From 292b9a8a70bc0df9af875e392cd8ed601ecf997e Mon Sep 17 00:00:00 2001
From: Jonathan Thomas <jonathan@openshot.org>
Date: Tue, 26 Jan 2021 17:51:54 -0600
Subject: [PATCH] Until I find a better method of detecting pix_fmt's that have
 an alpha channel, I'm going with a simple list. Not sure if this will work
 well with older versions of FFmpeg though, as these items change over time.
 Waiting to see how build servers handle it.

---
 src/FFmpegUtilities.h | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/src/FFmpegUtilities.h b/src/FFmpegUtilities.h
index c1a7ccd3..70b47406 100644
--- a/src/FFmpegUtilities.h
+++ b/src/FFmpegUtilities.h
@@ -129,7 +129,25 @@
 	// Does ffmpeg pixel format contain an alpha channel?
 	inline static const bool ffmpeg_has_alpha(PixelFormat pix_fmt)
 	{
-		if (pix_fmt == AV_PIX_FMT_ARGB || pix_fmt == AV_PIX_FMT_RGBA || pix_fmt == AV_PIX_FMT_ABGR || pix_fmt == AV_PIX_FMT_BGRA || pix_fmt == AV_PIX_FMT_YUVA420P) {
+		if (pix_fmt == AV_PIX_FMT_ARGB ||
+		    pix_fmt == AV_PIX_FMT_RGBA ||
+		    pix_fmt == AV_PIX_FMT_ABGR ||
+		    pix_fmt == AV_PIX_FMT_BGRA ||
+		    pix_fmt == AV_PIX_FMT_YUVA420P ||
+		    pix_fmt == AV_PIX_FMT_YA16LE ||
+		    pix_fmt == AV_PIX_FMT_YA16BE ||
+		    pix_fmt == AV_PIX_FMT_YA8 ||
+		    pix_fmt == AV_PIX_FMT_GBRAP ||
+            pix_fmt == AV_PIX_FMT_GBRAP10BE ||
+            pix_fmt == AV_PIX_FMT_GBRAP10LE ||
+            pix_fmt == AV_PIX_FMT_GBRAP12BE ||
+            pix_fmt == AV_PIX_FMT_GBRAP12LE ||
+            pix_fmt == AV_PIX_FMT_GBRAP16BE ||
+            pix_fmt == AV_PIX_FMT_GBRAP16LE ||
+            pix_fmt == AV_PIX_FMT_GBRPF32BE ||
+            pix_fmt == AV_PIX_FMT_GBRPF32LE ||
+            pix_fmt == AV_PIX_FMT_GBRAPF32BE ||
+            pix_fmt == AV_PIX_FMT_GBRAPF32LE) {
 			return true;
 		} else {
 			return false;