[linux-audio-dev] libsamplerate question

[Erik de Castro Lopo]

David wrote:

> I process my input data in one pass using src_simple() and I have to
> compute the length of the output data buffer beforehand. So I did
> somehting like this :
> 
> out_len = (long int) ceil((double) in_len * ratio);
> 
> It seems that my output buffer is always one frame too big (I checked
> this by reading the output_frames_gen field of the SRC_DATA structure
> after the processing is done).
> 
> Is it safe to assume that using floor() instead of ceil() will not lead
> to a too short output buffer in some cases ?

The most you should ever loose is one sample. In addition, src_simple
will not write beyond the length of the output buffer length that
you specify in the output_frames field.

Erik
-- 
+-----------------------------------------------------------+
  Erik de Castro Lopo
+-----------------------------------------------------------+
"I invented the term Object-Oriented, and I can tell you I
did not have C++ in mind." -- Alan Kay