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-rw-r--r--libavformat/avformat.h8
-rw-r--r--libavformat/utils.c2
2 files changed, 10 insertions, 0 deletions
diff --git a/libavformat/avformat.h b/libavformat/avformat.h
index 57603031a4..80d693a113 100644
--- a/libavformat/avformat.h
+++ b/libavformat/avformat.h
@@ -1257,6 +1257,14 @@ typedef struct AVFormatContext {
*/
#define RAW_PACKET_BUFFER_SIZE 2500000
int raw_packet_buffer_remaining_size;
+
+ /**
+ * IO repositioned flag.
+ * This is set by avformat when the underlaying IO context read pointer
+ * is repositioned, for example when doing byte based seeking.
+ * Demuxers can use the flag to detect such changes.
+ */
+ int io_repositioned;
} AVFormatContext;
/**
diff --git a/libavformat/utils.c b/libavformat/utils.c
index 001b0e3179..c5d6d322c3 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -2018,6 +2018,8 @@ static int seek_frame_byte(AVFormatContext *s, int stream_index, int64_t pos, in
avio_seek(s->pb, pos, SEEK_SET);
+ s->io_repositioned = 1;
+
return 0;
}