[FFmpeg-devel] [PATCH v9 3/4] avfilter/vf_showinfo: display H.26[45] user data unregistered sei message

[Limin Wang]

ping this patch for merge, it'll dump the metadata and don't change API.


On Tue, Mar 17, 2020 at 06:54:08PM +0800, lance.lmwang at gmail.com wrote:
> From: Limin Wang <lance.lmwang at gmail.com>
> 
> Signed-off-by: Limin Wang <lance.lmwang at gmail.com>
> ---
>  libavfilter/vf_showinfo.c | 37 +++++++++++++++++++++++++++++++++++++
>  1 file changed, 37 insertions(+)
> 
> diff --git a/libavfilter/vf_showinfo.c b/libavfilter/vf_showinfo.c
> index 79b79db..36b9bf1 100644
> --- a/libavfilter/vf_showinfo.c
> +++ b/libavfilter/vf_showinfo.c
> @@ -23,6 +23,7 @@
>   */
>  
>  #include <inttypes.h>
> +#include <ctype.h>
>  
>  #include "libavutil/bswap.h"
>  #include "libavutil/adler32.h"
> @@ -170,6 +171,39 @@ static void dump_content_light_metadata(AVFilterContext *ctx, AVFrameSideData *s
>             metadata->MaxCLL, metadata->MaxFALL);
>  }
>  
> +static int string_is_print(const uint8_t *str)
> +{
> +    while (isprint(*str)) str++;
> +    return !*str;
> +}
> +
> +static void dump_sei_unregistered_metadata(AVFilterContext *ctx, AVFrameSideData *sd)
> +{
> +    const int uuid_size = 16;
> +    uint8_t *user_data = sd->data;
> +
> +    if (sd->size < uuid_size) {
> +        av_log(ctx, AV_LOG_ERROR, "invalid data(%d < UUID(%d-bytes))", sd->size, uuid_size);
> +        return;
> +    }
> +
> +    av_log(ctx, AV_LOG_INFO, "User Data Unregistered:\n");
> +    av_log(ctx, AV_LOG_INFO, "UUID=");
> +    for (int i = 0; i < uuid_size; i++) {
> +        av_log(ctx, AV_LOG_INFO, "%02x", user_data[i]);
> +        if (i == 3 || i == 5 || i == 7 || i == 9)
> +            av_log(ctx, AV_LOG_INFO, "-");
> +    }
> +    av_log(ctx, AV_LOG_INFO, "\n");
> +
> +    user_data += uuid_size;
> +    /* Only print the user data details if it's string */
> +    if (string_is_print(user_data)) {
> +        av_log(ctx, AV_LOG_INFO, "User Data=");
> +        av_log(ctx, AV_LOG_INFO, "%s", user_data);
> +    }
> +}
> +
>  static void dump_color_property(AVFilterContext *ctx, AVFrame *frame)
>  {
>      const char *color_range_str     = av_color_range_name(frame->color_range);
> @@ -347,6 +381,9 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
>              av_log(ctx, AV_LOG_INFO, "GOP timecode - %s", tcbuf);
>              break;
>          }
> +        case AV_FRAME_DATA_SEI_UNREGISTERED:
> +            dump_sei_unregistered_metadata(ctx, sd);
> +            break;
>          default:
>              av_log(ctx, AV_LOG_WARNING, "unknown side data type %d (%d bytes)",
>                     sd->type, sd->size);
> -- 
> 2.9.5
> 

-- 
Thanks,
Limin Wang