On Fri, 20 May 2022, Trystan Mata wrote:
From 2bdef1bdb93efa40b7d3fe21270f9f23465bee90 Mon Sep 17 00:00:00 2001
From: Trystan Mata <trystan.m...@tytanium.xyz>
Date: Fri, 20 May 2022 14:26:49 +0200
Subject: [PATCH] avcodec/mfenc: Dynamically load MFPlat.DLL
Allow builds of FFmpeg with MediaFoundation to work under N editions of
Windows which are without MediaFoundation by default.
Signed-off-by: Trystan Mata <trystan.m...@tytanium.xyz>
---
configure | 4 +-
libavcodec/mf_utils.c | 26 +++++++------
libavcodec/mf_utils.h | 16 ++++++--
libavcodec/mfenc.c | 91 ++++++++++++++++++++++++++++++++++++-------
4 files changed, 107 insertions(+), 30 deletions(-)
This patch on its own breaks builds for UWP targets (where LoadLibrary
isn't available). Or more precisely, previously mfenc was enabled, now it
no longer is available.
For such targets, one can unconditionally assume that the functions are
available and can link directly against them. See ff_MFTEnumEx in
mf_utils.c how that's done so far. Doing the same instead of LoadLibrary
probably shouldn't be an issue for you, but I think we'd need to drop the
dependency on LoadLibrary in configure. (I think that's fine, we don't
really lose anything by doing that.)
Btw, when sending updates to an earlier posted patch, it'd be nice if
you'd mention somewhere what changed compared to the previous revision of
the patch.
// Martin
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