On Sun, Apr 29, 2018 at 11:23:17PM +0000, Kieran Kunhya wrote:
> On Sun, 29 Apr 2018 at 22:57 Michael Niedermayer <mich...@niedermayer.cc>
> wrote:
>
> > Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>
> > ---
> > libavformat/m4vdec.c | 6 ++++++
> > 1 file changed, 6 insertions(+)
> >
> > diff --git a/libavformat/m4vdec.c b/libavformat/m4vdec.c
> > index 34d434f7d2..be30f86a5c 100644
> > --- a/libavformat/m4vdec.c
> > +++ b/libavformat/m4vdec.c
> > @@ -29,6 +29,7 @@ static int mpeg4video_probe(AVProbeData *probe_packet)
> > {
> > uint32_t temp_buffer = -1;
> > int VO = 0, VOL = 0, VOP = 0, VISO = 0, res = 0;
> > + int res_main = 0;
> > int i;
> >
> > for (i = 0; i < probe_packet->buf_size; i++) {
> > @@ -46,11 +47,16 @@ static int mpeg4video_probe(AVProbeData *probe_packet)
> > VO++;
> > else if (temp_buffer >= 0x120 && temp_buffer < 0x130)
> > VOL++;
> > + else if (temp_buffer == 0x1B7 || temp_buffer == 0x1B8)
> > + res_main++;
> > else if (!(0x1AF < temp_buffer && temp_buffer < 0x1B7) &&
> > !(0x1B9 < temp_buffer && temp_buffer < 0x1C4))
> > res++;
> > }
> >
> > + if (res_main && 2*res_main < VOP)
> > + res += res_main;
> > +
> > if (VOP >= VISO && VOP >= VOL && VO >= VOL && VOL > 0 && res == 0)
> > return VOP+VO > 4 ? AVPROBE_SCORE_EXTENSION :
> > AVPROBE_SCORE_EXTENSION/2;
> >
>
> Lots of interesting made up numbers here, explanation would be great.
> Kieranwill apply with explanations in comments and names constants where it makes sense Thanks [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB The bravest are surely those who have the clearest vision of what is before them, glory and danger alike, and yet notwithstanding go out to meet it. -- Thucydides
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