{"id":11419,"date":"2024-01-16T17:33:19","date_gmt":"2024-01-16T09:33:19","guid":{"rendered":"http:\/\/xinyiworld.top\/wordpress_it\/?p=11419"},"modified":"2024-01-17T10:58:44","modified_gmt":"2024-01-17T02:58:44","slug":"qtimer","status":"publish","type":"post","link":"http:\/\/xinyiworld.top\/wordpress_it\/?p=11419","title":{"rendered":"QTimer"},"content":{"rendered":"

https:\/\/www.jb51.net\/program\/299902krd.htm<\/a>
\nhttps:\/\/blog.csdn.net\/weixin_34275246\/article\/details\/109015201<\/a><\/p>\n

\u5934\u6587\u4ef6\uff1a#include <QTimer><\/code>\uff0c\u5426\u5219\u62a5\u9519\uff1ainvalid use of incomplete type 'class timer'<\/code><\/p>\n

\u6ce8\u610f\u4e8b\u9879<\/h3>\n
    \n
  • \n

    QTimer\u4f1a\u81ea\u52a8\u56de\u6536\u5bf9\u8c61\u548c\u53d8\u91cf
    \n\u5fc5\u987b\u901a\u8fc7this\u5f15\u7528\u5bf9\u8c61\uff0c\u6216\u8005\u5f15\u7528const\u4fee\u9970\u5e38\u91cf\u3002\u5426\u5219\u5bf9\u8c61\u4f1a\u8c03\u7528\u6790\u6784\u51fd\u6570\uff0c\u518d\u8c03\u7528\u5bf9\u8c61\u7684\u65b9\u6cd5\u4f1a\u5bfc\u81f4\u5d29\u6e83\uff0c\u53d8\u91cf\u7684\u503c\u4e5f\u4f1a\u548c\u5b9a\u4e49\u7684\u4e0d\u4e00\u6837\u3002<\/p>\n

    this->output = new QAudioOutput(format, qApp);\nthis->device = this->output->start();\nQTimer *timer_play = new QTimer();\nthis->timer_play = timer_play;\ntimer_play->setTimerType(Qt::PreciseTimer);\n\nQObject::connect(timer_play, &QTimer::timeout, this, [=](){\n    CZLogUtil::getInstance().mprintf("pcm_size :%d\\n",pcm_size);\n    if (pcm_size > 0) {\n        this->output->setVolume(20);\n        int readSize = this->output->periodSize();\n        int chunks = this->output->bytesFree() \/ readSize;\n        CZLogUtil::getInstance().mprintf("chunks %d\\n",chunks);\n        while (chunks) {\n            QByteArray samples = pcm_arr.mid(0, readSize);\n            int len = samples.size();\n            pcm_arr.remove(0, len);\n            CZLogUtil::getInstance().mprintf("write samples\\n");\n            if (len) this->device->write(samples);\n            if (len != readSize) break;\n\n            chunks--;\n        }\n    }\n});<\/code><\/pre>\n<\/li>\n<\/ul>\n