void OptionBase::toString(RSString & result) const
{
C_ostrstream tempstream;
(void) writevalue(tempstream);
tempstream << ends;
#ifdef USE_NEWSTRSTREAM
const string str = tempstream.str();
// no freeze / delete needed since ostringstream::str returns a string and not char*
result = str.data();
#else
result = tempstream.str();
tempstream.rdbuf()->freeze(0);
#endif
}
static int letter (lua_State *L)
{
int x,y;
if(!NetB){
x = lua_toint(L, 1)-1;
y = lua_toint(L, 2)-1;
switch(lua_type(L,3)){
case LUA_TSTRING:
writeg(x,y,(char*)lua_tostring ( L , 3 ) ) ;
break;
case LUA_TNUMBER:
writevalue(x,y,(long)(lua_tonumber(L, 3)));
break;
default: break;
}
return 0;
}
}
// Convert Planar YUV 4:2:2 To 16-Bit DCT Quantization Block File (Y Channel)
static void convert_dct_Y(FILE *source_file, FILE *target_file, long ofs, long ofs_end) {
unsigned int i = 0;
unsigned int u = 0;
unsigned int v = 0;
unsigned int x = 0;
unsigned int y = 0;
// Fill JPEG Standard Quantization 8x8 Matrix Set By Quality Level
for(i=0; i < 64; i++) {
if(quality > 50) q[i] = q50[i] * (100-quality)/50;
if(quality < 50) q[i] = q50[i] * 50/quality;
if(quality == 50) q[i] = q50[i];
if(q[i] > 255) q[i] = 255;
if(q[i] < 1) q[i] = 1;
}
// Fill COS Look Up Table
for(u=0; u < 8; u++) {
for(x=0; x < 8; x++) coslut[u*8 + x] = cos((2*x + 1) * u * M_PI / 16);
}
// Loop Blocks
ofs = 0;
long wofs = 0;
unsigned int block_row = 0; // Block Row Counter
while(wofs < (width * height * 4) - 2048) {
// Load Image Block (Y Channel)
for(y=0; y < 8; y++) {
for(x=0; x < 8; x++) {
fseek(source_file, ofs, SEEK_SET);
SourceCHR = readvalue(source_file);
image[y*8 + x] = SourceCHR;
ofs ++;
}
ofs += (width - 8); // Next Scanline In Block
}
block_row++;
if(block_row == (width / 8)) {
block_row = 0; // Next Block Row
ofs -= (width - 8);
}
else ofs -= ((width * 8) - 8) ; // Next Block Column
// Clear DCT Block
for(i=0; i < 64; i++) dct[i] = 0.0;
// Write DCT Block
for(u=0; u < 8; u++) {
for(v=0; v < 8; v++) {
for(x=0; x < 8; x++) {
for(y=0; y < 8; y++) {
dct[v*8 + u] += (
image[y*8 + x]
* clut[u]
* clut[v]
* coslut[u*8 + x] // cos((2*x + 1) * u * pi / 16)
* coslut[v*8 + y] // cos((2*y + 1) * v * pi / 16)
);
}
}
}
}
// Write DCTQ Block (Quantization)
for(i=0; i < 64; i++) dctq[i] = dct[i] / q[i];
// Write Zig-Zag DCTQ Block
dctqz[0] = dctq[0];
dctqz[1] = dctq[1];
dctqz[2] = dctq[8];
dctqz[3] = dctq[16];
dctqz[4] = dctq[9];
dctqz[5] = dctq[2];
dctqz[6] = dctq[3];
dctqz[7] = dctq[10];
dctqz[8] = dctq[17];
dctqz[9] = dctq[24];
dctqz[10] = dctq[32];
dctqz[11] = dctq[25];
dctqz[12] = dctq[18];
dctqz[13] = dctq[11];
dctqz[14] = dctq[4];
dctqz[15] = dctq[5];
dctqz[16] = dctq[12];
dctqz[17] = dctq[19];
dctqz[18] = dctq[26];
dctqz[19] = dctq[33];
dctqz[20] = dctq[40];
dctqz[21] = dctq[48];
dctqz[22] = dctq[41];
dctqz[23] = dctq[34];
dctqz[24] = dctq[27];
dctqz[25] = dctq[20];
dctqz[26] = dctq[13];
dctqz[27] = dctq[6];
dctqz[28] = dctq[7];
dctqz[29] = dctq[14];
dctqz[30] = dctq[21];
dctqz[31] = dctq[28];
dctqz[32] = dctq[35];
dctqz[33] = dctq[42];
dctqz[34] = dctq[49];
dctqz[35] = dctq[56];
dctqz[36] = dctq[57];
dctqz[37] = dctq[50];
dctqz[38] = dctq[43];
dctqz[39] = dctq[36];
dctqz[40] = dctq[29];
dctqz[41] = dctq[22];
dctqz[42] = dctq[15];
dctqz[43] = dctq[23];
dctqz[44] = dctq[30];
dctqz[45] = dctq[37];
dctqz[46] = dctq[44];
dctqz[47] = dctq[51];
dctqz[48] = dctq[58];
dctqz[49] = dctq[59];
dctqz[50] = dctq[52];
dctqz[51] = dctq[45];
dctqz[52] = dctq[38];
dctqz[53] = dctq[31];
dctqz[54] = dctq[39];
dctqz[55] = dctq[46];
dctqz[56] = dctq[53];
dctqz[57] = dctq[60];
dctqz[58] = dctq[61];
dctqz[59] = dctq[54];
dctqz[60] = dctq[47];
dctqz[61] = dctq[55];
dctqz[62] = dctq[62];
dctqz[63] = dctq[63];
// Write DCTQZ To Output File
for(i=0; i < 64; i++) {
SourceCHR = dctqz[i] >> 8;
fseek(target_file, wofs, SEEK_SET);
writevalue(SourceCHR, target_file);
wofs++;
SourceCHR = dctqz[i] & 0xFF;
fseek(target_file, wofs, SEEK_SET);
writevalue(SourceCHR, target_file);
wofs++;
}
if((wofs & 0x7FF) == 0) wofs += 2048;
}
}
// Convert 32-Bit/24-Bit BMP To 8-Bit DCT Quantization Block File
static void convert_dct(FILE *source_file, FILE *target_file, long ofs, long ofs_end) {
ofs = 0x12;
fseek(source_file, ofs, SEEK_SET);
width = readvalue(source_file);
width += (readvalue(source_file))<<8;
width += (readvalue(source_file))<<16;
width += (readvalue(source_file))<<24;
height = readvalue(source_file);
height += (readvalue(source_file))<<8;
height += (readvalue(source_file))<<16;
height += (readvalue(source_file))<<24;
ofs = 0x1C;
fseek(source_file, ofs, SEEK_SET);
depth = readvalue(source_file);
depth += (readvalue(source_file))<<8;
unsigned int i = 0;
unsigned int u = 0;
unsigned int v = 0;
unsigned int x = 0;
unsigned int y = 0;
// Fill JPEG Standard Quantization 8x8 Matrix Set By Quality Level
for(i=0; i < 64; i++) {
if(quality > 50) q[i] = q50[i] * (100-quality)/50;
if(quality < 50) q[i] = q50[i] * 50/quality;
if(quality == 50) q[i] = q50[i];
if(q[i] > 255) q[i] = 255;
if(q[i] < 1) q[i] = 1;
}
// Fill COS Look Up Table
for(u=0; u < 8; u++) {
for(x=0; x < 8; x++) coslut[u*8 + x] = cos((2*x + 1) * u * M_PI / 16);
}
// Loop Blocks
ofs = ofs_end - ((depth / 8) * width);
long wofs = 0;
unsigned int block_row = 0; // Block Row Counter
while(wofs < width * height) {
// Load Image Block (Red Channel)
for(y=0; y < 8; y++) {
for(x=0; x < 8; x++) {
fseek(source_file, ofs, SEEK_SET);
SourceCHR = readvalue(source_file);
image[y*8 + x] = SourceCHR;
ofs += (depth / 8);
}
ofs -= ((depth / 8) * width) + ((depth / 8) * 8); // Next Scanline In Block
}
block_row++;
if(block_row == (width / 8)) {
block_row = 0; // Next Column Block
ofs += (depth / 8) * 8;
ofs -= ((depth / 8) * width);
}
else ofs += ((depth / 8) * (width * 8)) + ((depth / 8) * 8); // Next Block Row
// Clear DCT Block
for(i=0; i < 64; i++) dct[i] = 0.0;
// Write DCT Block
for(u=0; u < 8; u++) {
for(v=0; v < 8; v++) {
for(x=0; x < 8; x++) {
for(y=0; y < 8; y++) {
dct[v*8 + u] += (
image[y*8 + x]
* clut[u]
* clut[v]
* coslut[u*8 + x] // cos((2*x + 1) * u * pi / 16)
* coslut[v*8 + y] // cos((2*y + 1) * v * pi / 16)
);
}
}
}
}
// Write DCTQ Block (Quantization)
for(i=0; i < 64; i++) dctq[i] = dct[i] / q[i];
// Write DCTQ To Output File
for(i=0; i < 64; i++) {
SourceCHR = dctq[i];
fseek(target_file, wofs, SEEK_SET);
writevalue(SourceCHR, target_file);
wofs++;
}
}
}