[FFmpeg-devel] [PATCH] Add support for AFDs in H.264

[Michael Niedermayer]

On Thu, Jan 13, 2011 at 04:06:49PM -0800, Kieran Kunhya wrote:
> Patch update after review by Ronald on IRC. (yes really, an ffmpeg patch review on irc...)
>  h264.h     |    1 +
>  h264_sei.c |   26 ++++++++++++++++++++++++++
>  2 files changed, 27 insertions(+)
> 587cbd31499accc8ddbff078e37c90c6231ddb2f  0001-Add-support-for-AFDs-to-H.264.patch
> From 077e69784d8d84e5b1746f005258d71f8ecb3ef0 Mon Sep 17 00:00:00 2001
> From: Kieran Kunhya <kieran at kunhya.com>
> Date: Fri, 14 Jan 2011 00:01:31 +0000
> Subject: [PATCH] Add support for AFDs in H.264.
> 
> ---
>  libavcodec/h264.h     |    1 +
>  libavcodec/h264_sei.c |   26 ++++++++++++++++++++++++++
>  2 files changed, 27 insertions(+), 0 deletions(-)
> 
> diff --git a/libavcodec/h264.h b/libavcodec/h264.h
> index 7158d97..d44935e 100644
> --- a/libavcodec/h264.h
> +++ b/libavcodec/h264.h
> @@ -133,6 +133,7 @@ enum {
>  typedef enum {
>      SEI_BUFFERING_PERIOD             =  0, ///< buffering period (H.264, D.1.1)
>      SEI_TYPE_PIC_TIMING              =  1, ///< picture timing
> +    SEI_TYPE_USER_DATA_REGISTERED    =  4, ///< registered user data
>      SEI_TYPE_USER_DATA_UNREGISTERED  =  5, ///< unregistered user data
>      SEI_TYPE_RECOVERY_POINT          =  6  ///< recovery point (frame # to decoder sync)
>  } SEI_Type;
> diff --git a/libavcodec/h264_sei.c b/libavcodec/h264_sei.c
> index 195ea28..3e0c37a 100644
> --- a/libavcodec/h264_sei.c
> +++ b/libavcodec/h264_sei.c
> @@ -95,6 +95,28 @@ static int decode_picture_timing(H264Context *h){
>      return 0;
>  }
>  
> +static int decode_registered_user_data(H264Context *h, int size){
> +    MpegEncContext * const s = &h->s;
> +    uint8_t flag;
> +
> +    if(size == 9){
> +        /* many variations of country and provider code for AFDs so ignore them */
> +        skip_bits(&s->gb, 8);  //itu_t_t35_country_code
> +        skip_bits(&s->gb, 16); //itu_t_t35_provider_code

> +        if(get_bits_long(&s->gb, 32) == MKBETAG('D', 'T', 'G', '1')){

 AV_RL32("DTG1")


[...]

-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Why not whip the teacher when the pupil misbehaves? -- Diogenes of Sinope
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