X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;ds=inline;f=src%2Flib%2Fffmpeg_examiner.cc;h=0a236d836be46b4f5baacdee175201e154de6cab;hb=3e0e3b10667d8ba2882fb307de3696e66fc357df;hp=bd6a9b20d475b6b23a7781a735bf52f09b19281e;hpb=0bbcd3880588c5c82f4f19f9465fb2332ea6e0a8;p=dcpomatic.git

diff --git a/src/lib/ffmpeg_examiner.cc b/src/lib/ffmpeg_examiner.cc
index bd6a9b20d..0a236d836 100644
--- a/src/lib/ffmpeg_examiner.cc
+++ b/src/lib/ffmpeg_examiner.cc
@@ -33,8 +33,9 @@ extern "C" {
 #include <libavformat/avformat.h>
 #include <libavutil/pixfmt.h>
 #include <libavutil/pixdesc.h>
-#include <libavutil/eval.h>
+#include <libavutil/channel_layout.h>
 #include <libavutil/display.h>
+#include <libavutil/eval.h>
 }
 DCPOMATIC_ENABLE_WARNINGS
 #include <iostream>
@@ -479,3 +480,12 @@ FFmpegExaminer::range () const
 		return VideoRange::FULL;
 	}
 }
+
+
+PixelQuanta
+FFmpegExaminer::pixel_quanta () const
+{
+	auto const desc = av_pix_fmt_desc_get(video_codec_context()->pix_fmt);
+	return { 1 << desc->log2_chroma_w, 1 << desc->log2_chroma_h };
+}
+