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Subject: Re: [FFmpeg-devel] [PATCH v1 17/19] avcodec/vvc: support fields
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toqsxw@gmail.com:
> From: Wu Jianhua <toqsxw@outlook.com>
>
> passed files:
> FIELD_A_Panasonic_4.bit
> FIELD_B_Panasonic_2.bit
>
> Signed-off-by: Wu Jianhua <toqsxw@outlook.com>
> ---
> libavcodec/vvc/refs.c | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
> diff --git a/libavcodec/vvc/refs.c b/libavcodec/vvc/refs.c
> index cfbc2977c0..79967b77d3 100644
> --- a/libavcodec/vvc/refs.c
> +++ b/libavcodec/vvc/refs.c
> @@ -160,6 +160,14 @@ static VVCFrame *alloc_frame(VVCContext *s, VVCFrameContext *fc)
> frame->ref_width = pps->r->pps_pic_width_in_luma_samples - win->left_offset - win->right_offset;
> frame->ref_height = pps->r->pps_pic_height_in_luma_samples - win->bottom_offset - win->top_offset;
>
> + if (fc->sei.frame_field_info.present) {
> + if (fc->sei.frame_field_info.picture_struct == AV_PICTURE_STRUCTURE_TOP_FIELD)
> + frame->frame->flags |= AV_FRAME_FLAG_TOP_FIELD_FIRST;
> + if (fc->sei.frame_field_info.picture_struct == AV_PICTURE_STRUCTURE_TOP_FIELD ||
> + fc->sei.frame_field_info.picture_struct == AV_PICTURE_STRUCTURE_BOTTOM_FIELD)
> + frame->frame->flags |= AV_FRAME_FLAG_INTERLACED;
> + }
> +
> frame->progress = alloc_progress();
> if (!frame->progress)
> goto fail;
Does this output the fields separately? Normally, FFmpeg/libavcodec only
outputs actual frames and marks these with the AV_FRAME_FLAG_INTERLACED
flag if the content is interlaced. AV_FRAME_FLAG_INTERLACED does not
mean that it is a single field.
- Andreas
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