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2014/10/15 ¤U¤È 10:05:24
iphone Programming Glossary: compressediOS: Get pixel-by-pixel data from camera http://stackoverflow.com/questions/10865100/ios-get-pixel-by-pixel-data-from-camera but I don't really see how. So Can this be done If so how Would I be getting raw image data or data that's been JPEG compressed iphone ios camera avfoundation pixel share improve this question AV Foundation can give you back the raw bytes for..
How can I upload a photo to a server with the iPhone? http://stackoverflow.com/questions/125306/how-can-i-upload-a-photo-to-a-server-with-the-iphone @end Uploader @implementation EPUploader Private Uploader Private upload Uploads the given file. The file is compressed before beign uploaded. The data is uploaded using an HTTP POST command. Results None Side effects None void upload.. NO return if data length 0 There's no data treat this the same as no file. self uploadSucceeded YES return NSData compressedData self compress data ASSERT compressedData compressedData length 0 if compressedData compressedData length 0 self uploadSucceeded.. data treat this the same as no file. self uploadSucceeded YES return NSData compressedData self compress data ASSERT compressedData compressedData length 0 if compressedData compressedData length 0 self uploadSucceeded NO return NSURLRequest urlRequest..
http://stackoverflow.com/questions/230984/compression-api-on-the-iphone can compress its output and the iPhone can consume that. The scenario we have is exactly the reverse. We'll be POSTing compressed content to the web service. We're not concerned with compression going the other way. iphone compression share improve..
Select videos using UIImagePickerController in 2G/3G http://stackoverflow.com/questions/2758466/select-videos-using-uiimagepickercontroller-in-2g-3g Regards Raj Pawan iphone cocoa touch uiimagepickercontroller share improve this question As the videos are always compressed after being picked the raw video recorder files are very big and the 2G 3G models not being able to hardware encode decode..
Compress/Decompress NSString in objective-c (iphone) using GZIP or deflate http://stackoverflow.com/questions/3015904/compress-decompress-nsstring-in-objective-c-iphone-using-gzip-or-deflate seem to support the compression of dynamic responses yet long story so I decided to get around it by returning an uncompressed JSON package which contains a compressed using GZIP string. e.g Error null IsCompressed true Success true Value vWsAAB LCAAAAAAAB..etc.... responses yet long story so I decided to get around it by returning an uncompressed JSON package which contains a compressed using GZIP string. e.g Error null IsCompressed true Success true Value vWsAAB LCAAAAAAAB..etc.. ... where value is the compressed.. using GZIP string. e.g Error null IsCompressed true Success true Value vWsAAB LCAAAAAAAB..etc.. ... where value is the compressed string of a complex object represented in JSON. This was really easy to implement on the server but for the life of me I..
Understanding the memory consumption on iPhone http://stackoverflow.com/questions/363493/understanding-the-memory-consumption-on-iphone images get once they are loaded into openGL actually use a lot of memory Excerpt Textures even if they're made from compressed images use a lot of your application's memory heap because they have to be expanded in memory to be used. Every pixel takes..
http://stackoverflow.com/questions/3760924/set-line-height-in-uitextview to change it at runtime. The problem is that the default line height is just WAY too small. Text will look extremely compressed and is a nightmare when trying to write longer texts. thanks Max EDIT I know that there is UIWebView and that it's nice..
When to use PNG or JPG in iPhone development? http://stackoverflow.com/questions/3929281/when-to-use-png-or-jpg-in-iphone-development and require very little extra CPU energy to display. However large PNGs may take longer to read from storage than more compressed image formats and thus be slower to display. JPG's are smaller to store but lossy amount depends on compression level and..
http://stackoverflow.com/questions/412982/iphone-unzip-code gzFile file gzopen path UTF8String rb FILE dest fopen unzipeddest UTF8String w unsigned char buffer CHUNK int uncompressedLength gzread file buffer CHUNK if fwrite buffer 1 uncompressedLength dest uncompressedLength ferror dest NSLog @ error writing.. UTF8String w unsigned char buffer CHUNK int uncompressedLength gzread file buffer CHUNK if fwrite buffer 1 uncompressedLength dest uncompressedLength ferror dest NSLog @ error writing data else fclose dest gzclose file iphone compression.. char buffer CHUNK int uncompressedLength gzread file buffer CHUNK if fwrite buffer 1 uncompressedLength dest uncompressedLength ferror dest NSLog @ error writing data else fclose dest gzclose file iphone compression zip share improve this..
What's the most efficient way of converting a 10 MB JSON response into an NSDictionary? http://stackoverflow.com/questions/4351930/whats-the-most-efficient-way-of-converting-a-10-mb-json-response-into-an-nsdict an endpoint to our backend that provides all the necessary data as a single json response. This results in ~1.5MB compressed or roughly 8 MBs of uncompressed json formatted text. Not much of a problem it downloads in 10 30 seconds and we're using.. provides all the necessary data as a single json response. This results in ~1.5MB compressed or roughly 8 MBs of uncompressed json formatted text. Not much of a problem it downloads in 10 30 seconds and we're using ASIHTTPRequest to write the whole.. seconds and we're using ASIHTTPRequest to write the whole response to disk. Now comes the fun part after reading the uncompressed file into a memory mapped string we use stig's json framework to convert it into an NSDictionary. This has worked very well..
What's the best way of live streaming iphone camera to a media server? http://stackoverflow.com/questions/4474871/whats-the-best-way-of-live-streaming-iphone-camera-to-a-media-server According to this What Techniques Are Best To Live Stream iPhone Video Camera Data To a Computer is possible to get compressed data from iphone camera but as I've been reading in the AVFoundation reference you only get uncompressed data. So the questions.. to get compressed data from iphone camera but as I've been reading in the AVFoundation reference you only get uncompressed data. So the questions are 1 How to get compressed frames and audio from iPhone's camera 2 Encoding uncompressed frames.. as I've been reading in the AVFoundation reference you only get uncompressed data. So the questions are 1 How to get compressed frames and audio from iPhone's camera 2 Encoding uncompressed frames with ffmpeg's API is fast enough for real time streaming..
iPhone:Programmatically compressing recorded video to share? http://stackoverflow.com/questions/5687341/iphoneprogrammatically-compressing-recorded-video-to-share and store in same photo album actual video path itself not anywhere else. I tested the same video is compressed to very small size when i pick from photo library but the same video taken from camera and came via didFinishPickingMediaWithInfo.. when i pick from photo library but the same video taken from camera and came via didFinishPickingMediaWithInfo is not compressed though i used the AVAssetExportSession code below. void imagePickerController UIImagePickerController picker didFinishPickingMediaWithInfo..
How to unzip/extract 7z compressed files in ios http://stackoverflow.com/questions/6592602/how-to-unzip-extract-7z-compressed-files-in-ios to unzip extract 7z compressed files in ios I need to unzip extract 7z compressed files in ios Can anyone say the libraries used to do this where are.. to unzip extract 7z compressed files in ios I need to unzip extract 7z compressed files in ios Can anyone say the libraries used to do this where are those libraries available to download.I there any sample..
jQuery not loading on the iPhone http://stackoverflow.com/questions/792585/jquery-not-loading-on-the-iphone same HTML in Safari on my Macbook jQuery is loading just fine too and working as expected. I've tried both using the compressed jquery 1.3.2.min.js and the development jquery 1.3.2.js and no dice for either. Any ideas jquery iphone uiwebview webkit..
Dispelling the UIImage imageNamed: FUD http://stackoverflow.com/questions/924740/dispelling-the-uiimage-imagenamed-fud always significantly inflates the data size for example a screen sized PNG file might consume a few dozen KBs when compressed but consumes over half a MB decompressed width height 4 . By contrast imageWithContentsOfFile will decompress that image.. size for example a screen sized PNG file might consume a few dozen KBs when compressed but consumes over half a MB decompressed width height 4 . By contrast imageWithContentsOfFile will decompress that image everytime the image data is needed. As you.. originalImage CGImageGetRenderingIntent originalImage CGDataProviderRelease imageDataProvider UIImage decompressedImage UIImage imageWithCGImage image CGImageRelease image The trade off with this code is that the decoded image uses more..
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