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-rw-r--r--binding/radio-binding.c147
1 files changed, 78 insertions, 69 deletions
diff --git a/binding/radio-binding.c b/binding/radio-binding.c
index 5f67567..490af5b 100644
--- a/binding/radio-binding.c
+++ b/binding/radio-binding.c
@@ -20,6 +20,7 @@
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
+#include <stdbool.h>
#include <unistd.h>
#include <sys/types.h>
#include <json-c/json.h>
@@ -53,6 +54,67 @@ static void scan_callback(uint32_t frequency, void *data)
afb_event_push(scan_event, json_object_get(jresp));
}
+static int set_role_state(bool state, char **output)
+{
+ int rc;
+ json_object *response = NULL;
+ json_object *jsonData = json_object_new_object();
+
+ json_object_object_add(jsonData, "action", json_object_new_string(state ? "open" : "close"));
+ rc = afb_service_call_sync("ahl-4a", "radio", jsonData, &response);
+ if (rc < 0) {
+ AFB_ERROR("Failed to %s 4A 'radio' role", state ? "open" : "close");
+ goto failed;
+ }
+
+ if(!state) {
+ // No need to look at the response on close
+ goto done;
+ }
+
+ // Handle response on open
+ json_object *valJson = NULL;
+ json_object *val = NULL;
+ rc = json_object_object_get_ex(response, "response", &valJson);
+ if (rc == 0) {
+ AFB_ERROR("Reply from 4A is missing a 'response' field");
+ rc = -1;
+ goto failed_malformed;
+ }
+
+ rc = json_object_object_get_ex(valJson, "device_uri", &val);
+ if (rc == 0) {
+ AFB_ERROR("Reply from 4A is missing a 'device_uri' field");
+ rc = -1;
+ goto failed_malformed;
+ }
+
+ const char *jres_pcm = json_object_get_string(val);
+ char * p = strchr(jres_pcm, ':');
+
+ if (p == NULL) {
+ AFB_ERROR("Unable to parse 'device_uri' value field");
+ rc = -1;
+ goto failed_malformed;
+ }
+
+ if (output) {
+ if (asprintf(output, "hw:%s", p + 1) < 0) {
+ AFB_ERROR("Insufficient memory");
+ rc = -1;
+ goto failed_malformed;
+ }
+ }
+done:
+ rc = 0;
+
+failed_malformed:
+ json_object_put(response);
+
+failed:
+ return rc;
+}
+
/*
* Binding verb handlers
*/
@@ -306,7 +368,13 @@ static void frequency_step(struct afb_req request)
*/
static void start(struct afb_req request)
{
- radio_impl_ops->start();
+ char *output = NULL;
+
+ if(set_role_state(true, &output) == 0) {
+ radio_impl_ops->set_output(output);
+ radio_impl_ops->start();
+ free(output);
+ }
afb_req_success(request, NULL, NULL);
}
@@ -319,6 +387,7 @@ static void start(struct afb_req request)
static void stop(struct afb_req request)
{
radio_impl_ops->stop();
+ set_role_state(false, NULL);
afb_req_success(request, NULL, NULL);
}
@@ -487,89 +556,29 @@ static const struct afb_verb_v2 verbs[]= {
static int init()
{
- int rc;
- char *output = NULL;
-
-#ifdef HAVE_4A_FRAMEWORK
- json_object *response = NULL;
- json_object *jsonData = json_object_new_object();
-
- json_object_object_add(jsonData, "action", json_object_new_string("open"));
- rc = afb_service_call_sync("ahl-4a", "get_roles", NULL, &response);
- if (rc < 0) {
- AFB_ERROR("Failed to query 4A about roles");
- goto failed;
- }
- AFB_NOTICE("4A: available roles are '%s'", json_object_get_string(response));
- json_object_put(response);
-
- rc = afb_service_call_sync("ahl-4a", "radio", jsonData, &response);
- if (rc < 0) {
- AFB_ERROR("Failed to query 'radio' role to 4A");
- goto failed;
- }
-
- json_object *valJson = NULL;
- json_object *val = NULL;
-
- rc = json_object_object_get_ex(response, "response", &valJson);
- if (rc == 0) {
- AFB_ERROR("Reply from 4A is missing a 'response' field");
- goto failed_malformed;
- }
-
- rc = json_object_object_get_ex(valJson, "device_uri", &val);
- if (rc == 0) {
- AFB_ERROR("Reply from 4A is missing a 'device_uri' field");
- goto failed_malformed;
- }
-
- const char *jres_pcm = json_object_get_string(val);
- char * p = strchr(jres_pcm, ':');
-
- if (p == NULL) {
- AFB_ERROR("Unable to parse 'device_uri' value field");
- rc = -1;
- goto failed_malformed;
- }
-
- if (asprintf(&output, "hw:%s", p + 1) < 0) {
- AFB_ERROR("Insufficient memory");
- rc = -1;
- goto failed_malformed;
- }
-#endif /* HAVE_4A_FRAMEWORK */
-
- // Initialize event structures
- freq_event = afb_daemon_make_event("frequency");
- scan_event = afb_daemon_make_event("station_found");
-
// Look for RTL-SDR USB adapter
radio_impl_ops = &rtlsdr_impl_ops;
- rc = radio_impl_ops->init(output);
+ int rc = radio_impl_ops->init();
if(rc != 0) {
// Look for Kingfisher Si4689
radio_impl_ops = &kf_impl_ops;
- rc = radio_impl_ops->init(output);
+ rc = radio_impl_ops->init();
}
if (rc != 0) {
AFB_ERROR("No radio device found, exiting");
- goto failed;
}
-
if(rc == 0) {
AFB_NOTICE("%s found\n", radio_impl_ops->name);
radio_impl_ops->set_frequency_callback(freq_callback, NULL);
+ } else {
+ return rc;
}
- free(output);
-#ifdef HAVE_4A_FRAMEWORK
-failed_malformed:
- json_object_put(response);
-#endif /* HAVE_4A_FRAMEWORK */
+ // Initialize event structures
+ freq_event = afb_daemon_make_event("frequency");
+ scan_event = afb_daemon_make_event("station_found");
-failed:
- return rc;
+ return 0;
}
const struct afb_binding_v2 afbBindingV2 = {