i, truncating to %i\n",
+ AUDIO_CHAN_MAX, s->audio_num, AUDIO_CHAN_MAX);
+ s->audio_num = AUDIO_CHAN_MAX;
+ }
+
+ for (i=1; i<s->audio_num; i++)
+ tmp += sprintf(tmp, ", 0x%04x (%.4s)", s->audio_pid[i], s->audio_lang[i]);
+
+ debug("0x%04x 0x%04x: %s -- %s, pmt_pid 0x%04x, vpid 0x%04x, apid %s\n",
+ s->transport_stream_id,
+ s->service_id,
+ s->provider_name, s->service_name,
+ s->pmt_pid, s->video_pid, msg_buf);
+}
+
+
+static void parse_nit (const unsigned char *buf, int section_length, int network_id)
+{
+ int descriptors_loop_len = ((buf[0] & 0x0f) << 8) | buf[1];
+
+ if (section_length < descriptors_loop_len + 4)
+ {
+ warning("section too short: network_id == 0x%04x, section_length == %i, "
+ "descriptors_loop_len == %i\n",
+ network_id, section_length, descriptors_loop_len);
+ return;
+ }
+
+ parse_descriptors (NIT, buf + 2, descriptors_loop_len, NULL);
+
+ section_length -= descriptors_loop_len + 4;
+ buf += descriptors_loop_len + 4;
+
+ while (section_length > 6) {
+ int transport_stream_id = (buf[0] << 8) | buf[1];
+ struct transponder *t, tn;
+
+ descriptors_loop_len = ((buf[4] & 0x0f) << 8) | buf[5];
+
+ if (section_length < descriptors_loop_len + 4)
+ {
+ warning("section too short: transport_stream_id == 0x%04x, "
+ "section_length == %i, descriptors_loop_len == %i\n",
+ transport_stream_id, section_length,
+ descriptors_loop_len);
+ break;
+ }
+
+ debug("transport_stream_id 0x%04x\n", transport_stream_id);
+
+ memset(&tn, 0, sizeof(tn));
+ tn.type = -1;
+ tn.network_id = network_id;
+ tn.transport_stream_id = transport_stream_id;
+
+ parse_descriptors (NIT, buf + 6, descriptors_loop_len, &tn);
+
+ if (tn.type == fe_info.type) {
+ /* only add if develivery_descriptor matches FE type */
+ t = find_transponder(tn.param.frequency);
+ if (!t)
+ t = alloc_transponder(tn.param.frequency);
+ copy_transponder(t, &tn);
+ }
+
+ section_length -= descriptors_loop_len + 6;
+ buf += descriptors_loop_len + 6;
+ };
+}
+
+
+static void parse_sdt (const unsigned char *buf, int section_length,
+ int transport_stream_id)
+{
+ buf += 3; /* skip original network id + reserved field */
+
+ while (section_length > 4) {
+ int service_id = (buf[0] << 8) | buf[1];
+ int descriptors_loop_len = ((buf[3] & 0x0f) << 8) | buf[4];
+ struct service *s;
+
+ if (section_length < descriptors_loop_len || !descriptors_loop_len)
+ {
+ warning("section too short: service_id == 0x%02x, section_length == %i, "
+ "descriptors_loop_len == %i\n",
+ service_id, section_length,
+ descriptors_loop_len);
+ break;
+ }
+
+ s = find_service(current_tp, service_id);
+ if (!s)
+ /* maybe PAT has not yet been parsed... */
+ s = alloc_service(current_tp, service_id);
+
+ s->running = (buf[3] >> 5) & 0x7;
+ s->scrambled = (buf[3] >> 4) & 1;
+
+ parse_descriptors (SDT, buf + 5, descriptors_loop_len, s);
+
+ section_length -= descriptors_loop_len + 5;
+ buf += descriptors_loop_len + 5;
+ };
+}
+
+
+static int get_bit (uint8_t *bitfield, int bit)
+{
+ return (bitfield[bit/8] >> (bit % 8)) & 1;
+}
+
+static void set_bit (uint8_t *bitfield, int bit)
+{
+ bitfield[bit/8] |= 1 << (bit % 8);
+}
+
+
+/**
+ * returns 0 when more sections are expected
+ * 1 when all sections are read on this pid
+ * -1 on invalid table id
+ */
+static int parse_section (struct section_buf *s)
+{
+ const unsigned char *buf = s->buf;
+ int table_id;
+ int section_length;
+ int table_id_ext;
+ int section_version_number;
+ int section_number;
+ int last_section_number;
+ int i;
+
+ table_id = buf[0];
+
+ if (s->table_id != table_id)
+ return -1;
+
+ section_length = (((buf[1] & 0x0f) << 8) | buf[2]) - 11;
+
+ table_id_ext = (buf[3] << 8) | buf[4];
+ section_version_number = (buf[5] >> 1) & 0x1f;
+ section_number = buf[6];
+ last_section_number = buf[7];
+
+ if (s->segmented && s->table_id_ext != -1 && s->table_id_ext != table_id_ext) {
+ /* find or allocate actual section_buf matching table_id_ext */
+ while (s->next_seg) {
+ s = s->next_seg;
+ if (s->table_id_ext == table_id_ext)
+ break;
+ }
+ if (s->table_id_ext != table_id_ext) {
+ assert(s->next_seg == NULL);
+ s->next_seg = calloc(1, sizeof(struct section_buf));
+ s->next_seg->segmented = s->segmented;
+ s->next_seg->run_once = s->run_once;
+ s->next_seg->timeout = s->timeout;
+ s = s->next_seg;
+ s->table_id = table_id;
+ s->table_id_ext = table_id_ext;
+ s->section_version_number = section_version_number;
+ }
+ }
+
+ if (s->section_version_number != section_version_number ||
+ s->table_id_ext != table_id_ext) {
+ struct section_buf *next_seg = s->next_seg;
+
+ if (s->section_version_number != -1 && s->table_id_ext != -1)
+ debug("section version_number or table_id_ext changed "
+ "%d -> %d / %04x -> %04x\n",
+ s->section_version_number, section_version_number,
+ s->table_id_ext, table_id_ext);
+ s->table_id_ext = table_id_ext;
+ s->section_version_number = section_version_number;
+ s->sectionfilter_done = 0;
+ memset (s->section_done, 0, sizeof(s->section_done));
+ s->next_seg = next_seg;
+ }
+
+ buf += 8;
+
+ if (!get_bit(s->section_done, section_number)) {
+ set_bit (s->section_done, section_number);
+
+ debug("pid 0x%02x tid 0x%02x table_id_ext 0x%04x, "
+ "%i/%i (version %i)\n",
+ s->pid, table_id, table_id_ext, section_number,
+ last_section_number, section_version_number);
+
+ switch (table_id) {
+ case 0x00:
+ verbose("PAT\n");
+ parse_pat (buf, section_length, table_id_ext);
+ break;
+
+ case 0x02:
+ verbose("PMT 0x%04x for service 0x%04x\n", s->pid, table_id_ext);
+ parse_pmt (buf, section_length, table_id_ext);
+ break;
+
+ case 0x41:
+ verbose("////////////////////////////////////////////// NIT other\n");
+ case 0x40:
+ verbose("NIT (%s TS)\n", table_id == 0x40 ? "actual":"other");
+ parse_nit (buf, section_length, table_id_ext);
+ break;
+
+ case 0x42:
+ case 0x46:
+ verbose("SDT (%s TS)\n", table_id == 0x42 ? "actual":"other");
+ parse_sdt (buf, section_length, table_id_ext);
+ break;
+
+ default:
+ ;
+ };
+
+ for (i = 0; i <= last_section_number; i++)
+ if (get_bit (s->section_done, i) == 0)
+ break;
+
+ if (i > last_section_number)
+ s->sectionfilter_done = 1;
+ }
+
+ if (s->segmented) {
+ /* always wait for timeout; this is because we don't now how
+ * many segments there are
+ */
+ return 0;
+ }
+ else if (s->sectionfilter_done)
+ return 1;
+
+ return 0;
+}
+
+
+static int read_sections (struct section_buf *s)
+{
+ int section_length, count;
+
+ if (s->sectionfilter_done && !s->segmented)
+ return 1;
+
+ /* the section filter API guarantess that we get one full section
+ * per read(), provided that the buffer is large enough (it is)
+ */
+ if (((count = read (s->fd, s->buf, sizeof(s->buf))) < 0) && errno == EOVERFLOW)
+ count = read (s->fd, s->buf, sizeof(s->buf));
+ if (count < 0) {
+ errorn("read_sections: read error");
+ return -1;
+ }
+
+ if (count < 4)
+ return -1;
+
+ section_length = ((s->buf[1] & 0x0f) << 8) | s->buf[2];
+
+ if (count != section_length + 3)
+ return -1;
+
+ if (parse_section(s) == 1)
+ return 1;
+
+ return 0;
+}
+
+
+static LIST_HEAD(running_filters);
+static LIST_HEAD(waiting_filters);
+static int n_running;
+#define MAX_RUNNING 32
+static struct pollfd poll_fds[MAX_RUNNING];
+static struct section_buf* poll_section_bufs[MAX_RUNNING];
+
+
+static void setup_filter (struct section_buf* s, const char *dmx_devname,
+ int pid, int tid, int run_once, int segmented, int timeout)
+{
+ memset (s, 0, sizeof(struct section_buf));
+
+ s->fd = -1;
+ s->dmx_devname = dmx_devname;
+ s->pid = pid;
+ s->table_id = tid;
+
+ s->run_once = run_once;
+ s->segmented = segmented;
+
+ if (long_timeout)
+ s->timeout = 5 * timeout;
+ else
+ s->timeout = timeout;
+
+ s->table_id_ext = -1;
+ s->section_version_number = -1;
+
+ INIT_LIST_HEAD (&s->list);
+}
+
+static void update_poll_fds(void)
+{
+ struct list_head *p;
+ struct section_buf* s;
+ int i;
+
+ memset(poll_section_bufs, 0, sizeof(poll_section_bufs));
+ for (i = 0; i < MAX_RUNNING; i++)
+ poll_fds[i].fd = -1;
+ i = 0;
+ list_for_each (p, &running_filters) {
+ if (i >= MAX_RUNNING)
+ fatal("too many poll_fds\n");
+ s = list_entry (p, struct section_buf, list);
+ if (s->fd == -1)
+ fatal("s->fd == -1 on running_filters\n");
+ verbosedebug("poll fd %d\n", s->fd);
+ poll_fds[i].fd = s->fd;
+ poll_fds[i].events = POLLIN;
+ poll_fds[i].revents = 0;
+ poll_section_bufs[i] = s;
+ i++;
+ }
+ if (i != n_running)
+ fatal("n_running is hosed\n");
+}
+
+static int start_filter (struct section_buf* s)
+{
+ struct dmx_sct_filter_params f;
+
+ if (n_running >= MAX_RUNNING)
+ goto err0;
+ if ((s->fd = open (s->dmx_devname, O_RDWR | O_NONBLOCK)) < 0)
+ goto err0;
+
+ verbosedebug("start filter pid 0x%04x table_id 0x%02x\n", s->pid, s->table_id);
+
+ memset(&f, 0, sizeof(f));
+
+ f.pid = (uint16_t) s->pid;
+
+ if (s->table_id < 0x100 && s->table_id > 0) {
+ f.filter.filter[0] = (uint8_t) s->table_id;
+ f.filter.mask[0] = 0xff;
+ }
+
+ f.timeout = 0;
+ f.flags = DMX_IMMEDIATE_START | DMX_CHECK_CRC;
+
+ if (ioctl(s->fd, DMX_SET_FILTER, &f) == -1) {
+ errorn ("ioctl DMX_SET_FILTER failed");
+ goto err1;
+ }
+
+ s->sectionfilter_done = 0;
+ time(&s->start_time);
+
+ list_del_init (&s->list); /* might be in waiting filter list */
+ list_add (&s->list, &running_filters);
+
+ n_running++;
+ update_poll_fds();
+
+ return 0;
+
+err1:
+ ioctl (s->fd, DMX_STOP);
+ close (s->fd);
+err0:
+ return -1;
+}
+
+
+static void stop_filter (struct section_buf *s)
+{
+ verbosedebug("stop filter pid 0x%04x\n", s->pid);
+ ioctl (s->fd, DMX_STOP);
+ close (s->fd);
+ s->fd = -1;
+ list_del (&s->list);
+ s->running_time += time(NULL) - s->start_time;
+
+ n_running--;
+ update_poll_fds();
+}
+
+
+static void add_filter (struct section_buf *s)
+{
+ verbosedebug("add filter pid 0x%04x\n", s->pid);
+ if (start_filter (s))
+ list_add_tail (&s->list, &waiting_filters);
+}
+
+
+static void remove_filter (struct section_buf *s)
+{
+ verbosedebug("remove filter pid 0x%04x\n", s->pid);
+ stop_filter (s);
+
+ while (!list_empty(&waiting_filters)) {
+ struct list_head *next = waiting_filters.next;
+ s = list_entry (next, struct section_buf, list);
+ if (start_filter (s))
+ break;
+ };
+}
+
+
+static void read_filters (void)
+{
+ struct section_buf *s;
+ int i, n, done;
+
+ n = poll(poll_fds, n_running, 1000);
+ if (n == -1)
+ errorn("poll");
+
+ for (i = 0; i < n_running; i++) {
+ s = poll_section_bufs[i];
+ if (!s)
+ fatal("poll_section_bufs[%d] is NULL\n", i);
+ if (poll_fds[i].revents)
+ done = read_sections (s) == 1;
+ else
+ done = 0; /* timeout */
+ if (done || time(NULL) > s->start_time + s->timeout) {
+ if (s->run_once) {
+ if (done)
+ verbosedebug("filter done pid 0x%04x\n", s->pid);
+ else
+ warning("filter timeout pid 0x%04x\n", s->pid);
+ remove_filter (s);
+ }
+ }
+ }
+}
+
+
+static int mem_is_zero (const void *mem, int size)
+{
+ const char *p = mem;
+ unsigned long i;
+
+ for (i=0; i<size; i++) {
+ if (p[i] != 0x00)
+ return 0;
+ }
+
+ return 1;
+}
+
+
+static int switch_pos = 0;
+
+static int __tune_to_transponder (int frontend_fd, struct transponder *t)
+{
+ struct dvb_frontend_parameters p;
+ fe_status_t s;
+ int i;
+
+ current_tp = t;
+
+ if (mem_is_zero (&t->param, sizeof(struct dvb_frontend_parameters)))
+ return -1;
+
+ memcpy (&p, &t->param, sizeof(struct dvb_frontend_parameters));
+
+ if (verbosity >= 1) {
+ dprintf(1, ">>> tune to: ");
+ dump_dvb_parameters (stderr, t);
+ if (t->last_tuning_failed)
+ dprintf(1, " (tuning failed)");
+ dprintf(1, "\n");
+ }
+
+ if (t->type == FE_QPSK) {
+ int hiband = 0;
+
+ if (lnb_type.switch_val && lnb_type.high_val &&
+ p.frequency >= lnb_type.switch_val)
+ hiband = 1;
+
+ setup_switch (frontend_fd,
+ switch_pos,
+ t->polarisation == POLARISATION_VERTICAL ? 0 : 1,
+ hiband);
+ usleep(50000);
+ if (hiband)
+ p.frequency = abs(p.frequency - lnb_type.high_val);
+ else
+ p.frequency = abs(p.frequency - lnb_type.low_val);
+ }
+
+ if (ioctl(frontend_fd, FE_SET_FRONTEND, &p) == -1) {
+ errorn("Setting frontend parameters failed");
+ return -1;
+ }
+
+ for (i = 0; i < 10; i++) {
+ usleep (200000);
+
+ if (ioctl(frontend_fd, FE_READ_STATUS, &s) == -1) {
+ errorn("FE_READ_STATUS failed");
+ return -1;
+ }
+
+ verbose(">>> tuning status == 0x%02x\n", s);
+
+ if (s & FE_HAS_LOCK) {
+ t->last_tuning_failed = 0;
+ return 0;
+ }
+ }
+
+ warning(">>> tuning failed!!!\n");
+
+ t->last_tuning_failed = 1;
+
+ return -1;
+}
+
+static int tune_to_transponder (int frontend_fd, struct transponder *t)
+{
+ /* move TP from "new" to "scanned" list */
+ list_del_init(&t->list);
+ list_add_tail(&t->list, &scanned_transponders);
+ t->scan_done = 1;
+
+ if (t->type != fe_info.type) {
+ /* ignore cable descriptors in sat NIT and vice versa */
+ t->last_tuning_failed = 1;
+ return -1;
+ }
+
+ if (__tune_to_transponder (frontend_fd, t) == 0)
+ return 0;
+
+ return __tune_to_transponder (frontend_fd, t);
+}
+
+
+static int tune_to_next_transponder (int frontend_fd)
+{
+ struct list_head *pos, *tmp;
+ struct transponder *t;
+
+ list_for_each_safe(pos, tmp, &new_transponders) {
+ t = list_entry (pos, struct transponder, list);
+retry:
+ if (tune_to_transponder (frontend_fd, t) == 0)
+ return 0;
+ if (t->other_frequency_flag &&
+ t->other_f &&
+ t->n_other_f) {
+ t->param.frequency = t->other_f[t->n_other_f - 1];
+ t->n_other_f--;
+ info("retrying with f=%d\n", t->param.frequency);
+ goto retry;
+ }
+ }
+ return -1;
+}
+
+struct strtab {
+ const char *str;
+ int val;
+};
+static int str2enum(const char *str, const struct strtab *tab, int deflt)
+{
+ while (tab->str) {
+ if (!strcmp(tab->str, str))
+ return tab->val;
+ tab++;
+ }
+ error("invalid enum value '%s'\n", str);
+ return deflt;
+}
+
+static enum fe_code_rate str2fec(const char *fec)
+{
+ struct strtab fectab[] = {
+ { "NONE", FEC_NONE },
+ { "1/2", FEC_1_2 },
+ { "2/3", FEC_2_3 },
+ { "3/4", FEC_3_4 },
+ { "4/5", FEC_4_5 },
+ { "5/6", FEC_5_6 },
+ { "6/7", FEC_6_7 },
+ { "7/8", FEC_7_8 },
+ { "8/9", FEC_8_9 },
+ { "AUTO", FEC_AUTO },
+ { NULL, 0 }
+ };
+ return str2enum(fec, fectab, FEC_AUTO);
+}
+
+static enum fe_modulation str2qam(const char *qam)
+{
+ struct strtab qamtab[] = {
+ { "QPSK", QPSK },
+ { "QAM16", QAM_16 },
+ { "QAM32", QAM_32 },
+ { "QAM64", QAM_64 },
+ { "QAM128", QAM_128 },
+ { "QAM256", QAM_256 },
+ { "AUTO", QAM_AUTO },
+ { NULL, 0 }
+ };
+ return str2enum(qam, qamtab, QAM_AUTO);
+}
+
+static enum fe_bandwidth str2bandwidth(const char *bw)
+{
+ struct strtab bwtab[] = {
+ { "8MHz", BANDWIDTH_8_MHZ },
+ { "7MHz", BANDWIDTH_7_MHZ },
+ { "6MHz", BANDWIDTH_6_MHZ },
+ { "AUTO", BANDWIDTH_AUTO },
+ { NULL, 0 }
+ };
+ return str2enum(bw, bwtab, BANDWIDTH_AUTO);
+}
+
+static enum fe_transmit_mode str2mode(const char *mode)
+{
+ struct strtab modetab[] = {
+ { "2k", TRANSMISSION_MODE_2K },
+ { "8k", TRANSMISSION_MODE_8K },
+ { "AUTO", TRANSMISSION_MODE_AUTO },
+ { NULL, 0 }
+ };
+ return str2enum(mode, modetab, TRANSMISSION_MODE_AUTO);
+}
+
+static enum fe_guard_interval str2guard(const char *guard)
+{
+ struct strtab guardtab[] = {
+ { "1/32", GUARD_INTERVAL_1_32 },
+ { "1/16", GUARD_INTERVAL_1_16 },
+ { "1/8", GUARD_INTERVAL_1_8 },
+ { "1/4", GUARD_INTERVAL_1_4 },
+ { "AUTO", GUARD_INTERVAL_AUTO },
+ { NULL, 0 }
+ };
+ return str2enum(guard, guardtab, GUARD_INTERVAL_AUTO);
+}
+
+static enum fe_hierarchy str2hier(const char *hier)
+{
+ struct strtab hiertab[] = {
+ { "NONE", HIERARCHY_NONE },
+ { "1", HIERARCHY_1 },
+ { "2", HIERARCHY_2 },
+ { "4", HIERARCHY_4 },
+ { "AUTO", HIERARCHY_AUTO },
+ { NULL, 0 }
+ };
+ return str2enum(hier, hiertab, HIERARCHY_AUTO);
+}
+
+static int tune_initial (int frontend_fd, const char *initial)
+{
+ FILE *inif;
+ unsigned int f, sr;
+ char buf[200];
+ char pol[20], fec[20], qam[20], bw[20], fec2[20], mode[20], guard[20], hier[20];
+ struct transponder *t;
+
+ inif = fopen(initial, "r");
+ if (!inif) {
+ error("cannot open '%s': %d %m\n", initial, errno);
+ return -1;
+ }
+ while (fgets(buf, sizeof(buf), inif)) {
+ if (buf[0] == '#' || buf[0] == '\n')
+ ;
+ else if (sscanf(buf, "S %u %1[HVLR] %u %4s\n", &f, pol, &sr, fec) == 4) {
+ t = alloc_transponder(f);
+ t->type = FE_QPSK;
+ switch(pol[0]) {
+ case 'H':
+ case 'L':
+ t->polarisation = POLARISATION_HORIZONTAL;
+ break;
+ default:
+ t->polarisation = POLARISATION_VERTICAL;;
+ break;
+ }
+ t->param.inversion = spectral_inversion;
+ t->param.u.qpsk.symbol_rate = sr;
+ t->param.u.qpsk.fec_inner = str2fec(fec);
+ info("initial transponder %u %c %u %d\n",
+ t->param.frequency,
+ pol[0], sr,
+ t->param.u.qpsk.fec_inner);
+ }
+ else if (sscanf(buf, "C %u %u %4s %6s\n", &f, &sr, fec, qam) == 4) {
+ t = alloc_transponder(f);
+ t->type = FE_QAM;
+ t->param.inversion = spectral_inversion;
+ t->param.u.qam.symbol_rate = sr;
+ t->param.u.qam.fec_inner = str2fec(fec);
+ t->param.u.qam.modulation = str2qam(qam);
+ info("initial transponder %u %u %d %d\n",
+ t->param.frequency,
+ sr,
+ t->param.u.qam.fec_inner,
+ t->param.u.qam.modulation);
+ }
+ else if (sscanf(buf, "T %u %4s %4s %4s %7s %4s %4s %4s\n",
+ &f, bw, fec, fec2, qam, mode, guard, hier) == 8) {
+ t = alloc_transponder(f);
+ t->type = FE_OFDM;
+ t->param.inversion = spectral_inversion;
+ t->param.u.ofdm.bandwidth = str2bandwidth(bw);
+ t->param.u.ofdm.code_rate_HP = str2fec(fec);
+ t->param.u.ofdm.code_rate_LP = str2fec(fec2);
+ t->param.u.ofdm.constellation = str2qam(qam);
+ t->param.u.ofdm.transmission_mode = str2mode(mode);
+ t->param.u.ofdm.guard_interval = str2guard(guard);
+ t->param.u.ofdm.hierarchy_information = str2hier(hier);
+ info("initial transponder %u %d %d %d %d %d %d %d\n",
+ t->param.frequency,
+ t->param.u.ofdm.bandwidth,
+ t->param.u.ofdm.code_rate_HP,
+ t->param.u.ofdm.code_rate_LP,
+ t->param.u.ofdm.constellation,
+ t->param.u.ofdm.transmission_mode,
+ t->param.u.ofdm.guard_interval,
+ t->param.u.ofdm.hierarchy_information);
+ }
+ else
+ error("cannot parse'%s'\n", buf);
+ }
+
+ fclose(inif);
+
+ return tune_to_next_transponder(frontend_fd);
+}
+
+
+static void scan_tp (void)
+{
+ struct section_buf s0;
+ struct section_buf s1;
+ struct section_buf s2;
+ struct section_buf s3;
+
+ /**
+ * filter timeouts > min repetition rates specified in ETR211
+ */
+ setup_filter (&s0, demux_devname, 0x00, 0x00, 1, 0, 5); /* PAT */
+ setup_filter (&s1, demux_devname, 0x11, 0x42, 1, 0, 5); /* SDT */
+
+ add_filter (&s0);
+ add_filter (&s1);
+
+ if (!current_tp_only || output_format != OUTPUT_PIDS) {
+ setup_filter (&s2, demux_devname, 0x10, 0x40, 1, 0, 15); /* NIT */
+ add_filter (&s2);
+ if (get_other_nits) {
+ /* get NIT-others
+ * Note: There is more than one NIT-other: one per
+ * network, separated by the network_id.
+ */
+ setup_filter (&s3, demux_devname, 0x10, 0x41, 1, 1, 15);
+ add_filter (&s3);
+ }
+ }
+
+ do {
+ read_filters ();
+ } while (!(list_empty(&running_filters) &&
+ list_empty(&waiting_filters)));
+}
+
+static void scan_network (int frontend_fd, const char *initial)
+{
+ if (tune_initial (frontend_fd, initial) < 0) {
+ error("initial tuning failed\n");
+ return;
+ }
+
+ do {
+ scan_tp();
+ } while (tune_to_next_transponder(frontend_fd) == 0);
+}
+
+
+static void pids_dump_service_parameter_set(FILE *f, struct service *s)
+{
+ int i;
+
+ fprintf(f, "%-24.24s (0x%04x) %02x: ", s->service_name, s->service_id, s->type);
+ if (!s->pcr_pid || (s->type > 2))
+ fprintf(f, " ");
+ else if (s->pcr_pid == s->video_pid)
+ fprintf(f, "PCR == V ");
+ else if ((s->audio_num == 1) && (s->pcr_pid == s->audio_pid[0]))
+ fprintf(f, "PCR == A ");
+ else
+ fprintf(f, "PCR 0x%04x ", s->pcr_pid);
+ if (s->video_pid)
+ fprintf(f, "V 0x%04x", s->video_pid);
+ else
+ fprintf(f, " ");
+ if (s->audio_num)
+ fprintf(f, " A");
+ for (i = 0; i < s->audio_num; i++) {
+ fprintf(f, " 0x%04x", s->audio_pid[i]);
+ if (s->audio_lang[i][0])
+ fprintf(f, " (%.3s)", s->audio_lang[i]);
+ else if (s->audio_num == 1)
+ fprintf(f, " ");
+ }
+ if (s->teletext_pid)
+ fprintf(f, " TT 0x%04x", s->teletext_pid);
+ if (s->ac3_pid)
+ fprintf(f, " AC3 0x%04x", s->ac3_pid);
+ if (s->subtitling_pid)
+ fprintf(f, " SUB 0x%04x", s->subtitling_pid);
+ fprintf(f, "\n");
+}
+
+static char sat_polarisation (struct transponder *t)
+{
+ return t->polarisation == POLARISATION_VERTICAL ? 'v' : 'h';
+}
+
+static int sat_number (struct transponder *t)
+{
+ return switch_pos;
+}
+
+static void dump_lists (void)
+{
+ struct list_head *p1, *p2;
+ struct transponder *t;
+ struct service *s;
+ int n = 0, i;
+ char sn[20];
+
+ list_for_each(p1, &scanned_transponders) {
+ t = list_entry(p1, struct transponder, list);
+ list_for_each(p2, &t->services) {
+ n++;
+ }
+ }
+ info("dumping lists (%d services)\n", n);
+
+ list_for_each(p1, &scanned_transponders) {
+ t = list_entry(p1, struct transponder, list);
+ list_for_each(p2, &t->services) {
+ s = list_entry(p2, struct service, list);
+
+ if (!s->service_name) {
+ /* not in SDT */
+ snprintf(sn, sizeof(sn), "[%04x]", s->service_id);
+ s->service_name = strdup(sn);
+ }
+ /* ':' is field separator in szap and vdr service lists */
+ for (i = 0; s->service_name[i]; i++) {
+ if (s->service_name[i] == ':')
+ s->service_name[i] = ' ';
+ }
+ for (i = 0; s->provider_name && s->provider_name[i]; i++) {
+ if (s->provider_name[i] == ':')
+ s->provider_name[i] = ' ';
+ }
+ if (s->video_pid && !(serv_select & 1))
+ continue; /* no TV services */
+ if (!s->video_pid && s->audio_num && !(serv_select & 2))
+ continue; /* no radio services */
+ if (!s->video_pid && !s->audio_num && !(serv_select & 4))
+ continue; /* no data/other services */
+ if (s->scrambled && !ca_select)
+ continue; /* FTA only */
+ switch (output_format)
+ {
+ case OUTPUT_PIDS:
+ pids_dump_service_parameter_set (stdout, s);
+ break;
+ case OUTPUT_VDR:
+ vdr_dump_service_parameter_set (stdout,
+ s->service_name,
+ s->provider_name,
+ t->type,
+ &t->param,
+ sat_polarisation(t),
+ s->video_pid,
+ s->pcr_pid,
+ s->audio_pid,
+ //FIXME: s->audio_lang
+ s->audio_num,
+ s->teletext_pid,
+ s->scrambled,
+ //FIXME: s->subtitling_pid
+ s->ac3_pid,
+ s->service_id,
+ t->network_id,
+ s->transport_stream_id,
+ t->orbital_pos,
+ t->we_flag,
+ vdr_dump_provider,
+ ca_select,
+ vdr_version,
+ vdr_dump_channum,
+ s->channel_num);
+ break;
+ case OUTPUT_ZAP:
+ zap_dump_service_parameter_set (stdout,
+ s->service_name,
+ t->type,
+ &t->param,
+ sat_polarisation(t),
+ sat_number(t),
+ s->video_pid,
+ s->audio_pid,
+ s->service_id);
+ default:
+ break;
+ }
+ }
+ }
+ info("Done.\n");
+}
+
+static void handle_sigint(int sig)
+{
+ error("interrupted by SIGINT, dumping partial result...\n");
+ dump_lists();
+ exit(2);
+}
+
+static const char *usage = "\n"
+ "usage: %s [options...] [-c | initial-tuning-data-file]\n"
+ " scan doesn't do frequency scans, hence it needs initial\n"
+ " tuning data for at least one transponder/channel.\n"
+ " -c scan on currently tuned transponder only\n"
+ " -v verbose (repeat for more)\n"
+ " -q quiet (repeat for less)\n"
+ " -a N use DVB /dev/dvb/adapterN/\n"
+ " -f N use DVB /dev/dvb/adapter?/frontendN\n"
+ " -d N use DVB /dev/dvb/adapter?/demuxN\n"
+ " -s N use DiSEqC switch position N (DVB-S only)\n"
+ " -i N spectral inversion setting (0: off, 1: on, 2: auto [default])\n"
+ " -n evaluate NIT-other for full network scan (slow!)\n"
+ " -5 multiply all filter timeouts by factor 5\n"
+ " for non-DVB-compliant section repitition rates\n"
+ " -o fmt output format: 'zap' (default), 'vdr' or 'pids' (default with -c)\n"
+ " -x N Conditional Axcess, (default 1)\n"
+ " N=0 gets only FTA channels\n"
+ " N=xxx sets ca field in vdr output to :xxx:\n"
+ " -t N Service select, Combined bitfield parameter.\n"
+ " 1 = TV, 2 = Radio, 4 = Other, (default 7)\n"
+ " -p for vdr output format: dump provider name\n"
+ " -e N VDR version, default 2 for VDR-1.2.x\n"
+ " ANYTHING ELSE GIVES NONZERO NIT and TID\n"
+ " -l lnb-type (DVB-S Only) (use -l help to print types) or \n"
+ " -l low[,high[,switch]] in Mhz\n"
+ " -u UK DVB-T Freeview channel numbering for VDR\n";
+
+void
+bad_usage(char *pname, int prlnb)
+{
+int i;
+struct lnb_types_st *lnbp;
+char **cp;
+
+ if (!prlnb) {
+ fprintf (stderr, usage, pname);
+ } else {
+ i = 0;
+ fprintf(stderr, "-l <lnb-type> or -l low[,high[,switch]] in Mhz\nwhere <lnb-type> is:\n");
+ while(NULL != (lnbp = lnb_enum(i))) {
+ fprintf (stderr, "%s\n", lnbp->name);
+ for (cp = lnbp->desc; *cp ; cp++) {
+ fprintf (stderr, " %s\n", *cp);
+ }
+ i++;
+ }
+ }
+}
+
+int main (int argc, char **argv)
+{
+ char frontend_devname [80];
+ int adapter = 0, frontend = 0, demux = 0;
+ int opt, i;
+ int frontend_fd;
+ int fe_open_mode;
+ const char *initial = NULL;
+
+ /* start with default lnb type */
+ lnb_type = *lnb_enum(0);
+ while ((opt = getopt(argc, argv, "5cnpa:f:d:s:o:x:e:t:i:l:vq:u")) != -1) {
+ switch (opt) {
+ case 'a':
+ adapter = strtoul(optarg, NULL, 0);
+ break;
+ case 'c':
+ current_tp_only = 1;
+ output_format = OUTPUT_PIDS;
+ break;
+ case 'n':
+ get_other_nits = 1;
+ break;
+ case 'd':
+ demux = strtoul(optarg, NULL, 0);
+ break;
+ case 'f':
+ frontend = strtoul(optarg, NULL, 0);
+ break;
+ case 'p':
+ vdr_dump_provider = 1;
+ break;
+ case 's':
+ switch_pos = strtoul(optarg, NULL, 0);
+ break;
+ case 'o':
+ if (strcmp(optarg, "zap") == 0) output_format = OUTPUT_ZAP;
+ else if (strcmp(optarg, "vdr") == 0) output_format = OUTPUT_VDR;
+ else if (strcmp(optarg, "pids") == 0) output_format = OUTPUT_PIDS;
+ else {
+ bad_usage(argv[0], 0);
+ return -1;
+ }
+ break;
+ case '5':
+ long_timeout = 1;
+ break;
+ case 'x':
+ ca_select = strtoul(optarg, NULL, 0);
+ break;
+ case 'e':
+ vdr_version = strtoul(optarg, NULL, 0);
+ break;
+ case 't':
+ serv_select = strtoul(optarg, NULL, 0);
+ break;
+ case 'i':
+ spectral_inversion = strtoul(optarg, NULL, 0);
+ break;
+ case 'l':
+ if (lnb_decode(optarg, &lnb_type) < 0) {
+ bad_usage(argv[0], 1);
+ return -1;
+ }
+ break;
+ case 'v':
+ verbosity++;
+ break;
+ case 'q':
+ if (--verbosity < 0)
+ verbosity = 0;
+ break;
+ case 'u':
+ vdr_dump_channum = 1;
+ break;
+ default:
+ bad_usage(argv[0], 0);
+ return -1;
+ };
+ }
+
+ if (optind < argc)
+ initial = argv[optind];
+ if ((!initial && !current_tp_only) || (initial && current_tp_only) ||
+ (spectral_inversion > 2)) {
+ bad_usage(argv[0], 0);
+ return -1;
+ }
+ lnb_type.low_val *= 1000; /* convert to kiloherz */
+ lnb_type.high_val *= 1000; /* convert to kiloherz */
+ lnb_type.switch_val *= 1000; /* convert to kiloherz */
+ if (switch_pos >= 4) {
+ fprintf (stderr, "switch position needs to be < 4!\n");
+ return -1;
+ }
+ if (initial)
+ info("scanning %s\n", initial);
+
+ snprintf (frontend_devname, sizeof(frontend_devname),
+ "/dev/dvb/adapter%i/frontend%i", adapter, frontend);
+
+ snprintf (demux_devname, sizeof(demux_devname),
+ "/dev/dvb/adapter%i/demux%i", adapter, demux);
+ info("using '%s' and '%s'\n", frontend_devname, demux_devname);
+
+ for (i = 0; i < MAX_RUNNING; i++)
+ poll_fds[i].fd = -1;
+
+ fe_open_mode = current_tp_only ? O_RDONLY : O_RDWR;
+ if ((frontend_fd = open (frontend_devname, fe_open_mode)) < 0)
+ fatal("failed to open '%s': %d %m\n", frontend_devname, errno);
+ /* determine FE type and caps */
+ if (ioctl(frontend_fd, FE_GET_INFO, &fe_info) == -1)
+ fatal("FE_GET_INFO failed: %d %m\n", errno);
+
+ if ((spectral_inversion == INVERSION_AUTO ) &&
+ !(fe_info.caps & FE_CAN_INVERSION_AUTO)) {
+ info("Frontend can not do INVERSION_AUTO, trying INVERSION_OFF instead\n");
+ spectral_inversion = INVERSION_OFF;
+ }
+
+ signal(SIGINT, handle_sigint);
+
+ if (current_tp_only) {
+ current_tp = alloc_transponder(0); /* dummy */
+ /* move TP from "new" to "scanned" list */
+ list_del_init(&current_tp->list);
+ list_add_tail(&current_tp->list, &scanned_transponders);
+ current_tp->scan_done = 1;
+ scan_tp ();
+ }
+ else
+ scan_network (frontend_fd, initial);
+
+ close (frontend_fd);
+
+ dump_lists ();
+
+ return 0;
+}
+
+static void dump_dvb_parameters (FILE *f, struct transponder *t)
+{
+ switch (output_format) {
+ case OUTPUT_PIDS:
+ case OUTPUT_VDR:
+ vdr_dump_dvb_parameters(f, t->type, &t->param,
+ sat_polarisation (t), t->orbital_pos, t->we_flag);
+ break;
+ case OUTPUT_ZAP:
+ zap_dump_dvb_parameters (f, t->type, &t->param,
+ sat_polarisation (t), sat_number (t));
+ break;
+ default:
+ break;
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 11:32:41 +0000