| /* |
| * Copyright (c) 2013 The WebRTC 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. |
| */ |
| |
| |
| /* |
| * This file contains implementations of the functions |
| * WebRtcSpl_ScaleAndAddVectorsWithRound_mips() |
| */ |
| |
| #include "common_audio/signal_processing/include/signal_processing_library.h" |
| |
| int WebRtcSpl_ScaleAndAddVectorsWithRound_mips(const int16_t* in_vector1, |
| int16_t in_vector1_scale, |
| const int16_t* in_vector2, |
| int16_t in_vector2_scale, |
| int right_shifts, |
| int16_t* out_vector, |
| size_t length) { |
| int16_t r0 = 0, r1 = 0; |
| int16_t *in1 = (int16_t*)in_vector1; |
| int16_t *in2 = (int16_t*)in_vector2; |
| int16_t *out = out_vector; |
| size_t i = 0; |
| int value32 = 0; |
| |
| if (in_vector1 == NULL || in_vector2 == NULL || out_vector == NULL || |
| length == 0 || right_shifts < 0) { |
| return -1; |
| } |
| for (i = 0; i < length; i++) { |
| __asm __volatile ( |
| "lh %[r0], 0(%[in1]) \n\t" |
| "lh %[r1], 0(%[in2]) \n\t" |
| "mult %[r0], %[in_vector1_scale] \n\t" |
| "madd %[r1], %[in_vector2_scale] \n\t" |
| "extrv_r.w %[value32], $ac0, %[right_shifts] \n\t" |
| "addiu %[in1], %[in1], 2 \n\t" |
| "addiu %[in2], %[in2], 2 \n\t" |
| "sh %[value32], 0(%[out]) \n\t" |
| "addiu %[out], %[out], 2 \n\t" |
| : [value32] "=&r" (value32), [out] "+r" (out), [in1] "+r" (in1), |
| [in2] "+r" (in2), [r0] "=&r" (r0), [r1] "=&r" (r1) |
| : [in_vector1_scale] "r" (in_vector1_scale), |
| [in_vector2_scale] "r" (in_vector2_scale), |
| [right_shifts] "r" (right_shifts) |
| : "hi", "lo", "memory" |
| ); |
| } |
| return 0; |
| } |
