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1 /*
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2 Copyright (c) Applied Psychology Unit, Medical Research Council. 1988, 1989
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3 ===========================================================================
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4
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5 Permission to use, copy, modify, and distribute this software without fee
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6 is hereby granted for research purposes, provided that this copyright
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7 notice appears in all copies and in all supporting documentation, and that
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8 the software is not redistributed for any fee (except for a nominal shipping
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9 charge). Anyone wanting to incorporate all or part of this software in a
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10 commercial product must obtain a license from the Medical Research Council.
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11
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12 The MRC makes no representations about the suitability of this
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13 software for any purpose. It is provided "as is" without express or implied
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14 warranty.
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15
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16 THE MRC DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
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17 ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL THE
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18 A.P.U. BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY
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19 DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
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20 AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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21 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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22 */
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23
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24 /*
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25 phase.h
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26 =======
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27
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28 defines for phase compensation functionality
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29
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30 */
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31
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32 #define _PHASE_H_
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33
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34
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35 typedef Pointer FilterState ;
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36 typedef int (*FilterModule)() ;
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37 typedef int PointCount ;
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38
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39 typedef struct _phase_compensator_state PhaseCompensatorState ;
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40
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41 extern PhaseCompensatorState *NewPhaseCompensator() ;
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42 extern PointCount PhaseCompensateFilter() ;
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43 extern void FreeCompensatedFilter() ;
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44
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45 /* private data for phase compensators */
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46
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47
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48 struct _phase_compensator_state {
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49 FilterState filter_state ;
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50 FilterModule filter_module ;
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51 int sample_delay ;
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52 Pointer delay_buffer ;
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53 } ;
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54
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55
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