[FFmpeg-devel] [PATCH] dsp optimized float 2 int conversion for wma decoder

[Benjamin Larsson]

Old code:

3067536 dezicycles in float to int16, 127 runs, 1 skips
3086121 dezicycles in float to int16, 254 runs, 2 skips
3062931 dezicycles in float to int16, 509 runs, 3 skips
3022620 dezicycles in float to int16, 1019 runs, 5 skips
2997724 dezicycles in float to int16, 2041 runs, 7 skips



New code:
2651584 dezicycles in simd to int16, 127 runs, 1 skips
2668336 dezicycles in simd to int16, 254 runs, 2 skips
2672938 dezicycles in simd to int16, 509 runs, 3 skips
2677962 dezicycles in simd to int16, 1020 runs, 4 skips
2672280 dezicycles in simd to int16, 2041 runs, 7 skips


Benchmarked from wma_decode_frame start to end.

Didn't test/benchmark in float mode, will do that if patch is ok.

MvH
Benjamin Larsson
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