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Minecraft.Client/PS3/SPU_Tasks/RLECompress/RLECompress.cpp

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+/* SCE CONFIDENTIAL
+PlayStation(R)3 Programmer Tool Runtime Library 430.001
+* Copyright (C) 2007 Sony Computer Entertainment Inc.
+* All Rights Reserved.
+*/
+
+/* common headers */
+#include <stdint.h>
+#include <stdlib.h>
+#include <alloca.h>
+#include <spu_intrinsics.h>
+#include <cell/spurs.h>
+#include <spu_printf.h>
+#include <cell/dma.h>
+#include <cell/spurs/job_queue.h>
+
+#include "..\Common\DmaData.h"
+#include <vectormath/c/vectormath_aos_v.h>
+
+
+static const bool sc_verbose = false;
+CellSpursJobContext2* g_pSpursJobContext;
+
+
+class PPULoadArray
+{
+	static const int sc_cacheSize = 16384;
+	unsigned char m_localCache[sc_cacheSize];
+	unsigned char* m_pDataPPU;
+	int m_cachePos;
+	int m_cacheFilled;
+	int m_ppuPos;
+	int m_dataSize;
+
+public:
+	PPULoadArray(uintptr_t pDataPPU, int dataSize) 
+	{ 
+		m_pDataPPU = (unsigned char*)pDataPPU; 
+		m_cachePos = 0;
+		m_ppuPos = 0; 
+		m_dataSize = dataSize;
+		fillCache();
+	}
+
+	unsigned char getCurrent()
+	{
+		unsigned char val = m_localCache[m_cachePos];
+		return val;
+	}
+	unsigned char getNext()
+	{
+		m_cachePos++;
+		if(m_cachePos >= sc_cacheSize)
+			loadMore();
+		unsigned char val = m_localCache[m_cachePos];
+		return val;
+	}
+
+	int getPos() { return m_ppuPos + m_cachePos; }
+
+	void loadMore()
+	{
+		m_ppuPos += sc_cacheSize;
+		fillCache();
+	}
+	void fillCache()
+	{
+		// dma data from PPU
+		// 			spu_printf("DMAing %d bytes from 0x%08x(SPU) to 0x%08x(PPU)\n",(int)( m_cachePos*sizeof(int)), (int)m_localCache, (int)&m_pDataPPU[m_ppuPos]);
+		int dmaSize = (m_dataSize - m_ppuPos);
+		if(dmaSize > sc_cacheSize)
+			dmaSize = sc_cacheSize;
+		dmaSize = DmaData_SPU::roundUpDMASize(dmaSize);
+		DmaData_SPU::getAndWait(m_localCache, (uintptr_t)&m_pDataPPU[m_ppuPos], dmaSize);
+		m_cachePos = 0;
+	}
+};
+
+class PPUStoreArray
+{
+	static const int sc_cacheSize = 16384;
+	unsigned char m_localCache[sc_cacheSize];
+	unsigned char* m_pDataPPU;
+	int m_cachePos;
+	int m_ppuPos;
+
+public:
+	PPUStoreArray(uintptr_t pDataPPU) { m_pDataPPU = (unsigned char*)pDataPPU; m_cachePos = 0; m_ppuPos = 0;}
+
+	void store(unsigned char val)
+	{
+		m_localCache[m_cachePos] = val;
+		m_cachePos++;
+		if(m_cachePos >= sc_cacheSize)
+			flush();
+	}
+
+	void flush()
+	{
+		if(m_cachePos > 0)
+		{
+			// dma the local cache back to PPU and start again
+			// 			spu_printf("DMAing %d bytes from 0x%08x(SPU) to 0x%08x(PPU)\n",(int)( m_cachePos*sizeof(int)), (int)m_localCache, (int)&m_pDataPPU[m_ppuPos]);
+			DmaData_SPU::putAndWait(m_localCache, (uintptr_t)&m_pDataPPU[m_ppuPos], DmaData_SPU::roundUpDMASize(m_cachePos));
+// 			if(m_ppuPos == 0)
+// 				spu_printf("first 4 - %d %d %d %d\n", m_localCache[0], m_localCache[1], m_localCache[2], m_localCache[3]);
+			m_ppuPos += m_cachePos;
+			m_cachePos = 0;
+		}
+	}
+	int getSize() { return m_ppuPos; }
+};
+
+
+void RLECompress(void *pPPUSrc, int srcSize, void* pPPUDst, int* pDstSize)
+{
+
+	PPULoadArray srcBuffer((uintptr_t)pPPUSrc, srcSize);
+// 	PPUStoreArray dstBuffer((uintptr_t)pPPUDst);
+
+	unsigned char dstBuffer[1024*100];
+	int dstPos = 0;
+	int endPos = srcSize-1;
+
+	// Compress with RLE first:
+	// 0 - 254 - encodes a single byte
+	// 255 followed by 0, 1, 2 - encodes a 1, 2, or 3 255s
+	// 255 followed by 3-255, followed by a byte - encodes a run of n + 1 bytes
+	do
+	{
+		unsigned char thisOne = srcBuffer.getCurrent();
+
+		unsigned int count = 1;
+		while( ( srcBuffer.getPos() != endPos ) && ( srcBuffer.getNext() == thisOne ) && ( count < 256 ) )
+		{
+			count++;
+		}
+
+		if( count <= 3 )
+		{
+			if( thisOne == 255 )
+			{
+				dstBuffer[dstPos++] = 255;
+				dstBuffer[dstPos++] =  count - 1;
+			}
+			else
+			{
+				for( unsigned int i = 0; i < count ; i++ )
+				{
+					dstBuffer[dstPos++] = thisOne;
+				}
+			}
+		}
+		else
+		{
+			dstBuffer[dstPos++] = 255;
+			dstBuffer[dstPos++] = count - 1;
+			dstBuffer[dstPos++] = thisOne;
+		}
+	} while (srcBuffer.getPos() != endPos);
+	DmaData_SPU::wait();
+
+	DmaData_SPU::putValue32(dstPos, (uintptr_t)pDstSize);
+	int dstDmaSize = DmaData_SPU::roundUpDMASize(dstPos);
+	DmaData_SPU::putAndWait(dstBuffer, (uintptr_t)pPPUDst, dstDmaSize);
+
+}
+
+
+
+
+void cellSpursJobQueueMain(CellSpursJobContext2 *pContext, CellSpursJob256 *pJob)
+{
+	// 	CellSpursTaskId idTask = cellSpursGetTaskId();
+	unsigned int idSpu = cellSpursGetCurrentSpuId();
+
+	if(sc_verbose)
+		spu_printf("PerlinNoiseJob [SPU#%u] start\n", idSpu);
+
+	g_pSpursJobContext = pContext;
+	void* pPPUSrc = (void*)pJob->workArea.userData[0];		
+	int srcSize = (int)pJob->workArea.userData[1];		
+	void* pPPUDst = (void*)pJob->workArea.userData[2];		
+	int* pDstSize = (int*)pJob->workArea.userData[3];		
+// 
+// 	spu_printf("pPPUSrc : 0x%08x\n", pPPUSrc);
+// 	spu_printf("srcSize : %d\n", srcSize);
+// 	spu_printf("pPPUDst : 0x%08x\n", pPPUDst);
+// 	spu_printf("pDstSize : 0x%08x\n", pDstSize);
+
+	RLECompress(pPPUSrc, srcSize, pPPUDst, pDstSize);
+
+
+	if(sc_verbose)
+		spu_printf("PerlinNoiseJob [SPU#%u] exit\n", idSpu);
+}
+

Minecraft.Client/PS3/SPU_Tasks/RLECompress/RLECompress.h

@@ -0,0 +1,5 @@
+#pragma once
+#include <vectormath\cpp\vectormath_aos.h>
+
+
+