[FFmpeg-devel] [PATCH 6/8] avformat/rtpdec_rfc4175: add support for TCS

[lance.lmwang at gmail.com]

On Mon, Oct 11, 2021 at 05:01:54PM +0200, Andreas Rheinhardt wrote:
> lance.lmwang at gmail.com:
> > From: Limin Wang <lance.lmwang at gmail.com>
> > 
> > Signed-off-by: Limin Wang <lance.lmwang at gmail.com>
> > ---
> >  libavformat/rtpdec_rfc4175.c | 19 +++++++++++++++++++
> >  1 file changed, 19 insertions(+)
> > 
> > diff --git a/libavformat/rtpdec_rfc4175.c b/libavformat/rtpdec_rfc4175.c
> > index 367567d..db6b9b8 100644
> > --- a/libavformat/rtpdec_rfc4175.c
> > +++ b/libavformat/rtpdec_rfc4175.c
> > @@ -30,6 +30,7 @@
> >  struct PayloadContext {
> >      char *sampling;
> >      char *framerate;
> > +    char *TCS;
> >      int depth;
> >      int width;
> >      int height;
> > @@ -66,6 +67,21 @@ static int rfc4175_parse_format(AVStream *stream, PayloadContext *data)
> >          return AVERROR_INVALIDDATA;
> >      }
> >  
> > +    if (!data->TCS)
> > +        stream->codecpar->color_trc = AVCOL_TRC_UNSPECIFIED;
> > +    else if (!strncmp(data->TCS, "SDR", 3))
> > +        stream->codecpar->color_trc = AVCOL_TRC_BT709;
> > +    else if (!strncmp(data->TCS, "PQ", 2))
> > +        stream->codecpar->color_trc = AVCOL_TRC_SMPTE2084;
> > +    else if (!strncmp(data->TCS, "HLG", 3))
> > +        stream->codecpar->color_trc = AVCOL_TRC_ARIB_STD_B67;
> > +    else if (!strncmp(data->TCS, "LINEAR", 6))
> > +        stream->codecpar->color_trc = AVCOL_TRC_LINEAR;
> > +    else if (!strncmp(data->TCS, "ST428-1", 7))
> > +        stream->codecpar->color_trc = AVCOL_TRC_SMPTEST428_1;
> > +    else if (!strncmp(data->TCS, "UNSPECIFIED", 11))
> > +        stream->codecpar->color_trc = AVCOL_TRC_UNSPECIFIED;
> > +
> >      desc = av_pix_fmt_desc_get(pixfmt);
> >      stream->codecpar->format = pixfmt;
> >      stream->codecpar->codec_tag = tag;
> > @@ -97,6 +113,8 @@ static int rfc4175_parse_fmtp(AVFormatContext *s, AVStream *stream,
> >          data->depth = atoi(value);
> >      else if (!strncmp(attr, "exactframerate", 14))
> >          data->framerate = av_strdup(value);
> > +    else if (!strncmp(attr, "TCS", 3))
> > +        data->TCS = av_strdup(value);
> >  
> >      return 0;
> >  }
> > @@ -126,6 +144,7 @@ static int rfc4175_parse_sdp_line(AVFormatContext *s, int st_index,
> >          ret = rfc4175_parse_format(stream, data);
> >          av_freep(&data->sampling);
> >          av_freep(&data->framerate);
> > +        av_freep(&data->TCS);
> >  
> >          return ret;
> >      }
> > 
> 
> Same here: Why an (unchecked) temporary value?

OK, will updated to remove the temporary value.

> 
> - Andreas
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-- 
Thanks,
Limin Wang