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https://gitee.com/openharmony/third_party_ffmpeg
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441ea0ce91
number if strerror_r() did not succeed for whatever reason. This avoids the need for the application to fill the string in case strerror_r() fails, for example because the error code is not known. Originally committed as revision 23015 to svn://svn.ffmpeg.org/ffmpeg/trunk
46 lines
1.6 KiB
C
46 lines
1.6 KiB
C
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "avutil.h"
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#include "avstring.h"
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int av_strerror(int errnum, char *errbuf, size_t errbuf_size)
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{
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int ret = 0;
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const char *errstr = NULL;
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switch (errnum) {
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case AVERROR_EOF: errstr = "End of file"; break;
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case AVERROR_INVALIDDATA: errstr = "Invalid data found when processing input"; break;
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case AVERROR_NUMEXPECTED: errstr = "Number syntax expected in filename"; break;
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case AVERROR_PATCHWELCOME: errstr = "Not yet implemented in FFmpeg, patches welcome"; break;
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}
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if (errstr) {
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av_strlcpy(errbuf, errstr, errbuf_size);
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} else {
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#if HAVE_STRERROR_R
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ret = strerror_r(AVUNERROR(errnum), errbuf, errbuf_size);
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#endif
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if (!HAVE_STRERROR_R || ret < 0)
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snprintf(errbuf, errbuf_size, "Error number %d occurred", errnum);
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}
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return ret;
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}
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