+enum CacheMissBehavior {
+ DECODE_IF_NOT_IN_CACHE,
+ RETURN_NULLPTR_IF_NOT_IN_CACHE
+};
+
+// This is, well, a hack. We hope for no collisions.
+inline JPEGID create_jpegid_for_interpolated_fade(unsigned stream_idx, int64_t pts, unsigned secondary_stream_idx, int64_t secondary_pts)
+{
+ JPEGID id;
+ id.stream_idx = (stream_idx << 8) | secondary_stream_idx;
+
+ uint64_t rot = secondary_stream_idx;
+ rot = (rot << 32) | (rot >> 32);
+ id.pts = pts ^ int64_t(rot);
+ id.interpolated = true;
+ return id;
+}