diff options
Diffstat (limited to 'pjmedia/src/pjmedia-codec/speex/medfilter.c')
-rw-r--r-- | pjmedia/src/pjmedia-codec/speex/medfilter.c | 97 |
1 files changed, 0 insertions, 97 deletions
diff --git a/pjmedia/src/pjmedia-codec/speex/medfilter.c b/pjmedia/src/pjmedia-codec/speex/medfilter.c deleted file mode 100644 index 83872e54..00000000 --- a/pjmedia/src/pjmedia-codec/speex/medfilter.c +++ /dev/null @@ -1,97 +0,0 @@ -/* Copyright (C) 2004 Jean-Marc Valin - File medfilter.c - Median filter - - - Redistribution and use in source and binary forms, with or without - modification, are permitted provided that the following conditions - are met: - - - Redistributions of source code must retain the above copyright - notice, this list of conditions and the following disclaimer. - - - Redistributions in binary form must reproduce the above copyright - notice, this list of conditions and the following disclaimer in the - documentation and/or other materials provided with the distribution. - - - Neither the name of the Xiph.org Foundation nor the names of its - contributors may be used to endorse or promote products derived from - this software without specific prior written permission. - - THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR - CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - -*/ - -#include "medfilter.h" -#include "misc.h" - -MedianFilter *median_filter_new(int N) -{ - MedianFilter *f = (MedianFilter*)speex_alloc(sizeof(MedianFilter)); - f->N = N; - f->ids = (int*)speex_alloc(sizeof(int)*N); - f->val = (float*)speex_alloc(sizeof(float)*N); - f->filled = 0; - return f; -} - -void median_filter_update(MedianFilter *f, float val) -{ - int i=0; - int insert = 0; - while (insert<f->filled && f->val[insert] < val) - { - insert++; - } - if (f->filled == f->N) - { - int remove; - for (remove=0;remove<f->N;remove++) - if (f->ids[remove] == 0) - break; - if (insert>remove) - insert--; - if (insert > remove) - { - for (i=remove;i<insert;i++) - { - f->val[i] = f->val[i+1]; - f->ids[i] = f->ids[i+1]; - } - } else if (insert < remove) - { - for (i=remove;i>insert;i--) - { - f->val[i] = f->val[i-1]; - f->ids[i] = f->ids[i-1]; - } - } - for (i=0;i<f->filled;i++) - f->ids[i]--; - } else { - for (i=f->filled;i>insert;i--) - { - f->val[i] = f->val[i-1]; - f->ids[i] = f->ids[i-1]; - } - f->filled++; - } - f->val[insert]=val; - f->ids[insert]=f->filled-1; -} - -float median_filter_get(MedianFilter *f) -{ - return f->val[f->filled>>1]; -} - |