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Subject: Re: [FFmpeg-devel] [PATCH v1 14/19]
avcodec/cbs_sei_syntax_template: add sei message frame_field_information
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toqsxw@gmail.com:
> From: Wu Jianhua <toqsxw@outlook.com>
>
> Signed-off-by: Wu Jianhua <toqsxw@outlook.com>
> ---
> libavcodec/cbs_h2645.c | 6 ++++++
> libavcodec/cbs_sei.h | 12 ++++++++++++
> libavcodec/cbs_sei_syntax_template.c | 26 ++++++++++++++++++++++++++
> 3 files changed, 44 insertions(+)
>
> diff --git a/libavcodec/cbs_h2645.c b/libavcodec/cbs_h2645.c
> index c868770209..6677134d77 100644
> --- a/libavcodec/cbs_h2645.c
> +++ b/libavcodec/cbs_h2645.c
> @@ -2199,6 +2199,12 @@ static const SEIMessageTypeDescriptor cbs_sei_common_types[] = {
> sizeof(SEIRawDisplayOrientation),
> SEI_MESSAGE_RW(sei, display_orientation)
> },
> + {
> + SEI_TYPE_FRAME_FIELD_INFO,
> + 1, 0,
> + sizeof(SEIRawFrameFieldInformation),
> + SEI_MESSAGE_RW(sei, frame_field_information)
> + },
> SEI_MESSAGE_TYPE_END,
> };
>
> diff --git a/libavcodec/cbs_sei.h b/libavcodec/cbs_sei.h
> index 7be12e33e0..81867b79a7 100644
> --- a/libavcodec/cbs_sei.h
> +++ b/libavcodec/cbs_sei.h
> @@ -125,6 +125,18 @@ typedef struct SEIRawDisplayOrientation {
> uint8_t display_orientation_reserved_zero_3bits;
> } SEIRawDisplayOrientation;
>
> +typedef struct SEIRawFrameFieldInformation {
> + uint8_t ffi_field_pic_flag;
> + uint8_t ffi_bottom_field_flag;
> + uint8_t ffi_pairing_indicated_flag;
> + uint8_t ffi_paired_with_next_field_flag;
> + uint8_t ffi_display_fields_from_frame_flag;
> + uint8_t ffi_top_field_first_flag;
> + uint8_t ffi_display_elemental_periods_minus1;
> + uint8_t ffi_source_scan_type;
> + uint8_t ffi_duplicate_flag;
> +} SEIRawFrameFieldInformation;
> +
> typedef struct SEIRawMessage {
> uint32_t payload_type;
> uint32_t payload_size;
> diff --git a/libavcodec/cbs_sei_syntax_template.c b/libavcodec/cbs_sei_syntax_template.c
> index fb19f6ee42..e6863a0fd7 100644
> --- a/libavcodec/cbs_sei_syntax_template.c
> +++ b/libavcodec/cbs_sei_syntax_template.c
> @@ -295,6 +295,32 @@ SEI_FUNC(display_orientation, (CodedBitstreamContext *ctx, RWContext *rw,
> return 0;
> }
>
> +SEI_FUNC(frame_field_information, (CodedBitstreamContext *ctx, RWContext *rw,
> + SEIRawFrameFieldInformation *current,
> + SEIMessageState *state))
> +{
> + int err;
> +
> + HEADER("Frame-field information");
> +
> + flag(ffi_field_pic_flag);
> + if (current->ffi_field_pic_flag) {
> + flag(ffi_bottom_field_flag);
> + flag(ffi_pairing_indicated_flag);
> + if (current->ffi_pairing_indicated_flag)
> + flag(ffi_paired_with_next_field_flag);
> + } else {
> + flag(ffi_display_fields_from_frame_flag);
> + if (current->ffi_display_fields_from_frame_flag)
> + flag(ffi_top_field_first_flag);
> + u(8, ffi_display_elemental_periods_minus1, 0, 0xff);
> + }
> + u(2, ffi_source_scan_type, 0, 3);
> + flag(ffi_duplicate_flag);
> +
> + return 0;
> +}
> +
> static int FUNC(message)(CodedBitstreamContext *ctx, RWContext *rw,
> SEIRawMessage *current)
> {
This does really not seem like a common SEI, yet you add it to the
common ones.
- Andreas
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