andrew@webrtc.org | fccf64c | 2013-09-18 17:40:46 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2013 The WebRTC project authors. All Rights Reserved. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license |
| 5 | * that can be found in the LICENSE file in the root of the source |
| 6 | * tree. An additional intellectual property rights grant can be found |
| 7 | * in the file PATENTS. All contributing project authors may |
| 8 | * be found in the AUTHORS file in the root of the source tree. |
| 9 | */ |
| 10 | |
| 11 | |
| 12 | /* |
| 13 | * This file contains implementations of the functions |
| 14 | * WebRtcSpl_ScaleAndAddVectorsWithRound_mips() |
| 15 | */ |
| 16 | |
| 17 | #include "webrtc/common_audio/signal_processing/include/signal_processing_library.h" |
| 18 | |
| 19 | int WebRtcSpl_ScaleAndAddVectorsWithRound_mips(const int16_t* in_vector1, |
| 20 | int16_t in_vector1_scale, |
| 21 | const int16_t* in_vector2, |
| 22 | int16_t in_vector2_scale, |
| 23 | int right_shifts, |
| 24 | int16_t* out_vector, |
| 25 | int length) { |
| 26 | int16_t r0 = 0, r1 = 0; |
| 27 | int16_t *in1 = (int16_t*)in_vector1; |
| 28 | int16_t *in2 = (int16_t*)in_vector2; |
| 29 | int16_t *out = out_vector; |
| 30 | int i = 0, value32 = 0; |
| 31 | |
| 32 | if (in_vector1 == NULL || in_vector2 == NULL || out_vector == NULL || |
| 33 | length <= 0 || right_shifts < 0) { |
| 34 | return -1; |
| 35 | } |
| 36 | for (i = 0; i < length; i++) { |
| 37 | __asm __volatile ( |
| 38 | "lh %[r0], 0(%[in1]) \n\t" |
| 39 | "lh %[r1], 0(%[in2]) \n\t" |
| 40 | "mult %[r0], %[in_vector1_scale] \n\t" |
| 41 | "madd %[r1], %[in_vector2_scale] \n\t" |
| 42 | "extrv_r.w %[value32], $ac0, %[right_shifts] \n\t" |
| 43 | "addiu %[in1], %[in1], 2 \n\t" |
| 44 | "addiu %[in2], %[in2], 2 \n\t" |
| 45 | "sh %[value32], 0(%[out]) \n\t" |
| 46 | "addiu %[out], %[out], 2 \n\t" |
| 47 | : [value32] "=&r" (value32), [out] "+r" (out), [in1] "+r" (in1), |
| 48 | [in2] "+r" (in2), [r0] "=&r" (r0), [r1] "=&r" (r1) |
| 49 | : [in_vector1_scale] "r" (in_vector1_scale), |
| 50 | [in_vector2_scale] "r" (in_vector2_scale), |
| 51 | [right_shifts] "r" (right_shifts) |
| 52 | : "hi", "lo", "memory" |
| 53 | ); |
| 54 | } |
| 55 | return 0; |
| 56 | } |