Commits
Jingning Han committed c7846ebc343
Use 8x8 DCT transform for I8X8 prediction mode Apply 2D-DCT transform of dimension 8x8 to encode prediction residuals of I8X8 mode. Brought back block type 3 probability context model for 8x8 tokens, which is used for the coefficients of Y blocks in I8x8 modes. The coefficient costs estimate of I8X8 mode in rate-distortion is also changed appropriately. Performance results: derf: 0.246 yt: 0.114 std-hd: 0.730 hd: 0.670 Change-Id: If1d970eeb4e1827c9f0d2c5b27d33089b347ea27