| /* |
| * 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 header file includes the inline functions in |
| // the fix point signal processing library. |
| |
| #ifndef COMMON_AUDIO_SIGNAL_PROCESSING_INCLUDE_SPL_INL_MIPS_H_ |
| #define COMMON_AUDIO_SIGNAL_PROCESSING_INCLUDE_SPL_INL_MIPS_H_ |
| |
| static __inline int32_t WEBRTC_SPL_MUL_16_16(int32_t a, |
| int32_t b) { |
| int32_t value32 = 0; |
| int32_t a1 = 0, b1 = 0; |
| |
| __asm __volatile( |
| #if defined(MIPS32_R2_LE) |
| "seh %[a1], %[a] \n\t" |
| "seh %[b1], %[b] \n\t" |
| #else |
| "sll %[a1], %[a], 16 \n\t" |
| "sll %[b1], %[b], 16 \n\t" |
| "sra %[a1], %[a1], 16 \n\t" |
| "sra %[b1], %[b1], 16 \n\t" |
| #endif |
| "mul %[value32], %[a1], %[b1] \n\t" |
| : [value32] "=r" (value32), [a1] "=&r" (a1), [b1] "=&r" (b1) |
| : [a] "r" (a), [b] "r" (b) |
| : "hi", "lo"); |
| return value32; |
| } |
| |
| static __inline int32_t WEBRTC_SPL_MUL_16_32_RSFT16(int16_t a, |
| int32_t b) { |
| int32_t value32 = 0, b1 = 0, b2 = 0; |
| int32_t a1 = 0; |
| |
| __asm __volatile( |
| #if defined(MIPS32_R2_LE) |
| "seh %[a1], %[a] \n\t" |
| #else |
| "sll %[a1], %[a], 16 \n\t" |
| "sra %[a1], %[a1], 16 \n\t" |
| #endif |
| "andi %[b2], %[b], 0xFFFF \n\t" |
| "sra %[b1], %[b], 16 \n\t" |
| "sra %[b2], %[b2], 1 \n\t" |
| "mul %[value32], %[a1], %[b1] \n\t" |
| "mul %[b2], %[a1], %[b2] \n\t" |
| "addiu %[b2], %[b2], 0x4000 \n\t" |
| "sra %[b2], %[b2], 15 \n\t" |
| "addu %[value32], %[value32], %[b2] \n\t" |
| : [value32] "=&r" (value32), [b1] "=&r" (b1), [b2] "=&r" (b2), |
| [a1] "=&r" (a1) |
| : [a] "r" (a), [b] "r" (b) |
| : "hi", "lo"); |
| return value32; |
| } |
| |
| #if defined(MIPS_DSP_R1_LE) |
| static __inline int16_t WebRtcSpl_SatW32ToW16(int32_t value32) { |
| __asm __volatile( |
| "shll_s.w %[value32], %[value32], 16 \n\t" |
| "sra %[value32], %[value32], 16 \n\t" |
| : [value32] "+r" (value32) |
| :); |
| int16_t out16 = (int16_t)value32; |
| return out16; |
| } |
| |
| static __inline int16_t WebRtcSpl_AddSatW16(int16_t a, int16_t b) { |
| int32_t value32 = 0; |
| |
| __asm __volatile( |
| "addq_s.ph %[value32], %[a], %[b] \n\t" |
| : [value32] "=r" (value32) |
| : [a] "r" (a), [b] "r" (b) ); |
| return (int16_t)value32; |
| } |
| |
| static __inline int32_t WebRtcSpl_AddSatW32(int32_t l_var1, int32_t l_var2) { |
| int32_t l_sum; |
| |
| __asm __volatile( |
| "addq_s.w %[l_sum], %[l_var1], %[l_var2] \n\t" |
| : [l_sum] "=r" (l_sum) |
| : [l_var1] "r" (l_var1), [l_var2] "r" (l_var2) ); |
| |
| return l_sum; |
| } |
| |
| static __inline int16_t WebRtcSpl_SubSatW16(int16_t var1, int16_t var2) { |
| int32_t value32; |
| |
| __asm __volatile( |
| "subq_s.ph %[value32], %[var1], %[var2] \n\t" |
| : [value32] "=r" (value32) |
| : [var1] "r" (var1), [var2] "r" (var2) ); |
| |
| return (int16_t)value32; |
| } |
| |
| static __inline int32_t WebRtcSpl_SubSatW32(int32_t l_var1, int32_t l_var2) { |
| int32_t l_diff; |
| |
| __asm __volatile( |
| "subq_s.w %[l_diff], %[l_var1], %[l_var2] \n\t" |
| : [l_diff] "=r" (l_diff) |
| : [l_var1] "r" (l_var1), [l_var2] "r" (l_var2) ); |
| |
| return l_diff; |
| } |
| #endif |
| |
| static __inline int16_t WebRtcSpl_GetSizeInBits(uint32_t n) { |
| int bits = 0; |
| int i32 = 32; |
| |
| __asm __volatile( |
| "clz %[bits], %[n] \n\t" |
| "subu %[bits], %[i32], %[bits] \n\t" |
| : [bits] "=&r" (bits) |
| : [n] "r" (n), [i32] "r" (i32) ); |
| |
| return (int16_t)bits; |
| } |
| |
| static __inline int16_t WebRtcSpl_NormW32(int32_t a) { |
| int zeros = 0; |
| |
| __asm __volatile( |
| ".set push \n\t" |
| ".set noreorder \n\t" |
| "bnez %[a], 1f \n\t" |
| " sra %[zeros], %[a], 31 \n\t" |
| "b 2f \n\t" |
| " move %[zeros], $zero \n\t" |
| "1: \n\t" |
| "xor %[zeros], %[a], %[zeros] \n\t" |
| "clz %[zeros], %[zeros] \n\t" |
| "addiu %[zeros], %[zeros], -1 \n\t" |
| "2: \n\t" |
| ".set pop \n\t" |
| : [zeros]"=&r"(zeros) |
| : [a] "r" (a) ); |
| |
| return (int16_t)zeros; |
| } |
| |
| static __inline int16_t WebRtcSpl_NormU32(uint32_t a) { |
| int zeros = 0; |
| |
| __asm __volatile( |
| "clz %[zeros], %[a] \n\t" |
| : [zeros] "=r" (zeros) |
| : [a] "r" (a) ); |
| |
| return (int16_t)(zeros & 0x1f); |
| } |
| |
| static __inline int16_t WebRtcSpl_NormW16(int16_t a) { |
| int zeros = 0; |
| int a0 = a << 16; |
| |
| __asm __volatile( |
| ".set push \n\t" |
| ".set noreorder \n\t" |
| "bnez %[a0], 1f \n\t" |
| " sra %[zeros], %[a0], 31 \n\t" |
| "b 2f \n\t" |
| " move %[zeros], $zero \n\t" |
| "1: \n\t" |
| "xor %[zeros], %[a0], %[zeros] \n\t" |
| "clz %[zeros], %[zeros] \n\t" |
| "addiu %[zeros], %[zeros], -1 \n\t" |
| "2: \n\t" |
| ".set pop \n\t" |
| : [zeros]"=&r"(zeros) |
| : [a0] "r" (a0) ); |
| |
| return (int16_t)zeros; |
| } |
| |
| static __inline int32_t WebRtc_MulAccumW16(int16_t a, |
| int16_t b, |
| int32_t c) { |
| int32_t res = 0, c1 = 0; |
| __asm __volatile( |
| #if defined(MIPS32_R2_LE) |
| "seh %[a], %[a] \n\t" |
| "seh %[b], %[b] \n\t" |
| #else |
| "sll %[a], %[a], 16 \n\t" |
| "sll %[b], %[b], 16 \n\t" |
| "sra %[a], %[a], 16 \n\t" |
| "sra %[b], %[b], 16 \n\t" |
| #endif |
| "mul %[res], %[a], %[b] \n\t" |
| "addu %[c1], %[c], %[res] \n\t" |
| : [c1] "=r" (c1), [res] "=&r" (res) |
| : [a] "r" (a), [b] "r" (b), [c] "r" (c) |
| : "hi", "lo"); |
| return (c1); |
| } |
| |
| #endif // COMMON_AUDIO_SIGNAL_PROCESSING_INCLUDE_SPL_INL_MIPS_H_ |
