From 0738d2f6c9e2aa1fa7989d0f28704e491ea2c7f2 Mon Sep 17 00:00:00 2001
From: guowenxue <guowenxue@gmail.com>
Date: Wed, 26 Jun 2019 13:03:36 +0800
Subject: [PATCH] update mqttd main.c
---
pj1_mqttd/main.c | 131 ++++++++++++++++++++++++++++++++-----------
1 files changed, 98 insertions(+), 33 deletions(-)
diff --git a/pj1_mqttd/main.c b/pj1_mqttd/main.c
index 4311727..1939839 100644
--- a/pj1_mqttd/main.c
+++ b/pj1_mqttd/main.c
@@ -189,12 +189,76 @@
}
+int turn_camera(char *status)
+{
+ FILE *fp = NULL;
+ char buf[256];
+ int pid;
+ int running;
+ char cmd[256];
+
+
+ /* use lsusb command check Logic C920 camera exist or not */
+ fp = popen("lsusb | grep -v grep | grep C920", "r");
+ if( !fp )
+ {
+ log_err("popen to check C920 failure: %s\n", strerror(errno));
+ return -1;
+ }
+
+ memset(buf, 0, sizeof(buf));
+ fgets(buf, sizeof(buf), fp);
+ if( !strstr(buf, "C920") )
+ {
+ log_err("Logic C920 camera not exist\n");
+ return -2;
+ }
+ log_nrml("Logic C920 camera exist\n");
+
+
+ fp=popen("ps aux | grep mjpg_streamer | grep -v grep | awk '{print $2}'", "r");
+ if( !fp )
+ {
+ log_err("popen to check mjpg_streamer failure: %s\n", strerror(errno));
+ return -1;
+ }
+
+ memset(buf, 0, sizeof(buf));
+ fgets(buf, sizeof(buf), fp);
+
+ pid = atoi(buf);
+ if( pid > 1 )
+ {
+ log_nrml("mjpg_streamer already working as pid[%d] now\n", pid);
+ running = 1;
+ }
+ else
+ {
+ log_nrml("mjpg_streamer not running now\n");
+ running = 0;
+ }
+
+ if( running && strcasestr(status, "off") )
+ {
+ log_warn("Stop mjpg_streamer working on C920 now\n");
+ system("/bin/video stop");
+ return 0;
+ }
+
+ if( !running && strcasestr(status, "on") )
+ {
+ log_nrml("Start mjpg_streamer working on C920 now\n");
+ system("/bin/video start");
+ }
+
+ return 0;
+}
+
void proc_json_items(cJSON *root)
{
int i;
+ cJSON *item;
char *value;
- cJSON *item;
- cJSON *array;
if( !root )
{
@@ -202,43 +266,26 @@
return ;
}
- for( i=0; i<cJSON_GetArraySize(root); i++ )
+ item = cJSON_GetObjectItem(root, "camera");
+ if( !item )
{
- item = cJSON_GetArrayItem(root, i);
- if( !item )
- break;
-
- /* if item is cJSON_Object, then recursive call proc_json */
- if( cJSON_Object == item->type )
- {
- proc_json_items(item);
- }
- else if( cJSON_Array == item->type )
- {
- /* Logic C920 camera control */
- if( !strcasecmp(item->string, "camera") )
- {
- array = cJSON_GetArrayItem(item, 0);
- if( NULL != array )
- {
- cJSON *led_item;
-
- if( NULL != (led_item=cJSON_GetObjectItem(array , "C920")) )
- {
- log_nrml("turn Logic C920 camera '%s'\n", led_item->valuestring);
- }
- }
- }
- }
+ log_err("cJSON_Parse get camera failure: %s\n", cJSON_GetErrorPtr());
+ return ;
}
+ value = cJSON_PrintUnformatted(item);
+
+ turn_camera(value);
+
+ free(value);
}
void sub_message_callback(struct mosquitto *mosq, void *userdata, const struct mosquitto_message *message)
{
- cJSON *root = NULL;
- char *out;
-
+ mqtt_ctx_t *ctx = (mqtt_ctx_t *)userdata;
+ cJSON *root = NULL;
+ cJSON *item;
+ char *value;
if ( !message->payloadlen )
{
@@ -246,7 +293,7 @@
return ;
}
- log_nrml("Subscriber receive message: '%s'\n", message->payload);
+ log_dbg("Subscriber receive message: '%s'\n", message->payload);
root = cJSON_Parse(message->payload);
if( !root )
@@ -255,8 +302,26 @@
return ;
}
+ item = cJSON_GetObjectItem(root, "id");
+ if( !item )
+ {
+ log_err("cJSON_Parse get ID failure: %s\n", cJSON_GetErrorPtr());
+ goto OUT;
+ }
+
+
+ value = cJSON_PrintUnformatted(item);
+ if( strcasecmp(value, ctx->id) )
+ {
+ free(value);
+ goto OUT;
+ }
+ free(value);
+
+ log_nrml("Subscriber receive message: '%s'\n", message->payload);
proc_json_items(root);
+OUT:
cJSON_Delete(root); /* must delete it, or it will result memory leak */
return ;
}
--
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