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Yaowu Xu authored
Adds a flag "buf_8bit_valid" to indicate if buf_8bit is synchronized with HBD buffer, the flag is then used to avoid possible redundant operation in down conversion the hbd buffer to buf_8bit. Also this commit also moves the operation to prepare source frame for coding outside of recode loop to avoid duplicate operations there. Change-Id: I67a1eb408b75bb734bd8a16fe6ffbd58c93a230f
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