3 Commits

Author	SHA1	Message	Date
Ben Avison	6eee650289	avcodec/vc1: Arm 64-bit NEON unescape fast path ... checkasm benchmarks on 1.5 GHz Cortex-A72 are as follows. vc1dsp.vc1_unescape_buffer_c: 655617.7 vc1dsp.vc1_unescape_buffer_neon: 118237.0 Signed-off-by: Ben Avison <bavison@riscosopen.org> Signed-off-by: Martin Storsjö <martin@martin.st>	2022-04-01 10:03:34 +03:00
Ben Avison	501fdc017d	avcodec/vc1: Arm 64-bit NEON inverse transform fast paths ... checkasm benchmarks on 1.5 GHz Cortex-A72 are as follows. vc1dsp.vc1_inv_trans_4x4_c: 158.2 vc1dsp.vc1_inv_trans_4x4_neon: 65.7 vc1dsp.vc1_inv_trans_4x4_dc_c: 86.5 vc1dsp.vc1_inv_trans_4x4_dc_neon: 26.5 vc1dsp.vc1_inv_trans_4x8_c: 335.2 vc1dsp.vc1_inv_trans_4x8_neon: 106.2 vc1dsp.vc1_inv_trans_4x8_dc_c: 151.2 vc1dsp.vc1_inv_trans_4x8_dc_neon: 25.5 vc1dsp.vc1_inv_trans_8x4_c: 365.7 vc1dsp.vc1_inv_trans_8x4_neon: 97.2 vc1dsp.vc1_inv_trans_8x4_dc_c: 139.7 vc1dsp.vc1_inv_trans_8x4_dc_neon: 16.5 vc1dsp.vc1_inv_trans_8x8_c: 547.7 vc1dsp.vc1_inv_trans_8x8_neon: 137.0 vc1dsp.vc1_inv_trans_8x8_dc_c: 268.2 vc1dsp.vc1_inv_trans_8x8_dc_neon: 30.5 Signed-off-by: Ben Avison <bavison@riscosopen.org> Signed-off-by: Martin Storsjö <martin@martin.st>	2022-04-01 10:03:34 +03:00
Ben Avison	c62bbd4d20	avcodec/vc1: Arm 64-bit NEON deblocking filter fast paths ... checkasm benchmarks on 1.5 GHz Cortex-A72 are as follows. Note that the C version can still outperform the NEON version in specific cases. The balance between different code paths is stream-dependent, but in practice the best case happens about 5% of the time, the worst case happens about 40% of the time, and the complexity of the remaining cases fall somewhere in between. Therefore, taking the average of the best and worst case timings is probably a conservative estimate of the degree by which the NEON code improves performance. vc1dsp.vc1_h_loop_filter4_bestcase_c: 10.7 vc1dsp.vc1_h_loop_filter4_bestcase_neon: 43.5 vc1dsp.vc1_h_loop_filter4_worstcase_c: 184.5 vc1dsp.vc1_h_loop_filter4_worstcase_neon: 73.7 vc1dsp.vc1_h_loop_filter8_bestcase_c: 31.2 vc1dsp.vc1_h_loop_filter8_bestcase_neon: 62.2 vc1dsp.vc1_h_loop_filter8_worstcase_c: 358.2 vc1dsp.vc1_h_loop_filter8_worstcase_neon: 88.2 vc1dsp.vc1_h_loop_filter16_bestcase_c: 51.0 vc1dsp.vc1_h_loop_filter16_bestcase_neon: 107.7 vc1dsp.vc1_h_loop_filter16_worstcase_c: 722.7 vc1dsp.vc1_h_loop_filter16_worstcase_neon: 140.5 vc1dsp.vc1_v_loop_filter4_bestcase_c: 9.7 vc1dsp.vc1_v_loop_filter4_bestcase_neon: 43.0 vc1dsp.vc1_v_loop_filter4_worstcase_c: 178.7 vc1dsp.vc1_v_loop_filter4_worstcase_neon: 69.0 vc1dsp.vc1_v_loop_filter8_bestcase_c: 30.2 vc1dsp.vc1_v_loop_filter8_bestcase_neon: 50.7 vc1dsp.vc1_v_loop_filter8_worstcase_c: 353.0 vc1dsp.vc1_v_loop_filter8_worstcase_neon: 69.2 vc1dsp.vc1_v_loop_filter16_bestcase_c: 60.0 vc1dsp.vc1_v_loop_filter16_bestcase_neon: 90.0 vc1dsp.vc1_v_loop_filter16_worstcase_c: 714.2 vc1dsp.vc1_v_loop_filter16_worstcase_neon: 97.2 Signed-off-by: Ben Avison <bavison@riscosopen.org> Signed-off-by: Martin Storsjö <martin@martin.st>	2022-04-01 10:03:33 +03:00