/* * 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 the implementation of function * WebRtcSpl_MaxAbsValueW16() * * The description header can be found in signal_processing_library.h. * */ #include "rtc_base/checks.h" #include "common_audio/signal_processing/include/signal_processing_library.h" // Maximum absolute value of word16 vector. int16_t WebRtcSpl_MaxAbsValueW16_mips(const int16_t* vector, size_t length) { int32_t totMax = 0; int32_t tmp32_0, tmp32_1, tmp32_2, tmp32_3; size_t i, loop_size; RTC_DCHECK_GT(length, 0); #if defined(MIPS_DSP_R1) const int32_t* tmpvec32 = (int32_t*)vector; loop_size = length >> 4; for (i = 0; i < loop_size; i++) { __asm__ volatile ( "lw %[tmp32_0], 0(%[tmpvec32]) \n\t" "lw %[tmp32_1], 4(%[tmpvec32]) \n\t" "lw %[tmp32_2], 8(%[tmpvec32]) \n\t" "lw %[tmp32_3], 12(%[tmpvec32]) \n\t" "absq_s.ph %[tmp32_0], %[tmp32_0] \n\t" "absq_s.ph %[tmp32_1], %[tmp32_1] \n\t" "cmp.lt.ph %[totMax], %[tmp32_0] \n\t" "pick.ph %[totMax], %[tmp32_0], %[totMax] \n\t" "lw %[tmp32_0], 16(%[tmpvec32]) \n\t" "absq_s.ph %[tmp32_2], %[tmp32_2] \n\t" "cmp.lt.ph %[totMax], %[tmp32_1] \n\t" "pick.ph %[totMax], %[tmp32_1], %[totMax] \n\t" "lw %[tmp32_1], 20(%[tmpvec32]) \n\t" "absq_s.ph %[tmp32_3], %[tmp32_3] \n\t" "cmp.lt.ph %[totMax], %[tmp32_2] \n\t" "pick.ph %[totMax], %[tmp32_2], %[totMax] \n\t" "lw %[tmp32_2], 24(%[tmpvec32]) \n\t" "cmp.lt.ph %[totMax], %[tmp32_3] \n\t" "pick.ph %[totMax], %[tmp32_3], %[totMax] \n\t" "lw %[tmp32_3], 28(%[tmpvec32]) \n\t" "absq_s.ph %[tmp32_0], %[tmp32_0] \n\t" "absq_s.ph %[tmp32_1], %[tmp32_1] \n\t" "cmp.lt.ph %[totMax], %[tmp32_0] \n\t" "pick.ph %[totMax], %[tmp32_0], %[totMax] \n\t" "absq_s.ph %[tmp32_2], %[tmp32_2] \n\t" "cmp.lt.ph %[totMax], %[tmp32_1] \n\t" "pick.ph %[totMax], %[tmp32_1], %[totMax] \n\t" "absq_s.ph %[tmp32_3], %[tmp32_3] \n\t" "cmp.lt.ph %[totMax], %[tmp32_2] \n\t" "pick.ph %[totMax], %[tmp32_2], %[totMax] \n\t" "cmp.lt.ph %[totMax], %[tmp32_3] \n\t" "pick.ph %[totMax], %[tmp32_3], %[totMax] \n\t" "addiu %[tmpvec32], %[tmpvec32], 32 \n\t" : [tmp32_0] "=&r" (tmp32_0), [tmp32_1] "=&r" (tmp32_1), [tmp32_2] "=&r" (tmp32_2), [tmp32_3] "=&r" (tmp32_3), [totMax] "+r" (totMax), [tmpvec32] "+r" (tmpvec32) : : "memory" ); } __asm__ volatile ( "rotr %[tmp32_0], %[totMax], 16 \n\t" "cmp.lt.ph %[totMax], %[tmp32_0] \n\t" "pick.ph %[totMax], %[tmp32_0], %[totMax] \n\t" "packrl.ph %[totMax], $0, %[totMax] \n\t" : [tmp32_0] "=&r" (tmp32_0), [totMax] "+r" (totMax) : ); loop_size = length & 0xf; for (i = 0; i < loop_size; i++) { __asm__ volatile ( "lh %[tmp32_0], 0(%[tmpvec32]) \n\t" "addiu %[tmpvec32], %[tmpvec32], 2 \n\t" "absq_s.w %[tmp32_0], %[tmp32_0] \n\t" "slt %[tmp32_1], %[totMax], %[tmp32_0] \n\t" "movn %[totMax], %[tmp32_0], %[tmp32_1] \n\t" : [tmp32_0] "=&r" (tmp32_0), [tmp32_1] "=&r" (tmp32_1), [tmpvec32] "+r" (tmpvec32), [totMax] "+r" (totMax) : : "memory" ); } #else // #if defined(MIPS_DSP_R1) int32_t v16MaxMax = WEBRTC_SPL_WORD16_MAX; int32_t r, r1, r2, r3; const int16_t* tmpvector = vector; loop_size = length >> 4; for (i = 0; i < loop_size; i++) { __asm__ volatile ( "lh %[tmp32_0], 0(%[tmpvector]) \n\t" "lh %[tmp32_1], 2(%[tmpvector]) \n\t" "lh %[tmp32_2], 4(%[tmpvector]) \n\t" "lh %[tmp32_3], 6(%[tmpvector]) \n\t" "abs %[tmp32_0], %[tmp32_0] \n\t" "abs %[tmp32_1], %[tmp32_1] \n\t" "abs %[tmp32_2], %[tmp32_2] \n\t" "abs %[tmp32_3], %[tmp32_3] \n\t" "slt %[r], %[totMax], %[tmp32_0] \n\t" "movn %[totMax], %[tmp32_0], %[r] \n\t" "slt %[r1], %[totMax], %[tmp32_1] \n\t" "movn %[totMax], %[tmp32_1], %[r1] \n\t" "slt %[r2], %[totMax], %[tmp32_2] \n\t" "movn %[totMax], %[tmp32_2], %[r2] \n\t" "slt %[r3], %[totMax], %[tmp32_3] \n\t" "movn %[totMax], %[tmp32_3], %[r3] \n\t" "lh %[tmp32_0], 8(%[tmpvector]) \n\t" "lh %[tmp32_1], 10(%[tmpvector]) \n\t" "lh %[tmp32_2], 12(%[tmpvector]) \n\t" "lh %[tmp32_3], 14(%[tmpvector]) \n\t" "abs %[tmp32_0], %[tmp32_0] \n\t" "abs %[tmp32_1], %[tmp32_1] \n\t" "abs %[tmp32_2], %[tmp32_2] \n\t" "abs %[tmp32_3], %[tmp32_3] \n\t" "slt %[r], %[totMax], %[tmp32_0] \n\t" "movn %[totMax], %[tmp32_0], %[r] \n\t" "slt %[r1], %[totMax], %[tmp32_1] \n\t" "movn %[totMax], %[tmp32_1], %[r1] \n\t" "slt %[r2], %[totMax], %[tmp32_2] \n\t" "movn %[totMax], %[tmp32_2], %[r2] \n\t" "slt %[r3], %[totMax], %[tmp32_3] \n\t" "movn %[totMax], %[tmp32_3], %[r3] \n\t" "lh %[tmp32_0], 16(%[tmpvector]) \n\t" "lh %[tmp32_1], 18(%[tmpvector]) \n\t" "lh %[tmp32_2], 20(%[tmpvector]) \n\t" "lh %[tmp32_3], 22(%[tmpvector]) \n\t" "abs %[tmp32_0], %[tmp32_0] \n\t" "abs %[tmp32_1], %[tmp32_1] \n\t" "abs %[tmp32_2], %[tmp32_2] \n\t" "abs %[tmp32_3], %[tmp32_3] \n\t" "slt %[r], %[totMax], %[tmp32_0] \n\t" "movn %[totMax], %[tmp32_0], %[r] \n\t" "slt %[r1], %[totMax], %[tmp32_1] \n\t" "movn %[totMax], %[tmp32_1], %[r1] \n\t" "slt %[r2], %[totMax], %[tmp32_2] \n\t" "movn %[totMax], %[tmp32_2], %[r2] \n\t" "slt %[r3], %[totMax], %[tmp32_3] \n\t" "movn %[totMax], %[tmp32_3], %[r3] \n\t" "lh %[tmp32_0], 24(%[tmpvector]) \n\t" "lh %[tmp32_1], 26(%[tmpvector]) \n\t" "lh %[tmp32_2], 28(%[tmpvector]) \n\t" "lh %[tmp32_3], 30(%[tmpvector]) \n\t" "abs %[tmp32_0], %[tmp32_0] \n\t" "abs %[tmp32_1], %[tmp32_1] \n\t" "abs %[tmp32_2], %[tmp32_2] \n\t" "abs %[tmp32_3], %[tmp32_3] \n\t" "slt %[r], %[totMax], %[tmp32_0] \n\t" "movn %[totMax], %[tmp32_0], %[r] \n\t" "slt %[r1], %[totMax], %[tmp32_1] \n\t" "movn %[totMax], %[tmp32_1], %[r1] \n\t" "slt %[r2], %[totMax], %[tmp32_2] \n\t" "movn %[totMax], %[tmp32_2], %[r2] \n\t" "slt %[r3], %[totMax], %[tmp32_3] \n\t" "movn %[totMax], %[tmp32_3], %[r3] \n\t" "addiu %[tmpvector], %[tmpvector], 32 \n\t" : [tmp32_0] "=&r" (tmp32_0), [tmp32_1] "=&r" (tmp32_1), [tmp32_2] "=&r" (tmp32_2), [tmp32_3] "=&r" (tmp32_3), [totMax] "+r" (totMax), [r] "=&r" (r), [tmpvector] "+r" (tmpvector), [r1] "=&r" (r1), [r2] "=&r" (r2), [r3] "=&r" (r3) : : "memory" ); } loop_size = length & 0xf; for (i = 0; i < loop_size; i++) { __asm__ volatile ( "lh %[tmp32_0], 0(%[tmpvector]) \n\t" "addiu %[tmpvector], %[tmpvector], 2 \n\t" "abs %[tmp32_0], %[tmp32_0] \n\t" "slt %[tmp32_1], %[totMax], %[tmp32_0] \n\t" "movn %[totMax], %[tmp32_0], %[tmp32_1] \n\t" : [tmp32_0] "=&r" (tmp32_0), [tmp32_1] "=&r" (tmp32_1), [tmpvector] "+r" (tmpvector), [totMax] "+r" (totMax) : : "memory" ); } __asm__ volatile ( "slt %[r], %[v16MaxMax], %[totMax] \n\t" "movn %[totMax], %[v16MaxMax], %[r] \n\t" : [totMax] "+r" (totMax), [r] "=&r" (r) : [v16MaxMax] "r" (v16MaxMax) ); #endif // #if defined(MIPS_DSP_R1) return (int16_t)totMax; } #if defined(MIPS_DSP_R1_LE) // Maximum absolute value of word32 vector. Version for MIPS platform. int32_t WebRtcSpl_MaxAbsValueW32_mips(const int32_t* vector, size_t length) { // Use uint32_t for the local variables, to accommodate the return value // of abs(0x80000000), which is 0x80000000. uint32_t absolute = 0, maximum = 0; int tmp1 = 0, max_value = 0x7fffffff; RTC_DCHECK_GT(length, 0); __asm__ volatile ( ".set push \n\t" ".set noreorder \n\t" "1: \n\t" "lw %[absolute], 0(%[vector]) \n\t" "absq_s.w %[absolute], %[absolute] \n\t" "addiu %[length], %[length], -1 \n\t" "slt %[tmp1], %[maximum], %[absolute] \n\t" "movn %[maximum], %[absolute], %[tmp1] \n\t" "bgtz %[length], 1b \n\t" " addiu %[vector], %[vector], 4 \n\t" "slt %[tmp1], %[max_value], %[maximum] \n\t" "movn %[maximum], %[max_value], %[tmp1] \n\t" ".set pop \n\t" : [tmp1] "=&r" (tmp1), [maximum] "+r" (maximum), [absolute] "+r" (absolute) : [vector] "r" (vector), [length] "r" (length), [max_value] "r" (max_value) : "memory" ); return (int32_t)maximum; } #endif // #if defined(MIPS_DSP_R1_LE) // Maximum value of word16 vector. Version for MIPS platform. int16_t WebRtcSpl_MaxValueW16_mips(const int16_t* vector, size_t length) { int16_t maximum = WEBRTC_SPL_WORD16_MIN; int tmp1; int16_t value; RTC_DCHECK_GT(length, 0); __asm__ volatile ( ".set push \n\t" ".set noreorder \n\t" "1: \n\t" "lh %[value], 0(%[vector]) \n\t" "addiu %[length], %[length], -1 \n\t" "slt %[tmp1], %[maximum], %[value] \n\t" "movn %[maximum], %[value], %[tmp1] \n\t" "bgtz %[length], 1b \n\t" " addiu %[vector], %[vector], 2 \n\t" ".set pop \n\t" : [tmp1] "=&r" (tmp1), [maximum] "+r" (maximum), [value] "=&r" (value) : [vector] "r" (vector), [length] "r" (length) : "memory" ); return maximum; } // Maximum value of word32 vector. Version for MIPS platform. int32_t WebRtcSpl_MaxValueW32_mips(const int32_t* vector, size_t length) { int32_t maximum = WEBRTC_SPL_WORD32_MIN; int tmp1, value; RTC_DCHECK_GT(length, 0); __asm__ volatile ( ".set push \n\t" ".set noreorder \n\t" "1: \n\t" "lw %[value], 0(%[vector]) \n\t" "addiu %[length], %[length], -1 \n\t" "slt %[tmp1], %[maximum], %[value] \n\t" "movn %[maximum], %[value], %[tmp1] \n\t" "bgtz %[length], 1b \n\t" " addiu %[vector], %[vector], 4 \n\t" ".set pop \n\t" : [tmp1] "=&r" (tmp1), [maximum] "+r" (maximum), [value] "=&r" (value) : [vector] "r" (vector), [length] "r" (length) : "memory" ); return maximum; } // Minimum value of word16 vector. Version for MIPS platform. int16_t WebRtcSpl_MinValueW16_mips(const int16_t* vector, size_t length) { int16_t minimum = WEBRTC_SPL_WORD16_MAX; int tmp1; int16_t value; RTC_DCHECK_GT(length, 0); __asm__ volatile ( ".set push \n\t" ".set noreorder \n\t" "1: \n\t" "lh %[value], 0(%[vector]) \n\t" "addiu %[length], %[length], -1 \n\t" "slt %[tmp1], %[value], %[minimum] \n\t" "movn %[minimum], %[value], %[tmp1] \n\t" "bgtz %[length], 1b \n\t" " addiu %[vector], %[vector], 2 \n\t" ".set pop \n\t" : [tmp1] "=&r" (tmp1), [minimum] "+r" (minimum), [value] "=&r" (value) : [vector] "r" (vector), [length] "r" (length) : "memory" ); return minimum; } // Minimum value of word32 vector. Version for MIPS platform. int32_t WebRtcSpl_MinValueW32_mips(const int32_t* vector, size_t length) { int32_t minimum = WEBRTC_SPL_WORD32_MAX; int tmp1, value; RTC_DCHECK_GT(length, 0); __asm__ volatile ( ".set push \n\t" ".set noreorder \n\t" "1: \n\t" "lw %[value], 0(%[vector]) \n\t" "addiu %[length], %[length], -1 \n\t" "slt %[tmp1], %[value], %[minimum] \n\t" "movn %[minimum], %[value], %[tmp1] \n\t" "bgtz %[length], 1b \n\t" " addiu %[vector], %[vector], 4 \n\t" ".set pop \n\t" : [tmp1] "=&r" (tmp1), [minimum] "+r" (minimum), [value] "=&r" (value) : [vector] "r" (vector), [length] "r" (length) : "memory" ); return minimum; }