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authorFrédéric Dalleau <frederic.dalleau@linux.intel.com>2013-04-08 15:24:18 +0200
committerJohan Hedberg <johan.hedberg@intel.com>2013-04-15 11:10:06 +0300
commitc9e50c6ac4b478216cefdb89ff0b0909b18ab49f (patch)
tree2d8bc49c82c404fe377eaf835ba240bec1e64434
parent80adf9b6b14e11dcf558588fe68159406ff8dcbf (diff)
downloadsbc-c9e50c6ac4b478216cefdb89ff0b0909b18ab49f.tar.gz
TODO: Add TODO list
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+Background
+==========
+
+- Priority scale: High, Medium and Low
+
+- Complexity scale: C1, C2, C4 and C8. The complexity scale is exponential,
+ with complexity 1 being the lowest complexity. Complexity is a function
+ of both task 'complexity' and task 'scope'.
+
+ The general rule of thumb is that a complexity 1 task should take 1-2 weeks
+ for a person very familiar with oFono codebase. Higher complexity tasks
+ require more time and have higher uncertainty.
+
+ Higher complexity tasks should be refined into several lower complexity tasks
+ once the task is better understood.
+
+NEON instruction set
+====================
+
+- The neon optimization code is split in two parts. Sample reordering and blocks
+encoding. There is a neon optimization for encoding SBC. But mSBC is not
+supported by this optimizer because the reordering has been specifically for
+mSBC.
+
+ Priority: Low
+ Complexity: C2
+
+SSE instruction set
+===================
+
+- The decoder is optimized to take advantage of advanced processor instruction
+sets. Currently implemented are MMX, arm neon, arm v6 and iwmmxt. SSE3 is
+is available since almost 10 years now, on a large range of Intel processors.
+It should be interesting to implement it and to compare with MMX implementation
+on Intel processors.
+
+ Priority: Medium
+ Complexity: C4
+
+Decoder improvements
+====================
+
+- Currently, only the decoder is optimized to take advantage of advanced
+processor instruction sets. In use cases like HFP 1.6, optimizing the encoder
+will bring a significant latency, power and performance advantage. For exemple,
+the MMX encoder is 3 to 6 time faster than the SIMD encoder.
+
+ Priority: High
+ Complexity: C8