From 74e703c9b1c84aaf98b962b826ebd7a82d5ba06a Mon Sep 17 00:00:00 2001
From: guowenxue <guowenxue@gmail.com>
Date: Wed, 26 Jun 2019 02:55:37 +0800
Subject: [PATCH] update pj1_mqttd, add camera control support
---
pj1_mqttd/main.c | 66 +++++++++++++++++++++++++++++++++
1 files changed, 66 insertions(+), 0 deletions(-)
diff --git a/pj1_mqttd/main.c b/pj1_mqttd/main.c
index 4311727..54c23bb 100644
--- a/pj1_mqttd/main.c
+++ b/pj1_mqttd/main.c
@@ -189,6 +189,71 @@
}
+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;
@@ -226,6 +291,7 @@
if( NULL != (led_item=cJSON_GetObjectItem(array , "C920")) )
{
log_nrml("turn Logic C920 camera '%s'\n", led_item->valuestring);
+ turn_camera( led_item->valuestring );
}
}
}
--
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