Differences

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--- atrac3p:serialized_quantization_unit_tree_choice_info [2010/07/23 17:44] – quantizer -> quantization precision megadiscman
+++ atrac3p:serialized_quantization_unit_tree_choice_info [2010/10/16 22:33] – fix mode 2: First ID is not delta-encoded megadiscman
@@ Line 18: / Line 18: @@
 === Mode 2: Delta encoding ===
-For quantization units needing a joint-stereo flag this mode works like mode 0 and mode 1 do, too, it just fetches a bit. For restricted or complete tree IDs, a code from the [[quantization unit tree id trees#restricted tree id|restricted tree ID tree]] or [[quantization unit tree id trees#delta prev tree id|delta-to-prev tree ID tree]] respectively. These codes are interpreted relative to the previous full or restricted tree ID, wrapping around after 3 or 7 respectively.
+For quantization units needing a joint-stereo flag this mode works like mode 0 and mode 1 do, too, it just fetches a bit. Otherwise, the Tree ID for the first quantization unit is loaded as in mode 1 (if needed). All further tree IDs are encoded relatively to the last tree ID (starting at 0 if the first quantization unit has no tree ID) using a code from the [[quantization unit tree id trees#restricted tree id|restricted tree ID tree]] or [[quantization unit tree id trees#delta prev tree id|delta-to-prev tree ID tree]]. The application of the differences wraps around after 3 or 7 respectively.
 === Mode 3 on master channel: Just zero ===