[ 背景 ]
FFmpeg7.xを " --enable-amf " 付きでコンパイルする場合、amf-headers がインストールされている
必要があるが、2025年1月19日現在のFFmpeg最新Gitをコンパイルすると、avcodec/amfenc の 
B-Frame support 関連でエラーになり、コンパイルに失敗する。

これを回避するには amf-headers-1.4.35 に対策パッチをあてて更新する必要がある。
以下は、その amf-headers-1.4.35 対策パッケージの詳細。


Here is a patch to amf-headers-1.4.35

[code]  001_AV1_B-frame-support.patch
diff -Nru a/amf/public/include/components/VideoEncoderAV1.h b/amf/public/include/components/VideoEncoderAV1.h
--- a/amf/public/include/components/VideoEncoderAV1.h    2024-12-30 22:01:35.454080599 +0900
+++ b/amf/public/include/components/VideoEncoderAV1.h    2024-12-30 21:52:36.161034517 +0900
@@ -356,6 +356,7 @@
 #define AMF_VIDEO_ENCODER_AV1_CAP_MAX_NUM_TEMPORAL_LAYERS           L"Av1CapMaxNumTemporalLayers"       // amf_int64; default = N/A; The cap of maximum number of temporal layers
 #define AMF_VIDEO_ENCODER_AV1_CAP_MAX_NUM_LTR_FRAMES                L"Av1CapMaxNumLTRFrames"            // amf_int64; default = N/A; The cap of maximum number of LTR frames. This value is calculated based on current value of AMF_VIDEO_ENCODER_AV1_MAX_NUM_TEMPORAL_LAYERS.
 #define AMF_VIDEO_ENCODER_AV1_CAP_SUPPORT_TILE_OUTPUT               L"AV1SupportTileOutput"             // amf_bool; if tile output is supported
+#define AMF_VIDEO_ENCODER_AV1_CAP_BFRAMES                           L"AV1BFrames"                       // amf_bool; if b frames are supported for AV1
 
 #define AMF_VIDEO_ENCODER_AV1_CAP_SUPPORT_SMART_ACCESS_VIDEO        L"Av1EncoderSupportSmartAccessVideo"    // amf_bool; returns true if system supports SmartAccess Video
 #define AMF_VIDEO_ENCODER_AV1_CAP_WIDTH_ALIGNMENT_FACTOR            L"Av1WidthAlignmentFactor"          // amf_int64; default = 1; The encoder capability for width alignment
@@ -363,4 +364,9 @@
 
 #define AMF_VIDEO_ENCODER_AV1_MULTI_HW_INSTANCE_ENCODE              L"Av1MultiHwInstanceEncode"             // amf_bool; flag to enable AV1 multi VCN encode.
 
+// properties for Picture Management (VCN5 feature)
+#define AMF_VIDEO_ENCODER_AV1_MAX_CONSECUTIVE_BPICTURES             L"Av1MaxConsecutiveBPictures"        // amf_int64; default 0 or 127, determined by AMF_VIDEO_ENCODER_AV1_CAP_BFRAMES. Maximum number of consecutive B frames for B frame encoding
+#define AMF_VIDEO_ENCODER_AV1_B_PIC_PATTERN                         L"Av1BPicturesPattern"               // amf_int64; default 0. Number of B frames for B frame encoding
+#define AMF_VIDEO_ENCODER_AV1_ADAPTIVE_MINIGOP                      L"Av1AdaptiveMiniGop"                // amf_bool; default false. Adaptive miniGOP size for B frame encoding
+
 #endif //#ifndef AMF_VideoEncoderAV1_h


[code]  amf-headers.info (source file)
PRGNAM="amf-headers"
VERSION="1.4.35"
HOMEPAGE="https://github.com/GPUOpen-LibrariesAndSDKs/AMF"
DOWNLOAD="https://github.com/GPUOpen-LibrariesAndSDKs/AMF/archive/v1.4.35/AMF-1.4.35.tar.gz"
MD5SUM="c00b426ef66b6015470f6496664e609e"
DOWNLOAD_x86_64="direct download link(s) of application source tarball(s), x86_64 only"
MD5SUM_x86_64="MD5SUM_x86_64@"
REQUIRES="%README%"
MAINTAINER="JW(Shinichi Abe)"
EMAIL="Fake_shin1-dot-abe_AT_nifty-dot-com


[code]  amf-headers.SlackBuild
#!/bin/bash

# Slackware build script for AMF

# Copyright 2024 JW(Shinichi Abe) <shin1.abe@nifty.com>
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED
#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
#  EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
#  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
#  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
#  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

cd $(dirname $0) ; CWD=$(pwd)

PRGNAM=amf-headers
SRCNAM=AMF
VERSION=${VERSION:-1.4.35}
BUILD=${BUILD:-2}
TAG=${TAG:-jw}
PKGTYPE=${PKGTYPE:-txz}

if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i586 ;;
    arm*) ARCH=arm ;;
    *) ARCH=$( uname -m ) ;;
  esac
fi

if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
  echo "$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"
  exit 0
fi

TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

if [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
tar xvf $CWD/$SRCNAM-$VERSION.tar.gz
cd $SRCNAM-$VERSION
# Add Interface for AV1 B-frame Support
patch -p1 < $CWD/001_AV1_B-frame-support.patch --verbose || exit 1

chown -R root:root .
find -L . \
 \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
  -o -perm 511 \) -exec chmod 755 {} \; -o \
 \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
  -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;

CFLAGS="$SLKCFLAGS" \
CXXFLAGS="$SLKCFLAGS" \

install -dm 755 $PKG/usr/include
cp -dr --no-preserve=ownership amf/public/include $PKG/usr/include/AMF
install -Dm 644 LICENSE.txt -t $PKG/usr/share/licenses/amf-headers/

find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | grep ELF \
  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true

find $PKG -name perllocal.pod \
  -o -name ".packlist" \
  -o -name "*.bs" \
  | xargs rm -f

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a \
  *.txt $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

# Copy the slack-desc (and a custom doinst.sh if necessary) into ./install
mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc

cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE

[code]  slack-desc
# HOW TO EDIT THIS FILE:
# The "handy ruler" below makes it easier to edit a package description.
# Line up the first '|' above the ':' following the base package name, and
# the '|' on the right side marks the last column you can put a character in.
# You must make exactly 11 lines for the formatting to be correct.  It's also
# customary to leave one space after the ':' except on otherwise blank lines.

           |-----handy-ruler------------------------------------------------------|
amf-headers: amf-headers (Header files for Advanced Media Framework (AMF) SDK)
amf-headers:
amf-headers: AMF is a light-weight, portable multimedia framework that abstracts
amf-headers: away most of the platform and API-specific details and allows for
amf-headers: easy implementation of multimedia applications using a variety of
amf-headers: technologies, such as DirectX 11,OpenGL, and OpenCL and facilitates
amf-headers: an efficient interop between them.
amf-headers:
amf-headers: HOME: https://github.com/GPUOpen-LibrariesAndSDKs/AMF
amf-headers:
amf-headers: