ffmpeg/FFmpeg
1
0
Fork 0
mirror of https://git.ffmpeg.org/ffmpeg.git synced 2024-09-20 13:26:39 +00:00
Code Issues Packages Projects Releases Wiki Activity

lavc: prettify printing of some codec tags which contains non alphanumeric characters

Browse Source 
Make av_get_codec_tag_string() show codec tag string characters in a more
intelligible ways. For example the ascii char "@" is used as a number, so
should be displayed like "[64]" rather than as a printable character.

Apart alphanumeric chars, only the characters ' ' and '.' are used
literally in codec tags, all the other characters represent numbers.
This commit is contained in:
Stefano Sabatini 2012-05-26 01:38:03 +02:00
parent fa6cb2fdff
commit 67b7631040
1 changed files with 6 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
libavcodec/utils.c
View File

@ -1774,9 +1774,14 @@ size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_ta
{
int i, len, ret = 0;
#define IS_PRINT(x) \
(((x) >= '0' && (x) <= '9') || \
((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
((x) == '.' || (x) == ' '))
for (i = 0; i < 4; i++) {
len = snprintf(buf, buf_size,
isprint(codec_tag&0xFF) ? "%c" : "[%d]", codec_tag&0xFF);
IS_PRINT(codec_tag&0xFF) ? "%c" : "[%d]", codec_tag&0xFF);
buf += len;
buf_size = buf_size > len ? buf_size - len : 0;
ret += len;