hfp: support CLIP in HF

src/hfp.h

@@ -510,11 +510,7 @@ typedef struct hfp_connection {
     uint8_t establish_audio_connection; 
     uint8_t release_audio_connection; 
 
-    uint8_t change_in_band_ring_tone_setting;
-    uint8_t ag_ring;
-    uint8_t ag_send_clip;
-    uint8_t ag_echo_and_noise_reduction;
-    uint8_t ag_activate_voice_recognition;
+    timer_source_t hfp_timeout;
 
     uint8_t microphone_gain;
     uint8_t send_microphone_gain;
@@ -523,22 +519,26 @@ typedef struct hfp_connection {
     uint8_t send_speaker_gain;
 
     uint8_t send_phone_number_for_voice_tag;
-    
+    uint8_t send_ag_status_indicators;
+    uint8_t send_response_and_hold_active;
+    uint8_t send_response_and_hold_status;
+
+    // AG only
+    uint8_t change_in_band_ring_tone_setting;
+    uint8_t ag_ring;
+    uint8_t ag_send_clip;
+    uint8_t ag_echo_and_noise_reduction;
+    uint8_t ag_activate_voice_recognition;
     uint8_t send_subscriber_number;
-    int next_subscriber_number_to_send;
+    uint8_t next_subscriber_number_to_send;
 
     int send_status_of_current_calls;
-    
-    uint8_t hf_answer_incoming_call;
-
-    int send_ag_status_indicators;
-    int send_response_and_hold_active;
-    int send_response_and_hold_status;
 
     // HF only
     hfp_hf_query_operator_state_t hf_query_operator_state;
+    uint8_t hf_answer_incoming_call;
+    uint8_t hf_send_clip_enable;
 
-    timer_source_t hfp_timeout;
 } hfp_connection_t;
 
 // UTILS_START : TODO move to utils

src/hfp_hf.c

@@ -236,6 +236,12 @@ static int hfp_hf_cmd_ata(uint16_t cid){
     return send_str_over_rfcomm(cid, buffer);
 }
 
+static int hfp_hf_send_clip_enable(uint16_t cid){
+    char buffer[20];
+    sprintf(buffer, "AT%s=1\r\n", HFP_ENABLE_CLIP);
+    return send_str_over_rfcomm(cid, buffer);
+}
+
 static void hfp_emit_ag_indicator_event(hfp_callback_t callback, int status, hfp_ag_indicator_t indicator){
     if (!callback) return;
     uint8_t event[6+HFP_MAX_INDICATOR_DESC_SIZE+1];
@@ -333,6 +339,13 @@ static int hfp_hf_run_for_context_service_level_connection_queries(hfp_connectio
         return done;
     }
 
+    if (context->hf_send_clip_enable){
+        context->hf_send_clip_enable = 0;
+        context->ok_pending = 1;
+        hfp_hf_send_clip_enable(context->rfcomm_cid);
+        return 1;
+    }
+
     switch (context->hf_query_operator_state){
         case HFP_HF_QUERY_OPERATOR_SET_FORMAT:
             context->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_W4_SET_FORMAT_OK;
@@ -813,9 +826,17 @@ void hfp_hf_answer_incoming_call(bd_addr_t bd_addr){
     // HACK - remove after hfp_callsetup_state is updated
     connection->hf_answer_incoming_call = 1;
     (void) hfp_callsetup_state;
+    hfp_run_for_context(connection);
     // if (hfp_callsetup_state == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){
     //     connection->hf_answer_incoming_call = 1;
     // } else {
     //     log_error("HFP HF: answering incoming call in wrong callsetup state %u", hfp_callsetup_state);
     // }
 }
+
+void hfp_hf_enable_calling_line_identification(bd_addr_t bd_addr){
+    hfp_hf_establish_service_level_connection(bd_addr);
+    hfp_connection_t * connection = get_hfp_connection_context_for_bd_addr(bd_addr);
+    connection->hf_send_clip_enable = 1;   
+    hfp_run_for_context(connection);
+}

src/hfp_hf.h

@@ -155,6 +155,11 @@ void hfp_hf_release_audio_connection(bd_addr_t bd_addr);
  */
 void hfp_hf_answer_incoming_call(bd_addr_t bd_addr);
 
+/**
+ * @brief 
+ */
+void hfp_hf_enable_calling_line_identification(bd_addr_t bd_addr);
+
 /* API_END */
 
 #if defined __cplusplus

test/pts/hfp_hf_test.c

@@ -111,6 +111,7 @@ static void show_usage(void){
     printf("f - answer incoming call\n");
 
     printf("g - query network operator name\n");
+    printf("h - enable Calling Line Identification.\n");
 
     printf("t - terminate connection\n");
 
@@ -169,6 +170,10 @@ static int stdin_process(struct data_source *ds){
             printf("Query operator.\n");
             hfp_hf_query_operator_selection(device_addr);
             break;
+        case 'h':
+            printf("Enable Calling Line Identification.\n");
+            hfp_hf_enable_calling_line_identification(device_addr);
+            break;
         case 't':
             printf("Terminate HCI connection.\n");
             gap_disconnect(handle);
@@ -204,6 +209,12 @@ static void packet_handler(uint8_t * event, uint16_t event_size){
         case HFP_SUBEVENT_SERVICE_LEVEL_CONNECTION_RELEASED:
             printf("Service level connection released.\n\n");
             break;
+        case HFP_SUBEVENT_AUDIO_CONNECTION_ESTABLISHED:
+            printf("\n** Audio connection established **\n");
+            break;
+        case HFP_SUBEVENT_AUDIO_CONNECTION_RELEASED:
+            printf("\n** Audio connection released **\n");
+            break;
         case HFP_SUBEVENT_COMPLETE:
             switch (cmd){
                 case 'd':