oggvorbis - Using Vorbis without Ogg? -


i'm wondering why vorbis needs container @ all? know can stick vorbis in ogg container or matroska container, if i'm not going bundle video or other multimedia why can't vorbis data stand alone in own file?

has had experience doing this? googled before searching , found single mention in oggvorbis mailing list no details.

it possible. not need know before hand length of vorbis packet (whether headers or audio) able decode them. without ogg wrapper (or alternative wrapper) miss out on few things, might not important application:

  • the page checksums - not important if reading disk or other rather reliable source
  • the page granule/last sample positions - useful improving seeking performance, , specifying

however, can pretty trivially make pure vorbis bytestream ogg file (given there 1 vorbis stream in it) by:

  1. skipping 26 bytes
  2. n = read 1 byte
  3. countofbytestoread = sum of next n bytes
  4. read countofbytestoread bytes vorbis bytestream
  5. repeat 1-4 until ogg file exhausted

Comments

Post a Comment

Popular posts from this blog

java - Play! framework 2.0: How to display multiple image? -

i need display gallery of photos. here template: @(photos: list[photo]) @title = { <bold>gallery</bold> } @main(title,"photo"){ <ul class="thumbnails"> @for(photo <- photos) { <li class="span3"> <a href="#" class="thumbnail"> <img src="@photo.path" alt=""> </a> </li> } </ul> } and here controller method: public static result getphotos() { return ok(views.html.photo.gallery.render(photo.get())); } and here photo bean : @entity public class photo extends model { @id public long id; @required public string label; public string path; public photo(string path, string label) { this.path = path; this.label = label; } private static finder<long, photo> find = new finder<long, photo>( long.class, photo.class); public static list<phot...
Read more

gmail - Is there any documentation for read-only access to the Google Contacts API? -

i want read-only access user's google contacts. there stackoverflow member wanted this, , received following answer : yes, there is, use https://www.googleapis.com/auth/contacts.readonly scope , "view contacts". this exchange reference read-only access google contacts can find using google. simply using access token obtained attempt read usual google contacts api (i.e. https://www.google.com/m8/feeds ) fails insufficient permissions. similarly, using google contacts api on new target fails 404 errors (for example https://www.googleapis.com/auth/contacts.readonly/default/full ). is there documentation anywhere on how use api, or permissible way access google contacts api full read-write access?
Read more

php - Controller/JToolBar not working in Joomla 2.5 -

relevant code: jtoolbarhelper::custom('savecategories', 'save', '', 'save', false, false); ... <input type="hidden" name="controller" value="easyblogcontroller"> according can dig docs , own previous questions, should call savecategories() function in easyblogcontroller . i've tried setting value easyblog , easyblog.php (file name) current easyblogcontroller (class name). clicking on save button refreshes page. not redirect, echo or var_dump test code put in savecategories() function. var_dump ing jrequest::getvar('controller') , 'task' return correct values. creating controller object , using $controller->execute('task'); works. the values going depend on location of controller trying call, , have couple options here. typically there controller in base folder of component (likely components/com_easyblog) in file called controller.php , class name inside ...
Read more