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packeduPD3301adpter.cpp
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packeduPD3301adpter.cpp
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/*
Created by tan (trinity09181718@gmail.com)
Copyright (c) 2022 tan
All rights reserved.
This program is based on FabGL/src/emudevs/graphicsadapter.cpp
char attr : packed uPD3301 ≒ CGA
b76543210
|||||||+--- B
||||||+---- R
|||||+----- G
||||+------ upper line
|||+------- simple Graphics
||+-------- reverse
|+--------- erase(secret)
+---------- under line
* Please contact trinity09181718@gmail.com if you need a commercial license.
* This software is available under GPL v3.
* This library and related software is available under GPL v3.
FabGL 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, either version 3 of the License, or
(at your option) any later version.
FabGL 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 for more details.
You should have received a copy of the GNU General Public License
along with FabGL. If not, see <http://www.gnu.org/licenses/>.
*/
#include "packeduPD3301adpter.h"
#pragma GCC optimize ("O2")
static const RGB222 CGAPalette[8] = {
RGB222( 0, 0, 0 ), // black
RGB222( 0, 0, 3 ), // blue
RGB222( 0, 3, 0 ), // green
RGB222( 0, 3, 3 ), // cyan
RGB222( 3, 0, 0 ), // red
RGB222( 3, 0, 3 ), // magenta
RGB222( 3, 3, 0 ), // yellow
RGB222( 3, 3, 3 ), // white
};
void packeduPD3301adpter::setupEmulation( Emulation emulation )
{
static const struct {
bool text;
uint8_t cursorStart; // valid when text = true
uint8_t cursorEnd; // valid when text = true
uint8_t scanlinesPerCallback;
DrawScanlineCallback scanlineCallback;
char const * modeline;
int16_t viewportWidth;
int16_t viewportHeight;
int16_t addFontWidth;
int16_t addFontHeight;
} emulationInfo[] = {
// Emulation::PC_Text_40x20_8Colors (Packed uPD3301 ≒ CGA, Text Mode, 40x20x8)
{ true, 0, 7, 2, drawScanline_PC_Text_40x20_8Colors, VGA_640x200_60HzD, 640, 200, 8, 2 },
// Emulation::PC_Text_40x25_8Colors (Packed uPD3301 ≒ CGA, Text Mode, 40x25x8)
{ true, 0, 7, 4, drawScanline_PC_Text_40x25_8Colors, VGA_640x200_60HzD, 640, 200, 8, 0 },
// Emulation::PC_Text_80x20_8Colors (Packed uPD3301 ≒ CGA, Text Mode, 80x20x8)
{ true, 0, 7, 2, drawScanline_PC_Text_80x20_8Colors, VGA_640x200_60HzD, 640, 200, 0, 2 },
// Emulation::PC_Text_80x25_8Colors (Packed uPD3301 ≒ CGA, Text Mode, 80x25x8)
{ true, 0, 7, 4, drawScanline_PC_Text_80x25_8Colors, VGA_640x200_60HzD, 640, 200, 0, 0 },
};
if ( emulation != Emulation::None )
{
auto info = emulationInfo + (int)emulation - 1;
m_VGADCtrl.setDrawScanlineCallback( info->scanlineCallback, this );
m_VGADCtrl.setScanlinesPerCallBack( info->scanlinesPerCallback );
m_VGADCtrl.setResolution( info->modeline, info->viewportWidth, info->viewportHeight );
if ( info->text )
{
setCursorShape( info->cursorStart, info->cursorEnd );
m_columns = m_VGADCtrl.getViewPortWidth() / ( m_font.width + info->addFontWidth );
m_rows = m_VGADCtrl.getViewPortHeight() / ( m_font.height + info->addFontHeight );
}
}
}
packeduPD3301adpter::packeduPD3301adpter()
: m_VGADCtrl( false ),
m_emulation( Emulation::None ),
m_videoBuffer( nullptr) ,
m_rawLUT( nullptr ),
m_cursorRow( 0 ),
m_cursorCol( 0 ),
m_cursorStart( 0 ),
m_cursorEnd( 0 ),
m_cursorVisible( false ),
m_cursorGlyph( nullptr ),
m_enablePCG( false) ,
m_videoEnabled( true )
{
m_font.data = nullptr;
m_fontGraph.data = nullptr;
m_fontPCG.data = nullptr;
m_VGADCtrl.begin();
}
packeduPD3301adpter::~packeduPD3301adpter()
{
enableVideo( false );
cleanupFont();
freeLUT();
if ( m_cursorGlyph )
heap_caps_free( m_cursorGlyph );
m_cursorGlyph = nullptr;
}
bool packeduPD3301adpter::enableVideo( bool value )
{
if ( value == m_videoEnabled )
return m_videoEnabled;
m_videoEnabled = value;
if ( m_videoEnabled )
{
setupEmulation( m_emulation );
m_VGADCtrl.run();
}
else
m_VGADCtrl.end();
return !m_videoEnabled;
}
void packeduPD3301adpter::setEmulation( Emulation emulation )
{
if ( m_emulation != emulation )
{
bool videoWasEnabled = enableVideo( false );
freeLUT();
m_emulation = emulation;
if ( m_emulation != Emulation::None )
{
setupEmulation( emulation );
setupLUT();
enableVideo( videoWasEnabled );
}
}
}
void packeduPD3301adpter::freeLUT()
{
if ( m_rawLUT )
heap_caps_free( m_rawLUT );
m_rawLUT = nullptr;
}
void packeduPD3301adpter::setupLUT()
{
switch ( m_emulation )
{
case Emulation::None:
break;
case Emulation::PC_Text_40x20_8Colors:
case Emulation::PC_Text_40x25_8Colors:
case Emulation::PC_Text_80x20_8Colors:
case Emulation::PC_Text_80x25_8Colors:
// each LUT item contains half pixel (an index to 8 colors palette)
if ( !m_rawLUT )
m_rawLUT = (uint8_t *)heap_caps_malloc( 8, MALLOC_CAP_8BIT | MALLOC_CAP_INTERNAL );
for ( int i = 0; i < 8; ++i )
m_rawLUT[i] = m_VGADCtrl.createRawPixel( CGAPalette[i] );
break;
}
}
void packeduPD3301adpter::setVideoBuffer( void const * videoBuffer )
{
m_videoBuffer = (uint8_t *)videoBuffer;
}
void packeduPD3301adpter::cleanupFont()
{
if ( m_font.data )
heap_caps_free( (void *)m_font.data );
if ( m_fontGraph.data )
heap_caps_free( (void *)m_fontGraph.data );
if ( m_fontPCG.data )
heap_caps_free( (void *)m_fontPCG.data );
m_font.data = nullptr;
m_fontGraph.data = nullptr;
m_fontPCG.data = nullptr;
}
void packeduPD3301adpter::setFont( FontInfo const * font, FontInfo const * fontGraph, FontInfo const * fontPCG )
{
cleanupFont();
if ( font )
{
m_font = *font;
// copy font data into internal RAM
auto size = 256 * ( ( m_font.width + 7) / 8 ) * m_font.height;
m_font.data = (uint8_t const *)heap_caps_malloc( size, MALLOC_CAP_8BIT | MALLOC_CAP_INTERNAL );
memcpy( (void *)m_font.data, font->data, size );
}
if ( fontGraph )
{
m_fontGraph = *fontGraph;
// copy font data into internal RAM
auto size = 256 * ( ( m_fontGraph.width + 7) / 8 ) * m_fontGraph.height;
m_fontGraph.data = (uint8_t const *)heap_caps_malloc( size, MALLOC_CAP_8BIT | MALLOC_CAP_INTERNAL );
memcpy( (void *)m_fontGraph.data, fontGraph->data, size );
}
if ( fontPCG )
{
m_fontPCG = *fontPCG;
// copy font data into internal RAM
auto size = 256 * ( ( m_fontPCG.width + 7) / 8 ) * m_fontPCG.height;
m_fontPCG.data = (uint8_t const *)heap_caps_malloc( size, MALLOC_CAP_8BIT | MALLOC_CAP_INTERNAL );
memcpy( (void *)m_fontPCG.data, fontPCG->data, size );
}
}
void packeduPD3301adpter::updatePCGFont( FontInfo const * fontPCG )
{
if ( fontPCG )
{
auto size = 256 * ( ( m_fontPCG.width + 7) / 8 ) * m_fontPCG.height;
memcpy( (void *)m_fontPCG.data, fontPCG->data, size );
}
}
void packeduPD3301adpter::setCursorShape( int start, int end )
{
if ( start != m_cursorStart || end != m_cursorEnd )
{
m_cursorStart = start;
m_cursorEnd = end;
// readapt start->end to the actual font height to make sure the cursor is always visible
if ( start <= end && end >= m_font.height )
{
int h = end - start;
end = m_font.height - 1;
start = end - h;
}
int charWidthInBytes = ( m_font.width + 7 ) / 8;
if ( !m_cursorGlyph )
m_cursorGlyph = (uint8_t *)heap_caps_malloc( charWidthInBytes * m_font.height, MALLOC_CAP_8BIT | MALLOC_CAP_INTERNAL );
memset( m_cursorGlyph, 0, charWidthInBytes * m_font.height );
if ( end >= start && start >= 0 && start < m_font.height && end < m_font.height )
memset( m_cursorGlyph + ( start * charWidthInBytes ), 0xFF, ( end - start + 1 ) * charWidthInBytes );
}
}
void packeduPD3301adpter::setCursorPos( int row, int column )
{
m_cursorRow = row;
m_cursorCol = column;
}
void IRAM_ATTR packeduPD3301adpter::drawScanline_PC_Text_40x20_8Colors( void * arg, uint8_t * dest, int scanLine )
{
auto ga = (packeduPD3301adpter *)arg;
constexpr int CHARWIDTH = 8;
constexpr int CHARHEIGHT = 8;
constexpr int CHARWIDTHINBYTES = (CHARWIDTH + 7) / 8;
constexpr int CHARSIZEINBYTES = CHARWIDTHINBYTES * CHARHEIGHT;
constexpr int COLUMNS = 40;
constexpr int SCREENWIDTH = 640;
constexpr int LINES = 4;
if ( scanLine == 0 )
++ga->m_frameCounter;
int charScanline = scanLine % ( CHARHEIGHT + 2 );
int textRow = scanLine / ( CHARHEIGHT + 2 );
if ( charScanline != 0 )
charScanline--;
uint8_t const * fontData = ga->m_font.data + ( charScanline * CHARWIDTHINBYTES );
uint8_t const * fontDataGraph = ga->m_fontGraph.data + ( charScanline * CHARWIDTHINBYTES );
uint8_t const * fontDataPCG = ga->m_fontPCG.data + ( charScanline * CHARWIDTHINBYTES );
uint8_t * rawLUT = ga->m_rawLUT;
uint8_t const * curItem = ga->m_videoBuffer + ( textRow * COLUMNS * 2 );
bool showCursor = ga->m_cursorVisible && ga->m_cursorRow == textRow && ( ( ga->m_frameCounter & 0x1F ) < 0x0F );
int cursorCol = ga->m_cursorCol;
for ( int textCol = 0; textCol < COLUMNS; ++textCol )
{
int charIdx = *curItem++;
int charAttr = *curItem++;
bool upperLine = charAttr & 0x08;
bool graphFont = charAttr & 0x10;
bool reverse = charAttr & 0x20;
bool erase = charAttr & 0x40;
bool underLine = charAttr & 0x80;
uint8_t color = charAttr & 0x07;
uint8_t bg = reverse ? rawLUT[ color ] : rawLUT[0];
uint8_t fg = reverse ? ( erase ? rawLUT[ color ] : rawLUT[0] ) : ( erase ? rawLUT[0] : rawLUT[ color ] );
const uint8_t colors[2] = { bg, fg };
uint8_t const * charBitmapPtr = graphFont
? fontDataGraph + charIdx * CHARSIZEINBYTES
: ( ga->m_enablePCG && charIdx >= 0x80 && charIdx <= 0xFF )
? fontDataPCG + charIdx * CHARSIZEINBYTES
: fontData + charIdx * CHARSIZEINBYTES;
auto destptr = dest;
if ( showCursor && textCol == cursorCol )
{
uint8_t const * cursorBitmapPtr = ga->m_cursorGlyph + ( charScanline * CHARWIDTHINBYTES );
for ( int charRow = 0; charRow < LINES / 2; ++charRow )
{
uint32_t charBitmap = *charBitmapPtr;
uint32_t cusrsorBitmap = *cursorBitmapPtr;
if ( charScanline == 0 && charRow == 0 )
{
cusrsorBitmap = 0x00;
if ( upperLine )
charBitmap = 0xFF;
else
charBitmap = 0x00;
}
if ( charScanline == 7 && charRow == ( LINES / 2 ) - 1 )
{
cusrsorBitmap = 0x00;
if ( underLine )
charBitmap = 0xFF;
else
charBitmap = 0x00;
}
charBitmap ^= cusrsorBitmap;
*(destptr + 0) = colors[(bool)(charBitmap & 0x40)];
*(destptr + 1) = colors[(bool)(charBitmap & 0x40)];
*(destptr + 2) = colors[(bool)(charBitmap & 0x80)];
*(destptr + 3) = colors[(bool)(charBitmap & 0x80)];
*(destptr + 4) = colors[(bool)(charBitmap & 0x10)];
*(destptr + 5) = colors[(bool)(charBitmap & 0x10)];
*(destptr + 6) = colors[(bool)(charBitmap & 0x20)];
*(destptr + 7) = colors[(bool)(charBitmap & 0x20)];
*(destptr + 8) = colors[(bool)(charBitmap & 0x04)];
*(destptr + 9) = colors[(bool)(charBitmap & 0x04)];
*(destptr +10) = colors[(bool)(charBitmap & 0x08)];
*(destptr +11) = colors[(bool)(charBitmap & 0x08)];
*(destptr +12) = colors[(bool)(charBitmap & 0x01)];
*(destptr +13) = colors[(bool)(charBitmap & 0x01)];
*(destptr +14) = colors[(bool)(charBitmap & 0x02)];
*(destptr +15) = colors[(bool)(charBitmap & 0x02)];
destptr += SCREENWIDTH;
if ( charScanline == 0 && charRow == 0 )
;
else
{
charBitmapPtr += CHARWIDTHINBYTES;
cursorBitmapPtr += CHARWIDTHINBYTES;
}
}
}
else
{
for ( int charRow = 0; charRow < LINES / 2; ++charRow )
{
uint32_t charBitmap = *charBitmapPtr;
if ( charScanline == 0 && charRow == 0 )
{
if ( upperLine )
charBitmap = 0xFF;
else
charBitmap = 0x00;
}
if ( charScanline == 7 && charRow == ( LINES / 2 ) - 1 )
{
if ( underLine )
charBitmap = 0xFF;
else
charBitmap = 0x00;
}
*(destptr + 0) = colors[(bool)(charBitmap & 0x40)];
*(destptr + 1) = colors[(bool)(charBitmap & 0x40)];
*(destptr + 2) = colors[(bool)(charBitmap & 0x80)];
*(destptr + 3) = colors[(bool)(charBitmap & 0x80)];
*(destptr + 4) = colors[(bool)(charBitmap & 0x10)];
*(destptr + 5) = colors[(bool)(charBitmap & 0x10)];
*(destptr + 6) = colors[(bool)(charBitmap & 0x20)];
*(destptr + 7) = colors[(bool)(charBitmap & 0x20)];
*(destptr + 8) = colors[(bool)(charBitmap & 0x04)];
*(destptr + 9) = colors[(bool)(charBitmap & 0x04)];
*(destptr +10) = colors[(bool)(charBitmap & 0x08)];
*(destptr +11) = colors[(bool)(charBitmap & 0x08)];
*(destptr +12) = colors[(bool)(charBitmap & 0x01)];
*(destptr +13) = colors[(bool)(charBitmap & 0x01)];
*(destptr +14) = colors[(bool)(charBitmap & 0x02)];
*(destptr +15) = colors[(bool)(charBitmap & 0x02)];
destptr += SCREENWIDTH;
if ( charScanline == 0 && charRow == 0 )
;
else
charBitmapPtr += CHARWIDTHINBYTES;
}
}
dest += 16;
}
}
void IRAM_ATTR packeduPD3301adpter::drawScanline_PC_Text_40x25_8Colors( void * arg, uint8_t * dest, int scanLine )
{
auto ga = (packeduPD3301adpter *)arg;
constexpr int CHARWIDTH = 8;
constexpr int CHARHEIGHT = 8;
constexpr int CHARWIDTHINBYTES = (CHARWIDTH + 7) / 8;
constexpr int CHARSIZEINBYTES = CHARWIDTHINBYTES * CHARHEIGHT;
constexpr int COLUMNS = 40;
constexpr int SCREENWIDTH = 640;
constexpr int LINES = 8;
if ( scanLine == 0 )
++ga->m_frameCounter;
int charScanline = scanLine & ( CHARHEIGHT - 1 );
int textRow = scanLine / CHARHEIGHT;
uint8_t const * fontData = ga->m_font.data + ( charScanline * CHARWIDTHINBYTES );
uint8_t const * fontDataGraph = ga->m_fontGraph.data + ( charScanline * CHARWIDTHINBYTES );
uint8_t const * fontDataPCG = ga->m_fontPCG.data + ( charScanline * CHARWIDTHINBYTES );
uint8_t * rawLUT = ga->m_rawLUT;
uint8_t const * curItem = ga->m_videoBuffer + ( textRow * COLUMNS * 2 );
bool showCursor = ga->m_cursorVisible && ga->m_cursorRow == textRow && ( ( ga->m_frameCounter & 0x1F ) < 0x0F );
int cursorCol = ga->m_cursorCol;
for ( int textCol = 0; textCol < COLUMNS; ++textCol )
{
int charIdx = *curItem++;
int charAttr = *curItem++;
bool upperLine = charAttr & 0x08;
bool graphFont = charAttr & 0x10;
bool reverse = charAttr & 0x20;
bool erase = charAttr & 0x40;
bool underLine = charAttr & 0x80;
uint8_t color = charAttr & 0x07;
uint8_t bg = reverse ? rawLUT[ color ] : rawLUT[0];
uint8_t fg = reverse ? ( erase ? rawLUT[ color ] : rawLUT[0] ) : ( erase ? rawLUT[0] : rawLUT[ color ] );
const uint8_t colors[2] = { bg, fg };
uint8_t const * charBitmapPtr = graphFont
? fontDataGraph + charIdx * CHARSIZEINBYTES
: ( ga->m_enablePCG && charIdx >= 0x80 && charIdx <= 0xFF )
? fontDataPCG + charIdx * CHARSIZEINBYTES
: fontData + charIdx * CHARSIZEINBYTES;
auto destptr = dest;
if ( showCursor && textCol == cursorCol )
{
uint8_t const * cursorBitmapPtr = ga->m_cursorGlyph + ( charScanline * CHARWIDTHINBYTES );
for ( int charRow = 0; charRow < LINES / 2; ++charRow )
{
uint32_t charBitmap = *charBitmapPtr;
if ( ( scanLine % LINES ) == 0 && charRow == 0 && upperLine )
charBitmap |= 0xFF;
if ( ( scanLine % LINES ) != 0 && charRow == ( ( LINES / 2 ) - 1 ) && underLine )
charBitmap |= 0xFF;
charBitmap ^= *cursorBitmapPtr;
*(destptr + 0) = colors[(bool)(charBitmap & 0x40)];
*(destptr + 1) = colors[(bool)(charBitmap & 0x40)];
*(destptr + 2) = colors[(bool)(charBitmap & 0x80)];
*(destptr + 3) = colors[(bool)(charBitmap & 0x80)];
*(destptr + 4) = colors[(bool)(charBitmap & 0x10)];
*(destptr + 5) = colors[(bool)(charBitmap & 0x10)];
*(destptr + 6) = colors[(bool)(charBitmap & 0x20)];
*(destptr + 7) = colors[(bool)(charBitmap & 0x20)];
*(destptr + 8) = colors[(bool)(charBitmap & 0x04)];
*(destptr + 9) = colors[(bool)(charBitmap & 0x04)];
*(destptr +10) = colors[(bool)(charBitmap & 0x08)];
*(destptr +11) = colors[(bool)(charBitmap & 0x08)];
*(destptr +12) = colors[(bool)(charBitmap & 0x01)];
*(destptr +13) = colors[(bool)(charBitmap & 0x01)];
*(destptr +14) = colors[(bool)(charBitmap & 0x02)];
*(destptr +15) = colors[(bool)(charBitmap & 0x02)];
destptr += SCREENWIDTH;
charBitmapPtr += CHARWIDTHINBYTES;
cursorBitmapPtr += CHARWIDTHINBYTES;
}
}
else
{
for ( int charRow = 0; charRow < LINES / 2; ++charRow )
{
uint32_t charBitmap = *charBitmapPtr;
if ( ( scanLine % LINES ) == 0 && charRow == 0 && upperLine )
charBitmap |= 0xFF;
if ( ( scanLine % LINES ) != 0 && charRow == ( ( LINES / 2 ) - 1 ) && underLine )
charBitmap |= 0xFF;
*(destptr + 0) = colors[(bool)(charBitmap & 0x40)];
*(destptr + 1) = colors[(bool)(charBitmap & 0x40)];
*(destptr + 2) = colors[(bool)(charBitmap & 0x80)];
*(destptr + 3) = colors[(bool)(charBitmap & 0x80)];
*(destptr + 4) = colors[(bool)(charBitmap & 0x10)];
*(destptr + 5) = colors[(bool)(charBitmap & 0x10)];
*(destptr + 6) = colors[(bool)(charBitmap & 0x20)];
*(destptr + 7) = colors[(bool)(charBitmap & 0x20)];
*(destptr + 8) = colors[(bool)(charBitmap & 0x04)];
*(destptr + 9) = colors[(bool)(charBitmap & 0x04)];
*(destptr +10) = colors[(bool)(charBitmap & 0x08)];
*(destptr +11) = colors[(bool)(charBitmap & 0x08)];
*(destptr +12) = colors[(bool)(charBitmap & 0x01)];
*(destptr +13) = colors[(bool)(charBitmap & 0x01)];
*(destptr +14) = colors[(bool)(charBitmap & 0x02)];
*(destptr +15) = colors[(bool)(charBitmap & 0x02)];
destptr += SCREENWIDTH;
charBitmapPtr += CHARWIDTHINBYTES;
}
}
dest += 16;
}
}
void IRAM_ATTR packeduPD3301adpter::drawScanline_PC_Text_80x20_8Colors( void * arg, uint8_t * dest, int scanLine )
{
auto ga = (packeduPD3301adpter *)arg;
constexpr int CHARWIDTH = 8;
constexpr int CHARHEIGHT = 8;
constexpr int CHARWIDTHINBYTES = (CHARWIDTH + 7) / 8;
constexpr int CHARSIZEINBYTES = CHARWIDTHINBYTES * CHARHEIGHT;
constexpr int COLUMNS = 80;
constexpr int SCREENWIDTH = 640;
constexpr int LINES = 4;
if ( scanLine == 0 )
++ga->m_frameCounter;
int charScanline = scanLine % ( CHARHEIGHT + 2 );
int textRow = scanLine / ( CHARHEIGHT + 2 );
if ( charScanline != 0 )
charScanline--;
uint8_t const * fontData = ga->m_font.data + ( charScanline * CHARWIDTHINBYTES );
uint8_t const * fontDataGraph = ga->m_fontGraph.data + ( charScanline * CHARWIDTHINBYTES );
uint8_t const * fontDataPCG = ga->m_fontPCG.data + ( charScanline * CHARWIDTHINBYTES );
uint8_t * rawLUT = ga->m_rawLUT;
uint8_t const * curItem = ga->m_videoBuffer + ( textRow * COLUMNS * 2 );
bool showCursor = ga->m_cursorVisible && ga->m_cursorRow == textRow && ( ( ga->m_frameCounter & 0x1F ) < 0x0F );
int cursorCol = ga->m_cursorCol;
for ( int textCol = 0; textCol < COLUMNS; ++textCol )
{
int charIdx = *curItem++;
int charAttr = *curItem++;
bool upperLine = charAttr & 0x08;
bool graphFont = charAttr & 0x10;
bool reverse = charAttr & 0x20;
bool erase = charAttr & 0x40;
bool underLine = charAttr & 0x80;
uint8_t color = charAttr & 0x07;
uint8_t bg = reverse ? rawLUT[ color ] : rawLUT[0];
uint8_t fg = reverse ? ( erase ? rawLUT[ color ] : rawLUT[0] ) : ( erase ? rawLUT[0] : rawLUT[ color ] );
const uint8_t colors[2] = { bg, fg };
uint8_t const * charBitmapPtr = graphFont
? fontDataGraph + charIdx * CHARSIZEINBYTES
: ( ga->m_enablePCG && charIdx >= 0x80 && charIdx <= 0xFF )
? fontDataPCG + charIdx * CHARSIZEINBYTES
: fontData + charIdx * CHARSIZEINBYTES;
auto destptr = dest;
if ( showCursor && textCol == cursorCol )
{
uint8_t const * cursorBitmapPtr = ga->m_cursorGlyph + ( charScanline * CHARWIDTHINBYTES );
for ( int charRow = 0; charRow < LINES / 2; ++charRow )
{
uint32_t charBitmap = *charBitmapPtr;
uint32_t cusrsorBitmap = *cursorBitmapPtr;
if ( charScanline == 0 && charRow == 0 )
{
cusrsorBitmap = 0x00;
if ( upperLine )
charBitmap = 0xFF;
else
charBitmap = 0x00;
}
if ( charScanline == 7 && charRow == ( LINES / 2 ) - 1 )
{
cusrsorBitmap = 0x00;
if ( underLine )
charBitmap = 0xFF;
else
charBitmap = 0x00;
}
charBitmap ^= cusrsorBitmap;
*(destptr + 0) = colors[(bool)(charBitmap & 0x20)];
*(destptr + 1) = colors[(bool)(charBitmap & 0x10)];
*(destptr + 2) = colors[(bool)(charBitmap & 0x80)];
*(destptr + 3) = colors[(bool)(charBitmap & 0x40)];
*(destptr + 4) = colors[(bool)(charBitmap & 0x02)];
*(destptr + 5) = colors[(bool)(charBitmap & 0x01)];
*(destptr + 6) = colors[(bool)(charBitmap & 0x08)];
*(destptr + 7) = colors[(bool)(charBitmap & 0x04)];
destptr += SCREENWIDTH;
if ( charScanline == 0 && charRow == 0 )
;
else
{
charBitmapPtr += CHARWIDTHINBYTES;
cursorBitmapPtr += CHARWIDTHINBYTES;
}
}
}
else
{
for ( int charRow = 0; charRow < LINES / 2; ++charRow )
{
uint32_t charBitmap = *charBitmapPtr;
if ( charScanline == 0 && charRow == 0 )
{
if ( upperLine )
charBitmap = 0xFF;
else
charBitmap = 0x00;
}
if ( charScanline == 7 && charRow == ( LINES / 2 ) - 1 )
{
if ( underLine )
charBitmap = 0xFF;
else
charBitmap = 0x00;
}
*(destptr + 0) = colors[(bool)(charBitmap & 0x20)];
*(destptr + 1) = colors[(bool)(charBitmap & 0x10)];
*(destptr + 2) = colors[(bool)(charBitmap & 0x80)];
*(destptr + 3) = colors[(bool)(charBitmap & 0x40)];
*(destptr + 4) = colors[(bool)(charBitmap & 0x02)];
*(destptr + 5) = colors[(bool)(charBitmap & 0x01)];
*(destptr + 6) = colors[(bool)(charBitmap & 0x08)];
*(destptr + 7) = colors[(bool)(charBitmap & 0x04)];
destptr += SCREENWIDTH;
if ( charScanline == 0 && charRow == 0 )
;
else
charBitmapPtr += CHARWIDTHINBYTES;
}
}
dest += 8;
}
}
void IRAM_ATTR packeduPD3301adpter::drawScanline_PC_Text_80x25_8Colors( void * arg, uint8_t * dest, int scanLine )
{
auto ga = (packeduPD3301adpter *)arg;
constexpr int CHARWIDTH = 8;
constexpr int CHARHEIGHT = 8;
constexpr int CHARWIDTHINBYTES = (CHARWIDTH + 7) / 8;
constexpr int CHARSIZEINBYTES = CHARWIDTHINBYTES * CHARHEIGHT;
constexpr int COLUMNS = 80;
constexpr int SCREENWIDTH = 640;
constexpr int LINES = 8;
if ( scanLine == 0 )
++ga->m_frameCounter;
int charScanline = scanLine & ( CHARHEIGHT - 1 );
int textRow = scanLine / CHARHEIGHT;
uint8_t const * fontData = ga->m_font.data + ( charScanline * CHARWIDTHINBYTES );
uint8_t const * fontDataGraph = ga->m_fontGraph.data + ( charScanline * CHARWIDTHINBYTES );
uint8_t const * fontDataPCG = ga->m_fontPCG.data + ( charScanline * CHARWIDTHINBYTES );
uint8_t * rawLUT = ga->m_rawLUT;
uint8_t const * curItem = ga->m_videoBuffer + ( textRow * COLUMNS * 2 );
bool showCursor = ga->m_cursorVisible && ga->m_cursorRow == textRow && ( ( ga->m_frameCounter & 0x1F ) < 0x0F );
int cursorCol = ga->m_cursorCol;
for ( int textCol = 0; textCol < COLUMNS; ++textCol )
{
int charIdx = *curItem++;
int charAttr = *curItem++;
bool upperLine = charAttr & 0x08;
bool graphFont = charAttr & 0x10;
bool reverse = charAttr & 0x20;
bool erase = charAttr & 0x40;
bool underLine = charAttr & 0x80;
uint8_t color = charAttr & 0x07;
uint8_t bg = reverse ? rawLUT[ color ] : rawLUT[0];
uint8_t fg = reverse ? ( erase ? rawLUT[ color ] : rawLUT[0] ) : ( erase ? rawLUT[0] : rawLUT[ color ] );
const uint8_t colors[2] = { bg, fg };
uint8_t const * charBitmapPtr = graphFont
? fontDataGraph + charIdx * CHARSIZEINBYTES
: ( ga->m_enablePCG && charIdx >= 0x80 && charIdx <= 0xFF )
? fontDataPCG + charIdx * CHARSIZEINBYTES
: fontData + charIdx * CHARSIZEINBYTES;
auto destptr = dest;
if ( showCursor && textCol == cursorCol )
{
uint8_t const * cursorBitmapPtr = ga->m_cursorGlyph + ( charScanline * CHARWIDTHINBYTES );
for ( int charRow = 0; charRow < LINES / 2; ++charRow )
{
uint32_t charBitmap = *charBitmapPtr;
if ( ( scanLine % LINES ) == 0 && charRow == 0 && upperLine )
charBitmap |= 0xFF;
if ( ( scanLine % LINES ) != 0 && charRow == ( ( LINES / 2 ) - 1 ) && underLine )
charBitmap |= 0xFF;
charBitmap ^= *cursorBitmapPtr;
*(destptr + 0) = colors[(bool)(charBitmap & 0x20)];
*(destptr + 1) = colors[(bool)(charBitmap & 0x10)];
*(destptr + 2) = colors[(bool)(charBitmap & 0x80)];
*(destptr + 3) = colors[(bool)(charBitmap & 0x40)];
*(destptr + 4) = colors[(bool)(charBitmap & 0x02)];
*(destptr + 5) = colors[(bool)(charBitmap & 0x01)];
*(destptr + 6) = colors[(bool)(charBitmap & 0x08)];
*(destptr + 7) = colors[(bool)(charBitmap & 0x04)];
destptr += SCREENWIDTH;
charBitmapPtr += CHARWIDTHINBYTES;
cursorBitmapPtr += CHARWIDTHINBYTES;
}
}
else
{
for ( int charRow = 0; charRow < LINES / 2; ++charRow )
{
uint32_t charBitmap = *charBitmapPtr;
if ( ( scanLine % LINES ) == 0 && charRow == 0 && upperLine )
charBitmap |= 0xFF;
if ( ( scanLine % LINES ) != 0 && charRow == ( ( LINES / 2 ) - 1 ) && underLine )
charBitmap |= 0xFF;
*(destptr + 0) = colors[(bool)(charBitmap & 0x20)];
*(destptr + 1) = colors[(bool)(charBitmap & 0x10)];
*(destptr + 2) = colors[(bool)(charBitmap & 0x80)];
*(destptr + 3) = colors[(bool)(charBitmap & 0x40)];
*(destptr + 4) = colors[(bool)(charBitmap & 0x02)];
*(destptr + 5) = colors[(bool)(charBitmap & 0x01)];
*(destptr + 6) = colors[(bool)(charBitmap & 0x08)];
*(destptr + 7) = colors[(bool)(charBitmap & 0x04)];
destptr += SCREENWIDTH;
charBitmapPtr += CHARWIDTHINBYTES;
}
}
dest += 8;
}
}