Chiebot-Mirror/FFmpeg - FFmpeg - Gitea: Git with a cup of tea

Author	SHA1	Message	Date
Hubert Mazur	d7abb7d143	lavc/aarch64: Add neon implementation for sse4 Provide neon implementation for sse4 function. Performance comparison tests are shown below. - sse_2_c: 80.7 - sse_2_neon: 31.0 Benchmarks and tests are run with checkasm tool on AWS Graviton 3. Signed-off-by: Hubert Mazur <hum@semihalf.com> Signed-off-by: Martin Storsjö <martin@martin.st>	2 years ago
Hubert Mazur	ad251fd262	lavc/aarch64: Add neon implementation for sse16 Provide neon implementation for sse16 function. Performance comparison tests are shown below. - sse_0_c: 268.2 - sse_0_neon: 43.5 Benchmarks and tests run with checkasm tool on AWS Graviton 3. Signed-off-by: Hubert Mazur <hum@semihalf.com> Signed-off-by: Martin Storsjö <martin@martin.st>	2 years ago
Martin Storsjö	4136405c86	aarch64: me_cmp: Don't do uaddlv once per iteration The max height is currently documented as 16; the max difference per pixel is 255, and a .8h element can easily contain 16*255, thus keep accumulating in two .8h vectors, and just do the final accumulationat the end. This should work for heights up to 256. This requires a minor register renumbering in ff_pix_abs16_xy2_neon. Before: Cortex A53 A72 A73 Graviton 3 pix_abs_0_0_neon: 97.7 47.0 37.5 22.7 pix_abs_0_1_neon: 154.0 59.0 52.0 25.0 pix_abs_0_3_neon: 179.7 96.7 87.5 41.2 After: pix_abs_0_0_neon: 96.0 39.2 31.2 22.0 pix_abs_0_1_neon: 150.7 59.7 46.2 23.7 pix_abs_0_3_neon: 175.7 83.7 81.7 38.2 Signed-off-by: Martin Storsjö <martin@martin.st>	2 years ago
Martin Storsjö	68a03f6424	aarch64: me_cmp: Switch from uabd to uabal in ff_pix_abs16_xy2_neon Using absolute-difference-accumulate does use twice the amount of absolute-difference instructions, but avoids the need for the uaddl and add instructions, reducing the total number of instructions by 3. These can be interleaved in the rest of the calculation, to avoid tight dependencies at the end. Unfortunately, this is marginally slower on Cortex A53, but faster on A72 and A73. Before: Cortex A53 A72 A73 Graviton 3 pix_abs_0_3_neon: 175.7 109.2 92.0 41.2 After: pix_abs_0_3_neon: 179.7 96.7 87.5 41.2 Signed-off-by: Martin Storsjö <martin@martin.st>	2 years ago
Martin Storsjö	b46de9aba4	aarch64: me_cmp: Interleave some of the loads in ff_pix_abs16_xy2_neon Before: Cortex A53 A72 A73 Graviton 3 pix_abs_0_3_neon: 183.7 112.7 97.5 41.2 After: pix_abs_0_3_neon: 175.7 109.2 92.0 41.2 Signed-off-by: Martin Storsjö <martin@martin.st>	2 years ago
Martin Storsjö	02e7853fd9	libavcodec: aarch64: Don't clobber v8 in the h%4 case in ff_pix_abs16_xy2_neon Checkasm doesn't currently test this codepath. Signed-off-by: Martin Storsjö <martin@martin.st>	2 years ago
Hubert Mazur	01e190dc99	lavc/aarch64: Add pix_abs16_x2 neon implementation Provide neon implementation for pix_abs16_x2 function. Performance tests of implementation are below. - pix_abs_0_1_c: 283.5 - pix_abs_0_1_neon: 39.0 Benchmarks and tests run with checkasm tool on AWS Graviton 3. Signed-off-by: Hubert Mazur <hum@semihalf.com> Signed-off-by: Martin Storsjö <martin@martin.st>	2 years ago
Swinney, Jonathan	c471cc7474	lavc/aarch64: motion estimation functions in neon - ff_pix_abs16_neon - ff_pix_abs16_xy2_neon In direct micro benchmarks of these ff functions verses their C implementations, these functions performed as follows on AWS Graviton 3. ff_pix_abs16_neon: pix_abs_0_0_c: 141.1 pix_abs_0_0_neon: 19.6 ff_pix_abs16_xy2_neon: pix_abs_0_3_c: 269.1 pix_abs_0_3_neon: 39.3 Tested with: ./tests/checkasm/checkasm --test=motion --bench --disable-linux-perf Signed-off-by: Jonathan Swinney <jswinney@amazon.com> Signed-off-by: Martin Storsjö <martin@martin.st>	2 years ago