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89c21b5ab7
Add NEON-optimized implementation for HEVC intra Planar prediction at
8-bit depth, supporting all block sizes (4x4 to 32x32).
Planar prediction implements bilinear interpolation using an incremental
base update: base_{y+1}[x] = base_y[x] - (top[x] - left[N]), reducing
per-row computation from 4 multiply-adds to 1 subtract + 1 multiply.
Uses rshrn for rounded narrowing shifts, eliminating manual rounding
bias. All left[y] values are broadcast in the NEON domain, avoiding
GP-to-NEON transfers.
4x4 interleaves row computations across 4 rows to break dependencies.
16x16 uses v19-v22 for persistent base/decrement vectors, avoiding
callee-saved register spills. 32x32 processes 8 rows per loop iteration
(4 iterations total) to reduce code size while maintaining full NEON
utilization.
Speedup over C on Apple M4 (checkasm --bench):
4x4: 2.25x 8x8: 6.40x 16x16: 9.72x 32x32: 3.21x
Signed-off-by: Jun Zhao <barryjzhao@tencent.com>
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| .. | ||
| h26x | ||
| vvc | ||
| aacencdsp_init.c | ||
| aacencdsp_neon.S | ||
| aacpsdsp_init_aarch64.c | ||
| aacpsdsp_neon.S | ||
| ac3dsp_init_aarch64.c | ||
| ac3dsp_neon.S | ||
| cabac.h | ||
| fdct.h | ||
| fdctdsp_init_aarch64.c | ||
| fdctdsp_neon.S | ||
| fmtconvert_init.c | ||
| fmtconvert_neon.S | ||
| h264chroma_init_aarch64.c | ||
| h264cmc_neon.S | ||
| h264dsp_init_aarch64.c | ||
| h264dsp_neon.S | ||
| h264idct_neon.S | ||
| h264pred_init.c | ||
| h264pred_neon.S | ||
| h264qpel_init_aarch64.c | ||
| h264qpel_neon.S | ||
| hevcdsp_deblock_neon.S | ||
| hevcdsp_dequant_neon.S | ||
| hevcdsp_idct_neon.S | ||
| hevcdsp_init_aarch64.c | ||
| hevcpred_init_aarch64.c | ||
| hevcpred_neon.S | ||
| hpeldsp_init_aarch64.c | ||
| hpeldsp_neon.S | ||
| huffyuvdsp_init_aarch64.c | ||
| huffyuvdsp_neon.S | ||
| idct.h | ||
| idctdsp_init_aarch64.c | ||
| idctdsp_neon.S | ||
| Makefile | ||
| me_cmp_init_aarch64.c | ||
| me_cmp_neon.S | ||
| mpegaudiodsp_init.c | ||
| mpegaudiodsp_neon.S | ||
| mpegvideoencdsp_init.c | ||
| mpegvideoencdsp_neon.S | ||
| neon.S | ||
| neontest.c | ||
| opusdsp_init.c | ||
| opusdsp_neon.S | ||
| pixblockdsp_init_aarch64.c | ||
| pixblockdsp_neon.S | ||
| pngdsp_init.c | ||
| pngdsp_neon.S | ||
| rv40dsp_init_aarch64.c | ||
| sbrdsp_init_aarch64.c | ||
| sbrdsp_neon.S | ||
| simple_idct_neon.S | ||
| synth_filter_init.c | ||
| synth_filter_neon.S | ||
| vc1dsp_init_aarch64.c | ||
| vc1dsp_neon.S | ||
| videodsp.S | ||
| videodsp_init.c | ||
| vorbisdsp_init.c | ||
| vorbisdsp_neon.S | ||
| vp8dsp.h | ||
| vp8dsp_init_aarch64.c | ||
| vp8dsp_neon.S | ||
| vp9dsp_init.h | ||
| vp9dsp_init_10bpp_aarch64.c | ||
| vp9dsp_init_12bpp_aarch64.c | ||
| vp9dsp_init_16bpp_aarch64_template.c | ||
| vp9dsp_init_aarch64.c | ||
| vp9itxfm_16bpp_neon.S | ||
| vp9itxfm_neon.S | ||
| vp9lpf_16bpp_neon.S | ||
| vp9lpf_neon.S | ||
| vp9mc_16bpp_neon.S | ||
| vp9mc_aarch64.S | ||
| vp9mc_neon.S | ||