| /* |
| * Copyright (c) 2015 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 <stdlib.h> |
| |
| #include "./vpx_dsp_rtcd.h" |
| #include "vpx_dsp/mips/macros_msa.h" |
| |
| void vpx_plane_add_noise_msa(uint8_t *start_ptr, const int8_t *noise, |
| int blackclamp, int whiteclamp, int width, |
| int height, int32_t pitch) { |
| int i, j; |
| v16u8 pos0, pos1, ref0, ref1; |
| v16i8 black_clamp, white_clamp, both_clamp; |
| |
| black_clamp = __msa_fill_b(blackclamp); |
| white_clamp = __msa_fill_b(whiteclamp); |
| both_clamp = black_clamp + white_clamp; |
| both_clamp = -both_clamp; |
| |
| for (i = 0; i < height / 2; ++i) { |
| uint8_t *pos0_ptr = start_ptr + (2 * i) * pitch; |
| const int8_t *ref0_ptr = noise + (rand() & 0xff); |
| uint8_t *pos1_ptr = start_ptr + (2 * i + 1) * pitch; |
| const int8_t *ref1_ptr = noise + (rand() & 0xff); |
| for (j = width / 16; j--;) { |
| pos0 = LD_UB(pos0_ptr); |
| ref0 = LD_UB(ref0_ptr); |
| pos1 = LD_UB(pos1_ptr); |
| ref1 = LD_UB(ref1_ptr); |
| pos0 = __msa_subsus_u_b(pos0, black_clamp); |
| pos1 = __msa_subsus_u_b(pos1, black_clamp); |
| pos0 = __msa_subsus_u_b(pos0, both_clamp); |
| pos1 = __msa_subsus_u_b(pos1, both_clamp); |
| pos0 = __msa_subsus_u_b(pos0, white_clamp); |
| pos1 = __msa_subsus_u_b(pos1, white_clamp); |
| pos0 += ref0; |
| ST_UB(pos0, pos0_ptr); |
| pos1 += ref1; |
| ST_UB(pos1, pos1_ptr); |
| pos0_ptr += 16; |
| pos1_ptr += 16; |
| ref0_ptr += 16; |
| ref1_ptr += 16; |
| } |
| } |
| } |