Effective but not large
It is not a bottleneck because the operation speed is fast enough.
c_table
[c_table] is quicker to put in the method, but it may be an error category.
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/*************************************************************************************** ** Function name: pushImage ** Description: plot 8 bit image or sprite using a line buffer ***************************************************************************************/ //2019/4/1 T.K KAI void TFT_eSPI::pushImage(int32_t x, int32_t y, uint32_t w, uint32_t h, uint8_t *data, bool bpp8) { uint16_t c_table[] = {0,2816,5376,7936,8193,11009,13569,16129,16386,19202,21762,24322,24579,27395,29955,32515,32772,35588,38148,40708,40965,43781,46341,48901,49158,51974,54534,57094,57351,60167,62727,65287,32,2848,5408,7968,8225,11041,13601,16161,16418,19234,21794,24354,24611,27427,29987,32547,32804,35620,38180,40740,40997,43813,46373,48933,49190,52006,54566,57126,57383,60199,62759,65319,72,2888,5448,8008,8265,11081,13641,16201,16458,19274,21834,24394,24651,27467,30027,32587,32844,35660,38220,40780,41037,43853,46413,48973,49230,52046,54606,57166,57423,60239,62799,65359,104,2920,5480,8040,8297,11113,13673,16233,16490,19306,21866,24426,24683,27499,30059,32619,32876,35692,38252,40812,41069,43885,46445,49005,49262,52078,54638,57198,57455,60271,62831,65391,144,2960,5520,8080,8337,11153,13713,16273,16530,19346,21906,24466,24723,27539,30099,32659,32916,35732,38292,40852,41109,43925,46485,49045,49302,52118,54678,57238,57495,60311,62871,65431,176,2992,5552,8112,8369,11185,13745,16305,16562,19378,21938,24498,24755,27571,30131,32691,32948,35764,38324,40884,41141,43957,46517,49077,49334,52150,54710,57270,57527,60343,62903,65463,216,3032,5592,8152,8409,11225,13785,16345,16602,19418,21978,24538,24795,27611,30171,32731,32988,35804,38364,40924,41181,43997,46557,49117,49374,52190,54750,57310,57567,60383,62943,65503,248,3064,5624,8184,8441,11257,13817,16377,16634,19450,22010,24570,24827,27643,30203,32763,33020,35836,38396,40956,41213,44029,46589,49149,49406,52222,54782,57342,57599,60415,62975,65535}; if ((x >= (int32_t)_width) || (y >= (int32_t)_height)) return; int32_t dx = 0; int32_t dy = 0; int32_t dw = w; int32_t dh = h; if (x < 0) { dw += x; dx = -x; x = 0; } if (y < 0) { dh += y; dy = -y; y = 0; } if ((x + w) > _width ) dw = _width - x; if ((y + h) > _height) dh = _height - y; if (dw < 1 || dh < 1) return; spi_begin(); inTransaction = true; setAddrWindow(x, y, x + dw - 1, y + dh - 1); // Sets CS low and sent RAMWR // Line buffer makes plotting faster uint16_t lineBuf[dw]; if (bpp8) { //uint8_t blue[] = {0, 11, 21, 31}; // blue 2 to 5 bit colour lookup table _lastColor = -1; // Set to illegal value // Used to store last shifted colour //uint8_t msbColor = 0; //uint8_t lsbColor = 0; data += dx + dy * w; while (dh--) { uint32_t len = dw; uint8_t* ptr = data; uint16_t* linePtr = lineBuf; while(len--) { *linePtr++ = c_table[*ptr++]; /* // Shifts are slow so check if colour has changed first if (color != _lastColor) { // =====Green===== ===============Red============== msbColor = (color & 0x1C)>>2 | (color & 0xC0)>>3 | (color & 0xE0); // =====Green===== =======Blue====== lsbColor = (color & 0x1C)<<3 | blue[color & 0x03]; _lastColor = color; } *linePtr++ = msbColor; *linePtr++ = lsbColor;*/ } SPI.writeBytes((uint8_t*)lineBuf,dw<<1); data += w; } } else { while (dh--) { w = (w+7) & 0xFFF8; int32_t len = dw; uint8_t* ptr = data; uint8_t* linePtr = (uint8_t*)lineBuf; uint8_t bits = 8; while(len>0) { if (len < 8) bits = len; uint32_t xp = dx; for (uint16_t i = 0; i < bits; i++) { uint8_t col = (ptr[(xp + dy * w)>>3] << (xp & 0x7)) & 0x80; if (col) {*linePtr++ = bitmap_fg>>8; *linePtr++ = (uint8_t) bitmap_fg;} else {*linePtr++ = bitmap_bg>>8; *linePtr++ = (uint8_t) bitmap_bg;} //if (col) drawPixel((dw-len)+xp,h-dh,bitmap_fg); //else drawPixel((dw-len)+xp,h-dh,bitmap_bg); xp++; } ptr++; len -= 8; } pushColors(lineBuf, dw, false); dy++; } } CS_H; inTransaction = false; spi_end(); } /*************************************************************************************** ** Function name: pushImage ** Description: plot 8 or 1 bit image or sprite with a transparent colour ***************************************************************************************/ //2019/4/1 T.K KAI void TFT_eSPI::pushImage(int32_t x, int32_t y, uint32_t w, uint32_t h, uint8_t *data, uint8_t transp, bool bpp8) { uint16_t c_table[] = {0,11,21,31,288,299,309,319,576,587,597,607,864,875,885,895,1152,1163,1173,1183,1440,1451,1461,1471,1728,1739,1749,1759,2016,2027,2037,2047,8192,8203,8213,8223,8480,8491,8501,8511,8768,8779,8789,8799,9056,9067,9077,9087,9344,9355,9365,9375,9632,9643,9653,9663,9920,9931,9941,9951,10208,10219,10229,10239,18432,18443,18453,18463,18720,18731,18741,18751,19008,19019,19029,19039,19296,19307,19317,19327,19584,19595,19605,19615,19872,19883,19893,19903,20160,20171,20181,20191,20448,20459,20469,20479,26624,26635,26645,26655,26912,26923,26933,26943,27200,27211,27221,27231,27488,27499,27509,27519,27776,27787,27797,27807,28064,28075,28085,28095,28352,28363,28373,28383,28640,28651,28661,28671,36864,36875,36885,36895,37152,37163,37173,37183,37440,37451,37461,37471,37728,37739,37749,37759,38016,38027,38037,38047,38304,38315,38325,38335,38592,38603,38613,38623,38880,38891,38901,38911,45056,45067,45077,45087,45344,45355,45365,45375,45632,45643,45653,45663,45920,45931,45941,45951,46208,46219,46229,46239,46496,46507,46517,46527,46784,46795,46805,46815,47072,47083,47093,47103,55296,55307,55317,55327,55584,55595,55605,55615,55872,55883,55893,55903,56160,56171,56181,56191,56448,56459,56469,56479,56736,56747,56757,56767,57024,57035,57045,57055,57312,57323,57333,57343,63488,63499,63509,63519,63776,63787,63797,63807,64064,64075,64085,64095,64352,64363,64373,64383,64640,64651,64661,64671,64928,64939,64949,64959,65216,65227,65237,65247,65504,65515,65525,65535}; if ((x >= (int32_t)_width) || (y >= (int32_t)_height)) return; int32_t dx = 0; int32_t dy = 0; int32_t dw = w; int32_t dh = h; if (x < 0) { dw += x; dx = -x; x = 0; } if (y < 0) { dh += y; dy = -y; y = 0; } if ((x + w) > _width ) dw = _width - x; if ((y + h) > _height) dh = _height - y; if (dw < 1 || dh < 1) return; spi_begin(); inTransaction = true; int32_t xe = x + dw - 1, ye = y + dh - 1; // Line buffer makes plotting faster uint16_t lineBuf[dw]; if (bpp8) { data += dx + dy * w; //uint8_t blue[] = {0, 11, 21, 31}; // blue 2 to 5 bit colour lookup table _lastColor = -1; // Set to illegal value // Used to store last shifted colour uint8_t msbColor = 0; uint8_t lsbColor = 0; int32_t spx = x, spy = y; while (dh--) { int32_t len = dw; uint8_t* ptr = data; uint16_t* linePtr = lineBuf; int32_t px = x; boolean move = true; uint16_t np = 0; while (len--) { if (transp != *ptr) { if (move) { move = false; setAddrWindow(px, y, xe, ye);} *linePtr++ = c_table[*ptr]; /* // Shifts are slow so check if colour has changed first if (color != _lastColor) { // =====Green===== ===============Red============== msbColor = (color & 0x1C)>>2 | (color & 0xC0)>>3 | (color & 0xE0); // =====Green===== =======Blue====== lsbColor = (color & 0x1C)<<3 | blue[color & 0x03]; _lastColor = color; } *linePtr++ = msbColor; *linePtr++ = lsbColor;*/ np++; } else { move = true; if (np) { SPI.writeBytes((uint8_t*)lineBuf,np<<1); linePtr = lineBuf; np = 0; } } px++; ptr++; } if (np) SPI.writeBytes((uint8_t*)lineBuf,np<<1); y++; data += w; } } else { w = (w+7) & 0xFFF8; while (dh--) { int32_t px = x; boolean move = true; uint16_t np = 0; int32_t len = dw; uint8_t* ptr = data; uint8_t bits = 8; while(len>0) { if (len < 8) bits = len; uint32_t xp = dx; uint32_t yp = (dy * w)>>3; for (uint16_t i = 0; i < bits; i++) { //uint8_t col = (ptr[(xp + dy * w)>>3] << (xp & 0x7)) & 0x80; if ((ptr[(xp>>3) + yp] << (xp & 0x7)) & 0x80) { if (move) { move = false; setAddrWindow(px, y, xe, ye); } np++; } else { if (np) { pushColor(bitmap_fg, np); np = 0; move = true; } } px++; xp++; } ptr++; len -= 8; } if (np) pushColor(bitmap_fg, np); y++; dy++; } } CS_H; inTransaction = false; spi_end(); } |