making act segmenter

1 files changed, 99 insertions, 0 deletions

diff --git a/ffmpeg/libavutil/error.c b/ffmpeg/libavutil/error.c
new file mode 100644
index 0000000..bd66354
--- /dev/null
+++ b/ffmpeg/libavutil/error.c
@@ -0,0 +1,99 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#undef _GNU_SOURCE
+#include "avutil.h"
+#include "avstring.h"
+#include "common.h"
+
+struct error_entry {
+    int num;
+    const char *tag;
+    const char *str;
+};
+
+#define ERROR_TAG(tag) AVERROR_##tag, #tag
+static const struct error_entry error_entries[] = {
+    { ERROR_TAG(BSF_NOT_FOUND),      "Bitstream filter not found"                     },
+    { ERROR_TAG(BUG),                "Internal bug, should not have happened"         },
+    { ERROR_TAG(BUG2),               "Internal bug, should not have happened"         },
+    { ERROR_TAG(BUFFER_TOO_SMALL),   "Buffer too small"                               },
+    { ERROR_TAG(DECODER_NOT_FOUND),  "Decoder not found"                              },
+    { ERROR_TAG(DEMUXER_NOT_FOUND),  "Demuxer not found"                              },
+    { ERROR_TAG(ENCODER_NOT_FOUND),  "Encoder not found"                              },
+    { ERROR_TAG(EOF),                "End of file"                                    },
+    { ERROR_TAG(EXIT),               "Immediate exit requested"                       },
+    { ERROR_TAG(EXTERNAL),           "Generic error in an external library"           },
+    { ERROR_TAG(FILTER_NOT_FOUND),   "Filter not found"                               },
+    { ERROR_TAG(INVALIDDATA),        "Invalid data found when processing input"       },
+    { ERROR_TAG(MUXER_NOT_FOUND),    "Muxer not found"                                },
+    { ERROR_TAG(OPTION_NOT_FOUND),   "Option not found"                               },
+    { ERROR_TAG(PATCHWELCOME),       "Not yet implemented in FFmpeg, patches welcome" },
+    { ERROR_TAG(PROTOCOL_NOT_FOUND), "Protocol not found"                             },
+    { ERROR_TAG(STREAM_NOT_FOUND),   "Stream not found"                               },
+    { ERROR_TAG(UNKNOWN),            "Unknown error occurred"                         },
+    { ERROR_TAG(EXPERIMENTAL),       "Experimental feature"                           },
+};
+
+int av_strerror(int errnum, char *errbuf, size_t errbuf_size)
+{
+    int ret = 0, i;
+    const struct error_entry *entry = NULL;
+
+    for (i = 0; i < FF_ARRAY_ELEMS(error_entries); i++) {
+        if (errnum == error_entries[i].num) {
+            entry = &error_entries[i];
+            break;
+        }
+    }
+    if (entry) {
+        av_strlcpy(errbuf, entry->str, errbuf_size);
+    } else {
+#if HAVE_STRERROR_R
+        ret = AVERROR(strerror_r(AVUNERROR(errnum), errbuf, errbuf_size));
+#else
+        ret = -1;
+#endif
+        if (ret < 0)
+            snprintf(errbuf, errbuf_size, "Error number %d occurred", errnum);
+    }
+
+    return ret;
+}
+
+#ifdef TEST
+
+#undef printf
+
+int main(void)
+{
+    int i;
+
+    for (i = 0; i < FF_ARRAY_ELEMS(error_entries); i++) {
+        const struct error_entry *entry = &error_entries[i];
+        printf("%d: %s [%s]\n", entry->num, av_err2str(entry->num), entry->tag);
+    }
+
+    for (i = 0; i < 256; i++) {
+        printf("%d: %s\n", -i, av_err2str(-i));
+    }
+
+    return 0;
+}
+
+#endif /* TEST */