diff options
Diffstat (limited to 'libavcodec/aarch64/hevcdsp_sao_neon.S')
| -rw-r--r-- | libavcodec/aarch64/hevcdsp_sao_neon.S | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/libavcodec/aarch64/hevcdsp_sao_neon.S b/libavcodec/aarch64/hevcdsp_sao_neon.S index 73b0b3b056..d524323fe8 100644 --- a/libavcodec/aarch64/hevcdsp_sao_neon.S +++ b/libavcodec/aarch64/hevcdsp_sao_neon.S @@ -3,7 +3,7 @@ * * AArch64 NEON optimised SAO functions for HEVC decoding * - * Copyright (c) 2020 Josh Dekker <josh@itanimul.li> + * Copyright (c) 2020-2021 J. Dekker <jdek@itanimul.li> * * This file is part of FFmpeg. * @@ -35,6 +35,7 @@ function ff_hevc_sao_band_filter_8x8_8_neon, export=1 stp xzr, xzr, [sp, #32] stp xzr, xzr, [sp, #48] mov w8, #4 + sxtw x6, w6 0: ldrsh x9, [x4, x8, lsl #1] // sao_offset_val[k+1] subs w8, w8, #1 add w10, w8, w5 // k + sao_left_class @@ -43,7 +44,9 @@ function ff_hevc_sao_band_filter_8x8_8_neon, export=1 bne 0b ld1 {v16.16b-v19.16b}, [sp], #64 movi v20.8h, #1 -1: mov w8, w6 // beginning of line + sub x2, x2, x6 // stride_dst - width + sub x3, x3, x6 // stride_src - width +1: mov x8, x6 // beginning of line 2: // Simple layout for accessing 16bit values // with 8bit LUT. // @@ -52,7 +55,7 @@ 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 - ld1 {v2.8b}, [x1] // dst[x] = av_clip_pixel(src[x] + offset_table[src[x] >> shift]); + ld1 {v2.8b}, [x1], #8 // 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) @@ -61,7 +64,7 @@ function ff_hevc_sao_band_filter_8x8_8_neon, export=1 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 + st1 {v4.8b}, [x0], #8 // store subs w8, w8, #8 // done 8 pixels bne 2b subs w7, w7, #1 // finished line, prep. new |