Re: What is the purpose of AUDIO_IO_DEVICE::io_mode == io_readwrite?
Kai Vehmanen <[email protected]>
| Newsgroups | gmane.comp.audio.ecasound.general |
|---|---|
| Message-ID | <[email protected]> |
Hi, On Wed, 3 Aug 2011, Lorenz Minder wrote: > Hi, > > I have a question regarding the io_mode for an audio device: What is > the purpose of the io_readwrite mode? I was assuming that devices it's analogous to "w+" mode of fopen. Quoting fopen man page: ""w+: Open for reading and writing. The file is created if it does not exist, otherwise it is truncated. The stream is positioned at the beginning'of the file."" Simiarly io_write is similar to "w" mode, i.e. the output is always truncated. > So what is the purpose if io_readwrite in that context, and how is a > device supposed to handle that? The main use case for io_readwrite is the ability to open file outputs in update mode (e.g. to replace only portions of a recording, or continue recording at the end of an existing file). ------------------------------------------------------------------------------ BlackBerry® DevCon Americas, Oct. 18-20, San Francisco, CA The must-attend event for mobile developers. Connect with experts. Get tools for creating Super Apps. See the latest technologies. Sessions, hands-on labs, demos & much more. Register early & save! http://p.sf.net/sfu/rim-blackberry-1 _______________________________________________ Ecasound-list mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/ecasound-list