[speex-dev] LIB usage

[Jean-Marc Valin]

(sorry for the delay)
Looking at your code, I see a couple errors, but I don't see how they
can result in a crash. First, I don't see why you read 1024 samples at a
time, while it should be frame_size. Also, you don't really need
nBytesFrame, as the 3rd argument to speex_bits_write is just the max
size of your array (just to prevent possible overflows), not the exact
amount you want to read.

The only thing I see is if your byte_ptr array is too small to hold one
frame, it may crash. Otherwise, maybe if you tell me where exactly the
crash occurs (preferable using ElectricFence or valgrind), it would
help.

        Jean-Marc

> I'm trying to use the speexlib but I just can't do it. I've made just like the 
> example (on the site) says. Some times I get SIGFAULT. Also, I'm reading the 
> input_frames from /dev/dsp (directly). What is missing here?
> 
>   speex_bits_init(&bits);
>   enc_state = speex_encoder_init(&speex_nb_mode);
> 
>   speex_encoder_ctl(enc_state, SPEEX_GET_FRAME_SIZE, &frame_size);
> 
>   for(n=0; n<100; n++)
>   {
>     read_from_dev(fd1, (float *)input_frame, 1024);
> 
>     speex_bits_reset(&bits);
>     speex_encode(enc_state, input_frame, &bits);
>     nBytesFrame = speex_bits_nbytes(&bits);     
>     nbBytes = speex_bits_write(&bits, byte_ptr, nBytesFrame);
> 
>     write_to_file(fd2, byte_ptr, nbBytes);
>   }
>    
>   speex_bits_destroy(&bits);
>   speex_encoder_destroy(enc_state);
> 
> 
> Thank you
> Bruno Rodrigues
> --- >8 ----
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-- 
Jean-Marc Valin, M.Sc.A.
LABORIUS (http://www.gel.usherb.ca/laborius)
Université de Sherbrooke, Québec, Canada

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