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From: toqsxw@gmail.com
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To: ffmpeg-devel@ffmpeg.org
Date: Wed, 2 Apr 2025 01:16:11 +0800
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Subject: [FFmpeg-devel] [PATCH v1 14/19] avcodec/cbs_sei_syntax_template:
add sei message frame_field_information
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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)
{
--
2.44.0.windows.1
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