diff options
Diffstat (limited to 'media/libvpx/libvpx/vp9/encoder/arm/neon/vp9_frame_scale_neon.c')
| -rw-r--r-- | media/libvpx/libvpx/vp9/encoder/arm/neon/vp9_frame_scale_neon.c | 844 |
1 files changed, 844 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vp9/encoder/arm/neon/vp9_frame_scale_neon.c b/media/libvpx/libvpx/vp9/encoder/arm/neon/vp9_frame_scale_neon.c new file mode 100644 index 0000000000..bc8dd4a341 --- /dev/null +++ b/media/libvpx/libvpx/vp9/encoder/arm/neon/vp9_frame_scale_neon.c @@ -0,0 +1,844 @@ +/* + * Copyright (c) 2017 The WebM project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#include <arm_neon.h> + +#include "./vp9_rtcd.h" +#include "./vpx_dsp_rtcd.h" +#include "./vpx_scale_rtcd.h" +#include "vp9/common/vp9_blockd.h" +#include "vpx_dsp/arm/mem_neon.h" +#include "vpx_dsp/arm/transpose_neon.h" +#include "vpx_dsp/arm/vpx_convolve8_neon.h" +#include "vpx_dsp/vpx_filter.h" +#include "vpx_scale/yv12config.h" + +// Note: The scaling functions could write extra rows and columns in dst, which +// exceed the right and bottom boundaries of the destination frame. We rely on +// the following frame extension function to fix these rows and columns. + +static INLINE void scale_plane_2_to_1_phase_0(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 uint8x16x2_t s = vld2q_u8(src); + vst1q_u8(dst, s.val[0]); + src += 32; + dst += 16; + x -= 16; + } while (x); + src += 2 * (src_stride - max_width); + dst += dst_stride - max_width; + } while (--y); +} + +static INLINE void scale_plane_4_to_1_phase_0(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_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( + 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 { + // 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_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); + dst += dst_stride - max_width; + } while (--y); +} + +static INLINE void scale_plane_4_to_1_bilinear( + 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_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_bilinear(const uint8x8_t *const s, + const uint8x8_t *const coef) { + const uint16x8_t h0 = vmull_u8(s[0], coef[0]); + const uint16x8_t h1 = vmlal_u8(h0, s[1], coef[1]); + + return vrshrn_n_u16(h1, 7); +} + +static void scale_plane_2_to_1_general(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 width_hor = (w + 3) & ~3; + const int width_ver = (w + 7) & ~7; + const int height_hor = (2 * h + SUBPEL_TAPS - 2 + 7) & ~7; + const int height_ver = (h + 3) & ~3; + const int16x8_t filters = vld1q_s16(coef); + int x, y = height_hor; + uint8_t *t = temp_buffer; + uint8x8_t s[14], d[4]; + + assert(w && h); + + src -= (SUBPEL_TAPS / 2 - 1) * src_stride + SUBPEL_TAPS / 2 + 1; + + // horizontal 4x8 + // 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], + &s[6], &s[7]); + transpose_u8_8x8(&s[0], &s[1], &s[2], &s[3], &s[4], &s[5], &s[6], &s[7]); + x = width_hor; + + do { + src += 8; + load_u8_8x8(src, src_stride, &s[6], &s[7], &s[8], &s[9], &s[10], &s[11], + &s[12], &s[13]); + transpose_u8_8x8(&s[6], &s[7], &s[8], &s[9], &s[10], &s[11], &s[12], + &s[13]); + + d[0] = scale_filter_8(&s[0], filters); // 00 10 20 30 40 50 60 70 + d[1] = scale_filter_8(&s[2], filters); // 01 11 21 31 41 51 61 71 + d[2] = scale_filter_8(&s[4], filters); // 02 12 22 32 42 52 62 72 + d[3] = scale_filter_8(&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 * width_hor), vreinterpret_u32_u8(d[0]), + 0); + vst1_lane_u32((uint32_t *)(t + 1 * width_hor), vreinterpret_u32_u8(d[1]), + 0); + vst1_lane_u32((uint32_t *)(t + 2 * width_hor), vreinterpret_u32_u8(d[2]), + 0); + vst1_lane_u32((uint32_t *)(t + 3 * width_hor), vreinterpret_u32_u8(d[3]), + 0); + vst1_lane_u32((uint32_t *)(t + 4 * width_hor), vreinterpret_u32_u8(d[0]), + 1); + vst1_lane_u32((uint32_t *)(t + 5 * width_hor), vreinterpret_u32_u8(d[1]), + 1); + vst1_lane_u32((uint32_t *)(t + 6 * width_hor), vreinterpret_u32_u8(d[2]), + 1); + vst1_lane_u32((uint32_t *)(t + 7 * width_hor), vreinterpret_u32_u8(d[3]), + 1); + + s[0] = s[8]; + s[1] = s[9]; + s[2] = s[10]; + s[3] = s[11]; + s[4] = s[12]; + s[5] = s[13]; + + t += 4; + x -= 4; + } while (x); + src += 8 * src_stride - 2 * width_hor; + t += 7 * width_hor; + y -= 8; + } while (y); + + // vertical 8x4 + x = width_ver; + t = temp_buffer; + do { + load_u8_8x8(t, width_hor, &s[0], &s[1], &s[2], &s[3], &s[4], &s[5], &s[6], + &s[7]); + t += 6 * width_hor; + y = height_ver; + + do { + load_u8_8x8(t, width_hor, &s[6], &s[7], &s[8], &s[9], &s[10], &s[11], + &s[12], &s[13]); + t += 8 * width_hor; + + d[0] = scale_filter_8(&s[0], filters); // 00 01 02 03 04 05 06 07 + d[1] = scale_filter_8(&s[2], filters); // 10 11 12 13 14 15 16 17 + d[2] = scale_filter_8(&s[4], filters); // 20 21 22 23 24 25 26 27 + d[3] = scale_filter_8(&s[6], filters); // 30 31 32 33 34 35 36 37 + vst1_u8(dst + 0 * dst_stride, d[0]); + vst1_u8(dst + 1 * dst_stride, d[1]); + vst1_u8(dst + 2 * dst_stride, d[2]); + vst1_u8(dst + 3 * dst_stride, d[3]); + + s[0] = s[8]; + s[1] = s[9]; + s[2] = s[10]; + s[3] = s[11]; + s[4] = s[12]; + s[5] = s[13]; + + dst += 4 * dst_stride; + y -= 4; + } while (y); + t -= width_hor * (2 * height_ver + 6); + t += 8; + dst -= height_ver * dst_stride; + dst += 8; + x -= 8; + } while (x); +} + +static void scale_plane_4_to_1_general(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 width_hor = (w + 1) & ~1; + const int width_ver = (w + 7) & ~7; + const int height_hor = (4 * h + SUBPEL_TAPS - 2 + 7) & ~7; + const int height_ver = (h + 1) & ~1; + const int16x8_t filters = vld1q_s16(coef); + int x, y = 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 2x8 + // 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 = 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_8(&s[0], filters); // 00 10 20 30 40 50 60 70 + d[1] = scale_filter_8(&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 * width_hor), + vreinterpret_u16_u8(dd.val[0]), 0); + vst1_lane_u16((uint16_t *)(t + 1 * width_hor), + vreinterpret_u16_u8(dd.val[1]), 0); + vst1_lane_u16((uint16_t *)(t + 2 * width_hor), + vreinterpret_u16_u8(dd.val[0]), 1); + vst1_lane_u16((uint16_t *)(t + 3 * width_hor), + vreinterpret_u16_u8(dd.val[1]), 1); + vst1_lane_u16((uint16_t *)(t + 4 * width_hor), + vreinterpret_u16_u8(dd.val[0]), 2); + vst1_lane_u16((uint16_t *)(t + 5 * width_hor), + vreinterpret_u16_u8(dd.val[1]), 2); + vst1_lane_u16((uint16_t *)(t + 6 * width_hor), + vreinterpret_u16_u8(dd.val[0]), 3); + vst1_lane_u16((uint16_t *)(t + 7 * 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 * width_hor; + t += 7 * width_hor; + y -= 8; + } while (y); + + // vertical 8x2 + x = width_ver; + t = temp_buffer; + do { + load_u8_8x4(t, width_hor, &s[0], &s[1], &s[2], &s[3]); + t += 4 * width_hor; + y = height_ver; + + do { + load_u8_8x8(t, width_hor, &s[4], &s[5], &s[6], &s[7], &s[8], &s[9], + &s[10], &s[11]); + t += 8 * width_hor; + + d[0] = scale_filter_8(&s[0], filters); // 00 01 02 03 04 05 06 07 + d[1] = scale_filter_8(&s[4], filters); // 10 11 12 13 14 15 16 17 + 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 -= width_hor * (4 * height_ver + 4); + t += 8; + dst -= height_ver * dst_stride; + dst += 8; + x -= 8; + } while (x); +} + +// Notes for 4 to 3 scaling: +// +// 1. 6 rows are calculated in each horizontal inner loop, so width_hor must be +// multiple of 6, and no less than w. +// +// 2. 8 rows are calculated in each vertical inner loop, so width_ver must be +// multiple of 8, and no less than w. +// +// 3. 8 columns are calculated in each horizontal inner loop for further +// vertical scaling, so height_hor must be multiple of 8, and no less than +// 4 * h / 3. +// +// 4. 6 columns are calculated in each vertical inner loop, so height_ver must +// be multiple of 6, and no less than h. +// +// 5. The physical location of the last row of the 4 to 3 scaled frame is +// decided by phase_scaler, and are always less than 1 pixel below the last row +// of the original image. + +static void scale_plane_4_to_3_bilinear(const uint8_t *src, + const int src_stride, uint8_t *dst, + const int dst_stride, const int w, + const int h, const int phase_scaler, + uint8_t *const temp_buffer) { + static const int step_q4 = 16 * 4 / 3; + const int width_hor = (w + 5) - ((w + 5) % 6); + const int stride_hor = width_hor + 2; // store 2 extra pixels + const int width_ver = (w + 7) & ~7; + // We only need 1 extra row below because there are only 2 bilinear + // coefficients. + const int height_hor = (4 * h / 3 + 1 + 7) & ~7; + const int height_ver = (h + 5) - ((h + 5) % 6); + int x, y = height_hor; + uint8_t *t = temp_buffer; + uint8x8_t s[9], d[8], c[6]; + + assert(w && h); + + c[0] = vdup_n_u8((uint8_t)vp9_filter_kernels[BILINEAR][phase_scaler][3]); + c[1] = vdup_n_u8((uint8_t)vp9_filter_kernels[BILINEAR][phase_scaler][4]); + c[2] = vdup_n_u8( + (uint8_t)vp9_filter_kernels[BILINEAR][(phase_scaler + 1 * step_q4) & + SUBPEL_MASK][3]); + c[3] = vdup_n_u8( + (uint8_t)vp9_filter_kernels[BILINEAR][(phase_scaler + 1 * step_q4) & + SUBPEL_MASK][4]); + c[4] = vdup_n_u8( + (uint8_t)vp9_filter_kernels[BILINEAR][(phase_scaler + 2 * step_q4) & + SUBPEL_MASK][3]); + c[5] = vdup_n_u8( + (uint8_t)vp9_filter_kernels[BILINEAR][(phase_scaler + 2 * step_q4) & + SUBPEL_MASK][4]); + + d[6] = vdup_n_u8(0); + d[7] = vdup_n_u8(0); + + // horizontal 6x8 + do { + load_u8_8x8(src, src_stride, &s[0], &s[1], &s[2], &s[3], &s[4], &s[5], + &s[6], &s[7]); + src += 1; + transpose_u8_8x8(&s[0], &s[1], &s[2], &s[3], &s[4], &s[5], &s[6], &s[7]); + x = width_hor; + + do { + load_u8_8x8(src, src_stride, &s[1], &s[2], &s[3], &s[4], &s[5], &s[6], + &s[7], &s[8]); + src += 8; + transpose_u8_8x8(&s[1], &s[2], &s[3], &s[4], &s[5], &s[6], &s[7], &s[8]); + + // 00 10 20 30 40 50 60 70 + // 01 11 21 31 41 51 61 71 + // 02 12 22 32 42 52 62 72 + // 03 13 23 33 43 53 63 73 + // 04 14 24 34 44 54 64 74 + // 05 15 25 35 45 55 65 75 + d[0] = scale_filter_bilinear(&s[0], &c[0]); + d[1] = + scale_filter_bilinear(&s[(phase_scaler + 1 * step_q4) >> 4], &c[2]); + d[2] = + scale_filter_bilinear(&s[(phase_scaler + 2 * step_q4) >> 4], &c[4]); + d[3] = scale_filter_bilinear(&s[4], &c[0]); + d[4] = scale_filter_bilinear(&s[4 + ((phase_scaler + 1 * step_q4) >> 4)], + &c[2]); + d[5] = scale_filter_bilinear(&s[4 + ((phase_scaler + 2 * step_q4) >> 4)], + &c[4]); + + // 00 01 02 03 04 05 xx xx + // 10 11 12 13 14 15 xx xx + // 20 21 22 23 24 25 xx xx + // 30 31 32 33 34 35 xx xx + // 40 41 42 43 44 45 xx xx + // 50 51 52 53 54 55 xx xx + // 60 61 62 63 64 65 xx xx + // 70 71 72 73 74 75 xx xx + transpose_u8_8x8(&d[0], &d[1], &d[2], &d[3], &d[4], &d[5], &d[6], &d[7]); + // store 2 extra pixels + vst1_u8(t + 0 * stride_hor, d[0]); + vst1_u8(t + 1 * stride_hor, d[1]); + vst1_u8(t + 2 * stride_hor, d[2]); + vst1_u8(t + 3 * stride_hor, d[3]); + vst1_u8(t + 4 * stride_hor, d[4]); + vst1_u8(t + 5 * stride_hor, d[5]); + vst1_u8(t + 6 * stride_hor, d[6]); + vst1_u8(t + 7 * stride_hor, d[7]); + + s[0] = s[8]; + + t += 6; + x -= 6; + } while (x); + src += 8 * src_stride - 4 * width_hor / 3 - 1; + t += 7 * stride_hor + 2; + y -= 8; + } while (y); + + // vertical 8x6 + x = width_ver; + t = temp_buffer; + do { + load_u8_8x8(t, stride_hor, &s[0], &s[1], &s[2], &s[3], &s[4], &s[5], &s[6], + &s[7]); + t += stride_hor; + y = height_ver; + + do { + load_u8_8x8(t, stride_hor, &s[1], &s[2], &s[3], &s[4], &s[5], &s[6], + &s[7], &s[8]); + t += 8 * stride_hor; + + d[0] = scale_filter_bilinear(&s[0], &c[0]); + d[1] = + scale_filter_bilinear(&s[(phase_scaler + 1 * step_q4) >> 4], &c[2]); + d[2] = + scale_filter_bilinear(&s[(phase_scaler + 2 * step_q4) >> 4], &c[4]); + d[3] = scale_filter_bilinear(&s[4], &c[0]); + d[4] = scale_filter_bilinear(&s[4 + ((phase_scaler + 1 * step_q4) >> 4)], + &c[2]); + d[5] = scale_filter_bilinear(&s[4 + ((phase_scaler + 2 * step_q4) >> 4)], + &c[4]); + vst1_u8(dst + 0 * dst_stride, d[0]); + vst1_u8(dst + 1 * dst_stride, d[1]); + vst1_u8(dst + 2 * dst_stride, d[2]); + vst1_u8(dst + 3 * dst_stride, d[3]); + vst1_u8(dst + 4 * dst_stride, d[4]); + vst1_u8(dst + 5 * dst_stride, d[5]); + + s[0] = s[8]; + + dst += 6 * dst_stride; + y -= 6; + } while (y); + t -= stride_hor * (4 * height_ver / 3 + 1); + t += 8; + dst -= height_ver * dst_stride; + dst += 8; + x -= 8; + } while (x); +} + +static void scale_plane_4_to_3_general(const uint8_t *src, const int src_stride, + uint8_t *dst, const int dst_stride, + const int w, const int h, + const InterpKernel *const coef, + const int phase_scaler, + uint8_t *const temp_buffer) { + static const int step_q4 = 16 * 4 / 3; + const int width_hor = (w + 5) - ((w + 5) % 6); + const int stride_hor = width_hor + 2; // store 2 extra pixels + const int width_ver = (w + 7) & ~7; + // We need (SUBPEL_TAPS - 1) extra rows: (SUBPEL_TAPS / 2 - 1) extra rows + // above and (SUBPEL_TAPS / 2) extra rows below. + const int height_hor = (4 * h / 3 + SUBPEL_TAPS - 1 + 7) & ~7; + const int height_ver = (h + 5) - ((h + 5) % 6); + const int16x8_t filters0 = + vld1q_s16(coef[(phase_scaler + 0 * step_q4) & SUBPEL_MASK]); + const int16x8_t filters1 = + vld1q_s16(coef[(phase_scaler + 1 * step_q4) & SUBPEL_MASK]); + const int16x8_t filters2 = + vld1q_s16(coef[(phase_scaler + 2 * step_q4) & SUBPEL_MASK]); + int x, y = height_hor; + uint8_t *t = temp_buffer; + uint8x8_t s[15], d[8]; + + assert(w && h); + + src -= (SUBPEL_TAPS / 2 - 1) * src_stride + SUBPEL_TAPS / 2; + d[6] = vdup_n_u8(0); + d[7] = vdup_n_u8(0); + + // horizontal 6x8 + do { + load_u8_8x8(src + 1, src_stride, &s[0], &s[1], &s[2], &s[3], &s[4], &s[5], + &s[6], &s[7]); + transpose_u8_8x8(&s[0], &s[1], &s[2], &s[3], &s[4], &s[5], &s[6], &s[7]); + x = width_hor; + + do { + src += 8; + load_u8_8x8(src, src_stride, &s[7], &s[8], &s[9], &s[10], &s[11], &s[12], + &s[13], &s[14]); + transpose_u8_8x8(&s[7], &s[8], &s[9], &s[10], &s[11], &s[12], &s[13], + &s[14]); + + // 00 10 20 30 40 50 60 70 + // 01 11 21 31 41 51 61 71 + // 02 12 22 32 42 52 62 72 + // 03 13 23 33 43 53 63 73 + // 04 14 24 34 44 54 64 74 + // 05 15 25 35 45 55 65 75 + d[0] = scale_filter_8(&s[0], filters0); + d[1] = scale_filter_8(&s[(phase_scaler + 1 * step_q4) >> 4], filters1); + d[2] = scale_filter_8(&s[(phase_scaler + 2 * step_q4) >> 4], filters2); + d[3] = scale_filter_8(&s[4], filters0); + d[4] = + scale_filter_8(&s[4 + ((phase_scaler + 1 * step_q4) >> 4)], filters1); + d[5] = + scale_filter_8(&s[4 + ((phase_scaler + 2 * step_q4) >> 4)], filters2); + + // 00 01 02 03 04 05 xx xx + // 10 11 12 13 14 15 xx xx + // 20 21 22 23 24 25 xx xx + // 30 31 32 33 34 35 xx xx + // 40 41 42 43 44 45 xx xx + // 50 51 52 53 54 55 xx xx + // 60 61 62 63 64 65 xx xx + // 70 71 72 73 74 75 xx xx + transpose_u8_8x8(&d[0], &d[1], &d[2], &d[3], &d[4], &d[5], &d[6], &d[7]); + // store 2 extra pixels + vst1_u8(t + 0 * stride_hor, d[0]); + vst1_u8(t + 1 * stride_hor, d[1]); + vst1_u8(t + 2 * stride_hor, d[2]); + vst1_u8(t + 3 * stride_hor, d[3]); + vst1_u8(t + 4 * stride_hor, d[4]); + vst1_u8(t + 5 * stride_hor, d[5]); + vst1_u8(t + 6 * stride_hor, d[6]); + vst1_u8(t + 7 * stride_hor, d[7]); + + s[0] = s[8]; + s[1] = s[9]; + s[2] = s[10]; + s[3] = s[11]; + s[4] = s[12]; + s[5] = s[13]; + s[6] = s[14]; + + t += 6; + x -= 6; + } while (x); + src += 8 * src_stride - 4 * width_hor / 3; + t += 7 * stride_hor + 2; + y -= 8; + } while (y); + + // vertical 8x6 + x = width_ver; + t = temp_buffer; + do { + load_u8_8x8(t, stride_hor, &s[0], &s[1], &s[2], &s[3], &s[4], &s[5], &s[6], + &s[7]); + t += 7 * stride_hor; + y = height_ver; + + do { + load_u8_8x8(t, stride_hor, &s[7], &s[8], &s[9], &s[10], &s[11], &s[12], + &s[13], &s[14]); + t += 8 * stride_hor; + + d[0] = scale_filter_8(&s[0], filters0); + d[1] = scale_filter_8(&s[(phase_scaler + 1 * step_q4) >> 4], filters1); + d[2] = scale_filter_8(&s[(phase_scaler + 2 * step_q4) >> 4], filters2); + d[3] = scale_filter_8(&s[4], filters0); + d[4] = + scale_filter_8(&s[4 + ((phase_scaler + 1 * step_q4) >> 4)], filters1); + d[5] = + scale_filter_8(&s[4 + ((phase_scaler + 2 * step_q4) >> 4)], filters2); + vst1_u8(dst + 0 * dst_stride, d[0]); + vst1_u8(dst + 1 * dst_stride, d[1]); + vst1_u8(dst + 2 * dst_stride, d[2]); + vst1_u8(dst + 3 * dst_stride, d[3]); + vst1_u8(dst + 4 * dst_stride, d[4]); + vst1_u8(dst + 5 * dst_stride, d[5]); + + s[0] = s[8]; + s[1] = s[9]; + s[2] = s[10]; + s[3] = s[11]; + s[4] = s[12]; + s[5] = s[13]; + s[6] = s[14]; + + dst += 6 * dst_stride; + y -= 6; + } while (y); + t -= stride_hor * (4 * height_ver / 3 + 7); + t += 8; + dst -= 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, + int phase_scaler) { + const int src_w = src->y_crop_width; + const int src_h = src->y_crop_height; + const int dst_w = dst->y_crop_width; + const int dst_h = dst->y_crop_height; + const int dst_uv_w = dst->uv_crop_width; + const int dst_uv_h = dst->uv_crop_height; + int scaled = 0; + + // phase_scaler is usually 0 or 8. + assert(phase_scaler >= 0 && phase_scaler < 16); + + if (2 * dst_w == src_w && 2 * dst_h == src_h) { + // 2 to 1 + scaled = 1; + if (phase_scaler == 0) { + scale_plane_2_to_1_phase_0(src->y_buffer, src->y_stride, dst->y_buffer, + dst->y_stride, dst_w, dst_h); + scale_plane_2_to_1_phase_0(src->u_buffer, src->uv_stride, dst->u_buffer, + dst->uv_stride, dst_uv_w, dst_uv_h); + scale_plane_2_to_1_phase_0(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_2_to_1_bilinear(src->y_buffer, src->y_stride, dst->y_buffer, + dst->y_stride, dst_w, dst_h, c0, c1); + scale_plane_2_to_1_bilinear(src->u_buffer, src->uv_stride, dst->u_buffer, + dst->uv_stride, dst_uv_w, dst_uv_h, c0, c1); + scale_plane_2_to_1_bilinear(src->v_buffer, src->uv_stride, dst->v_buffer, + dst->uv_stride, dst_uv_w, dst_uv_h, c0, c1); + } else { + const int buffer_stride = (dst_w + 3) & ~3; + const int buffer_height = (2 * dst_h + SUBPEL_TAPS - 2 + 7) & ~7; + uint8_t *const temp_buffer = + (uint8_t *)malloc(buffer_stride * buffer_height); + if (temp_buffer) { + scale_plane_2_to_1_general( + 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_2_to_1_general( + 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_2_to_1_general( + 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; + } + } + } else if (4 * dst_w == src_w && 4 * dst_h == src_h) { + // 4 to 1 + scaled = 1; + if (phase_scaler == 0) { + scale_plane_4_to_1_phase_0(src->y_buffer, src->y_stride, dst->y_buffer, + dst->y_stride, dst_w, dst_h); + scale_plane_4_to_1_phase_0(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(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(src->y_buffer, src->y_stride, dst->y_buffer, + dst->y_stride, dst_w, dst_h, c0, c1); + scale_plane_4_to_1_bilinear(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(src->v_buffer, src->uv_stride, dst->v_buffer, + dst->uv_stride, dst_uv_w, dst_uv_h, c0, c1); + } else { + const int buffer_stride = (dst_w + 1) & ~1; + const int buffer_height = (4 * dst_h + SUBPEL_TAPS - 2 + 7) & ~7; + uint8_t *const temp_buffer = + (uint8_t *)malloc(buffer_stride * buffer_height); + if (temp_buffer) { + scale_plane_4_to_1_general( + 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( + 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( + 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; + } + } + } else if (4 * dst_w == 3 * src_w && 4 * dst_h == 3 * src_h) { + // 4 to 3 + const int buffer_stride = (dst_w + 5) - ((dst_w + 5) % 6) + 2; + const int buffer_height = (4 * dst_h / 3 + SUBPEL_TAPS - 1 + 7) & ~7; + uint8_t *const temp_buffer = + (uint8_t *)malloc(buffer_stride * buffer_height); + if (temp_buffer) { + scaled = 1; + if (filter_type == BILINEAR) { + scale_plane_4_to_3_bilinear(src->y_buffer, src->y_stride, dst->y_buffer, + dst->y_stride, dst_w, dst_h, phase_scaler, + temp_buffer); + scale_plane_4_to_3_bilinear(src->u_buffer, src->uv_stride, + dst->u_buffer, dst->uv_stride, dst_uv_w, + dst_uv_h, phase_scaler, temp_buffer); + scale_plane_4_to_3_bilinear(src->v_buffer, src->uv_stride, + dst->v_buffer, dst->uv_stride, dst_uv_w, + dst_uv_h, phase_scaler, temp_buffer); + } else { + scale_plane_4_to_3_general( + 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_3_general(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_3_general(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); + } + } + + if (scaled) { + vpx_extend_frame_borders(dst); + } else { + // Call c version for all other scaling ratios. + vp9_scale_and_extend_frame_c(src, dst, filter_type, phase_scaler); + } +} |