diff options
Diffstat (limited to 'media/libvpx/libvpx/vpx_dsp/arm/avg_pred_neon.c')
-rw-r--r-- | media/libvpx/libvpx/vpx_dsp/arm/avg_pred_neon.c | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vpx_dsp/arm/avg_pred_neon.c b/media/libvpx/libvpx/vpx_dsp/arm/avg_pred_neon.c new file mode 100644 index 0000000000..5afdece0ab --- /dev/null +++ b/media/libvpx/libvpx/vpx_dsp/arm/avg_pred_neon.c @@ -0,0 +1,65 @@ +/* + * 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 <assert.h> + +#include "./vpx_dsp_rtcd.h" +#include "vpx_dsp/arm/mem_neon.h" + +void vpx_comp_avg_pred_neon(uint8_t *comp, const uint8_t *pred, int width, + int height, const uint8_t *ref, int ref_stride) { + if (width > 8) { + int x, y = height; + do { + for (x = 0; x < width; x += 16) { + const uint8x16_t p = vld1q_u8(pred + x); + const uint8x16_t r = vld1q_u8(ref + x); + const uint8x16_t avg = vrhaddq_u8(p, r); + vst1q_u8(comp + x, avg); + } + comp += width; + pred += width; + ref += ref_stride; + } while (--y); + } else if (width == 8) { + int i = width * height; + do { + const uint8x16_t p = vld1q_u8(pred); + uint8x16_t r; + const uint8x8_t r_0 = vld1_u8(ref); + const uint8x8_t r_1 = vld1_u8(ref + ref_stride); + r = vcombine_u8(r_0, r_1); + ref += 2 * ref_stride; + r = vrhaddq_u8(r, p); + vst1q_u8(comp, r); + + pred += 16; + comp += 16; + i -= 16; + } while (i); + } else { + int i = width * height; + assert(width == 4); + do { + const uint8x16_t p = vld1q_u8(pred); + uint8x16_t r; + + r = load_unaligned_u8q(ref, ref_stride); + ref += 4 * ref_stride; + r = vrhaddq_u8(r, p); + vst1q_u8(comp, r); + + pred += 16; + comp += 16; + i -= 16; + } while (i); + } +} |