error.c 2.5 KB

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  1. /*
  2. * This file is part of FFmpeg.
  3. *
  4. * FFmpeg is free software; you can redistribute it and/or
  5. * modify it under the terms of the GNU Lesser General Public
  6. * License as published by the Free Software Foundation; either
  7. * version 2.1 of the License, or (at your option) any later version.
  8. *
  9. * FFmpeg is distributed in the hope that it will be useful,
  10. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  12. * Lesser General Public License for more details.
  13. *
  14. * You should have received a copy of the GNU Lesser General Public
  15. * License along with FFmpeg; if not, write to the Free Software
  16. * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  17. */
  18. #undef _GNU_SOURCE
  19. #include "avutil.h"
  20. #include "avstring.h"
  21. int av_strerror(int errnum, char *errbuf, size_t errbuf_size)
  22. {
  23. int ret = 0;
  24. const char *errstr = NULL;
  25. switch (errnum) {
  26. case AVERROR_BSF_NOT_FOUND: errstr = "Bitstream filter not found" ; break;
  27. case AVERROR_DECODER_NOT_FOUND: errstr = "Decoder not found" ; break;
  28. case AVERROR_DEMUXER_NOT_FOUND: errstr = "Demuxer not found" ; break;
  29. case AVERROR_ENCODER_NOT_FOUND: errstr = "Encoder not found" ; break;
  30. case AVERROR_EOF: errstr = "End of file" ; break;
  31. case AVERROR_EXIT: errstr = "Immediate exit requested" ; break;
  32. case AVERROR_FILTER_NOT_FOUND: errstr = "Filter not found" ; break;
  33. case AVERROR_INVALIDDATA: errstr = "Invalid data found when processing input" ; break;
  34. case AVERROR_MUXER_NOT_FOUND: errstr = "Muxer not found" ; break;
  35. case AVERROR_OPTION_NOT_FOUND: errstr = "Option not found" ; break;
  36. case AVERROR_PATCHWELCOME: errstr = "Not yet implemented in FFmpeg, patches welcome"; break;
  37. case AVERROR_PROTOCOL_NOT_FOUND:errstr = "Protocol not found" ; break;
  38. case AVERROR_STREAM_NOT_FOUND: errstr = "Stream not found" ; break;
  39. }
  40. if (errstr) {
  41. av_strlcpy(errbuf, errstr, errbuf_size);
  42. } else {
  43. #if HAVE_STRERROR_R
  44. ret = strerror_r(AVUNERROR(errnum), errbuf, errbuf_size);
  45. #else
  46. ret = -1;
  47. #endif
  48. if (ret < 0)
  49. snprintf(errbuf, errbuf_size, "Error number %d occurred", errnum);
  50. }
  51. return ret;
  52. }