diff options
| author | J. Dekker <jdek@itanimul.li> | 2021-12-15 20:06:20 +0100 |
|---|---|---|
| committer | J. Dekker <jdek@itanimul.li> | 2022-01-04 14:31:56 +0100 |
| commit | 89a2ed4a8b72683d0a8dfcb8c16c7a97eb740d5b (patch) | |
| tree | d2bfb12967fa6ad446c56c6eb13436326e397b95 /libavcodec/aarch64 | |
| parent | c97ffc1a77ccaf901e642bd21ed26aaf75557745 (diff) | |
lavc/aarch64: clean-up sao band 8x8 function formatting
Signed-off-by: J. Dekker <jdek@itanimul.li>
Diffstat (limited to 'libavcodec/aarch64')
| -rw-r--r-- | libavcodec/aarch64/hevcdsp_sao_neon.S | 65 |
1 files changed, 25 insertions, 40 deletions
diff --git a/libavcodec/aarch64/hevcdsp_sao_neon.S b/libavcodec/aarch64/hevcdsp_sao_neon.S index 167b9676d8..73b0b3b056 100644 --- a/libavcodec/aarch64/hevcdsp_sao_neon.S +++ b/libavcodec/aarch64/hevcdsp_sao_neon.S @@ -30,24 +30,21 @@ // int width, int height) function ff_hevc_sao_band_filter_8x8_8_neon, export=1 sub sp, sp, #64 - stp xzr, xzr, [sp] - stp xzr, xzr, [sp, #16] - stp xzr, xzr, [sp, #32] - stp xzr, xzr, [sp, #48] + stp xzr, xzr, [sp] + stp xzr, xzr, [sp, #16] + stp xzr, xzr, [sp, #32] + stp xzr, xzr, [sp, #48] mov w8, #4 -0: - ldrsh x9, [x4, x8, lsl #1] // x9 = sao_offset_val[k+1] +0: ldrsh x9, [x4, x8, lsl #1] // sao_offset_val[k+1] subs w8, w8, #1 - add w10, w8, w5 // x10 = k + sao_left_class - and w10, w10, #0x1F + add w10, w8, w5 // k + sao_left_class + and w10, w10, #0x1F strh w9, [sp, x10, lsl #1] bne 0b - ld1 {v16.16b-v19.16b}, [sp], #64 - movi v20.8h, #1 -1: // beginning of line - mov w8, w6 -2: - // Simple layout for accessing 16bit values + ld1 {v16.16b-v19.16b}, [sp], #64 + movi v20.8h, #1 +1: mov w8, w6 // beginning of line +2: // Simple layout for accessing 16bit values // with 8bit LUT. // // 00 01 02 03 04 05 06 07 @@ -55,33 +52,21 @@ function ff_hevc_sao_band_filter_8x8_8_neon, export=1 // |xDE#xAD|xCA#xFE|xBE#xEF|xFE#xED|.... // +-----------------------------------> // i-0 i-1 i-2 i-3 - // dst[x] = av_clip_pixel(src[x] + offset_table[src[x] >> shift]); - ld1 {v2.8b}, [x1] - // load src[x] - uxtl v0.8h, v2.8b - // >> shift - ushr v2.8h, v0.8h, #3 // BIT_DEPTH - 3 - // x2 (access lower short) - shl v1.8h, v2.8h, #1 // low (x2, accessing short) - // +1 access upper short - add v3.8h, v1.8h, v20.8h - // shift insert index to upper byte - sli v1.8h, v3.8h, #8 - // table - tbx v2.16b, {v16.16b-v19.16b}, v1.16b - // src[x] + table - add v1.8h, v0.8h, v2.8h - // clip + narrow - sqxtun v4.8b, v1.8h - // store - st1 {v4.8b}, [x0] - // done 8 pixels - subs w8, w8, #8 + ld1 {v2.8b}, [x1] // dst[x] = av_clip_pixel(src[x] + offset_table[src[x] >> shift]); + uxtl v0.8h, v2.8b // load src[x] + ushr v2.8h, v0.8h, #3 // >> BIT_DEPTH - 3 + shl v1.8h, v2.8h, #1 // low (x2, accessing short) + add v3.8h, v1.8h, v20.8h // +1 access upper short + sli v1.8h, v3.8h, #8 // shift insert index to upper byte + tbx v2.16b, {v16.16b-v19.16b}, v1.16b // table + add v1.8h, v0.8h, v2.8h // src[x] + table + sqxtun v4.8b, v1.8h // clip + narrow + st1 {v4.8b}, [x0] // store + subs w8, w8, #8 // done 8 pixels bne 2b - // finished line - subs w7, w7, #1 - add x0, x0, x2 // dst += stride_dst - add x1, x1, x3 // src += stride_src + subs w7, w7, #1 // finished line, prep. new + add x0, x0, x2 // dst += stride_dst + add x1, x1, x3 // src += stride_src bne 1b ret endfunc |