mirror of
https://github.com/hrydgard/ppsspp.git
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107 lines
3.6 KiB
C++
107 lines
3.6 KiB
C++
// Copyright (c) 2012- PPSSPP Project.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, version 2.0 or later versions.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official git repository and contact information can be found at
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// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
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#include "Common/Common.h"
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#include "Core/Util/AudioFormat.h"
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#include "Core/Util/AudioFormatNEON.h"
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#include "Globals.h"
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#ifdef _M_SSE
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#include <xmmintrin.h>
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#endif
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void AdjustVolumeBlockStandard(s16 *out, s16 *in, size_t size, int leftVol, int rightVol) {
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#ifdef _M_SSE
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if (leftVol <= 0x7fff && rightVol <= 0x7fff) {
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__m128i volume = _mm_set_epi16(leftVol, rightVol, leftVol, rightVol, leftVol, rightVol, leftVol, rightVol);
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while (size >= 16) {
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__m128i indata1 = _mm_loadu_si128((__m128i *)in);
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__m128i indata2 = _mm_loadu_si128((__m128i *)(in + 8));
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_mm_storeu_si128((__m128i *)out, _mm_mulhi_epi16(indata1, volume));
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_mm_storeu_si128((__m128i *)(out + 8), _mm_mulhi_epi16(indata2, volume));
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in += 16;
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out += 16;
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size -= 16;
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}
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} else {
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// We have to shift inside the loop to avoid the signed multiply issue.
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leftVol >>= 1;
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rightVol >>= 1;
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__m128i volume = _mm_set_epi16(leftVol, rightVol, leftVol, rightVol, leftVol, rightVol, leftVol, rightVol);
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while (size >= 16) {
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__m128i indata1 = _mm_loadu_si128((__m128i *)in);
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__m128i indata2 = _mm_loadu_si128((__m128i *)(in + 8));
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_mm_storeu_si128((__m128i *)out, _mm_slli_epi16(_mm_mulhi_epi16(indata1, volume), 1));
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_mm_storeu_si128((__m128i *)(out + 8), _mm_slli_epi16(_mm_mulhi_epi16(indata2, volume), 1));
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in += 16;
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out += 16;
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size -= 16;
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}
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}
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#endif
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for (size_t i = 0; i < size; i += 2) {
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out[i] = ApplySampleVolume(in[i], leftVol);
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out[i + 1] = ApplySampleVolume(in[i + 1], rightVol);
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}
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}
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void ConvertS16ToF32(float *out, const s16 *in, size_t size) {
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#ifdef _M_SSE
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const __m128i zero = _mm_setzero_si128();
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const __m128 scale = _mm_set_ps1(1.0f / 32767.0f);
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while (size >= 16) {
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__m128i indata1 = _mm_loadu_si128((__m128i *)in + 0);
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__m128i indata2 = _mm_loadu_si128((__m128i *)in + 1);
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// Now we unpack with "sign extension", by unpacking with 0xFFFF if zero is greater.
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__m128i insign1 = _mm_cmpgt_epi16(zero, indata1);
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__m128i insign2 = _mm_cmpgt_epi16(zero, indata2);
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__m128i indata1lo = _mm_unpacklo_epi16(indata1, insign1);
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__m128i indata1hi = _mm_unpackhi_epi16(indata1, insign1);
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__m128i indata2lo = _mm_unpacklo_epi16(indata2, insign2);
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__m128i indata2hi = _mm_unpackhi_epi16(indata2, insign2);
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_mm_storeu_ps(out + 0, _mm_mul_ps(_mm_cvtepi32_ps(indata1lo), scale));
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_mm_storeu_ps(out + 4, _mm_mul_ps(_mm_cvtepi32_ps(indata1hi), scale));
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_mm_storeu_ps(out + 8, _mm_mul_ps(_mm_cvtepi32_ps(indata2lo), scale));
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_mm_storeu_ps(out + 12, _mm_mul_ps(_mm_cvtepi32_ps(indata2hi), scale));
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in += 16;
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out += 16;
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size -= 16;
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}
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#endif
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for (size_t i = 0; i < size; i++) {
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out[i] = in[i] * (1.0f / 32767.0f);
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}
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}
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#ifndef _M_SSE
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AdjustVolumeBlockFunc AdjustVolumeBlock = &AdjustVolumeBlockStandard;
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// This has to be done after CPUDetect has done its magic.
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void SetupAudioFormats() {
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#ifdef HAVE_ARMV7
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if (cpu_info.bNEON) {
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AdjustVolumeBlock = &AdjustVolumeBlockNEON;
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}
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#endif
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}
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#else
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void SetupAudioFormats() {
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}
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#endif
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