[FFmpeg-devel] [PATCH] Add track name information when track is written. - Sponsored by INA

[Cédric Le Barz]

Hi,

I've attached the patch to this mail, in order to solve newlines 
insertion issue.

Regards,

Cédric

Le 29/03/2023 à 23:12, Cédric Le Barz a écrit :
> Add track name information in MXF when track is written.
>
> Signed-off-by: Cedric Le Barz <clebarz at ektacom.com>
> ---
>  ffmpeg/libavformat/mxfenc.c | 24 ++++++++++++++++++++++++
>  1 file changed, 24 insertions(+)
>
> diff --git a/ffmpeg/libavformat/mxfenc.c b/ffmpeg/libavformat/mxfenc.c
> index 3bdf90a..bfbd5a6 100644
> --- a/ffmpeg/libavformat/mxfenc.c
> +++ b/ffmpeg/libavformat/mxfenc.c
> @@ -299,6 +299,8 @@ static const MXFLocalTagPair mxf_local_tag_batch[] 
> = {
>      { 0x4B01, 
> {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, 
> /* Edit Rate */
>      { 0x4B02, 
> {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, 
> /* Origin */
>      { 0x4803, 
> {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, 
> /* Sequence reference */
> +    // Track name
> +    { 0x4802, 
> {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x02,0x01,0x00,0x00,0x00}}, 
> /* TrackName */
>      // Sequence
>      { 0x0201, 
> {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, 
> /* Data Definition UL */
>      { 0x0202, 
> {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, 
> /* Duration */
> @@ -862,7 +864,28 @@ static void mxf_write_track(AVFormatContext *s, 
> AVStream *st, MXFPackage *packag
>       mxf_write_metadata_key(pb, 0x013b00);
>      PRINT_KEY(s, "track key", pb->buf_ptr - 16);
> +
> +    if (st->codecpar) {
> +        static const char * pcTrackName_Video = "Picture" ;
> +        static const char * pcTrackName_Audio = "Sound" ;
> +        static const char * pcTrackName_Anc = "Ancillary" ;
> +        if ( st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO )
> +        {
> +            //TrackName Video
> +            klv_encode_ber_length(pb, 80 + 
> mxf_utf16_local_tag_length(pcTrackName_Video));
> +            mxf_write_local_tag_utf16(s, 0x4802 , pcTrackName_Video);
> +        } else if ( st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO ) {
> +            //TrackName Audio
> +            klv_encode_ber_length(pb, 80 + 
> mxf_utf16_local_tag_length(pcTrackName_Audio));
> +            mxf_write_local_tag_utf16(s, 0x4802, pcTrackName_Audio);
> +        } else {
> +            //TrackName Ancillary
> +            klv_encode_ber_length(pb, 80 + 
> mxf_utf16_local_tag_length(pcTrackName_Anc));
> +            mxf_write_local_tag_utf16(s, 0x4802, pcTrackName_Anc);
> +        }
> +    } else {
>      klv_encode_ber_length(pb, 80);
> +    }
>       // write track uid
>      mxf_write_local_tag(s, 16, 0x3C0A);
> @@ -3383,3 +3406,4 @@ const FFOutputFormat ff_mxf_opatom_muxer = {
>      .p.priv_class      = &mxf_opatom_muxer_class,
>  };
>  +
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From: Cedric Le Barz <clebarz at ektacom.com>
Subject: [PATCH] Add track name information when track is written.
Date: Wed, 29 Mar 2023 23:10:48 +0200
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