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 #include <assert.h> 11 12 #include "webrtc/common_audio/signal_processing/include/signal_processing_library.h" 13 14 void WebRtcSpl_FilterARFastQ12(const int16_t* data_in, 15 int16_t* data_out, 16 const int16_t* __restrict coefficients, 17 int coefficients_length, 18 int data_length) { 19 int r0, r1, r2, r3; 20 int coef0, offset; 21 int i, j, k; 22 int coefptr, outptr, tmpout, inptr; 23 #if !defined(MIPS_DSP_R1_LE) 24 int max16 = 0x7FFF; 25 int min16 = 0xFFFF8000; 26 #endif // #if !defined(MIPS_DSP_R1_LE) 27 28 assert(data_length > 0); 29 assert(coefficients_length > 1); 30 31 __asm __volatile ( 32 ".set push \n\t" 33 ".set noreorder \n\t" 34 "addiu %[i], %[data_length], 0 \n\t" 35 "lh %[coef0], 0(%[coefficients]) \n\t" 36 "addiu %[j], %[coefficients_length], -1 \n\t" 37 "andi %[k], %[j], 1 \n\t" 38 "sll %[offset], %[j], 1 \n\t" 39 "subu %[outptr], %[data_out], %[offset] \n\t" 40 "addiu %[inptr], %[data_in], 0 \n\t" 41 "bgtz %[k], 3f \n\t" 42 " addu %[coefptr], %[coefficients], %[offset] \n\t" 43 "1: \n\t" 44 "lh %[r0], 0(%[inptr]) \n\t" 45 "addiu %[i], %[i], -1 \n\t" 46 "addiu %[tmpout], %[outptr], 0 \n\t" 47 "mult %[r0], %[coef0] \n\t" 48 "2: \n\t" 49 "lh %[r0], 0(%[tmpout]) \n\t" 50 "lh %[r1], 0(%[coefptr]) \n\t" 51 "lh %[r2], 2(%[tmpout]) \n\t" 52 "lh %[r3], -2(%[coefptr]) \n\t" 53 "addiu %[tmpout], %[tmpout], 4 \n\t" 54 "msub %[r0], %[r1] \n\t" 55 "msub %[r2], %[r3] \n\t" 56 "addiu %[j], %[j], -2 \n\t" 57 "bgtz %[j], 2b \n\t" 58 " addiu %[coefptr], %[coefptr], -4 \n\t" 59 #if defined(MIPS_DSP_R1_LE) 60 "extr_r.w %[r0], $ac0, 12 \n\t" 61 #else // #if defined(MIPS_DSP_R1_LE) 62 "mflo %[r0] \n\t" 63 #endif // #if defined(MIPS_DSP_R1_LE) 64 "addu %[coefptr], %[coefficients], %[offset] \n\t" 65 "addiu %[inptr], %[inptr], 2 \n\t" 66 "addiu %[j], %[coefficients_length], -1 \n\t" 67 #if defined(MIPS_DSP_R1_LE) 68 "shll_s.w %[r0], %[r0], 16 \n\t" 69 "sra %[r0], %[r0], 16 \n\t" 70 #else // #if defined(MIPS_DSP_R1_LE) 71 "addiu %[r0], %[r0], 2048 \n\t" 72 "sra %[r0], %[r0], 12 \n\t" 73 "slt %[r1], %[max16], %[r0] \n\t" 74 "movn %[r0], %[max16], %[r1] \n\t" 75 "slt %[r1], %[r0], %[min16] \n\t" 76 "movn %[r0], %[min16], %[r1] \n\t" 77 #endif // #if defined(MIPS_DSP_R1_LE) 78 "sh %[r0], 0(%[tmpout]) \n\t" 79 "bgtz %[i], 1b \n\t" 80 " addiu %[outptr], %[outptr], 2 \n\t" 81 "b 5f \n\t" 82 " nop \n\t" 83 "3: \n\t" 84 "lh %[r0], 0(%[inptr]) \n\t" 85 "addiu %[i], %[i], -1 \n\t" 86 "addiu %[tmpout], %[outptr], 0 \n\t" 87 "mult %[r0], %[coef0] \n\t" 88 "4: \n\t" 89 "lh %[r0], 0(%[tmpout]) \n\t" 90 "lh %[r1], 0(%[coefptr]) \n\t" 91 "lh %[r2], 2(%[tmpout]) \n\t" 92 "lh %[r3], -2(%[coefptr]) \n\t" 93 "addiu %[tmpout], %[tmpout], 4 \n\t" 94 "msub %[r0], %[r1] \n\t" 95 "msub %[r2], %[r3] \n\t" 96 "addiu %[j], %[j], -2 \n\t" 97 "bgtz %[j], 4b \n\t" 98 " addiu %[coefptr], %[coefptr], -4 \n\t" 99 "lh %[r0], 0(%[tmpout]) \n\t" 100 "lh %[r1], 0(%[coefptr]) \n\t" 101 "msub %[r0], %[r1] \n\t" 102 #if defined(MIPS_DSP_R1_LE) 103 "extr_r.w %[r0], $ac0, 12 \n\t" 104 #else // #if defined(MIPS_DSP_R1_LE) 105 "mflo %[r0] \n\t" 106 #endif // #if defined(MIPS_DSP_R1_LE) 107 "addu %[coefptr], %[coefficients], %[offset] \n\t" 108 "addiu %[inptr], %[inptr], 2 \n\t" 109 "addiu %[j], %[coefficients_length], -1 \n\t" 110 #if defined(MIPS_DSP_R1_LE) 111 "shll_s.w %[r0], %[r0], 16 \n\t" 112 "sra %[r0], %[r0], 16 \n\t" 113 #else // #if defined(MIPS_DSP_R1_LE) 114 "addiu %[r0], %[r0], 2048 \n\t" 115 "sra %[r0], %[r0], 12 \n\t" 116 "slt %[r1], %[max16], %[r0] \n\t" 117 "movn %[r0], %[max16], %[r1] \n\t" 118 "slt %[r1], %[r0], %[min16] \n\t" 119 "movn %[r0], %[min16], %[r1] \n\t" 120 #endif // #if defined(MIPS_DSP_R1_LE) 121 "sh %[r0], 2(%[tmpout]) \n\t" 122 "bgtz %[i], 3b \n\t" 123 " addiu %[outptr], %[outptr], 2 \n\t" 124 "5: \n\t" 125 ".set pop \n\t" 126 : [i] "=&r" (i), [j] "=&r" (j), [k] "=&r" (k), [r0] "=&r" (r0), 127 [r1] "=&r" (r1), [r2] "=&r" (r2), [r3] "=&r" (r3), 128 [coef0] "=&r" (coef0), [offset] "=&r" (offset), 129 [outptr] "=&r" (outptr), [inptr] "=&r" (inptr), 130 [coefptr] "=&r" (coefptr), [tmpout] "=&r" (tmpout) 131 : [coefficients] "r" (coefficients), [data_length] "r" (data_length), 132 [coefficients_length] "r" (coefficients_length), 133 #if !defined(MIPS_DSP_R1_LE) 134 [max16] "r" (max16), [min16] "r" (min16), 135 #endif 136 [data_out] "r" (data_out), [data_in] "r" (data_in) 137 : "hi", "lo", "memory" 138 ); 139 } 140 141
