ffmpeg | branch: master | wm4 <nfx...@googlemail.com> | Fri Apr 1 12:52:12 2016 +0200| [f099cb2f8a51dbe01b0e5bac16f244d534709ca3] | committer: wm4
lavu: improve documentation of some AVFrame functions > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=f099cb2f8a51dbe01b0e5bac16f244d534709ca3 --- libavutil/frame.h | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/libavutil/frame.h b/libavutil/frame.h index 76a8123..89f41fc 100644 --- a/libavutil/frame.h +++ b/libavutil/frame.h @@ -591,6 +591,10 @@ void av_frame_free(AVFrame **frame); * If src is not reference counted, new buffers are allocated and the data is * copied. * + * @warning: dst MUST have been either unreferenced with av_frame_unref(dst), + * or newly allocated with av_frame_alloc() before calling this + * function, or undefined behavior will occur. + * * @return 0 on success, a negative AVERROR on error */ int av_frame_ref(AVFrame *dst, const AVFrame *src); @@ -611,6 +615,10 @@ void av_frame_unref(AVFrame *frame); /** * Move everything contained in src to dst and reset src. + * + * @warning: dst is not unreferenced, but directly overwritten without reading + * or deallocating its contents. Call av_frame_unref(dst) manually + * before calling this function to ensure that no memory is leaked. */ void av_frame_move_ref(AVFrame *dst, AVFrame *src); @@ -626,6 +634,9 @@ void av_frame_move_ref(AVFrame *dst, AVFrame *src); * necessary, allocate and fill AVFrame.extended_data and AVFrame.extended_buf. * For planar formats, one buffer will be allocated for each plane. * + * @warning: if frame already has been allocated, undefined behaviour, including + * memory leaks, can occur. + * * @param frame frame in which to store the new buffers. * @param align required buffer size alignment * _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
