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-rw-r--r--libavcodec/internal.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/libavcodec/internal.h b/libavcodec/internal.h
index 13deb87120..068b34bbaa 100644
--- a/libavcodec/internal.h
+++ b/libavcodec/internal.h
@@ -99,4 +99,11 @@ void ff_init_buffer_info(AVCodecContext *s, AVFrame *pic);
int avpriv_lock_avformat(void);
int avpriv_unlock_avformat(void);
+/**
+ * Maximum size in bytes of extradata.
+ * This value was chosen such that every bit of the buffer is
+ * addressable by a 32-bit signed integer as used by get_bits.
+ */
+#define FF_MAX_EXTRADATA_SIZE ((1 << 28) - FF_INPUT_BUFFER_PADDING_SIZE)
+
#endif /* AVCODEC_INTERNAL_H */