From ea8d436f30cc22e2172e013e42ed089fa3d372cc Mon Sep 17 00:00:00 2001 From: John Koleszar Date: Tue, 2 Aug 2011 14:41:32 -0400 Subject: [PATCH] Update CHANGELOG for Cayuga release Change-Id: If6f20553159105c05f9a684cb7c8f3778c7894a1 --- CHANGELOG | 82 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 82 insertions(+) diff --git a/CHANGELOG b/CHANGELOG index e8760d19f..866b1ab4d 100644 --- a/CHANGELOG +++ b/CHANGELOG @@ -1,3 +1,85 @@ +2011-08-02 v0.9.7 "Cayuga" + Our third named release, focused on a faster, higher quality, encoder. + + - Upgrading: + This release is backwards compatible with Aylesbury (v0.9.5) and + Bali (v0.9.6). Users of older releases should refer to the Upgrading + notes in this document for that release. + + - Enhancements: + Stereo 3D format support for vpxenc + Runtime detection of available processor cores. + Allow specifying --end-usage by enum name + vpxdec: test for frame corruption + vpxenc: add quantizer histogram display + vpxenc: add rate histogram display + Set VPX_FRAME_IS_DROPPABLE + update configure for ios sdk 4.3 + Avoid text relocations in ARM vp8 decoder + Generate a vpx.pc file for pkg-config. + New ways of passing encoded data between encoder and decoder. + + - Speed: + This release includes across-the-board speed improvements to the + encoder. On x86, these measure at approximately 11.5% in Best mode, + 21.5% in Good mode (speed 0), and 22.5% in Realtime mode (speed 6). + On ARM Cortex A9 with Neon extensions, real-time encoding of video + telephony content is 35% faster than Bali on single core and 48% + faster on multi-core. On the NVidia Tegra2 platform, real time + encoding is 40% faster than Bali. + + Decoder speed was not a priority for this release, but improved + approximately 8.4% on x86. + + Reduce motion vector search on alt-ref frame. + Encoder loopfilter running in its own thread + Reworked loopfilter to precalculate more parameters + SSE2/SSSE3 optimizations for build_predictors_mbuv{,_s}(). + Make hor UV predict ~2x faster (73 vs 132 cycles) using SSSE3. + Removed redundant checks + Reduced structure sizes + utilize preload in ARMv6 MC/LPF/Copy routines + ARM optimized quantization, dfct, variance, subtract + Increase chrow row alignment to 16 bytes. + disable trellis optimization for first pass + Write SSSE3 sub-pixel filter function + Improve SSE2 half-pixel filter funtions + Add vp8_sub_pixel_variance16x8_ssse3 function + Reduce unnecessary distortion computation + Use diamond search to replace full search + Preload reference area in sub-pixel motion search (real-time mode) + + - Quality: + This release focused primarily on one-pass use cases, including + video conferencing. Low latency data rate control was significantly + improved, improving streamability over bandwidth constrained links. + Added support for error concealment, allowing frames to maintain + visual quality in the presence of substantial packet loss. + + Add rc_max_intra_bitrate_pct control + Limit size of initial keyframe in one-pass. + Improve framerate adaptation + Improved 1-pass CBR rate control + Improved KF insertion after fades to still. + Improved key frame detection. + Improved activity masking (lower PSNR impact for same SSIM boost) + Improved interaction between GF and ARFs + Adding error-concealment to the decoder. + Adding support for independent partitions + Adjusted rate-distortion constants + + + - Bug Fixes: + Removed firstpass motion map + Fix parallel make install + Fix multithreaded encoding for 1 MB wide frame + Fixed iwalsh_neon build problems with RVDS4.1 + Fix semaphore emulation, spin-wait intrinsics on Windows + Fix build with xcode4 and simplify GLOBAL. + Mark ARM asm objects as allowing a non-executable stack. + Fix vpxenc encoding incorrect webm file header on big endian + + 2011-03-07 v0.9.6 "Bali" Our second named release, focused on a faster, higher quality, encoder.