objective-c - 在 iPhone 上使用 Objective C 将视频上传到 Vimeo

Question

我正在开发一个应用程序，我想从中将视频上传到 Vimeo、Facebook 和 Youtube。 Facebook 和 Youtube 有非常简单的 API，Vimeo 有很好的开发者文档，但没有 Objective C 框架。我见过几个使用 Vimeo 的应用程序，所以我想知道是否有某种我不知道的框架。

Answer 1

大家好。如果您仍然对如何将视频上传到 vimeo 感兴趣，请查看代码。首先，您需要使用 vimeo 注册一个应用程序并获取您的 secret 和消费者 key 。然后您需要从 Google 获取 GTMOAuth 框架，可能还需要 SBJson 框架。不幸的是，目前我没有时间清理下面的代码，但我认为对于那些需要 vimeo 帮助的人来说，这可能总比没有好。本质上，您使用 vimeo 进行身份验证，获得上传票证，使用这张票证上传视频，然后添加标题和一些文字。

下面的代码不会开箱即用，因为连接了几个 View 元素，但它应该能让您了解正在发生的事情。

#define VIMEO_SECRET @"1234567890" 
#define VIMEO_CONSUMER_KEY @"1234567890"
#define VIMEO_BASE_URL @"http://vimeo.com/services/auth/"

#define VIMEO_REQUEST_TOKEN_URL @"http://vimeo.com/oauth/request_token"
#define VIMEO_AUTHORIZATION_URL @"http://vimeo.com/oauth/authorize?permission=write"
#define VIMEO_ACCESS_TOKEN_URL @"http://vimeo.com/oauth/access_token"


#import "MMVimeoUploaderVC.h"
#import "GTMOAuthAuthentication.h"
#import "GTMOAuthSignIn.h"
#import "GTMOAuthViewControllerTouch.h"
#import "JSON.h"


@interface MMVimeoUploaderVC ()

@property (retain) GTMOAuthAuthentication *signedAuth;
@property (retain) NSString *currentTicketID;
@property (retain) NSString *currentVideoID;
@property (assign) BOOL isUploading;
@property (retain) GTMHTTPFetcher *currentFetcher;

@end

@implementation MMVimeoUploaderVC

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
        first = YES;
        [GTMOAuthViewControllerTouch removeParamsFromKeychainForName:@"Vimeo"];

    }
    return self;
}

- (void)stopUpload {
    if ( self.isUploading || self.currentFetcher ) {
        [self.currentFetcher stopFetching];
    }
}

- (void) setProgress:(float) progress {
    // Connect to your views here
}

#pragma mark - handle error

- (void) handleErrorWithText:(NSString *) text {

    //notify your views here

    self.currentFetcher = nil;
    self.isUploading = NO;
    self.progressBar.alpha = 0;
    self.uploadButton.alpha = 1;

}

#pragma mark - interface callbacks

//step one, authorize
- (void)startUpload {

    if ( self.signedAuth ) {
        //authentication present, start upload

    } else {
        //get vimeo authentication
        NSURL *requestURL = [NSURL URLWithString:VIMEO_REQUEST_TOKEN_URL];
        NSURL *accessURL = [NSURL URLWithString:VIMEO_ACCESS_TOKEN_URL];
        NSURL *authorizeURL = [NSURL URLWithString:VIMEO_AUTHORIZATION_URL];
        NSString *scope = @"";

        GTMOAuthAuthentication *auth = [self vimeoAuth];

        // set the callback URL to which the site should redirect, and for which
        // the OAuth controller should look to determine when sign-in has
        // finished or been canceled
        //
        // This URL does not need to be for an actual web page
        [auth setCallback:@"http://www.....com/OAuthCallback"];

        // Display the autentication view
        GTMOAuthViewControllerTouch *viewController;
        viewController = [[[GTMOAuthViewControllerTouch alloc] initWithScope:scope
                                                                    language:nil
                                                             requestTokenURL:requestURL
                                                           authorizeTokenURL:authorizeURL
                                                              accessTokenURL:accessURL
                                                              authentication:auth
                                                              appServiceName:@"Vimeo"
                                                                    delegate:self
                                                            finishedSelector:@selector(viewController:finishedWithAuth:error:)] autorelease];

        [[self navigationController] pushViewController:viewController
                                               animated:YES];
    }

}    


//step two get upload ticket
- (void)viewController:(GTMOAuthViewControllerTouch *)viewController
      finishedWithAuth:(GTMOAuthAuthentication *)auth
                 error:(NSError *)error {
    if (error != nil) {
        [self handleErrorWithText:nil];
    } else {
        self.signedAuth = auth;
        [self startUpload];
    }
}

- (void) startUpload {
    self.isUploading = YES;
    NSURL *url = [NSURL URLWithString:@"http://vimeo.com/api/rest/v2?format=json&method=vimeo.videos.upload.getQuota"];
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
    [self.signedAuth authorizeRequest:request];
    GTMHTTPFetcher* myFetcher = [GTMHTTPFetcher fetcherWithRequest:request];
    [myFetcher beginFetchWithDelegate:self
                    didFinishSelector:@selector(myFetcher:finishedWithData:error:)];
    self.currentFetcher = myFetcher;
}

- (void) myFetcher:(GTMHTTPFetcher *)fetcher finishedWithData:(NSData *)data error:(NSError *) error {
    if (error != nil) {
        [self handleErrorWithText:nil];
        NSLog(@"error %@", error);
    } else {

        NSString *info = [[NSString alloc] initWithData:data encoding:NSASCIIStringEncoding];
        NSDictionary *result = [info JSONValue];

        //quota
        int quota = [[result valueForKeyPath:@"user.upload_space.max"] intValue];

        //get video file size
        NSString *path;
        path = @"local video path";
        NSFileManager *manager = [NSFileManager defaultManager];
        NSDictionary *attrs = [manager attributesOfItemAtPath:path error: NULL];
        UInt32 size = [attrs fileSize];

        if ( size > quota ) {
            [self handleErrorWithText:@"Your Vimeo account quota is exceeded."];
            return;
        }

        //lets assume we have enough quota
        NSURL *url = [NSURL URLWithString:@"http://vimeo.com/api/rest/v2?format=json&method=vimeo.videos.upload.getTicket&upload_method=streaming"];
        NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
        [self.signedAuth authorizeRequest:request];
        GTMHTTPFetcher* myFetcher = [GTMHTTPFetcher fetcherWithRequest:request];
        [myFetcher beginFetchWithDelegate:self
                        didFinishSelector:@selector(myFetcher2:finishedWithData:error:)];

        self.currentFetcher = myFetcher;
    }
}

- (void) myFetcher2:(GTMHTTPFetcher *)fetcher finishedWithData:(NSData *)data error:(NSError *) error {
    if (error != nil) {
        [self handleErrorWithText:nil];
        NSLog(@"error %@", error);
    } else {

        NSString *info = [[NSString alloc] initWithData:data encoding:NSASCIIStringEncoding];
        NSDictionary *result = [info JSONValue];

        //fail here if neccessary TODO
        NSString *urlString = [result valueForKeyPath:@"ticket.endpoint"];
        self.currentTicketID = [result valueForKeyPath:@"ticket.id"];

        if ( [self.currentTicketID length] == 0 || [urlString length] == 0) {
            [self handleErrorWithText:nil];
            return;
        }

        //get video file
        // load the file data
        NSString *path;
        path = [MMMovieRenderer sharedRenderer].localVideoURL;

        //get video file size
        NSFileManager *manager = [NSFileManager defaultManager];
        NSDictionary *attrs = [manager attributesOfItemAtPath:path error: NULL];
        UInt32 size = [attrs fileSize];

        //insert endpoint here
        NSURL *url = [NSURL URLWithString:urlString];
        NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
        [request setHTTPMethod:@"PUT"];
        [request setValue:[NSString stringWithFormat:@"%i", size] forHTTPHeaderField:@"Content-Length"];
        [request setValue:@"video/mp4" forHTTPHeaderField:@"Content-Type"];
        [request setHTTPBody:[NSData dataWithContentsOfFile:path]];

        [self.signedAuth authorizeRequest:request];
        GTMHTTPFetcher* myFetcher = [GTMHTTPFetcher fetcherWithRequest:request];
        myFetcher.sentDataSelector = @selector(myFetcher:didSendBytes:totalBytesSent:totalBytesExpectedToSend:);

        [myFetcher beginFetchWithDelegate:self
                        didFinishSelector:@selector(myFetcher3:finishedWithData:error:)];

        self.currentFetcher = myFetcher;

    }
}

  - (void)myFetcher:(GTMHTTPFetcher *)fetcher
             didSendBytes:(NSInteger)bytesSent
            totalBytesSent:(NSInteger)totalBytesSent
totalBytesExpectedToSend:(NSInteger)totalBytesExpectedToSend {
      NSLog(@"%i / %i", totalBytesSent, totalBytesExpectedToSend);
      [self setProgress:(float)totalBytesSent / (float) totalBytesExpectedToSend];
      self.uploadLabel.text = @"Uploading to Vimeo...";
  }

- (void) myFetcher3:(GTMHTTPFetcher *)fetcher finishedWithData:(NSData *)data error:(NSError *) error {
    if (error != nil) {
        [self handleErrorWithText:nil];
    } else {
        NSString *info = [[NSString alloc] initWithData:data encoding:NSASCIIStringEncoding];

        //finalize upload
        NSString *requestString = [NSString stringWithFormat:@"http://vimeo.com/api/rest/v2?format=json&method=vimeo.videos.upload.complete&ticket_id=%@&filename=%@", self.currentTicketID, @"movie.mov"];

        NSURL *url = [NSURL URLWithString:requestString];
        NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
        [self.signedAuth authorizeRequest:request];
        GTMHTTPFetcher* myFetcher = [GTMHTTPFetcher fetcherWithRequest:request];
        [myFetcher beginFetchWithDelegate:self
                        didFinishSelector:@selector(myFetcher4:finishedWithData:error:)];

        self.currentFetcher = myFetcher;
    }
}

- (void) myFetcher4:(GTMHTTPFetcher *)fetcher finishedWithData:(NSData *)data error:(NSError *) error {
    if (error != nil) {
        [self handleErrorWithText:nil];
    } else {
        //finish upload
        NSString *info = [[NSString alloc] initWithData:data encoding:NSASCIIStringEncoding];
        NSDictionary *result = [info JSONValue];

        self.currentVideoID = [result valueForKeyPath:@"ticket.video_id"];

        if ( [self.currentVideoID length] == 0 ) {
            [self handleErrorWithText:nil];
            return;
        } 

        //set title 
        NSString *title = [MMMovieSettingsManager sharedManager].movieTitle;
        title = [title stringByAddingPercentEscapesUsingEncoding:NSASCIIStringEncoding];
        NSString *requestString = [NSString stringWithFormat:@"http://vimeo.com/api/rest/v2?format=json&method=vimeo.videos.setTitle&video_id=%@&title=%@", self.currentVideoID, title];

        NSLog(@"%@", requestString);

        NSURL *url = [NSURL URLWithString:requestString];
        NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
        [self.signedAuth authorizeRequest:request];
        GTMHTTPFetcher* myFetcher = [GTMHTTPFetcher fetcherWithRequest:request];
        [myFetcher beginFetchWithDelegate:self
                        didFinishSelector:@selector(myFetcher5:finishedWithData:error:)];


    }
}

- (void) myFetcher5:(GTMHTTPFetcher *)fetcher finishedWithData:(NSData *)data error:(NSError *) error {
    if (error != nil) {
        [self handleErrorWithText:nil];
        NSLog(@"error %@", error);
    } else {

        //set description 
        NSString *desc = @"Video created with ... iPhone App.";
        desc = [desc stringByAddingPercentEscapesUsingEncoding:NSASCIIStringEncoding];
        NSString *requestString = [NSString stringWithFormat:@"http://vimeo.com/api/rest/v2?format=json&method=vimeo.videos.setDescription&video_id=%@&description=%@", self.currentVideoID, desc];

        NSURL *url = [NSURL URLWithString:requestString];
        NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
        [self.signedAuth authorizeRequest:request];
        GTMHTTPFetcher* myFetcher = [GTMHTTPFetcher fetcherWithRequest:request];
        [myFetcher beginFetchWithDelegate:self
                        didFinishSelector:@selector(myFetcher6:finishedWithData:error:)];

    }
}

- (void) myFetcher6:(GTMHTTPFetcher *)fetcher finishedWithData:(NSData *)data error:(NSError *) error {
    if (error != nil) {
        [self handleErrorWithText:nil];
        NSLog(@"error %@", error);
    } else {

        //done
        //alert your views that the upload has been completed 
    }
}


- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view from its nib.
    [self setProgress:0];
}

- (void) viewDidDisappear:(BOOL)animated  {
    [super viewDidDisappear:animated];
    [GTMOAuthViewControllerTouch removeParamsFromKeychainForName:@"Vimeo"];
}

#pragma mark - oauth stuff

- (GTMOAuthAuthentication *)vimeoAuth {
    NSString *myConsumerKey = VIMEO_CONSUMER_KEY;    // pre-registered with service
    NSString *myConsumerSecret = VIMEO_SECRET; // pre-assigned by service

    GTMOAuthAuthentication *auth;
    auth = [[[GTMOAuthAuthentication alloc] initWithSignatureMethod:kGTMOAuthSignatureMethodHMAC_SHA1
                                                        consumerKey:myConsumerKey
                                                         privateKey:myConsumerSecret] autorelease];

    // setting the service name lets us inspect the auth object later to know
    // what service it is for
    auth.serviceProvider = @"Vimeo";

    return auth;
}

@end