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authorCarl Hetherington <cth@carlh.net>2023-12-10 16:20:20 +0100
committerCarl Hetherington <cth@carlh.net>2023-12-12 15:03:23 +0100
commit9e142b4410f9b1c703f3f12ced07c45dc2a0db24 (patch)
treefb4d29912c058768119e83eab5f92917478864db /src/lib/ffmpeg_examiner.cc
parent37b29fdf9028e6848470a19d189697fc58278990 (diff)
Add FFmpegExaminer::has_alpha().
Diffstat (limited to 'src/lib/ffmpeg_examiner.cc')
-rw-r--r--src/lib/ffmpeg_examiner.cc13
1 files changed, 13 insertions, 0 deletions
diff --git a/src/lib/ffmpeg_examiner.cc b/src/lib/ffmpeg_examiner.cc
index 46f4f236e..ed6f21094 100644
--- a/src/lib/ffmpeg_examiner.cc
+++ b/src/lib/ffmpeg_examiner.cc
@@ -384,6 +384,19 @@ FFmpegExaminer::bits_per_pixel () const
bool
+FFmpegExaminer::has_alpha() const
+{
+ if (video_codec_context()->pix_fmt == -1) {
+ return false;
+ }
+
+ auto const d = av_pix_fmt_desc_get(video_codec_context()->pix_fmt);
+ DCPOMATIC_ASSERT(d);
+ return d->flags & AV_PIX_FMT_FLAG_ALPHA;
+}
+
+
+bool
FFmpegExaminer::yuv () const
{
switch (video_codec_context()->pix_fmt) {