mirror of
https://github.com/libretro/ppsspp.git
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79 lines
2.4 KiB
C++
79 lines
2.4 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 "Core/HLE/HLE.h"
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#include "Core/HLE/FunctionWrappers.h"
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#include "Core/MemMap.h"
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#include "Core/Reporting.h"
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u32 sceP3daBridgeInit(u32 channelsNum, u32 samplesNum)
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{
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ERROR_LOG_REPORT(SCEAUDIO, "UNIMPL sceP3daBridgeInit(%08x, %08x)", channelsNum, samplesNum);
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return 0;
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}
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u32 sceP3daBridgeExit()
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{
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ERROR_LOG_REPORT(SCEAUDIO, "UNIMPL sceP3daBridgeExit()");
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return 0;
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}
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static inline int getScaleValue(u32 channelsNum) {
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int val = 0;
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while (channelsNum > 1) {
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channelsNum >>= 1;
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val++;
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}
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return val;
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}
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u32 sceP3daBridgeCore(u32 p3daCoreAddr, u32 channelsNum, u32 samplesNum, u32 inputAddr, u32 outputAddr)
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{
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DEBUG_LOG(SCEAUDIO, "sceP3daBridgeCore(%08x, %08x, %08x, %08x, %08x)", p3daCoreAddr, channelsNum, samplesNum, inputAddr, outputAddr);
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if (Memory::IsValidAddress(inputAddr) && Memory::IsValidAddress(outputAddr)) {
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int scaleval = getScaleValue(channelsNum);
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s16* outbuf = (s16*)Memory::GetPointer(outputAddr);
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memset(outbuf, 0, samplesNum * sizeof(s16) * 2);
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for (u32 k = 0; k < channelsNum; k++) {
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u32 inaddr = Memory::Read_U32(inputAddr + k * 4);
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s16 *inbuf = (s16*)Memory::GetPointer(inaddr);
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if (!inbuf)
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continue;
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for (u32 i = 0; i < samplesNum; i++) {
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s16 sample = inbuf[i] >> scaleval;
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outbuf[i*2] += sample;
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outbuf[i*2 + 1] += sample;
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}
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}
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}
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// same as sas core
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return hleDelayResult(0, "p3da core", 240);
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}
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const HLEFunction sceP3da[] =
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{
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{0x374500a5, WrapU_UU<sceP3daBridgeInit>, "sceP3daBridgeInit"},
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{0x43F756a2, WrapU_V<sceP3daBridgeExit>, "sceP3daBridgeExit"},
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{0x013016f3, WrapU_UUUUU<sceP3daBridgeCore>, "sceP3daBridgeCore"},
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};
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void Register_sceP3da()
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{
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RegisterModule("sceP3da", ARRAY_SIZE(sceP3da), sceP3da);
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}
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