mirror of
https://gitee.com/mirrors_PX4/PX4-Autopilot.git
synced 2026-05-21 05:17:35 +08:00
Daniel Agar
68 lines
2.2 KiB
C++
68 lines
2.2 KiB
C++
/****************************************************************************
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*
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* Copyright (c) 2012-2019 PX4 Development Team. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name PX4 nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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#include "NullMixer.hpp"
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#include <math.h>
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#include <cstring>
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#include <ctype.h>
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unsigned
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NullMixer::mix(float *outputs, unsigned space)
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{
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if (space > 0) {
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*outputs = NAN;
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return 1;
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}
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return 0;
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}
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NullMixer *
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NullMixer::from_text(const char *buf, unsigned &buflen)
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{
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NullMixer *nm = nullptr;
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/* enforce that the mixer ends with a new line */
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if (!string_well_formed(buf, buflen)) {
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return nullptr;
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}
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if ((buflen >= 2) && (buf[0] == 'Z') && (buf[1] == ':')) {
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nm = new NullMixer;
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buflen -= 2;
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}
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return nm;
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}
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