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- /*
- * 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;
- }
- }
- }
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