5 Commits

Author	SHA1	Message	Date
Christophe GISQUET	3faa303a47	rv34: DC-only inverse transform ... When decoding coefficients, detect whether the block is DC-only, and take advantage of this knowledge to perform DC-only inverse transform. This is achieved by: - first, changing the 108x4 element modulo_three_table into a 108 element table (kind of base4), and accessing each value using mask and shifts. - then, checking low bits for 0 (as they represent the presence of higher frequency coefficients) Also provide x86 SIMD code for the DC-only inverse transform. Signed-off-by: Kostya Shishkov <kostya.shishkov@gmail.com>	2012-01-12 09:52:33 +01:00
Christophe GISQUET	98f24ecd6c	rv34: joint coefficient decoding and dequantization ... Perform dequantization while decoding coefficients instead of performing it on the entire coefficients buffer. Since quantized coefficients are very sparse, this usually causes a small speedup. Speedup of around 1% on Panda board compared to the removed here neon code. Global speedup is probably around 3%. Signed-off-by: Kostya Shishkov <kostya.shishkov@gmail.com>	2012-01-04 10:30:01 +01:00
Mans Rullgard	40901fc14e	rv34: move 4x4 dequant to RV34DSPContext ... Signed-off-by: Mans Rullgard <mans@mansr.com>	2011-12-13 12:05:34 +00:00
Janne Grunau	42d32cf53c	rv34: NEON optimised inverse transform functions ... Signed-off-by: Mans Rullgard <mans@mansr.com>	2011-12-06 13:48:24 +00:00
Janne Grunau	1bca8f4bc5	rv34: move inverse transform functions to DSP context	2011-10-12 15:52:22 +02:00