c99 designated initializer example

gistfile1.c

AudioStreamBasicDescription fmt = (AudioStreamBasicDescription) {
    .mChannelsPerFrame = 1,
    .mBytesPerFrame = sizeof(int16_t),
    .mBytesPerPacket = sizeof(int16_t),
    .mFramesPerPacket = 1,
    .mBitsPerChannel = sizeof(int16_t) * 8,
    .mFormatID = kAudioFormatLinearPCM,
    .mSampleRate = 44100.0,
    .mFormatFlags = kAudioFormatFlagIsBigEndian | 
        kAudioFormatFlagIsPacked |
        kAudioFormatFlagIsNonInterleaved
};