4 commits

Author	SHA1	Message	Date
Ronald S. Bultje	3ab9a2a557	rv34: change most "int stride" into "ptrdiff_t stride". ... This prevents having to sign-extend on 64-bit systems with 32-bit ints, such as x86-64. Also fixes crashes on systems where we don't do it and arguments are not in registers, such as Win64 for all weight functions.	2012-02-20 14:58:25 -08:00
Christophe GISQUET	9ba9c34024	rv34: 1-pass inter MB reconstruction ... Implement 1-pass inverse transform and reconstruction for inter blocks.	2012-01-16 19:26:41 +01:00
Christophe GISQUET	d78062386e	rv34: Intra 16x16 handling ... Extract processing of intra 16x16 blocks from intra macroblock processing. Also implement a function performing inverse transform and block reconstruction for DC-only blocks in 1 pass instead of 2.	2012-01-16 00:41:51 +01:00
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