diff options
Diffstat (limited to 'media/libvpx/libvpx/vpx_dsp/arm/vpx_convolve_avg_neon.c')
| -rw-r--r-- | media/libvpx/libvpx/vpx_dsp/arm/vpx_convolve_avg_neon.c | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vpx_dsp/arm/vpx_convolve_avg_neon.c b/media/libvpx/libvpx/vpx_dsp/arm/vpx_convolve_avg_neon.c new file mode 100644 index 0000000000..8e3ee599f4 --- /dev/null +++ b/media/libvpx/libvpx/vpx_dsp/arm/vpx_convolve_avg_neon.c @@ -0,0 +1,139 @@ +/* + * 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/vpx_integer.h" + +void vpx_convolve_avg_neon(const uint8_t *src, ptrdiff_t src_stride, + uint8_t *dst, ptrdiff_t dst_stride, + const InterpKernel *filter, int x0_q4, int x_step_q4, + int y0_q4, int y_step_q4, int w, int h) { + (void)filter; + (void)x0_q4; + (void)x_step_q4; + (void)y0_q4; + (void)y_step_q4; + + if (w < 8) { // avg4 + uint8x8_t s0, s1; + uint8x8_t dd0 = vdup_n_u8(0); + uint32x2x2_t s01; + do { + s0 = vld1_u8(src); + src += src_stride; + s1 = vld1_u8(src); + src += src_stride; + s01 = vzip_u32(vreinterpret_u32_u8(s0), vreinterpret_u32_u8(s1)); + dd0 = vreinterpret_u8_u32( + vld1_lane_u32((const uint32_t *)dst, vreinterpret_u32_u8(dd0), 0)); + dd0 = vreinterpret_u8_u32(vld1_lane_u32( + (const uint32_t *)(dst + dst_stride), vreinterpret_u32_u8(dd0), 1)); + dd0 = vrhadd_u8(vreinterpret_u8_u32(s01.val[0]), dd0); + vst1_lane_u32((uint32_t *)dst, vreinterpret_u32_u8(dd0), 0); + dst += dst_stride; + vst1_lane_u32((uint32_t *)dst, vreinterpret_u32_u8(dd0), 1); + dst += dst_stride; + h -= 2; + } while (h != 0); + } else if (w == 8) { // avg8 + uint8x8_t s0, s1, d0, d1; + uint8x16_t s01, d01; + do { + s0 = vld1_u8(src); + src += src_stride; + s1 = vld1_u8(src); + src += src_stride; + d0 = vld1_u8(dst); + d1 = vld1_u8(dst + dst_stride); + + s01 = vcombine_u8(s0, s1); + d01 = vcombine_u8(d0, d1); + d01 = vrhaddq_u8(s01, d01); + + vst1_u8(dst, vget_low_u8(d01)); + dst += dst_stride; + vst1_u8(dst, vget_high_u8(d01)); + dst += dst_stride; + h -= 2; + } while (h != 0); + } else if (w < 32) { // avg16 + uint8x16_t s0, s1, d0, d1; + do { + s0 = vld1q_u8(src); + src += src_stride; + s1 = vld1q_u8(src); + src += src_stride; + d0 = vld1q_u8(dst); + d1 = vld1q_u8(dst + dst_stride); + + d0 = vrhaddq_u8(s0, d0); + d1 = vrhaddq_u8(s1, d1); + + vst1q_u8(dst, d0); + dst += dst_stride; + vst1q_u8(dst, d1); + dst += dst_stride; + h -= 2; + } while (h != 0); + } else if (w == 32) { // avg32 + uint8x16_t s0, s1, s2, s3, d0, d1, d2, d3; + do { + s0 = vld1q_u8(src); + s1 = vld1q_u8(src + 16); + src += src_stride; + s2 = vld1q_u8(src); + s3 = vld1q_u8(src + 16); + src += src_stride; + d0 = vld1q_u8(dst); + d1 = vld1q_u8(dst + 16); + d2 = vld1q_u8(dst + dst_stride); + d3 = vld1q_u8(dst + dst_stride + 16); + + d0 = vrhaddq_u8(s0, d0); + d1 = vrhaddq_u8(s1, d1); + d2 = vrhaddq_u8(s2, d2); + d3 = vrhaddq_u8(s3, d3); + + vst1q_u8(dst, d0); + vst1q_u8(dst + 16, d1); + dst += dst_stride; + vst1q_u8(dst, d2); + vst1q_u8(dst + 16, d3); + dst += dst_stride; + h -= 2; + } while (h != 0); + } else { // avg64 + uint8x16_t s0, s1, s2, s3, d0, d1, d2, d3; + do { + s0 = vld1q_u8(src); + s1 = vld1q_u8(src + 16); + s2 = vld1q_u8(src + 32); + s3 = vld1q_u8(src + 48); + src += src_stride; + d0 = vld1q_u8(dst); + d1 = vld1q_u8(dst + 16); + d2 = vld1q_u8(dst + 32); + d3 = vld1q_u8(dst + 48); + + d0 = vrhaddq_u8(s0, d0); + d1 = vrhaddq_u8(s1, d1); + d2 = vrhaddq_u8(s2, d2); + d3 = vrhaddq_u8(s3, d3); + + vst1q_u8(dst, d0); + vst1q_u8(dst + 16, d1); + vst1q_u8(dst + 32, d2); + vst1q_u8(dst + 48, d3); + dst += dst_stride; + } while (--h); + } +} |