From d32aacab65a322b66d6a1b48f6cdb03e42bde0f9 Mon Sep 17 00:00:00 2001
From: Frank Liberato <liberato@chromium.org>
Date: Wed, 7 Jul 2021 19:01:22 -0700
Subject: [PATCH] Add av_stream_get_first_dts for Chromium

---
 libavformat/avformat.h | 4 ++++
 libavformat/utils.c    | 7 +++++++
 2 files changed, 11 insertions(+)

diff --git a/libavformat/avformat.h b/libavformat/avformat.h
index 1916aa2dc5..e6682849fa 100644
--- a/libavformat/avformat.h
+++ b/libavformat/avformat.h
@@ -1170,6 +1170,10 @@ typedef struct AVStreamGroup {

 struct AVCodecParserContext *av_stream_get_parser(const AVStream *s);

+// Chromium: We use the internal field first_dts vvv
+int64_t    av_stream_get_first_dts(const AVStream *st);
+// Chromium: We use the internal field first_dts ^^^
+
 #define AV_PROGRAM_RUNNING 1

 /**
diff --git a/libavformat/utils.c b/libavformat/utils.c
index cf4d68bff9..7d750abf88 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -56,6 +56,13 @@ int ff_unlock_avformat(void)
     return ff_mutex_unlock(&avformat_mutex) ? -1 : 0;
 }

+// Chromium: We use the internal field first_dts vvv
+int64_t av_stream_get_first_dts(const AVStream *st)
+{
+    return cffstream(st)->first_dts;
+}
+// Chromium: We use the internal field first_dts ^^^
+
 /* an arbitrarily chosen "sane" max packet size -- 50M */
 #define SANE_CHUNK_SIZE (50000000)

-- 
2.41.0