FipS' Code (Thu Feb 15 22:43:35 2007) - (c) Filip STOKLAS (FipS) - [ www ] [ Guest Book ]
00001 00002 //--------------------------------------------------------------------------- 00003 #include <fs/ras/fsRle8Enc.h> 00004 #include <fs/ras/fsRle8Blt.h> 00005 00006 #include <stdio.h> // printf 00007 #include <memory.h> // memset, memcmp 00008 #include <cassert> 00009 //--------------------------------------------------------------------------- 00011 const fs::ras::nsRle8Blt::PxFmt8888_t * 00012 Conv(const fs::ras::Rle8Enc_t::PxFmt8888_t *pFrom) 00013 { 00014 // put a static assert here to ensure the types are equal in size 00015 return reinterpret_cast<const fs::ras::nsRle8Blt::PxFmt8888_t *>(pFrom); 00016 } 00017 //--------------------------------------------------------------------------- 00018 int main() 00019 { 00020 using namespace fs::ras; 00021 00022 // input RGBA-8888 image data 00023 const Rle8Enc_t::PxFmt8888_t aIn[] = { 00024 {0,0,0,0}, {0,0,255,128}, {0,0,0,0}, 00025 {0,255,0,128}, {255,0,0,255}, {0,255,0,128}, 00026 {0,0,255,128}, {0,0,255,128}, {0,0,0,0}, 00027 }; 00028 00029 // encode RGBA-8888 image data into RLE8 data stream 00030 Rle8Enc_t Rle(aIn, 3, 3); 00031 assert(Rle.IsValid() && "Couldn't encode image data!"); 00032 00033 // get image dimensions 00034 int nW = 0, nH = 0; 00035 Rle.GetSize(nW, nH); 00036 ::printf("image width = %d, image height = %d\n", nW, nH); 00037 00038 // get RLE8 data stream 00039 const unsigned char *pRle = 0; 00040 int nRleNum = 0; 00041 Rle.GetRle(pRle, nRleNum); 00042 ::printf("RLE8 data stream: "); 00043 for(int i = 0; i < nRleNum; ++i) 00044 { 00045 bool bTr = (pRle[i] & 1) == 0; 00046 int nNum = pRle[i] >> 1; 00047 00048 ::printf("%d{%d/%d} ", pRle[i], !bTr, nNum); 00049 00050 if(!bTr) 00051 for(int j = 0; j < nNum; ++i, ++j) 00052 ::printf("%d ", pRle[i + 1]); 00053 00054 } 00055 ::printf("\n"); 00056 00057 // get palette items 00058 const Rle8Enc_t::PxFmt8888_t *pPal = 0; 00059 int nPalNum = 0; 00060 Rle.GetPal(pPal, nPalNum); 00061 ::printf("palette items: "); 00062 for(int i = 0; i < nPalNum; ++i) 00063 { 00064 ::printf("%d-%d-%d-%d ", 00065 pPal[i].r, pPal[i].g, pPal[i].b, pPal[i].a); 00066 } 00067 ::printf("\n"); 00068 00069 // get line offsets 00070 const Rle8Enc_t::uint32 *pOff = 0; 00071 int nOffNum = 0; 00072 Rle.GetOff(pOff, nOffNum); 00073 ::printf("line offsets: "); 00074 for(int i = 0; i < nOffNum; ++i) 00075 ::printf("%d ", pOff[i]); 00076 ::printf("\n---\n"); 00077 00078 // decode RLE8 data stream back to RGBA-8888 image data 00079 nsRle8Blt::PxFmt8888_t aOut[sizeof(aIn)]; 00080 ::memset(aOut, 0, sizeof(aOut)); 00081 00082 Rle8Blt<nsRle8Blt::Cl8888TrCpPcy_t>( 00083 pRle, Conv(pPal), pOff, 00084 3, 3, 00085 3, 3, 00086 aOut, 00087 3, 3, 00088 0, 0 00089 ); 00090 00091 // compare the input with the output 00092 ::printf("aIn %s aOut\n", ::memcmp(aIn, aOut, sizeof(aIn)) == 0 ? 00093 "==" : "!="); 00094 00095 return 0; 00096 } 00097 //--------------------------------------------------------------------------- 00098 // image width = 3, image height = 3 00099 // RLE8 data stream: 2{0/1} 3{1/1} 0 2{0/1} 7{1/3} 1 2 1 5{1/2} 0 0 2{0/1} 00100 // palette items: 0-0-255-128 0-255-0-128 255-0-0-255 00101 // line offsets: 0 4 8 00102 // --- 00103 // aIn == aOut 00104 //---------------------------------------------------------------------------