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make sample data up to two decimal floating point

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This commit is contained in:
nixzhu
2015-04-07 17:20:55 +08:00
parent 137504ebc6
commit c40320c3cb
1 changed files with 19 additions and 10 deletions
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Yep/ViewControllers/Conversation/ConversationViewController.swift
+19 -10
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@@ -225,19 +225,28 @@ class ConversationViewController: UIViewController {
var metaData: String? = nil
let audioSamples = self.waverView.waver.compressSamples()
if let audioSamples = self.waverView.waver.compressSamples() {
if let fileURL = YepAudioService.sharedManager.audioFileURL {
let audioAsset = AVURLAsset(URL: fileURL, options: nil)
let audioDuration = CMTimeGetSeconds(audioAsset.duration) as Double
var audioSamples = audioSamples
// 浮点数最多两位小数，使下面计算 metaData 时不至于太长
for i in 0..<audioSamples.count {
var sample = audioSamples[i]
sample = round(sample * 100.0) / 100.0
audioSamples[i] = sample
}
println("Comporessed \(audioSamples)")
let audioMetaDataInfo = ["audio_samples": audioSamples!, "audio_duration": audioDuration]
if let fileURL = YepAudioService.sharedManager.audioFileURL {
let audioAsset = AVURLAsset(URL: fileURL, options: nil)
let audioDuration = CMTimeGetSeconds(audioAsset.duration) as Double
if let audioMetaData = NSJSONSerialization.dataWithJSONObject(audioMetaDataInfo, options: nil, error: nil) {
let audioMetaDataString = NSString(data: audioMetaData, encoding: NSUTF8StringEncoding) as? String
metaData = audioMetaDataString
println("\nComporessed \(audioSamples)")
let audioMetaDataInfo = ["audio_samples": audioSamples, "audio_duration": audioDuration]
if let audioMetaData = NSJSONSerialization.dataWithJSONObject(audioMetaDataInfo, options: nil, error: nil) {
let audioMetaDataString = NSString(data: audioMetaData, encoding: NSUTF8StringEncoding) as? String
metaData = audioMetaDataString
}
}
}