First of all,
bufout_len = 320
is correct since that value is the number of stereo samples. Using 640
would be wrong (and no wonder that it crashes). Secondly,
"speex_resampler_process_interleaved_float" has a bug that keeps it
from
working when it is output limited, so if you ever set "buf_len" to any
value greater than 1764 the resampler will stop functioning properly
from then on. Hope this helps.
--John
Date: Thu, 15 Jul 2010 13:15:32 +0200> From: Ren? Sch?mann<white06tiger at gmx.de>
> Subject: [Speex-dev] Speex Resampler
> To: Speex-dev at xiph.org
> Message-ID:<4C3EEDD4.4010909 at gmx.de>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Hello,
>
> my problem is a bit identical to Devi's except that i try to use
Speex's
> Resampler from SpeexDSP and not "Echo Cancellation" but it
won't work too :P
> I was happy as i heard that Speex includes one, because my Programm or
> better dll i want to build needs to be closed source and so other SRC's
> like the one from Secret Rabbit isn't a choice. It must be LGPL or
else.
>
> But i can't get Speex resampler to work, it just don't gives any
error
> and does like it finished as I've expected but the converted Samples
are
> only in the middle part of the buffer changed. all other one is the same...
> This is my code i tried:
>
> SpeexResamplerState *mspeex_src_state;
> float buf[3528]; //gets my float samples from bass
> float bufout[640]; //speex resample out buffer
> spx_uint32_t buf_len = 0; //set later by bass
> spx_uint32_t bufout_len = 320; //when i use 640 which is correct, the
program crashes.
> int speex_err = 0;
>
> mspeex_src_state =
speex_resampler_init(2,44100,8000,4,&speex_err);
> // other code eg. using bass to feed "buf" and set buf_len
etc. but this part is correct.
> speex_err =
speex_resampler_process_interleaved_float(mspeex_src_state,buf,&buf_len,bufout,&bufout_len);
> // speex_err: 0, buf_len: 1764, bufout_len: 320, so resampler does
like it worked but it doesn't
>
>
> can someone give me an example code or say what's wrong with mine?
>
> Kind Regards
> White-Tiger (Ren? Sch?mann)
>
> PS: i know my English isn't the best, but you can help me by saying
> what's wrong and i try to fix that ;)
>
>
