[Speex-dev] speex on embedded processor
peter.ruckle at digitalallyinc.com
Thu Jan 31 06:12:40 PST 2008
I need to shrink speex so it will fit on an embedded processor along with some other code. The chip has only 20k of ram. I have done some work with libspeex.dsp by removing references to all modes but narrow band 8000 hz (submode 3). I used the defines: FIXED_POINT, DISABLE_FLOATING_POINT_API, DISABLE_VBR. I also removed the structures for the other submodes and the functions that they called. I reduced the NB_DEC_STACK and NB_ENC_STACK to the smallest values and minimized the heap based on all calls to calloc. I haven't optimized the call stack yet. I reduced the ram usage to around 6k. The problem is when I added the preprocess functionality, the ram usage went to around 20k. I need to know what can be removed or reduced from the S[eexPreprocessState structure. The only functionality we want to use is the denoise option. We don't want vbr or echo cancellation. I only see about 1k that is directly related that can be removed from the structure. Are there any other buffers in the structure that can be removed or a way to reduce the size of some buffers.
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the Speex-dev