document the fact that av_new_stream() can't be called in a background thread

Originally committed as revision 25379 to svn://svn.ffmpeg.org/ffmpeg/trunk
14 years ago · 2899a28cdc
parent 6612d8cf31
commit 2899a28cdc
1 changed files with 2 additions and 1 deletions
--- a/libavformat/avformat.h
+++ b/libavformat/avformat.h
@ -363,7 +363,8 @@ typedef struct AVInputFormat {
    /**
     * Read one packet and put it in 'pkt'. pts and flags are also
     * set. 'av_new_stream' can be called only if the flag
-     * AVFMTCTX_NOHEADER is used.
+     * AVFMTCTX_NOHEADER is used and only in the calling thread (not in a
+     * background thread).
     * @return 0 on success, < 0 on error.
     *         When returning an error, pkt must not have been allocated
     *         or must be freed before returning