WINC WiFi模块传输图片滞后一张?
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我想实现拍一张照片,再实时传输到浏览器,如此不断循环,所以先进行单次测试,拍一张传一张,发四次。
但是,看浏览器结果像是第一次不知道传输了什么,第二次传输了1.jpg,第三次传输了2.jpg,第四次传输了3.jpg,结束。
再添加重复代码也是类似的情况,会有一张的差距,我想问是什么原因造成的,怎么才能实时传输图片?测试采用IDE 2.4.0例程mjpeg_streamer,手机和openmv连接同一个WiFi,手机用UC浏览器连接IP:8080
代码中
import pyb #用于延时
将传输部分while (True): clock.tick() # Track elapsed milliseconds between snapshots(). frame = sensor.snapshot() cframe = frame.compressed(quality=35) header = "\r\n--openmv\r\n" \ "Content-Type: image/jpeg\r\n"\ "Content-Length:"+str(cframe.size())+"\r\n\r\n" client.send(header) client.send(cframe) print(clock.fps())
替换为四段重复代码
num=0 num+=1 frame = sensor.snapshot() frame.draw_string(5, 0, "%02d"%num, color = (128, 0, 0), scale = 2, mono_space = False) cframe = frame.compressed(quality=35) header = "\r\n--openmv\r\n" \ "Content-Type: image/jpeg\r\n"\ "Content-Length:"+str(cframe.size())+"\r\n\r\n" client.send(header) client.send(cframe) print(num) pyb.delay(3000) num+=1 frame = sensor.snapshot() frame.draw_string(5, 0, "%02d"%num, color = (128, 0, 0), scale = 2, mono_space = False) cframe = frame.compressed(quality=35) header = "\r\n--openmv\r\n" \ "Content-Type: image/jpeg\r\n"\ "Content-Length:"+str(cframe.size())+"\r\n\r\n" client.send(header) client.send(cframe) print(num) pyb.delay(3000) num+=1 frame = sensor.snapshot() frame.draw_string(5, 0, "%02d"%num, color = (128, 0, 0), scale = 2, mono_space = False) cframe = frame.compressed(quality=35) header = "\r\n--openmv\r\n" \ "Content-Type: image/jpeg\r\n"\ "Content-Length:"+str(cframe.size())+"\r\n\r\n" client.send(header) client.send(cframe) print(num) pyb.delay(3000) num+=1 frame = sensor.snapshot() frame.draw_string(5, 0, "%02d"%num, color = (128, 0, 0), scale = 2, mono_space = False) cframe = frame.compressed(quality=35) header = "\r\n--openmv\r\n" \ "Content-Type: image/jpeg\r\n"\ "Content-Length:"+str(cframe.size())+"\r\n\r\n" client.send(header) client.send(cframe) print(num) pyb.delay(3000) while True:pass