[FFmpeg-devel] [PATCH v1 14/19] avcodec/cbs_sei_syntax_template: add sei message frame_field_information

[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)
 {
-- 
2.44.0.windows.1

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