From a9bbe53dbb8ce599100ceb7ce864d8d81dfcb858 Mon Sep 17 00:00:00 2001 From: Linfeng Zhang Date: Thu, 7 Sep 2017 12:50:36 -0700 Subject: Add 4 to 1 scaling NEON optimization BUG=webm:1419 Change-Id: If82a93935d2453e61b7647aae70983db1740bec7 --- vp9/encoder/arm/neon/vp9_frame_scale_neon.c | 288 +++++++++++++++++++++++++--- 1 file changed, 263 insertions(+), 25 deletions(-) (limited to 'vp9/encoder/arm') diff --git a/vp9/encoder/arm/neon/vp9_frame_scale_neon.c b/vp9/encoder/arm/neon/vp9_frame_scale_neon.c index 448957cc5..bbed00f58 100644 --- a/vp9/encoder/arm/neon/vp9_frame_scale_neon.c +++ b/vp9/encoder/arm/neon/vp9_frame_scale_neon.c @@ -45,11 +45,61 @@ static INLINE void scale_plane_2_to_1_phase_0_neon(const uint8_t *src, } while (--y); } +static INLINE void scale_plane_4_to_1_phase_0_neon(const uint8_t *src, + const int src_stride, + uint8_t *dst, + const int dst_stride, + const int w, const int h) { + const int max_width = (w + 15) & ~15; + int y = h; + + assert(w && h); + + do { + int x = max_width; + do { + const uint8x16x4_t s = vld4q_u8(src); + vst1q_u8(dst, s.val[0]); + src += 64; + dst += 16; + x -= 16; + } while (x); + src += 4 * (src_stride - max_width); + dst += dst_stride - max_width; + } while (--y); +} + +static INLINE void scale_plane_bilinear_phase_non_0_kernel( + const uint8x16_t in0, const uint8x16_t in1, const uint8x16_t in2, + const uint8x16_t in3, const uint8x8_t coef0, const uint8x8_t coef1, + uint8_t *const dst) { + const uint16x8_t h0 = vmull_u8(vget_low_u8(in0), coef0); + const uint16x8_t h1 = vmull_u8(vget_high_u8(in0), coef0); + const uint16x8_t h2 = vmull_u8(vget_low_u8(in2), coef0); + const uint16x8_t h3 = vmull_u8(vget_high_u8(in2), coef0); + const uint16x8_t h4 = vmlal_u8(h0, vget_low_u8(in1), coef1); + const uint16x8_t h5 = vmlal_u8(h1, vget_high_u8(in1), coef1); + const uint16x8_t h6 = vmlal_u8(h2, vget_low_u8(in3), coef1); + const uint16x8_t h7 = vmlal_u8(h3, vget_high_u8(in3), coef1); + + const uint8x8_t hor0 = vrshrn_n_u16(h4, 7); // temp: 00 01 02 03 04 05 06 07 + const uint8x8_t hor1 = vrshrn_n_u16(h5, 7); // temp: 08 09 0A 0B 0C 0D 0E 0F + const uint8x8_t hor2 = vrshrn_n_u16(h6, 7); // temp: 10 11 12 13 14 15 16 17 + const uint8x8_t hor3 = vrshrn_n_u16(h7, 7); // temp: 18 19 1A 1B 1C 1D 1E 1F + const uint16x8_t v0 = vmull_u8(hor0, coef0); + const uint16x8_t v1 = vmull_u8(hor1, coef0); + const uint16x8_t v2 = vmlal_u8(v0, hor2, coef1); + const uint16x8_t v3 = vmlal_u8(v1, hor3, coef1); + // dst: 0 1 2 3 4 5 6 7 8 9 A B C D E F + const uint8x16_t d = vcombine_u8(vrshrn_n_u16(v2, 7), vrshrn_n_u16(v3, 7)); + vst1q_u8(dst, d); +} + static INLINE void scale_plane_2_to_1_bilinear_phase_non_0_neon( const uint8_t *const src, const int src_stride, uint8_t *dst, const int dst_stride, const int w, const int h, const int16_t c0, const int16_t c1) { - const int max_width = (w + 7) & ~7; + const int max_width = (w + 15) & ~15; const uint8_t *src0 = src; const uint8_t *src1 = src + src_stride; const uint8x8_t coef0 = vdup_n_u8(c0); @@ -61,25 +111,18 @@ static INLINE void scale_plane_2_to_1_bilinear_phase_non_0_neon( do { int x = max_width; do { - // 00 02 04 06 08 0A 0C 0E 01 03 05 07 09 0B 0D 0F - const uint8x8x2_t s0 = vld2_u8(src0); - // 10 12 14 16 18 1A 1C 1E 11 13 15 17 19 1B 1D 1F - const uint8x8x2_t s1 = vld2_u8(src1); - const uint16x8_t h0 = vmull_u8(s0.val[0], coef0); - const uint16x8_t h1 = vmull_u8(s1.val[0], coef0); - const uint16x8_t h2 = vmlal_u8(h0, s0.val[1], coef1); - const uint16x8_t h3 = vmlal_u8(h1, s1.val[1], coef1); - - const uint8x8_t hor0 = vrshrn_n_u16(h2, 7); // 00 01 02 03 04 05 06 07 - const uint8x8_t hor1 = vrshrn_n_u16(h3, 7); // 10 11 12 13 14 15 16 17 - const uint16x8_t v0 = vmull_u8(hor0, coef0); - const uint16x8_t v1 = vmlal_u8(v0, hor1, coef1); - const uint8x8_t d = vrshrn_n_u16(v1, 7); // 00 01 02 03 04 05 06 07 - vst1_u8(dst, d); - src0 += 16; - src1 += 16; - dst += 8; - x -= 8; + // 000 002 004 006 008 00A 00C 00E 010 012 014 016 018 01A 01C 01E + // 001 003 005 007 009 00B 00D 00F 011 013 015 017 019 01B 01D 01F + const uint8x16x2_t s0 = vld2q_u8(src0); + // 100 102 104 106 108 10A 10C 10E 110 112 114 116 118 11A 11C 11E + // 101 103 105 107 109 10B 10D 10F 111 113 115 117 119 11B 11D 11F + const uint8x16x2_t s1 = vld2q_u8(src1); + scale_plane_bilinear_phase_non_0_kernel(s0.val[0], s0.val[1], s1.val[0], + s1.val[1], coef0, coef1, dst); + src0 += 32; + src1 += 32; + dst += 16; + x -= 16; } while (x); src0 += 2 * (src_stride - max_width); src1 += 2 * (src_stride - max_width); @@ -87,6 +130,46 @@ static INLINE void scale_plane_2_to_1_bilinear_phase_non_0_neon( } while (--y); } +static INLINE void scale_plane_4_to_1_bilinear_phase_non_0_neon( + const uint8_t *const src, const int src_stride, uint8_t *dst, + const int dst_stride, const int w, const int h, const int16_t c0, + const int16_t c1) { + const int max_width = (w + 15) & ~15; + const uint8_t *src0 = src; + const uint8_t *src1 = src + src_stride; + const uint8x8_t coef0 = vdup_n_u8(c0); + const uint8x8_t coef1 = vdup_n_u8(c1); + int y = h; + + assert(w && h); + + do { + int x = max_width; + do { + // (*) -- useless + // 000 004 008 00C 010 014 018 01C 020 024 028 02C 030 034 038 03C + // 001 005 009 00D 011 015 019 01D 021 025 029 02D 031 035 039 03D + // 002 006 00A 00E 012 016 01A 01E 022 026 02A 02E 032 036 03A 03E (*) + // 003 007 00B 00F 013 017 01B 01F 023 027 02B 02F 033 037 03B 03F (*) + const uint8x16x4_t s0 = vld4q_u8(src0); + // 100 104 108 10C 110 114 118 11C 120 124 128 12C 130 134 138 13C + // 101 105 109 10D 111 115 119 11D 121 125 129 12D 131 135 139 13D + // 102 106 10A 10E 112 116 11A 11E 122 126 12A 12E 132 136 13A 13E (*) + // 103 107 10B 10F 113 117 11B 11F 123 127 12B 12F 133 137 13B 13F (*) + const uint8x16x4_t s1 = vld4q_u8(src1); + scale_plane_bilinear_phase_non_0_kernel(s0.val[0], s0.val[1], s1.val[0], + s1.val[1], coef0, coef1, dst); + src0 += 64; + src1 += 64; + dst += 16; + x -= 16; + } while (x); + src0 += 4 * (src_stride - max_width); + src1 += 4 * (src_stride - max_width); + dst += dst_stride - max_width; + } while (--y); +} + static INLINE uint8x8_t scale_filter(const uint8x8_t *const s, const int16x8_t filters) { const int16x8_t filter3 = vdupq_lane_s16(vget_low_s16(filters), 3); @@ -126,7 +209,7 @@ static void scale_plane_2_to_1_general_neon(const uint8_t *src, src -= (SUBPEL_TAPS / 2 - 1) * src_stride + SUBPEL_TAPS / 2 + 1; // horizontal - // Note: processing 8x8 is about 20% faster than processing row by row using + // Note: processing 4x8 is about 20% faster than processing row by row using // vld4_u8(). do { load_u8_8x8(src + 2, src_stride, &s[0], &s[1], &s[2], &s[3], &s[4], &s[5], @@ -141,10 +224,14 @@ static void scale_plane_2_to_1_general_neon(const uint8_t *src, transpose_u8_8x8(&s[6], &s[7], &s[8], &s[9], &s[10], &s[11], &s[12], &s[13]); - d[0] = scale_filter(&s[0], filters); - d[1] = scale_filter(&s[2], filters); - d[2] = scale_filter(&s[4], filters); - d[3] = scale_filter(&s[6], filters); + d[0] = scale_filter(&s[0], filters); // 00 10 20 30 40 50 60 70 + d[1] = scale_filter(&s[2], filters); // 01 11 21 31 41 51 61 71 + d[2] = scale_filter(&s[4], filters); // 02 12 22 32 42 52 62 72 + d[3] = scale_filter(&s[6], filters); // 03 13 23 33 43 53 63 73 + // 00 01 02 03 40 41 42 43 + // 10 11 12 13 50 51 52 53 + // 20 21 22 23 60 61 62 63 + // 30 31 32 33 70 71 72 73 transpose_u8_8x4(&d[0], &d[1], &d[2], &d[3]); vst1_lane_u32((uint32_t *)(t + 0 * max_width_hor), vreinterpret_u32_u8(d[0]), 0); @@ -219,6 +306,111 @@ static void scale_plane_2_to_1_general_neon(const uint8_t *src, } while (x); } +static void scale_plane_4_to_1_general_neon(const uint8_t *src, + const int src_stride, uint8_t *dst, + const int dst_stride, const int w, + const int h, + const int16_t *const coef, + uint8_t *const temp_buffer) { + const int max_width_hor = (w + 1) & ~1; + const int max_width_ver = (w + 7) & ~7; + const int max_height_hor = (4 * h + SUBPEL_TAPS - 2 + 7) & ~7; + const int max_height_ver = (h + 1) & ~1; + const int16x8_t filters = vld1q_s16(coef); + int x, y = max_height_hor; + uint8_t *t = temp_buffer; + uint8x8_t s[12], d[2]; + + assert(w && h); + + src -= (SUBPEL_TAPS / 2 - 1) * src_stride + SUBPEL_TAPS / 2 + 3; + + // horizontal + // Note: processing 2x8 is about 20% faster than processing row by row using + // vld4_u8(). + do { + load_u8_8x8(src + 4, src_stride, &s[0], &s[1], &s[2], &s[3], &s[4], &s[5], + &s[6], &s[7]); + transpose_u8_4x8(&s[0], &s[1], &s[2], &s[3], s[4], s[5], s[6], s[7]); + x = max_width_hor; + + do { + uint8x8x2_t dd; + src += 8; + load_u8_8x8(src, src_stride, &s[4], &s[5], &s[6], &s[7], &s[8], &s[9], + &s[10], &s[11]); + transpose_u8_8x8(&s[4], &s[5], &s[6], &s[7], &s[8], &s[9], &s[10], + &s[11]); + + d[0] = scale_filter(&s[0], filters); // 00 10 20 30 40 50 60 70 + d[1] = scale_filter(&s[4], filters); // 01 11 21 31 41 51 61 71 + // dd.val[0]: 00 01 20 21 40 41 60 61 + // dd.val[1]: 10 11 30 31 50 51 70 71 + dd = vtrn_u8(d[0], d[1]); + vst1_lane_u16((uint16_t *)(t + 0 * max_width_hor), + vreinterpret_u16_u8(dd.val[0]), 0); + vst1_lane_u16((uint16_t *)(t + 1 * max_width_hor), + vreinterpret_u16_u8(dd.val[1]), 0); + vst1_lane_u16((uint16_t *)(t + 2 * max_width_hor), + vreinterpret_u16_u8(dd.val[0]), 1); + vst1_lane_u16((uint16_t *)(t + 3 * max_width_hor), + vreinterpret_u16_u8(dd.val[1]), 1); + vst1_lane_u16((uint16_t *)(t + 4 * max_width_hor), + vreinterpret_u16_u8(dd.val[0]), 2); + vst1_lane_u16((uint16_t *)(t + 5 * max_width_hor), + vreinterpret_u16_u8(dd.val[1]), 2); + vst1_lane_u16((uint16_t *)(t + 6 * max_width_hor), + vreinterpret_u16_u8(dd.val[0]), 3); + vst1_lane_u16((uint16_t *)(t + 7 * max_width_hor), + vreinterpret_u16_u8(dd.val[1]), 3); + + s[0] = s[8]; + s[1] = s[9]; + s[2] = s[10]; + s[3] = s[11]; + + t += 2; + x -= 2; + } while (x); + src += 8 * src_stride - 4 * max_width_hor; + t += 7 * max_width_hor; + y -= 8; + } while (y); + + // vertical + x = max_width_ver; + t = temp_buffer; + do { + load_u8_8x4(t, max_width_hor, &s[0], &s[1], &s[2], &s[3]); + t += 4 * max_width_hor; + y = max_height_ver; + + do { + load_u8_8x8(t, max_width_hor, &s[4], &s[5], &s[6], &s[7], &s[8], &s[9], + &s[10], &s[11]); + t += 8 * max_width_hor; + + d[0] = scale_filter(&s[0], filters); + d[1] = scale_filter(&s[4], filters); + vst1_u8(dst + 0 * dst_stride, d[0]); + vst1_u8(dst + 1 * dst_stride, d[1]); + + s[0] = s[8]; + s[1] = s[9]; + s[2] = s[10]; + s[3] = s[11]; + + dst += 2 * dst_stride; + y -= 2; + } while (y); + t -= max_width_hor * (4 * max_height_ver + 4); + t += 8; + dst -= max_height_ver * dst_stride; + dst += 8; + x -= 8; + } while (x); +} + void vp9_scale_and_extend_frame_neon(const YV12_BUFFER_CONFIG *src, YV12_BUFFER_CONFIG *dst, INTERP_FILTER filter_type, @@ -277,6 +469,52 @@ void vp9_scale_and_extend_frame_neon(const YV12_BUFFER_CONFIG *src, scaled = 0; } } + } else if (4 * dst_w == src_w && 4 * dst_h == src_h) { + scaled = 1; + if (phase_scaler == 0) { + scale_plane_4_to_1_phase_0_neon(src->y_buffer, src->y_stride, + dst->y_buffer, dst->y_stride, dst_w, + dst_h); + scale_plane_4_to_1_phase_0_neon(src->u_buffer, src->uv_stride, + dst->u_buffer, dst->uv_stride, dst_uv_w, + dst_uv_h); + scale_plane_4_to_1_phase_0_neon(src->v_buffer, src->uv_stride, + dst->v_buffer, dst->uv_stride, dst_uv_w, + dst_uv_h); + } else if (filter_type == BILINEAR) { + const int16_t c0 = vp9_filter_kernels[BILINEAR][phase_scaler][3]; + const int16_t c1 = vp9_filter_kernels[BILINEAR][phase_scaler][4]; + scale_plane_4_to_1_bilinear_phase_non_0_neon(src->y_buffer, src->y_stride, + dst->y_buffer, dst->y_stride, + dst_w, dst_h, c0, c1); + scale_plane_4_to_1_bilinear_phase_non_0_neon( + src->u_buffer, src->uv_stride, dst->u_buffer, dst->uv_stride, + dst_uv_w, dst_uv_h, c0, c1); + scale_plane_4_to_1_bilinear_phase_non_0_neon( + src->v_buffer, src->uv_stride, dst->v_buffer, dst->uv_stride, + dst_uv_w, dst_uv_h, c0, c1); + } else { + const int buffer_max_width = (dst_w + 1) & ~1; + const int buffer_max_height = (4 * dst_h + SUBPEL_TAPS - 2 + 7) & ~7; + uint8_t *const temp_buffer = + (uint8_t *)malloc(buffer_max_width * buffer_max_height); + if (temp_buffer) { + scale_plane_4_to_1_general_neon( + src->y_buffer, src->y_stride, dst->y_buffer, dst->y_stride, dst_w, + dst_h, vp9_filter_kernels[filter_type][phase_scaler], temp_buffer); + scale_plane_4_to_1_general_neon( + src->u_buffer, src->uv_stride, dst->u_buffer, dst->uv_stride, + dst_uv_w, dst_uv_h, vp9_filter_kernels[filter_type][phase_scaler], + temp_buffer); + scale_plane_4_to_1_general_neon( + src->v_buffer, src->uv_stride, dst->v_buffer, dst->uv_stride, + dst_uv_w, dst_uv_h, vp9_filter_kernels[filter_type][phase_scaler], + temp_buffer); + free(temp_buffer); + } else { + scaled = 0; + } + } } if (scaled) { -- cgit v1.2.3