AudioToolbox.m

- (AudioStreamBasicDescription)parseAudioFileData:(AudioFileID)audioFileID
                                            error:(NSError **)error {
    AudioStreamBasicDescription buffDataFormat;
    UInt32 formatSize = sizeof(AudioStreamBasicDescription);
    OSStatus status = AudioFileGetProperty(audioFileID, kAudioFilePropertyDataFormat, &formatSize, &buffDataFormat);
    if (status != noErr) {
        NSLog(@"parseAudioFileData failed %d", status);
        *error = [NSError errorWithDomain:@"parse data format failed" code:-100 userInfo:nil];
    }

    return buffDataFormat;
}

- (OSStatus)parseAudioListFileData:(AudioFileID)audioFileID {
    UInt32 formatListSize = 0;
    OSStatus status = AudioFileGetPropertyInfo(audioFileID, kAudioFilePropertyFormatList, &formatListSize, NULL);
    if (status != noErr) NSLog(@"AudioFileGetPropertyInfo data format failed");
    if (status == noErr) {
        AudioFormatListItem *formatList = (AudioFormatListItem *)malloc(formatListSize);
        status = AudioFileGetProperty(audioFileID, kAudioFilePropertyFormatList, &formatListSize, formatList);
        if (status == noErr) {
            for (int i = 0; i * sizeof(AudioFormatListItem) < formatListSize; i += sizeof(AudioFormatListItem)) {
                AudioStreamBasicDescription pasbd = formatList[i].mASBD;
                NSLog(@"mFormatID = %d", (signed int)pasbd.mFormatID);
                NSLog(@"mFormatFlags = %d", (signed int)pasbd.mFormatFlags);
                NSLog(@"mSampleRate = %ld", (signed long int)pasbd.mSampleRate);
                NSLog(@"mBitsPerChannel = %d", (signed int)pasbd.mBitsPerChannel);
                NSLog(@"mBytesPerFrame = %d", (signed int)pasbd.mBytesPerFrame);
                NSLog(@"mBytesPerPacket = %d", (signed int)pasbd.mBytesPerPacket);
                NSLog(@"mChannelsPerFrame = %d", (signed int)pasbd.mChannelsPerFrame);
                NSLog(@"mFramesPerPacket = %d", (signed int)pasbd.mFramesPerPacket);
                NSLog(@"mReserved = %d", (signed int)pasbd.mReserved);
            }
        }
        free(formatList);
    }

    return status;
}