linuxdvb: a bit more work on satconf

I now have initial code for tuning a satconf (LNB only).

src/input/mpegts/linuxdvb/linuxdvb_frontend.c

@@ -29,9 +29,6 @@
 #include <assert.h>
 #include <linux/dvb/dmx.h>
 
-static int
-linuxdvb_frontend_tune
-  ( linuxdvb_frontend_t *lfe, linuxdvb_mux_t *lm );
 static void
 linuxdvb_frontend_monitor ( void *aux );
 static void *
@@ -348,7 +345,7 @@ linuxdvb_frontend_start_mux
 
   /* Tune */
   tvhtrace("linuxdvb", "%s - tuning", buf1);
-  r = linuxdvb_frontend_tune(lfe, (linuxdvb_mux_t*)mmi->mmi_mux);
+  r = linuxdvb_frontend_tune(lfe, (linuxdvb_mux_t*)mmi->mmi_mux, -1);
 
   /* Failed */
   if (r != 0) {
@@ -667,17 +664,17 @@ linuxdvb_frontend_input_thread ( void *aux )
  * Tuning
  * *************************************************************************/
 
-static int
+int
 linuxdvb_frontend_tune
-  ( linuxdvb_frontend_t *lfe, linuxdvb_mux_t *lm )
+  ( linuxdvb_frontend_t *lfe, linuxdvb_mux_t *lm, uint32_t freq )
 {
   int r;
   struct dvb_frontend_event ev;
-  dvb_mux_conf_t *dmc = &lm->lm_tuning;
-  struct dvb_frontend_parameters *p = &dmc->dmc_fe_params;
 
   /* S2 tuning */
 #if DVB_API_VERSION >= 5
+  dvb_mux_conf_t *dmc = &lm->lm_tuning;
+  struct dvb_frontend_parameters *p = &dmc->dmc_fe_params;
   struct dtv_property cmds[20];
   struct dtv_properties cmdseq = { .num = 0, .props = cmds };
   
@@ -691,13 +688,16 @@ linuxdvb_frontend_tune
   };
   if ((ioctl(lfe->lfe_fe_fd, FE_SET_PROPERTY, &clear_cmdseq)) != 0)
     return -1;
+
+  if (freq == (uint32_t)-1)
+    freq = p->frequency;
   
   /* Tune */
 #define S2CMD(c, d)\
   cmds[cmdseq.num].cmd      = c;\
   cmds[cmdseq.num++].u.data = d
   S2CMD(DTV_DELIVERY_SYSTEM, lm->lm_tuning.dmc_fe_delsys);
-  S2CMD(DTV_FREQUENCY,       p->frequency);
+  S2CMD(DTV_FREQUENCY,       freq);
   S2CMD(DTV_INVERSION,       p->inversion);
 
   /* DVB-T */
@@ -731,6 +731,11 @@ linuxdvb_frontend_tune
   /* Tune */
   S2CMD(DTV_TUNE, 0);
 #undef S2CMD
+#else
+  dvb_mux_conf_t dmc = lm->lm_tuning;
+  struct dvb_frontend_parameters *p = &dmc.dmc_fe_params;
+  if (freq != (uint32_t)-1)
+    p->frequency = freq;
 #endif
 
   /* discard stale events */

src/input/mpegts/linuxdvb/linuxdvb_private.h

@@ -29,6 +29,7 @@ typedef struct linuxdvb_frontend linuxdvb_frontend_t;
 typedef struct linuxdvb_network  linuxdvb_network_t;
 typedef struct linuxdvb_mux      linuxdvb_mux_t;
 typedef struct linuxdvb_satconf  linuxdvb_satconf_t;
+typedef struct linuxdvb_lnb      linuxdvb_lnb_t;
 
 typedef LIST_HEAD(,linuxdvb_hardware) linuxdvb_hardware_list_t;
 
@@ -170,6 +171,13 @@ linuxdvb_frontend_added
 void linuxdvb_frontend_add_network
   ( linuxdvb_frontend_t *lfe, linuxdvb_network_t *net );
 
+int linuxdvb_frontend_tune
+  ( linuxdvb_frontend_t *lfe, linuxdvb_mux_t *lm, uint32_t freq );
+
+/*
+ * Network
+ */
+
 struct linuxdvb_network
 {
   mpegts_network_t;
@@ -211,6 +219,15 @@ mpegts_service_t *linuxdvb_service_create0
   (linuxdvb_mux_t *lm, uint16_t sid, uint16_t pmt_pid,
    const char *uuid, htsmsg_t *conf);
 
+/*
+ * LNB
+ */
+struct linuxdvb_lnb
+{
+  uint32_t  (*lnb_frequency)(linuxdvb_lnb_t*, linuxdvb_mux_t*);
+  int       (*lnb_tune)(linuxdvb_lnb_t*, linuxdvb_mux_t *lm, int fd);
+};
+
 /*
  * Satconf
  */
@@ -220,6 +237,7 @@ struct linuxdvb_satconf
 
   /* Links */
   mpegts_input_t *ls_frontend;
+  linuxdvb_lnb_t *ls_lnb;
 };
 
 linuxdvb_satconf_t *linuxdvb_satconf_create0(const char *uuid, htsmsg_t *conf);

src/input/mpegts/linuxdvb/linuxdvb_satconf.c

@@ -214,9 +214,33 @@ static int
 linuxdvb_satconf_start_mux
   ( mpegts_input_t *mi, mpegts_mux_instance_t *mmi )
 {
-  linuxdvb_satconf_t *ls = (linuxdvb_satconf_t*)mi;
-  mi = ls->ls_frontend;
-  // TODO: need more here!
+  int r;
+  uint32_t f;
+  linuxdvb_satconf_t   *ls = (linuxdvb_satconf_t*)mi;
+  linuxdvb_frontend_t *lfe = (linuxdvb_frontend_t*)(mi = ls->ls_frontend);
+  linuxdvb_mux_t      *lm  = (linuxdvb_mux_t*)mmi;
+
+  /* Test run */
+  // Note: basically this ensures the tuning params are acceptable
+  //       for the FE, so that if they're not we don't have to wait
+  //       for things like rotors and switches
+  if (!ls->ls_lnb)
+    return SM_CODE_TUNING_FAILED;
+  f = ls->ls_lnb->lnb_frequency(ls->ls_lnb, lm);
+  if (f < 0)
+    return SM_CODE_TUNING_FAILED;
+  r = linuxdvb_frontend_tune(lfe, lm, f);
+  if (r) return r;
+  
+  /* Switch */
+
+  /* Rotor */
+
+  /* LNB */
+  if (ls->ls_lnb->lnb_tune(ls->ls_lnb, lm, lfe->lfe_fe_fd))
+    return SM_CODE_TUNING_FAILED;
+
+  /* Tune */
   return mi->mi_start_mux(mi, mmi);
 }