diff options
Diffstat (limited to 'media/libvpx/libvpx/vpx_dsp/arm/subpel_variance_neon.c')
-rw-r--r-- | media/libvpx/libvpx/vpx_dsp/arm/subpel_variance_neon.c | 489 |
1 files changed, 489 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vpx_dsp/arm/subpel_variance_neon.c b/media/libvpx/libvpx/vpx_dsp/arm/subpel_variance_neon.c new file mode 100644 index 0000000000..d92f1615d7 --- /dev/null +++ b/media/libvpx/libvpx/vpx_dsp/arm/subpel_variance_neon.c @@ -0,0 +1,489 @@ +/* + * Copyright (c) 2014 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 "./vpx_dsp_rtcd.h" +#include "./vpx_config.h" + +#include "vpx/vpx_integer.h" + +#include "vpx_dsp/variance.h" +#include "vpx_dsp/arm/mem_neon.h" + +// Process a block exactly 4 wide and a multiple of 2 high. +static void var_filter_block2d_bil_w4(const uint8_t *src_ptr, uint8_t *dst_ptr, + int src_stride, int pixel_step, + int dst_height, int filter_offset) { + const uint8x8_t f0 = vdup_n_u8(8 - filter_offset); + const uint8x8_t f1 = vdup_n_u8(filter_offset); + + int i = dst_height; + do { + uint8x8_t s0 = load_unaligned_u8(src_ptr, src_stride); + uint8x8_t s1 = load_unaligned_u8(src_ptr + pixel_step, src_stride); + uint16x8_t blend = vmlal_u8(vmull_u8(s0, f0), s1, f1); + uint8x8_t blend_u8 = vrshrn_n_u16(blend, 3); + vst1_u8(dst_ptr, blend_u8); + + src_ptr += 2 * src_stride; + dst_ptr += 2 * 4; + i -= 2; + } while (i != 0); +} + +// Process a block exactly 8 wide and any height. +static void var_filter_block2d_bil_w8(const uint8_t *src_ptr, uint8_t *dst_ptr, + int src_stride, int pixel_step, + int dst_height, int filter_offset) { + const uint8x8_t f0 = vdup_n_u8(8 - filter_offset); + const uint8x8_t f1 = vdup_n_u8(filter_offset); + + int i = dst_height; + do { + uint8x8_t s0 = vld1_u8(src_ptr); + uint8x8_t s1 = vld1_u8(src_ptr + pixel_step); + uint16x8_t blend = vmlal_u8(vmull_u8(s0, f0), s1, f1); + uint8x8_t blend_u8 = vrshrn_n_u16(blend, 3); + vst1_u8(dst_ptr, blend_u8); + + src_ptr += src_stride; + dst_ptr += 8; + } while (--i != 0); +} + +// Process a block which is a mutiple of 16 wide and any height. +static void var_filter_block2d_bil_large(const uint8_t *src_ptr, + uint8_t *dst_ptr, int src_stride, + int pixel_step, int dst_width, + int dst_height, int filter_offset) { + const uint8x8_t f0 = vdup_n_u8(8 - filter_offset); + const uint8x8_t f1 = vdup_n_u8(filter_offset); + + int i = dst_height; + do { + int j = 0; + do { + uint8x16_t s0 = vld1q_u8(src_ptr + j); + uint8x16_t s1 = vld1q_u8(src_ptr + j + pixel_step); + uint16x8_t blend_l = + vmlal_u8(vmull_u8(vget_low_u8(s0), f0), vget_low_u8(s1), f1); + uint16x8_t blend_h = + vmlal_u8(vmull_u8(vget_high_u8(s0), f0), vget_high_u8(s1), f1); + uint8x8_t out_lo = vrshrn_n_u16(blend_l, 3); + uint8x8_t out_hi = vrshrn_n_u16(blend_h, 3); + vst1q_u8(dst_ptr + j, vcombine_u8(out_lo, out_hi)); + + j += 16; + } while (j < dst_width); + + src_ptr += src_stride; + dst_ptr += dst_width; + } while (--i != 0); +} + +static void var_filter_block2d_bil_w16(const uint8_t *src_ptr, uint8_t *dst_ptr, + int src_stride, int pixel_step, + int dst_height, int filter_offset) { + var_filter_block2d_bil_large(src_ptr, dst_ptr, src_stride, pixel_step, 16, + dst_height, filter_offset); +} +static void var_filter_block2d_bil_w32(const uint8_t *src_ptr, uint8_t *dst_ptr, + int src_stride, int pixel_step, + int dst_height, int filter_offset) { + var_filter_block2d_bil_large(src_ptr, dst_ptr, src_stride, pixel_step, 32, + dst_height, filter_offset); +} +static void var_filter_block2d_bil_w64(const uint8_t *src_ptr, uint8_t *dst_ptr, + int src_stride, int pixel_step, + int dst_height, int filter_offset) { + var_filter_block2d_bil_large(src_ptr, dst_ptr, src_stride, pixel_step, 64, + dst_height, filter_offset); +} + +static void var_filter_block2d_avg(const uint8_t *src_ptr, uint8_t *dst_ptr, + int src_stride, int pixel_step, + int dst_width, int dst_height) { + int i = dst_height; + + // We only specialize on the filter values for large block sizes (>= 16x16.) + assert(dst_width >= 16 && dst_width % 16 == 0); + + do { + int j = 0; + do { + uint8x16_t s0 = vld1q_u8(src_ptr + j); + uint8x16_t s1 = vld1q_u8(src_ptr + j + pixel_step); + uint8x16_t avg = vrhaddq_u8(s0, s1); + vst1q_u8(dst_ptr + j, avg); + + j += 16; + } while (j < dst_width); + + src_ptr += src_stride; + dst_ptr += dst_width; + } while (--i != 0); +} + +#define SUBPEL_VARIANCE_WXH_NEON(w, h, padding) \ + unsigned int vpx_sub_pixel_variance##w##x##h##_neon( \ + const uint8_t *src, int src_stride, int xoffset, int yoffset, \ + const uint8_t *ref, int ref_stride, uint32_t *sse) { \ + uint8_t tmp0[w * (h + padding)]; \ + uint8_t tmp1[w * h]; \ + var_filter_block2d_bil_w##w(src, tmp0, src_stride, 1, (h + padding), \ + xoffset); \ + var_filter_block2d_bil_w##w(tmp0, tmp1, w, w, h, yoffset); \ + return vpx_variance##w##x##h(tmp1, w, ref, ref_stride, sse); \ + } + +#define SPECIALIZED_SUBPEL_VARIANCE_WXH_NEON(w, h, padding) \ + unsigned int vpx_sub_pixel_variance##w##x##h##_neon( \ + const uint8_t *src, int src_stride, int xoffset, int yoffset, \ + const uint8_t *ref, int ref_stride, unsigned int *sse) { \ + if (xoffset == 0) { \ + if (yoffset == 0) { \ + return vpx_variance##w##x##h(src, src_stride, ref, ref_stride, sse); \ + } else if (yoffset == 4) { \ + uint8_t tmp[w * h]; \ + var_filter_block2d_avg(src, tmp, src_stride, src_stride, w, h); \ + return vpx_variance##w##x##h(tmp, w, ref, ref_stride, sse); \ + } else { \ + uint8_t tmp[w * h]; \ + var_filter_block2d_bil_w##w(src, tmp, src_stride, src_stride, h, \ + yoffset); \ + return vpx_variance##w##x##h(tmp, w, ref, ref_stride, sse); \ + } \ + } else if (xoffset == 4) { \ + uint8_t tmp0[w * (h + padding)]; \ + if (yoffset == 0) { \ + var_filter_block2d_avg(src, tmp0, src_stride, 1, w, h); \ + return vpx_variance##w##x##h(tmp0, w, ref, ref_stride, sse); \ + } else if (yoffset == 4) { \ + uint8_t tmp1[w * (h + padding)]; \ + var_filter_block2d_avg(src, tmp0, src_stride, 1, w, (h + padding)); \ + var_filter_block2d_avg(tmp0, tmp1, w, w, w, h); \ + return vpx_variance##w##x##h(tmp1, w, ref, ref_stride, sse); \ + } else { \ + uint8_t tmp1[w * (h + padding)]; \ + var_filter_block2d_avg(src, tmp0, src_stride, 1, w, (h + padding)); \ + var_filter_block2d_bil_w##w(tmp0, tmp1, w, w, h, yoffset); \ + return vpx_variance##w##x##h(tmp1, w, ref, ref_stride, sse); \ + } \ + } else { \ + uint8_t tmp0[w * (h + padding)]; \ + if (yoffset == 0) { \ + var_filter_block2d_bil_w##w(src, tmp0, src_stride, 1, h, xoffset); \ + return vpx_variance##w##x##h(tmp0, w, ref, ref_stride, sse); \ + } else if (yoffset == 4) { \ + uint8_t tmp1[w * h]; \ + var_filter_block2d_bil_w##w(src, tmp0, src_stride, 1, (h + padding), \ + xoffset); \ + var_filter_block2d_avg(tmp0, tmp1, w, w, w, h); \ + return vpx_variance##w##x##h(tmp1, w, ref, ref_stride, sse); \ + } else { \ + uint8_t tmp1[w * h]; \ + var_filter_block2d_bil_w##w(src, tmp0, src_stride, 1, (h + padding), \ + xoffset); \ + var_filter_block2d_bil_w##w(tmp0, tmp1, w, w, h, yoffset); \ + return vpx_variance##w##x##h(tmp1, w, ref, ref_stride, sse); \ + } \ + } \ + } + +// 4x<h> blocks are processed two rows at a time, so require an extra row of +// padding. +SUBPEL_VARIANCE_WXH_NEON(4, 4, 2) +SUBPEL_VARIANCE_WXH_NEON(4, 8, 2) + +SUBPEL_VARIANCE_WXH_NEON(8, 4, 1) +SUBPEL_VARIANCE_WXH_NEON(8, 8, 1) +SUBPEL_VARIANCE_WXH_NEON(8, 16, 1) + +SPECIALIZED_SUBPEL_VARIANCE_WXH_NEON(16, 8, 1) +SPECIALIZED_SUBPEL_VARIANCE_WXH_NEON(16, 16, 1) +SPECIALIZED_SUBPEL_VARIANCE_WXH_NEON(16, 32, 1) + +SPECIALIZED_SUBPEL_VARIANCE_WXH_NEON(32, 16, 1) +SPECIALIZED_SUBPEL_VARIANCE_WXH_NEON(32, 32, 1) +SPECIALIZED_SUBPEL_VARIANCE_WXH_NEON(32, 64, 1) + +SPECIALIZED_SUBPEL_VARIANCE_WXH_NEON(64, 32, 1) +SPECIALIZED_SUBPEL_VARIANCE_WXH_NEON(64, 64, 1) + +// Combine bilinear filter with vpx_comp_avg_pred for blocks having width 4. +static void avg_pred_var_filter_block2d_bil_w4(const uint8_t *src_ptr, + uint8_t *dst_ptr, int src_stride, + int pixel_step, int dst_height, + int filter_offset, + const uint8_t *second_pred) { + const uint8x8_t f0 = vdup_n_u8(8 - filter_offset); + const uint8x8_t f1 = vdup_n_u8(filter_offset); + + int i = dst_height; + do { + uint8x8_t s0 = load_unaligned_u8(src_ptr, src_stride); + uint8x8_t s1 = load_unaligned_u8(src_ptr + pixel_step, src_stride); + uint16x8_t blend = vmlal_u8(vmull_u8(s0, f0), s1, f1); + uint8x8_t blend_u8 = vrshrn_n_u16(blend, 3); + + uint8x8_t p = vld1_u8(second_pred); + uint8x8_t avg = vrhadd_u8(blend_u8, p); + + vst1_u8(dst_ptr, avg); + + src_ptr += 2 * src_stride; + dst_ptr += 2 * 4; + second_pred += 2 * 4; + i -= 2; + } while (i != 0); +} + +// Combine bilinear filter with vpx_comp_avg_pred for blocks having width 8. +static void avg_pred_var_filter_block2d_bil_w8(const uint8_t *src_ptr, + uint8_t *dst_ptr, int src_stride, + int pixel_step, int dst_height, + int filter_offset, + const uint8_t *second_pred) { + const uint8x8_t f0 = vdup_n_u8(8 - filter_offset); + const uint8x8_t f1 = vdup_n_u8(filter_offset); + + int i = dst_height; + do { + uint8x8_t s0 = vld1_u8(src_ptr); + uint8x8_t s1 = vld1_u8(src_ptr + pixel_step); + uint16x8_t blend = vmlal_u8(vmull_u8(s0, f0), s1, f1); + uint8x8_t blend_u8 = vrshrn_n_u16(blend, 3); + + uint8x8_t p = vld1_u8(second_pred); + uint8x8_t avg = vrhadd_u8(blend_u8, p); + + vst1_u8(dst_ptr, avg); + + src_ptr += src_stride; + dst_ptr += 8; + second_pred += 8; + } while (--i > 0); +} + +// Combine bilinear filter with vpx_comp_avg_pred for large blocks. +static void avg_pred_var_filter_block2d_bil_large( + const uint8_t *src_ptr, uint8_t *dst_ptr, int src_stride, int pixel_step, + int dst_width, int dst_height, int filter_offset, + const uint8_t *second_pred) { + const uint8x8_t f0 = vdup_n_u8(8 - filter_offset); + const uint8x8_t f1 = vdup_n_u8(filter_offset); + + int i = dst_height; + do { + int j = 0; + do { + uint8x16_t s0 = vld1q_u8(src_ptr + j); + uint8x16_t s1 = vld1q_u8(src_ptr + j + pixel_step); + uint16x8_t blend_l = + vmlal_u8(vmull_u8(vget_low_u8(s0), f0), vget_low_u8(s1), f1); + uint16x8_t blend_h = + vmlal_u8(vmull_u8(vget_high_u8(s0), f0), vget_high_u8(s1), f1); + uint8x16_t blend_u8 = + vcombine_u8(vrshrn_n_u16(blend_l, 3), vrshrn_n_u16(blend_h, 3)); + + uint8x16_t p = vld1q_u8(second_pred); + uint8x16_t avg = vrhaddq_u8(blend_u8, p); + + vst1q_u8(dst_ptr + j, avg); + + j += 16; + second_pred += 16; + } while (j < dst_width); + + src_ptr += src_stride; + dst_ptr += dst_width; + } while (--i != 0); +} + +// Combine bilinear filter with vpx_comp_avg_pred for blocks having width 16. +static void avg_pred_var_filter_block2d_bil_w16( + const uint8_t *src_ptr, uint8_t *dst_ptr, int src_stride, int pixel_step, + int dst_height, int filter_offset, const uint8_t *second_pred) { + avg_pred_var_filter_block2d_bil_large(src_ptr, dst_ptr, src_stride, + pixel_step, 16, dst_height, + filter_offset, second_pred); +} + +// Combine bilinear filter with vpx_comp_avg_pred for blocks having width 32. +static void avg_pred_var_filter_block2d_bil_w32( + const uint8_t *src_ptr, uint8_t *dst_ptr, int src_stride, int pixel_step, + int dst_height, int filter_offset, const uint8_t *second_pred) { + avg_pred_var_filter_block2d_bil_large(src_ptr, dst_ptr, src_stride, + pixel_step, 32, dst_height, + filter_offset, second_pred); +} + +// Combine bilinear filter with vpx_comp_avg_pred for blocks having width 64. +static void avg_pred_var_filter_block2d_bil_w64( + const uint8_t *src_ptr, uint8_t *dst_ptr, int src_stride, int pixel_step, + int dst_height, int filter_offset, const uint8_t *second_pred) { + avg_pred_var_filter_block2d_bil_large(src_ptr, dst_ptr, src_stride, + pixel_step, 64, dst_height, + filter_offset, second_pred); +} + +// Combine averaging subpel filter with vpx_comp_avg_pred. +static void avg_pred_var_filter_block2d_avg(const uint8_t *src_ptr, + uint8_t *dst_ptr, int src_stride, + int pixel_step, int dst_width, + int dst_height, + const uint8_t *second_pred) { + int i = dst_height; + + // We only specialize on the filter values for large block sizes (>= 16x16.) + assert(dst_width >= 16 && dst_width % 16 == 0); + + do { + int j = 0; + do { + uint8x16_t s0 = vld1q_u8(src_ptr + j); + uint8x16_t s1 = vld1q_u8(src_ptr + j + pixel_step); + uint8x16_t avg = vrhaddq_u8(s0, s1); + + uint8x16_t p = vld1q_u8(second_pred); + avg = vrhaddq_u8(avg, p); + + vst1q_u8(dst_ptr + j, avg); + + j += 16; + second_pred += 16; + } while (j < dst_width); + + src_ptr += src_stride; + dst_ptr += dst_width; + } while (--i != 0); +} + +// Implementation of vpx_comp_avg_pred for blocks having width >= 16. +static void avg_pred(const uint8_t *src_ptr, uint8_t *dst_ptr, int src_stride, + int dst_width, int dst_height, + const uint8_t *second_pred) { + int i = dst_height; + + // We only specialize on the filter values for large block sizes (>= 16x16.) + assert(dst_width >= 16 && dst_width % 16 == 0); + + do { + int j = 0; + do { + uint8x16_t s = vld1q_u8(src_ptr + j); + uint8x16_t p = vld1q_u8(second_pred); + + uint8x16_t avg = vrhaddq_u8(s, p); + + vst1q_u8(dst_ptr + j, avg); + + j += 16; + second_pred += 16; + } while (j < dst_width); + + src_ptr += src_stride; + dst_ptr += dst_width; + } while (--i != 0); +} + +#define SUBPEL_AVG_VARIANCE_WXH_NEON(w, h, padding) \ + unsigned int vpx_sub_pixel_avg_variance##w##x##h##_neon( \ + const uint8_t *src, int source_stride, int xoffset, int yoffset, \ + const uint8_t *ref, int ref_stride, uint32_t *sse, \ + const uint8_t *second_pred) { \ + uint8_t tmp0[w * (h + padding)]; \ + uint8_t tmp1[w * h]; \ + var_filter_block2d_bil_w##w(src, tmp0, source_stride, 1, (h + padding), \ + xoffset); \ + avg_pred_var_filter_block2d_bil_w##w(tmp0, tmp1, w, w, h, yoffset, \ + second_pred); \ + return vpx_variance##w##x##h(tmp1, w, ref, ref_stride, sse); \ + } + +#define SPECIALIZED_SUBPEL_AVG_VARIANCE_WXH_NEON(w, h, padding) \ + unsigned int vpx_sub_pixel_avg_variance##w##x##h##_neon( \ + const uint8_t *src, int source_stride, int xoffset, int yoffset, \ + const uint8_t *ref, int ref_stride, unsigned int *sse, \ + const uint8_t *second_pred) { \ + if (xoffset == 0) { \ + uint8_t tmp[w * h]; \ + if (yoffset == 0) { \ + avg_pred(src, tmp, source_stride, w, h, second_pred); \ + return vpx_variance##w##x##h(tmp, w, ref, ref_stride, sse); \ + } else if (yoffset == 4) { \ + avg_pred_var_filter_block2d_avg(src, tmp, source_stride, \ + source_stride, w, h, second_pred); \ + return vpx_variance##w##x##h(tmp, w, ref, ref_stride, sse); \ + } else { \ + avg_pred_var_filter_block2d_bil_w##w( \ + src, tmp, source_stride, source_stride, h, yoffset, second_pred); \ + return vpx_variance##w##x##h(tmp, w, ref, ref_stride, sse); \ + } \ + } else if (xoffset == 4) { \ + uint8_t tmp0[w * (h + padding)]; \ + if (yoffset == 0) { \ + avg_pred_var_filter_block2d_avg(src, tmp0, source_stride, 1, w, h, \ + second_pred); \ + return vpx_variance##w##x##h(tmp0, w, ref, ref_stride, sse); \ + } else if (yoffset == 4) { \ + uint8_t tmp1[w * (h + padding)]; \ + var_filter_block2d_avg(src, tmp0, source_stride, 1, w, (h + padding)); \ + avg_pred_var_filter_block2d_avg(tmp0, tmp1, w, w, w, h, second_pred); \ + return vpx_variance##w##x##h(tmp1, w, ref, ref_stride, sse); \ + } else { \ + uint8_t tmp1[w * (h + padding)]; \ + var_filter_block2d_avg(src, tmp0, source_stride, 1, w, (h + padding)); \ + avg_pred_var_filter_block2d_bil_w##w(tmp0, tmp1, w, w, h, yoffset, \ + second_pred); \ + return vpx_variance##w##x##h(tmp1, w, ref, ref_stride, sse); \ + } \ + } else { \ + uint8_t tmp0[w * (h + padding)]; \ + if (yoffset == 0) { \ + avg_pred_var_filter_block2d_bil_w##w(src, tmp0, source_stride, 1, h, \ + xoffset, second_pred); \ + return vpx_variance##w##x##h(tmp0, w, ref, ref_stride, sse); \ + } else if (yoffset == 4) { \ + uint8_t tmp1[w * h]; \ + var_filter_block2d_bil_w##w(src, tmp0, source_stride, 1, \ + (h + padding), xoffset); \ + avg_pred_var_filter_block2d_avg(tmp0, tmp1, w, w, w, h, second_pred); \ + return vpx_variance##w##x##h(tmp1, w, ref, ref_stride, sse); \ + } else { \ + uint8_t tmp1[w * h]; \ + var_filter_block2d_bil_w##w(src, tmp0, source_stride, 1, \ + (h + padding), xoffset); \ + avg_pred_var_filter_block2d_bil_w##w(tmp0, tmp1, w, w, h, yoffset, \ + second_pred); \ + return vpx_variance##w##x##h(tmp1, w, ref, ref_stride, sse); \ + } \ + } \ + } + +// 4x<h> blocks are processed two rows at a time, so require an extra row of +// padding. +SUBPEL_AVG_VARIANCE_WXH_NEON(4, 4, 2) +SUBPEL_AVG_VARIANCE_WXH_NEON(4, 8, 2) + +SUBPEL_AVG_VARIANCE_WXH_NEON(8, 4, 1) +SUBPEL_AVG_VARIANCE_WXH_NEON(8, 8, 1) +SUBPEL_AVG_VARIANCE_WXH_NEON(8, 16, 1) + +SPECIALIZED_SUBPEL_AVG_VARIANCE_WXH_NEON(16, 8, 1) +SPECIALIZED_SUBPEL_AVG_VARIANCE_WXH_NEON(16, 16, 1) +SPECIALIZED_SUBPEL_AVG_VARIANCE_WXH_NEON(16, 32, 1) + +SPECIALIZED_SUBPEL_AVG_VARIANCE_WXH_NEON(32, 16, 1) +SPECIALIZED_SUBPEL_AVG_VARIANCE_WXH_NEON(32, 32, 1) +SPECIALIZED_SUBPEL_AVG_VARIANCE_WXH_NEON(32, 64, 1) + +SPECIALIZED_SUBPEL_AVG_VARIANCE_WXH_NEON(64, 32, 1) +SPECIALIZED_SUBPEL_AVG_VARIANCE_WXH_NEON(64, 64, 1) |