From 4afaf287bb24b06ee13f6d1bb1b074fd258ad441 Mon Sep 17 00:00:00 2001
From: Roz K <roz@rozk.net>
Date: Sat, 4 Oct 2025 04:27:51 +0200
Subject: [PATCH] avframe fields

---
 mp4/libav.py | 31 +++++++++++++++++++++++++------
 1 file changed, 25 insertions(+), 6 deletions(-)

diff --git a/mp4/libav.py b/mp4/libav.py
index 6d044ea..cf9dda0 100644
--- a/mp4/libav.py
+++ b/mp4/libav.py
@@ -40,8 +40,32 @@ AVMEDIA_TYPE_DATA = 2
 AVMEDIA_TYPE_SUBTITLE = 3
 AVMEDIA_TYPE_ATTACHMENT = 4
 
+AV_NUM_DATA_POINTERS = 8
+
+c_uint8_p = ctypes.POINTER(ctypes.c_uint8)
+c_uint8_pp = ctypes.POINTER(c_uint8_p)
+
+class AVRational(ctypes.Structure):
+    _fields_ = [
+        ("num", ctypes.c_int),
+        ("den", ctypes.c_int)]
+
 class AVFrame(ctypes.Structure):
-    pass
+    _fields_ = [
+        ("data", c_uint8_p * AV_NUM_DATA_POINTERS),
+        ("linesize", ctypes.c_int * AV_NUM_DATA_POINTERS),
+        ("extended_data", c_uint8_pp),
+        ("width", ctypes.c_int),
+        ("height", ctypes.c_int),
+        ("nb_samples", ctypes.c_int),
+        ("format", ctypes.c_int),
+        ("key_frame", ctypes.c_int),
+        ("pict_type", ctypes.c_int),
+        ("sample_aspect_ratio", AVRational),
+        ("pts", ctypes.c_int64),
+        ("pkt_dts", ctypes.c_int64),
+        ("time_base", AVRational)]
+        # ...
 
 AVFrame_p = ctypes.POINTER(AVFrame)
 AVFrame_pp = ctypes.POINTER(AVFrame_p)
@@ -51,11 +75,6 @@ class AVCodecParameters(ctypes.Structure):
 
 AVCodecParameters_p = ctypes.POINTER(AVCodecParameters)
 
-class AVRational(ctypes.Structure):
-    _fields_ = [
-        ("num", ctypes.c_int),
-        ("den", ctypes.c_int)]
-
 class AVStream(ctypes.Structure):
     _fields_ = [
         ("av_class", ctypes.c_void_p),