iphone，android，web，wp7同时录音及播放－m4a格式

/*

 Erica Sadun, http://ericasadun.com

 iPhone Developer's Cookbook, 3.0 Edition

 BSD License, Use at your own risk

 */

 

#import <UIKit/UIKit.h>

#import <AVFoundation/AVFoundation.h>

#import <CoreAudio/CoreAudioTypes.h>

#import "ModalAlert.h"

 

#define COOKBOOK_PURPLE_COLOR[UIColor colorWithRed:0.20392f green:0.19607f blue:0.61176f alpha:1.0f]

#define BARBUTTON(TITLE, SELECTOR)[[[UIBarButtonItem alloc] initWithTitle:TITLE style:UIBarButtonItemStylePlain target:self action:SELECTOR] autorelease]

#define SYSBARBUTTON(ITEM, TARGET, SELECTOR) [[[UIBarButtonItem alloc] initWithBarButtonSystemItem:ITEM target:TARGET action:SELECTOR] autorelease]

 

#define DOCUMENTS_FOLDER [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"]

#define FILEPATH [DOCUMENTS_FOLDER stringByAppendingPathComponent:[self dateString]]

 

#define XMAX20.0f

 

@interface TestBedViewController : UIViewController <AVAudioRecorderDelegate, AVAudioPlayerDelegate>

{

AVAudioRecorder *recorder;

AVAudioSession *session;

IBOutletUIProgressView *meter1;

IBOutletUIProgressView *meter2;

NSTimer *timer;

}

@property (retain) AVAudioSession *session;

@property (retain) AVAudioRecorder *recorder;

@end

 

@implementation TestBedViewController

@synthesize session;

@synthesize recorder;

 

/*

 -(IBAction)start:(id)sender{

 recordSetting = [[NSMutableDictionary alloc] init];

 [recordSetting setValue:[NSNumber numberWithInt:kAudioFormatAppleLossless] forKey:AVFormatIDKey];

 [recordSetting setValue:[NSNumber numberWithFloat:44100.0] forKey:AVSampleRateKey];

 [recordSetting setValue:[NSNumber numberWithInt: 2] forKey:AVNumberOfChannelsKey];

 [recordSetting setValue:[NSNumber numberWithInt:16] forKey:AVLinearPCMBitDepthKey];

 [recordSetting setValue:[NSNumber numberWithBool:NO] forKey:AVLinearPCMIsBigEndianKey];

 [recordSetting setValue:[NSNumber numberWithBool:NO] forKey:AVLinearPCMIsFloatKey];

 

 NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);

 NSString *documentsDirectory = [paths objectAtIndex:0];

 soundsDirectoryPath = [documentsDirectory stringByAppendingPathComponent:@"Sounds"];

 [[NSFileManager defaultManager] createDirectoryAtPath:soundsDirectoryPath withIntermediateDirectories:YES attributes:nil error:NULL];

 

 NSURL *url = [NSURL fileURLWithPath:[NSString stringWithFormat:@"%@/Test.m4a", [soundsDirectoryPath retain]]];

 NSLog(@"Path : %@", [url absoluteString]);

 NSError *err = nil;

 if([recorder isRecording])

 {

 [recorder stop];

 recorder = nil;

 }

 recorder = [[ AVAudioRecorder alloc] initWithURL:url settings:recordSetting error:&err];

 [recorder setDelegate:self];

 if(err)

 NSLog(@"ERROR : %@", err);

 BOOL st = [recorder prepareToRecord];

 if(!st){

 NSLog(@"Failed");

 }

 recorder.meteringEnabled = YES;

 BOOL status = [recorder record];

 if(!status)

 NSLog(@"Failed");

 }

 

 -(IBAction)stop:(id)sender{

 if([recorder isRecording]){

 NSLog(@"Recording...");

 }else{

 NSLog(@"Not recording...");

 }

 [recorder stop];

 }

 

 -(void) audioRecorderDidFinishRecording:(AVAudioRecorder *)recorder successfully:(BOOL)flag{

 NSURL *url = [NSURL fileURLWithPath:[NSString stringWithFormat:@"%@/Test.m4a", [soundsDirectoryPath retain]]];

 NSError *err = nil;

 player = [[AVAudioPlayer alloc] initWithContentsOfURL:url error:&err];

 [player setDelegate:self];

 [player setMeteringEnabled:YES];

 [player play];

 }

 */

 

- (NSString *) dateString

{

// return a formatted string for a file name

NSDateFormatter *formatter = [[[NSDateFormatteralloc] init] autorelease];

formatter.dateFormat = @"ddMMMYY_hhmmssa";

return [[formatter stringFromDate:[NSDatedate]] stringByAppendingString:@".m4a"];

}

 

- (NSString *) formatTime: (int) num

{

// return a formatted ellapsed time string

int secs = num % 60;

int min = num / 60;

if (num < 60) return [NSString stringWithFormat:@"0:%02d", num];

return[NSString stringWithFormat:@"%d:%02d", min, secs];

}

 

- (void) updateMeters

{

// Show the current power levels

[self.recorderupdateMeters];

float avg = [self.recorderaveragePowerForChannel:0];

float peak = [self.recorderpeakPowerForChannel:0];

meter1.progress = (XMAX + avg) / XMAX;

meter2.progress = (XMAX + peak) / XMAX;

 

// Update the current recording time

self.title = [NSStringstringWithFormat:@"%@", [selfformatTime:self.recorder.currentTime]];

}

 

- (void)audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)flag

{

// Prepare UI for recording

self.title = nil;

meter1.hidden = NO;

meter2.hidden = NO;

{

// Return to play and record session

NSError *error;

if (![[AVAudioSessionsharedInstance] setCategory:AVAudioSessionCategoryPlayAndRecorderror:&error])

{

NSLog(@"Error: %@", [error localizedDescription]);

return;

}

self.navigationItem.rightBarButtonItem = BARBUTTON(@"Record", @selector(record));

}

 

// Delete the current recording

[ModalAlertsay:@"Deleting recording"];

//[self.recorder deleteRecording]; <-- too flaky to use

NSError *error;

if (![[NSFileManagerdefaultManager] removeItemAtPath:[self.recorder.urlpath] error:&error])

NSLog(@"Error: %@", [error localizedDescription]);

 

// Release the player

[player release];

}

 

- (void)audioRecorderDidFinishRecording:(AVAudioRecorder *)recorder successfully:(BOOL)flag

{

// Stop monitoring levels, time

[timerinvalidate];

meter1.progress = 0.0f;

meter1.hidden = YES;

meter2.progress = 0.0f;

meter2.hidden = YES;

self.navigationItem.leftBarButtonItem = nil;

self.navigationItem.rightBarButtonItem = nil;

 

[ModalAlertsay:@"File saved to %@", [[self.recorder.urlpath] lastPathComponent]];

self.title = @"Playing back recording...";

 

// Start playback

AVAudioPlayer *player = [[AVAudioPlayeralloc] initWithContentsOfURL:self.recorder.urlerror:nil];

player.delegate = self;

 

// Change audio session for playback

NSError *error;

if (![[AVAudioSessionsharedInstance] setCategory:AVAudioSessionCategoryPlaybackerror:&error])

{

NSLog(@"Error: %@", [error localizedDescription]);

return;

}

 

[player play];

}

 

- (void) stopRecording

{

// This causes the didFinishRecording delegate method to fire

[self.recorderstop];

}

 

- (void) continueRecording

{

// resume from a paused recording

[self.recorderrecord];

self.navigationItem.rightBarButtonItem = BARBUTTON(@"Done", @selector(stopRecording));

self.navigationItem.leftBarButtonItem = SYSBARBUTTON(UIBarButtonSystemItemPause, self, @selector(pauseRecording));

}

 

- (void) pauseRecording

{

// pause an ongoing recording

[self.recorderpause];

self.navigationItem.leftBarButtonItem = BARBUTTON(@"Continue", @selector(continueRecording));

self.navigationItem.rightBarButtonItem = nil;

}

 

- (BOOL) record

{

    NSMutableDictionary *recordSetting = [[NSMutableDictionaryalloc] init];

    [recordSetting setValue:[NSNumbernumberWithInt:kAudioFormatAppleLossless] forKey:AVFormatIDKey];

    [recordSetting setValue:[NSNumbernumberWithFloat:22100.0] forKey:AVSampleRateKey];

    [recordSetting setValue:[NSNumber numberWithInt: 2] forKey:AVNumberOfChannelsKey];

    [recordSetting setValue:[NSNumbernumberWithInt:16] forKey:AVLinearPCMBitDepthKey];

    [recordSetting setValue:[NSNumbernumberWithBool:NO] forKey:AVLinearPCMIsBigEndianKey];

    [recordSetting setValue:[NSNumbernumberWithBool:NO] forKey:AVLinearPCMIsFloatKey];

    

    // File URL

NSURL *url = [NSURLfileURLWithPath:FILEPATH];

    

    NSLog(@"Path : %@", [url absoluteString]);

    NSError *err = nil;

    if([self.recorderisRecording])

    {

        [self.recorder stop];

        self.recorder = nil;

    }

    self.recorder = [[ AVAudioRecorder alloc] initWithURL:url settings:recordSetting error:&err];

    [self.recordersetDelegate:self];

    if(err)

        NSLog(@"ERROR : %@", err);

    BOOL st = [self.recorder prepareToRecord];

    if(!st){

        NSLog(@"222Failed");

    }

    self.recorder.meteringEnabled = YES;

    BOOL status = [self.recorder record];

    if(!status)

        NSLog(@"1111Failed");

 

// Set a timer to monitor levels, current time

timer = [NSTimerscheduledTimerWithTimeInterval:0.1ftarget:selfselector:@selector(updateMeters) userInfo:nilrepeats:YES];

 

// Update the navigation bar

self.navigationItem.rightBarButtonItem = BARBUTTON(@"Done", @selector(stopRecording));

self.navigationItem.leftBarButtonItem = SYSBARBUTTON(UIBarButtonSystemItemPause, self, @selector(pauseRecording));

    

returnYES;

}

 

- (BOOL) startAudioSession

{

// Prepare the audio session

NSError *error;

self.session = [AVAudioSession sharedInstance];

 

if (![self.session setCategory:AVAudioSessionCategoryPlayAndRecord error:&error])

{

NSLog(@"Error: %@", [error localizedDescription]);

returnNO;

}

 

if (![self.session setActive:YES error:&error])

{

NSLog(@"Error: %@", [error localizedDescription]);

returnNO;

}

 

return self.session.inputIsAvailable;

}

 

- (void) viewDidLoad

{

self.navigationController.navigationBar.tintColor = COOKBOOK_PURPLE_COLOR;

self.title = @"Audio Recorder";

 

if ([selfstartAudioSession])

self.navigationItem.rightBarButtonItem = BARBUTTON(@"Record", @selector(record));

else

self.title = @"No Audio Input Available";

}

@end

 

@interface TestBedAppDelegate : NSObject <UIApplicationDelegate>

@end

 

@implementation TestBedAppDelegate

- (void)applicationDidFinishLaunching:(UIApplication *)application {

UIWindow *window = [[UIWindowalloc] initWithFrame:[[UIScreenmainScreen] bounds]];

UINavigationController *nav = [[UINavigationControlleralloc] initWithRootViewController:[[TestBedViewControlleralloc] init]];

[window addSubview:nav.view];

[window makeKeyAndVisible];

}

@end

 

int main(int argc, char *argv[])

{

NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];

int retVal = UIApplicationMain(argc, argv, nil, @"TestBedAppDelegate");

[pool release];

return retVal;

}