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关于phonon的问题

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  • E Offline
    E Offline
    eiao
    wrote on last edited by
    #1

    另外phonon不能播放多声道...双声道有声音,上网
    http://qt-project.org/doc/qt-4.7/phonon-overview.html 里边的
    Warning: The MinGW version of Qt does not support building the Qt backend.
    什么意思?
    是不是说明MinGW的Qt装了directx和vs也没有用?

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    • E Offline
      E Offline
      eiao
      wrote on last edited by
      #2

      有木有有木有人...正在安装vs版本的Qt看看能有什么进展

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      • J Offline
        J Offline
        jiangcaiyang
        wrote on last edited by
        #3

        似乎,Phonon在Windows的使用没有问题啊,我用的是MinGW。
        下面是我写的博客:
        http://blog.csdn.net/gamesdev/article/details/8520955
        在Linux下可能无法同时播放多个音轨,这是我实验过的。

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        • E Offline
          E Offline
          eiao
          wrote on last edited by
          #4

          多谢回复!
          我的phonon播放纯wav的多声道,xp下正常,win7下没有声音
          win7下使用Qt自带的QtMultimedia,在播放空白声音时候会在开头有“彭”的一下
          这个在phonon的xp下没有...
          挺奇怪的...会不会是direct的问题?xp是9.c,win7是11

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          • J Offline
            J Offline
            jiangcaiyang
            wrote on last edited by
            #5

            如果开头有“嘭”的声音,那么可能是有WAV头被误当作波形进行播放了。其实WAV格式是一种比较简单的COFF格式,我曾经用DirectMusic解析过WAV,就出现了这样的情况,后面查出原因后就不会出现这样的情况了。

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            • E Offline
              E Offline
              eiao
              wrote on last edited by
              #6

              刚刚貌似回错地方了...
              查出原因是怎么弄得?手工打开wav?

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              • E Offline
                E Offline
                eiao
                wrote on last edited by
                #7

                的确...是我用QFILE直接读进去,头部被播放了...下次seek下估计好了...另外QFILE不是加载到内存的?如果用QBuffer之类会加载近内存,还只是一个接口?

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