[FFmpeg-devel] [PATCH 7/7] avcodec/ass: add FFmpeg signature

Timothy Gu timothygu99 at gmail.com
Sun Oct 12 03:58:18 CEST 2014


On Saturday, October 11, 2014, James Almer <jamrial at gmail.com> wrote:

> On 11/10/14 2:59 PM, Clément Bœsch wrote:
> > ---
> >  libavcodec/ass.c | 2 ++
> >  1 file changed, 2 insertions(+)
> >
> > diff --git a/libavcodec/ass.c b/libavcodec/ass.c
> > index ac1bfae..62981b6 100644
> > --- a/libavcodec/ass.c
> > +++ b/libavcodec/ass.c
> > @@ -34,6 +34,7 @@ int ff_ass_subtitle_header(AVCodecContext *avctx,
> >  {
> >      avctx->subtitle_header = av_asprintf(
> >               "[Script Info]\r\n"
> > +             "%s" /* FFmpeg signature */
> >               "ScriptType: v4.00+\r\n"
> >               "PlayResX: 384\r\n"
> >               "PlayResY: 288\r\n"
> > @@ -65,6 +66,7 @@ int ff_ass_subtitle_header(AVCodecContext *avctx,
> >               "\r\n"
> >               "[Events]\r\n"
> >               "Format: Layer, Start, End, Style, Name, MarginL, MarginR,
> MarginV, Effect, Text\r\n",
> > +             (avctx->flags & CODEC_FLAG_BITEXACT) ? "; Script generated
> by FFmpeg/Lavc" AV_STRINGIFY(LIBAVCODEC_VERSION) "\r\n" : "",
> >               font, font_size, color, color, back_color, back_color,
> >               -bold, -italic, -underline, alignment);
>
> I think you wanted to do the inverse here. You can't use version macros
> when bitexact
> is requested.


I think you misread it: the colon is after the
AV_STRINGIFY(LIBAVCODEC_VERSION).


>
> I'd say put "; Script generated by FFmpeg/Lavc\r\n" for bitexact cases,
> and "; Script
> generated by FFmpeg/" LIBAVCODEC_IDENT "\r\n" otherwise.
> That way a signature is always added.
>

 No opinion on this one.

Timothy


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