Implement task 2. - Githubissues

atlanswer / DSP-HW

Practice with TI C64x/C64x+ series DSP. 梁凡老师 DSP 器件原理与应用课程作业。

Apache License 2.0

15 stars 6 forks source link

Closed atlanswer closed 3 years ago

atlanswer commented 3 years ago

Resolves #5.

atlanswer commented 3 years ago

Switch implemented.

atlanswer commented 3 years ago

The resize algorithm is using multiplication with inv_scale now.
The process of (idx + 0.5) * inv_scale - 0.5 was implemented, but the result is rounded, which is not necessary in the algorithm.

atlanswer commented 3 years ago

The output image finally looks reasonable now.

atlanswer commented 3 years ago

The linear assembly implementation was completed without optimization. And the fixed-point multiplication in C implementation was resolved. 512 x 1.5 cycle count comparison:	C float approach	C int approach	Linear assembly
1654442635	1027521855	60202045