通过

搜索 RIFF 区块

  • 项目

以下示例使用 mmioDescend 函数搜索表单类型为“WAVE”的“RIFF”区块，以验证刚刚打开的文件是否为波形音频文件。

HMMIO    hmmio; 
MMCKINFO mmckinfoParent; 
MMCKINFO mmckinfoSubchunk; 
. 
. 
. 
// Locate a "RIFF" chunk with a "WAVE" form type to make 
// sure the file is a waveform-audio file. 
mmckinfoParent.fccType = mmioFOURCC('W', 'A', 'V', 'E'); 
if (mmioDescend(hmmio, (LPMMCKINFO) &mmckinfoParent, NULL, 
    MMIO_FINDRIFF)) 
    // The file is not a waveform-audio file. 
else 
    // The file is a waveform-audio file