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#import <UIKit/UIKit.h>
#import <AVFoundation/AVFoundation.h>
#import <QuartzCore/QuartzCore.h>
@interface
RootViewController : UIViewController<AVAudioRecorderDelegate,UIAlertViewDelegate>
{
AVAudioRecorder *recoder;
NSURLConnection
*urlConnection;
NSMutableData
*receiveData;
NSTimer
*timer;
NSTimeInterval
bInterval;
UIAlertView *wAlertView;
}
@end
//
// RootViewController.m
// asr
//
// Created by cat on 14-3-20.
// Copyright (c) 2014年 cat. All rights reserved.
//
#import "RootViewController.h"
@interfaceRootViewController
()
@end
@implementation
RootViewController
- (void)viewDidLoad
{
[superviewDidLoad];
// Do any additional setup after loading the view.
}
- (void)didReceiveMemoryWarning
{
[superdidReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (void)dealloc
{
if(recoder)
{
[recoder stop];
[recoder release];
}
[urlConnectionrelease];
[super
dealloc];
}
- (void)loadView
{
[super
loadView];
NSString
*str[] = {@"Record", @"Play"};
float
y = 64.0f;
for(int
i = 0;i < sizeof(str) / sizeof(str[0]); i++)
{
UIButton *button = [UIButtonbuttonWithType:UIButtonTypeRoundedRect];
button.frame = CGRectMake(160.0f - 40.0f, y, 80.0f, 80.0f);
button.tag = 100 + i;
button.layer.masksToBounds = YES;
button.layer.cornerRadius = 40.0f;
button.layer.borderColor = [[UIColor redColor] CGColor];
[button setTitle:str[i] forState:UIControlStateNormal];
if(i != 0)
[button addTarget:selfaction:@selector(buttonPressed:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:button];
if(i == 0)
{
UILongPressGestureRecognizer *gestureRecognizer = [[UILongPressGestureRecognizer alloc] initWithTarget:self
action:@selector(longPress:)];
[button addGestureRecognizer:gestureRecognizer];
[gestureRecognizer release];
}
y += button.bounds.size.width + 40.0f;
}
receiveData = [[NSMutableData
alloc] init];
[[AVAudioSessionsharedInstance] setCategory:AVAudioSessionCategoryPlayAndRecorderror: nil];
}
- (void)longPress:(UILongPressGestureRecognizer *)gestureRecognizer
{
if([gestureRecognizer state] == UIGestureRecognizerStateBegan)
{
[self
record];
}
elseif([gestureRecognizer state] == UIGestureRecognizerStateEnded)
{
[selfparseStringFromWav];
}
}
- (void)parseStringFromWav
{
wAlertView = [[UIAlertViewalloc] initWithTitle:@"Please Wait"message:nildelegate:selfcancelButtonTitle:nilotherButtonTitles:nil];
[wAlertViewshow];
UIActivityIndicatorView *aiv = [[UIActivityIndicatorViewalloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];
aiv.center = CGPointMake(wAlertView.bounds.size.width / 2.0f, wAlertView.bounds.size.height - 40.0f);
[aiv startAnimating];
[wAlertView addSubview:aiv];
[aiv release];
[wAlertViewrelease];
if(recoder)
{
[recoder stop];
}
if(timer)
{
[timer invalidate];
timer = nil;
}
NSURL
*url = [NSURLURLWithString:@"http://www.google.com/speech-api/v1/recognize?xjerr=1&client=chromium&lang=zh"];
//Create the request
NSMutableURLRequest
*request = [[[NSMutableURLRequestalloc] init] autorelease];
//头部设置
NSDictionary
*headField = [NSDictionarydictionaryWithObjectsAndKeys:@"audio/L16; rate=16000",@"Content-Type", nil];
[request setAllHTTPHeaderFields:headField];
//要post的网址
[request setURL:url];
[request setHTTPMethod:@"POST"];
[request setHTTPBody:[NSDatadataWithContentsOfFile:[selfrecordTmpPath]]];
if(urlConnection)
{
[urlConnectioncancel];
[urlConnectionrelease];
urlConnection = nil;
}
urlConnection = [[NSURLConnectionalloc] initWithRequest:request delegate:selfstartImmediately:YES];
[urlConnectionstart];
}
- (void)buttonPressed:(UIButton *)sender
{
if(sender.tag == 101)
{
NSError
*error;
NSURL
*url = [NSURL
fileURLWithPath:[self
recordTmpPath]];
AVAudioPlayer *audioPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:&error];
if(!audioPlayer)
{
NSLog(@">>>>>>>>>>audioplayer cant not init");
return;
}
if(![audioPlayer prepareToPlay])
{
NSLog(@">>>>>>>>>>not prepareToPlay");
return;
}
if(![audioPlayer play])
{
NSLog(@">>>>>>>>>>not play");
}
}
}
- (NSString
*)recordTmpPath
{
return
[NSTemporaryDirectory() stringByAppendingFormat:@"voice.wav"];
}
- (BOOL)record
{
NSError
*error;
NSMutableDictionary
*settings = [NSMutableDictionarydictionary];
[settings setValue:[NSNumbernumberWithInt:kAudioFormatLinearPCM] forKey:AVFormatIDKey];
[settings setValue:[NSNumbernumberWithFloat:16000] forKey:AVSampleRateKey];
[settings setValue:[NSNumbernumberWithInt:1] forKey:AVNumberOfChannelsKey];
[settings setValue:[NSNumbernumberWithInt:AVAudioQualityHigh] forKey:AVEncoderAudioQualityKey];
NSLog(@">>>>>>>>>>path %@", [selfrecordTmpPath]);
NSURL
*url = [NSURL
fileURLWithPath:[self
recordTmpPath]];
if(recoder)
{
[recoder release];
recoder = nil;
}
recoder = [[AVAudioRecorder alloc] initWithURL:url settings:settings error:&error];
if(!recoder)
{
NSLog(@">>>>>>Error %@", [error localizedDescription]);
return
NO;
}
recoder.delegate = self;
if(![recoderprepareToRecord])
{
[selfshowAlert:@"Error while preparing recording..."];
return
NO;
}
if(![recoder record])
{
[selfshowAlert:@"Error while attempting to record audio..."];
return
NO;
}
if(timer)
{
[timer invalidate];
timer = nil;
}
bInterval = [[NSDatedate] timeIntervalSince1970];
timer = [NSTimerscheduledTimerWithTimeInterval:1.0ftarget:selfselector:@selector(update) userInfo:nilrepeats:YES];
returnYES;
}
- (void)update
{
int
sec = [[NSDatedate] timeIntervalSince1970] - bInterval;
self.title = [NSString
stringWithFormat:@"%ds", sec];
}
- (void)viewWillDisappear:(BOOL)animated
{
if(timer)
{
[timer invalidate];
timer = nil;
}
}
- (void)updateMeters
{
[recoderupdateMeters];
float
peakPowerForChannel = pow(10, 0.05 * [recoder peakPowerForChannel:0]);
float
averagePowerForChannel = pow(10, 0.05*[recoder averagePowerForChannel:0]);
NSLog(@"Average input: %f Peak input: %f", peakPowerForChannel,averagePowerForChannel);
}
- (void)audioRecorderDidFinishRecording:(AVAudioRecorder *)recorder successfully:(BOOL)flag
{
NSLog(@">>>>>>>>>>audioRecorderDidFinishRecording");
}
/* if an error occurs while encoding it will be reported to the delegate. */
- (void)audioRecorderEncodeErrorDidOccur:(AVAudioRecorder *)recorder error:(NSError
*)error
{
NSLog(@">>>>>>>>>>audioRecorderEncodeErrorDidOccur %@", [error localizedDescription]);
}
- (void)showAlert:(NSString
*)aMessage
{
UIAlertView *alertView = [[UIAlertViewalloc] initWithTitle:@"提示"message:aMessage delegate:nilcancelButtonTitle:@"确定"otherButtonTitles:nil];
[alertView show];
[alertView release];
}
#pragma mark -
#pragma mark NSURLConnection delegate Methods
- (void)connection:(NSURLConnection
*)connection didReceiveResponse:(NSURLResponse
*)response
{
[receiveDatasetLength:0];
}
- (void)connection:(NSURLConnection
*)connection didReceiveData:(NSData
*)data
{
if(data)
[receiveData appendData:data];
}
- (void)connectionDidFinishLoading:(NSURLConnection
*)connection
{
NSLog(@">>>>>>>>>>connectionDidFinishLoading");
[wAlertViewdismissWithClickedButtonIndex:0animated:NO];
NSString
*result = [[[NSStringalloc] initWithData:receiveDataencoding:NSUTF8StringEncoding] autorelease];
[self
showAlert:result];
}
- (void)connection:(NSURLConnection
*)connection didFailWithError:(NSError
*)error
{
NSLog(@">>>>>>>>>>didFailWithError %@",[error localizedDescription]);
[wAlertViewdismissWithClickedButtonIndex:0animated:YES];
}
@end
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