added support for rtlsdr_rpc_set_and_get_tuner_bandwidth in rtl_rpc

README.rtlsdr_rpc

@@ -40,4 +40,5 @@ rtlsdr-waterfall
 rtlizer
 gnuradio-companion
 cubicsdr
-gqrx
+gqrx
+linrad

include/rtlsdr_rpc.h

@@ -74,6 +74,9 @@ int rtlsdr_rpc_set_tuner_if_gain
 int rtlsdr_rpc_set_tuner_gain_mode
 (void* dev, int manual);
 
+int rtlsdr_rpc_set_and_get_tuner_bandwidth
+(void* devp, uint32_t bw, uint32_t *applied_bw, int apply_bw);
+
 int rtlsdr_rpc_set_sample_rate
 (void* dev, uint32_t rate);
 

include/rtlsdr_rpc_msg.h

@@ -28,6 +28,7 @@ typedef enum
   RTLSDR_RPC_OP_GET_TUNER_GAIN,
   RTLSDR_RPC_OP_SET_TUNER_IF_GAIN,
   RTLSDR_RPC_OP_SET_TUNER_GAIN_MODE,
+  RTLSDR_RPC_OP_SET_GET_TUNER_BW,
   RTLSDR_RPC_OP_SET_SAMPLE_RATE,
   RTLSDR_RPC_OP_GET_SAMPLE_RATE,
   RTLSDR_RPC_OP_SET_TESTMODE,

src/librtlsdr.c

@@ -1160,6 +1160,13 @@ int rtlsdr_get_tuner_gains(rtlsdr_dev_t *dev, int *gains)
 
 int rtlsdr_set_and_get_tuner_bandwidth(rtlsdr_dev_t *dev, uint32_t bw, uint32_t *applied_bw, int apply_bw )
 {
+	#ifdef _ENABLE_RPC
+	if (rtlsdr_rpc_is_enabled())
+	{
+     return rtlsdr_rpc_set_and_get_tuner_bandwidth(dev, bw, applied_bw, apply_bw);
+	}
+	#endif
+
 	int r = 0;
 
 		*applied_bw = 0;		/* unknown */

src/rtl_rpcd.c

@@ -398,6 +398,7 @@ static const char* op_to_string(rtlsdr_rpc_op_t op)
     "RTLSDR_RPC_OP_GET_TUNER_GAIN",
     "RTLSDR_RPC_OP_SET_TUNER_IF_GAIN",
     "RTLSDR_RPC_OP_SET_TUNER_GAIN_MODE",
+    "RTLSDR_RPC_OP_SET_GET_TUNER_BW",
     "RTLSDR_RPC_OP_SET_SAMPLE_RATE",
     "RTLSDR_RPC_OP_GET_SAMPLE_RATE",
     "RTLSDR_RPC_OP_SET_TESTMODE",
@@ -789,6 +790,26 @@ static int handle_query
       break ;
     }
 
+  case RTLSDR_RPC_OP_SET_GET_TUNER_BW:
+    {
+      uint32_t did;
+      uint32_t bw;
+      uint32_t applied_bw;
+      int apply_bw;
+
+      if (rtlsdr_rpc_msg_pop_uint32(q, &did)) goto on_error;
+      if (rtlsdr_rpc_msg_pop_uint32(q, &bw)) goto on_error;
+      if (rtlsdr_rpc_msg_pop_uint32(q, &apply_bw)) goto on_error;
+
+      if ((rpcd->dev == NULL) || (rpcd->did != did)) goto on_error;
+
+      err = rtlsdr_set_and_get_tuner_bandwidth(rpcd->dev, bw, &applied_bw, apply_bw);
+      if (err) goto on_error;
+      if (rtlsdr_rpc_msg_push_uint32(r, applied_bw)) goto on_error;
+
+      break ;
+    }
+
   case RTLSDR_RPC_OP_SET_SAMPLE_RATE:
     {
       uint32_t did;

src/rtlsdr_rpc.c

@@ -567,6 +567,8 @@ int rtlsdr_rpc_open(void** devp, uint32_t index)
   rtlsdr_rpc_dev_t* dev;
   int err = -1;
 
+  index = (uint32_t) atoi(getenv("RTLSDR_RPC_DEVICE_INDEX"));
+
   *devp = NULL;
 
   if (init_cli(cli)) goto on_error_0;
@@ -925,6 +927,33 @@ int rtlsdr_rpc_set_tuner_gain(void* devp, int gain)
   return err;
 }
 
+int rtlsdr_rpc_set_and_get_tuner_bandwidth(void* devp, uint32_t bw, uint32_t *applied_bw, int apply_bw )
+{
+  rtlsdr_rpc_dev_t* const dev = devp;
+  rtlsdr_rpc_cli_t* const cli = dev->cli;
+  rtlsdr_rpc_msg_t* q;
+  rtlsdr_rpc_msg_t* r;
+  int err = -1;
+
+  if (alloc_qr(cli, &q, &r)) goto on_error_0;
+
+  rtlsdr_rpc_msg_set_op(q, RTLSDR_RPC_OP_SET_GET_TUNER_BW);
+
+  if (rtlsdr_rpc_msg_push_uint32(q, dev->index)) goto on_error_1;
+  if (rtlsdr_rpc_msg_push_uint32(q, (uint32_t)bw)) goto on_error_1;
+  if (rtlsdr_rpc_msg_push_uint32(q, (uint32_t)apply_bw)) goto on_error_1;
+
+  if (send_recv_msg(cli, q, r)) goto on_error_1;
+
+  if (rtlsdr_rpc_msg_get_err(r)) goto on_error_1;
+  if (rtlsdr_rpc_msg_pop_uint32(r, applied_bw)) goto on_error_1;
+
+ on_error_1:
+  free_qr(cli, q, r);
+ on_error_0:
+  return err;
+}
+
 int rtlsdr_rpc_get_tuner_gain(void* devp)
 {
   rtlsdr_rpc_dev_t* const dev = devp;