ppsspp/Core/HLE/sceP3da.cpp
Henrik Rydgård e1a48d74c4 A bit more GetPointer cleanup.
Probably not worth it for performance reasons, but some semantic cleanup
is good, especially the accidental GetPointer -> writable casts without
using GetPointerWrite.

Using Unchecked on already checked pointers, or when we'd crash anyway
if it returned nullptr, is good for clarity.
2023-01-10 12:13:47 +01:00

80 lines
2.6 KiB
C++

// Copyright (c) 2012- PPSSPP Project.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 2.0 or later versions.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License 2.0 for more details.
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
// Official git repository and contact information can be found at
// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
#include "Core/HLE/HLE.h"
#include "Core/HLE/FunctionWrappers.h"
#include "Core/HLE/sceP3da.h"
#include "Core/MemMap.h"
#include "Core/Reporting.h"
static u32 sceP3daBridgeInit(u32 channelsNum, u32 samplesNum)
{
ERROR_LOG_REPORT(SCEAUDIO, "UNIMPL sceP3daBridgeInit(%08x, %08x)", channelsNum, samplesNum);
return 0;
}
static u32 sceP3daBridgeExit()
{
ERROR_LOG_REPORT(SCEAUDIO, "UNIMPL sceP3daBridgeExit()");
return 0;
}
static inline int getScaleValue(u32 channelsNum) {
int val = 0;
while (channelsNum > 1) {
channelsNum >>= 1;
val++;
}
return val;
}
static u32 sceP3daBridgeCore(u32 p3daCoreAddr, u32 channelsNum, u32 samplesNum, u32 inputAddr, u32 outputAddr)
{
DEBUG_LOG(SCEAUDIO, "sceP3daBridgeCore(%08x, %08x, %08x, %08x, %08x)", p3daCoreAddr, channelsNum, samplesNum, inputAddr, outputAddr);
if (Memory::IsValidAddress(inputAddr) && Memory::IsValidAddress(outputAddr)) {
int scaleval = getScaleValue(channelsNum);
s16_le *outbuf = (s16_le *)Memory::GetPointerWriteUnchecked(outputAddr);
memset(outbuf, 0, samplesNum * sizeof(s16) * 2);
for (u32 k = 0; k < channelsNum; k++) {
u32 inaddr = Memory::Read_U32(inputAddr + k * 4);
const s16 *inbuf = (const s16 *)Memory::GetPointerUnchecked(inaddr);
if (!inbuf)
continue;
for (u32 i = 0; i < samplesNum; i++) {
s16 sample = inbuf[i] >> scaleval;
outbuf[i*2] += sample;
outbuf[i*2 + 1] += sample;
}
}
}
// same as sas core
return hleDelayResult(0, "p3da core", 240);
}
const HLEFunction sceP3da[] =
{
{0X374500A5, &WrapU_UU<sceP3daBridgeInit>, "sceP3daBridgeInit", 'x', "xx" },
{0X43F756A2, &WrapU_V<sceP3daBridgeExit>, "sceP3daBridgeExit", 'x', "" },
{0X013016F3, &WrapU_UUUUU<sceP3daBridgeCore>, "sceP3daBridgeCore", 'x', "xxxxx"},
};
void Register_sceP3da()
{
RegisterModule("sceP3da", ARRAY_SIZE(sceP3da), sceP3da);
}